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@@ -1,1567 +1,1576 b'' | |||||
1 | """A base class for console-type widgets. |
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1 | """A base class for console-type widgets. | |
2 | """ |
|
2 | """ | |
3 | #----------------------------------------------------------------------------- |
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3 | #----------------------------------------------------------------------------- | |
4 | # Imports |
|
4 | # Imports | |
5 | #----------------------------------------------------------------------------- |
|
5 | #----------------------------------------------------------------------------- | |
6 |
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6 | |||
7 | # Standard library imports |
|
7 | # Standard library imports | |
8 | from os.path import commonprefix |
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8 | from os.path import commonprefix | |
9 | import re |
|
9 | import re | |
10 | import sys |
|
10 | import sys | |
11 | from textwrap import dedent |
|
11 | from textwrap import dedent | |
12 |
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12 | |||
13 | # System library imports |
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13 | # System library imports | |
14 | from PyQt4 import QtCore, QtGui |
|
14 | from PyQt4 import QtCore, QtGui | |
15 |
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15 | |||
16 | # Local imports |
|
16 | # Local imports | |
17 | from IPython.config.configurable import Configurable |
|
17 | from IPython.config.configurable import Configurable | |
18 | from IPython.frontend.qt.util import MetaQObjectHasTraits, get_font |
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18 | from IPython.frontend.qt.util import MetaQObjectHasTraits, get_font | |
19 | from IPython.utils.traitlets import Bool, Enum, Int |
|
19 | from IPython.utils.traitlets import Bool, Enum, Int | |
20 | from ansi_code_processor import QtAnsiCodeProcessor |
|
20 | from ansi_code_processor import QtAnsiCodeProcessor | |
21 | from completion_widget import CompletionWidget |
|
21 | from completion_widget import CompletionWidget | |
22 |
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22 | |||
23 | #----------------------------------------------------------------------------- |
|
23 | #----------------------------------------------------------------------------- | |
24 | # Classes |
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24 | # Classes | |
25 | #----------------------------------------------------------------------------- |
|
25 | #----------------------------------------------------------------------------- | |
26 |
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26 | |||
27 | class ConsoleWidget(Configurable, QtGui.QWidget): |
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27 | class ConsoleWidget(Configurable, QtGui.QWidget): | |
28 | """ An abstract base class for console-type widgets. This class has |
|
28 | """ An abstract base class for console-type widgets. This class has | |
29 | functionality for: |
|
29 | functionality for: | |
30 |
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30 | |||
31 | * Maintaining a prompt and editing region |
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31 | * Maintaining a prompt and editing region | |
32 | * Providing the traditional Unix-style console keyboard shortcuts |
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32 | * Providing the traditional Unix-style console keyboard shortcuts | |
33 | * Performing tab completion |
|
33 | * Performing tab completion | |
34 | * Paging text |
|
34 | * Paging text | |
35 | * Handling ANSI escape codes |
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35 | * Handling ANSI escape codes | |
36 |
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36 | |||
37 | ConsoleWidget also provides a number of utility methods that will be |
|
37 | ConsoleWidget also provides a number of utility methods that will be | |
38 | convenient to implementors of a console-style widget. |
|
38 | convenient to implementors of a console-style widget. | |
39 | """ |
|
39 | """ | |
40 | __metaclass__ = MetaQObjectHasTraits |
|
40 | __metaclass__ = MetaQObjectHasTraits | |
41 |
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41 | |||
42 | # Whether to process ANSI escape codes. |
|
42 | # Whether to process ANSI escape codes. | |
43 | ansi_codes = Bool(True, config=True) |
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43 | ansi_codes = Bool(True, config=True) | |
44 |
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44 | |||
45 | # The maximum number of lines of text before truncation. Specifying a |
|
45 | # The maximum number of lines of text before truncation. Specifying a | |
46 | # non-positive number disables text truncation (not recommended). |
|
46 | # non-positive number disables text truncation (not recommended). | |
47 | buffer_size = Int(500, config=True) |
|
47 | buffer_size = Int(500, config=True) | |
48 |
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48 | |||
49 | # Whether to use a list widget or plain text output for tab completion. |
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49 | # Whether to use a list widget or plain text output for tab completion. | |
50 | gui_completion = Bool(False, config=True) |
|
50 | gui_completion = Bool(False, config=True) | |
51 |
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51 | |||
52 | # The type of underlying text widget to use. Valid values are 'plain', which |
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52 | # The type of underlying text widget to use. Valid values are 'plain', which | |
53 | # specifies a QPlainTextEdit, and 'rich', which specifies a QTextEdit. |
|
53 | # specifies a QPlainTextEdit, and 'rich', which specifies a QTextEdit. | |
54 | # NOTE: this value can only be specified during initialization. |
|
54 | # NOTE: this value can only be specified during initialization. | |
55 | kind = Enum(['plain', 'rich'], default_value='plain', config=True) |
|
55 | kind = Enum(['plain', 'rich'], default_value='plain', config=True) | |
56 |
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56 | |||
57 | # The type of paging to use. Valid values are: |
|
57 | # The type of paging to use. Valid values are: | |
58 | # 'inside' : The widget pages like a traditional terminal pager. |
|
58 | # 'inside' : The widget pages like a traditional terminal pager. | |
59 | # 'hsplit' : When paging is requested, the widget is split |
|
59 | # 'hsplit' : When paging is requested, the widget is split | |
60 | # horizontally. The top pane contains the console, and the |
|
60 | # horizontally. The top pane contains the console, and the | |
61 | # bottom pane contains the paged text. |
|
61 | # bottom pane contains the paged text. | |
62 | # 'vsplit' : Similar to 'hsplit', except that a vertical splitter used. |
|
62 | # 'vsplit' : Similar to 'hsplit', except that a vertical splitter used. | |
63 | # 'custom' : No action is taken by the widget beyond emitting a |
|
63 | # 'custom' : No action is taken by the widget beyond emitting a | |
64 | # 'custom_page_requested(str)' signal. |
|
64 | # 'custom_page_requested(str)' signal. | |
65 | # 'none' : The text is written directly to the console. |
|
65 | # 'none' : The text is written directly to the console. | |
66 | # NOTE: this value can only be specified during initialization. |
|
66 | # NOTE: this value can only be specified during initialization. | |
67 | paging = Enum(['inside', 'hsplit', 'vsplit', 'custom', 'none'], |
|
67 | paging = Enum(['inside', 'hsplit', 'vsplit', 'custom', 'none'], | |
68 | default_value='inside', config=True) |
|
68 | default_value='inside', config=True) | |
69 |
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69 | |||
70 | # Whether to override ShortcutEvents for the keybindings defined by this |
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70 | # Whether to override ShortcutEvents for the keybindings defined by this | |
71 | # widget (Ctrl+n, Ctrl+a, etc). Enable this if you want this widget to take |
|
71 | # widget (Ctrl+n, Ctrl+a, etc). Enable this if you want this widget to take | |
72 | # priority (when it has focus) over, e.g., window-level menu shortcuts. |
|
72 | # priority (when it has focus) over, e.g., window-level menu shortcuts. | |
73 | override_shortcuts = Bool(False) |
|
73 | override_shortcuts = Bool(False) | |
74 |
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74 | |||
75 | # Signals that indicate ConsoleWidget state. |
|
75 | # Signals that indicate ConsoleWidget state. | |
76 | copy_available = QtCore.pyqtSignal(bool) |
|
76 | copy_available = QtCore.pyqtSignal(bool) | |
77 | redo_available = QtCore.pyqtSignal(bool) |
|
77 | redo_available = QtCore.pyqtSignal(bool) | |
78 | undo_available = QtCore.pyqtSignal(bool) |
|
78 | undo_available = QtCore.pyqtSignal(bool) | |
79 |
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79 | |||
80 | # Signal emitted when paging is needed and the paging style has been |
|
80 | # Signal emitted when paging is needed and the paging style has been | |
81 | # specified as 'custom'. |
|
81 | # specified as 'custom'. | |
82 | custom_page_requested = QtCore.pyqtSignal(object) |
|
82 | custom_page_requested = QtCore.pyqtSignal(object) | |
83 |
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83 | |||
84 | # Protected class variables. |
|
84 | # Protected class variables. | |
85 | _ctrl_down_remap = { QtCore.Qt.Key_B : QtCore.Qt.Key_Left, |
|
85 | _ctrl_down_remap = { QtCore.Qt.Key_B : QtCore.Qt.Key_Left, | |
86 | QtCore.Qt.Key_F : QtCore.Qt.Key_Right, |
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86 | QtCore.Qt.Key_F : QtCore.Qt.Key_Right, | |
87 | QtCore.Qt.Key_A : QtCore.Qt.Key_Home, |
|
87 | QtCore.Qt.Key_A : QtCore.Qt.Key_Home, | |
88 | QtCore.Qt.Key_E : QtCore.Qt.Key_End, |
|
88 | QtCore.Qt.Key_E : QtCore.Qt.Key_End, | |
89 | QtCore.Qt.Key_P : QtCore.Qt.Key_Up, |
|
89 | QtCore.Qt.Key_P : QtCore.Qt.Key_Up, | |
90 | QtCore.Qt.Key_N : QtCore.Qt.Key_Down, |
|
90 | QtCore.Qt.Key_N : QtCore.Qt.Key_Down, | |
91 | QtCore.Qt.Key_D : QtCore.Qt.Key_Delete, } |
|
91 | QtCore.Qt.Key_D : QtCore.Qt.Key_Delete, } | |
92 | _shortcuts = set(_ctrl_down_remap.keys() + |
|
92 | _shortcuts = set(_ctrl_down_remap.keys() + | |
93 | [ QtCore.Qt.Key_C, QtCore.Qt.Key_G, QtCore.Qt.Key_O, |
|
93 | [ QtCore.Qt.Key_C, QtCore.Qt.Key_G, QtCore.Qt.Key_O, | |
94 | QtCore.Qt.Key_V ]) |
|
94 | QtCore.Qt.Key_V ]) | |
95 |
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95 | |||
96 | #--------------------------------------------------------------------------- |
|
96 | #--------------------------------------------------------------------------- | |
97 | # 'QObject' interface |
|
97 | # 'QObject' interface | |
98 | #--------------------------------------------------------------------------- |
|
98 | #--------------------------------------------------------------------------- | |
99 |
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99 | |||
100 | def __init__(self, parent=None, **kw): |
|
100 | def __init__(self, parent=None, **kw): | |
101 | """ Create a ConsoleWidget. |
|
101 | """ Create a ConsoleWidget. | |
102 |
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102 | |||
103 | Parameters: |
|
103 | Parameters: | |
104 | ----------- |
|
104 | ----------- | |
105 | parent : QWidget, optional [default None] |
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105 | parent : QWidget, optional [default None] | |
106 | The parent for this widget. |
|
106 | The parent for this widget. | |
107 | """ |
|
107 | """ | |
108 | QtGui.QWidget.__init__(self, parent) |
|
108 | QtGui.QWidget.__init__(self, parent) | |
109 | Configurable.__init__(self, **kw) |
|
109 | Configurable.__init__(self, **kw) | |
110 |
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110 | |||
111 | # Create the layout and underlying text widget. |
|
111 | # Create the layout and underlying text widget. | |
112 | layout = QtGui.QStackedLayout(self) |
|
112 | layout = QtGui.QStackedLayout(self) | |
113 | layout.setContentsMargins(0, 0, 0, 0) |
|
113 | layout.setContentsMargins(0, 0, 0, 0) | |
114 | self._control = self._create_control() |
|
114 | self._control = self._create_control() | |
115 | self._page_control = None |
|
115 | self._page_control = None | |
116 | self._splitter = None |
|
116 | self._splitter = None | |
117 | if self.paging in ('hsplit', 'vsplit'): |
|
117 | if self.paging in ('hsplit', 'vsplit'): | |
118 | self._splitter = QtGui.QSplitter() |
|
118 | self._splitter = QtGui.QSplitter() | |
119 | if self.paging == 'hsplit': |
|
119 | if self.paging == 'hsplit': | |
120 | self._splitter.setOrientation(QtCore.Qt.Horizontal) |
|
120 | self._splitter.setOrientation(QtCore.Qt.Horizontal) | |
121 | else: |
|
121 | else: | |
122 | self._splitter.setOrientation(QtCore.Qt.Vertical) |
|
122 | self._splitter.setOrientation(QtCore.Qt.Vertical) | |
123 | self._splitter.addWidget(self._control) |
|
123 | self._splitter.addWidget(self._control) | |
124 | layout.addWidget(self._splitter) |
|
124 | layout.addWidget(self._splitter) | |
125 | else: |
|
125 | else: | |
126 | layout.addWidget(self._control) |
|
126 | layout.addWidget(self._control) | |
127 |
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127 | |||
128 | # Create the paging widget, if necessary. |
|
128 | # Create the paging widget, if necessary. | |
129 | if self.paging in ('inside', 'hsplit', 'vsplit'): |
|
129 | if self.paging in ('inside', 'hsplit', 'vsplit'): | |
130 | self._page_control = self._create_page_control() |
|
130 | self._page_control = self._create_page_control() | |
131 | if self._splitter: |
|
131 | if self._splitter: | |
132 | self._page_control.hide() |
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132 | self._page_control.hide() | |
133 | self._splitter.addWidget(self._page_control) |
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133 | self._splitter.addWidget(self._page_control) | |
134 | else: |
|
134 | else: | |
135 | layout.addWidget(self._page_control) |
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135 | layout.addWidget(self._page_control) | |
136 |
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136 | |||
137 | # Initialize protected variables. Some variables contain useful state |
|
137 | # Initialize protected variables. Some variables contain useful state | |
138 | # information for subclasses; they should be considered read-only. |
|
138 | # information for subclasses; they should be considered read-only. | |
139 | self._ansi_processor = QtAnsiCodeProcessor() |
|
139 | self._ansi_processor = QtAnsiCodeProcessor() | |
140 | self._completion_widget = CompletionWidget(self._control) |
|
140 | self._completion_widget = CompletionWidget(self._control) | |
141 | self._continuation_prompt = '> ' |
|
141 | self._continuation_prompt = '> ' | |
142 | self._continuation_prompt_html = None |
|
142 | self._continuation_prompt_html = None | |
143 | self._executing = False |
|
143 | self._executing = False | |
144 | self._prompt = '' |
|
144 | self._prompt = '' | |
145 | self._prompt_html = None |
|
145 | self._prompt_html = None | |
146 | self._prompt_pos = 0 |
|
146 | self._prompt_pos = 0 | |
147 | self._prompt_sep = '' |
|
147 | self._prompt_sep = '' | |
148 | self._reading = False |
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148 | self._reading = False | |
149 | self._reading_callback = None |
|
149 | self._reading_callback = None | |
150 | self._tab_width = 8 |
|
150 | self._tab_width = 8 | |
151 | self._text_completing_pos = 0 |
|
151 | self._text_completing_pos = 0 | |
152 |
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152 | |||
153 | # Set a monospaced font. |
|
153 | # Set a monospaced font. | |
154 | self.reset_font() |
|
154 | self.reset_font() | |
155 |
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155 | |||
156 | def eventFilter(self, obj, event): |
|
156 | def eventFilter(self, obj, event): | |
157 | """ Reimplemented to ensure a console-like behavior in the underlying |
|
157 | """ Reimplemented to ensure a console-like behavior in the underlying | |
158 | text widgets. |
|
158 | text widgets. | |
159 | """ |
|
159 | """ | |
160 | etype = event.type() |
|
160 | etype = event.type() | |
161 | if etype == QtCore.QEvent.KeyPress: |
|
161 | if etype == QtCore.QEvent.KeyPress: | |
162 |
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162 | |||
163 | # Re-map keys for all filtered widgets. |
|
163 | # Re-map keys for all filtered widgets. | |
164 | key = event.key() |
|
164 | key = event.key() | |
165 | if self._control_key_down(event.modifiers()) and \ |
|
165 | if self._control_key_down(event.modifiers()) and \ | |
166 | key in self._ctrl_down_remap: |
|
166 | key in self._ctrl_down_remap: | |
167 | new_event = QtGui.QKeyEvent(QtCore.QEvent.KeyPress, |
|
167 | new_event = QtGui.QKeyEvent(QtCore.QEvent.KeyPress, | |
168 | self._ctrl_down_remap[key], |
|
168 | self._ctrl_down_remap[key], | |
169 | QtCore.Qt.NoModifier) |
|
169 | QtCore.Qt.NoModifier) | |
170 | QtGui.qApp.sendEvent(obj, new_event) |
|
170 | QtGui.qApp.sendEvent(obj, new_event) | |
171 | return True |
|
171 | return True | |
172 |
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172 | |||
173 | elif obj == self._control: |
|
173 | elif obj == self._control: | |
174 | return self._event_filter_console_keypress(event) |
|
174 | return self._event_filter_console_keypress(event) | |
175 |
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175 | |||
176 | elif obj == self._page_control: |
|
176 | elif obj == self._page_control: | |
177 | return self._event_filter_page_keypress(event) |
|
177 | return self._event_filter_page_keypress(event) | |
178 |
|
178 | |||
179 | # Make middle-click paste safe. |
|
179 | # Make middle-click paste safe. | |
180 | elif etype == QtCore.QEvent.MouseButtonRelease and \ |
|
180 | elif etype == QtCore.QEvent.MouseButtonRelease and \ | |
181 | event.button() == QtCore.Qt.MidButton and \ |
|
181 | event.button() == QtCore.Qt.MidButton and \ | |
182 | obj == self._control.viewport(): |
|
182 | obj == self._control.viewport(): | |
183 | cursor = self._control.cursorForPosition(event.pos()) |
|
183 | cursor = self._control.cursorForPosition(event.pos()) | |
184 | self._control.setTextCursor(cursor) |
|
184 | self._control.setTextCursor(cursor) | |
185 | self.paste(QtGui.QClipboard.Selection) |
|
185 | self.paste(QtGui.QClipboard.Selection) | |
186 | return True |
|
186 | return True | |
187 |
|
187 | |||
188 | # Manually adjust the scrollbars *after* a resize event is dispatched. |
|
188 | # Manually adjust the scrollbars *after* a resize event is dispatched. | |
189 | elif etype == QtCore.QEvent.Resize: |
|
189 | elif etype == QtCore.QEvent.Resize: | |
190 | QtCore.QTimer.singleShot(0, self._adjust_scrollbars) |
|
190 | QtCore.QTimer.singleShot(0, self._adjust_scrollbars) | |
191 |
|
191 | |||
192 | # Override shortcuts for all filtered widgets. |
|
192 | # Override shortcuts for all filtered widgets. | |
193 | elif etype == QtCore.QEvent.ShortcutOverride and \ |
|
193 | elif etype == QtCore.QEvent.ShortcutOverride and \ | |
194 | self.override_shortcuts and \ |
|
194 | self.override_shortcuts and \ | |
195 | self._control_key_down(event.modifiers()) and \ |
|
195 | self._control_key_down(event.modifiers()) and \ | |
196 | event.key() in self._shortcuts: |
|
196 | event.key() in self._shortcuts: | |
197 | event.accept() |
|
197 | event.accept() | |
198 | return False |
|
198 | return False | |
199 |
|
199 | |||
200 | # Prevent text from being moved by drag and drop. |
|
200 | # Prevent text from being moved by drag and drop. | |
201 | elif etype in (QtCore.QEvent.DragEnter, QtCore.QEvent.DragLeave, |
|
201 | elif etype in (QtCore.QEvent.DragEnter, QtCore.QEvent.DragLeave, | |
202 | QtCore.QEvent.DragMove, QtCore.QEvent.Drop): |
|
202 | QtCore.QEvent.DragMove, QtCore.QEvent.Drop): | |
203 | return True |
|
203 | return True | |
204 |
|
204 | |||
205 | return super(ConsoleWidget, self).eventFilter(obj, event) |
|
205 | return super(ConsoleWidget, self).eventFilter(obj, event) | |
206 |
|
206 | |||
207 | #--------------------------------------------------------------------------- |
|
207 | #--------------------------------------------------------------------------- | |
208 | # 'QWidget' interface |
|
208 | # 'QWidget' interface | |
209 | #--------------------------------------------------------------------------- |
|
209 | #--------------------------------------------------------------------------- | |
210 |
|
210 | |||
211 | def sizeHint(self): |
|
211 | def sizeHint(self): | |
212 | """ Reimplemented to suggest a size that is 80 characters wide and |
|
212 | """ Reimplemented to suggest a size that is 80 characters wide and | |
213 | 25 lines high. |
|
213 | 25 lines high. | |
214 | """ |
|
214 | """ | |
215 | font_metrics = QtGui.QFontMetrics(self.font) |
|
215 | font_metrics = QtGui.QFontMetrics(self.font) | |
216 | margin = (self._control.frameWidth() + |
|
216 | margin = (self._control.frameWidth() + | |
217 | self._control.document().documentMargin()) * 2 |
|
217 | self._control.document().documentMargin()) * 2 | |
218 | style = self.style() |
|
218 | style = self.style() | |
219 | splitwidth = style.pixelMetric(QtGui.QStyle.PM_SplitterWidth) |
|
219 | splitwidth = style.pixelMetric(QtGui.QStyle.PM_SplitterWidth) | |
220 |
|
220 | |||
221 | # Note 1: Despite my best efforts to take the various margins into |
|
221 | # Note 1: Despite my best efforts to take the various margins into | |
222 | # account, the width is still coming out a bit too small, so we include |
|
222 | # account, the width is still coming out a bit too small, so we include | |
223 | # a fudge factor of one character here. |
|
223 | # a fudge factor of one character here. | |
224 | # Note 2: QFontMetrics.maxWidth is not used here or anywhere else due |
|
224 | # Note 2: QFontMetrics.maxWidth is not used here or anywhere else due | |
225 | # to a Qt bug on certain Mac OS systems where it returns 0. |
|
225 | # to a Qt bug on certain Mac OS systems where it returns 0. | |
226 | width = font_metrics.width(' ') * 81 + margin |
|
226 | width = font_metrics.width(' ') * 81 + margin | |
227 | width += style.pixelMetric(QtGui.QStyle.PM_ScrollBarExtent) |
|
227 | width += style.pixelMetric(QtGui.QStyle.PM_ScrollBarExtent) | |
228 | if self.paging == 'hsplit': |
|
228 | if self.paging == 'hsplit': | |
229 | width = width * 2 + splitwidth |
|
229 | width = width * 2 + splitwidth | |
230 |
|
230 | |||
231 | height = font_metrics.height() * 25 + margin |
|
231 | height = font_metrics.height() * 25 + margin | |
232 | if self.paging == 'vsplit': |
|
232 | if self.paging == 'vsplit': | |
233 | height = height * 2 + splitwidth |
|
233 | height = height * 2 + splitwidth | |
234 |
|
234 | |||
235 | return QtCore.QSize(width, height) |
|
235 | return QtCore.QSize(width, height) | |
236 |
|
236 | |||
237 | #--------------------------------------------------------------------------- |
|
237 | #--------------------------------------------------------------------------- | |
238 | # 'ConsoleWidget' public interface |
|
238 | # 'ConsoleWidget' public interface | |
239 | #--------------------------------------------------------------------------- |
|
239 | #--------------------------------------------------------------------------- | |
240 |
|
240 | |||
241 | def can_copy(self): |
|
241 | def can_copy(self): | |
242 | """ Returns whether text can be copied to the clipboard. |
|
242 | """ Returns whether text can be copied to the clipboard. | |
243 | """ |
|
243 | """ | |
244 | return self._control.textCursor().hasSelection() |
|
244 | return self._control.textCursor().hasSelection() | |
245 |
|
245 | |||
246 | def can_cut(self): |
|
246 | def can_cut(self): | |
247 | """ Returns whether text can be cut to the clipboard. |
|
247 | """ Returns whether text can be cut to the clipboard. | |
248 | """ |
|
248 | """ | |
249 | cursor = self._control.textCursor() |
|
249 | cursor = self._control.textCursor() | |
250 | return (cursor.hasSelection() and |
|
250 | return (cursor.hasSelection() and | |
251 | self._in_buffer(cursor.anchor()) and |
|
251 | self._in_buffer(cursor.anchor()) and | |
252 | self._in_buffer(cursor.position())) |
|
252 | self._in_buffer(cursor.position())) | |
253 |
|
253 | |||
254 | def can_paste(self): |
|
254 | def can_paste(self): | |
255 | """ Returns whether text can be pasted from the clipboard. |
|
255 | """ Returns whether text can be pasted from the clipboard. | |
256 | """ |
|
256 | """ | |
257 | # Only accept text that can be ASCII encoded. |
|
257 | # Only accept text that can be ASCII encoded. | |
258 | if self._control.textInteractionFlags() & QtCore.Qt.TextEditable: |
|
258 | if self._control.textInteractionFlags() & QtCore.Qt.TextEditable: | |
259 | text = QtGui.QApplication.clipboard().text() |
|
259 | text = QtGui.QApplication.clipboard().text() | |
260 | if not text.isEmpty(): |
|
260 | if not text.isEmpty(): | |
261 | try: |
|
261 | try: | |
262 | str(text) |
|
262 | str(text) | |
263 | return True |
|
263 | return True | |
264 | except UnicodeEncodeError: |
|
264 | except UnicodeEncodeError: | |
265 | pass |
|
265 | pass | |
266 | return False |
|
266 | return False | |
267 |
|
267 | |||
268 | def clear(self, keep_input=True): |
|
268 | def clear(self, keep_input=True): | |
269 | """ Clear the console, then write a new prompt. If 'keep_input' is set, |
|
269 | """ Clear the console, then write a new prompt. If 'keep_input' is set, | |
270 | restores the old input buffer when the new prompt is written. |
|
270 | restores the old input buffer when the new prompt is written. | |
271 | """ |
|
271 | """ | |
272 | if keep_input: |
|
272 | if keep_input: | |
273 | input_buffer = self.input_buffer |
|
273 | input_buffer = self.input_buffer | |
274 | self._control.clear() |
|
274 | self._control.clear() | |
275 | self._show_prompt() |
|
275 | self._show_prompt() | |
276 | if keep_input: |
|
276 | if keep_input: | |
277 | self.input_buffer = input_buffer |
|
277 | self.input_buffer = input_buffer | |
278 |
|
278 | |||
279 | def copy(self): |
|
279 | def copy(self): | |
280 | """ Copy the currently selected text to the clipboard. |
|
280 | """ Copy the currently selected text to the clipboard. | |
281 | """ |
|
281 | """ | |
282 | self._control.copy() |
|
282 | self._control.copy() | |
283 |
|
283 | |||
284 | def cut(self): |
|
284 | def cut(self): | |
285 | """ Copy the currently selected text to the clipboard and delete it |
|
285 | """ Copy the currently selected text to the clipboard and delete it | |
286 | if it's inside the input buffer. |
|
286 | if it's inside the input buffer. | |
287 | """ |
|
287 | """ | |
288 | self.copy() |
|
288 | self.copy() | |
289 | if self.can_cut(): |
|
289 | if self.can_cut(): | |
290 | self._control.textCursor().removeSelectedText() |
|
290 | self._control.textCursor().removeSelectedText() | |
291 |
|
291 | |||
292 | def execute(self, source=None, hidden=False, interactive=False): |
|
292 | def execute(self, source=None, hidden=False, interactive=False): | |
293 | """ Executes source or the input buffer, possibly prompting for more |
|
293 | """ Executes source or the input buffer, possibly prompting for more | |
294 | input. |
|
294 | input. | |
295 |
|
295 | |||
296 | Parameters: |
|
296 | Parameters: | |
297 | ----------- |
|
297 | ----------- | |
298 | source : str, optional |
|
298 | source : str, optional | |
299 |
|
299 | |||
300 | The source to execute. If not specified, the input buffer will be |
|
300 | The source to execute. If not specified, the input buffer will be | |
301 | used. If specified and 'hidden' is False, the input buffer will be |
|
301 | used. If specified and 'hidden' is False, the input buffer will be | |
302 | replaced with the source before execution. |
|
302 | replaced with the source before execution. | |
303 |
|
303 | |||
304 | hidden : bool, optional (default False) |
|
304 | hidden : bool, optional (default False) | |
305 |
|
305 | |||
306 | If set, no output will be shown and the prompt will not be modified. |
|
306 | If set, no output will be shown and the prompt will not be modified. | |
307 | In other words, it will be completely invisible to the user that |
|
307 | In other words, it will be completely invisible to the user that | |
308 | an execution has occurred. |
|
308 | an execution has occurred. | |
309 |
|
309 | |||
310 | interactive : bool, optional (default False) |
|
310 | interactive : bool, optional (default False) | |
311 |
|
311 | |||
312 | Whether the console is to treat the source as having been manually |
|
312 | Whether the console is to treat the source as having been manually | |
313 | entered by the user. The effect of this parameter depends on the |
|
313 | entered by the user. The effect of this parameter depends on the | |
314 | subclass implementation. |
|
314 | subclass implementation. | |
315 |
|
315 | |||
316 | Raises: |
|
316 | Raises: | |
317 | ------- |
|
317 | ------- | |
318 | RuntimeError |
|
318 | RuntimeError | |
319 | If incomplete input is given and 'hidden' is True. In this case, |
|
319 | If incomplete input is given and 'hidden' is True. In this case, | |
320 | it is not possible to prompt for more input. |
|
320 | it is not possible to prompt for more input. | |
321 |
|
321 | |||
322 | Returns: |
|
322 | Returns: | |
323 | -------- |
|
323 | -------- | |
324 | A boolean indicating whether the source was executed. |
|
324 | A boolean indicating whether the source was executed. | |
325 | """ |
|
325 | """ | |
326 | # WARNING: The order in which things happen here is very particular, in |
|
326 | # WARNING: The order in which things happen here is very particular, in | |
327 | # large part because our syntax highlighting is fragile. If you change |
|
327 | # large part because our syntax highlighting is fragile. If you change | |
328 | # something, test carefully! |
|
328 | # something, test carefully! | |
329 |
|
329 | |||
330 | # Decide what to execute. |
|
330 | # Decide what to execute. | |
331 | if source is None: |
|
331 | if source is None: | |
332 | source = self.input_buffer |
|
332 | source = self.input_buffer | |
333 | if not hidden: |
|
333 | if not hidden: | |
334 | # A newline is appended later, but it should be considered part |
|
334 | # A newline is appended later, but it should be considered part | |
335 | # of the input buffer. |
|
335 | # of the input buffer. | |
336 | source += '\n' |
|
336 | source += '\n' | |
337 | elif not hidden: |
|
337 | elif not hidden: | |
338 | self.input_buffer = source |
|
338 | self.input_buffer = source | |
339 |
|
339 | |||
340 | # Execute the source or show a continuation prompt if it is incomplete. |
|
340 | # Execute the source or show a continuation prompt if it is incomplete. | |
341 | complete = self._is_complete(source, interactive) |
|
341 | complete = self._is_complete(source, interactive) | |
342 | if hidden: |
|
342 | if hidden: | |
343 | if complete: |
|
343 | if complete: | |
344 | self._execute(source, hidden) |
|
344 | self._execute(source, hidden) | |
345 | else: |
|
345 | else: | |
346 | error = 'Incomplete noninteractive input: "%s"' |
|
346 | error = 'Incomplete noninteractive input: "%s"' | |
347 | raise RuntimeError(error % source) |
|
347 | raise RuntimeError(error % source) | |
348 | else: |
|
348 | else: | |
349 | if complete: |
|
349 | if complete: | |
350 | self._append_plain_text('\n') |
|
350 | self._append_plain_text('\n') | |
351 | self._executing_input_buffer = self.input_buffer |
|
351 | self._executing_input_buffer = self.input_buffer | |
352 | self._executing = True |
|
352 | self._executing = True | |
353 | self._prompt_finished() |
|
353 | self._prompt_finished() | |
354 |
|
354 | |||
355 | # The maximum block count is only in effect during execution. |
|
355 | # The maximum block count is only in effect during execution. | |
356 | # This ensures that _prompt_pos does not become invalid due to |
|
356 | # This ensures that _prompt_pos does not become invalid due to | |
357 | # text truncation. |
|
357 | # text truncation. | |
358 | self._control.document().setMaximumBlockCount(self.buffer_size) |
|
358 | self._control.document().setMaximumBlockCount(self.buffer_size) | |
359 |
|
359 | |||
360 | # Setting a positive maximum block count will automatically |
|
360 | # Setting a positive maximum block count will automatically | |
361 | # disable the undo/redo history, but just to be safe: |
|
361 | # disable the undo/redo history, but just to be safe: | |
362 | self._control.setUndoRedoEnabled(False) |
|
362 | self._control.setUndoRedoEnabled(False) | |
363 |
|
363 | |||
364 | # Perform actual execution. |
|
364 | # Perform actual execution. | |
365 | self._execute(source, hidden) |
|
365 | self._execute(source, hidden) | |
366 |
|
366 | |||
367 | else: |
|
367 | else: | |
368 | # Do this inside an edit block so continuation prompts are |
|
368 | # Do this inside an edit block so continuation prompts are | |
369 | # removed seamlessly via undo/redo. |
|
369 | # removed seamlessly via undo/redo. | |
370 | cursor = self._get_end_cursor() |
|
370 | cursor = self._get_end_cursor() | |
371 | cursor.beginEditBlock() |
|
371 | cursor.beginEditBlock() | |
372 | cursor.insertText('\n') |
|
372 | cursor.insertText('\n') | |
373 | self._insert_continuation_prompt(cursor) |
|
373 | self._insert_continuation_prompt(cursor) | |
374 | cursor.endEditBlock() |
|
374 | cursor.endEditBlock() | |
375 |
|
375 | |||
376 | # Do not do this inside the edit block. It works as expected |
|
376 | # Do not do this inside the edit block. It works as expected | |
377 | # when using a QPlainTextEdit control, but does not have an |
|
377 | # when using a QPlainTextEdit control, but does not have an | |
378 | # effect when using a QTextEdit. I believe this is a Qt bug. |
|
378 | # effect when using a QTextEdit. I believe this is a Qt bug. | |
379 | self._control.moveCursor(QtGui.QTextCursor.End) |
|
379 | self._control.moveCursor(QtGui.QTextCursor.End) | |
380 |
|
380 | |||
381 | return complete |
|
381 | return complete | |
382 |
|
382 | |||
383 | def _get_input_buffer(self): |
|
383 | def _get_input_buffer(self): | |
384 | """ The text that the user has entered entered at the current prompt. |
|
384 | """ The text that the user has entered entered at the current prompt. | |
385 | """ |
|
385 | """ | |
386 | # If we're executing, the input buffer may not even exist anymore due to |
|
386 | # If we're executing, the input buffer may not even exist anymore due to | |
387 | # the limit imposed by 'buffer_size'. Therefore, we store it. |
|
387 | # the limit imposed by 'buffer_size'. Therefore, we store it. | |
388 | if self._executing: |
|
388 | if self._executing: | |
389 | return self._executing_input_buffer |
|
389 | return self._executing_input_buffer | |
390 |
|
390 | |||
391 | cursor = self._get_end_cursor() |
|
391 | cursor = self._get_end_cursor() | |
392 | cursor.setPosition(self._prompt_pos, QtGui.QTextCursor.KeepAnchor) |
|
392 | cursor.setPosition(self._prompt_pos, QtGui.QTextCursor.KeepAnchor) | |
393 | input_buffer = str(cursor.selection().toPlainText()) |
|
393 | input_buffer = str(cursor.selection().toPlainText()) | |
394 |
|
394 | |||
395 | # Strip out continuation prompts. |
|
395 | # Strip out continuation prompts. | |
396 | return input_buffer.replace('\n' + self._continuation_prompt, '\n') |
|
396 | return input_buffer.replace('\n' + self._continuation_prompt, '\n') | |
397 |
|
397 | |||
398 | def _set_input_buffer(self, string): |
|
398 | def _set_input_buffer(self, string): | |
399 | """ Replaces the text in the input buffer with 'string'. |
|
399 | """ Replaces the text in the input buffer with 'string'. | |
400 | """ |
|
400 | """ | |
401 | # For now, it is an error to modify the input buffer during execution. |
|
401 | # For now, it is an error to modify the input buffer during execution. | |
402 | if self._executing: |
|
402 | if self._executing: | |
403 | raise RuntimeError("Cannot change input buffer during execution.") |
|
403 | raise RuntimeError("Cannot change input buffer during execution.") | |
404 |
|
404 | |||
405 | # Remove old text. |
|
405 | # Remove old text. | |
406 | cursor = self._get_end_cursor() |
|
406 | cursor = self._get_end_cursor() | |
407 | cursor.beginEditBlock() |
|
407 | cursor.beginEditBlock() | |
408 | cursor.setPosition(self._prompt_pos, QtGui.QTextCursor.KeepAnchor) |
|
408 | cursor.setPosition(self._prompt_pos, QtGui.QTextCursor.KeepAnchor) | |
409 | cursor.removeSelectedText() |
|
409 | cursor.removeSelectedText() | |
410 |
|
410 | |||
411 | # Insert new text with continuation prompts. |
|
411 | # Insert new text with continuation prompts. | |
412 | lines = string.splitlines(True) |
|
412 | lines = string.splitlines(True) | |
413 | if lines: |
|
413 | if lines: | |
414 | self._append_plain_text(lines[0]) |
|
414 | self._append_plain_text(lines[0]) | |
415 | for i in xrange(1, len(lines)): |
|
415 | for i in xrange(1, len(lines)): | |
416 | if self._continuation_prompt_html is None: |
|
416 | if self._continuation_prompt_html is None: | |
417 | self._append_plain_text(self._continuation_prompt) |
|
417 | self._append_plain_text(self._continuation_prompt) | |
418 | else: |
|
418 | else: | |
419 | self._append_html(self._continuation_prompt_html) |
|
419 | self._append_html(self._continuation_prompt_html) | |
420 | self._append_plain_text(lines[i]) |
|
420 | self._append_plain_text(lines[i]) | |
421 | cursor.endEditBlock() |
|
421 | cursor.endEditBlock() | |
422 | self._control.moveCursor(QtGui.QTextCursor.End) |
|
422 | self._control.moveCursor(QtGui.QTextCursor.End) | |
423 |
|
423 | |||
424 | input_buffer = property(_get_input_buffer, _set_input_buffer) |
|
424 | input_buffer = property(_get_input_buffer, _set_input_buffer) | |
425 |
|
425 | |||
426 | def _get_font(self): |
|
426 | def _get_font(self): | |
427 | """ The base font being used by the ConsoleWidget. |
|
427 | """ The base font being used by the ConsoleWidget. | |
428 | """ |
|
428 | """ | |
429 | return self._control.document().defaultFont() |
|
429 | return self._control.document().defaultFont() | |
430 |
|
430 | |||
431 | def _set_font(self, font): |
|
431 | def _set_font(self, font): | |
432 | """ Sets the base font for the ConsoleWidget to the specified QFont. |
|
432 | """ Sets the base font for the ConsoleWidget to the specified QFont. | |
433 | """ |
|
433 | """ | |
434 | font_metrics = QtGui.QFontMetrics(font) |
|
434 | font_metrics = QtGui.QFontMetrics(font) | |
435 | self._control.setTabStopWidth(self.tab_width * font_metrics.width(' ')) |
|
435 | self._control.setTabStopWidth(self.tab_width * font_metrics.width(' ')) | |
436 |
|
436 | |||
437 | self._completion_widget.setFont(font) |
|
437 | self._completion_widget.setFont(font) | |
438 | self._control.document().setDefaultFont(font) |
|
438 | self._control.document().setDefaultFont(font) | |
439 | if self._page_control: |
|
439 | if self._page_control: | |
440 | self._page_control.document().setDefaultFont(font) |
|
440 | self._page_control.document().setDefaultFont(font) | |
441 |
|
441 | |||
442 | font = property(_get_font, _set_font) |
|
442 | font = property(_get_font, _set_font) | |
443 |
|
443 | |||
444 | def paste(self, mode=QtGui.QClipboard.Clipboard): |
|
444 | def paste(self, mode=QtGui.QClipboard.Clipboard): | |
445 | """ Paste the contents of the clipboard into the input region. |
|
445 | """ Paste the contents of the clipboard into the input region. | |
446 |
|
446 | |||
447 | Parameters: |
|
447 | Parameters: | |
448 | ----------- |
|
448 | ----------- | |
449 | mode : QClipboard::Mode, optional [default QClipboard::Clipboard] |
|
449 | mode : QClipboard::Mode, optional [default QClipboard::Clipboard] | |
450 |
|
450 | |||
451 | Controls which part of the system clipboard is used. This can be |
|
451 | Controls which part of the system clipboard is used. This can be | |
452 | used to access the selection clipboard in X11 and the Find buffer |
|
452 | used to access the selection clipboard in X11 and the Find buffer | |
453 | in Mac OS. By default, the regular clipboard is used. |
|
453 | in Mac OS. By default, the regular clipboard is used. | |
454 | """ |
|
454 | """ | |
455 | if self._control.textInteractionFlags() & QtCore.Qt.TextEditable: |
|
455 | if self._control.textInteractionFlags() & QtCore.Qt.TextEditable: | |
456 | try: |
|
456 | try: | |
457 | # Remove any trailing newline, which confuses the GUI and |
|
457 | # Remove any trailing newline, which confuses the GUI and | |
458 | # forces the user to backspace. |
|
458 | # forces the user to backspace. | |
459 | text = str(QtGui.QApplication.clipboard().text(mode)).rstrip() |
|
459 | text = str(QtGui.QApplication.clipboard().text(mode)).rstrip() | |
460 | except UnicodeEncodeError: |
|
460 | except UnicodeEncodeError: | |
461 | pass |
|
461 | pass | |
462 | else: |
|
462 | else: | |
463 | self._insert_plain_text_into_buffer(dedent(text)) |
|
463 | self._insert_plain_text_into_buffer(dedent(text)) | |
464 |
|
464 | |||
465 | def print_(self, printer): |
|
465 | def print_(self, printer): | |
466 | """ Print the contents of the ConsoleWidget to the specified QPrinter. |
|
466 | """ Print the contents of the ConsoleWidget to the specified QPrinter. | |
467 | """ |
|
467 | """ | |
468 | self._control.print_(printer) |
|
468 | self._control.print_(printer) | |
469 |
|
469 | |||
470 | def prompt_to_top(self): |
|
470 | def prompt_to_top(self): | |
471 | """ Moves the prompt to the top of the viewport. |
|
471 | """ Moves the prompt to the top of the viewport. | |
472 | """ |
|
472 | """ | |
473 | if not self._executing: |
|
473 | if not self._executing: | |
474 | self._set_top_cursor(self._get_prompt_cursor()) |
|
474 | self._set_top_cursor(self._get_prompt_cursor()) | |
475 |
|
475 | |||
476 | def redo(self): |
|
476 | def redo(self): | |
477 | """ Redo the last operation. If there is no operation to redo, nothing |
|
477 | """ Redo the last operation. If there is no operation to redo, nothing | |
478 | happens. |
|
478 | happens. | |
479 | """ |
|
479 | """ | |
480 | self._control.redo() |
|
480 | self._control.redo() | |
481 |
|
481 | |||
482 | def reset_font(self): |
|
482 | def reset_font(self): | |
483 | """ Sets the font to the default fixed-width font for this platform. |
|
483 | """ Sets the font to the default fixed-width font for this platform. | |
484 | """ |
|
484 | """ | |
485 | if sys.platform == 'win32': |
|
485 | if sys.platform == 'win32': | |
486 | # Consolas ships with Vista/Win7, fallback to Courier if needed |
|
486 | # Consolas ships with Vista/Win7, fallback to Courier if needed | |
487 | family, fallback = 'Consolas', 'Courier' |
|
487 | family, fallback = 'Consolas', 'Courier' | |
488 | elif sys.platform == 'darwin': |
|
488 | elif sys.platform == 'darwin': | |
489 | # OSX always has Monaco, no need for a fallback |
|
489 | # OSX always has Monaco, no need for a fallback | |
490 | family, fallback = 'Monaco', None |
|
490 | family, fallback = 'Monaco', None | |
491 | else: |
|
491 | else: | |
492 | # FIXME: remove Consolas as a default on Linux once our font |
|
492 | # FIXME: remove Consolas as a default on Linux once our font | |
493 | # selections are configurable by the user. |
|
493 | # selections are configurable by the user. | |
494 | family, fallback = 'Consolas', 'Monospace' |
|
494 | family, fallback = 'Consolas', 'Monospace' | |
495 | font = get_font(family, fallback) |
|
495 | font = get_font(family, fallback) | |
496 | font.setPointSize(QtGui.qApp.font().pointSize()) |
|
496 | font.setPointSize(QtGui.qApp.font().pointSize()) | |
497 | font.setStyleHint(QtGui.QFont.TypeWriter) |
|
497 | font.setStyleHint(QtGui.QFont.TypeWriter) | |
498 | self._set_font(font) |
|
498 | self._set_font(font) | |
499 |
|
499 | |||
500 | def select_all(self): |
|
500 | def select_all(self): | |
501 | """ Selects all the text in the buffer. |
|
501 | """ Selects all the text in the buffer. | |
502 | """ |
|
502 | """ | |
503 | self._control.selectAll() |
|
503 | self._control.selectAll() | |
504 |
|
504 | |||
505 | def _get_tab_width(self): |
|
505 | def _get_tab_width(self): | |
506 | """ The width (in terms of space characters) for tab characters. |
|
506 | """ The width (in terms of space characters) for tab characters. | |
507 | """ |
|
507 | """ | |
508 | return self._tab_width |
|
508 | return self._tab_width | |
509 |
|
509 | |||
510 | def _set_tab_width(self, tab_width): |
|
510 | def _set_tab_width(self, tab_width): | |
511 | """ Sets the width (in terms of space characters) for tab characters. |
|
511 | """ Sets the width (in terms of space characters) for tab characters. | |
512 | """ |
|
512 | """ | |
513 | font_metrics = QtGui.QFontMetrics(self.font) |
|
513 | font_metrics = QtGui.QFontMetrics(self.font) | |
514 | self._control.setTabStopWidth(tab_width * font_metrics.width(' ')) |
|
514 | self._control.setTabStopWidth(tab_width * font_metrics.width(' ')) | |
515 |
|
515 | |||
516 | self._tab_width = tab_width |
|
516 | self._tab_width = tab_width | |
517 |
|
517 | |||
518 | tab_width = property(_get_tab_width, _set_tab_width) |
|
518 | tab_width = property(_get_tab_width, _set_tab_width) | |
519 |
|
519 | |||
520 | def undo(self): |
|
520 | def undo(self): | |
521 | """ Undo the last operation. If there is no operation to undo, nothing |
|
521 | """ Undo the last operation. If there is no operation to undo, nothing | |
522 | happens. |
|
522 | happens. | |
523 | """ |
|
523 | """ | |
524 | self._control.undo() |
|
524 | self._control.undo() | |
525 |
|
525 | |||
526 | #--------------------------------------------------------------------------- |
|
526 | #--------------------------------------------------------------------------- | |
527 | # 'ConsoleWidget' abstract interface |
|
527 | # 'ConsoleWidget' abstract interface | |
528 | #--------------------------------------------------------------------------- |
|
528 | #--------------------------------------------------------------------------- | |
529 |
|
529 | |||
530 | def _is_complete(self, source, interactive): |
|
530 | def _is_complete(self, source, interactive): | |
531 | """ Returns whether 'source' can be executed. When triggered by an |
|
531 | """ Returns whether 'source' can be executed. When triggered by an | |
532 | Enter/Return key press, 'interactive' is True; otherwise, it is |
|
532 | Enter/Return key press, 'interactive' is True; otherwise, it is | |
533 | False. |
|
533 | False. | |
534 | """ |
|
534 | """ | |
535 | raise NotImplementedError |
|
535 | raise NotImplementedError | |
536 |
|
536 | |||
537 | def _execute(self, source, hidden): |
|
537 | def _execute(self, source, hidden): | |
538 | """ Execute 'source'. If 'hidden', do not show any output. |
|
538 | """ Execute 'source'. If 'hidden', do not show any output. | |
539 | """ |
|
539 | """ | |
540 | raise NotImplementedError |
|
540 | raise NotImplementedError | |
541 |
|
541 | |||
542 | def _prompt_started_hook(self): |
|
542 | def _prompt_started_hook(self): | |
543 | """ Called immediately after a new prompt is displayed. |
|
543 | """ Called immediately after a new prompt is displayed. | |
544 | """ |
|
544 | """ | |
545 | pass |
|
545 | pass | |
546 |
|
546 | |||
547 | def _prompt_finished_hook(self): |
|
547 | def _prompt_finished_hook(self): | |
548 | """ Called immediately after a prompt is finished, i.e. when some input |
|
548 | """ Called immediately after a prompt is finished, i.e. when some input | |
549 | will be processed and a new prompt displayed. |
|
549 | will be processed and a new prompt displayed. | |
550 | """ |
|
550 | """ | |
551 | pass |
|
551 | pass | |
552 |
|
552 | |||
553 | def _up_pressed(self): |
|
553 | def _up_pressed(self): | |
554 | """ Called when the up key is pressed. Returns whether to continue |
|
554 | """ Called when the up key is pressed. Returns whether to continue | |
555 | processing the event. |
|
555 | processing the event. | |
556 | """ |
|
556 | """ | |
557 | return True |
|
557 | return True | |
558 |
|
558 | |||
559 | def _down_pressed(self): |
|
559 | def _down_pressed(self): | |
560 | """ Called when the down key is pressed. Returns whether to continue |
|
560 | """ Called when the down key is pressed. Returns whether to continue | |
561 | processing the event. |
|
561 | processing the event. | |
562 | """ |
|
562 | """ | |
563 | return True |
|
563 | return True | |
564 |
|
564 | |||
565 | def _tab_pressed(self): |
|
565 | def _tab_pressed(self): | |
566 | """ Called when the tab key is pressed. Returns whether to continue |
|
566 | """ Called when the tab key is pressed. Returns whether to continue | |
567 | processing the event. |
|
567 | processing the event. | |
568 | """ |
|
568 | """ | |
569 | return False |
|
569 | return False | |
570 |
|
570 | |||
571 | #-------------------------------------------------------------------------- |
|
571 | #-------------------------------------------------------------------------- | |
572 | # 'ConsoleWidget' protected interface |
|
572 | # 'ConsoleWidget' protected interface | |
573 | #-------------------------------------------------------------------------- |
|
573 | #-------------------------------------------------------------------------- | |
574 |
|
574 | |||
575 | def _append_html(self, html): |
|
575 | def _append_html(self, html): | |
576 | """ Appends html at the end of the console buffer. |
|
576 | """ Appends html at the end of the console buffer. | |
577 | """ |
|
577 | """ | |
578 | cursor = self._get_end_cursor() |
|
578 | cursor = self._get_end_cursor() | |
579 | self._insert_html(cursor, html) |
|
579 | self._insert_html(cursor, html) | |
580 |
|
580 | |||
581 | def _append_html_fetching_plain_text(self, html): |
|
581 | def _append_html_fetching_plain_text(self, html): | |
582 | """ Appends 'html', then returns the plain text version of it. |
|
582 | """ Appends 'html', then returns the plain text version of it. | |
583 | """ |
|
583 | """ | |
584 | cursor = self._get_end_cursor() |
|
584 | cursor = self._get_end_cursor() | |
585 | return self._insert_html_fetching_plain_text(cursor, html) |
|
585 | return self._insert_html_fetching_plain_text(cursor, html) | |
586 |
|
586 | |||
587 | def _append_plain_text(self, text): |
|
587 | def _append_plain_text(self, text): | |
588 | """ Appends plain text at the end of the console buffer, processing |
|
588 | """ Appends plain text at the end of the console buffer, processing | |
589 | ANSI codes if enabled. |
|
589 | ANSI codes if enabled. | |
590 | """ |
|
590 | """ | |
591 | cursor = self._get_end_cursor() |
|
591 | cursor = self._get_end_cursor() | |
592 | self._insert_plain_text(cursor, text) |
|
592 | self._insert_plain_text(cursor, text) | |
593 |
|
593 | |||
594 | def _append_plain_text_keeping_prompt(self, text): |
|
594 | def _append_plain_text_keeping_prompt(self, text): | |
595 | """ Writes 'text' after the current prompt, then restores the old prompt |
|
595 | """ Writes 'text' after the current prompt, then restores the old prompt | |
596 | with its old input buffer. |
|
596 | with its old input buffer. | |
597 | """ |
|
597 | """ | |
598 | input_buffer = self.input_buffer |
|
598 | input_buffer = self.input_buffer | |
599 | self._append_plain_text('\n') |
|
599 | self._append_plain_text('\n') | |
600 | self._prompt_finished() |
|
600 | self._prompt_finished() | |
601 |
|
601 | |||
602 | self._append_plain_text(text) |
|
602 | self._append_plain_text(text) | |
603 | self._show_prompt() |
|
603 | self._show_prompt() | |
604 | self.input_buffer = input_buffer |
|
604 | self.input_buffer = input_buffer | |
605 |
|
605 | |||
606 | def _cancel_text_completion(self): |
|
606 | def _cancel_text_completion(self): | |
607 | """ If text completion is progress, cancel it. |
|
607 | """ If text completion is progress, cancel it. | |
608 | """ |
|
608 | """ | |
609 | if self._text_completing_pos: |
|
609 | if self._text_completing_pos: | |
610 | self._clear_temporary_buffer() |
|
610 | self._clear_temporary_buffer() | |
611 | self._text_completing_pos = 0 |
|
611 | self._text_completing_pos = 0 | |
612 |
|
612 | |||
613 | def _clear_temporary_buffer(self): |
|
613 | def _clear_temporary_buffer(self): | |
614 | """ Clears the "temporary text" buffer, i.e. all the text following |
|
614 | """ Clears the "temporary text" buffer, i.e. all the text following | |
615 | the prompt region. |
|
615 | the prompt region. | |
616 | """ |
|
616 | """ | |
617 | # Select and remove all text below the input buffer. |
|
617 | # Select and remove all text below the input buffer. | |
618 | cursor = self._get_prompt_cursor() |
|
618 | cursor = self._get_prompt_cursor() | |
619 | prompt = self._continuation_prompt.lstrip() |
|
619 | prompt = self._continuation_prompt.lstrip() | |
620 | while cursor.movePosition(QtGui.QTextCursor.NextBlock): |
|
620 | while cursor.movePosition(QtGui.QTextCursor.NextBlock): | |
621 | temp_cursor = QtGui.QTextCursor(cursor) |
|
621 | temp_cursor = QtGui.QTextCursor(cursor) | |
622 | temp_cursor.select(QtGui.QTextCursor.BlockUnderCursor) |
|
622 | temp_cursor.select(QtGui.QTextCursor.BlockUnderCursor) | |
623 | text = str(temp_cursor.selection().toPlainText()).lstrip() |
|
623 | text = str(temp_cursor.selection().toPlainText()).lstrip() | |
624 | if not text.startswith(prompt): |
|
624 | if not text.startswith(prompt): | |
625 | break |
|
625 | break | |
626 | else: |
|
626 | else: | |
627 | # We've reached the end of the input buffer and no text follows. |
|
627 | # We've reached the end of the input buffer and no text follows. | |
628 | return |
|
628 | return | |
629 | cursor.movePosition(QtGui.QTextCursor.Left) # Grab the newline. |
|
629 | cursor.movePosition(QtGui.QTextCursor.Left) # Grab the newline. | |
630 | cursor.movePosition(QtGui.QTextCursor.End, |
|
630 | cursor.movePosition(QtGui.QTextCursor.End, | |
631 | QtGui.QTextCursor.KeepAnchor) |
|
631 | QtGui.QTextCursor.KeepAnchor) | |
632 | cursor.removeSelectedText() |
|
632 | cursor.removeSelectedText() | |
633 |
|
633 | |||
634 | # After doing this, we have no choice but to clear the undo/redo |
|
634 | # After doing this, we have no choice but to clear the undo/redo | |
635 | # history. Otherwise, the text is not "temporary" at all, because it |
|
635 | # history. Otherwise, the text is not "temporary" at all, because it | |
636 | # can be recalled with undo/redo. Unfortunately, Qt does not expose |
|
636 | # can be recalled with undo/redo. Unfortunately, Qt does not expose | |
637 | # fine-grained control to the undo/redo system. |
|
637 | # fine-grained control to the undo/redo system. | |
638 | if self._control.isUndoRedoEnabled(): |
|
638 | if self._control.isUndoRedoEnabled(): | |
639 | self._control.setUndoRedoEnabled(False) |
|
639 | self._control.setUndoRedoEnabled(False) | |
640 | self._control.setUndoRedoEnabled(True) |
|
640 | self._control.setUndoRedoEnabled(True) | |
641 |
|
641 | |||
642 | def _complete_with_items(self, cursor, items): |
|
642 | def _complete_with_items(self, cursor, items): | |
643 | """ Performs completion with 'items' at the specified cursor location. |
|
643 | """ Performs completion with 'items' at the specified cursor location. | |
644 | """ |
|
644 | """ | |
645 | self._cancel_text_completion() |
|
645 | self._cancel_text_completion() | |
646 |
|
646 | |||
647 | if len(items) == 1: |
|
647 | if len(items) == 1: | |
648 | cursor.setPosition(self._control.textCursor().position(), |
|
648 | cursor.setPosition(self._control.textCursor().position(), | |
649 | QtGui.QTextCursor.KeepAnchor) |
|
649 | QtGui.QTextCursor.KeepAnchor) | |
650 | cursor.insertText(items[0]) |
|
650 | cursor.insertText(items[0]) | |
651 |
|
651 | |||
652 | elif len(items) > 1: |
|
652 | elif len(items) > 1: | |
653 | current_pos = self._control.textCursor().position() |
|
653 | current_pos = self._control.textCursor().position() | |
654 | prefix = commonprefix(items) |
|
654 | prefix = commonprefix(items) | |
655 | if prefix: |
|
655 | if prefix: | |
656 | cursor.setPosition(current_pos, QtGui.QTextCursor.KeepAnchor) |
|
656 | cursor.setPosition(current_pos, QtGui.QTextCursor.KeepAnchor) | |
657 | cursor.insertText(prefix) |
|
657 | cursor.insertText(prefix) | |
658 | current_pos = cursor.position() |
|
658 | current_pos = cursor.position() | |
659 |
|
659 | |||
660 | if self.gui_completion: |
|
660 | if self.gui_completion: | |
661 | cursor.movePosition(QtGui.QTextCursor.Left, n=len(prefix)) |
|
661 | cursor.movePosition(QtGui.QTextCursor.Left, n=len(prefix)) | |
662 | self._completion_widget.show_items(cursor, items) |
|
662 | self._completion_widget.show_items(cursor, items) | |
663 | else: |
|
663 | else: | |
664 | cursor.beginEditBlock() |
|
664 | cursor.beginEditBlock() | |
665 | self._append_plain_text('\n') |
|
665 | self._append_plain_text('\n') | |
666 | self._page(self._format_as_columns(items)) |
|
666 | self._page(self._format_as_columns(items)) | |
667 | cursor.endEditBlock() |
|
667 | cursor.endEditBlock() | |
668 |
|
668 | |||
669 | cursor.setPosition(current_pos) |
|
669 | cursor.setPosition(current_pos) | |
670 | self._control.moveCursor(QtGui.QTextCursor.End) |
|
670 | self._control.moveCursor(QtGui.QTextCursor.End) | |
671 | self._control.setTextCursor(cursor) |
|
671 | self._control.setTextCursor(cursor) | |
672 | self._text_completing_pos = current_pos |
|
672 | self._text_completing_pos = current_pos | |
673 |
|
673 | |||
674 | def _context_menu_make(self, pos): |
|
674 | def _context_menu_make(self, pos): | |
675 | """ Creates a context menu for the given QPoint (in widget coordinates). |
|
675 | """ Creates a context menu for the given QPoint (in widget coordinates). | |
676 | """ |
|
676 | """ | |
677 | menu = QtGui.QMenu() |
|
677 | menu = QtGui.QMenu() | |
678 |
|
678 | |||
679 | cut_action = menu.addAction('Cut', self.cut) |
|
679 | cut_action = menu.addAction('Cut', self.cut) | |
680 | cut_action.setEnabled(self.can_cut()) |
|
680 | cut_action.setEnabled(self.can_cut()) | |
681 | cut_action.setShortcut(QtGui.QKeySequence.Cut) |
|
681 | cut_action.setShortcut(QtGui.QKeySequence.Cut) | |
682 |
|
682 | |||
683 | copy_action = menu.addAction('Copy', self.copy) |
|
683 | copy_action = menu.addAction('Copy', self.copy) | |
684 | copy_action.setEnabled(self.can_copy()) |
|
684 | copy_action.setEnabled(self.can_copy()) | |
685 | copy_action.setShortcut(QtGui.QKeySequence.Copy) |
|
685 | copy_action.setShortcut(QtGui.QKeySequence.Copy) | |
686 |
|
686 | |||
687 | paste_action = menu.addAction('Paste', self.paste) |
|
687 | paste_action = menu.addAction('Paste', self.paste) | |
688 | paste_action.setEnabled(self.can_paste()) |
|
688 | paste_action.setEnabled(self.can_paste()) | |
689 | paste_action.setShortcut(QtGui.QKeySequence.Paste) |
|
689 | paste_action.setShortcut(QtGui.QKeySequence.Paste) | |
690 |
|
690 | |||
691 | menu.addSeparator() |
|
691 | menu.addSeparator() | |
692 | menu.addAction('Select All', self.select_all) |
|
692 | menu.addAction('Select All', self.select_all) | |
693 |
|
693 | |||
694 | return menu |
|
694 | return menu | |
695 |
|
695 | |||
696 | def _control_key_down(self, modifiers, include_command=True): |
|
696 | def _control_key_down(self, modifiers, include_command=True): | |
697 | """ Given a KeyboardModifiers flags object, return whether the Control |
|
697 | """ Given a KeyboardModifiers flags object, return whether the Control | |
698 | key is down. |
|
698 | key is down. | |
699 |
|
699 | |||
700 | Parameters: |
|
700 | Parameters: | |
701 | ----------- |
|
701 | ----------- | |
702 | include_command : bool, optional (default True) |
|
702 | include_command : bool, optional (default True) | |
703 | Whether to treat the Command key as a (mutually exclusive) synonym |
|
703 | Whether to treat the Command key as a (mutually exclusive) synonym | |
704 | for Control when in Mac OS. |
|
704 | for Control when in Mac OS. | |
705 | """ |
|
705 | """ | |
706 | # Note that on Mac OS, ControlModifier corresponds to the Command key |
|
706 | # Note that on Mac OS, ControlModifier corresponds to the Command key | |
707 | # while MetaModifier corresponds to the Control key. |
|
707 | # while MetaModifier corresponds to the Control key. | |
708 | if sys.platform == 'darwin': |
|
708 | if sys.platform == 'darwin': | |
709 | down = include_command and (modifiers & QtCore.Qt.ControlModifier) |
|
709 | down = include_command and (modifiers & QtCore.Qt.ControlModifier) | |
710 | return bool(down) ^ bool(modifiers & QtCore.Qt.MetaModifier) |
|
710 | return bool(down) ^ bool(modifiers & QtCore.Qt.MetaModifier) | |
711 | else: |
|
711 | else: | |
712 | return bool(modifiers & QtCore.Qt.ControlModifier) |
|
712 | return bool(modifiers & QtCore.Qt.ControlModifier) | |
713 |
|
713 | |||
714 | def _create_control(self): |
|
714 | def _create_control(self): | |
715 | """ Creates and connects the underlying text widget. |
|
715 | """ Creates and connects the underlying text widget. | |
716 | """ |
|
716 | """ | |
717 | # Create the underlying control. |
|
717 | # Create the underlying control. | |
718 | if self.kind == 'plain': |
|
718 | if self.kind == 'plain': | |
719 | control = QtGui.QPlainTextEdit() |
|
719 | control = QtGui.QPlainTextEdit() | |
720 | elif self.kind == 'rich': |
|
720 | elif self.kind == 'rich': | |
721 | control = QtGui.QTextEdit() |
|
721 | control = QtGui.QTextEdit() | |
722 | control.setAcceptRichText(False) |
|
722 | control.setAcceptRichText(False) | |
723 |
|
723 | |||
724 | # Install event filters. The filter on the viewport is needed for |
|
724 | # Install event filters. The filter on the viewport is needed for | |
725 | # mouse events and drag events. |
|
725 | # mouse events and drag events. | |
726 | control.installEventFilter(self) |
|
726 | control.installEventFilter(self) | |
727 | control.viewport().installEventFilter(self) |
|
727 | control.viewport().installEventFilter(self) | |
728 |
|
728 | |||
729 | # Connect signals. |
|
729 | # Connect signals. | |
730 | control.cursorPositionChanged.connect(self._cursor_position_changed) |
|
730 | control.cursorPositionChanged.connect(self._cursor_position_changed) | |
731 | control.customContextMenuRequested.connect( |
|
731 | control.customContextMenuRequested.connect( | |
732 | self._custom_context_menu_requested) |
|
732 | self._custom_context_menu_requested) | |
733 | control.copyAvailable.connect(self.copy_available) |
|
733 | control.copyAvailable.connect(self.copy_available) | |
734 | control.redoAvailable.connect(self.redo_available) |
|
734 | control.redoAvailable.connect(self.redo_available) | |
735 | control.undoAvailable.connect(self.undo_available) |
|
735 | control.undoAvailable.connect(self.undo_available) | |
736 |
|
736 | |||
737 | # Hijack the document size change signal to prevent Qt from adjusting |
|
737 | # Hijack the document size change signal to prevent Qt from adjusting | |
738 | # the viewport's scrollbar. We are relying on an implementation detail |
|
738 | # the viewport's scrollbar. We are relying on an implementation detail | |
739 | # of Q(Plain)TextEdit here, which is potentially dangerous, but without |
|
739 | # of Q(Plain)TextEdit here, which is potentially dangerous, but without | |
740 | # this functionality we cannot create a nice terminal interface. |
|
740 | # this functionality we cannot create a nice terminal interface. | |
741 | layout = control.document().documentLayout() |
|
741 | layout = control.document().documentLayout() | |
742 | layout.documentSizeChanged.disconnect() |
|
742 | layout.documentSizeChanged.disconnect() | |
743 | layout.documentSizeChanged.connect(self._adjust_scrollbars) |
|
743 | layout.documentSizeChanged.connect(self._adjust_scrollbars) | |
744 |
|
744 | |||
745 | # Configure the control. |
|
745 | # Configure the control. | |
746 | control.setContextMenuPolicy(QtCore.Qt.CustomContextMenu) |
|
746 | control.setContextMenuPolicy(QtCore.Qt.CustomContextMenu) | |
747 | control.setReadOnly(True) |
|
747 | control.setReadOnly(True) | |
748 | control.setUndoRedoEnabled(False) |
|
748 | control.setUndoRedoEnabled(False) | |
749 | control.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOn) |
|
749 | control.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOn) | |
750 | return control |
|
750 | return control | |
751 |
|
751 | |||
752 | def _create_page_control(self): |
|
752 | def _create_page_control(self): | |
753 | """ Creates and connects the underlying paging widget. |
|
753 | """ Creates and connects the underlying paging widget. | |
754 | """ |
|
754 | """ | |
755 | control = QtGui.QPlainTextEdit() |
|
755 | if self.kind == 'plain': | |
|
756 | control = QtGui.QPlainTextEdit() | |||
|
757 | elif self.kind == 'rich': | |||
|
758 | control = QtGui.QTextEdit() | |||
756 | control.installEventFilter(self) |
|
759 | control.installEventFilter(self) | |
757 | control.setReadOnly(True) |
|
760 | control.setReadOnly(True) | |
758 | control.setUndoRedoEnabled(False) |
|
761 | control.setUndoRedoEnabled(False) | |
759 | control.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOn) |
|
762 | control.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOn) | |
760 | return control |
|
763 | return control | |
761 |
|
764 | |||
762 | def _event_filter_console_keypress(self, event): |
|
765 | def _event_filter_console_keypress(self, event): | |
763 | """ Filter key events for the underlying text widget to create a |
|
766 | """ Filter key events for the underlying text widget to create a | |
764 | console-like interface. |
|
767 | console-like interface. | |
765 | """ |
|
768 | """ | |
766 | intercepted = False |
|
769 | intercepted = False | |
767 | cursor = self._control.textCursor() |
|
770 | cursor = self._control.textCursor() | |
768 | position = cursor.position() |
|
771 | position = cursor.position() | |
769 | key = event.key() |
|
772 | key = event.key() | |
770 | ctrl_down = self._control_key_down(event.modifiers()) |
|
773 | ctrl_down = self._control_key_down(event.modifiers()) | |
771 | alt_down = event.modifiers() & QtCore.Qt.AltModifier |
|
774 | alt_down = event.modifiers() & QtCore.Qt.AltModifier | |
772 | shift_down = event.modifiers() & QtCore.Qt.ShiftModifier |
|
775 | shift_down = event.modifiers() & QtCore.Qt.ShiftModifier | |
773 |
|
776 | |||
774 | #------ Special sequences ---------------------------------------------- |
|
777 | #------ Special sequences ---------------------------------------------- | |
775 |
|
778 | |||
776 | if event.matches(QtGui.QKeySequence.Copy): |
|
779 | if event.matches(QtGui.QKeySequence.Copy): | |
777 | self.copy() |
|
780 | self.copy() | |
778 | intercepted = True |
|
781 | intercepted = True | |
779 |
|
782 | |||
780 | elif event.matches(QtGui.QKeySequence.Cut): |
|
783 | elif event.matches(QtGui.QKeySequence.Cut): | |
781 | self.cut() |
|
784 | self.cut() | |
782 | intercepted = True |
|
785 | intercepted = True | |
783 |
|
786 | |||
784 | elif event.matches(QtGui.QKeySequence.Paste): |
|
787 | elif event.matches(QtGui.QKeySequence.Paste): | |
785 | self.paste() |
|
788 | self.paste() | |
786 | intercepted = True |
|
789 | intercepted = True | |
787 |
|
790 | |||
788 | #------ Special modifier logic ----------------------------------------- |
|
791 | #------ Special modifier logic ----------------------------------------- | |
789 |
|
792 | |||
790 | elif key in (QtCore.Qt.Key_Return, QtCore.Qt.Key_Enter): |
|
793 | elif key in (QtCore.Qt.Key_Return, QtCore.Qt.Key_Enter): | |
791 | intercepted = True |
|
794 | intercepted = True | |
792 |
|
795 | |||
793 | # Special handling when tab completing in text mode. |
|
796 | # Special handling when tab completing in text mode. | |
794 | self._cancel_text_completion() |
|
797 | self._cancel_text_completion() | |
795 |
|
798 | |||
796 | if self._in_buffer(position): |
|
799 | if self._in_buffer(position): | |
797 | if self._reading: |
|
800 | if self._reading: | |
798 | self._append_plain_text('\n') |
|
801 | self._append_plain_text('\n') | |
799 | self._reading = False |
|
802 | self._reading = False | |
800 | if self._reading_callback: |
|
803 | if self._reading_callback: | |
801 | self._reading_callback() |
|
804 | self._reading_callback() | |
802 |
|
805 | |||
803 | # If there is only whitespace after the cursor, execute. |
|
806 | # If there is only whitespace after the cursor, execute. | |
804 | # Otherwise, split the line with a continuation prompt. |
|
807 | # Otherwise, split the line with a continuation prompt. | |
805 | elif not self._executing: |
|
808 | elif not self._executing: | |
806 | cursor.movePosition(QtGui.QTextCursor.End, |
|
809 | cursor.movePosition(QtGui.QTextCursor.End, | |
807 | QtGui.QTextCursor.KeepAnchor) |
|
810 | QtGui.QTextCursor.KeepAnchor) | |
808 | at_end = cursor.selectedText().trimmed().isEmpty() |
|
811 | at_end = cursor.selectedText().trimmed().isEmpty() | |
809 | if (at_end or shift_down) and not ctrl_down: |
|
812 | if (at_end or shift_down) and not ctrl_down: | |
810 | self.execute(interactive = not shift_down) |
|
813 | self.execute(interactive = not shift_down) | |
811 | else: |
|
814 | else: | |
812 | # Do this inside an edit block for clean undo/redo. |
|
815 | # Do this inside an edit block for clean undo/redo. | |
813 | cursor.beginEditBlock() |
|
816 | cursor.beginEditBlock() | |
814 | cursor.setPosition(position) |
|
817 | cursor.setPosition(position) | |
815 | cursor.insertText('\n') |
|
818 | cursor.insertText('\n') | |
816 | self._insert_continuation_prompt(cursor) |
|
819 | self._insert_continuation_prompt(cursor) | |
817 | cursor.endEditBlock() |
|
820 | cursor.endEditBlock() | |
818 |
|
821 | |||
819 | # Ensure that the whole input buffer is visible. |
|
822 | # Ensure that the whole input buffer is visible. | |
820 | # FIXME: This will not be usable if the input buffer is |
|
823 | # FIXME: This will not be usable if the input buffer is | |
821 | # taller than the console widget. |
|
824 | # taller than the console widget. | |
822 | self._control.moveCursor(QtGui.QTextCursor.End) |
|
825 | self._control.moveCursor(QtGui.QTextCursor.End) | |
823 | self._control.setTextCursor(cursor) |
|
826 | self._control.setTextCursor(cursor) | |
824 |
|
827 | |||
825 | #------ Control/Cmd modifier ------------------------------------------- |
|
828 | #------ Control/Cmd modifier ------------------------------------------- | |
826 |
|
829 | |||
827 | elif ctrl_down: |
|
830 | elif ctrl_down: | |
828 | if key == QtCore.Qt.Key_G: |
|
831 | if key == QtCore.Qt.Key_G: | |
829 | self._keyboard_quit() |
|
832 | self._keyboard_quit() | |
830 | intercepted = True |
|
833 | intercepted = True | |
831 |
|
834 | |||
832 | elif key == QtCore.Qt.Key_K: |
|
835 | elif key == QtCore.Qt.Key_K: | |
833 | if self._in_buffer(position): |
|
836 | if self._in_buffer(position): | |
834 | cursor.movePosition(QtGui.QTextCursor.EndOfLine, |
|
837 | cursor.movePosition(QtGui.QTextCursor.EndOfLine, | |
835 | QtGui.QTextCursor.KeepAnchor) |
|
838 | QtGui.QTextCursor.KeepAnchor) | |
836 | if not cursor.hasSelection(): |
|
839 | if not cursor.hasSelection(): | |
837 | # Line deletion (remove continuation prompt) |
|
840 | # Line deletion (remove continuation prompt) | |
838 | cursor.movePosition(QtGui.QTextCursor.NextBlock, |
|
841 | cursor.movePosition(QtGui.QTextCursor.NextBlock, | |
839 | QtGui.QTextCursor.KeepAnchor) |
|
842 | QtGui.QTextCursor.KeepAnchor) | |
840 | cursor.movePosition(QtGui.QTextCursor.Right, |
|
843 | cursor.movePosition(QtGui.QTextCursor.Right, | |
841 | QtGui.QTextCursor.KeepAnchor, |
|
844 | QtGui.QTextCursor.KeepAnchor, | |
842 | len(self._continuation_prompt)) |
|
845 | len(self._continuation_prompt)) | |
843 | cursor.removeSelectedText() |
|
846 | cursor.removeSelectedText() | |
844 | intercepted = True |
|
847 | intercepted = True | |
845 |
|
848 | |||
846 | elif key == QtCore.Qt.Key_L: |
|
849 | elif key == QtCore.Qt.Key_L: | |
847 | self.prompt_to_top() |
|
850 | self.prompt_to_top() | |
848 | intercepted = True |
|
851 | intercepted = True | |
849 |
|
852 | |||
850 | elif key == QtCore.Qt.Key_O: |
|
853 | elif key == QtCore.Qt.Key_O: | |
851 | if self._page_control and self._page_control.isVisible(): |
|
854 | if self._page_control and self._page_control.isVisible(): | |
852 | self._page_control.setFocus() |
|
855 | self._page_control.setFocus() | |
853 | intercept = True |
|
856 | intercept = True | |
854 |
|
857 | |||
855 | elif key == QtCore.Qt.Key_Y: |
|
858 | elif key == QtCore.Qt.Key_Y: | |
856 | self.paste() |
|
859 | self.paste() | |
857 | intercepted = True |
|
860 | intercepted = True | |
858 |
|
861 | |||
859 | elif key in (QtCore.Qt.Key_Backspace, QtCore.Qt.Key_Delete): |
|
862 | elif key in (QtCore.Qt.Key_Backspace, QtCore.Qt.Key_Delete): | |
860 | intercepted = True |
|
863 | intercepted = True | |
861 |
|
864 | |||
862 | #------ Alt modifier --------------------------------------------------- |
|
865 | #------ Alt modifier --------------------------------------------------- | |
863 |
|
866 | |||
864 | elif alt_down: |
|
867 | elif alt_down: | |
865 | if key == QtCore.Qt.Key_B: |
|
868 | if key == QtCore.Qt.Key_B: | |
866 | self._set_cursor(self._get_word_start_cursor(position)) |
|
869 | self._set_cursor(self._get_word_start_cursor(position)) | |
867 | intercepted = True |
|
870 | intercepted = True | |
868 |
|
871 | |||
869 | elif key == QtCore.Qt.Key_F: |
|
872 | elif key == QtCore.Qt.Key_F: | |
870 | self._set_cursor(self._get_word_end_cursor(position)) |
|
873 | self._set_cursor(self._get_word_end_cursor(position)) | |
871 | intercepted = True |
|
874 | intercepted = True | |
872 |
|
875 | |||
873 | elif key == QtCore.Qt.Key_Backspace: |
|
876 | elif key == QtCore.Qt.Key_Backspace: | |
874 | cursor = self._get_word_start_cursor(position) |
|
877 | cursor = self._get_word_start_cursor(position) | |
875 | cursor.setPosition(position, QtGui.QTextCursor.KeepAnchor) |
|
878 | cursor.setPosition(position, QtGui.QTextCursor.KeepAnchor) | |
876 | cursor.removeSelectedText() |
|
879 | cursor.removeSelectedText() | |
877 | intercepted = True |
|
880 | intercepted = True | |
878 |
|
881 | |||
879 | elif key == QtCore.Qt.Key_D: |
|
882 | elif key == QtCore.Qt.Key_D: | |
880 | cursor = self._get_word_end_cursor(position) |
|
883 | cursor = self._get_word_end_cursor(position) | |
881 | cursor.setPosition(position, QtGui.QTextCursor.KeepAnchor) |
|
884 | cursor.setPosition(position, QtGui.QTextCursor.KeepAnchor) | |
882 | cursor.removeSelectedText() |
|
885 | cursor.removeSelectedText() | |
883 | intercepted = True |
|
886 | intercepted = True | |
884 |
|
887 | |||
885 | elif key == QtCore.Qt.Key_Delete: |
|
888 | elif key == QtCore.Qt.Key_Delete: | |
886 | intercepted = True |
|
889 | intercepted = True | |
887 |
|
890 | |||
888 | elif key == QtCore.Qt.Key_Greater: |
|
891 | elif key == QtCore.Qt.Key_Greater: | |
889 | self._control.moveCursor(QtGui.QTextCursor.End) |
|
892 | self._control.moveCursor(QtGui.QTextCursor.End) | |
890 | intercepted = True |
|
893 | intercepted = True | |
891 |
|
894 | |||
892 | elif key == QtCore.Qt.Key_Less: |
|
895 | elif key == QtCore.Qt.Key_Less: | |
893 | self._control.setTextCursor(self._get_prompt_cursor()) |
|
896 | self._control.setTextCursor(self._get_prompt_cursor()) | |
894 | intercepted = True |
|
897 | intercepted = True | |
895 |
|
898 | |||
896 | #------ No modifiers --------------------------------------------------- |
|
899 | #------ No modifiers --------------------------------------------------- | |
897 |
|
900 | |||
898 | else: |
|
901 | else: | |
899 | if key == QtCore.Qt.Key_Escape: |
|
902 | if key == QtCore.Qt.Key_Escape: | |
900 | self._keyboard_quit() |
|
903 | self._keyboard_quit() | |
901 | intercepted = True |
|
904 | intercepted = True | |
902 |
|
905 | |||
903 | elif key == QtCore.Qt.Key_Up: |
|
906 | elif key == QtCore.Qt.Key_Up: | |
904 | if self._reading or not self._up_pressed(): |
|
907 | if self._reading or not self._up_pressed(): | |
905 | intercepted = True |
|
908 | intercepted = True | |
906 | else: |
|
909 | else: | |
907 | prompt_line = self._get_prompt_cursor().blockNumber() |
|
910 | prompt_line = self._get_prompt_cursor().blockNumber() | |
908 | intercepted = cursor.blockNumber() <= prompt_line |
|
911 | intercepted = cursor.blockNumber() <= prompt_line | |
909 |
|
912 | |||
910 | elif key == QtCore.Qt.Key_Down: |
|
913 | elif key == QtCore.Qt.Key_Down: | |
911 | if self._reading or not self._down_pressed(): |
|
914 | if self._reading or not self._down_pressed(): | |
912 | intercepted = True |
|
915 | intercepted = True | |
913 | else: |
|
916 | else: | |
914 | end_line = self._get_end_cursor().blockNumber() |
|
917 | end_line = self._get_end_cursor().blockNumber() | |
915 | intercepted = cursor.blockNumber() == end_line |
|
918 | intercepted = cursor.blockNumber() == end_line | |
916 |
|
919 | |||
917 | elif key == QtCore.Qt.Key_Tab: |
|
920 | elif key == QtCore.Qt.Key_Tab: | |
918 | if not self._reading: |
|
921 | if not self._reading: | |
919 | intercepted = not self._tab_pressed() |
|
922 | intercepted = not self._tab_pressed() | |
920 |
|
923 | |||
921 | elif key == QtCore.Qt.Key_Left: |
|
924 | elif key == QtCore.Qt.Key_Left: | |
922 | intercepted = not self._in_buffer(position - 1) |
|
925 | intercepted = not self._in_buffer(position - 1) | |
923 |
|
926 | |||
924 | elif key == QtCore.Qt.Key_Home: |
|
927 | elif key == QtCore.Qt.Key_Home: | |
925 | start_line = cursor.blockNumber() |
|
928 | start_line = cursor.blockNumber() | |
926 | if start_line == self._get_prompt_cursor().blockNumber(): |
|
929 | if start_line == self._get_prompt_cursor().blockNumber(): | |
927 | start_pos = self._prompt_pos |
|
930 | start_pos = self._prompt_pos | |
928 | else: |
|
931 | else: | |
929 | cursor.movePosition(QtGui.QTextCursor.StartOfBlock, |
|
932 | cursor.movePosition(QtGui.QTextCursor.StartOfBlock, | |
930 | QtGui.QTextCursor.KeepAnchor) |
|
933 | QtGui.QTextCursor.KeepAnchor) | |
931 | start_pos = cursor.position() |
|
934 | start_pos = cursor.position() | |
932 | start_pos += len(self._continuation_prompt) |
|
935 | start_pos += len(self._continuation_prompt) | |
933 | cursor.setPosition(position) |
|
936 | cursor.setPosition(position) | |
934 | if shift_down and self._in_buffer(position): |
|
937 | if shift_down and self._in_buffer(position): | |
935 | cursor.setPosition(start_pos, QtGui.QTextCursor.KeepAnchor) |
|
938 | cursor.setPosition(start_pos, QtGui.QTextCursor.KeepAnchor) | |
936 | else: |
|
939 | else: | |
937 | cursor.setPosition(start_pos) |
|
940 | cursor.setPosition(start_pos) | |
938 | self._set_cursor(cursor) |
|
941 | self._set_cursor(cursor) | |
939 | intercepted = True |
|
942 | intercepted = True | |
940 |
|
943 | |||
941 | elif key == QtCore.Qt.Key_Backspace: |
|
944 | elif key == QtCore.Qt.Key_Backspace: | |
942 |
|
945 | |||
943 | # Line deletion (remove continuation prompt) |
|
946 | # Line deletion (remove continuation prompt) | |
944 | line, col = cursor.blockNumber(), cursor.columnNumber() |
|
947 | line, col = cursor.blockNumber(), cursor.columnNumber() | |
945 | if not self._reading and \ |
|
948 | if not self._reading and \ | |
946 | col == len(self._continuation_prompt) and \ |
|
949 | col == len(self._continuation_prompt) and \ | |
947 | line > self._get_prompt_cursor().blockNumber(): |
|
950 | line > self._get_prompt_cursor().blockNumber(): | |
948 | cursor.beginEditBlock() |
|
951 | cursor.beginEditBlock() | |
949 | cursor.movePosition(QtGui.QTextCursor.StartOfBlock, |
|
952 | cursor.movePosition(QtGui.QTextCursor.StartOfBlock, | |
950 | QtGui.QTextCursor.KeepAnchor) |
|
953 | QtGui.QTextCursor.KeepAnchor) | |
951 | cursor.removeSelectedText() |
|
954 | cursor.removeSelectedText() | |
952 | cursor.deletePreviousChar() |
|
955 | cursor.deletePreviousChar() | |
953 | cursor.endEditBlock() |
|
956 | cursor.endEditBlock() | |
954 | intercepted = True |
|
957 | intercepted = True | |
955 |
|
958 | |||
956 | # Regular backwards deletion |
|
959 | # Regular backwards deletion | |
957 | else: |
|
960 | else: | |
958 | anchor = cursor.anchor() |
|
961 | anchor = cursor.anchor() | |
959 | if anchor == position: |
|
962 | if anchor == position: | |
960 | intercepted = not self._in_buffer(position - 1) |
|
963 | intercepted = not self._in_buffer(position - 1) | |
961 | else: |
|
964 | else: | |
962 | intercepted = not self._in_buffer(min(anchor, position)) |
|
965 | intercepted = not self._in_buffer(min(anchor, position)) | |
963 |
|
966 | |||
964 | elif key == QtCore.Qt.Key_Delete: |
|
967 | elif key == QtCore.Qt.Key_Delete: | |
965 |
|
968 | |||
966 | # Line deletion (remove continuation prompt) |
|
969 | # Line deletion (remove continuation prompt) | |
967 | if not self._reading and self._in_buffer(position) and \ |
|
970 | if not self._reading and self._in_buffer(position) and \ | |
968 | cursor.atBlockEnd() and not cursor.hasSelection(): |
|
971 | cursor.atBlockEnd() and not cursor.hasSelection(): | |
969 | cursor.movePosition(QtGui.QTextCursor.NextBlock, |
|
972 | cursor.movePosition(QtGui.QTextCursor.NextBlock, | |
970 | QtGui.QTextCursor.KeepAnchor) |
|
973 | QtGui.QTextCursor.KeepAnchor) | |
971 | cursor.movePosition(QtGui.QTextCursor.Right, |
|
974 | cursor.movePosition(QtGui.QTextCursor.Right, | |
972 | QtGui.QTextCursor.KeepAnchor, |
|
975 | QtGui.QTextCursor.KeepAnchor, | |
973 | len(self._continuation_prompt)) |
|
976 | len(self._continuation_prompt)) | |
974 | cursor.removeSelectedText() |
|
977 | cursor.removeSelectedText() | |
975 | intercepted = True |
|
978 | intercepted = True | |
976 |
|
979 | |||
977 | # Regular forwards deletion: |
|
980 | # Regular forwards deletion: | |
978 | else: |
|
981 | else: | |
979 | anchor = cursor.anchor() |
|
982 | anchor = cursor.anchor() | |
980 | intercepted = (not self._in_buffer(anchor) or |
|
983 | intercepted = (not self._in_buffer(anchor) or | |
981 | not self._in_buffer(position)) |
|
984 | not self._in_buffer(position)) | |
982 |
|
985 | |||
983 | # Don't move the cursor if control is down to allow copy-paste using |
|
986 | # Don't move the cursor if control is down to allow copy-paste using | |
984 | # the keyboard in any part of the buffer. |
|
987 | # the keyboard in any part of the buffer. | |
985 | if not ctrl_down: |
|
988 | if not ctrl_down: | |
986 | self._keep_cursor_in_buffer() |
|
989 | self._keep_cursor_in_buffer() | |
987 |
|
990 | |||
988 | return intercepted |
|
991 | return intercepted | |
989 |
|
992 | |||
990 | def _event_filter_page_keypress(self, event): |
|
993 | def _event_filter_page_keypress(self, event): | |
991 | """ Filter key events for the paging widget to create console-like |
|
994 | """ Filter key events for the paging widget to create console-like | |
992 | interface. |
|
995 | interface. | |
993 | """ |
|
996 | """ | |
994 | key = event.key() |
|
997 | key = event.key() | |
995 | ctrl_down = self._control_key_down(event.modifiers()) |
|
998 | ctrl_down = self._control_key_down(event.modifiers()) | |
996 | alt_down = event.modifiers() & QtCore.Qt.AltModifier |
|
999 | alt_down = event.modifiers() & QtCore.Qt.AltModifier | |
997 |
|
1000 | |||
998 | if ctrl_down: |
|
1001 | if ctrl_down: | |
999 | if key == QtCore.Qt.Key_O: |
|
1002 | if key == QtCore.Qt.Key_O: | |
1000 | self._control.setFocus() |
|
1003 | self._control.setFocus() | |
1001 | intercept = True |
|
1004 | intercept = True | |
1002 |
|
1005 | |||
1003 | elif alt_down: |
|
1006 | elif alt_down: | |
1004 | if key == QtCore.Qt.Key_Greater: |
|
1007 | if key == QtCore.Qt.Key_Greater: | |
1005 | self._page_control.moveCursor(QtGui.QTextCursor.End) |
|
1008 | self._page_control.moveCursor(QtGui.QTextCursor.End) | |
1006 | intercepted = True |
|
1009 | intercepted = True | |
1007 |
|
1010 | |||
1008 | elif key == QtCore.Qt.Key_Less: |
|
1011 | elif key == QtCore.Qt.Key_Less: | |
1009 | self._page_control.moveCursor(QtGui.QTextCursor.Start) |
|
1012 | self._page_control.moveCursor(QtGui.QTextCursor.Start) | |
1010 | intercepted = True |
|
1013 | intercepted = True | |
1011 |
|
1014 | |||
1012 | elif key in (QtCore.Qt.Key_Q, QtCore.Qt.Key_Escape): |
|
1015 | elif key in (QtCore.Qt.Key_Q, QtCore.Qt.Key_Escape): | |
1013 | if self._splitter: |
|
1016 | if self._splitter: | |
1014 | self._page_control.hide() |
|
1017 | self._page_control.hide() | |
1015 | else: |
|
1018 | else: | |
1016 | self.layout().setCurrentWidget(self._control) |
|
1019 | self.layout().setCurrentWidget(self._control) | |
1017 | return True |
|
1020 | return True | |
1018 |
|
1021 | |||
1019 | elif key in (QtCore.Qt.Key_Enter, QtCore.Qt.Key_Return): |
|
1022 | elif key in (QtCore.Qt.Key_Enter, QtCore.Qt.Key_Return): | |
1020 | new_event = QtGui.QKeyEvent(QtCore.QEvent.KeyPress, |
|
1023 | new_event = QtGui.QKeyEvent(QtCore.QEvent.KeyPress, | |
1021 | QtCore.Qt.Key_PageDown, |
|
1024 | QtCore.Qt.Key_PageDown, | |
1022 | QtCore.Qt.NoModifier) |
|
1025 | QtCore.Qt.NoModifier) | |
1023 | QtGui.qApp.sendEvent(self._page_control, new_event) |
|
1026 | QtGui.qApp.sendEvent(self._page_control, new_event) | |
1024 | return True |
|
1027 | return True | |
1025 |
|
1028 | |||
1026 | elif key == QtCore.Qt.Key_Backspace: |
|
1029 | elif key == QtCore.Qt.Key_Backspace: | |
1027 | new_event = QtGui.QKeyEvent(QtCore.QEvent.KeyPress, |
|
1030 | new_event = QtGui.QKeyEvent(QtCore.QEvent.KeyPress, | |
1028 | QtCore.Qt.Key_PageUp, |
|
1031 | QtCore.Qt.Key_PageUp, | |
1029 | QtCore.Qt.NoModifier) |
|
1032 | QtCore.Qt.NoModifier) | |
1030 | QtGui.qApp.sendEvent(self._page_control, new_event) |
|
1033 | QtGui.qApp.sendEvent(self._page_control, new_event) | |
1031 | return True |
|
1034 | return True | |
1032 |
|
1035 | |||
1033 | return False |
|
1036 | return False | |
1034 |
|
1037 | |||
1035 | def _format_as_columns(self, items, separator=' '): |
|
1038 | def _format_as_columns(self, items, separator=' '): | |
1036 | """ Transform a list of strings into a single string with columns. |
|
1039 | """ Transform a list of strings into a single string with columns. | |
1037 |
|
1040 | |||
1038 | Parameters |
|
1041 | Parameters | |
1039 | ---------- |
|
1042 | ---------- | |
1040 | items : sequence of strings |
|
1043 | items : sequence of strings | |
1041 | The strings to process. |
|
1044 | The strings to process. | |
1042 |
|
1045 | |||
1043 | separator : str, optional [default is two spaces] |
|
1046 | separator : str, optional [default is two spaces] | |
1044 | The string that separates columns. |
|
1047 | The string that separates columns. | |
1045 |
|
1048 | |||
1046 | Returns |
|
1049 | Returns | |
1047 | ------- |
|
1050 | ------- | |
1048 | The formatted string. |
|
1051 | The formatted string. | |
1049 | """ |
|
1052 | """ | |
1050 | # Note: this code is adapted from columnize 0.3.2. |
|
1053 | # Note: this code is adapted from columnize 0.3.2. | |
1051 | # See http://code.google.com/p/pycolumnize/ |
|
1054 | # See http://code.google.com/p/pycolumnize/ | |
1052 |
|
1055 | |||
1053 | # Calculate the number of characters available. |
|
1056 | # Calculate the number of characters available. | |
1054 | width = self._control.viewport().width() |
|
1057 | width = self._control.viewport().width() | |
1055 | char_width = QtGui.QFontMetrics(self.font).width(' ') |
|
1058 | char_width = QtGui.QFontMetrics(self.font).width(' ') | |
1056 | displaywidth = max(10, (width / char_width) - 1) |
|
1059 | displaywidth = max(10, (width / char_width) - 1) | |
1057 |
|
1060 | |||
1058 | # Some degenerate cases. |
|
1061 | # Some degenerate cases. | |
1059 | size = len(items) |
|
1062 | size = len(items) | |
1060 | if size == 0: |
|
1063 | if size == 0: | |
1061 | return '\n' |
|
1064 | return '\n' | |
1062 | elif size == 1: |
|
1065 | elif size == 1: | |
1063 | return '%s\n' % str(items[0]) |
|
1066 | return '%s\n' % str(items[0]) | |
1064 |
|
1067 | |||
1065 | # Try every row count from 1 upwards |
|
1068 | # Try every row count from 1 upwards | |
1066 | array_index = lambda nrows, row, col: nrows*col + row |
|
1069 | array_index = lambda nrows, row, col: nrows*col + row | |
1067 | for nrows in range(1, size): |
|
1070 | for nrows in range(1, size): | |
1068 | ncols = (size + nrows - 1) // nrows |
|
1071 | ncols = (size + nrows - 1) // nrows | |
1069 | colwidths = [] |
|
1072 | colwidths = [] | |
1070 | totwidth = -len(separator) |
|
1073 | totwidth = -len(separator) | |
1071 | for col in range(ncols): |
|
1074 | for col in range(ncols): | |
1072 | # Get max column width for this column |
|
1075 | # Get max column width for this column | |
1073 | colwidth = 0 |
|
1076 | colwidth = 0 | |
1074 | for row in range(nrows): |
|
1077 | for row in range(nrows): | |
1075 | i = array_index(nrows, row, col) |
|
1078 | i = array_index(nrows, row, col) | |
1076 | if i >= size: break |
|
1079 | if i >= size: break | |
1077 | x = items[i] |
|
1080 | x = items[i] | |
1078 | colwidth = max(colwidth, len(x)) |
|
1081 | colwidth = max(colwidth, len(x)) | |
1079 | colwidths.append(colwidth) |
|
1082 | colwidths.append(colwidth) | |
1080 | totwidth += colwidth + len(separator) |
|
1083 | totwidth += colwidth + len(separator) | |
1081 | if totwidth > displaywidth: |
|
1084 | if totwidth > displaywidth: | |
1082 | break |
|
1085 | break | |
1083 | if totwidth <= displaywidth: |
|
1086 | if totwidth <= displaywidth: | |
1084 | break |
|
1087 | break | |
1085 |
|
1088 | |||
1086 | # The smallest number of rows computed and the max widths for each |
|
1089 | # The smallest number of rows computed and the max widths for each | |
1087 | # column has been obtained. Now we just have to format each of the rows. |
|
1090 | # column has been obtained. Now we just have to format each of the rows. | |
1088 | string = '' |
|
1091 | string = '' | |
1089 | for row in range(nrows): |
|
1092 | for row in range(nrows): | |
1090 | texts = [] |
|
1093 | texts = [] | |
1091 | for col in range(ncols): |
|
1094 | for col in range(ncols): | |
1092 | i = row + nrows*col |
|
1095 | i = row + nrows*col | |
1093 | if i >= size: |
|
1096 | if i >= size: | |
1094 | texts.append('') |
|
1097 | texts.append('') | |
1095 | else: |
|
1098 | else: | |
1096 | texts.append(items[i]) |
|
1099 | texts.append(items[i]) | |
1097 | while texts and not texts[-1]: |
|
1100 | while texts and not texts[-1]: | |
1098 | del texts[-1] |
|
1101 | del texts[-1] | |
1099 | for col in range(len(texts)): |
|
1102 | for col in range(len(texts)): | |
1100 | texts[col] = texts[col].ljust(colwidths[col]) |
|
1103 | texts[col] = texts[col].ljust(colwidths[col]) | |
1101 | string += '%s\n' % str(separator.join(texts)) |
|
1104 | string += '%s\n' % str(separator.join(texts)) | |
1102 | return string |
|
1105 | return string | |
1103 |
|
1106 | |||
1104 | def _get_block_plain_text(self, block): |
|
1107 | def _get_block_plain_text(self, block): | |
1105 | """ Given a QTextBlock, return its unformatted text. |
|
1108 | """ Given a QTextBlock, return its unformatted text. | |
1106 | """ |
|
1109 | """ | |
1107 | cursor = QtGui.QTextCursor(block) |
|
1110 | cursor = QtGui.QTextCursor(block) | |
1108 | cursor.movePosition(QtGui.QTextCursor.StartOfBlock) |
|
1111 | cursor.movePosition(QtGui.QTextCursor.StartOfBlock) | |
1109 | cursor.movePosition(QtGui.QTextCursor.EndOfBlock, |
|
1112 | cursor.movePosition(QtGui.QTextCursor.EndOfBlock, | |
1110 | QtGui.QTextCursor.KeepAnchor) |
|
1113 | QtGui.QTextCursor.KeepAnchor) | |
1111 | return str(cursor.selection().toPlainText()) |
|
1114 | return str(cursor.selection().toPlainText()) | |
1112 |
|
1115 | |||
1113 | def _get_cursor(self): |
|
1116 | def _get_cursor(self): | |
1114 | """ Convenience method that returns a cursor for the current position. |
|
1117 | """ Convenience method that returns a cursor for the current position. | |
1115 | """ |
|
1118 | """ | |
1116 | return self._control.textCursor() |
|
1119 | return self._control.textCursor() | |
1117 |
|
1120 | |||
1118 | def _get_end_cursor(self): |
|
1121 | def _get_end_cursor(self): | |
1119 | """ Convenience method that returns a cursor for the last character. |
|
1122 | """ Convenience method that returns a cursor for the last character. | |
1120 | """ |
|
1123 | """ | |
1121 | cursor = self._control.textCursor() |
|
1124 | cursor = self._control.textCursor() | |
1122 | cursor.movePosition(QtGui.QTextCursor.End) |
|
1125 | cursor.movePosition(QtGui.QTextCursor.End) | |
1123 | return cursor |
|
1126 | return cursor | |
1124 |
|
1127 | |||
1125 | def _get_input_buffer_cursor_column(self): |
|
1128 | def _get_input_buffer_cursor_column(self): | |
1126 | """ Returns the column of the cursor in the input buffer, excluding the |
|
1129 | """ Returns the column of the cursor in the input buffer, excluding the | |
1127 | contribution by the prompt, or -1 if there is no such column. |
|
1130 | contribution by the prompt, or -1 if there is no such column. | |
1128 | """ |
|
1131 | """ | |
1129 | prompt = self._get_input_buffer_cursor_prompt() |
|
1132 | prompt = self._get_input_buffer_cursor_prompt() | |
1130 | if prompt is None: |
|
1133 | if prompt is None: | |
1131 | return -1 |
|
1134 | return -1 | |
1132 | else: |
|
1135 | else: | |
1133 | cursor = self._control.textCursor() |
|
1136 | cursor = self._control.textCursor() | |
1134 | return cursor.columnNumber() - len(prompt) |
|
1137 | return cursor.columnNumber() - len(prompt) | |
1135 |
|
1138 | |||
1136 | def _get_input_buffer_cursor_line(self): |
|
1139 | def _get_input_buffer_cursor_line(self): | |
1137 | """ Returns line of the input buffer that contains the cursor, or None |
|
1140 | """ Returns line of the input buffer that contains the cursor, or None | |
1138 | if there is no such line. |
|
1141 | if there is no such line. | |
1139 | """ |
|
1142 | """ | |
1140 | prompt = self._get_input_buffer_cursor_prompt() |
|
1143 | prompt = self._get_input_buffer_cursor_prompt() | |
1141 | if prompt is None: |
|
1144 | if prompt is None: | |
1142 | return None |
|
1145 | return None | |
1143 | else: |
|
1146 | else: | |
1144 | cursor = self._control.textCursor() |
|
1147 | cursor = self._control.textCursor() | |
1145 | text = self._get_block_plain_text(cursor.block()) |
|
1148 | text = self._get_block_plain_text(cursor.block()) | |
1146 | return text[len(prompt):] |
|
1149 | return text[len(prompt):] | |
1147 |
|
1150 | |||
1148 | def _get_input_buffer_cursor_prompt(self): |
|
1151 | def _get_input_buffer_cursor_prompt(self): | |
1149 | """ Returns the (plain text) prompt for line of the input buffer that |
|
1152 | """ Returns the (plain text) prompt for line of the input buffer that | |
1150 | contains the cursor, or None if there is no such line. |
|
1153 | contains the cursor, or None if there is no such line. | |
1151 | """ |
|
1154 | """ | |
1152 | if self._executing: |
|
1155 | if self._executing: | |
1153 | return None |
|
1156 | return None | |
1154 | cursor = self._control.textCursor() |
|
1157 | cursor = self._control.textCursor() | |
1155 | if cursor.position() >= self._prompt_pos: |
|
1158 | if cursor.position() >= self._prompt_pos: | |
1156 | if cursor.blockNumber() == self._get_prompt_cursor().blockNumber(): |
|
1159 | if cursor.blockNumber() == self._get_prompt_cursor().blockNumber(): | |
1157 | return self._prompt |
|
1160 | return self._prompt | |
1158 | else: |
|
1161 | else: | |
1159 | return self._continuation_prompt |
|
1162 | return self._continuation_prompt | |
1160 | else: |
|
1163 | else: | |
1161 | return None |
|
1164 | return None | |
1162 |
|
1165 | |||
1163 | def _get_prompt_cursor(self): |
|
1166 | def _get_prompt_cursor(self): | |
1164 | """ Convenience method that returns a cursor for the prompt position. |
|
1167 | """ Convenience method that returns a cursor for the prompt position. | |
1165 | """ |
|
1168 | """ | |
1166 | cursor = self._control.textCursor() |
|
1169 | cursor = self._control.textCursor() | |
1167 | cursor.setPosition(self._prompt_pos) |
|
1170 | cursor.setPosition(self._prompt_pos) | |
1168 | return cursor |
|
1171 | return cursor | |
1169 |
|
1172 | |||
1170 | def _get_selection_cursor(self, start, end): |
|
1173 | def _get_selection_cursor(self, start, end): | |
1171 | """ Convenience method that returns a cursor with text selected between |
|
1174 | """ Convenience method that returns a cursor with text selected between | |
1172 | the positions 'start' and 'end'. |
|
1175 | the positions 'start' and 'end'. | |
1173 | """ |
|
1176 | """ | |
1174 | cursor = self._control.textCursor() |
|
1177 | cursor = self._control.textCursor() | |
1175 | cursor.setPosition(start) |
|
1178 | cursor.setPosition(start) | |
1176 | cursor.setPosition(end, QtGui.QTextCursor.KeepAnchor) |
|
1179 | cursor.setPosition(end, QtGui.QTextCursor.KeepAnchor) | |
1177 | return cursor |
|
1180 | return cursor | |
1178 |
|
1181 | |||
1179 | def _get_word_start_cursor(self, position): |
|
1182 | def _get_word_start_cursor(self, position): | |
1180 | """ Find the start of the word to the left the given position. If a |
|
1183 | """ Find the start of the word to the left the given position. If a | |
1181 | sequence of non-word characters precedes the first word, skip over |
|
1184 | sequence of non-word characters precedes the first word, skip over | |
1182 | them. (This emulates the behavior of bash, emacs, etc.) |
|
1185 | them. (This emulates the behavior of bash, emacs, etc.) | |
1183 | """ |
|
1186 | """ | |
1184 | document = self._control.document() |
|
1187 | document = self._control.document() | |
1185 | position -= 1 |
|
1188 | position -= 1 | |
1186 | while position >= self._prompt_pos and \ |
|
1189 | while position >= self._prompt_pos and \ | |
1187 | not document.characterAt(position).isLetterOrNumber(): |
|
1190 | not document.characterAt(position).isLetterOrNumber(): | |
1188 | position -= 1 |
|
1191 | position -= 1 | |
1189 | while position >= self._prompt_pos and \ |
|
1192 | while position >= self._prompt_pos and \ | |
1190 | document.characterAt(position).isLetterOrNumber(): |
|
1193 | document.characterAt(position).isLetterOrNumber(): | |
1191 | position -= 1 |
|
1194 | position -= 1 | |
1192 | cursor = self._control.textCursor() |
|
1195 | cursor = self._control.textCursor() | |
1193 | cursor.setPosition(position + 1) |
|
1196 | cursor.setPosition(position + 1) | |
1194 | return cursor |
|
1197 | return cursor | |
1195 |
|
1198 | |||
1196 | def _get_word_end_cursor(self, position): |
|
1199 | def _get_word_end_cursor(self, position): | |
1197 | """ Find the end of the word to the right the given position. If a |
|
1200 | """ Find the end of the word to the right the given position. If a | |
1198 | sequence of non-word characters precedes the first word, skip over |
|
1201 | sequence of non-word characters precedes the first word, skip over | |
1199 | them. (This emulates the behavior of bash, emacs, etc.) |
|
1202 | them. (This emulates the behavior of bash, emacs, etc.) | |
1200 | """ |
|
1203 | """ | |
1201 | document = self._control.document() |
|
1204 | document = self._control.document() | |
1202 | end = self._get_end_cursor().position() |
|
1205 | end = self._get_end_cursor().position() | |
1203 | while position < end and \ |
|
1206 | while position < end and \ | |
1204 | not document.characterAt(position).isLetterOrNumber(): |
|
1207 | not document.characterAt(position).isLetterOrNumber(): | |
1205 | position += 1 |
|
1208 | position += 1 | |
1206 | while position < end and \ |
|
1209 | while position < end and \ | |
1207 | document.characterAt(position).isLetterOrNumber(): |
|
1210 | document.characterAt(position).isLetterOrNumber(): | |
1208 | position += 1 |
|
1211 | position += 1 | |
1209 | cursor = self._control.textCursor() |
|
1212 | cursor = self._control.textCursor() | |
1210 | cursor.setPosition(position) |
|
1213 | cursor.setPosition(position) | |
1211 | return cursor |
|
1214 | return cursor | |
1212 |
|
1215 | |||
1213 | def _insert_continuation_prompt(self, cursor): |
|
1216 | def _insert_continuation_prompt(self, cursor): | |
1214 | """ Inserts new continuation prompt using the specified cursor. |
|
1217 | """ Inserts new continuation prompt using the specified cursor. | |
1215 | """ |
|
1218 | """ | |
1216 | if self._continuation_prompt_html is None: |
|
1219 | if self._continuation_prompt_html is None: | |
1217 | self._insert_plain_text(cursor, self._continuation_prompt) |
|
1220 | self._insert_plain_text(cursor, self._continuation_prompt) | |
1218 | else: |
|
1221 | else: | |
1219 | self._continuation_prompt = self._insert_html_fetching_plain_text( |
|
1222 | self._continuation_prompt = self._insert_html_fetching_plain_text( | |
1220 | cursor, self._continuation_prompt_html) |
|
1223 | cursor, self._continuation_prompt_html) | |
1221 |
|
1224 | |||
1222 | def _insert_html(self, cursor, html): |
|
1225 | def _insert_html(self, cursor, html): | |
1223 | """ Inserts HTML using the specified cursor in such a way that future |
|
1226 | """ Inserts HTML using the specified cursor in such a way that future | |
1224 | formatting is unaffected. |
|
1227 | formatting is unaffected. | |
1225 | """ |
|
1228 | """ | |
1226 | cursor.beginEditBlock() |
|
1229 | cursor.beginEditBlock() | |
1227 | cursor.insertHtml(html) |
|
1230 | cursor.insertHtml(html) | |
1228 |
|
1231 | |||
1229 | # After inserting HTML, the text document "remembers" it's in "html |
|
1232 | # After inserting HTML, the text document "remembers" it's in "html | |
1230 | # mode", which means that subsequent calls adding plain text will result |
|
1233 | # mode", which means that subsequent calls adding plain text will result | |
1231 | # in unwanted formatting, lost tab characters, etc. The following code |
|
1234 | # in unwanted formatting, lost tab characters, etc. The following code | |
1232 | # hacks around this behavior, which I consider to be a bug in Qt, by |
|
1235 | # hacks around this behavior, which I consider to be a bug in Qt, by | |
1233 | # (crudely) resetting the document's style state. |
|
1236 | # (crudely) resetting the document's style state. | |
1234 | cursor.movePosition(QtGui.QTextCursor.Left, |
|
1237 | cursor.movePosition(QtGui.QTextCursor.Left, | |
1235 | QtGui.QTextCursor.KeepAnchor) |
|
1238 | QtGui.QTextCursor.KeepAnchor) | |
1236 | if cursor.selection().toPlainText() == ' ': |
|
1239 | if cursor.selection().toPlainText() == ' ': | |
1237 | cursor.removeSelectedText() |
|
1240 | cursor.removeSelectedText() | |
1238 | else: |
|
1241 | else: | |
1239 | cursor.movePosition(QtGui.QTextCursor.Right) |
|
1242 | cursor.movePosition(QtGui.QTextCursor.Right) | |
1240 | cursor.insertText(' ', QtGui.QTextCharFormat()) |
|
1243 | cursor.insertText(' ', QtGui.QTextCharFormat()) | |
1241 | cursor.endEditBlock() |
|
1244 | cursor.endEditBlock() | |
1242 |
|
1245 | |||
1243 | def _insert_html_fetching_plain_text(self, cursor, html): |
|
1246 | def _insert_html_fetching_plain_text(self, cursor, html): | |
1244 | """ Inserts HTML using the specified cursor, then returns its plain text |
|
1247 | """ Inserts HTML using the specified cursor, then returns its plain text | |
1245 | version. |
|
1248 | version. | |
1246 | """ |
|
1249 | """ | |
1247 | cursor.beginEditBlock() |
|
1250 | cursor.beginEditBlock() | |
1248 | cursor.removeSelectedText() |
|
1251 | cursor.removeSelectedText() | |
1249 |
|
1252 | |||
1250 | start = cursor.position() |
|
1253 | start = cursor.position() | |
1251 | self._insert_html(cursor, html) |
|
1254 | self._insert_html(cursor, html) | |
1252 | end = cursor.position() |
|
1255 | end = cursor.position() | |
1253 | cursor.setPosition(start, QtGui.QTextCursor.KeepAnchor) |
|
1256 | cursor.setPosition(start, QtGui.QTextCursor.KeepAnchor) | |
1254 | text = str(cursor.selection().toPlainText()) |
|
1257 | text = str(cursor.selection().toPlainText()) | |
1255 |
|
1258 | |||
1256 | cursor.setPosition(end) |
|
1259 | cursor.setPosition(end) | |
1257 | cursor.endEditBlock() |
|
1260 | cursor.endEditBlock() | |
1258 | return text |
|
1261 | return text | |
1259 |
|
1262 | |||
1260 | def _insert_plain_text(self, cursor, text): |
|
1263 | def _insert_plain_text(self, cursor, text): | |
1261 | """ Inserts plain text using the specified cursor, processing ANSI codes |
|
1264 | """ Inserts plain text using the specified cursor, processing ANSI codes | |
1262 | if enabled. |
|
1265 | if enabled. | |
1263 | """ |
|
1266 | """ | |
1264 | cursor.beginEditBlock() |
|
1267 | cursor.beginEditBlock() | |
1265 | if self.ansi_codes: |
|
1268 | if self.ansi_codes: | |
1266 | for substring in self._ansi_processor.split_string(text): |
|
1269 | for substring in self._ansi_processor.split_string(text): | |
1267 | for act in self._ansi_processor.actions: |
|
1270 | for act in self._ansi_processor.actions: | |
1268 |
|
1271 | |||
1269 | # Unlike real terminal emulators, we don't distinguish |
|
1272 | # Unlike real terminal emulators, we don't distinguish | |
1270 | # between the screen and the scrollback buffer. A screen |
|
1273 | # between the screen and the scrollback buffer. A screen | |
1271 | # erase request clears everything. |
|
1274 | # erase request clears everything. | |
1272 | if act.action == 'erase' and act.area == 'screen': |
|
1275 | if act.action == 'erase' and act.area == 'screen': | |
1273 | cursor.select(QtGui.QTextCursor.Document) |
|
1276 | cursor.select(QtGui.QTextCursor.Document) | |
1274 | cursor.removeSelectedText() |
|
1277 | cursor.removeSelectedText() | |
1275 |
|
1278 | |||
1276 | # Simulate a form feed by scrolling just past the last line. |
|
1279 | # Simulate a form feed by scrolling just past the last line. | |
1277 | elif act.action == 'scroll' and act.unit == 'page': |
|
1280 | elif act.action == 'scroll' and act.unit == 'page': | |
1278 | cursor.insertText('\n') |
|
1281 | cursor.insertText('\n') | |
1279 | cursor.endEditBlock() |
|
1282 | cursor.endEditBlock() | |
1280 | self._set_top_cursor(cursor) |
|
1283 | self._set_top_cursor(cursor) | |
1281 | cursor.joinPreviousEditBlock() |
|
1284 | cursor.joinPreviousEditBlock() | |
1282 | cursor.deletePreviousChar() |
|
1285 | cursor.deletePreviousChar() | |
1283 |
|
1286 | |||
1284 | format = self._ansi_processor.get_format() |
|
1287 | format = self._ansi_processor.get_format() | |
1285 | cursor.insertText(substring, format) |
|
1288 | cursor.insertText(substring, format) | |
1286 | else: |
|
1289 | else: | |
1287 | cursor.insertText(text) |
|
1290 | cursor.insertText(text) | |
1288 | cursor.endEditBlock() |
|
1291 | cursor.endEditBlock() | |
1289 |
|
1292 | |||
1290 | def _insert_plain_text_into_buffer(self, text): |
|
1293 | def _insert_plain_text_into_buffer(self, text): | |
1291 | """ Inserts text into the input buffer at the current cursor position, |
|
1294 | """ Inserts text into the input buffer at the current cursor position, | |
1292 | ensuring that continuation prompts are inserted as necessary. |
|
1295 | ensuring that continuation prompts are inserted as necessary. | |
1293 | """ |
|
1296 | """ | |
1294 | lines = str(text).splitlines(True) |
|
1297 | lines = str(text).splitlines(True) | |
1295 | if lines: |
|
1298 | if lines: | |
1296 | self._keep_cursor_in_buffer() |
|
1299 | self._keep_cursor_in_buffer() | |
1297 | cursor = self._control.textCursor() |
|
1300 | cursor = self._control.textCursor() | |
1298 | cursor.beginEditBlock() |
|
1301 | cursor.beginEditBlock() | |
1299 | cursor.insertText(lines[0]) |
|
1302 | cursor.insertText(lines[0]) | |
1300 | for line in lines[1:]: |
|
1303 | for line in lines[1:]: | |
1301 | if self._continuation_prompt_html is None: |
|
1304 | if self._continuation_prompt_html is None: | |
1302 | cursor.insertText(self._continuation_prompt) |
|
1305 | cursor.insertText(self._continuation_prompt) | |
1303 | else: |
|
1306 | else: | |
1304 | self._continuation_prompt = \ |
|
1307 | self._continuation_prompt = \ | |
1305 | self._insert_html_fetching_plain_text( |
|
1308 | self._insert_html_fetching_plain_text( | |
1306 | cursor, self._continuation_prompt_html) |
|
1309 | cursor, self._continuation_prompt_html) | |
1307 | cursor.insertText(line) |
|
1310 | cursor.insertText(line) | |
1308 | cursor.endEditBlock() |
|
1311 | cursor.endEditBlock() | |
1309 | self._control.setTextCursor(cursor) |
|
1312 | self._control.setTextCursor(cursor) | |
1310 |
|
1313 | |||
1311 | def _in_buffer(self, position=None): |
|
1314 | def _in_buffer(self, position=None): | |
1312 | """ Returns whether the current cursor (or, if specified, a position) is |
|
1315 | """ Returns whether the current cursor (or, if specified, a position) is | |
1313 | inside the editing region. |
|
1316 | inside the editing region. | |
1314 | """ |
|
1317 | """ | |
1315 | cursor = self._control.textCursor() |
|
1318 | cursor = self._control.textCursor() | |
1316 | if position is None: |
|
1319 | if position is None: | |
1317 | position = cursor.position() |
|
1320 | position = cursor.position() | |
1318 | else: |
|
1321 | else: | |
1319 | cursor.setPosition(position) |
|
1322 | cursor.setPosition(position) | |
1320 | line = cursor.blockNumber() |
|
1323 | line = cursor.blockNumber() | |
1321 | prompt_line = self._get_prompt_cursor().blockNumber() |
|
1324 | prompt_line = self._get_prompt_cursor().blockNumber() | |
1322 | if line == prompt_line: |
|
1325 | if line == prompt_line: | |
1323 | return position >= self._prompt_pos |
|
1326 | return position >= self._prompt_pos | |
1324 | elif line > prompt_line: |
|
1327 | elif line > prompt_line: | |
1325 | cursor.movePosition(QtGui.QTextCursor.StartOfBlock) |
|
1328 | cursor.movePosition(QtGui.QTextCursor.StartOfBlock) | |
1326 | prompt_pos = cursor.position() + len(self._continuation_prompt) |
|
1329 | prompt_pos = cursor.position() + len(self._continuation_prompt) | |
1327 | return position >= prompt_pos |
|
1330 | return position >= prompt_pos | |
1328 | return False |
|
1331 | return False | |
1329 |
|
1332 | |||
1330 | def _keep_cursor_in_buffer(self): |
|
1333 | def _keep_cursor_in_buffer(self): | |
1331 | """ Ensures that the cursor is inside the editing region. Returns |
|
1334 | """ Ensures that the cursor is inside the editing region. Returns | |
1332 | whether the cursor was moved. |
|
1335 | whether the cursor was moved. | |
1333 | """ |
|
1336 | """ | |
1334 | moved = not self._in_buffer() |
|
1337 | moved = not self._in_buffer() | |
1335 | if moved: |
|
1338 | if moved: | |
1336 | cursor = self._control.textCursor() |
|
1339 | cursor = self._control.textCursor() | |
1337 | cursor.movePosition(QtGui.QTextCursor.End) |
|
1340 | cursor.movePosition(QtGui.QTextCursor.End) | |
1338 | self._control.setTextCursor(cursor) |
|
1341 | self._control.setTextCursor(cursor) | |
1339 | return moved |
|
1342 | return moved | |
1340 |
|
1343 | |||
1341 | def _keyboard_quit(self): |
|
1344 | def _keyboard_quit(self): | |
1342 | """ Cancels the current editing task ala Ctrl-G in Emacs. |
|
1345 | """ Cancels the current editing task ala Ctrl-G in Emacs. | |
1343 | """ |
|
1346 | """ | |
1344 | if self._text_completing_pos: |
|
1347 | if self._text_completing_pos: | |
1345 | self._cancel_text_completion() |
|
1348 | self._cancel_text_completion() | |
1346 | else: |
|
1349 | else: | |
1347 | self.input_buffer = '' |
|
1350 | self.input_buffer = '' | |
1348 |
|
1351 | |||
1349 | def _page(self, text): |
|
1352 | def _page(self, text, html=False): | |
1350 | """ Displays text using the pager if it exceeds the height of the |
|
1353 | """ Displays text using the pager if it exceeds the height of the viewport. | |
1351 | visible area. |
|
1354 | ||
|
1355 | Parameters: | |||
|
1356 | ----------- | |||
|
1357 | html : bool, optional (default False) | |||
|
1358 | If set, the text will be interpreted as HTML instead of plain text. | |||
1352 | """ |
|
1359 | """ | |
1353 | if self.paging == 'none': |
|
1360 | line_height = QtGui.QFontMetrics(self.font).height() | |
1354 | self._append_plain_text(text) |
|
1361 | minlines = self._control.viewport().height() / line_height | |
1355 | else: |
|
1362 | if self.paging != 'none' and re.match("(?:[^\n]*\n){%i}" % minlines, text): | |
1356 | line_height = QtGui.QFontMetrics(self.font).height() |
|
1363 | if self.paging == 'custom': | |
1357 | minlines = self._control.viewport().height() / line_height |
|
1364 | self.custom_page_requested.emit(text) | |
1358 | if re.match("(?:[^\n]*\n){%i}" % minlines, text): |
|
1365 | else: | |
1359 |
|
|
1366 | self._page_control.clear() | |
1360 |
|
|
1367 | cursor = self._page_control.textCursor() | |
|
1368 | if html: | |||
|
1369 | self._insert_html(cursor, text) | |||
1361 | else: |
|
1370 | else: | |
1362 | self._page_control.clear() |
|
|||
1363 | cursor = self._page_control.textCursor() |
|
|||
1364 | self._insert_plain_text(cursor, text) |
|
1371 | self._insert_plain_text(cursor, text) | |
1365 |
|
|
1372 | self._page_control.moveCursor(QtGui.QTextCursor.Start) | |
1366 |
|
1373 | |||
1367 |
|
|
1374 | self._page_control.viewport().resize(self._control.size()) | |
1368 |
|
|
1375 | if self._splitter: | |
1369 |
|
|
1376 | self._page_control.show() | |
1370 |
|
|
1377 | self._page_control.setFocus() | |
1371 |
|
|
1378 | else: | |
1372 |
|
|
1379 | self.layout().setCurrentWidget(self._page_control) | |
1373 |
|
|
1380 | elif html: | |
1374 |
|
|
1381 | self._append_plain_html(text) | |
|
1382 | else: | |||
|
1383 | self._append_plain_text(text) | |||
1375 |
|
1384 | |||
1376 | def _prompt_finished(self): |
|
1385 | def _prompt_finished(self): | |
1377 | """ Called immediately after a prompt is finished, i.e. when some input |
|
1386 | """ Called immediately after a prompt is finished, i.e. when some input | |
1378 | will be processed and a new prompt displayed. |
|
1387 | will be processed and a new prompt displayed. | |
1379 | """ |
|
1388 | """ | |
1380 | # Flush all state from the input splitter so the next round of |
|
1389 | # Flush all state from the input splitter so the next round of | |
1381 | # reading input starts with a clean buffer. |
|
1390 | # reading input starts with a clean buffer. | |
1382 | self._input_splitter.reset() |
|
1391 | self._input_splitter.reset() | |
1383 |
|
1392 | |||
1384 | self._control.setReadOnly(True) |
|
1393 | self._control.setReadOnly(True) | |
1385 | self._prompt_finished_hook() |
|
1394 | self._prompt_finished_hook() | |
1386 |
|
1395 | |||
1387 | def _prompt_started(self): |
|
1396 | def _prompt_started(self): | |
1388 | """ Called immediately after a new prompt is displayed. |
|
1397 | """ Called immediately after a new prompt is displayed. | |
1389 | """ |
|
1398 | """ | |
1390 | # Temporarily disable the maximum block count to permit undo/redo and |
|
1399 | # Temporarily disable the maximum block count to permit undo/redo and | |
1391 | # to ensure that the prompt position does not change due to truncation. |
|
1400 | # to ensure that the prompt position does not change due to truncation. | |
1392 | self._control.document().setMaximumBlockCount(0) |
|
1401 | self._control.document().setMaximumBlockCount(0) | |
1393 | self._control.setUndoRedoEnabled(True) |
|
1402 | self._control.setUndoRedoEnabled(True) | |
1394 |
|
1403 | |||
1395 | self._control.setReadOnly(False) |
|
1404 | self._control.setReadOnly(False) | |
1396 | self._control.moveCursor(QtGui.QTextCursor.End) |
|
1405 | self._control.moveCursor(QtGui.QTextCursor.End) | |
1397 | self._executing = False |
|
1406 | self._executing = False | |
1398 | self._prompt_started_hook() |
|
1407 | self._prompt_started_hook() | |
1399 |
|
1408 | |||
1400 | def _readline(self, prompt='', callback=None): |
|
1409 | def _readline(self, prompt='', callback=None): | |
1401 | """ Reads one line of input from the user. |
|
1410 | """ Reads one line of input from the user. | |
1402 |
|
1411 | |||
1403 | Parameters |
|
1412 | Parameters | |
1404 | ---------- |
|
1413 | ---------- | |
1405 | prompt : str, optional |
|
1414 | prompt : str, optional | |
1406 | The prompt to print before reading the line. |
|
1415 | The prompt to print before reading the line. | |
1407 |
|
1416 | |||
1408 | callback : callable, optional |
|
1417 | callback : callable, optional | |
1409 | A callback to execute with the read line. If not specified, input is |
|
1418 | A callback to execute with the read line. If not specified, input is | |
1410 | read *synchronously* and this method does not return until it has |
|
1419 | read *synchronously* and this method does not return until it has | |
1411 | been read. |
|
1420 | been read. | |
1412 |
|
1421 | |||
1413 | Returns |
|
1422 | Returns | |
1414 | ------- |
|
1423 | ------- | |
1415 | If a callback is specified, returns nothing. Otherwise, returns the |
|
1424 | If a callback is specified, returns nothing. Otherwise, returns the | |
1416 | input string with the trailing newline stripped. |
|
1425 | input string with the trailing newline stripped. | |
1417 | """ |
|
1426 | """ | |
1418 | if self._reading: |
|
1427 | if self._reading: | |
1419 | raise RuntimeError('Cannot read a line. Widget is already reading.') |
|
1428 | raise RuntimeError('Cannot read a line. Widget is already reading.') | |
1420 |
|
1429 | |||
1421 | if not callback and not self.isVisible(): |
|
1430 | if not callback and not self.isVisible(): | |
1422 | # If the user cannot see the widget, this function cannot return. |
|
1431 | # If the user cannot see the widget, this function cannot return. | |
1423 | raise RuntimeError('Cannot synchronously read a line if the widget ' |
|
1432 | raise RuntimeError('Cannot synchronously read a line if the widget ' | |
1424 | 'is not visible!') |
|
1433 | 'is not visible!') | |
1425 |
|
1434 | |||
1426 | self._reading = True |
|
1435 | self._reading = True | |
1427 | self._show_prompt(prompt, newline=False) |
|
1436 | self._show_prompt(prompt, newline=False) | |
1428 |
|
1437 | |||
1429 | if callback is None: |
|
1438 | if callback is None: | |
1430 | self._reading_callback = None |
|
1439 | self._reading_callback = None | |
1431 | while self._reading: |
|
1440 | while self._reading: | |
1432 | QtCore.QCoreApplication.processEvents() |
|
1441 | QtCore.QCoreApplication.processEvents() | |
1433 | return self.input_buffer.rstrip('\n') |
|
1442 | return self.input_buffer.rstrip('\n') | |
1434 |
|
1443 | |||
1435 | else: |
|
1444 | else: | |
1436 | self._reading_callback = lambda: \ |
|
1445 | self._reading_callback = lambda: \ | |
1437 | callback(self.input_buffer.rstrip('\n')) |
|
1446 | callback(self.input_buffer.rstrip('\n')) | |
1438 |
|
1447 | |||
1439 | def _set_continuation_prompt(self, prompt, html=False): |
|
1448 | def _set_continuation_prompt(self, prompt, html=False): | |
1440 | """ Sets the continuation prompt. |
|
1449 | """ Sets the continuation prompt. | |
1441 |
|
1450 | |||
1442 | Parameters |
|
1451 | Parameters | |
1443 | ---------- |
|
1452 | ---------- | |
1444 | prompt : str |
|
1453 | prompt : str | |
1445 | The prompt to show when more input is needed. |
|
1454 | The prompt to show when more input is needed. | |
1446 |
|
1455 | |||
1447 | html : bool, optional (default False) |
|
1456 | html : bool, optional (default False) | |
1448 | If set, the prompt will be inserted as formatted HTML. Otherwise, |
|
1457 | If set, the prompt will be inserted as formatted HTML. Otherwise, | |
1449 | the prompt will be treated as plain text, though ANSI color codes |
|
1458 | the prompt will be treated as plain text, though ANSI color codes | |
1450 | will be handled. |
|
1459 | will be handled. | |
1451 | """ |
|
1460 | """ | |
1452 | if html: |
|
1461 | if html: | |
1453 | self._continuation_prompt_html = prompt |
|
1462 | self._continuation_prompt_html = prompt | |
1454 | else: |
|
1463 | else: | |
1455 | self._continuation_prompt = prompt |
|
1464 | self._continuation_prompt = prompt | |
1456 | self._continuation_prompt_html = None |
|
1465 | self._continuation_prompt_html = None | |
1457 |
|
1466 | |||
1458 | def _set_cursor(self, cursor): |
|
1467 | def _set_cursor(self, cursor): | |
1459 | """ Convenience method to set the current cursor. |
|
1468 | """ Convenience method to set the current cursor. | |
1460 | """ |
|
1469 | """ | |
1461 | self._control.setTextCursor(cursor) |
|
1470 | self._control.setTextCursor(cursor) | |
1462 |
|
1471 | |||
1463 | def _set_top_cursor(self, cursor): |
|
1472 | def _set_top_cursor(self, cursor): | |
1464 | """ Scrolls the viewport so that the specified cursor is at the top. |
|
1473 | """ Scrolls the viewport so that the specified cursor is at the top. | |
1465 | """ |
|
1474 | """ | |
1466 | scrollbar = self._control.verticalScrollBar() |
|
1475 | scrollbar = self._control.verticalScrollBar() | |
1467 | scrollbar.setValue(scrollbar.maximum()) |
|
1476 | scrollbar.setValue(scrollbar.maximum()) | |
1468 | original_cursor = self._control.textCursor() |
|
1477 | original_cursor = self._control.textCursor() | |
1469 | self._control.setTextCursor(cursor) |
|
1478 | self._control.setTextCursor(cursor) | |
1470 | self._control.ensureCursorVisible() |
|
1479 | self._control.ensureCursorVisible() | |
1471 | self._control.setTextCursor(original_cursor) |
|
1480 | self._control.setTextCursor(original_cursor) | |
1472 |
|
1481 | |||
1473 | def _show_prompt(self, prompt=None, html=False, newline=True): |
|
1482 | def _show_prompt(self, prompt=None, html=False, newline=True): | |
1474 | """ Writes a new prompt at the end of the buffer. |
|
1483 | """ Writes a new prompt at the end of the buffer. | |
1475 |
|
1484 | |||
1476 | Parameters |
|
1485 | Parameters | |
1477 | ---------- |
|
1486 | ---------- | |
1478 | prompt : str, optional |
|
1487 | prompt : str, optional | |
1479 | The prompt to show. If not specified, the previous prompt is used. |
|
1488 | The prompt to show. If not specified, the previous prompt is used. | |
1480 |
|
1489 | |||
1481 | html : bool, optional (default False) |
|
1490 | html : bool, optional (default False) | |
1482 | Only relevant when a prompt is specified. If set, the prompt will |
|
1491 | Only relevant when a prompt is specified. If set, the prompt will | |
1483 | be inserted as formatted HTML. Otherwise, the prompt will be treated |
|
1492 | be inserted as formatted HTML. Otherwise, the prompt will be treated | |
1484 | as plain text, though ANSI color codes will be handled. |
|
1493 | as plain text, though ANSI color codes will be handled. | |
1485 |
|
1494 | |||
1486 | newline : bool, optional (default True) |
|
1495 | newline : bool, optional (default True) | |
1487 | If set, a new line will be written before showing the prompt if |
|
1496 | If set, a new line will be written before showing the prompt if | |
1488 | there is not already a newline at the end of the buffer. |
|
1497 | there is not already a newline at the end of the buffer. | |
1489 | """ |
|
1498 | """ | |
1490 | # Insert a preliminary newline, if necessary. |
|
1499 | # Insert a preliminary newline, if necessary. | |
1491 | if newline: |
|
1500 | if newline: | |
1492 | cursor = self._get_end_cursor() |
|
1501 | cursor = self._get_end_cursor() | |
1493 | if cursor.position() > 0: |
|
1502 | if cursor.position() > 0: | |
1494 | cursor.movePosition(QtGui.QTextCursor.Left, |
|
1503 | cursor.movePosition(QtGui.QTextCursor.Left, | |
1495 | QtGui.QTextCursor.KeepAnchor) |
|
1504 | QtGui.QTextCursor.KeepAnchor) | |
1496 | if str(cursor.selection().toPlainText()) != '\n': |
|
1505 | if str(cursor.selection().toPlainText()) != '\n': | |
1497 | self._append_plain_text('\n') |
|
1506 | self._append_plain_text('\n') | |
1498 |
|
1507 | |||
1499 | # Write the prompt. |
|
1508 | # Write the prompt. | |
1500 | self._append_plain_text(self._prompt_sep) |
|
1509 | self._append_plain_text(self._prompt_sep) | |
1501 | if prompt is None: |
|
1510 | if prompt is None: | |
1502 | if self._prompt_html is None: |
|
1511 | if self._prompt_html is None: | |
1503 | self._append_plain_text(self._prompt) |
|
1512 | self._append_plain_text(self._prompt) | |
1504 | else: |
|
1513 | else: | |
1505 | self._append_html(self._prompt_html) |
|
1514 | self._append_html(self._prompt_html) | |
1506 | else: |
|
1515 | else: | |
1507 | if html: |
|
1516 | if html: | |
1508 | self._prompt = self._append_html_fetching_plain_text(prompt) |
|
1517 | self._prompt = self._append_html_fetching_plain_text(prompt) | |
1509 | self._prompt_html = prompt |
|
1518 | self._prompt_html = prompt | |
1510 | else: |
|
1519 | else: | |
1511 | self._append_plain_text(prompt) |
|
1520 | self._append_plain_text(prompt) | |
1512 | self._prompt = prompt |
|
1521 | self._prompt = prompt | |
1513 | self._prompt_html = None |
|
1522 | self._prompt_html = None | |
1514 |
|
1523 | |||
1515 | self._prompt_pos = self._get_end_cursor().position() |
|
1524 | self._prompt_pos = self._get_end_cursor().position() | |
1516 | self._prompt_started() |
|
1525 | self._prompt_started() | |
1517 |
|
1526 | |||
1518 | #------ Signal handlers ---------------------------------------------------- |
|
1527 | #------ Signal handlers ---------------------------------------------------- | |
1519 |
|
1528 | |||
1520 | def _adjust_scrollbars(self): |
|
1529 | def _adjust_scrollbars(self): | |
1521 | """ Expands the vertical scrollbar beyond the range set by Qt. |
|
1530 | """ Expands the vertical scrollbar beyond the range set by Qt. | |
1522 | """ |
|
1531 | """ | |
1523 | # This code is adapted from _q_adjustScrollbars in qplaintextedit.cpp |
|
1532 | # This code is adapted from _q_adjustScrollbars in qplaintextedit.cpp | |
1524 | # and qtextedit.cpp. |
|
1533 | # and qtextedit.cpp. | |
1525 | document = self._control.document() |
|
1534 | document = self._control.document() | |
1526 | scrollbar = self._control.verticalScrollBar() |
|
1535 | scrollbar = self._control.verticalScrollBar() | |
1527 | viewport_height = self._control.viewport().height() |
|
1536 | viewport_height = self._control.viewport().height() | |
1528 | if isinstance(self._control, QtGui.QPlainTextEdit): |
|
1537 | if isinstance(self._control, QtGui.QPlainTextEdit): | |
1529 | maximum = max(0, document.lineCount() - 1) |
|
1538 | maximum = max(0, document.lineCount() - 1) | |
1530 | step = viewport_height / self._control.fontMetrics().lineSpacing() |
|
1539 | step = viewport_height / self._control.fontMetrics().lineSpacing() | |
1531 | else: |
|
1540 | else: | |
1532 | # QTextEdit does not do line-based layout and blocks will not in |
|
1541 | # QTextEdit does not do line-based layout and blocks will not in | |
1533 | # general have the same height. Therefore it does not make sense to |
|
1542 | # general have the same height. Therefore it does not make sense to | |
1534 | # attempt to scroll in line height increments. |
|
1543 | # attempt to scroll in line height increments. | |
1535 | maximum = document.size().height() |
|
1544 | maximum = document.size().height() | |
1536 | step = viewport_height |
|
1545 | step = viewport_height | |
1537 | diff = maximum - scrollbar.maximum() |
|
1546 | diff = maximum - scrollbar.maximum() | |
1538 | scrollbar.setRange(0, maximum) |
|
1547 | scrollbar.setRange(0, maximum) | |
1539 | scrollbar.setPageStep(step) |
|
1548 | scrollbar.setPageStep(step) | |
1540 | # Compensate for undesirable scrolling that occurs automatically due to |
|
1549 | # Compensate for undesirable scrolling that occurs automatically due to | |
1541 | # maximumBlockCount() text truncation. |
|
1550 | # maximumBlockCount() text truncation. | |
1542 | if diff < 0: |
|
1551 | if diff < 0: | |
1543 | scrollbar.setValue(scrollbar.value() + diff) |
|
1552 | scrollbar.setValue(scrollbar.value() + diff) | |
1544 |
|
1553 | |||
1545 | def _cursor_position_changed(self): |
|
1554 | def _cursor_position_changed(self): | |
1546 | """ Clears the temporary buffer based on the cursor position. |
|
1555 | """ Clears the temporary buffer based on the cursor position. | |
1547 | """ |
|
1556 | """ | |
1548 | if self._text_completing_pos: |
|
1557 | if self._text_completing_pos: | |
1549 | document = self._control.document() |
|
1558 | document = self._control.document() | |
1550 | if self._text_completing_pos < document.characterCount(): |
|
1559 | if self._text_completing_pos < document.characterCount(): | |
1551 | cursor = self._control.textCursor() |
|
1560 | cursor = self._control.textCursor() | |
1552 | pos = cursor.position() |
|
1561 | pos = cursor.position() | |
1553 | text_cursor = self._control.textCursor() |
|
1562 | text_cursor = self._control.textCursor() | |
1554 | text_cursor.setPosition(self._text_completing_pos) |
|
1563 | text_cursor.setPosition(self._text_completing_pos) | |
1555 | if pos < self._text_completing_pos or \ |
|
1564 | if pos < self._text_completing_pos or \ | |
1556 | cursor.blockNumber() > text_cursor.blockNumber(): |
|
1565 | cursor.blockNumber() > text_cursor.blockNumber(): | |
1557 | self._clear_temporary_buffer() |
|
1566 | self._clear_temporary_buffer() | |
1558 | self._text_completing_pos = 0 |
|
1567 | self._text_completing_pos = 0 | |
1559 | else: |
|
1568 | else: | |
1560 | self._clear_temporary_buffer() |
|
1569 | self._clear_temporary_buffer() | |
1561 | self._text_completing_pos = 0 |
|
1570 | self._text_completing_pos = 0 | |
1562 |
|
1571 | |||
1563 | def _custom_context_menu_requested(self, pos): |
|
1572 | def _custom_context_menu_requested(self, pos): | |
1564 | """ Shows a context menu at the given QPoint (in widget coordinates). |
|
1573 | """ Shows a context menu at the given QPoint (in widget coordinates). | |
1565 | """ |
|
1574 | """ | |
1566 | menu = self._context_menu_make(pos) |
|
1575 | menu = self._context_menu_make(pos) | |
1567 | menu.exec_(self._control.mapToGlobal(pos)) |
|
1576 | menu.exec_(self._control.mapToGlobal(pos)) |
@@ -1,455 +1,461 b'' | |||||
1 | """ A FrontendWidget that emulates the interface of the console IPython and |
|
1 | """ A FrontendWidget that emulates the interface of the console IPython and | |
2 | supports the additional functionality provided by the IPython kernel. |
|
2 | supports the additional functionality provided by the IPython kernel. | |
3 |
|
3 | |||
4 | TODO: Add support for retrieving the system default editor. Requires code |
|
4 | TODO: Add support for retrieving the system default editor. Requires code | |
5 | paths for Windows (use the registry), Mac OS (use LaunchServices), and |
|
5 | paths for Windows (use the registry), Mac OS (use LaunchServices), and | |
6 | Linux (use the xdg system). |
|
6 | Linux (use the xdg system). | |
7 | """ |
|
7 | """ | |
8 |
|
8 | |||
9 | #----------------------------------------------------------------------------- |
|
9 | #----------------------------------------------------------------------------- | |
10 | # Imports |
|
10 | # Imports | |
11 | #----------------------------------------------------------------------------- |
|
11 | #----------------------------------------------------------------------------- | |
12 |
|
12 | |||
13 | # Standard library imports |
|
13 | # Standard library imports | |
14 | from collections import namedtuple |
|
14 | from collections import namedtuple | |
15 | import re |
|
15 | import re | |
16 | from subprocess import Popen |
|
16 | from subprocess import Popen | |
17 |
|
17 | |||
18 | # System library imports |
|
18 | # System library imports | |
19 | from PyQt4 import QtCore, QtGui |
|
19 | from PyQt4 import QtCore, QtGui | |
20 |
|
20 | |||
21 | # Local imports |
|
21 | # Local imports | |
22 | from IPython.core.inputsplitter import IPythonInputSplitter, \ |
|
22 | from IPython.core.inputsplitter import IPythonInputSplitter, \ | |
23 | transform_ipy_prompt |
|
23 | transform_ipy_prompt | |
24 | from IPython.core.usage import default_gui_banner |
|
24 | from IPython.core.usage import default_gui_banner | |
25 | from IPython.utils.traitlets import Bool, Str |
|
25 | from IPython.utils.traitlets import Bool, Str | |
26 | from frontend_widget import FrontendWidget |
|
26 | from frontend_widget import FrontendWidget | |
27 |
|
27 | |||
28 | #----------------------------------------------------------------------------- |
|
28 | #----------------------------------------------------------------------------- | |
29 | # Constants |
|
29 | # Constants | |
30 | #----------------------------------------------------------------------------- |
|
30 | #----------------------------------------------------------------------------- | |
31 |
|
31 | |||
32 | # The default light style sheet: black text on a white background. |
|
32 | # The default light style sheet: black text on a white background. | |
33 | default_light_style_sheet = ''' |
|
33 | default_light_style_sheet = ''' | |
34 | .error { color: red; } |
|
34 | .error { color: red; } | |
35 | .in-prompt { color: navy; } |
|
35 | .in-prompt { color: navy; } | |
36 | .in-prompt-number { font-weight: bold; } |
|
36 | .in-prompt-number { font-weight: bold; } | |
37 | .out-prompt { color: darkred; } |
|
37 | .out-prompt { color: darkred; } | |
38 | .out-prompt-number { font-weight: bold; } |
|
38 | .out-prompt-number { font-weight: bold; } | |
39 | ''' |
|
39 | ''' | |
40 | default_light_syntax_style = 'default' |
|
40 | default_light_syntax_style = 'default' | |
41 |
|
41 | |||
42 | # The default dark style sheet: white text on a black background. |
|
42 | # The default dark style sheet: white text on a black background. | |
43 | default_dark_style_sheet = ''' |
|
43 | default_dark_style_sheet = ''' | |
44 | QPlainTextEdit, QTextEdit { background-color: black; color: white } |
|
44 | QPlainTextEdit, QTextEdit { background-color: black; color: white } | |
45 | QFrame { border: 1px solid grey; } |
|
45 | QFrame { border: 1px solid grey; } | |
46 | .error { color: red; } |
|
46 | .error { color: red; } | |
47 | .in-prompt { color: lime; } |
|
47 | .in-prompt { color: lime; } | |
48 | .in-prompt-number { color: lime; font-weight: bold; } |
|
48 | .in-prompt-number { color: lime; font-weight: bold; } | |
49 | .out-prompt { color: red; } |
|
49 | .out-prompt { color: red; } | |
50 | .out-prompt-number { color: red; font-weight: bold; } |
|
50 | .out-prompt-number { color: red; font-weight: bold; } | |
51 | ''' |
|
51 | ''' | |
52 | default_dark_syntax_style = 'monokai' |
|
52 | default_dark_syntax_style = 'monokai' | |
53 |
|
53 | |||
54 | # Default strings to build and display input and output prompts (and separators |
|
54 | # Default strings to build and display input and output prompts (and separators | |
55 | # in between) |
|
55 | # in between) | |
56 | default_in_prompt = 'In [<span class="in-prompt-number">%i</span>]: ' |
|
56 | default_in_prompt = 'In [<span class="in-prompt-number">%i</span>]: ' | |
57 | default_out_prompt = 'Out[<span class="out-prompt-number">%i</span>]: ' |
|
57 | default_out_prompt = 'Out[<span class="out-prompt-number">%i</span>]: ' | |
58 | default_input_sep = '\n' |
|
58 | default_input_sep = '\n' | |
59 | default_output_sep = '' |
|
59 | default_output_sep = '' | |
60 | default_output_sep2 = '' |
|
60 | default_output_sep2 = '' | |
61 |
|
61 | |||
62 | #----------------------------------------------------------------------------- |
|
62 | #----------------------------------------------------------------------------- | |
63 | # IPythonWidget class |
|
63 | # IPythonWidget class | |
64 | #----------------------------------------------------------------------------- |
|
64 | #----------------------------------------------------------------------------- | |
65 |
|
65 | |||
66 | class IPythonWidget(FrontendWidget): |
|
66 | class IPythonWidget(FrontendWidget): | |
67 | """ A FrontendWidget for an IPython kernel. |
|
67 | """ A FrontendWidget for an IPython kernel. | |
68 | """ |
|
68 | """ | |
69 |
|
69 | |||
70 | # If set, the 'custom_edit_requested(str, int)' signal will be emitted when |
|
70 | # If set, the 'custom_edit_requested(str, int)' signal will be emitted when | |
71 | # an editor is needed for a file. This overrides 'editor' and 'editor_line' |
|
71 | # an editor is needed for a file. This overrides 'editor' and 'editor_line' | |
72 | # settings. |
|
72 | # settings. | |
73 | custom_edit = Bool(False) |
|
73 | custom_edit = Bool(False) | |
74 | custom_edit_requested = QtCore.pyqtSignal(object, object) |
|
74 | custom_edit_requested = QtCore.pyqtSignal(object, object) | |
75 |
|
75 | |||
76 | # A command for invoking a system text editor. If the string contains a |
|
76 | # A command for invoking a system text editor. If the string contains a | |
77 | # {filename} format specifier, it will be used. Otherwise, the filename will |
|
77 | # {filename} format specifier, it will be used. Otherwise, the filename will | |
78 | # be appended to the end the command. |
|
78 | # be appended to the end the command. | |
79 | editor = Str('default', config=True) |
|
79 | editor = Str('default', config=True) | |
80 |
|
80 | |||
81 | # The editor command to use when a specific line number is requested. The |
|
81 | # The editor command to use when a specific line number is requested. The | |
82 | # string should contain two format specifiers: {line} and {filename}. If |
|
82 | # string should contain two format specifiers: {line} and {filename}. If | |
83 | # this parameter is not specified, the line number option to the %edit magic |
|
83 | # this parameter is not specified, the line number option to the %edit magic | |
84 | # will be ignored. |
|
84 | # will be ignored. | |
85 | editor_line = Str(config=True) |
|
85 | editor_line = Str(config=True) | |
86 |
|
86 | |||
87 | # A CSS stylesheet. The stylesheet can contain classes for: |
|
87 | # A CSS stylesheet. The stylesheet can contain classes for: | |
88 | # 1. Qt: QPlainTextEdit, QFrame, QWidget, etc |
|
88 | # 1. Qt: QPlainTextEdit, QFrame, QWidget, etc | |
89 | # 2. Pygments: .c, .k, .o, etc (see PygmentsHighlighter) |
|
89 | # 2. Pygments: .c, .k, .o, etc (see PygmentsHighlighter) | |
90 | # 3. IPython: .error, .in-prompt, .out-prompt, etc |
|
90 | # 3. IPython: .error, .in-prompt, .out-prompt, etc | |
91 | style_sheet = Str(config=True) |
|
91 | style_sheet = Str(config=True) | |
92 |
|
92 | |||
93 | # If not empty, use this Pygments style for syntax highlighting. Otherwise, |
|
93 | # If not empty, use this Pygments style for syntax highlighting. Otherwise, | |
94 | # the style sheet is queried for Pygments style information. |
|
94 | # the style sheet is queried for Pygments style information. | |
95 | syntax_style = Str(config=True) |
|
95 | syntax_style = Str(config=True) | |
96 |
|
96 | |||
97 | # Prompts. |
|
97 | # Prompts. | |
98 | in_prompt = Str(default_in_prompt, config=True) |
|
98 | in_prompt = Str(default_in_prompt, config=True) | |
99 | out_prompt = Str(default_out_prompt, config=True) |
|
99 | out_prompt = Str(default_out_prompt, config=True) | |
100 | input_sep = Str(default_input_sep, config=True) |
|
100 | input_sep = Str(default_input_sep, config=True) | |
101 | output_sep = Str(default_output_sep, config=True) |
|
101 | output_sep = Str(default_output_sep, config=True) | |
102 | output_sep2 = Str(default_output_sep2, config=True) |
|
102 | output_sep2 = Str(default_output_sep2, config=True) | |
103 |
|
103 | |||
104 | # FrontendWidget protected class variables. |
|
104 | # FrontendWidget protected class variables. | |
105 | _input_splitter_class = IPythonInputSplitter |
|
105 | _input_splitter_class = IPythonInputSplitter | |
106 |
|
106 | |||
107 | # IPythonWidget protected class variables. |
|
107 | # IPythonWidget protected class variables. | |
108 | _PromptBlock = namedtuple('_PromptBlock', ['block', 'length', 'number']) |
|
108 | _PromptBlock = namedtuple('_PromptBlock', ['block', 'length', 'number']) | |
109 | _payload_source_edit = 'IPython.zmq.zmqshell.ZMQInteractiveShell.edit_magic' |
|
109 | _payload_source_edit = 'IPython.zmq.zmqshell.ZMQInteractiveShell.edit_magic' | |
110 | _payload_source_exit = 'IPython.zmq.zmqshell.ZMQInteractiveShell.ask_exit' |
|
110 | _payload_source_exit = 'IPython.zmq.zmqshell.ZMQInteractiveShell.ask_exit' | |
111 | _payload_source_page = 'IPython.zmq.page.page' |
|
111 | _payload_source_page = 'IPython.zmq.page.page' | |
112 |
|
112 | |||
113 | #--------------------------------------------------------------------------- |
|
113 | #--------------------------------------------------------------------------- | |
114 | # 'object' interface |
|
114 | # 'object' interface | |
115 | #--------------------------------------------------------------------------- |
|
115 | #--------------------------------------------------------------------------- | |
116 |
|
116 | |||
117 | def __init__(self, *args, **kw): |
|
117 | def __init__(self, *args, **kw): | |
118 | super(IPythonWidget, self).__init__(*args, **kw) |
|
118 | super(IPythonWidget, self).__init__(*args, **kw) | |
119 |
|
119 | |||
120 | # IPythonWidget protected variables. |
|
120 | # IPythonWidget protected variables. | |
121 | self._payload_handlers = { |
|
121 | self._payload_handlers = { | |
122 | self._payload_source_edit : self._handle_payload_edit, |
|
122 | self._payload_source_edit : self._handle_payload_edit, | |
123 | self._payload_source_exit : self._handle_payload_exit, |
|
123 | self._payload_source_exit : self._handle_payload_exit, | |
124 | self._payload_source_page : self._handle_payload_page } |
|
124 | self._payload_source_page : self._handle_payload_page } | |
125 | self._previous_prompt_obj = None |
|
125 | self._previous_prompt_obj = None | |
126 |
|
126 | |||
127 | # Initialize widget styling. |
|
127 | # Initialize widget styling. | |
128 | if self.style_sheet: |
|
128 | if self.style_sheet: | |
129 | self._style_sheet_changed() |
|
129 | self._style_sheet_changed() | |
130 | self._syntax_style_changed() |
|
130 | self._syntax_style_changed() | |
131 | else: |
|
131 | else: | |
132 | self.set_default_style() |
|
132 | self.set_default_style() | |
133 |
|
133 | |||
134 | #--------------------------------------------------------------------------- |
|
134 | #--------------------------------------------------------------------------- | |
135 | # 'BaseFrontendMixin' abstract interface |
|
135 | # 'BaseFrontendMixin' abstract interface | |
136 | #--------------------------------------------------------------------------- |
|
136 | #--------------------------------------------------------------------------- | |
137 |
|
137 | |||
138 | def _handle_complete_reply(self, rep): |
|
138 | def _handle_complete_reply(self, rep): | |
139 | """ Reimplemented to support IPython's improved completion machinery. |
|
139 | """ Reimplemented to support IPython's improved completion machinery. | |
140 | """ |
|
140 | """ | |
141 | cursor = self._get_cursor() |
|
141 | cursor = self._get_cursor() | |
142 | info = self._request_info.get('complete') |
|
142 | info = self._request_info.get('complete') | |
143 | if info and info.id == rep['parent_header']['msg_id'] and \ |
|
143 | if info and info.id == rep['parent_header']['msg_id'] and \ | |
144 | info.pos == cursor.position(): |
|
144 | info.pos == cursor.position(): | |
145 | matches = rep['content']['matches'] |
|
145 | matches = rep['content']['matches'] | |
146 | text = rep['content']['matched_text'] |
|
146 | text = rep['content']['matched_text'] | |
147 | offset = len(text) |
|
147 | offset = len(text) | |
148 |
|
148 | |||
149 | # Clean up matches with period and path separators if the matched |
|
149 | # Clean up matches with period and path separators if the matched | |
150 | # text has not been transformed. This is done by truncating all |
|
150 | # text has not been transformed. This is done by truncating all | |
151 | # but the last component and then suitably decreasing the offset |
|
151 | # but the last component and then suitably decreasing the offset | |
152 | # between the current cursor position and the start of completion. |
|
152 | # between the current cursor position and the start of completion. | |
153 | if len(matches) > 1 and matches[0][:offset] == text: |
|
153 | if len(matches) > 1 and matches[0][:offset] == text: | |
154 | parts = re.split(r'[./\\]', text) |
|
154 | parts = re.split(r'[./\\]', text) | |
155 | sep_count = len(parts) - 1 |
|
155 | sep_count = len(parts) - 1 | |
156 | if sep_count: |
|
156 | if sep_count: | |
157 | chop_length = sum(map(len, parts[:sep_count])) + sep_count |
|
157 | chop_length = sum(map(len, parts[:sep_count])) + sep_count | |
158 | matches = [ match[chop_length:] for match in matches ] |
|
158 | matches = [ match[chop_length:] for match in matches ] | |
159 | offset -= chop_length |
|
159 | offset -= chop_length | |
160 |
|
160 | |||
161 | # Move the cursor to the start of the match and complete. |
|
161 | # Move the cursor to the start of the match and complete. | |
162 | cursor.movePosition(QtGui.QTextCursor.Left, n=offset) |
|
162 | cursor.movePosition(QtGui.QTextCursor.Left, n=offset) | |
163 | self._complete_with_items(cursor, matches) |
|
163 | self._complete_with_items(cursor, matches) | |
164 |
|
164 | |||
165 | def _handle_execute_reply(self, msg): |
|
165 | def _handle_execute_reply(self, msg): | |
166 | """ Reimplemented to support prompt requests. |
|
166 | """ Reimplemented to support prompt requests. | |
167 | """ |
|
167 | """ | |
168 | info = self._request_info.get('execute') |
|
168 | info = self._request_info.get('execute') | |
169 | if info and info.id == msg['parent_header']['msg_id']: |
|
169 | if info and info.id == msg['parent_header']['msg_id']: | |
170 | if info.kind == 'prompt': |
|
170 | if info.kind == 'prompt': | |
171 | number = msg['content']['execution_count'] + 1 |
|
171 | number = msg['content']['execution_count'] + 1 | |
172 | self._show_interpreter_prompt(number) |
|
172 | self._show_interpreter_prompt(number) | |
173 | else: |
|
173 | else: | |
174 | super(IPythonWidget, self)._handle_execute_reply(msg) |
|
174 | super(IPythonWidget, self)._handle_execute_reply(msg) | |
175 |
|
175 | |||
176 | def _handle_history_reply(self, msg): |
|
176 | def _handle_history_reply(self, msg): | |
177 | """ Implemented to handle history replies, which are only supported by |
|
177 | """ Implemented to handle history replies, which are only supported by | |
178 | the IPython kernel. |
|
178 | the IPython kernel. | |
179 | """ |
|
179 | """ | |
180 | history_dict = msg['content']['history'] |
|
180 | history_dict = msg['content']['history'] | |
181 | items = [ history_dict[key] for key in sorted(history_dict.keys()) ] |
|
181 | items = [ history_dict[key] for key in sorted(history_dict.keys()) ] | |
182 | self._set_history(items) |
|
182 | self._set_history(items) | |
183 |
|
183 | |||
184 | def _handle_pyout(self, msg): |
|
184 | def _handle_pyout(self, msg): | |
185 | """ Reimplemented for IPython-style "display hook". |
|
185 | """ Reimplemented for IPython-style "display hook". | |
186 | """ |
|
186 | """ | |
187 | if not self._hidden and self._is_from_this_session(msg): |
|
187 | if not self._hidden and self._is_from_this_session(msg): | |
188 | content = msg['content'] |
|
188 | content = msg['content'] | |
189 | prompt_number = content['execution_count'] |
|
189 | prompt_number = content['execution_count'] | |
190 | self._append_plain_text(self.output_sep) |
|
190 | self._append_plain_text(self.output_sep) | |
191 | self._append_html(self._make_out_prompt(prompt_number)) |
|
191 | self._append_html(self._make_out_prompt(prompt_number)) | |
192 | self._append_plain_text(content['data']+self.output_sep2) |
|
192 | self._append_plain_text(content['data']+self.output_sep2) | |
193 |
|
193 | |||
194 | def _started_channels(self): |
|
194 | def _started_channels(self): | |
195 | """ Reimplemented to make a history request. |
|
195 | """ Reimplemented to make a history request. | |
196 | """ |
|
196 | """ | |
197 | super(IPythonWidget, self)._started_channels() |
|
197 | super(IPythonWidget, self)._started_channels() | |
198 | # FIXME: Disabled until history requests are properly implemented. |
|
198 | # FIXME: Disabled until history requests are properly implemented. | |
199 | #self.kernel_manager.xreq_channel.history(raw=True, output=False) |
|
199 | #self.kernel_manager.xreq_channel.history(raw=True, output=False) | |
200 |
|
200 | |||
201 | #--------------------------------------------------------------------------- |
|
201 | #--------------------------------------------------------------------------- | |
202 | # 'ConsoleWidget' public interface |
|
202 | # 'ConsoleWidget' public interface | |
203 | #--------------------------------------------------------------------------- |
|
203 | #--------------------------------------------------------------------------- | |
204 |
|
204 | |||
205 | def copy(self): |
|
205 | def copy(self): | |
206 | """ Copy the currently selected text to the clipboard, removing prompts |
|
206 | """ Copy the currently selected text to the clipboard, removing prompts | |
207 | if possible. |
|
207 | if possible. | |
208 | """ |
|
208 | """ | |
209 | text = str(self._control.textCursor().selection().toPlainText()) |
|
209 | text = str(self._control.textCursor().selection().toPlainText()) | |
210 | if text: |
|
210 | if text: | |
211 | # Remove prompts. |
|
211 | # Remove prompts. | |
212 | lines = map(transform_ipy_prompt, text.splitlines()) |
|
212 | lines = map(transform_ipy_prompt, text.splitlines()) | |
213 | text = '\n'.join(lines) |
|
213 | text = '\n'.join(lines) | |
214 | # Expand tabs so that we respect PEP-8. |
|
214 | # Expand tabs so that we respect PEP-8. | |
215 | QtGui.QApplication.clipboard().setText(text.expandtabs(4)) |
|
215 | QtGui.QApplication.clipboard().setText(text.expandtabs(4)) | |
216 |
|
216 | |||
217 | #--------------------------------------------------------------------------- |
|
217 | #--------------------------------------------------------------------------- | |
218 | # 'FrontendWidget' public interface |
|
218 | # 'FrontendWidget' public interface | |
219 | #--------------------------------------------------------------------------- |
|
219 | #--------------------------------------------------------------------------- | |
220 |
|
220 | |||
221 | def execute_file(self, path, hidden=False): |
|
221 | def execute_file(self, path, hidden=False): | |
222 | """ Reimplemented to use the 'run' magic. |
|
222 | """ Reimplemented to use the 'run' magic. | |
223 | """ |
|
223 | """ | |
224 | self.execute('%%run %s' % path, hidden=hidden) |
|
224 | self.execute('%%run %s' % path, hidden=hidden) | |
225 |
|
225 | |||
226 | #--------------------------------------------------------------------------- |
|
226 | #--------------------------------------------------------------------------- | |
227 | # 'FrontendWidget' protected interface |
|
227 | # 'FrontendWidget' protected interface | |
228 | #--------------------------------------------------------------------------- |
|
228 | #--------------------------------------------------------------------------- | |
229 |
|
229 | |||
230 | def _complete(self): |
|
230 | def _complete(self): | |
231 | """ Reimplemented to support IPython's improved completion machinery. |
|
231 | """ Reimplemented to support IPython's improved completion machinery. | |
232 | """ |
|
232 | """ | |
233 | # We let the kernel split the input line, so we *always* send an empty |
|
233 | # We let the kernel split the input line, so we *always* send an empty | |
234 | # text field. Readline-based frontends do get a real text field which |
|
234 | # text field. Readline-based frontends do get a real text field which | |
235 | # they can use. |
|
235 | # they can use. | |
236 | text = '' |
|
236 | text = '' | |
237 |
|
237 | |||
238 | # Send the completion request to the kernel |
|
238 | # Send the completion request to the kernel | |
239 | msg_id = self.kernel_manager.xreq_channel.complete( |
|
239 | msg_id = self.kernel_manager.xreq_channel.complete( | |
240 | text, # text |
|
240 | text, # text | |
241 | self._get_input_buffer_cursor_line(), # line |
|
241 | self._get_input_buffer_cursor_line(), # line | |
242 | self._get_input_buffer_cursor_column(), # cursor_pos |
|
242 | self._get_input_buffer_cursor_column(), # cursor_pos | |
243 | self.input_buffer) # block |
|
243 | self.input_buffer) # block | |
244 | pos = self._get_cursor().position() |
|
244 | pos = self._get_cursor().position() | |
245 | info = self._CompletionRequest(msg_id, pos) |
|
245 | info = self._CompletionRequest(msg_id, pos) | |
246 | self._request_info['complete'] = info |
|
246 | self._request_info['complete'] = info | |
247 |
|
247 | |||
248 | def _get_banner(self): |
|
248 | def _get_banner(self): | |
249 | """ Reimplemented to return IPython's default banner. |
|
249 | """ Reimplemented to return IPython's default banner. | |
250 | """ |
|
250 | """ | |
251 | return default_gui_banner |
|
251 | return default_gui_banner | |
252 |
|
252 | |||
253 | def _process_execute_error(self, msg): |
|
253 | def _process_execute_error(self, msg): | |
254 | """ Reimplemented for IPython-style traceback formatting. |
|
254 | """ Reimplemented for IPython-style traceback formatting. | |
255 | """ |
|
255 | """ | |
256 | content = msg['content'] |
|
256 | content = msg['content'] | |
257 | traceback = '\n'.join(content['traceback']) + '\n' |
|
257 | traceback = '\n'.join(content['traceback']) + '\n' | |
258 | if False: |
|
258 | if False: | |
259 | # FIXME: For now, tracebacks come as plain text, so we can't use |
|
259 | # FIXME: For now, tracebacks come as plain text, so we can't use | |
260 | # the html renderer yet. Once we refactor ultratb to produce |
|
260 | # the html renderer yet. Once we refactor ultratb to produce | |
261 | # properly styled tracebacks, this branch should be the default |
|
261 | # properly styled tracebacks, this branch should be the default | |
262 | traceback = traceback.replace(' ', ' ') |
|
262 | traceback = traceback.replace(' ', ' ') | |
263 | traceback = traceback.replace('\n', '<br/>') |
|
263 | traceback = traceback.replace('\n', '<br/>') | |
264 |
|
264 | |||
265 | ename = content['ename'] |
|
265 | ename = content['ename'] | |
266 | ename_styled = '<span class="error">%s</span>' % ename |
|
266 | ename_styled = '<span class="error">%s</span>' % ename | |
267 | traceback = traceback.replace(ename, ename_styled) |
|
267 | traceback = traceback.replace(ename, ename_styled) | |
268 |
|
268 | |||
269 | self._append_html(traceback) |
|
269 | self._append_html(traceback) | |
270 | else: |
|
270 | else: | |
271 | # This is the fallback for now, using plain text with ansi escapes |
|
271 | # This is the fallback for now, using plain text with ansi escapes | |
272 | self._append_plain_text(traceback) |
|
272 | self._append_plain_text(traceback) | |
273 |
|
273 | |||
274 | def _process_execute_payload(self, item): |
|
274 | def _process_execute_payload(self, item): | |
275 | """ Reimplemented to dispatch payloads to handler methods. |
|
275 | """ Reimplemented to dispatch payloads to handler methods. | |
276 | """ |
|
276 | """ | |
277 | handler = self._payload_handlers.get(item['source']) |
|
277 | handler = self._payload_handlers.get(item['source']) | |
278 | if handler is None: |
|
278 | if handler is None: | |
279 | # We have no handler for this type of payload, simply ignore it |
|
279 | # We have no handler for this type of payload, simply ignore it | |
280 | return False |
|
280 | return False | |
281 | else: |
|
281 | else: | |
282 | handler(item) |
|
282 | handler(item) | |
283 | return True |
|
283 | return True | |
284 |
|
284 | |||
285 | def _show_interpreter_prompt(self, number=None): |
|
285 | def _show_interpreter_prompt(self, number=None): | |
286 | """ Reimplemented for IPython-style prompts. |
|
286 | """ Reimplemented for IPython-style prompts. | |
287 | """ |
|
287 | """ | |
288 | # If a number was not specified, make a prompt number request. |
|
288 | # If a number was not specified, make a prompt number request. | |
289 | if number is None: |
|
289 | if number is None: | |
290 | msg_id = self.kernel_manager.xreq_channel.execute('', silent=True) |
|
290 | msg_id = self.kernel_manager.xreq_channel.execute('', silent=True) | |
291 | info = self._ExecutionRequest(msg_id, 'prompt') |
|
291 | info = self._ExecutionRequest(msg_id, 'prompt') | |
292 | self._request_info['execute'] = info |
|
292 | self._request_info['execute'] = info | |
293 | return |
|
293 | return | |
294 |
|
294 | |||
295 | # Show a new prompt and save information about it so that it can be |
|
295 | # Show a new prompt and save information about it so that it can be | |
296 | # updated later if the prompt number turns out to be wrong. |
|
296 | # updated later if the prompt number turns out to be wrong. | |
297 | self._prompt_sep = self.input_sep |
|
297 | self._prompt_sep = self.input_sep | |
298 | self._show_prompt(self._make_in_prompt(number), html=True) |
|
298 | self._show_prompt(self._make_in_prompt(number), html=True) | |
299 | block = self._control.document().lastBlock() |
|
299 | block = self._control.document().lastBlock() | |
300 | length = len(self._prompt) |
|
300 | length = len(self._prompt) | |
301 | self._previous_prompt_obj = self._PromptBlock(block, length, number) |
|
301 | self._previous_prompt_obj = self._PromptBlock(block, length, number) | |
302 |
|
302 | |||
303 | # Update continuation prompt to reflect (possibly) new prompt length. |
|
303 | # Update continuation prompt to reflect (possibly) new prompt length. | |
304 | self._set_continuation_prompt( |
|
304 | self._set_continuation_prompt( | |
305 | self._make_continuation_prompt(self._prompt), html=True) |
|
305 | self._make_continuation_prompt(self._prompt), html=True) | |
306 |
|
306 | |||
307 | def _show_interpreter_prompt_for_reply(self, msg): |
|
307 | def _show_interpreter_prompt_for_reply(self, msg): | |
308 | """ Reimplemented for IPython-style prompts. |
|
308 | """ Reimplemented for IPython-style prompts. | |
309 | """ |
|
309 | """ | |
310 | # Update the old prompt number if necessary. |
|
310 | # Update the old prompt number if necessary. | |
311 | content = msg['content'] |
|
311 | content = msg['content'] | |
312 | previous_prompt_number = content['execution_count'] |
|
312 | previous_prompt_number = content['execution_count'] | |
313 | if self._previous_prompt_obj and \ |
|
313 | if self._previous_prompt_obj and \ | |
314 | self._previous_prompt_obj.number != previous_prompt_number: |
|
314 | self._previous_prompt_obj.number != previous_prompt_number: | |
315 | block = self._previous_prompt_obj.block |
|
315 | block = self._previous_prompt_obj.block | |
316 |
|
316 | |||
317 | # Make sure the prompt block has not been erased. |
|
317 | # Make sure the prompt block has not been erased. | |
318 | if block.isValid() and not block.text().isEmpty(): |
|
318 | if block.isValid() and not block.text().isEmpty(): | |
319 |
|
319 | |||
320 | # Remove the old prompt and insert a new prompt. |
|
320 | # Remove the old prompt and insert a new prompt. | |
321 | cursor = QtGui.QTextCursor(block) |
|
321 | cursor = QtGui.QTextCursor(block) | |
322 | cursor.movePosition(QtGui.QTextCursor.Right, |
|
322 | cursor.movePosition(QtGui.QTextCursor.Right, | |
323 | QtGui.QTextCursor.KeepAnchor, |
|
323 | QtGui.QTextCursor.KeepAnchor, | |
324 | self._previous_prompt_obj.length) |
|
324 | self._previous_prompt_obj.length) | |
325 | prompt = self._make_in_prompt(previous_prompt_number) |
|
325 | prompt = self._make_in_prompt(previous_prompt_number) | |
326 | self._prompt = self._insert_html_fetching_plain_text( |
|
326 | self._prompt = self._insert_html_fetching_plain_text( | |
327 | cursor, prompt) |
|
327 | cursor, prompt) | |
328 |
|
328 | |||
329 | # When the HTML is inserted, Qt blows away the syntax |
|
329 | # When the HTML is inserted, Qt blows away the syntax | |
330 | # highlighting for the line, so we need to rehighlight it. |
|
330 | # highlighting for the line, so we need to rehighlight it. | |
331 | self._highlighter.rehighlightBlock(cursor.block()) |
|
331 | self._highlighter.rehighlightBlock(cursor.block()) | |
332 |
|
332 | |||
333 | self._previous_prompt_obj = None |
|
333 | self._previous_prompt_obj = None | |
334 |
|
334 | |||
335 | # Show a new prompt with the kernel's estimated prompt number. |
|
335 | # Show a new prompt with the kernel's estimated prompt number. | |
336 | self._show_interpreter_prompt(previous_prompt_number+1) |
|
336 | self._show_interpreter_prompt(previous_prompt_number+1) | |
337 |
|
337 | |||
338 | #--------------------------------------------------------------------------- |
|
338 | #--------------------------------------------------------------------------- | |
339 | # 'IPythonWidget' interface |
|
339 | # 'IPythonWidget' interface | |
340 | #--------------------------------------------------------------------------- |
|
340 | #--------------------------------------------------------------------------- | |
341 |
|
341 | |||
342 | def set_default_style(self, lightbg=True): |
|
342 | def set_default_style(self, lightbg=True): | |
343 | """ Sets the widget style to the class defaults. |
|
343 | """ Sets the widget style to the class defaults. | |
344 |
|
344 | |||
345 | Parameters: |
|
345 | Parameters: | |
346 | ----------- |
|
346 | ----------- | |
347 | lightbg : bool, optional (default True) |
|
347 | lightbg : bool, optional (default True) | |
348 | Whether to use the default IPython light background or dark |
|
348 | Whether to use the default IPython light background or dark | |
349 | background style. |
|
349 | background style. | |
350 | """ |
|
350 | """ | |
351 | if lightbg: |
|
351 | if lightbg: | |
352 | self.style_sheet = default_light_style_sheet |
|
352 | self.style_sheet = default_light_style_sheet | |
353 | self.syntax_style = default_light_syntax_style |
|
353 | self.syntax_style = default_light_syntax_style | |
354 | else: |
|
354 | else: | |
355 | self.style_sheet = default_dark_style_sheet |
|
355 | self.style_sheet = default_dark_style_sheet | |
356 | self.syntax_style = default_dark_syntax_style |
|
356 | self.syntax_style = default_dark_syntax_style | |
357 |
|
357 | |||
358 | #--------------------------------------------------------------------------- |
|
358 | #--------------------------------------------------------------------------- | |
359 | # 'IPythonWidget' protected interface |
|
359 | # 'IPythonWidget' protected interface | |
360 | #--------------------------------------------------------------------------- |
|
360 | #--------------------------------------------------------------------------- | |
361 |
|
361 | |||
362 | def _edit(self, filename, line=None): |
|
362 | def _edit(self, filename, line=None): | |
363 | """ Opens a Python script for editing. |
|
363 | """ Opens a Python script for editing. | |
364 |
|
364 | |||
365 | Parameters: |
|
365 | Parameters: | |
366 | ----------- |
|
366 | ----------- | |
367 | filename : str |
|
367 | filename : str | |
368 | A path to a local system file. |
|
368 | A path to a local system file. | |
369 |
|
369 | |||
370 | line : int, optional |
|
370 | line : int, optional | |
371 | A line of interest in the file. |
|
371 | A line of interest in the file. | |
372 | """ |
|
372 | """ | |
373 | if self.custom_edit: |
|
373 | if self.custom_edit: | |
374 | self.custom_edit_requested.emit(filename, line) |
|
374 | self.custom_edit_requested.emit(filename, line) | |
375 | elif self.editor == 'default': |
|
375 | elif self.editor == 'default': | |
376 | self._append_plain_text('No default editor available.\n') |
|
376 | self._append_plain_text('No default editor available.\n') | |
377 | else: |
|
377 | else: | |
378 | try: |
|
378 | try: | |
379 | filename = '"%s"' % filename |
|
379 | filename = '"%s"' % filename | |
380 | if line and self.editor_line: |
|
380 | if line and self.editor_line: | |
381 | command = self.editor_line.format(filename=filename, |
|
381 | command = self.editor_line.format(filename=filename, | |
382 | line=line) |
|
382 | line=line) | |
383 | else: |
|
383 | else: | |
384 | try: |
|
384 | try: | |
385 | command = self.editor.format() |
|
385 | command = self.editor.format() | |
386 | except KeyError: |
|
386 | except KeyError: | |
387 | command = self.editor.format(filename=filename) |
|
387 | command = self.editor.format(filename=filename) | |
388 | else: |
|
388 | else: | |
389 | command += ' ' + filename |
|
389 | command += ' ' + filename | |
390 | except KeyError: |
|
390 | except KeyError: | |
391 | self._append_plain_text('Invalid editor command.\n') |
|
391 | self._append_plain_text('Invalid editor command.\n') | |
392 | else: |
|
392 | else: | |
393 | try: |
|
393 | try: | |
394 | Popen(command, shell=True) |
|
394 | Popen(command, shell=True) | |
395 | except OSError: |
|
395 | except OSError: | |
396 | msg = 'Opening editor with command "%s" failed.\n' |
|
396 | msg = 'Opening editor with command "%s" failed.\n' | |
397 | self._append_plain_text(msg % command) |
|
397 | self._append_plain_text(msg % command) | |
398 |
|
398 | |||
399 | def _make_in_prompt(self, number): |
|
399 | def _make_in_prompt(self, number): | |
400 | """ Given a prompt number, returns an HTML In prompt. |
|
400 | """ Given a prompt number, returns an HTML In prompt. | |
401 | """ |
|
401 | """ | |
402 | body = self.in_prompt % number |
|
402 | body = self.in_prompt % number | |
403 | return '<span class="in-prompt">%s</span>' % body |
|
403 | return '<span class="in-prompt">%s</span>' % body | |
404 |
|
404 | |||
405 | def _make_continuation_prompt(self, prompt): |
|
405 | def _make_continuation_prompt(self, prompt): | |
406 | """ Given a plain text version of an In prompt, returns an HTML |
|
406 | """ Given a plain text version of an In prompt, returns an HTML | |
407 | continuation prompt. |
|
407 | continuation prompt. | |
408 | """ |
|
408 | """ | |
409 | end_chars = '...: ' |
|
409 | end_chars = '...: ' | |
410 | space_count = len(prompt.lstrip('\n')) - len(end_chars) |
|
410 | space_count = len(prompt.lstrip('\n')) - len(end_chars) | |
411 | body = ' ' * space_count + end_chars |
|
411 | body = ' ' * space_count + end_chars | |
412 | return '<span class="in-prompt">%s</span>' % body |
|
412 | return '<span class="in-prompt">%s</span>' % body | |
413 |
|
413 | |||
414 | def _make_out_prompt(self, number): |
|
414 | def _make_out_prompt(self, number): | |
415 | """ Given a prompt number, returns an HTML Out prompt. |
|
415 | """ Given a prompt number, returns an HTML Out prompt. | |
416 | """ |
|
416 | """ | |
417 | body = self.out_prompt % number |
|
417 | body = self.out_prompt % number | |
418 | return '<span class="out-prompt">%s</span>' % body |
|
418 | return '<span class="out-prompt">%s</span>' % body | |
419 |
|
419 | |||
420 | #------ Payload handlers -------------------------------------------------- |
|
420 | #------ Payload handlers -------------------------------------------------- | |
421 |
|
421 | |||
422 | # Payload handlers with a generic interface: each takes the opaque payload |
|
422 | # Payload handlers with a generic interface: each takes the opaque payload | |
423 | # dict, unpacks it and calls the underlying functions with the necessary |
|
423 | # dict, unpacks it and calls the underlying functions with the necessary | |
424 | # arguments. |
|
424 | # arguments. | |
425 |
|
425 | |||
426 | def _handle_payload_edit(self, item): |
|
426 | def _handle_payload_edit(self, item): | |
427 | self._edit(item['filename'], item['line_number']) |
|
427 | self._edit(item['filename'], item['line_number']) | |
428 |
|
428 | |||
429 | def _handle_payload_exit(self, item): |
|
429 | def _handle_payload_exit(self, item): | |
430 | self.exit_requested.emit() |
|
430 | self.exit_requested.emit() | |
431 |
|
431 | |||
432 | def _handle_payload_page(self, item): |
|
432 | def _handle_payload_page(self, item): | |
433 | self._page(item['text']) |
|
433 | # Since the plain text widget supports only a very small subset of HTML | |
|
434 | # and we have no control over the HTML source, we only page HTML | |||
|
435 | # payloads in the rich text widget. | |||
|
436 | if item['html'] and self.kind == 'rich': | |||
|
437 | self._page(item['html'], html=True) | |||
|
438 | else: | |||
|
439 | self._page(item['text'], html=False) | |||
434 |
|
440 | |||
435 | #------ Trait change handlers --------------------------------------------- |
|
441 | #------ Trait change handlers --------------------------------------------- | |
436 |
|
442 | |||
437 | def _style_sheet_changed(self): |
|
443 | def _style_sheet_changed(self): | |
438 | """ Set the style sheets of the underlying widgets. |
|
444 | """ Set the style sheets of the underlying widgets. | |
439 | """ |
|
445 | """ | |
440 | self.setStyleSheet(self.style_sheet) |
|
446 | self.setStyleSheet(self.style_sheet) | |
441 | self._control.document().setDefaultStyleSheet(self.style_sheet) |
|
447 | self._control.document().setDefaultStyleSheet(self.style_sheet) | |
442 | if self._page_control: |
|
448 | if self._page_control: | |
443 | self._page_control.document().setDefaultStyleSheet(self.style_sheet) |
|
449 | self._page_control.document().setDefaultStyleSheet(self.style_sheet) | |
444 |
|
450 | |||
445 | bg_color = self._control.palette().background().color() |
|
451 | bg_color = self._control.palette().background().color() | |
446 | self._ansi_processor.set_background_color(bg_color) |
|
452 | self._ansi_processor.set_background_color(bg_color) | |
447 |
|
453 | |||
448 | def _syntax_style_changed(self): |
|
454 | def _syntax_style_changed(self): | |
449 | """ Set the style for the syntax highlighter. |
|
455 | """ Set the style for the syntax highlighter. | |
450 | """ |
|
456 | """ | |
451 | if self.syntax_style: |
|
457 | if self.syntax_style: | |
452 | self._highlighter.set_style(self.syntax_style) |
|
458 | self._highlighter.set_style(self.syntax_style) | |
453 | else: |
|
459 | else: | |
454 | self._highlighter.set_style_sheet(self.style_sheet) |
|
460 | self._highlighter.set_style_sheet(self.style_sheet) | |
455 |
|
461 |
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