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@@ -1,1816 +1,1822 b'' | |||||
1 | """ An abstract base class for console-type widgets. |
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1 | """ An abstract base class for console-type widgets. | |
2 | """ |
|
2 | """ | |
3 | #----------------------------------------------------------------------------- |
|
3 | #----------------------------------------------------------------------------- | |
4 | # Imports |
|
4 | # Imports | |
5 | #----------------------------------------------------------------------------- |
|
5 | #----------------------------------------------------------------------------- | |
6 |
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6 | |||
7 | # Standard library imports |
|
7 | # Standard library imports | |
8 | import os |
|
8 | import os | |
9 | from os.path import commonprefix |
|
9 | from os.path import commonprefix | |
10 | import re |
|
10 | import re | |
11 | import sys |
|
11 | import sys | |
12 | from textwrap import dedent |
|
12 | from textwrap import dedent | |
13 | from unicodedata import category |
|
13 | from unicodedata import category | |
14 |
|
14 | |||
15 | # System library imports |
|
15 | # System library imports | |
16 | from IPython.external.qt import QtCore, QtGui |
|
16 | from IPython.external.qt import QtCore, QtGui | |
17 |
|
17 | |||
18 | # Local imports |
|
18 | # Local imports | |
19 | from IPython.config.configurable import Configurable |
|
19 | from IPython.config.configurable import Configurable | |
20 | from IPython.frontend.qt.rich_text import HtmlExporter |
|
20 | from IPython.frontend.qt.rich_text import HtmlExporter | |
21 | from IPython.frontend.qt.util import MetaQObjectHasTraits, get_font |
|
21 | from IPython.frontend.qt.util import MetaQObjectHasTraits, get_font | |
22 | from IPython.utils.traitlets import Bool, Enum, Int, Unicode |
|
22 | from IPython.utils.traitlets import Bool, Enum, Int, Unicode | |
23 | from ansi_code_processor import QtAnsiCodeProcessor |
|
23 | from ansi_code_processor import QtAnsiCodeProcessor | |
24 | from completion_widget import CompletionWidget |
|
24 | from completion_widget import CompletionWidget | |
25 | from kill_ring import QtKillRing |
|
25 | from kill_ring import QtKillRing | |
26 |
|
26 | |||
27 | #----------------------------------------------------------------------------- |
|
27 | #----------------------------------------------------------------------------- | |
28 | # Functions |
|
28 | # Functions | |
29 | #----------------------------------------------------------------------------- |
|
29 | #----------------------------------------------------------------------------- | |
30 |
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30 | |||
31 | def is_letter_or_number(char): |
|
31 | def is_letter_or_number(char): | |
32 | """ Returns whether the specified unicode character is a letter or a number. |
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32 | """ Returns whether the specified unicode character is a letter or a number. | |
33 | """ |
|
33 | """ | |
34 | cat = category(char) |
|
34 | cat = category(char) | |
35 | return cat.startswith('L') or cat.startswith('N') |
|
35 | return cat.startswith('L') or cat.startswith('N') | |
36 |
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36 | |||
37 | #----------------------------------------------------------------------------- |
|
37 | #----------------------------------------------------------------------------- | |
38 | # Classes |
|
38 | # Classes | |
39 | #----------------------------------------------------------------------------- |
|
39 | #----------------------------------------------------------------------------- | |
40 |
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40 | |||
41 | class ConsoleWidget(Configurable, QtGui.QWidget): |
|
41 | class ConsoleWidget(Configurable, QtGui.QWidget): | |
42 | """ An abstract base class for console-type widgets. This class has |
|
42 | """ An abstract base class for console-type widgets. This class has | |
43 | functionality for: |
|
43 | functionality for: | |
44 |
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44 | |||
45 | * Maintaining a prompt and editing region |
|
45 | * Maintaining a prompt and editing region | |
46 | * Providing the traditional Unix-style console keyboard shortcuts |
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46 | * Providing the traditional Unix-style console keyboard shortcuts | |
47 | * Performing tab completion |
|
47 | * Performing tab completion | |
48 | * Paging text |
|
48 | * Paging text | |
49 | * Handling ANSI escape codes |
|
49 | * Handling ANSI escape codes | |
50 |
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50 | |||
51 | ConsoleWidget also provides a number of utility methods that will be |
|
51 | ConsoleWidget also provides a number of utility methods that will be | |
52 | convenient to implementors of a console-style widget. |
|
52 | convenient to implementors of a console-style widget. | |
53 | """ |
|
53 | """ | |
54 | __metaclass__ = MetaQObjectHasTraits |
|
54 | __metaclass__ = MetaQObjectHasTraits | |
55 |
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55 | |||
56 | #------ Configuration ------------------------------------------------------ |
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56 | #------ Configuration ------------------------------------------------------ | |
57 |
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57 | |||
58 | ansi_codes = Bool(True, config=True, |
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58 | ansi_codes = Bool(True, config=True, | |
59 | help="Whether to process ANSI escape codes." |
|
59 | help="Whether to process ANSI escape codes." | |
60 | ) |
|
60 | ) | |
61 | buffer_size = Int(500, config=True, |
|
61 | buffer_size = Int(500, config=True, | |
62 | help=""" |
|
62 | help=""" | |
63 | The maximum number of lines of text before truncation. Specifying a |
|
63 | The maximum number of lines of text before truncation. Specifying a | |
64 | non-positive number disables text truncation (not recommended). |
|
64 | non-positive number disables text truncation (not recommended). | |
65 | """ |
|
65 | """ | |
66 | ) |
|
66 | ) | |
67 | gui_completion = Bool(False, config=True, |
|
67 | gui_completion = Bool(False, config=True, | |
68 | help=""" |
|
68 | help=""" | |
69 | Use a list widget instead of plain text output for tab completion. |
|
69 | Use a list widget instead of plain text output for tab completion. | |
70 | """ |
|
70 | """ | |
71 | ) |
|
71 | ) | |
72 | # NOTE: this value can only be specified during initialization. |
|
72 | # NOTE: this value can only be specified during initialization. | |
73 | kind = Enum(['plain', 'rich'], default_value='plain', config=True, |
|
73 | kind = Enum(['plain', 'rich'], default_value='plain', config=True, | |
74 | help=""" |
|
74 | help=""" | |
75 | The type of underlying text widget to use. Valid values are 'plain', |
|
75 | The type of underlying text widget to use. Valid values are 'plain', | |
76 | which specifies a QPlainTextEdit, and 'rich', which specifies a |
|
76 | which specifies a QPlainTextEdit, and 'rich', which specifies a | |
77 | QTextEdit. |
|
77 | QTextEdit. | |
78 | """ |
|
78 | """ | |
79 | ) |
|
79 | ) | |
80 | # NOTE: this value can only be specified during initialization. |
|
80 | # NOTE: this value can only be specified during initialization. | |
81 | paging = Enum(['inside', 'hsplit', 'vsplit', 'custom', 'none'], |
|
81 | paging = Enum(['inside', 'hsplit', 'vsplit', 'custom', 'none'], | |
82 | default_value='inside', config=True, |
|
82 | default_value='inside', config=True, | |
83 | help=""" |
|
83 | help=""" | |
84 | The type of paging to use. Valid values are: |
|
84 | The type of paging to use. Valid values are: | |
85 |
|
85 | |||
86 | 'inside' : The widget pages like a traditional terminal. |
|
86 | 'inside' : The widget pages like a traditional terminal. | |
87 | 'hsplit' : When paging is requested, the widget is split |
|
87 | 'hsplit' : When paging is requested, the widget is split | |
88 | horizontally. The top pane contains the console, and the |
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88 | horizontally. The top pane contains the console, and the | |
89 | bottom pane contains the paged text. |
|
89 | bottom pane contains the paged text. | |
90 | 'vsplit' : Similar to 'hsplit', except that a vertical splitter |
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90 | 'vsplit' : Similar to 'hsplit', except that a vertical splitter | |
91 | used. |
|
91 | used. | |
92 | 'custom' : No action is taken by the widget beyond emitting a |
|
92 | 'custom' : No action is taken by the widget beyond emitting a | |
93 | 'custom_page_requested(str)' signal. |
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93 | 'custom_page_requested(str)' signal. | |
94 | 'none' : The text is written directly to the console. |
|
94 | 'none' : The text is written directly to the console. | |
95 | """) |
|
95 | """) | |
96 |
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96 | |||
97 | font_family = Unicode(config=True, |
|
97 | font_family = Unicode(config=True, | |
98 | help="""The font family to use for the console. |
|
98 | help="""The font family to use for the console. | |
99 | On OSX this defaults to Monaco, on Windows the default is |
|
99 | On OSX this defaults to Monaco, on Windows the default is | |
100 | Consolas with fallback of Courier, and on other platforms |
|
100 | Consolas with fallback of Courier, and on other platforms | |
101 | the default is Monospace. |
|
101 | the default is Monospace. | |
102 | """) |
|
102 | """) | |
103 | def _font_family_default(self): |
|
103 | def _font_family_default(self): | |
104 | if sys.platform == 'win32': |
|
104 | if sys.platform == 'win32': | |
105 | # Consolas ships with Vista/Win7, fallback to Courier if needed |
|
105 | # Consolas ships with Vista/Win7, fallback to Courier if needed | |
106 | return 'Consolas' |
|
106 | return 'Consolas' | |
107 | elif sys.platform == 'darwin': |
|
107 | elif sys.platform == 'darwin': | |
108 | # OSX always has Monaco, no need for a fallback |
|
108 | # OSX always has Monaco, no need for a fallback | |
109 | return 'Monaco' |
|
109 | return 'Monaco' | |
110 | else: |
|
110 | else: | |
111 | # Monospace should always exist, no need for a fallback |
|
111 | # Monospace should always exist, no need for a fallback | |
112 | return 'Monospace' |
|
112 | return 'Monospace' | |
113 |
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113 | |||
114 | font_size = Int(config=True, |
|
114 | font_size = Int(config=True, | |
115 | help="""The font size. If unconfigured, Qt will be entrusted |
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115 | help="""The font size. If unconfigured, Qt will be entrusted | |
116 | with the size of the font. |
|
116 | with the size of the font. | |
117 | """) |
|
117 | """) | |
118 |
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118 | |||
119 | # Whether to override ShortcutEvents for the keybindings defined by this |
|
119 | # Whether to override ShortcutEvents for the keybindings defined by this | |
120 | # widget (Ctrl+n, Ctrl+a, etc). Enable this if you want this widget to take |
|
120 | # widget (Ctrl+n, Ctrl+a, etc). Enable this if you want this widget to take | |
121 | # priority (when it has focus) over, e.g., window-level menu shortcuts. |
|
121 | # priority (when it has focus) over, e.g., window-level menu shortcuts. | |
122 | override_shortcuts = Bool(False) |
|
122 | override_shortcuts = Bool(False) | |
123 |
|
123 | |||
124 | #------ Signals ------------------------------------------------------------ |
|
124 | #------ Signals ------------------------------------------------------------ | |
125 |
|
125 | |||
126 | # Signals that indicate ConsoleWidget state. |
|
126 | # Signals that indicate ConsoleWidget state. | |
127 | copy_available = QtCore.Signal(bool) |
|
127 | copy_available = QtCore.Signal(bool) | |
128 | redo_available = QtCore.Signal(bool) |
|
128 | redo_available = QtCore.Signal(bool) | |
129 | undo_available = QtCore.Signal(bool) |
|
129 | undo_available = QtCore.Signal(bool) | |
130 |
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130 | |||
131 | # Signal emitted when paging is needed and the paging style has been |
|
131 | # Signal emitted when paging is needed and the paging style has been | |
132 | # specified as 'custom'. |
|
132 | # specified as 'custom'. | |
133 | custom_page_requested = QtCore.Signal(object) |
|
133 | custom_page_requested = QtCore.Signal(object) | |
134 |
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134 | |||
135 | # Signal emitted when the font is changed. |
|
135 | # Signal emitted when the font is changed. | |
136 | font_changed = QtCore.Signal(QtGui.QFont) |
|
136 | font_changed = QtCore.Signal(QtGui.QFont) | |
137 |
|
137 | |||
138 | #------ Protected class variables ------------------------------------------ |
|
138 | #------ Protected class variables ------------------------------------------ | |
139 |
|
139 | |||
140 | # When the control key is down, these keys are mapped. |
|
140 | # When the control key is down, these keys are mapped. | |
141 | _ctrl_down_remap = { QtCore.Qt.Key_B : QtCore.Qt.Key_Left, |
|
141 | _ctrl_down_remap = { QtCore.Qt.Key_B : QtCore.Qt.Key_Left, | |
142 | QtCore.Qt.Key_F : QtCore.Qt.Key_Right, |
|
142 | QtCore.Qt.Key_F : QtCore.Qt.Key_Right, | |
143 | QtCore.Qt.Key_A : QtCore.Qt.Key_Home, |
|
143 | QtCore.Qt.Key_A : QtCore.Qt.Key_Home, | |
144 | QtCore.Qt.Key_P : QtCore.Qt.Key_Up, |
|
144 | QtCore.Qt.Key_P : QtCore.Qt.Key_Up, | |
145 | QtCore.Qt.Key_N : QtCore.Qt.Key_Down, |
|
145 | QtCore.Qt.Key_N : QtCore.Qt.Key_Down, | |
146 | QtCore.Qt.Key_H : QtCore.Qt.Key_Backspace, |
|
146 | QtCore.Qt.Key_H : QtCore.Qt.Key_Backspace, | |
147 | QtCore.Qt.Key_D : QtCore.Qt.Key_Delete, } |
|
147 | QtCore.Qt.Key_D : QtCore.Qt.Key_Delete, } | |
148 | if not sys.platform == 'darwin': |
|
148 | if not sys.platform == 'darwin': | |
149 | # On OS X, Ctrl-E already does the right thing, whereas End moves the |
|
149 | # On OS X, Ctrl-E already does the right thing, whereas End moves the | |
150 | # cursor to the bottom of the buffer. |
|
150 | # cursor to the bottom of the buffer. | |
151 | _ctrl_down_remap[QtCore.Qt.Key_E] = QtCore.Qt.Key_End |
|
151 | _ctrl_down_remap[QtCore.Qt.Key_E] = QtCore.Qt.Key_End | |
152 |
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152 | |||
153 | # The shortcuts defined by this widget. We need to keep track of these to |
|
153 | # The shortcuts defined by this widget. We need to keep track of these to | |
154 | # support 'override_shortcuts' above. |
|
154 | # support 'override_shortcuts' above. | |
155 | _shortcuts = set(_ctrl_down_remap.keys() + |
|
155 | _shortcuts = set(_ctrl_down_remap.keys() + | |
156 | [ QtCore.Qt.Key_C, QtCore.Qt.Key_G, QtCore.Qt.Key_O, |
|
156 | [ QtCore.Qt.Key_C, QtCore.Qt.Key_G, QtCore.Qt.Key_O, | |
157 | QtCore.Qt.Key_V ]) |
|
157 | QtCore.Qt.Key_V ]) | |
158 |
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158 | |||
159 | #--------------------------------------------------------------------------- |
|
159 | #--------------------------------------------------------------------------- | |
160 | # 'QObject' interface |
|
160 | # 'QObject' interface | |
161 | #--------------------------------------------------------------------------- |
|
161 | #--------------------------------------------------------------------------- | |
162 |
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162 | |||
163 | def __init__(self, parent=None, **kw): |
|
163 | def __init__(self, parent=None, **kw): | |
164 | """ Create a ConsoleWidget. |
|
164 | """ Create a ConsoleWidget. | |
165 |
|
165 | |||
166 | Parameters: |
|
166 | Parameters: | |
167 | ----------- |
|
167 | ----------- | |
168 | parent : QWidget, optional [default None] |
|
168 | parent : QWidget, optional [default None] | |
169 | The parent for this widget. |
|
169 | The parent for this widget. | |
170 | """ |
|
170 | """ | |
171 | QtGui.QWidget.__init__(self, parent) |
|
171 | QtGui.QWidget.__init__(self, parent) | |
172 | Configurable.__init__(self, **kw) |
|
172 | Configurable.__init__(self, **kw) | |
173 |
|
173 | |||
174 | # Create the layout and underlying text widget. |
|
174 | # Create the layout and underlying text widget. | |
175 | layout = QtGui.QStackedLayout(self) |
|
175 | layout = QtGui.QStackedLayout(self) | |
176 | layout.setContentsMargins(0, 0, 0, 0) |
|
176 | layout.setContentsMargins(0, 0, 0, 0) | |
177 | self._control = self._create_control() |
|
177 | self._control = self._create_control() | |
178 | self._page_control = None |
|
178 | self._page_control = None | |
179 | self._splitter = None |
|
179 | self._splitter = None | |
180 | if self.paging in ('hsplit', 'vsplit'): |
|
180 | if self.paging in ('hsplit', 'vsplit'): | |
181 | self._splitter = QtGui.QSplitter() |
|
181 | self._splitter = QtGui.QSplitter() | |
182 | if self.paging == 'hsplit': |
|
182 | if self.paging == 'hsplit': | |
183 | self._splitter.setOrientation(QtCore.Qt.Horizontal) |
|
183 | self._splitter.setOrientation(QtCore.Qt.Horizontal) | |
184 | else: |
|
184 | else: | |
185 | self._splitter.setOrientation(QtCore.Qt.Vertical) |
|
185 | self._splitter.setOrientation(QtCore.Qt.Vertical) | |
186 | self._splitter.addWidget(self._control) |
|
186 | self._splitter.addWidget(self._control) | |
187 | layout.addWidget(self._splitter) |
|
187 | layout.addWidget(self._splitter) | |
188 | else: |
|
188 | else: | |
189 | layout.addWidget(self._control) |
|
189 | layout.addWidget(self._control) | |
190 |
|
190 | |||
191 | # Create the paging widget, if necessary. |
|
191 | # Create the paging widget, if necessary. | |
192 | if self.paging in ('inside', 'hsplit', 'vsplit'): |
|
192 | if self.paging in ('inside', 'hsplit', 'vsplit'): | |
193 | self._page_control = self._create_page_control() |
|
193 | self._page_control = self._create_page_control() | |
194 | if self._splitter: |
|
194 | if self._splitter: | |
195 | self._page_control.hide() |
|
195 | self._page_control.hide() | |
196 | self._splitter.addWidget(self._page_control) |
|
196 | self._splitter.addWidget(self._page_control) | |
197 | else: |
|
197 | else: | |
198 | layout.addWidget(self._page_control) |
|
198 | layout.addWidget(self._page_control) | |
199 |
|
199 | |||
200 | # Initialize protected variables. Some variables contain useful state |
|
200 | # Initialize protected variables. Some variables contain useful state | |
201 | # information for subclasses; they should be considered read-only. |
|
201 | # information for subclasses; they should be considered read-only. | |
202 | self._append_before_prompt_pos = 0 |
|
202 | self._append_before_prompt_pos = 0 | |
203 | self._ansi_processor = QtAnsiCodeProcessor() |
|
203 | self._ansi_processor = QtAnsiCodeProcessor() | |
204 | self._completion_widget = CompletionWidget(self._control) |
|
204 | self._completion_widget = CompletionWidget(self._control) | |
205 | self._continuation_prompt = '> ' |
|
205 | self._continuation_prompt = '> ' | |
206 | self._continuation_prompt_html = None |
|
206 | self._continuation_prompt_html = None | |
207 | self._executing = False |
|
207 | self._executing = False | |
208 | self._filter_drag = False |
|
208 | self._filter_drag = False | |
209 | self._filter_resize = False |
|
209 | self._filter_resize = False | |
210 | self._html_exporter = HtmlExporter(self._control) |
|
210 | self._html_exporter = HtmlExporter(self._control) | |
211 | self._input_buffer_executing = '' |
|
211 | self._input_buffer_executing = '' | |
212 | self._input_buffer_pending = '' |
|
212 | self._input_buffer_pending = '' | |
213 | self._kill_ring = QtKillRing(self._control) |
|
213 | self._kill_ring = QtKillRing(self._control) | |
214 | self._prompt = '' |
|
214 | self._prompt = '' | |
215 | self._prompt_html = None |
|
215 | self._prompt_html = None | |
216 | self._prompt_pos = 0 |
|
216 | self._prompt_pos = 0 | |
217 | self._prompt_sep = '' |
|
217 | self._prompt_sep = '' | |
218 | self._reading = False |
|
218 | self._reading = False | |
219 | self._reading_callback = None |
|
219 | self._reading_callback = None | |
220 | self._tab_width = 8 |
|
220 | self._tab_width = 8 | |
221 | self._text_completing_pos = 0 |
|
221 | self._text_completing_pos = 0 | |
222 |
|
222 | |||
223 | # Set a monospaced font. |
|
223 | # Set a monospaced font. | |
224 | self.reset_font() |
|
224 | self.reset_font() | |
225 |
|
225 | |||
226 | # Configure actions. |
|
226 | # Configure actions. | |
227 | action = QtGui.QAction('Print', None) |
|
227 | action = QtGui.QAction('Print', None) | |
228 | action.setEnabled(True) |
|
228 | action.setEnabled(True) | |
229 | printkey = QtGui.QKeySequence(QtGui.QKeySequence.Print) |
|
229 | printkey = QtGui.QKeySequence(QtGui.QKeySequence.Print) | |
230 | if printkey.matches("Ctrl+P") and sys.platform != 'darwin': |
|
230 | if printkey.matches("Ctrl+P") and sys.platform != 'darwin': | |
231 | # Only override the default if there is a collision. |
|
231 | # Only override the default if there is a collision. | |
232 | # Qt ctrl = cmd on OSX, so the match gets a false positive on OSX. |
|
232 | # Qt ctrl = cmd on OSX, so the match gets a false positive on OSX. | |
233 | printkey = "Ctrl+Shift+P" |
|
233 | printkey = "Ctrl+Shift+P" | |
234 | action.setShortcut(printkey) |
|
234 | action.setShortcut(printkey) | |
235 | action.triggered.connect(self.print_) |
|
235 | action.triggered.connect(self.print_) | |
236 | self.addAction(action) |
|
236 | self.addAction(action) | |
237 | self._print_action = action |
|
237 | self._print_action = action | |
238 |
|
238 | |||
239 | action = QtGui.QAction('Save as HTML/XML', None) |
|
239 | action = QtGui.QAction('Save as HTML/XML', None) | |
240 | action.setShortcut(QtGui.QKeySequence.Save) |
|
240 | action.setShortcut(QtGui.QKeySequence.Save) | |
241 | action.triggered.connect(self.export_html) |
|
241 | action.triggered.connect(self.export_html) | |
242 | self.addAction(action) |
|
242 | self.addAction(action) | |
243 | self._export_action = action |
|
243 | self._export_action = action | |
244 |
|
244 | |||
245 | action = QtGui.QAction('Select All', None) |
|
245 | action = QtGui.QAction('Select All', None) | |
246 | action.setEnabled(True) |
|
246 | action.setEnabled(True) | |
247 | action.setShortcut(QtGui.QKeySequence.SelectAll) |
|
247 | action.setShortcut(QtGui.QKeySequence.SelectAll) | |
248 | action.triggered.connect(self.select_all) |
|
248 | action.triggered.connect(self.select_all) | |
249 | self.addAction(action) |
|
249 | self.addAction(action) | |
250 | self._select_all_action = action |
|
250 | self._select_all_action = action | |
251 |
|
251 | |||
252 | def eventFilter(self, obj, event): |
|
252 | def eventFilter(self, obj, event): | |
253 | """ Reimplemented to ensure a console-like behavior in the underlying |
|
253 | """ Reimplemented to ensure a console-like behavior in the underlying | |
254 | text widgets. |
|
254 | text widgets. | |
255 | """ |
|
255 | """ | |
256 | etype = event.type() |
|
256 | etype = event.type() | |
257 | if etype == QtCore.QEvent.KeyPress: |
|
257 | if etype == QtCore.QEvent.KeyPress: | |
258 |
|
258 | |||
259 | # Re-map keys for all filtered widgets. |
|
259 | # Re-map keys for all filtered widgets. | |
260 | key = event.key() |
|
260 | key = event.key() | |
261 | if self._control_key_down(event.modifiers()) and \ |
|
261 | if self._control_key_down(event.modifiers()) and \ | |
262 | key in self._ctrl_down_remap: |
|
262 | key in self._ctrl_down_remap: | |
263 | new_event = QtGui.QKeyEvent(QtCore.QEvent.KeyPress, |
|
263 | new_event = QtGui.QKeyEvent(QtCore.QEvent.KeyPress, | |
264 | self._ctrl_down_remap[key], |
|
264 | self._ctrl_down_remap[key], | |
265 | QtCore.Qt.NoModifier) |
|
265 | QtCore.Qt.NoModifier) | |
266 | QtGui.qApp.sendEvent(obj, new_event) |
|
266 | QtGui.qApp.sendEvent(obj, new_event) | |
267 | return True |
|
267 | return True | |
268 |
|
268 | |||
269 | elif obj == self._control: |
|
269 | elif obj == self._control: | |
270 | return self._event_filter_console_keypress(event) |
|
270 | return self._event_filter_console_keypress(event) | |
271 |
|
271 | |||
272 | elif obj == self._page_control: |
|
272 | elif obj == self._page_control: | |
273 | return self._event_filter_page_keypress(event) |
|
273 | return self._event_filter_page_keypress(event) | |
274 |
|
274 | |||
275 | # Make middle-click paste safe. |
|
275 | # Make middle-click paste safe. | |
276 | elif etype == QtCore.QEvent.MouseButtonRelease and \ |
|
276 | elif etype == QtCore.QEvent.MouseButtonRelease and \ | |
277 | event.button() == QtCore.Qt.MidButton and \ |
|
277 | event.button() == QtCore.Qt.MidButton and \ | |
278 | obj == self._control.viewport(): |
|
278 | obj == self._control.viewport(): | |
279 | cursor = self._control.cursorForPosition(event.pos()) |
|
279 | cursor = self._control.cursorForPosition(event.pos()) | |
280 | self._control.setTextCursor(cursor) |
|
280 | self._control.setTextCursor(cursor) | |
281 | self.paste(QtGui.QClipboard.Selection) |
|
281 | self.paste(QtGui.QClipboard.Selection) | |
282 | return True |
|
282 | return True | |
283 |
|
283 | |||
284 | # Manually adjust the scrollbars *after* a resize event is dispatched. |
|
284 | # Manually adjust the scrollbars *after* a resize event is dispatched. | |
285 | elif etype == QtCore.QEvent.Resize and not self._filter_resize: |
|
285 | elif etype == QtCore.QEvent.Resize and not self._filter_resize: | |
286 | self._filter_resize = True |
|
286 | self._filter_resize = True | |
287 | QtGui.qApp.sendEvent(obj, event) |
|
287 | QtGui.qApp.sendEvent(obj, event) | |
288 | self._adjust_scrollbars() |
|
288 | self._adjust_scrollbars() | |
289 | self._filter_resize = False |
|
289 | self._filter_resize = False | |
290 | return True |
|
290 | return True | |
291 |
|
291 | |||
292 | # Override shortcuts for all filtered widgets. |
|
292 | # Override shortcuts for all filtered widgets. | |
293 | elif etype == QtCore.QEvent.ShortcutOverride and \ |
|
293 | elif etype == QtCore.QEvent.ShortcutOverride and \ | |
294 | self.override_shortcuts and \ |
|
294 | self.override_shortcuts and \ | |
295 | self._control_key_down(event.modifiers()) and \ |
|
295 | self._control_key_down(event.modifiers()) and \ | |
296 | event.key() in self._shortcuts: |
|
296 | event.key() in self._shortcuts: | |
297 | event.accept() |
|
297 | event.accept() | |
298 |
|
298 | |||
299 | # Ensure that drags are safe. The problem is that the drag starting |
|
299 | # Ensure that drags are safe. The problem is that the drag starting | |
300 | # logic, which determines whether the drag is a Copy or Move, is locked |
|
300 | # logic, which determines whether the drag is a Copy or Move, is locked | |
301 | # down in QTextControl. If the widget is editable, which it must be if |
|
301 | # down in QTextControl. If the widget is editable, which it must be if | |
302 | # we're not executing, the drag will be a Move. The following hack |
|
302 | # we're not executing, the drag will be a Move. The following hack | |
303 | # prevents QTextControl from deleting the text by clearing the selection |
|
303 | # prevents QTextControl from deleting the text by clearing the selection | |
304 | # when a drag leave event originating from this widget is dispatched. |
|
304 | # when a drag leave event originating from this widget is dispatched. | |
305 | # The fact that we have to clear the user's selection is unfortunate, |
|
305 | # The fact that we have to clear the user's selection is unfortunate, | |
306 | # but the alternative--trying to prevent Qt from using its hardwired |
|
306 | # but the alternative--trying to prevent Qt from using its hardwired | |
307 | # drag logic and writing our own--is worse. |
|
307 | # drag logic and writing our own--is worse. | |
308 | elif etype == QtCore.QEvent.DragEnter and \ |
|
308 | elif etype == QtCore.QEvent.DragEnter and \ | |
309 | obj == self._control.viewport() and \ |
|
309 | obj == self._control.viewport() and \ | |
310 | event.source() == self._control.viewport(): |
|
310 | event.source() == self._control.viewport(): | |
311 | self._filter_drag = True |
|
311 | self._filter_drag = True | |
312 | elif etype == QtCore.QEvent.DragLeave and \ |
|
312 | elif etype == QtCore.QEvent.DragLeave and \ | |
313 | obj == self._control.viewport() and \ |
|
313 | obj == self._control.viewport() and \ | |
314 | self._filter_drag: |
|
314 | self._filter_drag: | |
315 | cursor = self._control.textCursor() |
|
315 | cursor = self._control.textCursor() | |
316 | cursor.clearSelection() |
|
316 | cursor.clearSelection() | |
317 | self._control.setTextCursor(cursor) |
|
317 | self._control.setTextCursor(cursor) | |
318 | self._filter_drag = False |
|
318 | self._filter_drag = False | |
319 |
|
319 | |||
320 | # Ensure that drops are safe. |
|
320 | # Ensure that drops are safe. | |
321 | elif etype == QtCore.QEvent.Drop and obj == self._control.viewport(): |
|
321 | elif etype == QtCore.QEvent.Drop and obj == self._control.viewport(): | |
322 | cursor = self._control.cursorForPosition(event.pos()) |
|
322 | cursor = self._control.cursorForPosition(event.pos()) | |
323 | if self._in_buffer(cursor.position()): |
|
323 | if self._in_buffer(cursor.position()): | |
324 | text = event.mimeData().text() |
|
324 | text = event.mimeData().text() | |
325 | self._insert_plain_text_into_buffer(cursor, text) |
|
325 | self._insert_plain_text_into_buffer(cursor, text) | |
326 |
|
326 | |||
327 | # Qt is expecting to get something here--drag and drop occurs in its |
|
327 | # Qt is expecting to get something here--drag and drop occurs in its | |
328 | # own event loop. Send a DragLeave event to end it. |
|
328 | # own event loop. Send a DragLeave event to end it. | |
329 | QtGui.qApp.sendEvent(obj, QtGui.QDragLeaveEvent()) |
|
329 | QtGui.qApp.sendEvent(obj, QtGui.QDragLeaveEvent()) | |
330 | return True |
|
330 | return True | |
331 |
|
331 | |||
332 | return super(ConsoleWidget, self).eventFilter(obj, event) |
|
332 | return super(ConsoleWidget, self).eventFilter(obj, event) | |
333 |
|
333 | |||
334 | #--------------------------------------------------------------------------- |
|
334 | #--------------------------------------------------------------------------- | |
335 | # 'QWidget' interface |
|
335 | # 'QWidget' interface | |
336 | #--------------------------------------------------------------------------- |
|
336 | #--------------------------------------------------------------------------- | |
337 |
|
337 | |||
338 | def sizeHint(self): |
|
338 | def sizeHint(self): | |
339 | """ Reimplemented to suggest a size that is 80 characters wide and |
|
339 | """ Reimplemented to suggest a size that is 80 characters wide and | |
340 | 25 lines high. |
|
340 | 25 lines high. | |
341 | """ |
|
341 | """ | |
342 | font_metrics = QtGui.QFontMetrics(self.font) |
|
342 | font_metrics = QtGui.QFontMetrics(self.font) | |
343 | margin = (self._control.frameWidth() + |
|
343 | margin = (self._control.frameWidth() + | |
344 | self._control.document().documentMargin()) * 2 |
|
344 | self._control.document().documentMargin()) * 2 | |
345 | style = self.style() |
|
345 | style = self.style() | |
346 | splitwidth = style.pixelMetric(QtGui.QStyle.PM_SplitterWidth) |
|
346 | splitwidth = style.pixelMetric(QtGui.QStyle.PM_SplitterWidth) | |
347 |
|
347 | |||
348 | # Note 1: Despite my best efforts to take the various margins into |
|
348 | # Note 1: Despite my best efforts to take the various margins into | |
349 | # account, the width is still coming out a bit too small, so we include |
|
349 | # account, the width is still coming out a bit too small, so we include | |
350 | # a fudge factor of one character here. |
|
350 | # a fudge factor of one character here. | |
351 | # Note 2: QFontMetrics.maxWidth is not used here or anywhere else due |
|
351 | # Note 2: QFontMetrics.maxWidth is not used here or anywhere else due | |
352 | # to a Qt bug on certain Mac OS systems where it returns 0. |
|
352 | # to a Qt bug on certain Mac OS systems where it returns 0. | |
353 | width = font_metrics.width(' ') * 81 + margin |
|
353 | width = font_metrics.width(' ') * 81 + margin | |
354 | width += style.pixelMetric(QtGui.QStyle.PM_ScrollBarExtent) |
|
354 | width += style.pixelMetric(QtGui.QStyle.PM_ScrollBarExtent) | |
355 | if self.paging == 'hsplit': |
|
355 | if self.paging == 'hsplit': | |
356 | width = width * 2 + splitwidth |
|
356 | width = width * 2 + splitwidth | |
357 |
|
357 | |||
358 | height = font_metrics.height() * 25 + margin |
|
358 | height = font_metrics.height() * 25 + margin | |
359 | if self.paging == 'vsplit': |
|
359 | if self.paging == 'vsplit': | |
360 | height = height * 2 + splitwidth |
|
360 | height = height * 2 + splitwidth | |
361 |
|
361 | |||
362 | return QtCore.QSize(width, height) |
|
362 | return QtCore.QSize(width, height) | |
363 |
|
363 | |||
364 | #--------------------------------------------------------------------------- |
|
364 | #--------------------------------------------------------------------------- | |
365 | # 'ConsoleWidget' public interface |
|
365 | # 'ConsoleWidget' public interface | |
366 | #--------------------------------------------------------------------------- |
|
366 | #--------------------------------------------------------------------------- | |
367 |
|
367 | |||
368 | def can_copy(self): |
|
368 | def can_copy(self): | |
369 | """ Returns whether text can be copied to the clipboard. |
|
369 | """ Returns whether text can be copied to the clipboard. | |
370 | """ |
|
370 | """ | |
371 | return self._control.textCursor().hasSelection() |
|
371 | return self._control.textCursor().hasSelection() | |
372 |
|
372 | |||
373 | def can_cut(self): |
|
373 | def can_cut(self): | |
374 | """ Returns whether text can be cut to the clipboard. |
|
374 | """ Returns whether text can be cut to the clipboard. | |
375 | """ |
|
375 | """ | |
376 | cursor = self._control.textCursor() |
|
376 | cursor = self._control.textCursor() | |
377 | return (cursor.hasSelection() and |
|
377 | return (cursor.hasSelection() and | |
378 | self._in_buffer(cursor.anchor()) and |
|
378 | self._in_buffer(cursor.anchor()) and | |
379 | self._in_buffer(cursor.position())) |
|
379 | self._in_buffer(cursor.position())) | |
380 |
|
380 | |||
381 | def can_paste(self): |
|
381 | def can_paste(self): | |
382 | """ Returns whether text can be pasted from the clipboard. |
|
382 | """ Returns whether text can be pasted from the clipboard. | |
383 | """ |
|
383 | """ | |
384 | if self._control.textInteractionFlags() & QtCore.Qt.TextEditable: |
|
384 | if self._control.textInteractionFlags() & QtCore.Qt.TextEditable: | |
385 | return bool(QtGui.QApplication.clipboard().text()) |
|
385 | return bool(QtGui.QApplication.clipboard().text()) | |
386 | return False |
|
386 | return False | |
387 |
|
387 | |||
388 | def clear(self, keep_input=True): |
|
388 | def clear(self, keep_input=True): | |
389 | """ Clear the console. |
|
389 | """ Clear the console. | |
390 |
|
390 | |||
391 | Parameters: |
|
391 | Parameters: | |
392 | ----------- |
|
392 | ----------- | |
393 | keep_input : bool, optional (default True) |
|
393 | keep_input : bool, optional (default True) | |
394 | If set, restores the old input buffer if a new prompt is written. |
|
394 | If set, restores the old input buffer if a new prompt is written. | |
395 | """ |
|
395 | """ | |
396 | if self._executing: |
|
396 | if self._executing: | |
397 | self._control.clear() |
|
397 | self._control.clear() | |
398 | else: |
|
398 | else: | |
399 | if keep_input: |
|
399 | if keep_input: | |
400 | input_buffer = self.input_buffer |
|
400 | input_buffer = self.input_buffer | |
401 | self._control.clear() |
|
401 | self._control.clear() | |
402 | self._show_prompt() |
|
402 | self._show_prompt() | |
403 | if keep_input: |
|
403 | if keep_input: | |
404 | self.input_buffer = input_buffer |
|
404 | self.input_buffer = input_buffer | |
405 |
|
405 | |||
406 | def copy(self): |
|
406 | def copy(self): | |
407 | """ Copy the currently selected text to the clipboard. |
|
407 | """ Copy the currently selected text to the clipboard. | |
408 | """ |
|
408 | """ | |
409 | self._control.copy() |
|
409 | self._control.copy() | |
410 |
|
410 | |||
411 | def cut(self): |
|
411 | def cut(self): | |
412 | """ Copy the currently selected text to the clipboard and delete it |
|
412 | """ Copy the currently selected text to the clipboard and delete it | |
413 | if it's inside the input buffer. |
|
413 | if it's inside the input buffer. | |
414 | """ |
|
414 | """ | |
415 | self.copy() |
|
415 | self.copy() | |
416 | if self.can_cut(): |
|
416 | if self.can_cut(): | |
417 | self._control.textCursor().removeSelectedText() |
|
417 | self._control.textCursor().removeSelectedText() | |
418 |
|
418 | |||
419 | def execute(self, source=None, hidden=False, interactive=False): |
|
419 | def execute(self, source=None, hidden=False, interactive=False): | |
420 | """ Executes source or the input buffer, possibly prompting for more |
|
420 | """ Executes source or the input buffer, possibly prompting for more | |
421 | input. |
|
421 | input. | |
422 |
|
422 | |||
423 | Parameters: |
|
423 | Parameters: | |
424 | ----------- |
|
424 | ----------- | |
425 | source : str, optional |
|
425 | source : str, optional | |
426 |
|
426 | |||
427 | The source to execute. If not specified, the input buffer will be |
|
427 | The source to execute. If not specified, the input buffer will be | |
428 | used. If specified and 'hidden' is False, the input buffer will be |
|
428 | used. If specified and 'hidden' is False, the input buffer will be | |
429 | replaced with the source before execution. |
|
429 | replaced with the source before execution. | |
430 |
|
430 | |||
431 | hidden : bool, optional (default False) |
|
431 | hidden : bool, optional (default False) | |
432 |
|
432 | |||
433 | If set, no output will be shown and the prompt will not be modified. |
|
433 | If set, no output will be shown and the prompt will not be modified. | |
434 | In other words, it will be completely invisible to the user that |
|
434 | In other words, it will be completely invisible to the user that | |
435 | an execution has occurred. |
|
435 | an execution has occurred. | |
436 |
|
436 | |||
437 | interactive : bool, optional (default False) |
|
437 | interactive : bool, optional (default False) | |
438 |
|
438 | |||
439 | Whether the console is to treat the source as having been manually |
|
439 | Whether the console is to treat the source as having been manually | |
440 | entered by the user. The effect of this parameter depends on the |
|
440 | entered by the user. The effect of this parameter depends on the | |
441 | subclass implementation. |
|
441 | subclass implementation. | |
442 |
|
442 | |||
443 | Raises: |
|
443 | Raises: | |
444 | ------- |
|
444 | ------- | |
445 | RuntimeError |
|
445 | RuntimeError | |
446 | If incomplete input is given and 'hidden' is True. In this case, |
|
446 | If incomplete input is given and 'hidden' is True. In this case, | |
447 | it is not possible to prompt for more input. |
|
447 | it is not possible to prompt for more input. | |
448 |
|
448 | |||
449 | Returns: |
|
449 | Returns: | |
450 | -------- |
|
450 | -------- | |
451 | A boolean indicating whether the source was executed. |
|
451 | A boolean indicating whether the source was executed. | |
452 | """ |
|
452 | """ | |
453 | # WARNING: The order in which things happen here is very particular, in |
|
453 | # WARNING: The order in which things happen here is very particular, in | |
454 | # large part because our syntax highlighting is fragile. If you change |
|
454 | # large part because our syntax highlighting is fragile. If you change | |
455 | # something, test carefully! |
|
455 | # something, test carefully! | |
456 |
|
456 | |||
457 | # Decide what to execute. |
|
457 | # Decide what to execute. | |
458 | if source is None: |
|
458 | if source is None: | |
459 | source = self.input_buffer |
|
459 | source = self.input_buffer | |
460 | if not hidden: |
|
460 | if not hidden: | |
461 | # A newline is appended later, but it should be considered part |
|
461 | # A newline is appended later, but it should be considered part | |
462 | # of the input buffer. |
|
462 | # of the input buffer. | |
463 | source += '\n' |
|
463 | source += '\n' | |
464 | elif not hidden: |
|
464 | elif not hidden: | |
465 | self.input_buffer = source |
|
465 | self.input_buffer = source | |
466 |
|
466 | |||
467 | # Execute the source or show a continuation prompt if it is incomplete. |
|
467 | # Execute the source or show a continuation prompt if it is incomplete. | |
468 | complete = self._is_complete(source, interactive) |
|
468 | complete = self._is_complete(source, interactive) | |
469 | if hidden: |
|
469 | if hidden: | |
470 | if complete: |
|
470 | if complete: | |
471 | self._execute(source, hidden) |
|
471 | self._execute(source, hidden) | |
472 | else: |
|
472 | else: | |
473 | error = 'Incomplete noninteractive input: "%s"' |
|
473 | error = 'Incomplete noninteractive input: "%s"' | |
474 | raise RuntimeError(error % source) |
|
474 | raise RuntimeError(error % source) | |
475 | else: |
|
475 | else: | |
476 | if complete: |
|
476 | if complete: | |
477 | self._append_plain_text('\n') |
|
477 | self._append_plain_text('\n') | |
478 | self._input_buffer_executing = self.input_buffer |
|
478 | self._input_buffer_executing = self.input_buffer | |
479 | self._executing = True |
|
479 | self._executing = True | |
480 | self._prompt_finished() |
|
480 | self._prompt_finished() | |
481 |
|
481 | |||
482 | # The maximum block count is only in effect during execution. |
|
482 | # The maximum block count is only in effect during execution. | |
483 | # This ensures that _prompt_pos does not become invalid due to |
|
483 | # This ensures that _prompt_pos does not become invalid due to | |
484 | # text truncation. |
|
484 | # text truncation. | |
485 | self._control.document().setMaximumBlockCount(self.buffer_size) |
|
485 | self._control.document().setMaximumBlockCount(self.buffer_size) | |
486 |
|
486 | |||
487 | # Setting a positive maximum block count will automatically |
|
487 | # Setting a positive maximum block count will automatically | |
488 | # disable the undo/redo history, but just to be safe: |
|
488 | # disable the undo/redo history, but just to be safe: | |
489 | self._control.setUndoRedoEnabled(False) |
|
489 | self._control.setUndoRedoEnabled(False) | |
490 |
|
490 | |||
491 | # Perform actual execution. |
|
491 | # Perform actual execution. | |
492 | self._execute(source, hidden) |
|
492 | self._execute(source, hidden) | |
493 |
|
493 | |||
494 | else: |
|
494 | else: | |
495 | # Do this inside an edit block so continuation prompts are |
|
495 | # Do this inside an edit block so continuation prompts are | |
496 | # removed seamlessly via undo/redo. |
|
496 | # removed seamlessly via undo/redo. | |
497 | cursor = self._get_end_cursor() |
|
497 | cursor = self._get_end_cursor() | |
498 | cursor.beginEditBlock() |
|
498 | cursor.beginEditBlock() | |
499 | cursor.insertText('\n') |
|
499 | cursor.insertText('\n') | |
500 | self._insert_continuation_prompt(cursor) |
|
500 | self._insert_continuation_prompt(cursor) | |
501 | cursor.endEditBlock() |
|
501 | cursor.endEditBlock() | |
502 |
|
502 | |||
503 | # Do not do this inside the edit block. It works as expected |
|
503 | # Do not do this inside the edit block. It works as expected | |
504 | # when using a QPlainTextEdit control, but does not have an |
|
504 | # when using a QPlainTextEdit control, but does not have an | |
505 | # effect when using a QTextEdit. I believe this is a Qt bug. |
|
505 | # effect when using a QTextEdit. I believe this is a Qt bug. | |
506 | self._control.moveCursor(QtGui.QTextCursor.End) |
|
506 | self._control.moveCursor(QtGui.QTextCursor.End) | |
507 |
|
507 | |||
508 | return complete |
|
508 | return complete | |
509 |
|
509 | |||
510 | def export_html(self): |
|
510 | def export_html(self): | |
511 | """ Shows a dialog to export HTML/XML in various formats. |
|
511 | """ Shows a dialog to export HTML/XML in various formats. | |
512 | """ |
|
512 | """ | |
513 | self._html_exporter.export() |
|
513 | self._html_exporter.export() | |
514 |
|
514 | |||
515 | def _get_input_buffer(self, force=False): |
|
515 | def _get_input_buffer(self, force=False): | |
516 | """ The text that the user has entered entered at the current prompt. |
|
516 | """ The text that the user has entered entered at the current prompt. | |
517 |
|
517 | |||
518 | If the console is currently executing, the text that is executing will |
|
518 | If the console is currently executing, the text that is executing will | |
519 | always be returned. |
|
519 | always be returned. | |
520 | """ |
|
520 | """ | |
521 | # If we're executing, the input buffer may not even exist anymore due to |
|
521 | # If we're executing, the input buffer may not even exist anymore due to | |
522 | # the limit imposed by 'buffer_size'. Therefore, we store it. |
|
522 | # the limit imposed by 'buffer_size'. Therefore, we store it. | |
523 | if self._executing and not force: |
|
523 | if self._executing and not force: | |
524 | return self._input_buffer_executing |
|
524 | return self._input_buffer_executing | |
525 |
|
525 | |||
526 | cursor = self._get_end_cursor() |
|
526 | cursor = self._get_end_cursor() | |
527 | cursor.setPosition(self._prompt_pos, QtGui.QTextCursor.KeepAnchor) |
|
527 | cursor.setPosition(self._prompt_pos, QtGui.QTextCursor.KeepAnchor) | |
528 | input_buffer = cursor.selection().toPlainText() |
|
528 | input_buffer = cursor.selection().toPlainText() | |
529 |
|
529 | |||
530 | # Strip out continuation prompts. |
|
530 | # Strip out continuation prompts. | |
531 | return input_buffer.replace('\n' + self._continuation_prompt, '\n') |
|
531 | return input_buffer.replace('\n' + self._continuation_prompt, '\n') | |
532 |
|
532 | |||
533 | def _set_input_buffer(self, string): |
|
533 | def _set_input_buffer(self, string): | |
534 | """ Sets the text in the input buffer. |
|
534 | """ Sets the text in the input buffer. | |
535 |
|
535 | |||
536 | If the console is currently executing, this call has no *immediate* |
|
536 | If the console is currently executing, this call has no *immediate* | |
537 | effect. When the execution is finished, the input buffer will be updated |
|
537 | effect. When the execution is finished, the input buffer will be updated | |
538 | appropriately. |
|
538 | appropriately. | |
539 | """ |
|
539 | """ | |
540 | # If we're executing, store the text for later. |
|
540 | # If we're executing, store the text for later. | |
541 | if self._executing: |
|
541 | if self._executing: | |
542 | self._input_buffer_pending = string |
|
542 | self._input_buffer_pending = string | |
543 | return |
|
543 | return | |
544 |
|
544 | |||
545 | # Remove old text. |
|
545 | # Remove old text. | |
546 | cursor = self._get_end_cursor() |
|
546 | cursor = self._get_end_cursor() | |
547 | cursor.beginEditBlock() |
|
547 | cursor.beginEditBlock() | |
548 | cursor.setPosition(self._prompt_pos, QtGui.QTextCursor.KeepAnchor) |
|
548 | cursor.setPosition(self._prompt_pos, QtGui.QTextCursor.KeepAnchor) | |
549 | cursor.removeSelectedText() |
|
549 | cursor.removeSelectedText() | |
550 |
|
550 | |||
551 | # Insert new text with continuation prompts. |
|
551 | # Insert new text with continuation prompts. | |
552 | self._insert_plain_text_into_buffer(self._get_prompt_cursor(), string) |
|
552 | self._insert_plain_text_into_buffer(self._get_prompt_cursor(), string) | |
553 | cursor.endEditBlock() |
|
553 | cursor.endEditBlock() | |
554 | self._control.moveCursor(QtGui.QTextCursor.End) |
|
554 | self._control.moveCursor(QtGui.QTextCursor.End) | |
555 |
|
555 | |||
556 | input_buffer = property(_get_input_buffer, _set_input_buffer) |
|
556 | input_buffer = property(_get_input_buffer, _set_input_buffer) | |
557 |
|
557 | |||
558 | def _get_font(self): |
|
558 | def _get_font(self): | |
559 | """ The base font being used by the ConsoleWidget. |
|
559 | """ The base font being used by the ConsoleWidget. | |
560 | """ |
|
560 | """ | |
561 | return self._control.document().defaultFont() |
|
561 | return self._control.document().defaultFont() | |
562 |
|
562 | |||
563 | def _set_font(self, font): |
|
563 | def _set_font(self, font): | |
564 | """ Sets the base font for the ConsoleWidget to the specified QFont. |
|
564 | """ Sets the base font for the ConsoleWidget to the specified QFont. | |
565 | """ |
|
565 | """ | |
566 | font_metrics = QtGui.QFontMetrics(font) |
|
566 | font_metrics = QtGui.QFontMetrics(font) | |
567 | self._control.setTabStopWidth(self.tab_width * font_metrics.width(' ')) |
|
567 | self._control.setTabStopWidth(self.tab_width * font_metrics.width(' ')) | |
568 |
|
568 | |||
569 | self._completion_widget.setFont(font) |
|
569 | self._completion_widget.setFont(font) | |
570 | self._control.document().setDefaultFont(font) |
|
570 | self._control.document().setDefaultFont(font) | |
571 | if self._page_control: |
|
571 | if self._page_control: | |
572 | self._page_control.document().setDefaultFont(font) |
|
572 | self._page_control.document().setDefaultFont(font) | |
573 |
|
573 | |||
574 | self.font_changed.emit(font) |
|
574 | self.font_changed.emit(font) | |
575 |
|
575 | |||
576 | font = property(_get_font, _set_font) |
|
576 | font = property(_get_font, _set_font) | |
577 |
|
577 | |||
578 | def paste(self, mode=QtGui.QClipboard.Clipboard): |
|
578 | def paste(self, mode=QtGui.QClipboard.Clipboard): | |
579 | """ Paste the contents of the clipboard into the input region. |
|
579 | """ Paste the contents of the clipboard into the input region. | |
580 |
|
580 | |||
581 | Parameters: |
|
581 | Parameters: | |
582 | ----------- |
|
582 | ----------- | |
583 | mode : QClipboard::Mode, optional [default QClipboard::Clipboard] |
|
583 | mode : QClipboard::Mode, optional [default QClipboard::Clipboard] | |
584 |
|
584 | |||
585 | Controls which part of the system clipboard is used. This can be |
|
585 | Controls which part of the system clipboard is used. This can be | |
586 | used to access the selection clipboard in X11 and the Find buffer |
|
586 | used to access the selection clipboard in X11 and the Find buffer | |
587 | in Mac OS. By default, the regular clipboard is used. |
|
587 | in Mac OS. By default, the regular clipboard is used. | |
588 | """ |
|
588 | """ | |
589 | if self._control.textInteractionFlags() & QtCore.Qt.TextEditable: |
|
589 | if self._control.textInteractionFlags() & QtCore.Qt.TextEditable: | |
590 | # Make sure the paste is safe. |
|
590 | # Make sure the paste is safe. | |
591 | self._keep_cursor_in_buffer() |
|
591 | self._keep_cursor_in_buffer() | |
592 | cursor = self._control.textCursor() |
|
592 | cursor = self._control.textCursor() | |
593 |
|
593 | |||
594 | # Remove any trailing newline, which confuses the GUI and forces the |
|
594 | # Remove any trailing newline, which confuses the GUI and forces the | |
595 | # user to backspace. |
|
595 | # user to backspace. | |
596 | text = QtGui.QApplication.clipboard().text(mode).rstrip() |
|
596 | text = QtGui.QApplication.clipboard().text(mode).rstrip() | |
597 | self._insert_plain_text_into_buffer(cursor, dedent(text)) |
|
597 | self._insert_plain_text_into_buffer(cursor, dedent(text)) | |
598 |
|
598 | |||
599 | def print_(self, printer = None): |
|
599 | def print_(self, printer = None): | |
600 | """ Print the contents of the ConsoleWidget to the specified QPrinter. |
|
600 | """ Print the contents of the ConsoleWidget to the specified QPrinter. | |
601 | """ |
|
601 | """ | |
602 | if (not printer): |
|
602 | if (not printer): | |
603 | printer = QtGui.QPrinter() |
|
603 | printer = QtGui.QPrinter() | |
604 | if(QtGui.QPrintDialog(printer).exec_() != QtGui.QDialog.Accepted): |
|
604 | if(QtGui.QPrintDialog(printer).exec_() != QtGui.QDialog.Accepted): | |
605 | return |
|
605 | return | |
606 | self._control.print_(printer) |
|
606 | self._control.print_(printer) | |
607 |
|
607 | |||
608 | def prompt_to_top(self): |
|
608 | def prompt_to_top(self): | |
609 | """ Moves the prompt to the top of the viewport. |
|
609 | """ Moves the prompt to the top of the viewport. | |
610 | """ |
|
610 | """ | |
611 | if not self._executing: |
|
611 | if not self._executing: | |
612 | prompt_cursor = self._get_prompt_cursor() |
|
612 | prompt_cursor = self._get_prompt_cursor() | |
613 | if self._get_cursor().blockNumber() < prompt_cursor.blockNumber(): |
|
613 | if self._get_cursor().blockNumber() < prompt_cursor.blockNumber(): | |
614 | self._set_cursor(prompt_cursor) |
|
614 | self._set_cursor(prompt_cursor) | |
615 | self._set_top_cursor(prompt_cursor) |
|
615 | self._set_top_cursor(prompt_cursor) | |
616 |
|
616 | |||
617 | def redo(self): |
|
617 | def redo(self): | |
618 | """ Redo the last operation. If there is no operation to redo, nothing |
|
618 | """ Redo the last operation. If there is no operation to redo, nothing | |
619 | happens. |
|
619 | happens. | |
620 | """ |
|
620 | """ | |
621 | self._control.redo() |
|
621 | self._control.redo() | |
622 |
|
622 | |||
623 | def reset_font(self): |
|
623 | def reset_font(self): | |
624 | """ Sets the font to the default fixed-width font for this platform. |
|
624 | """ Sets the font to the default fixed-width font for this platform. | |
625 | """ |
|
625 | """ | |
626 | if sys.platform == 'win32': |
|
626 | if sys.platform == 'win32': | |
627 | # Consolas ships with Vista/Win7, fallback to Courier if needed |
|
627 | # Consolas ships with Vista/Win7, fallback to Courier if needed | |
628 | fallback = 'Courier' |
|
628 | fallback = 'Courier' | |
629 | elif sys.platform == 'darwin': |
|
629 | elif sys.platform == 'darwin': | |
630 | # OSX always has Monaco |
|
630 | # OSX always has Monaco | |
631 | fallback = 'Monaco' |
|
631 | fallback = 'Monaco' | |
632 | else: |
|
632 | else: | |
633 | # Monospace should always exist |
|
633 | # Monospace should always exist | |
634 | fallback = 'Monospace' |
|
634 | fallback = 'Monospace' | |
635 | font = get_font(self.font_family, fallback) |
|
635 | font = get_font(self.font_family, fallback) | |
636 | if self.font_size: |
|
636 | if self.font_size: | |
637 | font.setPointSize(self.font_size) |
|
637 | font.setPointSize(self.font_size) | |
638 | else: |
|
638 | else: | |
639 | font.setPointSize(QtGui.qApp.font().pointSize()) |
|
639 | font.setPointSize(QtGui.qApp.font().pointSize()) | |
640 | font.setStyleHint(QtGui.QFont.TypeWriter) |
|
640 | font.setStyleHint(QtGui.QFont.TypeWriter) | |
641 | self._set_font(font) |
|
641 | self._set_font(font) | |
642 |
|
642 | |||
643 | def change_font_size(self, delta): |
|
643 | def change_font_size(self, delta): | |
644 | """Change the font size by the specified amount (in points). |
|
644 | """Change the font size by the specified amount (in points). | |
645 | """ |
|
645 | """ | |
646 | font = self.font |
|
646 | font = self.font | |
647 | size = max(font.pointSize() + delta, 1) # minimum 1 point |
|
647 | size = max(font.pointSize() + delta, 1) # minimum 1 point | |
648 | font.setPointSize(size) |
|
648 | font.setPointSize(size) | |
649 | self._set_font(font) |
|
649 | self._set_font(font) | |
650 |
|
650 | |||
651 | def select_all(self): |
|
651 | def select_all(self): | |
652 | """ Selects all the text in the buffer. |
|
652 | """ Selects all the text in the buffer. | |
653 | """ |
|
653 | """ | |
654 | self._control.selectAll() |
|
654 | self._control.selectAll() | |
655 |
|
655 | |||
656 | def _get_tab_width(self): |
|
656 | def _get_tab_width(self): | |
657 | """ The width (in terms of space characters) for tab characters. |
|
657 | """ The width (in terms of space characters) for tab characters. | |
658 | """ |
|
658 | """ | |
659 | return self._tab_width |
|
659 | return self._tab_width | |
660 |
|
660 | |||
661 | def _set_tab_width(self, tab_width): |
|
661 | def _set_tab_width(self, tab_width): | |
662 | """ Sets the width (in terms of space characters) for tab characters. |
|
662 | """ Sets the width (in terms of space characters) for tab characters. | |
663 | """ |
|
663 | """ | |
664 | font_metrics = QtGui.QFontMetrics(self.font) |
|
664 | font_metrics = QtGui.QFontMetrics(self.font) | |
665 | self._control.setTabStopWidth(tab_width * font_metrics.width(' ')) |
|
665 | self._control.setTabStopWidth(tab_width * font_metrics.width(' ')) | |
666 |
|
666 | |||
667 | self._tab_width = tab_width |
|
667 | self._tab_width = tab_width | |
668 |
|
668 | |||
669 | tab_width = property(_get_tab_width, _set_tab_width) |
|
669 | tab_width = property(_get_tab_width, _set_tab_width) | |
670 |
|
670 | |||
671 | def undo(self): |
|
671 | def undo(self): | |
672 | """ Undo the last operation. If there is no operation to undo, nothing |
|
672 | """ Undo the last operation. If there is no operation to undo, nothing | |
673 | happens. |
|
673 | happens. | |
674 | """ |
|
674 | """ | |
675 | self._control.undo() |
|
675 | self._control.undo() | |
676 |
|
676 | |||
677 | #--------------------------------------------------------------------------- |
|
677 | #--------------------------------------------------------------------------- | |
678 | # 'ConsoleWidget' abstract interface |
|
678 | # 'ConsoleWidget' abstract interface | |
679 | #--------------------------------------------------------------------------- |
|
679 | #--------------------------------------------------------------------------- | |
680 |
|
680 | |||
681 | def _is_complete(self, source, interactive): |
|
681 | def _is_complete(self, source, interactive): | |
682 | """ Returns whether 'source' can be executed. When triggered by an |
|
682 | """ Returns whether 'source' can be executed. When triggered by an | |
683 | Enter/Return key press, 'interactive' is True; otherwise, it is |
|
683 | Enter/Return key press, 'interactive' is True; otherwise, it is | |
684 | False. |
|
684 | False. | |
685 | """ |
|
685 | """ | |
686 | raise NotImplementedError |
|
686 | raise NotImplementedError | |
687 |
|
687 | |||
688 | def _execute(self, source, hidden): |
|
688 | def _execute(self, source, hidden): | |
689 | """ Execute 'source'. If 'hidden', do not show any output. |
|
689 | """ Execute 'source'. If 'hidden', do not show any output. | |
690 | """ |
|
690 | """ | |
691 | raise NotImplementedError |
|
691 | raise NotImplementedError | |
692 |
|
692 | |||
693 | def _prompt_started_hook(self): |
|
693 | def _prompt_started_hook(self): | |
694 | """ Called immediately after a new prompt is displayed. |
|
694 | """ Called immediately after a new prompt is displayed. | |
695 | """ |
|
695 | """ | |
696 | pass |
|
696 | pass | |
697 |
|
697 | |||
698 | def _prompt_finished_hook(self): |
|
698 | def _prompt_finished_hook(self): | |
699 | """ Called immediately after a prompt is finished, i.e. when some input |
|
699 | """ Called immediately after a prompt is finished, i.e. when some input | |
700 | will be processed and a new prompt displayed. |
|
700 | will be processed and a new prompt displayed. | |
701 | """ |
|
701 | """ | |
702 | pass |
|
702 | pass | |
703 |
|
703 | |||
704 | def _up_pressed(self, shift_modifier): |
|
704 | def _up_pressed(self, shift_modifier): | |
705 | """ Called when the up key is pressed. Returns whether to continue |
|
705 | """ Called when the up key is pressed. Returns whether to continue | |
706 | processing the event. |
|
706 | processing the event. | |
707 | """ |
|
707 | """ | |
708 | return True |
|
708 | return True | |
709 |
|
709 | |||
710 | def _down_pressed(self, shift_modifier): |
|
710 | def _down_pressed(self, shift_modifier): | |
711 | """ Called when the down key is pressed. Returns whether to continue |
|
711 | """ Called when the down key is pressed. Returns whether to continue | |
712 | processing the event. |
|
712 | processing the event. | |
713 | """ |
|
713 | """ | |
714 | return True |
|
714 | return True | |
715 |
|
715 | |||
716 | def _tab_pressed(self): |
|
716 | def _tab_pressed(self): | |
717 | """ Called when the tab key is pressed. Returns whether to continue |
|
717 | """ Called when the tab key is pressed. Returns whether to continue | |
718 | processing the event. |
|
718 | processing the event. | |
719 | """ |
|
719 | """ | |
720 | return False |
|
720 | return False | |
721 |
|
721 | |||
722 | #-------------------------------------------------------------------------- |
|
722 | #-------------------------------------------------------------------------- | |
723 | # 'ConsoleWidget' protected interface |
|
723 | # 'ConsoleWidget' protected interface | |
724 | #-------------------------------------------------------------------------- |
|
724 | #-------------------------------------------------------------------------- | |
725 |
|
725 | |||
726 | def _append_custom(self, insert, input, before_prompt=False): |
|
726 | def _append_custom(self, insert, input, before_prompt=False): | |
727 | """ A low-level method for appending content to the end of the buffer. |
|
727 | """ A low-level method for appending content to the end of the buffer. | |
728 |
|
728 | |||
729 | If 'before_prompt' is enabled, the content will be inserted before the |
|
729 | If 'before_prompt' is enabled, the content will be inserted before the | |
730 | current prompt, if there is one. |
|
730 | current prompt, if there is one. | |
731 | """ |
|
731 | """ | |
732 | # Determine where to insert the content. |
|
732 | # Determine where to insert the content. | |
733 | cursor = self._control.textCursor() |
|
733 | cursor = self._control.textCursor() | |
734 | if before_prompt and not self._executing: |
|
734 | if before_prompt and not self._executing: | |
735 | cursor.setPosition(self._append_before_prompt_pos) |
|
735 | cursor.setPosition(self._append_before_prompt_pos) | |
736 | else: |
|
736 | else: | |
737 | cursor.movePosition(QtGui.QTextCursor.End) |
|
737 | cursor.movePosition(QtGui.QTextCursor.End) | |
738 | start_pos = cursor.position() |
|
738 | start_pos = cursor.position() | |
739 |
|
739 | |||
740 | # Perform the insertion. |
|
740 | # Perform the insertion. | |
741 | result = insert(cursor, input) |
|
741 | result = insert(cursor, input) | |
742 |
|
742 | |||
743 | # Adjust the prompt position if we have inserted before it. This is safe |
|
743 | # Adjust the prompt position if we have inserted before it. This is safe | |
744 | # because buffer truncation is disabled when not executing. |
|
744 | # because buffer truncation is disabled when not executing. | |
745 | if before_prompt and not self._executing: |
|
745 | if before_prompt and not self._executing: | |
746 | diff = cursor.position() - start_pos |
|
746 | diff = cursor.position() - start_pos | |
747 | self._append_before_prompt_pos += diff |
|
747 | self._append_before_prompt_pos += diff | |
748 | self._prompt_pos += diff |
|
748 | self._prompt_pos += diff | |
749 |
|
749 | |||
750 | return result |
|
750 | return result | |
751 |
|
751 | |||
752 | def _append_html(self, html, before_prompt=False): |
|
752 | def _append_html(self, html, before_prompt=False): | |
753 | """ Appends HTML at the end of the console buffer. |
|
753 | """ Appends HTML at the end of the console buffer. | |
754 | """ |
|
754 | """ | |
755 | self._append_custom(self._insert_html, html, before_prompt) |
|
755 | self._append_custom(self._insert_html, html, before_prompt) | |
756 |
|
756 | |||
757 | def _append_html_fetching_plain_text(self, html, before_prompt=False): |
|
757 | def _append_html_fetching_plain_text(self, html, before_prompt=False): | |
758 | """ Appends HTML, then returns the plain text version of it. |
|
758 | """ Appends HTML, then returns the plain text version of it. | |
759 | """ |
|
759 | """ | |
760 | return self._append_custom(self._insert_html_fetching_plain_text, |
|
760 | return self._append_custom(self._insert_html_fetching_plain_text, | |
761 | html, before_prompt) |
|
761 | html, before_prompt) | |
762 |
|
762 | |||
763 | def _append_plain_text(self, text, before_prompt=False): |
|
763 | def _append_plain_text(self, text, before_prompt=False): | |
764 | """ Appends plain text, processing ANSI codes if enabled. |
|
764 | """ Appends plain text, processing ANSI codes if enabled. | |
765 | """ |
|
765 | """ | |
766 | self._append_custom(self._insert_plain_text, text, before_prompt) |
|
766 | self._append_custom(self._insert_plain_text, text, before_prompt) | |
767 |
|
767 | |||
768 | def _cancel_text_completion(self): |
|
768 | def _cancel_text_completion(self): | |
769 | """ If text completion is progress, cancel it. |
|
769 | """ If text completion is progress, cancel it. | |
770 | """ |
|
770 | """ | |
771 | if self._text_completing_pos: |
|
771 | if self._text_completing_pos: | |
772 | self._clear_temporary_buffer() |
|
772 | self._clear_temporary_buffer() | |
773 | self._text_completing_pos = 0 |
|
773 | self._text_completing_pos = 0 | |
774 |
|
774 | |||
775 | def _clear_temporary_buffer(self): |
|
775 | def _clear_temporary_buffer(self): | |
776 | """ Clears the "temporary text" buffer, i.e. all the text following |
|
776 | """ Clears the "temporary text" buffer, i.e. all the text following | |
777 | the prompt region. |
|
777 | the prompt region. | |
778 | """ |
|
778 | """ | |
779 | # Select and remove all text below the input buffer. |
|
779 | # Select and remove all text below the input buffer. | |
780 | cursor = self._get_prompt_cursor() |
|
780 | cursor = self._get_prompt_cursor() | |
781 | prompt = self._continuation_prompt.lstrip() |
|
781 | prompt = self._continuation_prompt.lstrip() | |
782 | while cursor.movePosition(QtGui.QTextCursor.NextBlock): |
|
782 | while cursor.movePosition(QtGui.QTextCursor.NextBlock): | |
783 | temp_cursor = QtGui.QTextCursor(cursor) |
|
783 | temp_cursor = QtGui.QTextCursor(cursor) | |
784 | temp_cursor.select(QtGui.QTextCursor.BlockUnderCursor) |
|
784 | temp_cursor.select(QtGui.QTextCursor.BlockUnderCursor) | |
785 | text = temp_cursor.selection().toPlainText().lstrip() |
|
785 | text = temp_cursor.selection().toPlainText().lstrip() | |
786 | if not text.startswith(prompt): |
|
786 | if not text.startswith(prompt): | |
787 | break |
|
787 | break | |
788 | else: |
|
788 | else: | |
789 | # We've reached the end of the input buffer and no text follows. |
|
789 | # We've reached the end of the input buffer and no text follows. | |
790 | return |
|
790 | return | |
791 | cursor.movePosition(QtGui.QTextCursor.Left) # Grab the newline. |
|
791 | cursor.movePosition(QtGui.QTextCursor.Left) # Grab the newline. | |
792 | cursor.movePosition(QtGui.QTextCursor.End, |
|
792 | cursor.movePosition(QtGui.QTextCursor.End, | |
793 | QtGui.QTextCursor.KeepAnchor) |
|
793 | QtGui.QTextCursor.KeepAnchor) | |
794 | cursor.removeSelectedText() |
|
794 | cursor.removeSelectedText() | |
795 |
|
795 | |||
796 | # After doing this, we have no choice but to clear the undo/redo |
|
796 | # After doing this, we have no choice but to clear the undo/redo | |
797 | # history. Otherwise, the text is not "temporary" at all, because it |
|
797 | # history. Otherwise, the text is not "temporary" at all, because it | |
798 | # can be recalled with undo/redo. Unfortunately, Qt does not expose |
|
798 | # can be recalled with undo/redo. Unfortunately, Qt does not expose | |
799 | # fine-grained control to the undo/redo system. |
|
799 | # fine-grained control to the undo/redo system. | |
800 | if self._control.isUndoRedoEnabled(): |
|
800 | if self._control.isUndoRedoEnabled(): | |
801 | self._control.setUndoRedoEnabled(False) |
|
801 | self._control.setUndoRedoEnabled(False) | |
802 | self._control.setUndoRedoEnabled(True) |
|
802 | self._control.setUndoRedoEnabled(True) | |
803 |
|
803 | |||
804 | def _complete_with_items(self, cursor, items): |
|
804 | def _complete_with_items(self, cursor, items): | |
805 | """ Performs completion with 'items' at the specified cursor location. |
|
805 | """ Performs completion with 'items' at the specified cursor location. | |
806 | """ |
|
806 | """ | |
807 | self._cancel_text_completion() |
|
807 | self._cancel_text_completion() | |
808 |
|
808 | |||
809 | if len(items) == 1: |
|
809 | if len(items) == 1: | |
810 | cursor.setPosition(self._control.textCursor().position(), |
|
810 | cursor.setPosition(self._control.textCursor().position(), | |
811 | QtGui.QTextCursor.KeepAnchor) |
|
811 | QtGui.QTextCursor.KeepAnchor) | |
812 | cursor.insertText(items[0]) |
|
812 | cursor.insertText(items[0]) | |
813 |
|
813 | |||
814 | elif len(items) > 1: |
|
814 | elif len(items) > 1: | |
815 | current_pos = self._control.textCursor().position() |
|
815 | current_pos = self._control.textCursor().position() | |
816 | prefix = commonprefix(items) |
|
816 | prefix = commonprefix(items) | |
817 | if prefix: |
|
817 | if prefix: | |
818 | cursor.setPosition(current_pos, QtGui.QTextCursor.KeepAnchor) |
|
818 | cursor.setPosition(current_pos, QtGui.QTextCursor.KeepAnchor) | |
819 | cursor.insertText(prefix) |
|
819 | cursor.insertText(prefix) | |
820 | current_pos = cursor.position() |
|
820 | current_pos = cursor.position() | |
821 |
|
821 | |||
822 | if self.gui_completion: |
|
822 | if self.gui_completion: | |
823 | cursor.movePosition(QtGui.QTextCursor.Left, n=len(prefix)) |
|
823 | cursor.movePosition(QtGui.QTextCursor.Left, n=len(prefix)) | |
824 | self._completion_widget.show_items(cursor, items) |
|
824 | self._completion_widget.show_items(cursor, items) | |
825 | else: |
|
825 | else: | |
826 | cursor.beginEditBlock() |
|
826 | cursor.beginEditBlock() | |
827 | self._append_plain_text('\n') |
|
827 | self._append_plain_text('\n') | |
828 | self._page(self._format_as_columns(items)) |
|
828 | self._page(self._format_as_columns(items)) | |
829 | cursor.endEditBlock() |
|
829 | cursor.endEditBlock() | |
830 |
|
830 | |||
831 | cursor.setPosition(current_pos) |
|
831 | cursor.setPosition(current_pos) | |
832 | self._control.moveCursor(QtGui.QTextCursor.End) |
|
832 | self._control.moveCursor(QtGui.QTextCursor.End) | |
833 | self._control.setTextCursor(cursor) |
|
833 | self._control.setTextCursor(cursor) | |
834 | self._text_completing_pos = current_pos |
|
834 | self._text_completing_pos = current_pos | |
835 |
|
835 | |||
836 | def _context_menu_make(self, pos): |
|
836 | def _context_menu_make(self, pos): | |
837 | """ Creates a context menu for the given QPoint (in widget coordinates). |
|
837 | """ Creates a context menu for the given QPoint (in widget coordinates). | |
838 | """ |
|
838 | """ | |
839 | menu = QtGui.QMenu(self) |
|
839 | menu = QtGui.QMenu(self) | |
840 |
|
840 | |||
841 | cut_action = menu.addAction('Cut', self.cut) |
|
841 | cut_action = menu.addAction('Cut', self.cut) | |
842 | cut_action.setEnabled(self.can_cut()) |
|
842 | cut_action.setEnabled(self.can_cut()) | |
843 | cut_action.setShortcut(QtGui.QKeySequence.Cut) |
|
843 | cut_action.setShortcut(QtGui.QKeySequence.Cut) | |
844 |
|
844 | |||
845 | copy_action = menu.addAction('Copy', self.copy) |
|
845 | copy_action = menu.addAction('Copy', self.copy) | |
846 | copy_action.setEnabled(self.can_copy()) |
|
846 | copy_action.setEnabled(self.can_copy()) | |
847 | copy_action.setShortcut(QtGui.QKeySequence.Copy) |
|
847 | copy_action.setShortcut(QtGui.QKeySequence.Copy) | |
848 |
|
848 | |||
849 | paste_action = menu.addAction('Paste', self.paste) |
|
849 | paste_action = menu.addAction('Paste', self.paste) | |
850 | paste_action.setEnabled(self.can_paste()) |
|
850 | paste_action.setEnabled(self.can_paste()) | |
851 | paste_action.setShortcut(QtGui.QKeySequence.Paste) |
|
851 | paste_action.setShortcut(QtGui.QKeySequence.Paste) | |
852 |
|
852 | |||
853 | menu.addSeparator() |
|
853 | menu.addSeparator() | |
854 | menu.addAction(self._select_all_action) |
|
854 | menu.addAction(self._select_all_action) | |
855 |
|
855 | |||
856 | menu.addSeparator() |
|
856 | menu.addSeparator() | |
857 | menu.addAction(self._export_action) |
|
857 | menu.addAction(self._export_action) | |
858 | menu.addAction(self._print_action) |
|
858 | menu.addAction(self._print_action) | |
859 |
|
859 | |||
860 | return menu |
|
860 | return menu | |
861 |
|
861 | |||
862 | def _control_key_down(self, modifiers, include_command=False): |
|
862 | def _control_key_down(self, modifiers, include_command=False): | |
863 | """ Given a KeyboardModifiers flags object, return whether the Control |
|
863 | """ Given a KeyboardModifiers flags object, return whether the Control | |
864 | key is down. |
|
864 | key is down. | |
865 |
|
865 | |||
866 | Parameters: |
|
866 | Parameters: | |
867 | ----------- |
|
867 | ----------- | |
868 | include_command : bool, optional (default True) |
|
868 | include_command : bool, optional (default True) | |
869 | Whether to treat the Command key as a (mutually exclusive) synonym |
|
869 | Whether to treat the Command key as a (mutually exclusive) synonym | |
870 | for Control when in Mac OS. |
|
870 | for Control when in Mac OS. | |
871 | """ |
|
871 | """ | |
872 | # Note that on Mac OS, ControlModifier corresponds to the Command key |
|
872 | # Note that on Mac OS, ControlModifier corresponds to the Command key | |
873 | # while MetaModifier corresponds to the Control key. |
|
873 | # while MetaModifier corresponds to the Control key. | |
874 | if sys.platform == 'darwin': |
|
874 | if sys.platform == 'darwin': | |
875 | down = include_command and (modifiers & QtCore.Qt.ControlModifier) |
|
875 | down = include_command and (modifiers & QtCore.Qt.ControlModifier) | |
876 | return bool(down) ^ bool(modifiers & QtCore.Qt.MetaModifier) |
|
876 | return bool(down) ^ bool(modifiers & QtCore.Qt.MetaModifier) | |
877 | else: |
|
877 | else: | |
878 | return bool(modifiers & QtCore.Qt.ControlModifier) |
|
878 | return bool(modifiers & QtCore.Qt.ControlModifier) | |
879 |
|
879 | |||
880 | def _create_control(self): |
|
880 | def _create_control(self): | |
881 | """ Creates and connects the underlying text widget. |
|
881 | """ Creates and connects the underlying text widget. | |
882 | """ |
|
882 | """ | |
883 | # Create the underlying control. |
|
883 | # Create the underlying control. | |
884 | if self.kind == 'plain': |
|
884 | if self.kind == 'plain': | |
885 | control = QtGui.QPlainTextEdit() |
|
885 | control = QtGui.QPlainTextEdit() | |
886 | elif self.kind == 'rich': |
|
886 | elif self.kind == 'rich': | |
887 | control = QtGui.QTextEdit() |
|
887 | control = QtGui.QTextEdit() | |
888 | control.setAcceptRichText(False) |
|
888 | control.setAcceptRichText(False) | |
889 |
|
889 | |||
890 | # Install event filters. The filter on the viewport is needed for |
|
890 | # Install event filters. The filter on the viewport is needed for | |
891 | # mouse events and drag events. |
|
891 | # mouse events and drag events. | |
892 | control.installEventFilter(self) |
|
892 | control.installEventFilter(self) | |
893 | control.viewport().installEventFilter(self) |
|
893 | control.viewport().installEventFilter(self) | |
894 |
|
894 | |||
895 | # Connect signals. |
|
895 | # Connect signals. | |
896 | control.cursorPositionChanged.connect(self._cursor_position_changed) |
|
896 | control.cursorPositionChanged.connect(self._cursor_position_changed) | |
897 | control.customContextMenuRequested.connect( |
|
897 | control.customContextMenuRequested.connect( | |
898 | self._custom_context_menu_requested) |
|
898 | self._custom_context_menu_requested) | |
899 | control.copyAvailable.connect(self.copy_available) |
|
899 | control.copyAvailable.connect(self.copy_available) | |
900 | control.redoAvailable.connect(self.redo_available) |
|
900 | control.redoAvailable.connect(self.redo_available) | |
901 | control.undoAvailable.connect(self.undo_available) |
|
901 | control.undoAvailable.connect(self.undo_available) | |
902 |
|
902 | |||
903 | # Hijack the document size change signal to prevent Qt from adjusting |
|
903 | # Hijack the document size change signal to prevent Qt from adjusting | |
904 | # the viewport's scrollbar. We are relying on an implementation detail |
|
904 | # the viewport's scrollbar. We are relying on an implementation detail | |
905 | # of Q(Plain)TextEdit here, which is potentially dangerous, but without |
|
905 | # of Q(Plain)TextEdit here, which is potentially dangerous, but without | |
906 | # this functionality we cannot create a nice terminal interface. |
|
906 | # this functionality we cannot create a nice terminal interface. | |
907 | layout = control.document().documentLayout() |
|
907 | layout = control.document().documentLayout() | |
908 | layout.documentSizeChanged.disconnect() |
|
908 | layout.documentSizeChanged.disconnect() | |
909 | layout.documentSizeChanged.connect(self._adjust_scrollbars) |
|
909 | layout.documentSizeChanged.connect(self._adjust_scrollbars) | |
910 |
|
910 | |||
911 | # Configure the control. |
|
911 | # Configure the control. | |
912 | control.setAttribute(QtCore.Qt.WA_InputMethodEnabled, True) |
|
912 | control.setAttribute(QtCore.Qt.WA_InputMethodEnabled, True) | |
913 | control.setContextMenuPolicy(QtCore.Qt.CustomContextMenu) |
|
913 | control.setContextMenuPolicy(QtCore.Qt.CustomContextMenu) | |
914 | control.setReadOnly(True) |
|
914 | control.setReadOnly(True) | |
915 | control.setUndoRedoEnabled(False) |
|
915 | control.setUndoRedoEnabled(False) | |
916 | control.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOn) |
|
916 | control.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOn) | |
917 | return control |
|
917 | return control | |
918 |
|
918 | |||
919 | def _create_page_control(self): |
|
919 | def _create_page_control(self): | |
920 | """ Creates and connects the underlying paging widget. |
|
920 | """ Creates and connects the underlying paging widget. | |
921 | """ |
|
921 | """ | |
922 | if self.kind == 'plain': |
|
922 | if self.kind == 'plain': | |
923 | control = QtGui.QPlainTextEdit() |
|
923 | control = QtGui.QPlainTextEdit() | |
924 | elif self.kind == 'rich': |
|
924 | elif self.kind == 'rich': | |
925 | control = QtGui.QTextEdit() |
|
925 | control = QtGui.QTextEdit() | |
926 | control.installEventFilter(self) |
|
926 | control.installEventFilter(self) | |
927 | control.setReadOnly(True) |
|
927 | control.setReadOnly(True) | |
928 | control.setUndoRedoEnabled(False) |
|
928 | control.setUndoRedoEnabled(False) | |
929 | control.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOn) |
|
929 | control.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOn) | |
930 | return control |
|
930 | return control | |
931 |
|
931 | |||
932 | def _event_filter_console_keypress(self, event): |
|
932 | def _event_filter_console_keypress(self, event): | |
933 | """ Filter key events for the underlying text widget to create a |
|
933 | """ Filter key events for the underlying text widget to create a | |
934 | console-like interface. |
|
934 | console-like interface. | |
935 | """ |
|
935 | """ | |
936 | intercepted = False |
|
936 | intercepted = False | |
937 | cursor = self._control.textCursor() |
|
937 | cursor = self._control.textCursor() | |
938 | position = cursor.position() |
|
938 | position = cursor.position() | |
939 | key = event.key() |
|
939 | key = event.key() | |
940 | ctrl_down = self._control_key_down(event.modifiers()) |
|
940 | ctrl_down = self._control_key_down(event.modifiers()) | |
941 | alt_down = event.modifiers() & QtCore.Qt.AltModifier |
|
941 | alt_down = event.modifiers() & QtCore.Qt.AltModifier | |
942 | shift_down = event.modifiers() & QtCore.Qt.ShiftModifier |
|
942 | shift_down = event.modifiers() & QtCore.Qt.ShiftModifier | |
943 |
|
943 | |||
944 | #------ Special sequences ---------------------------------------------- |
|
944 | #------ Special sequences ---------------------------------------------- | |
945 |
|
945 | |||
946 | if event.matches(QtGui.QKeySequence.Copy): |
|
946 | if event.matches(QtGui.QKeySequence.Copy): | |
947 | self.copy() |
|
947 | self.copy() | |
948 | intercepted = True |
|
948 | intercepted = True | |
949 |
|
949 | |||
950 | elif event.matches(QtGui.QKeySequence.Cut): |
|
950 | elif event.matches(QtGui.QKeySequence.Cut): | |
951 | self.cut() |
|
951 | self.cut() | |
952 | intercepted = True |
|
952 | intercepted = True | |
953 |
|
953 | |||
954 | elif event.matches(QtGui.QKeySequence.Paste): |
|
954 | elif event.matches(QtGui.QKeySequence.Paste): | |
955 | self.paste() |
|
955 | self.paste() | |
956 | intercepted = True |
|
956 | intercepted = True | |
957 |
|
957 | |||
958 | #------ Special modifier logic ----------------------------------------- |
|
958 | #------ Special modifier logic ----------------------------------------- | |
959 |
|
959 | |||
960 | elif key in (QtCore.Qt.Key_Return, QtCore.Qt.Key_Enter): |
|
960 | elif key in (QtCore.Qt.Key_Return, QtCore.Qt.Key_Enter): | |
961 | intercepted = True |
|
961 | intercepted = True | |
962 |
|
962 | |||
963 | # Special handling when tab completing in text mode. |
|
963 | # Special handling when tab completing in text mode. | |
964 | self._cancel_text_completion() |
|
964 | self._cancel_text_completion() | |
965 |
|
965 | |||
966 | if self._in_buffer(position): |
|
966 | if self._in_buffer(position): | |
967 | if self._reading: |
|
967 | if self._reading: | |
968 | self._append_plain_text('\n') |
|
968 | self._append_plain_text('\n') | |
969 | self._reading = False |
|
969 | self._reading = False | |
970 | if self._reading_callback: |
|
970 | if self._reading_callback: | |
971 | self._reading_callback() |
|
971 | self._reading_callback() | |
972 |
|
972 | |||
973 | # If the input buffer is a single line or there is only |
|
973 | # If the input buffer is a single line or there is only | |
974 | # whitespace after the cursor, execute. Otherwise, split the |
|
974 | # whitespace after the cursor, execute. Otherwise, split the | |
975 | # line with a continuation prompt. |
|
975 | # line with a continuation prompt. | |
976 | elif not self._executing: |
|
976 | elif not self._executing: | |
977 | cursor.movePosition(QtGui.QTextCursor.End, |
|
977 | cursor.movePosition(QtGui.QTextCursor.End, | |
978 | QtGui.QTextCursor.KeepAnchor) |
|
978 | QtGui.QTextCursor.KeepAnchor) | |
979 | at_end = len(cursor.selectedText().strip()) == 0 |
|
979 | at_end = len(cursor.selectedText().strip()) == 0 | |
980 | single_line = (self._get_end_cursor().blockNumber() == |
|
980 | single_line = (self._get_end_cursor().blockNumber() == | |
981 | self._get_prompt_cursor().blockNumber()) |
|
981 | self._get_prompt_cursor().blockNumber()) | |
982 | if (at_end or shift_down or single_line) and not ctrl_down: |
|
982 | if (at_end or shift_down or single_line) and not ctrl_down: | |
983 | self.execute(interactive = not shift_down) |
|
983 | self.execute(interactive = not shift_down) | |
984 | else: |
|
984 | else: | |
985 | # Do this inside an edit block for clean undo/redo. |
|
985 | # Do this inside an edit block for clean undo/redo. | |
986 | cursor.beginEditBlock() |
|
986 | cursor.beginEditBlock() | |
987 | cursor.setPosition(position) |
|
987 | cursor.setPosition(position) | |
988 | cursor.insertText('\n') |
|
988 | cursor.insertText('\n') | |
989 | self._insert_continuation_prompt(cursor) |
|
989 | self._insert_continuation_prompt(cursor) | |
990 | cursor.endEditBlock() |
|
990 | cursor.endEditBlock() | |
991 |
|
991 | |||
992 | # Ensure that the whole input buffer is visible. |
|
992 | # Ensure that the whole input buffer is visible. | |
993 | # FIXME: This will not be usable if the input buffer is |
|
993 | # FIXME: This will not be usable if the input buffer is | |
994 | # taller than the console widget. |
|
994 | # taller than the console widget. | |
995 | self._control.moveCursor(QtGui.QTextCursor.End) |
|
995 | self._control.moveCursor(QtGui.QTextCursor.End) | |
996 | self._control.setTextCursor(cursor) |
|
996 | self._control.setTextCursor(cursor) | |
997 |
|
997 | |||
998 | #------ Control/Cmd modifier ------------------------------------------- |
|
998 | #------ Control/Cmd modifier ------------------------------------------- | |
999 |
|
999 | |||
1000 | elif ctrl_down: |
|
1000 | elif ctrl_down: | |
1001 | if key == QtCore.Qt.Key_G: |
|
1001 | if key == QtCore.Qt.Key_G: | |
1002 | self._keyboard_quit() |
|
1002 | self._keyboard_quit() | |
1003 | intercepted = True |
|
1003 | intercepted = True | |
1004 |
|
1004 | |||
1005 | elif key == QtCore.Qt.Key_K: |
|
1005 | elif key == QtCore.Qt.Key_K: | |
1006 | if self._in_buffer(position): |
|
1006 | if self._in_buffer(position): | |
1007 | cursor.movePosition(QtGui.QTextCursor.EndOfLine, |
|
1007 | cursor.movePosition(QtGui.QTextCursor.EndOfLine, | |
1008 | QtGui.QTextCursor.KeepAnchor) |
|
1008 | QtGui.QTextCursor.KeepAnchor) | |
1009 | if not cursor.hasSelection(): |
|
1009 | if not cursor.hasSelection(): | |
1010 | # Line deletion (remove continuation prompt) |
|
1010 | # Line deletion (remove continuation prompt) | |
1011 | cursor.movePosition(QtGui.QTextCursor.NextBlock, |
|
1011 | cursor.movePosition(QtGui.QTextCursor.NextBlock, | |
1012 | QtGui.QTextCursor.KeepAnchor) |
|
1012 | QtGui.QTextCursor.KeepAnchor) | |
1013 | cursor.movePosition(QtGui.QTextCursor.Right, |
|
1013 | cursor.movePosition(QtGui.QTextCursor.Right, | |
1014 | QtGui.QTextCursor.KeepAnchor, |
|
1014 | QtGui.QTextCursor.KeepAnchor, | |
1015 | len(self._continuation_prompt)) |
|
1015 | len(self._continuation_prompt)) | |
1016 | self._kill_ring.kill_cursor(cursor) |
|
1016 | self._kill_ring.kill_cursor(cursor) | |
1017 | intercepted = True |
|
1017 | intercepted = True | |
1018 |
|
1018 | |||
1019 | elif key == QtCore.Qt.Key_L: |
|
1019 | elif key == QtCore.Qt.Key_L: | |
1020 | self.prompt_to_top() |
|
1020 | self.prompt_to_top() | |
1021 | intercepted = True |
|
1021 | intercepted = True | |
1022 |
|
1022 | |||
1023 | elif key == QtCore.Qt.Key_O: |
|
1023 | elif key == QtCore.Qt.Key_O: | |
1024 | if self._page_control and self._page_control.isVisible(): |
|
1024 | if self._page_control and self._page_control.isVisible(): | |
1025 | self._page_control.setFocus() |
|
1025 | self._page_control.setFocus() | |
1026 | intercepted = True |
|
1026 | intercepted = True | |
1027 |
|
1027 | |||
1028 | elif key == QtCore.Qt.Key_U: |
|
1028 | elif key == QtCore.Qt.Key_U: | |
1029 | if self._in_buffer(position): |
|
1029 | if self._in_buffer(position): | |
1030 | start_line = cursor.blockNumber() |
|
1030 | start_line = cursor.blockNumber() | |
1031 | if start_line == self._get_prompt_cursor().blockNumber(): |
|
1031 | if start_line == self._get_prompt_cursor().blockNumber(): | |
1032 | offset = len(self._prompt) |
|
1032 | offset = len(self._prompt) | |
1033 | else: |
|
1033 | else: | |
1034 | offset = len(self._continuation_prompt) |
|
1034 | offset = len(self._continuation_prompt) | |
1035 | cursor.movePosition(QtGui.QTextCursor.StartOfBlock, |
|
1035 | cursor.movePosition(QtGui.QTextCursor.StartOfBlock, | |
1036 | QtGui.QTextCursor.KeepAnchor) |
|
1036 | QtGui.QTextCursor.KeepAnchor) | |
1037 | cursor.movePosition(QtGui.QTextCursor.Right, |
|
1037 | cursor.movePosition(QtGui.QTextCursor.Right, | |
1038 | QtGui.QTextCursor.KeepAnchor, offset) |
|
1038 | QtGui.QTextCursor.KeepAnchor, offset) | |
1039 | self._kill_ring.kill_cursor(cursor) |
|
1039 | self._kill_ring.kill_cursor(cursor) | |
1040 | intercepted = True |
|
1040 | intercepted = True | |
1041 |
|
1041 | |||
1042 | elif key == QtCore.Qt.Key_Y: |
|
1042 | elif key == QtCore.Qt.Key_Y: | |
1043 | self._keep_cursor_in_buffer() |
|
1043 | self._keep_cursor_in_buffer() | |
1044 | self._kill_ring.yank() |
|
1044 | self._kill_ring.yank() | |
1045 | intercepted = True |
|
1045 | intercepted = True | |
1046 |
|
1046 | |||
1047 | elif key in (QtCore.Qt.Key_Backspace, QtCore.Qt.Key_Delete): |
|
1047 | elif key in (QtCore.Qt.Key_Backspace, QtCore.Qt.Key_Delete): | |
|
1048 | if key == QtCore.Qt.Key_Backspace: | |||
|
1049 | cursor = self._get_word_start_cursor(position) | |||
|
1050 | else: # key == QtCore.Qt.Key_Delete | |||
|
1051 | cursor = self._get_word_end_cursor(position) | |||
|
1052 | cursor.setPosition(position, QtGui.QTextCursor.KeepAnchor) | |||
|
1053 | self._kill_ring.kill_cursor(cursor) | |||
1048 | intercepted = True |
|
1054 | intercepted = True | |
1049 |
|
1055 | |||
1050 | elif key in (QtCore.Qt.Key_Plus, QtCore.Qt.Key_Equal): |
|
1056 | elif key in (QtCore.Qt.Key_Plus, QtCore.Qt.Key_Equal): | |
1051 | self.change_font_size(1) |
|
1057 | self.change_font_size(1) | |
1052 | intercepted = True |
|
1058 | intercepted = True | |
1053 |
|
1059 | |||
1054 | elif key == QtCore.Qt.Key_Minus: |
|
1060 | elif key == QtCore.Qt.Key_Minus: | |
1055 | self.change_font_size(-1) |
|
1061 | self.change_font_size(-1) | |
1056 | intercepted = True |
|
1062 | intercepted = True | |
1057 |
|
1063 | |||
1058 | elif key == QtCore.Qt.Key_0: |
|
1064 | elif key == QtCore.Qt.Key_0: | |
1059 | self.reset_font() |
|
1065 | self.reset_font() | |
1060 | intercepted = True |
|
1066 | intercepted = True | |
1061 |
|
1067 | |||
1062 | #------ Alt modifier --------------------------------------------------- |
|
1068 | #------ Alt modifier --------------------------------------------------- | |
1063 |
|
1069 | |||
1064 | elif alt_down: |
|
1070 | elif alt_down: | |
1065 | if key == QtCore.Qt.Key_B: |
|
1071 | if key == QtCore.Qt.Key_B: | |
1066 | self._set_cursor(self._get_word_start_cursor(position)) |
|
1072 | self._set_cursor(self._get_word_start_cursor(position)) | |
1067 | intercepted = True |
|
1073 | intercepted = True | |
1068 |
|
1074 | |||
1069 | elif key == QtCore.Qt.Key_F: |
|
1075 | elif key == QtCore.Qt.Key_F: | |
1070 | self._set_cursor(self._get_word_end_cursor(position)) |
|
1076 | self._set_cursor(self._get_word_end_cursor(position)) | |
1071 | intercepted = True |
|
1077 | intercepted = True | |
1072 |
|
1078 | |||
1073 | elif key == QtCore.Qt.Key_Y: |
|
1079 | elif key == QtCore.Qt.Key_Y: | |
1074 | self._kill_ring.rotate() |
|
1080 | self._kill_ring.rotate() | |
1075 | intercepted = True |
|
1081 | intercepted = True | |
1076 |
|
1082 | |||
1077 | elif key == QtCore.Qt.Key_Backspace: |
|
1083 | elif key == QtCore.Qt.Key_Backspace: | |
1078 | cursor = self._get_word_start_cursor(position) |
|
1084 | cursor = self._get_word_start_cursor(position) | |
1079 | cursor.setPosition(position, QtGui.QTextCursor.KeepAnchor) |
|
1085 | cursor.setPosition(position, QtGui.QTextCursor.KeepAnchor) | |
1080 | self._kill_ring.kill_cursor(cursor) |
|
1086 | self._kill_ring.kill_cursor(cursor) | |
1081 | intercepted = True |
|
1087 | intercepted = True | |
1082 |
|
1088 | |||
1083 | elif key == QtCore.Qt.Key_D: |
|
1089 | elif key == QtCore.Qt.Key_D: | |
1084 | cursor = self._get_word_end_cursor(position) |
|
1090 | cursor = self._get_word_end_cursor(position) | |
1085 | cursor.setPosition(position, QtGui.QTextCursor.KeepAnchor) |
|
1091 | cursor.setPosition(position, QtGui.QTextCursor.KeepAnchor) | |
1086 | self._kill_ring.kill_cursor(cursor) |
|
1092 | self._kill_ring.kill_cursor(cursor) | |
1087 | intercepted = True |
|
1093 | intercepted = True | |
1088 |
|
1094 | |||
1089 | elif key == QtCore.Qt.Key_Delete: |
|
1095 | elif key == QtCore.Qt.Key_Delete: | |
1090 | intercepted = True |
|
1096 | intercepted = True | |
1091 |
|
1097 | |||
1092 | elif key == QtCore.Qt.Key_Greater: |
|
1098 | elif key == QtCore.Qt.Key_Greater: | |
1093 | self._control.moveCursor(QtGui.QTextCursor.End) |
|
1099 | self._control.moveCursor(QtGui.QTextCursor.End) | |
1094 | intercepted = True |
|
1100 | intercepted = True | |
1095 |
|
1101 | |||
1096 | elif key == QtCore.Qt.Key_Less: |
|
1102 | elif key == QtCore.Qt.Key_Less: | |
1097 | self._control.setTextCursor(self._get_prompt_cursor()) |
|
1103 | self._control.setTextCursor(self._get_prompt_cursor()) | |
1098 | intercepted = True |
|
1104 | intercepted = True | |
1099 |
|
1105 | |||
1100 | #------ No modifiers --------------------------------------------------- |
|
1106 | #------ No modifiers --------------------------------------------------- | |
1101 |
|
1107 | |||
1102 | else: |
|
1108 | else: | |
1103 | if shift_down: |
|
1109 | if shift_down: | |
1104 | anchormode = QtGui.QTextCursor.KeepAnchor |
|
1110 | anchormode = QtGui.QTextCursor.KeepAnchor | |
1105 | else: |
|
1111 | else: | |
1106 | anchormode = QtGui.QTextCursor.MoveAnchor |
|
1112 | anchormode = QtGui.QTextCursor.MoveAnchor | |
1107 |
|
1113 | |||
1108 | if key == QtCore.Qt.Key_Escape: |
|
1114 | if key == QtCore.Qt.Key_Escape: | |
1109 | self._keyboard_quit() |
|
1115 | self._keyboard_quit() | |
1110 | intercepted = True |
|
1116 | intercepted = True | |
1111 |
|
1117 | |||
1112 | elif key == QtCore.Qt.Key_Up: |
|
1118 | elif key == QtCore.Qt.Key_Up: | |
1113 | if self._reading or not self._up_pressed(shift_down): |
|
1119 | if self._reading or not self._up_pressed(shift_down): | |
1114 | intercepted = True |
|
1120 | intercepted = True | |
1115 | else: |
|
1121 | else: | |
1116 | prompt_line = self._get_prompt_cursor().blockNumber() |
|
1122 | prompt_line = self._get_prompt_cursor().blockNumber() | |
1117 | intercepted = cursor.blockNumber() <= prompt_line |
|
1123 | intercepted = cursor.blockNumber() <= prompt_line | |
1118 |
|
1124 | |||
1119 | elif key == QtCore.Qt.Key_Down: |
|
1125 | elif key == QtCore.Qt.Key_Down: | |
1120 | if self._reading or not self._down_pressed(shift_down): |
|
1126 | if self._reading or not self._down_pressed(shift_down): | |
1121 | intercepted = True |
|
1127 | intercepted = True | |
1122 | else: |
|
1128 | else: | |
1123 | end_line = self._get_end_cursor().blockNumber() |
|
1129 | end_line = self._get_end_cursor().blockNumber() | |
1124 | intercepted = cursor.blockNumber() == end_line |
|
1130 | intercepted = cursor.blockNumber() == end_line | |
1125 |
|
1131 | |||
1126 | elif key == QtCore.Qt.Key_Tab: |
|
1132 | elif key == QtCore.Qt.Key_Tab: | |
1127 | if not self._reading: |
|
1133 | if not self._reading: | |
1128 | intercepted = not self._tab_pressed() |
|
1134 | intercepted = not self._tab_pressed() | |
1129 |
|
1135 | |||
1130 | elif key == QtCore.Qt.Key_Left: |
|
1136 | elif key == QtCore.Qt.Key_Left: | |
1131 |
|
1137 | |||
1132 | # Move to the previous line |
|
1138 | # Move to the previous line | |
1133 | line, col = cursor.blockNumber(), cursor.columnNumber() |
|
1139 | line, col = cursor.blockNumber(), cursor.columnNumber() | |
1134 | if line > self._get_prompt_cursor().blockNumber() and \ |
|
1140 | if line > self._get_prompt_cursor().blockNumber() and \ | |
1135 | col == len(self._continuation_prompt): |
|
1141 | col == len(self._continuation_prompt): | |
1136 | self._control.moveCursor(QtGui.QTextCursor.PreviousBlock, |
|
1142 | self._control.moveCursor(QtGui.QTextCursor.PreviousBlock, | |
1137 | mode=anchormode) |
|
1143 | mode=anchormode) | |
1138 | self._control.moveCursor(QtGui.QTextCursor.EndOfBlock, |
|
1144 | self._control.moveCursor(QtGui.QTextCursor.EndOfBlock, | |
1139 | mode=anchormode) |
|
1145 | mode=anchormode) | |
1140 | intercepted = True |
|
1146 | intercepted = True | |
1141 |
|
1147 | |||
1142 | # Regular left movement |
|
1148 | # Regular left movement | |
1143 | else: |
|
1149 | else: | |
1144 | intercepted = not self._in_buffer(position - 1) |
|
1150 | intercepted = not self._in_buffer(position - 1) | |
1145 |
|
1151 | |||
1146 | elif key == QtCore.Qt.Key_Right: |
|
1152 | elif key == QtCore.Qt.Key_Right: | |
1147 | original_block_number = cursor.blockNumber() |
|
1153 | original_block_number = cursor.blockNumber() | |
1148 | cursor.movePosition(QtGui.QTextCursor.Right, |
|
1154 | cursor.movePosition(QtGui.QTextCursor.Right, | |
1149 | mode=anchormode) |
|
1155 | mode=anchormode) | |
1150 | if cursor.blockNumber() != original_block_number: |
|
1156 | if cursor.blockNumber() != original_block_number: | |
1151 | cursor.movePosition(QtGui.QTextCursor.Right, |
|
1157 | cursor.movePosition(QtGui.QTextCursor.Right, | |
1152 | n=len(self._continuation_prompt), |
|
1158 | n=len(self._continuation_prompt), | |
1153 | mode=anchormode) |
|
1159 | mode=anchormode) | |
1154 | self._set_cursor(cursor) |
|
1160 | self._set_cursor(cursor) | |
1155 | intercepted = True |
|
1161 | intercepted = True | |
1156 |
|
1162 | |||
1157 | elif key == QtCore.Qt.Key_Home: |
|
1163 | elif key == QtCore.Qt.Key_Home: | |
1158 | start_line = cursor.blockNumber() |
|
1164 | start_line = cursor.blockNumber() | |
1159 | if start_line == self._get_prompt_cursor().blockNumber(): |
|
1165 | if start_line == self._get_prompt_cursor().blockNumber(): | |
1160 | start_pos = self._prompt_pos |
|
1166 | start_pos = self._prompt_pos | |
1161 | else: |
|
1167 | else: | |
1162 | cursor.movePosition(QtGui.QTextCursor.StartOfBlock, |
|
1168 | cursor.movePosition(QtGui.QTextCursor.StartOfBlock, | |
1163 | QtGui.QTextCursor.KeepAnchor) |
|
1169 | QtGui.QTextCursor.KeepAnchor) | |
1164 | start_pos = cursor.position() |
|
1170 | start_pos = cursor.position() | |
1165 | start_pos += len(self._continuation_prompt) |
|
1171 | start_pos += len(self._continuation_prompt) | |
1166 | cursor.setPosition(position) |
|
1172 | cursor.setPosition(position) | |
1167 | if shift_down and self._in_buffer(position): |
|
1173 | if shift_down and self._in_buffer(position): | |
1168 | cursor.setPosition(start_pos, QtGui.QTextCursor.KeepAnchor) |
|
1174 | cursor.setPosition(start_pos, QtGui.QTextCursor.KeepAnchor) | |
1169 | else: |
|
1175 | else: | |
1170 | cursor.setPosition(start_pos) |
|
1176 | cursor.setPosition(start_pos) | |
1171 | self._set_cursor(cursor) |
|
1177 | self._set_cursor(cursor) | |
1172 | intercepted = True |
|
1178 | intercepted = True | |
1173 |
|
1179 | |||
1174 | elif key == QtCore.Qt.Key_Backspace: |
|
1180 | elif key == QtCore.Qt.Key_Backspace: | |
1175 |
|
1181 | |||
1176 | # Line deletion (remove continuation prompt) |
|
1182 | # Line deletion (remove continuation prompt) | |
1177 | line, col = cursor.blockNumber(), cursor.columnNumber() |
|
1183 | line, col = cursor.blockNumber(), cursor.columnNumber() | |
1178 | if not self._reading and \ |
|
1184 | if not self._reading and \ | |
1179 | col == len(self._continuation_prompt) and \ |
|
1185 | col == len(self._continuation_prompt) and \ | |
1180 | line > self._get_prompt_cursor().blockNumber(): |
|
1186 | line > self._get_prompt_cursor().blockNumber(): | |
1181 | cursor.beginEditBlock() |
|
1187 | cursor.beginEditBlock() | |
1182 | cursor.movePosition(QtGui.QTextCursor.StartOfBlock, |
|
1188 | cursor.movePosition(QtGui.QTextCursor.StartOfBlock, | |
1183 | QtGui.QTextCursor.KeepAnchor) |
|
1189 | QtGui.QTextCursor.KeepAnchor) | |
1184 | cursor.removeSelectedText() |
|
1190 | cursor.removeSelectedText() | |
1185 | cursor.deletePreviousChar() |
|
1191 | cursor.deletePreviousChar() | |
1186 | cursor.endEditBlock() |
|
1192 | cursor.endEditBlock() | |
1187 | intercepted = True |
|
1193 | intercepted = True | |
1188 |
|
1194 | |||
1189 | # Regular backwards deletion |
|
1195 | # Regular backwards deletion | |
1190 | else: |
|
1196 | else: | |
1191 | anchor = cursor.anchor() |
|
1197 | anchor = cursor.anchor() | |
1192 | if anchor == position: |
|
1198 | if anchor == position: | |
1193 | intercepted = not self._in_buffer(position - 1) |
|
1199 | intercepted = not self._in_buffer(position - 1) | |
1194 | else: |
|
1200 | else: | |
1195 | intercepted = not self._in_buffer(min(anchor, position)) |
|
1201 | intercepted = not self._in_buffer(min(anchor, position)) | |
1196 |
|
1202 | |||
1197 | elif key == QtCore.Qt.Key_Delete: |
|
1203 | elif key == QtCore.Qt.Key_Delete: | |
1198 |
|
1204 | |||
1199 | # Line deletion (remove continuation prompt) |
|
1205 | # Line deletion (remove continuation prompt) | |
1200 | if not self._reading and self._in_buffer(position) and \ |
|
1206 | if not self._reading and self._in_buffer(position) and \ | |
1201 | cursor.atBlockEnd() and not cursor.hasSelection(): |
|
1207 | cursor.atBlockEnd() and not cursor.hasSelection(): | |
1202 | cursor.movePosition(QtGui.QTextCursor.NextBlock, |
|
1208 | cursor.movePosition(QtGui.QTextCursor.NextBlock, | |
1203 | QtGui.QTextCursor.KeepAnchor) |
|
1209 | QtGui.QTextCursor.KeepAnchor) | |
1204 | cursor.movePosition(QtGui.QTextCursor.Right, |
|
1210 | cursor.movePosition(QtGui.QTextCursor.Right, | |
1205 | QtGui.QTextCursor.KeepAnchor, |
|
1211 | QtGui.QTextCursor.KeepAnchor, | |
1206 | len(self._continuation_prompt)) |
|
1212 | len(self._continuation_prompt)) | |
1207 | cursor.removeSelectedText() |
|
1213 | cursor.removeSelectedText() | |
1208 | intercepted = True |
|
1214 | intercepted = True | |
1209 |
|
1215 | |||
1210 | # Regular forwards deletion: |
|
1216 | # Regular forwards deletion: | |
1211 | else: |
|
1217 | else: | |
1212 | anchor = cursor.anchor() |
|
1218 | anchor = cursor.anchor() | |
1213 | intercepted = (not self._in_buffer(anchor) or |
|
1219 | intercepted = (not self._in_buffer(anchor) or | |
1214 | not self._in_buffer(position)) |
|
1220 | not self._in_buffer(position)) | |
1215 |
|
1221 | |||
1216 | # Don't move the cursor if Control/Cmd is pressed to allow copy-paste |
|
1222 | # Don't move the cursor if Control/Cmd is pressed to allow copy-paste | |
1217 | # using the keyboard in any part of the buffer. |
|
1223 | # using the keyboard in any part of the buffer. | |
1218 | if not self._control_key_down(event.modifiers(), include_command=True): |
|
1224 | if not self._control_key_down(event.modifiers(), include_command=True): | |
1219 | self._keep_cursor_in_buffer() |
|
1225 | self._keep_cursor_in_buffer() | |
1220 |
|
1226 | |||
1221 | return intercepted |
|
1227 | return intercepted | |
1222 |
|
1228 | |||
1223 | def _event_filter_page_keypress(self, event): |
|
1229 | def _event_filter_page_keypress(self, event): | |
1224 | """ Filter key events for the paging widget to create console-like |
|
1230 | """ Filter key events for the paging widget to create console-like | |
1225 | interface. |
|
1231 | interface. | |
1226 | """ |
|
1232 | """ | |
1227 | key = event.key() |
|
1233 | key = event.key() | |
1228 | ctrl_down = self._control_key_down(event.modifiers()) |
|
1234 | ctrl_down = self._control_key_down(event.modifiers()) | |
1229 | alt_down = event.modifiers() & QtCore.Qt.AltModifier |
|
1235 | alt_down = event.modifiers() & QtCore.Qt.AltModifier | |
1230 |
|
1236 | |||
1231 | if ctrl_down: |
|
1237 | if ctrl_down: | |
1232 | if key == QtCore.Qt.Key_O: |
|
1238 | if key == QtCore.Qt.Key_O: | |
1233 | self._control.setFocus() |
|
1239 | self._control.setFocus() | |
1234 | intercept = True |
|
1240 | intercept = True | |
1235 |
|
1241 | |||
1236 | elif alt_down: |
|
1242 | elif alt_down: | |
1237 | if key == QtCore.Qt.Key_Greater: |
|
1243 | if key == QtCore.Qt.Key_Greater: | |
1238 | self._page_control.moveCursor(QtGui.QTextCursor.End) |
|
1244 | self._page_control.moveCursor(QtGui.QTextCursor.End) | |
1239 | intercepted = True |
|
1245 | intercepted = True | |
1240 |
|
1246 | |||
1241 | elif key == QtCore.Qt.Key_Less: |
|
1247 | elif key == QtCore.Qt.Key_Less: | |
1242 | self._page_control.moveCursor(QtGui.QTextCursor.Start) |
|
1248 | self._page_control.moveCursor(QtGui.QTextCursor.Start) | |
1243 | intercepted = True |
|
1249 | intercepted = True | |
1244 |
|
1250 | |||
1245 | elif key in (QtCore.Qt.Key_Q, QtCore.Qt.Key_Escape): |
|
1251 | elif key in (QtCore.Qt.Key_Q, QtCore.Qt.Key_Escape): | |
1246 | if self._splitter: |
|
1252 | if self._splitter: | |
1247 | self._page_control.hide() |
|
1253 | self._page_control.hide() | |
1248 | else: |
|
1254 | else: | |
1249 | self.layout().setCurrentWidget(self._control) |
|
1255 | self.layout().setCurrentWidget(self._control) | |
1250 | return True |
|
1256 | return True | |
1251 |
|
1257 | |||
1252 | elif key in (QtCore.Qt.Key_Enter, QtCore.Qt.Key_Return): |
|
1258 | elif key in (QtCore.Qt.Key_Enter, QtCore.Qt.Key_Return): | |
1253 | new_event = QtGui.QKeyEvent(QtCore.QEvent.KeyPress, |
|
1259 | new_event = QtGui.QKeyEvent(QtCore.QEvent.KeyPress, | |
1254 | QtCore.Qt.Key_PageDown, |
|
1260 | QtCore.Qt.Key_PageDown, | |
1255 | QtCore.Qt.NoModifier) |
|
1261 | QtCore.Qt.NoModifier) | |
1256 | QtGui.qApp.sendEvent(self._page_control, new_event) |
|
1262 | QtGui.qApp.sendEvent(self._page_control, new_event) | |
1257 | return True |
|
1263 | return True | |
1258 |
|
1264 | |||
1259 | elif key == QtCore.Qt.Key_Backspace: |
|
1265 | elif key == QtCore.Qt.Key_Backspace: | |
1260 | new_event = QtGui.QKeyEvent(QtCore.QEvent.KeyPress, |
|
1266 | new_event = QtGui.QKeyEvent(QtCore.QEvent.KeyPress, | |
1261 | QtCore.Qt.Key_PageUp, |
|
1267 | QtCore.Qt.Key_PageUp, | |
1262 | QtCore.Qt.NoModifier) |
|
1268 | QtCore.Qt.NoModifier) | |
1263 | QtGui.qApp.sendEvent(self._page_control, new_event) |
|
1269 | QtGui.qApp.sendEvent(self._page_control, new_event) | |
1264 | return True |
|
1270 | return True | |
1265 |
|
1271 | |||
1266 | return False |
|
1272 | return False | |
1267 |
|
1273 | |||
1268 | def _format_as_columns(self, items, separator=' '): |
|
1274 | def _format_as_columns(self, items, separator=' '): | |
1269 | """ Transform a list of strings into a single string with columns. |
|
1275 | """ Transform a list of strings into a single string with columns. | |
1270 |
|
1276 | |||
1271 | Parameters |
|
1277 | Parameters | |
1272 | ---------- |
|
1278 | ---------- | |
1273 | items : sequence of strings |
|
1279 | items : sequence of strings | |
1274 | The strings to process. |
|
1280 | The strings to process. | |
1275 |
|
1281 | |||
1276 | separator : str, optional [default is two spaces] |
|
1282 | separator : str, optional [default is two spaces] | |
1277 | The string that separates columns. |
|
1283 | The string that separates columns. | |
1278 |
|
1284 | |||
1279 | Returns |
|
1285 | Returns | |
1280 | ------- |
|
1286 | ------- | |
1281 | The formatted string. |
|
1287 | The formatted string. | |
1282 | """ |
|
1288 | """ | |
1283 | # Note: this code is adapted from columnize 0.3.2. |
|
1289 | # Note: this code is adapted from columnize 0.3.2. | |
1284 | # See http://code.google.com/p/pycolumnize/ |
|
1290 | # See http://code.google.com/p/pycolumnize/ | |
1285 |
|
1291 | |||
1286 | # Calculate the number of characters available. |
|
1292 | # Calculate the number of characters available. | |
1287 | width = self._control.viewport().width() |
|
1293 | width = self._control.viewport().width() | |
1288 | char_width = QtGui.QFontMetrics(self.font).width(' ') |
|
1294 | char_width = QtGui.QFontMetrics(self.font).width(' ') | |
1289 | displaywidth = max(10, (width / char_width) - 1) |
|
1295 | displaywidth = max(10, (width / char_width) - 1) | |
1290 |
|
1296 | |||
1291 | # Some degenerate cases. |
|
1297 | # Some degenerate cases. | |
1292 | size = len(items) |
|
1298 | size = len(items) | |
1293 | if size == 0: |
|
1299 | if size == 0: | |
1294 | return '\n' |
|
1300 | return '\n' | |
1295 | elif size == 1: |
|
1301 | elif size == 1: | |
1296 | return '%s\n' % items[0] |
|
1302 | return '%s\n' % items[0] | |
1297 |
|
1303 | |||
1298 | # Try every row count from 1 upwards |
|
1304 | # Try every row count from 1 upwards | |
1299 | array_index = lambda nrows, row, col: nrows*col + row |
|
1305 | array_index = lambda nrows, row, col: nrows*col + row | |
1300 | for nrows in range(1, size): |
|
1306 | for nrows in range(1, size): | |
1301 | ncols = (size + nrows - 1) // nrows |
|
1307 | ncols = (size + nrows - 1) // nrows | |
1302 | colwidths = [] |
|
1308 | colwidths = [] | |
1303 | totwidth = -len(separator) |
|
1309 | totwidth = -len(separator) | |
1304 | for col in range(ncols): |
|
1310 | for col in range(ncols): | |
1305 | # Get max column width for this column |
|
1311 | # Get max column width for this column | |
1306 | colwidth = 0 |
|
1312 | colwidth = 0 | |
1307 | for row in range(nrows): |
|
1313 | for row in range(nrows): | |
1308 | i = array_index(nrows, row, col) |
|
1314 | i = array_index(nrows, row, col) | |
1309 | if i >= size: break |
|
1315 | if i >= size: break | |
1310 | x = items[i] |
|
1316 | x = items[i] | |
1311 | colwidth = max(colwidth, len(x)) |
|
1317 | colwidth = max(colwidth, len(x)) | |
1312 | colwidths.append(colwidth) |
|
1318 | colwidths.append(colwidth) | |
1313 | totwidth += colwidth + len(separator) |
|
1319 | totwidth += colwidth + len(separator) | |
1314 | if totwidth > displaywidth: |
|
1320 | if totwidth > displaywidth: | |
1315 | break |
|
1321 | break | |
1316 | if totwidth <= displaywidth: |
|
1322 | if totwidth <= displaywidth: | |
1317 | break |
|
1323 | break | |
1318 |
|
1324 | |||
1319 | # The smallest number of rows computed and the max widths for each |
|
1325 | # The smallest number of rows computed and the max widths for each | |
1320 | # column has been obtained. Now we just have to format each of the rows. |
|
1326 | # column has been obtained. Now we just have to format each of the rows. | |
1321 | string = '' |
|
1327 | string = '' | |
1322 | for row in range(nrows): |
|
1328 | for row in range(nrows): | |
1323 | texts = [] |
|
1329 | texts = [] | |
1324 | for col in range(ncols): |
|
1330 | for col in range(ncols): | |
1325 | i = row + nrows*col |
|
1331 | i = row + nrows*col | |
1326 | if i >= size: |
|
1332 | if i >= size: | |
1327 | texts.append('') |
|
1333 | texts.append('') | |
1328 | else: |
|
1334 | else: | |
1329 | texts.append(items[i]) |
|
1335 | texts.append(items[i]) | |
1330 | while texts and not texts[-1]: |
|
1336 | while texts and not texts[-1]: | |
1331 | del texts[-1] |
|
1337 | del texts[-1] | |
1332 | for col in range(len(texts)): |
|
1338 | for col in range(len(texts)): | |
1333 | texts[col] = texts[col].ljust(colwidths[col]) |
|
1339 | texts[col] = texts[col].ljust(colwidths[col]) | |
1334 | string += '%s\n' % separator.join(texts) |
|
1340 | string += '%s\n' % separator.join(texts) | |
1335 | return string |
|
1341 | return string | |
1336 |
|
1342 | |||
1337 | def _get_block_plain_text(self, block): |
|
1343 | def _get_block_plain_text(self, block): | |
1338 | """ Given a QTextBlock, return its unformatted text. |
|
1344 | """ Given a QTextBlock, return its unformatted text. | |
1339 | """ |
|
1345 | """ | |
1340 | cursor = QtGui.QTextCursor(block) |
|
1346 | cursor = QtGui.QTextCursor(block) | |
1341 | cursor.movePosition(QtGui.QTextCursor.StartOfBlock) |
|
1347 | cursor.movePosition(QtGui.QTextCursor.StartOfBlock) | |
1342 | cursor.movePosition(QtGui.QTextCursor.EndOfBlock, |
|
1348 | cursor.movePosition(QtGui.QTextCursor.EndOfBlock, | |
1343 | QtGui.QTextCursor.KeepAnchor) |
|
1349 | QtGui.QTextCursor.KeepAnchor) | |
1344 | return cursor.selection().toPlainText() |
|
1350 | return cursor.selection().toPlainText() | |
1345 |
|
1351 | |||
1346 | def _get_cursor(self): |
|
1352 | def _get_cursor(self): | |
1347 | """ Convenience method that returns a cursor for the current position. |
|
1353 | """ Convenience method that returns a cursor for the current position. | |
1348 | """ |
|
1354 | """ | |
1349 | return self._control.textCursor() |
|
1355 | return self._control.textCursor() | |
1350 |
|
1356 | |||
1351 | def _get_end_cursor(self): |
|
1357 | def _get_end_cursor(self): | |
1352 | """ Convenience method that returns a cursor for the last character. |
|
1358 | """ Convenience method that returns a cursor for the last character. | |
1353 | """ |
|
1359 | """ | |
1354 | cursor = self._control.textCursor() |
|
1360 | cursor = self._control.textCursor() | |
1355 | cursor.movePosition(QtGui.QTextCursor.End) |
|
1361 | cursor.movePosition(QtGui.QTextCursor.End) | |
1356 | return cursor |
|
1362 | return cursor | |
1357 |
|
1363 | |||
1358 | def _get_input_buffer_cursor_column(self): |
|
1364 | def _get_input_buffer_cursor_column(self): | |
1359 | """ Returns the column of the cursor in the input buffer, excluding the |
|
1365 | """ Returns the column of the cursor in the input buffer, excluding the | |
1360 | contribution by the prompt, or -1 if there is no such column. |
|
1366 | contribution by the prompt, or -1 if there is no such column. | |
1361 | """ |
|
1367 | """ | |
1362 | prompt = self._get_input_buffer_cursor_prompt() |
|
1368 | prompt = self._get_input_buffer_cursor_prompt() | |
1363 | if prompt is None: |
|
1369 | if prompt is None: | |
1364 | return -1 |
|
1370 | return -1 | |
1365 | else: |
|
1371 | else: | |
1366 | cursor = self._control.textCursor() |
|
1372 | cursor = self._control.textCursor() | |
1367 | return cursor.columnNumber() - len(prompt) |
|
1373 | return cursor.columnNumber() - len(prompt) | |
1368 |
|
1374 | |||
1369 | def _get_input_buffer_cursor_line(self): |
|
1375 | def _get_input_buffer_cursor_line(self): | |
1370 | """ Returns the text of the line of the input buffer that contains the |
|
1376 | """ Returns the text of the line of the input buffer that contains the | |
1371 | cursor, or None if there is no such line. |
|
1377 | cursor, or None if there is no such line. | |
1372 | """ |
|
1378 | """ | |
1373 | prompt = self._get_input_buffer_cursor_prompt() |
|
1379 | prompt = self._get_input_buffer_cursor_prompt() | |
1374 | if prompt is None: |
|
1380 | if prompt is None: | |
1375 | return None |
|
1381 | return None | |
1376 | else: |
|
1382 | else: | |
1377 | cursor = self._control.textCursor() |
|
1383 | cursor = self._control.textCursor() | |
1378 | text = self._get_block_plain_text(cursor.block()) |
|
1384 | text = self._get_block_plain_text(cursor.block()) | |
1379 | return text[len(prompt):] |
|
1385 | return text[len(prompt):] | |
1380 |
|
1386 | |||
1381 | def _get_input_buffer_cursor_prompt(self): |
|
1387 | def _get_input_buffer_cursor_prompt(self): | |
1382 | """ Returns the (plain text) prompt for line of the input buffer that |
|
1388 | """ Returns the (plain text) prompt for line of the input buffer that | |
1383 | contains the cursor, or None if there is no such line. |
|
1389 | contains the cursor, or None if there is no such line. | |
1384 | """ |
|
1390 | """ | |
1385 | if self._executing: |
|
1391 | if self._executing: | |
1386 | return None |
|
1392 | return None | |
1387 | cursor = self._control.textCursor() |
|
1393 | cursor = self._control.textCursor() | |
1388 | if cursor.position() >= self._prompt_pos: |
|
1394 | if cursor.position() >= self._prompt_pos: | |
1389 | if cursor.blockNumber() == self._get_prompt_cursor().blockNumber(): |
|
1395 | if cursor.blockNumber() == self._get_prompt_cursor().blockNumber(): | |
1390 | return self._prompt |
|
1396 | return self._prompt | |
1391 | else: |
|
1397 | else: | |
1392 | return self._continuation_prompt |
|
1398 | return self._continuation_prompt | |
1393 | else: |
|
1399 | else: | |
1394 | return None |
|
1400 | return None | |
1395 |
|
1401 | |||
1396 | def _get_prompt_cursor(self): |
|
1402 | def _get_prompt_cursor(self): | |
1397 | """ Convenience method that returns a cursor for the prompt position. |
|
1403 | """ Convenience method that returns a cursor for the prompt position. | |
1398 | """ |
|
1404 | """ | |
1399 | cursor = self._control.textCursor() |
|
1405 | cursor = self._control.textCursor() | |
1400 | cursor.setPosition(self._prompt_pos) |
|
1406 | cursor.setPosition(self._prompt_pos) | |
1401 | return cursor |
|
1407 | return cursor | |
1402 |
|
1408 | |||
1403 | def _get_selection_cursor(self, start, end): |
|
1409 | def _get_selection_cursor(self, start, end): | |
1404 | """ Convenience method that returns a cursor with text selected between |
|
1410 | """ Convenience method that returns a cursor with text selected between | |
1405 | the positions 'start' and 'end'. |
|
1411 | the positions 'start' and 'end'. | |
1406 | """ |
|
1412 | """ | |
1407 | cursor = self._control.textCursor() |
|
1413 | cursor = self._control.textCursor() | |
1408 | cursor.setPosition(start) |
|
1414 | cursor.setPosition(start) | |
1409 | cursor.setPosition(end, QtGui.QTextCursor.KeepAnchor) |
|
1415 | cursor.setPosition(end, QtGui.QTextCursor.KeepAnchor) | |
1410 | return cursor |
|
1416 | return cursor | |
1411 |
|
1417 | |||
1412 | def _get_word_start_cursor(self, position): |
|
1418 | def _get_word_start_cursor(self, position): | |
1413 | """ Find the start of the word to the left the given position. If a |
|
1419 | """ Find the start of the word to the left the given position. If a | |
1414 | sequence of non-word characters precedes the first word, skip over |
|
1420 | sequence of non-word characters precedes the first word, skip over | |
1415 | them. (This emulates the behavior of bash, emacs, etc.) |
|
1421 | them. (This emulates the behavior of bash, emacs, etc.) | |
1416 | """ |
|
1422 | """ | |
1417 | document = self._control.document() |
|
1423 | document = self._control.document() | |
1418 | position -= 1 |
|
1424 | position -= 1 | |
1419 | while position >= self._prompt_pos and \ |
|
1425 | while position >= self._prompt_pos and \ | |
1420 | not is_letter_or_number(document.characterAt(position)): |
|
1426 | not is_letter_or_number(document.characterAt(position)): | |
1421 | position -= 1 |
|
1427 | position -= 1 | |
1422 | while position >= self._prompt_pos and \ |
|
1428 | while position >= self._prompt_pos and \ | |
1423 | is_letter_or_number(document.characterAt(position)): |
|
1429 | is_letter_or_number(document.characterAt(position)): | |
1424 | position -= 1 |
|
1430 | position -= 1 | |
1425 | cursor = self._control.textCursor() |
|
1431 | cursor = self._control.textCursor() | |
1426 | cursor.setPosition(position + 1) |
|
1432 | cursor.setPosition(position + 1) | |
1427 | return cursor |
|
1433 | return cursor | |
1428 |
|
1434 | |||
1429 | def _get_word_end_cursor(self, position): |
|
1435 | def _get_word_end_cursor(self, position): | |
1430 | """ Find the end of the word to the right the given position. If a |
|
1436 | """ Find the end of the word to the right the given position. If a | |
1431 | sequence of non-word characters precedes the first word, skip over |
|
1437 | sequence of non-word characters precedes the first word, skip over | |
1432 | them. (This emulates the behavior of bash, emacs, etc.) |
|
1438 | them. (This emulates the behavior of bash, emacs, etc.) | |
1433 | """ |
|
1439 | """ | |
1434 | document = self._control.document() |
|
1440 | document = self._control.document() | |
1435 | end = self._get_end_cursor().position() |
|
1441 | end = self._get_end_cursor().position() | |
1436 | while position < end and \ |
|
1442 | while position < end and \ | |
1437 | not is_letter_or_number(document.characterAt(position)): |
|
1443 | not is_letter_or_number(document.characterAt(position)): | |
1438 | position += 1 |
|
1444 | position += 1 | |
1439 | while position < end and \ |
|
1445 | while position < end and \ | |
1440 | is_letter_or_number(document.characterAt(position)): |
|
1446 | is_letter_or_number(document.characterAt(position)): | |
1441 | position += 1 |
|
1447 | position += 1 | |
1442 | cursor = self._control.textCursor() |
|
1448 | cursor = self._control.textCursor() | |
1443 | cursor.setPosition(position) |
|
1449 | cursor.setPosition(position) | |
1444 | return cursor |
|
1450 | return cursor | |
1445 |
|
1451 | |||
1446 | def _insert_continuation_prompt(self, cursor): |
|
1452 | def _insert_continuation_prompt(self, cursor): | |
1447 | """ Inserts new continuation prompt using the specified cursor. |
|
1453 | """ Inserts new continuation prompt using the specified cursor. | |
1448 | """ |
|
1454 | """ | |
1449 | if self._continuation_prompt_html is None: |
|
1455 | if self._continuation_prompt_html is None: | |
1450 | self._insert_plain_text(cursor, self._continuation_prompt) |
|
1456 | self._insert_plain_text(cursor, self._continuation_prompt) | |
1451 | else: |
|
1457 | else: | |
1452 | self._continuation_prompt = self._insert_html_fetching_plain_text( |
|
1458 | self._continuation_prompt = self._insert_html_fetching_plain_text( | |
1453 | cursor, self._continuation_prompt_html) |
|
1459 | cursor, self._continuation_prompt_html) | |
1454 |
|
1460 | |||
1455 | def _insert_html(self, cursor, html): |
|
1461 | def _insert_html(self, cursor, html): | |
1456 | """ Inserts HTML using the specified cursor in such a way that future |
|
1462 | """ Inserts HTML using the specified cursor in such a way that future | |
1457 | formatting is unaffected. |
|
1463 | formatting is unaffected. | |
1458 | """ |
|
1464 | """ | |
1459 | cursor.beginEditBlock() |
|
1465 | cursor.beginEditBlock() | |
1460 | cursor.insertHtml(html) |
|
1466 | cursor.insertHtml(html) | |
1461 |
|
1467 | |||
1462 | # After inserting HTML, the text document "remembers" it's in "html |
|
1468 | # After inserting HTML, the text document "remembers" it's in "html | |
1463 | # mode", which means that subsequent calls adding plain text will result |
|
1469 | # mode", which means that subsequent calls adding plain text will result | |
1464 | # in unwanted formatting, lost tab characters, etc. The following code |
|
1470 | # in unwanted formatting, lost tab characters, etc. The following code | |
1465 | # hacks around this behavior, which I consider to be a bug in Qt, by |
|
1471 | # hacks around this behavior, which I consider to be a bug in Qt, by | |
1466 | # (crudely) resetting the document's style state. |
|
1472 | # (crudely) resetting the document's style state. | |
1467 | cursor.movePosition(QtGui.QTextCursor.Left, |
|
1473 | cursor.movePosition(QtGui.QTextCursor.Left, | |
1468 | QtGui.QTextCursor.KeepAnchor) |
|
1474 | QtGui.QTextCursor.KeepAnchor) | |
1469 | if cursor.selection().toPlainText() == ' ': |
|
1475 | if cursor.selection().toPlainText() == ' ': | |
1470 | cursor.removeSelectedText() |
|
1476 | cursor.removeSelectedText() | |
1471 | else: |
|
1477 | else: | |
1472 | cursor.movePosition(QtGui.QTextCursor.Right) |
|
1478 | cursor.movePosition(QtGui.QTextCursor.Right) | |
1473 | cursor.insertText(' ', QtGui.QTextCharFormat()) |
|
1479 | cursor.insertText(' ', QtGui.QTextCharFormat()) | |
1474 | cursor.endEditBlock() |
|
1480 | cursor.endEditBlock() | |
1475 |
|
1481 | |||
1476 | def _insert_html_fetching_plain_text(self, cursor, html): |
|
1482 | def _insert_html_fetching_plain_text(self, cursor, html): | |
1477 | """ Inserts HTML using the specified cursor, then returns its plain text |
|
1483 | """ Inserts HTML using the specified cursor, then returns its plain text | |
1478 | version. |
|
1484 | version. | |
1479 | """ |
|
1485 | """ | |
1480 | cursor.beginEditBlock() |
|
1486 | cursor.beginEditBlock() | |
1481 | cursor.removeSelectedText() |
|
1487 | cursor.removeSelectedText() | |
1482 |
|
1488 | |||
1483 | start = cursor.position() |
|
1489 | start = cursor.position() | |
1484 | self._insert_html(cursor, html) |
|
1490 | self._insert_html(cursor, html) | |
1485 | end = cursor.position() |
|
1491 | end = cursor.position() | |
1486 | cursor.setPosition(start, QtGui.QTextCursor.KeepAnchor) |
|
1492 | cursor.setPosition(start, QtGui.QTextCursor.KeepAnchor) | |
1487 | text = cursor.selection().toPlainText() |
|
1493 | text = cursor.selection().toPlainText() | |
1488 |
|
1494 | |||
1489 | cursor.setPosition(end) |
|
1495 | cursor.setPosition(end) | |
1490 | cursor.endEditBlock() |
|
1496 | cursor.endEditBlock() | |
1491 | return text |
|
1497 | return text | |
1492 |
|
1498 | |||
1493 | def _insert_plain_text(self, cursor, text): |
|
1499 | def _insert_plain_text(self, cursor, text): | |
1494 | """ Inserts plain text using the specified cursor, processing ANSI codes |
|
1500 | """ Inserts plain text using the specified cursor, processing ANSI codes | |
1495 | if enabled. |
|
1501 | if enabled. | |
1496 | """ |
|
1502 | """ | |
1497 | cursor.beginEditBlock() |
|
1503 | cursor.beginEditBlock() | |
1498 | if self.ansi_codes: |
|
1504 | if self.ansi_codes: | |
1499 | for substring in self._ansi_processor.split_string(text): |
|
1505 | for substring in self._ansi_processor.split_string(text): | |
1500 | for act in self._ansi_processor.actions: |
|
1506 | for act in self._ansi_processor.actions: | |
1501 |
|
1507 | |||
1502 | # Unlike real terminal emulators, we don't distinguish |
|
1508 | # Unlike real terminal emulators, we don't distinguish | |
1503 | # between the screen and the scrollback buffer. A screen |
|
1509 | # between the screen and the scrollback buffer. A screen | |
1504 | # erase request clears everything. |
|
1510 | # erase request clears everything. | |
1505 | if act.action == 'erase' and act.area == 'screen': |
|
1511 | if act.action == 'erase' and act.area == 'screen': | |
1506 | cursor.select(QtGui.QTextCursor.Document) |
|
1512 | cursor.select(QtGui.QTextCursor.Document) | |
1507 | cursor.removeSelectedText() |
|
1513 | cursor.removeSelectedText() | |
1508 |
|
1514 | |||
1509 | # Simulate a form feed by scrolling just past the last line. |
|
1515 | # Simulate a form feed by scrolling just past the last line. | |
1510 | elif act.action == 'scroll' and act.unit == 'page': |
|
1516 | elif act.action == 'scroll' and act.unit == 'page': | |
1511 | cursor.insertText('\n') |
|
1517 | cursor.insertText('\n') | |
1512 | cursor.endEditBlock() |
|
1518 | cursor.endEditBlock() | |
1513 | self._set_top_cursor(cursor) |
|
1519 | self._set_top_cursor(cursor) | |
1514 | cursor.joinPreviousEditBlock() |
|
1520 | cursor.joinPreviousEditBlock() | |
1515 | cursor.deletePreviousChar() |
|
1521 | cursor.deletePreviousChar() | |
1516 |
|
1522 | |||
1517 | format = self._ansi_processor.get_format() |
|
1523 | format = self._ansi_processor.get_format() | |
1518 | cursor.insertText(substring, format) |
|
1524 | cursor.insertText(substring, format) | |
1519 | else: |
|
1525 | else: | |
1520 | cursor.insertText(text) |
|
1526 | cursor.insertText(text) | |
1521 | cursor.endEditBlock() |
|
1527 | cursor.endEditBlock() | |
1522 |
|
1528 | |||
1523 | def _insert_plain_text_into_buffer(self, cursor, text): |
|
1529 | def _insert_plain_text_into_buffer(self, cursor, text): | |
1524 | """ Inserts text into the input buffer using the specified cursor (which |
|
1530 | """ Inserts text into the input buffer using the specified cursor (which | |
1525 | must be in the input buffer), ensuring that continuation prompts are |
|
1531 | must be in the input buffer), ensuring that continuation prompts are | |
1526 | inserted as necessary. |
|
1532 | inserted as necessary. | |
1527 | """ |
|
1533 | """ | |
1528 | lines = text.splitlines(True) |
|
1534 | lines = text.splitlines(True) | |
1529 | if lines: |
|
1535 | if lines: | |
1530 | cursor.beginEditBlock() |
|
1536 | cursor.beginEditBlock() | |
1531 | cursor.insertText(lines[0]) |
|
1537 | cursor.insertText(lines[0]) | |
1532 | for line in lines[1:]: |
|
1538 | for line in lines[1:]: | |
1533 | if self._continuation_prompt_html is None: |
|
1539 | if self._continuation_prompt_html is None: | |
1534 | cursor.insertText(self._continuation_prompt) |
|
1540 | cursor.insertText(self._continuation_prompt) | |
1535 | else: |
|
1541 | else: | |
1536 | self._continuation_prompt = \ |
|
1542 | self._continuation_prompt = \ | |
1537 | self._insert_html_fetching_plain_text( |
|
1543 | self._insert_html_fetching_plain_text( | |
1538 | cursor, self._continuation_prompt_html) |
|
1544 | cursor, self._continuation_prompt_html) | |
1539 | cursor.insertText(line) |
|
1545 | cursor.insertText(line) | |
1540 | cursor.endEditBlock() |
|
1546 | cursor.endEditBlock() | |
1541 |
|
1547 | |||
1542 | def _in_buffer(self, position=None): |
|
1548 | def _in_buffer(self, position=None): | |
1543 | """ Returns whether the current cursor (or, if specified, a position) is |
|
1549 | """ Returns whether the current cursor (or, if specified, a position) is | |
1544 | inside the editing region. |
|
1550 | inside the editing region. | |
1545 | """ |
|
1551 | """ | |
1546 | cursor = self._control.textCursor() |
|
1552 | cursor = self._control.textCursor() | |
1547 | if position is None: |
|
1553 | if position is None: | |
1548 | position = cursor.position() |
|
1554 | position = cursor.position() | |
1549 | else: |
|
1555 | else: | |
1550 | cursor.setPosition(position) |
|
1556 | cursor.setPosition(position) | |
1551 | line = cursor.blockNumber() |
|
1557 | line = cursor.blockNumber() | |
1552 | prompt_line = self._get_prompt_cursor().blockNumber() |
|
1558 | prompt_line = self._get_prompt_cursor().blockNumber() | |
1553 | if line == prompt_line: |
|
1559 | if line == prompt_line: | |
1554 | return position >= self._prompt_pos |
|
1560 | return position >= self._prompt_pos | |
1555 | elif line > prompt_line: |
|
1561 | elif line > prompt_line: | |
1556 | cursor.movePosition(QtGui.QTextCursor.StartOfBlock) |
|
1562 | cursor.movePosition(QtGui.QTextCursor.StartOfBlock) | |
1557 | prompt_pos = cursor.position() + len(self._continuation_prompt) |
|
1563 | prompt_pos = cursor.position() + len(self._continuation_prompt) | |
1558 | return position >= prompt_pos |
|
1564 | return position >= prompt_pos | |
1559 | return False |
|
1565 | return False | |
1560 |
|
1566 | |||
1561 | def _keep_cursor_in_buffer(self): |
|
1567 | def _keep_cursor_in_buffer(self): | |
1562 | """ Ensures that the cursor is inside the editing region. Returns |
|
1568 | """ Ensures that the cursor is inside the editing region. Returns | |
1563 | whether the cursor was moved. |
|
1569 | whether the cursor was moved. | |
1564 | """ |
|
1570 | """ | |
1565 | moved = not self._in_buffer() |
|
1571 | moved = not self._in_buffer() | |
1566 | if moved: |
|
1572 | if moved: | |
1567 | cursor = self._control.textCursor() |
|
1573 | cursor = self._control.textCursor() | |
1568 | cursor.movePosition(QtGui.QTextCursor.End) |
|
1574 | cursor.movePosition(QtGui.QTextCursor.End) | |
1569 | self._control.setTextCursor(cursor) |
|
1575 | self._control.setTextCursor(cursor) | |
1570 | return moved |
|
1576 | return moved | |
1571 |
|
1577 | |||
1572 | def _keyboard_quit(self): |
|
1578 | def _keyboard_quit(self): | |
1573 | """ Cancels the current editing task ala Ctrl-G in Emacs. |
|
1579 | """ Cancels the current editing task ala Ctrl-G in Emacs. | |
1574 | """ |
|
1580 | """ | |
1575 | if self._text_completing_pos: |
|
1581 | if self._text_completing_pos: | |
1576 | self._cancel_text_completion() |
|
1582 | self._cancel_text_completion() | |
1577 | else: |
|
1583 | else: | |
1578 | self.input_buffer = '' |
|
1584 | self.input_buffer = '' | |
1579 |
|
1585 | |||
1580 | def _page(self, text, html=False): |
|
1586 | def _page(self, text, html=False): | |
1581 | """ Displays text using the pager if it exceeds the height of the |
|
1587 | """ Displays text using the pager if it exceeds the height of the | |
1582 | viewport. |
|
1588 | viewport. | |
1583 |
|
1589 | |||
1584 | Parameters: |
|
1590 | Parameters: | |
1585 | ----------- |
|
1591 | ----------- | |
1586 | html : bool, optional (default False) |
|
1592 | html : bool, optional (default False) | |
1587 | If set, the text will be interpreted as HTML instead of plain text. |
|
1593 | If set, the text will be interpreted as HTML instead of plain text. | |
1588 | """ |
|
1594 | """ | |
1589 | line_height = QtGui.QFontMetrics(self.font).height() |
|
1595 | line_height = QtGui.QFontMetrics(self.font).height() | |
1590 | minlines = self._control.viewport().height() / line_height |
|
1596 | minlines = self._control.viewport().height() / line_height | |
1591 | if self.paging != 'none' and \ |
|
1597 | if self.paging != 'none' and \ | |
1592 | re.match("(?:[^\n]*\n){%i}" % minlines, text): |
|
1598 | re.match("(?:[^\n]*\n){%i}" % minlines, text): | |
1593 | if self.paging == 'custom': |
|
1599 | if self.paging == 'custom': | |
1594 | self.custom_page_requested.emit(text) |
|
1600 | self.custom_page_requested.emit(text) | |
1595 | else: |
|
1601 | else: | |
1596 | self._page_control.clear() |
|
1602 | self._page_control.clear() | |
1597 | cursor = self._page_control.textCursor() |
|
1603 | cursor = self._page_control.textCursor() | |
1598 | if html: |
|
1604 | if html: | |
1599 | self._insert_html(cursor, text) |
|
1605 | self._insert_html(cursor, text) | |
1600 | else: |
|
1606 | else: | |
1601 | self._insert_plain_text(cursor, text) |
|
1607 | self._insert_plain_text(cursor, text) | |
1602 | self._page_control.moveCursor(QtGui.QTextCursor.Start) |
|
1608 | self._page_control.moveCursor(QtGui.QTextCursor.Start) | |
1603 |
|
1609 | |||
1604 | self._page_control.viewport().resize(self._control.size()) |
|
1610 | self._page_control.viewport().resize(self._control.size()) | |
1605 | if self._splitter: |
|
1611 | if self._splitter: | |
1606 | self._page_control.show() |
|
1612 | self._page_control.show() | |
1607 | self._page_control.setFocus() |
|
1613 | self._page_control.setFocus() | |
1608 | else: |
|
1614 | else: | |
1609 | self.layout().setCurrentWidget(self._page_control) |
|
1615 | self.layout().setCurrentWidget(self._page_control) | |
1610 | elif html: |
|
1616 | elif html: | |
1611 | self._append_plain_html(text) |
|
1617 | self._append_plain_html(text) | |
1612 | else: |
|
1618 | else: | |
1613 | self._append_plain_text(text) |
|
1619 | self._append_plain_text(text) | |
1614 |
|
1620 | |||
1615 | def _prompt_finished(self): |
|
1621 | def _prompt_finished(self): | |
1616 | """ Called immediately after a prompt is finished, i.e. when some input |
|
1622 | """ Called immediately after a prompt is finished, i.e. when some input | |
1617 | will be processed and a new prompt displayed. |
|
1623 | will be processed and a new prompt displayed. | |
1618 | """ |
|
1624 | """ | |
1619 | self._control.setReadOnly(True) |
|
1625 | self._control.setReadOnly(True) | |
1620 | self._prompt_finished_hook() |
|
1626 | self._prompt_finished_hook() | |
1621 |
|
1627 | |||
1622 | def _prompt_started(self): |
|
1628 | def _prompt_started(self): | |
1623 | """ Called immediately after a new prompt is displayed. |
|
1629 | """ Called immediately after a new prompt is displayed. | |
1624 | """ |
|
1630 | """ | |
1625 | # Temporarily disable the maximum block count to permit undo/redo and |
|
1631 | # Temporarily disable the maximum block count to permit undo/redo and | |
1626 | # to ensure that the prompt position does not change due to truncation. |
|
1632 | # to ensure that the prompt position does not change due to truncation. | |
1627 | self._control.document().setMaximumBlockCount(0) |
|
1633 | self._control.document().setMaximumBlockCount(0) | |
1628 | self._control.setUndoRedoEnabled(True) |
|
1634 | self._control.setUndoRedoEnabled(True) | |
1629 |
|
1635 | |||
1630 | # Work around bug in QPlainTextEdit: input method is not re-enabled |
|
1636 | # Work around bug in QPlainTextEdit: input method is not re-enabled | |
1631 | # when read-only is disabled. |
|
1637 | # when read-only is disabled. | |
1632 | self._control.setReadOnly(False) |
|
1638 | self._control.setReadOnly(False) | |
1633 | self._control.setAttribute(QtCore.Qt.WA_InputMethodEnabled, True) |
|
1639 | self._control.setAttribute(QtCore.Qt.WA_InputMethodEnabled, True) | |
1634 |
|
1640 | |||
1635 | if not self._reading: |
|
1641 | if not self._reading: | |
1636 | self._executing = False |
|
1642 | self._executing = False | |
1637 | self._prompt_started_hook() |
|
1643 | self._prompt_started_hook() | |
1638 |
|
1644 | |||
1639 | # If the input buffer has changed while executing, load it. |
|
1645 | # If the input buffer has changed while executing, load it. | |
1640 | if self._input_buffer_pending: |
|
1646 | if self._input_buffer_pending: | |
1641 | self.input_buffer = self._input_buffer_pending |
|
1647 | self.input_buffer = self._input_buffer_pending | |
1642 | self._input_buffer_pending = '' |
|
1648 | self._input_buffer_pending = '' | |
1643 |
|
1649 | |||
1644 | self._control.moveCursor(QtGui.QTextCursor.End) |
|
1650 | self._control.moveCursor(QtGui.QTextCursor.End) | |
1645 |
|
1651 | |||
1646 | def _readline(self, prompt='', callback=None): |
|
1652 | def _readline(self, prompt='', callback=None): | |
1647 | """ Reads one line of input from the user. |
|
1653 | """ Reads one line of input from the user. | |
1648 |
|
1654 | |||
1649 | Parameters |
|
1655 | Parameters | |
1650 | ---------- |
|
1656 | ---------- | |
1651 | prompt : str, optional |
|
1657 | prompt : str, optional | |
1652 | The prompt to print before reading the line. |
|
1658 | The prompt to print before reading the line. | |
1653 |
|
1659 | |||
1654 | callback : callable, optional |
|
1660 | callback : callable, optional | |
1655 | A callback to execute with the read line. If not specified, input is |
|
1661 | A callback to execute with the read line. If not specified, input is | |
1656 | read *synchronously* and this method does not return until it has |
|
1662 | read *synchronously* and this method does not return until it has | |
1657 | been read. |
|
1663 | been read. | |
1658 |
|
1664 | |||
1659 | Returns |
|
1665 | Returns | |
1660 | ------- |
|
1666 | ------- | |
1661 | If a callback is specified, returns nothing. Otherwise, returns the |
|
1667 | If a callback is specified, returns nothing. Otherwise, returns the | |
1662 | input string with the trailing newline stripped. |
|
1668 | input string with the trailing newline stripped. | |
1663 | """ |
|
1669 | """ | |
1664 | if self._reading: |
|
1670 | if self._reading: | |
1665 | raise RuntimeError('Cannot read a line. Widget is already reading.') |
|
1671 | raise RuntimeError('Cannot read a line. Widget is already reading.') | |
1666 |
|
1672 | |||
1667 | if not callback and not self.isVisible(): |
|
1673 | if not callback and not self.isVisible(): | |
1668 | # If the user cannot see the widget, this function cannot return. |
|
1674 | # If the user cannot see the widget, this function cannot return. | |
1669 | raise RuntimeError('Cannot synchronously read a line if the widget ' |
|
1675 | raise RuntimeError('Cannot synchronously read a line if the widget ' | |
1670 | 'is not visible!') |
|
1676 | 'is not visible!') | |
1671 |
|
1677 | |||
1672 | self._reading = True |
|
1678 | self._reading = True | |
1673 | self._show_prompt(prompt, newline=False) |
|
1679 | self._show_prompt(prompt, newline=False) | |
1674 |
|
1680 | |||
1675 | if callback is None: |
|
1681 | if callback is None: | |
1676 | self._reading_callback = None |
|
1682 | self._reading_callback = None | |
1677 | while self._reading: |
|
1683 | while self._reading: | |
1678 | QtCore.QCoreApplication.processEvents() |
|
1684 | QtCore.QCoreApplication.processEvents() | |
1679 | return self._get_input_buffer(force=True).rstrip('\n') |
|
1685 | return self._get_input_buffer(force=True).rstrip('\n') | |
1680 |
|
1686 | |||
1681 | else: |
|
1687 | else: | |
1682 | self._reading_callback = lambda: \ |
|
1688 | self._reading_callback = lambda: \ | |
1683 | callback(self._get_input_buffer(force=True).rstrip('\n')) |
|
1689 | callback(self._get_input_buffer(force=True).rstrip('\n')) | |
1684 |
|
1690 | |||
1685 | def _set_continuation_prompt(self, prompt, html=False): |
|
1691 | def _set_continuation_prompt(self, prompt, html=False): | |
1686 | """ Sets the continuation prompt. |
|
1692 | """ Sets the continuation prompt. | |
1687 |
|
1693 | |||
1688 | Parameters |
|
1694 | Parameters | |
1689 | ---------- |
|
1695 | ---------- | |
1690 | prompt : str |
|
1696 | prompt : str | |
1691 | The prompt to show when more input is needed. |
|
1697 | The prompt to show when more input is needed. | |
1692 |
|
1698 | |||
1693 | html : bool, optional (default False) |
|
1699 | html : bool, optional (default False) | |
1694 | If set, the prompt will be inserted as formatted HTML. Otherwise, |
|
1700 | If set, the prompt will be inserted as formatted HTML. Otherwise, | |
1695 | the prompt will be treated as plain text, though ANSI color codes |
|
1701 | the prompt will be treated as plain text, though ANSI color codes | |
1696 | will be handled. |
|
1702 | will be handled. | |
1697 | """ |
|
1703 | """ | |
1698 | if html: |
|
1704 | if html: | |
1699 | self._continuation_prompt_html = prompt |
|
1705 | self._continuation_prompt_html = prompt | |
1700 | else: |
|
1706 | else: | |
1701 | self._continuation_prompt = prompt |
|
1707 | self._continuation_prompt = prompt | |
1702 | self._continuation_prompt_html = None |
|
1708 | self._continuation_prompt_html = None | |
1703 |
|
1709 | |||
1704 | def _set_cursor(self, cursor): |
|
1710 | def _set_cursor(self, cursor): | |
1705 | """ Convenience method to set the current cursor. |
|
1711 | """ Convenience method to set the current cursor. | |
1706 | """ |
|
1712 | """ | |
1707 | self._control.setTextCursor(cursor) |
|
1713 | self._control.setTextCursor(cursor) | |
1708 |
|
1714 | |||
1709 | def _set_top_cursor(self, cursor): |
|
1715 | def _set_top_cursor(self, cursor): | |
1710 | """ Scrolls the viewport so that the specified cursor is at the top. |
|
1716 | """ Scrolls the viewport so that the specified cursor is at the top. | |
1711 | """ |
|
1717 | """ | |
1712 | scrollbar = self._control.verticalScrollBar() |
|
1718 | scrollbar = self._control.verticalScrollBar() | |
1713 | scrollbar.setValue(scrollbar.maximum()) |
|
1719 | scrollbar.setValue(scrollbar.maximum()) | |
1714 | original_cursor = self._control.textCursor() |
|
1720 | original_cursor = self._control.textCursor() | |
1715 | self._control.setTextCursor(cursor) |
|
1721 | self._control.setTextCursor(cursor) | |
1716 | self._control.ensureCursorVisible() |
|
1722 | self._control.ensureCursorVisible() | |
1717 | self._control.setTextCursor(original_cursor) |
|
1723 | self._control.setTextCursor(original_cursor) | |
1718 |
|
1724 | |||
1719 | def _show_prompt(self, prompt=None, html=False, newline=True): |
|
1725 | def _show_prompt(self, prompt=None, html=False, newline=True): | |
1720 | """ Writes a new prompt at the end of the buffer. |
|
1726 | """ Writes a new prompt at the end of the buffer. | |
1721 |
|
1727 | |||
1722 | Parameters |
|
1728 | Parameters | |
1723 | ---------- |
|
1729 | ---------- | |
1724 | prompt : str, optional |
|
1730 | prompt : str, optional | |
1725 | The prompt to show. If not specified, the previous prompt is used. |
|
1731 | The prompt to show. If not specified, the previous prompt is used. | |
1726 |
|
1732 | |||
1727 | html : bool, optional (default False) |
|
1733 | html : bool, optional (default False) | |
1728 | Only relevant when a prompt is specified. If set, the prompt will |
|
1734 | Only relevant when a prompt is specified. If set, the prompt will | |
1729 | be inserted as formatted HTML. Otherwise, the prompt will be treated |
|
1735 | be inserted as formatted HTML. Otherwise, the prompt will be treated | |
1730 | as plain text, though ANSI color codes will be handled. |
|
1736 | as plain text, though ANSI color codes will be handled. | |
1731 |
|
1737 | |||
1732 | newline : bool, optional (default True) |
|
1738 | newline : bool, optional (default True) | |
1733 | If set, a new line will be written before showing the prompt if |
|
1739 | If set, a new line will be written before showing the prompt if | |
1734 | there is not already a newline at the end of the buffer. |
|
1740 | there is not already a newline at the end of the buffer. | |
1735 | """ |
|
1741 | """ | |
1736 | # Save the current end position to support _append*(before_prompt=True). |
|
1742 | # Save the current end position to support _append*(before_prompt=True). | |
1737 | cursor = self._get_end_cursor() |
|
1743 | cursor = self._get_end_cursor() | |
1738 | self._append_before_prompt_pos = cursor.position() |
|
1744 | self._append_before_prompt_pos = cursor.position() | |
1739 |
|
1745 | |||
1740 | # Insert a preliminary newline, if necessary. |
|
1746 | # Insert a preliminary newline, if necessary. | |
1741 | if newline and cursor.position() > 0: |
|
1747 | if newline and cursor.position() > 0: | |
1742 | cursor.movePosition(QtGui.QTextCursor.Left, |
|
1748 | cursor.movePosition(QtGui.QTextCursor.Left, | |
1743 | QtGui.QTextCursor.KeepAnchor) |
|
1749 | QtGui.QTextCursor.KeepAnchor) | |
1744 | if cursor.selection().toPlainText() != '\n': |
|
1750 | if cursor.selection().toPlainText() != '\n': | |
1745 | self._append_plain_text('\n') |
|
1751 | self._append_plain_text('\n') | |
1746 |
|
1752 | |||
1747 | # Write the prompt. |
|
1753 | # Write the prompt. | |
1748 | self._append_plain_text(self._prompt_sep) |
|
1754 | self._append_plain_text(self._prompt_sep) | |
1749 | if prompt is None: |
|
1755 | if prompt is None: | |
1750 | if self._prompt_html is None: |
|
1756 | if self._prompt_html is None: | |
1751 | self._append_plain_text(self._prompt) |
|
1757 | self._append_plain_text(self._prompt) | |
1752 | else: |
|
1758 | else: | |
1753 | self._append_html(self._prompt_html) |
|
1759 | self._append_html(self._prompt_html) | |
1754 | else: |
|
1760 | else: | |
1755 | if html: |
|
1761 | if html: | |
1756 | self._prompt = self._append_html_fetching_plain_text(prompt) |
|
1762 | self._prompt = self._append_html_fetching_plain_text(prompt) | |
1757 | self._prompt_html = prompt |
|
1763 | self._prompt_html = prompt | |
1758 | else: |
|
1764 | else: | |
1759 | self._append_plain_text(prompt) |
|
1765 | self._append_plain_text(prompt) | |
1760 | self._prompt = prompt |
|
1766 | self._prompt = prompt | |
1761 | self._prompt_html = None |
|
1767 | self._prompt_html = None | |
1762 |
|
1768 | |||
1763 | self._prompt_pos = self._get_end_cursor().position() |
|
1769 | self._prompt_pos = self._get_end_cursor().position() | |
1764 | self._prompt_started() |
|
1770 | self._prompt_started() | |
1765 |
|
1771 | |||
1766 | #------ Signal handlers ---------------------------------------------------- |
|
1772 | #------ Signal handlers ---------------------------------------------------- | |
1767 |
|
1773 | |||
1768 | def _adjust_scrollbars(self): |
|
1774 | def _adjust_scrollbars(self): | |
1769 | """ Expands the vertical scrollbar beyond the range set by Qt. |
|
1775 | """ Expands the vertical scrollbar beyond the range set by Qt. | |
1770 | """ |
|
1776 | """ | |
1771 | # This code is adapted from _q_adjustScrollbars in qplaintextedit.cpp |
|
1777 | # This code is adapted from _q_adjustScrollbars in qplaintextedit.cpp | |
1772 | # and qtextedit.cpp. |
|
1778 | # and qtextedit.cpp. | |
1773 | document = self._control.document() |
|
1779 | document = self._control.document() | |
1774 | scrollbar = self._control.verticalScrollBar() |
|
1780 | scrollbar = self._control.verticalScrollBar() | |
1775 | viewport_height = self._control.viewport().height() |
|
1781 | viewport_height = self._control.viewport().height() | |
1776 | if isinstance(self._control, QtGui.QPlainTextEdit): |
|
1782 | if isinstance(self._control, QtGui.QPlainTextEdit): | |
1777 | maximum = max(0, document.lineCount() - 1) |
|
1783 | maximum = max(0, document.lineCount() - 1) | |
1778 | step = viewport_height / self._control.fontMetrics().lineSpacing() |
|
1784 | step = viewport_height / self._control.fontMetrics().lineSpacing() | |
1779 | else: |
|
1785 | else: | |
1780 | # QTextEdit does not do line-based layout and blocks will not in |
|
1786 | # QTextEdit does not do line-based layout and blocks will not in | |
1781 | # general have the same height. Therefore it does not make sense to |
|
1787 | # general have the same height. Therefore it does not make sense to | |
1782 | # attempt to scroll in line height increments. |
|
1788 | # attempt to scroll in line height increments. | |
1783 | maximum = document.size().height() |
|
1789 | maximum = document.size().height() | |
1784 | step = viewport_height |
|
1790 | step = viewport_height | |
1785 | diff = maximum - scrollbar.maximum() |
|
1791 | diff = maximum - scrollbar.maximum() | |
1786 | scrollbar.setRange(0, maximum) |
|
1792 | scrollbar.setRange(0, maximum) | |
1787 | scrollbar.setPageStep(step) |
|
1793 | scrollbar.setPageStep(step) | |
1788 |
|
1794 | |||
1789 | # Compensate for undesirable scrolling that occurs automatically due to |
|
1795 | # Compensate for undesirable scrolling that occurs automatically due to | |
1790 | # maximumBlockCount() text truncation. |
|
1796 | # maximumBlockCount() text truncation. | |
1791 | if diff < 0 and document.blockCount() == document.maximumBlockCount(): |
|
1797 | if diff < 0 and document.blockCount() == document.maximumBlockCount(): | |
1792 | scrollbar.setValue(scrollbar.value() + diff) |
|
1798 | scrollbar.setValue(scrollbar.value() + diff) | |
1793 |
|
1799 | |||
1794 | def _cursor_position_changed(self): |
|
1800 | def _cursor_position_changed(self): | |
1795 | """ Clears the temporary buffer based on the cursor position. |
|
1801 | """ Clears the temporary buffer based on the cursor position. | |
1796 | """ |
|
1802 | """ | |
1797 | if self._text_completing_pos: |
|
1803 | if self._text_completing_pos: | |
1798 | document = self._control.document() |
|
1804 | document = self._control.document() | |
1799 | if self._text_completing_pos < document.characterCount(): |
|
1805 | if self._text_completing_pos < document.characterCount(): | |
1800 | cursor = self._control.textCursor() |
|
1806 | cursor = self._control.textCursor() | |
1801 | pos = cursor.position() |
|
1807 | pos = cursor.position() | |
1802 | text_cursor = self._control.textCursor() |
|
1808 | text_cursor = self._control.textCursor() | |
1803 | text_cursor.setPosition(self._text_completing_pos) |
|
1809 | text_cursor.setPosition(self._text_completing_pos) | |
1804 | if pos < self._text_completing_pos or \ |
|
1810 | if pos < self._text_completing_pos or \ | |
1805 | cursor.blockNumber() > text_cursor.blockNumber(): |
|
1811 | cursor.blockNumber() > text_cursor.blockNumber(): | |
1806 | self._clear_temporary_buffer() |
|
1812 | self._clear_temporary_buffer() | |
1807 | self._text_completing_pos = 0 |
|
1813 | self._text_completing_pos = 0 | |
1808 | else: |
|
1814 | else: | |
1809 | self._clear_temporary_buffer() |
|
1815 | self._clear_temporary_buffer() | |
1810 | self._text_completing_pos = 0 |
|
1816 | self._text_completing_pos = 0 | |
1811 |
|
1817 | |||
1812 | def _custom_context_menu_requested(self, pos): |
|
1818 | def _custom_context_menu_requested(self, pos): | |
1813 | """ Shows a context menu at the given QPoint (in widget coordinates). |
|
1819 | """ Shows a context menu at the given QPoint (in widget coordinates). | |
1814 | """ |
|
1820 | """ | |
1815 | menu = self._context_menu_make(pos) |
|
1821 | menu = self._context_menu_make(pos) | |
1816 | menu.exec_(self._control.mapToGlobal(pos)) |
|
1822 | menu.exec_(self._control.mapToGlobal(pos)) |
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