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@@ -1,931 +1,972 b'' | |||||
1 | # Standard library imports |
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1 | # Standard library imports | |
2 | import sys |
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2 | import sys | |
3 |
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3 | |||
4 | # System library imports |
|
4 | # System library imports | |
5 | from PyQt4 import QtCore, QtGui |
|
5 | from PyQt4 import QtCore, QtGui | |
6 |
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6 | |||
7 | # Local imports |
|
7 | # Local imports | |
8 | from IPython.external.columnize import columnize |
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|||
9 | from ansi_code_processor import QtAnsiCodeProcessor |
|
8 | from ansi_code_processor import QtAnsiCodeProcessor | |
10 | from completion_widget import CompletionWidget |
|
9 | from completion_widget import CompletionWidget | |
11 |
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10 | |||
12 |
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11 | |||
13 | class ConsoleWidget(QtGui.QPlainTextEdit): |
|
12 | class ConsoleWidget(QtGui.QPlainTextEdit): | |
14 | """ Base class for console-type widgets. This class is mainly concerned with |
|
13 | """ Base class for console-type widgets. This class is mainly concerned with | |
15 | dealing with the prompt, keeping the cursor inside the editing line, and |
|
14 | dealing with the prompt, keeping the cursor inside the editing line, and | |
16 | handling ANSI escape sequences. |
|
15 | handling ANSI escape sequences. | |
17 | """ |
|
16 | """ | |
18 |
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17 | |||
19 | # Whether to process ANSI escape codes. |
|
18 | # Whether to process ANSI escape codes. | |
20 | ansi_codes = True |
|
19 | ansi_codes = True | |
21 |
|
20 | |||
22 | # The maximum number of lines of text before truncation. |
|
21 | # The maximum number of lines of text before truncation. | |
23 | buffer_size = 500 |
|
22 | buffer_size = 500 | |
24 |
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23 | |||
25 | # Whether to use a CompletionWidget or plain text output for tab completion. |
|
24 | # Whether to use a CompletionWidget or plain text output for tab completion. | |
26 | gui_completion = True |
|
25 | gui_completion = True | |
27 |
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26 | |||
28 | # Whether to override ShortcutEvents for the keybindings defined by this |
|
27 | # Whether to override ShortcutEvents for the keybindings defined by this | |
29 | # widget (Ctrl+n, Ctrl+a, etc). Enable this if you want this widget to take |
|
28 | # widget (Ctrl+n, Ctrl+a, etc). Enable this if you want this widget to take | |
30 | # priority (when it has focus) over, e.g., window-level menu shortcuts. |
|
29 | # priority (when it has focus) over, e.g., window-level menu shortcuts. | |
31 | override_shortcuts = False |
|
30 | override_shortcuts = False | |
32 |
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31 | |||
33 | # Protected class variables. |
|
32 | # Protected class variables. | |
34 | _ctrl_down_remap = { QtCore.Qt.Key_B : QtCore.Qt.Key_Left, |
|
33 | _ctrl_down_remap = { QtCore.Qt.Key_B : QtCore.Qt.Key_Left, | |
35 | QtCore.Qt.Key_F : QtCore.Qt.Key_Right, |
|
34 | QtCore.Qt.Key_F : QtCore.Qt.Key_Right, | |
36 | QtCore.Qt.Key_A : QtCore.Qt.Key_Home, |
|
35 | QtCore.Qt.Key_A : QtCore.Qt.Key_Home, | |
37 | QtCore.Qt.Key_E : QtCore.Qt.Key_End, |
|
36 | QtCore.Qt.Key_E : QtCore.Qt.Key_End, | |
38 | QtCore.Qt.Key_P : QtCore.Qt.Key_Up, |
|
37 | QtCore.Qt.Key_P : QtCore.Qt.Key_Up, | |
39 | QtCore.Qt.Key_N : QtCore.Qt.Key_Down, |
|
38 | QtCore.Qt.Key_N : QtCore.Qt.Key_Down, | |
40 | QtCore.Qt.Key_D : QtCore.Qt.Key_Delete, } |
|
39 | QtCore.Qt.Key_D : QtCore.Qt.Key_Delete, } | |
41 | _shortcuts = set(_ctrl_down_remap.keys() + |
|
40 | _shortcuts = set(_ctrl_down_remap.keys() + | |
42 | [ QtCore.Qt.Key_C, QtCore.Qt.Key_V ]) |
|
41 | [ QtCore.Qt.Key_C, QtCore.Qt.Key_V ]) | |
43 |
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42 | |||
44 | #--------------------------------------------------------------------------- |
|
43 | #--------------------------------------------------------------------------- | |
45 | # 'QObject' interface |
|
44 | # 'QObject' interface | |
46 | #--------------------------------------------------------------------------- |
|
45 | #--------------------------------------------------------------------------- | |
47 |
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46 | |||
48 | def __init__(self, parent=None): |
|
47 | def __init__(self, parent=None): | |
49 | QtGui.QPlainTextEdit.__init__(self, parent) |
|
48 | QtGui.QPlainTextEdit.__init__(self, parent) | |
50 |
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49 | |||
51 | # Initialize protected variables. Some variables contain useful state |
|
50 | # Initialize protected variables. Some variables contain useful state | |
52 | # information for subclasses; they should be considered read-only. |
|
51 | # information for subclasses; they should be considered read-only. | |
53 | self._ansi_processor = QtAnsiCodeProcessor() |
|
52 | self._ansi_processor = QtAnsiCodeProcessor() | |
54 | self._completion_widget = CompletionWidget(self) |
|
53 | self._completion_widget = CompletionWidget(self) | |
55 | self._continuation_prompt = '> ' |
|
54 | self._continuation_prompt = '> ' | |
56 | self._continuation_prompt_html = None |
|
55 | self._continuation_prompt_html = None | |
57 | self._executing = False |
|
56 | self._executing = False | |
58 | self._prompt = '' |
|
57 | self._prompt = '' | |
59 | self._prompt_html = None |
|
58 | self._prompt_html = None | |
60 | self._prompt_pos = 0 |
|
59 | self._prompt_pos = 0 | |
61 | self._reading = False |
|
60 | self._reading = False | |
62 | self._reading_callback = None |
|
61 | self._reading_callback = None | |
63 | self._tab_width = 8 |
|
62 | self._tab_width = 8 | |
64 |
|
63 | |||
65 | # Set a monospaced font. |
|
64 | # Set a monospaced font. | |
66 | self.reset_font() |
|
65 | self.reset_font() | |
67 |
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66 | |||
68 | # Define a custom context menu. |
|
67 | # Define a custom context menu. | |
69 | self._context_menu = QtGui.QMenu(self) |
|
68 | self._context_menu = QtGui.QMenu(self) | |
70 |
|
69 | |||
71 | copy_action = QtGui.QAction('Copy', self) |
|
70 | copy_action = QtGui.QAction('Copy', self) | |
72 | copy_action.triggered.connect(self.copy) |
|
71 | copy_action.triggered.connect(self.copy) | |
73 | self.copyAvailable.connect(copy_action.setEnabled) |
|
72 | self.copyAvailable.connect(copy_action.setEnabled) | |
74 | self._context_menu.addAction(copy_action) |
|
73 | self._context_menu.addAction(copy_action) | |
75 |
|
74 | |||
76 | self._paste_action = QtGui.QAction('Paste', self) |
|
75 | self._paste_action = QtGui.QAction('Paste', self) | |
77 | self._paste_action.triggered.connect(self.paste) |
|
76 | self._paste_action.triggered.connect(self.paste) | |
78 | self._context_menu.addAction(self._paste_action) |
|
77 | self._context_menu.addAction(self._paste_action) | |
79 | self._context_menu.addSeparator() |
|
78 | self._context_menu.addSeparator() | |
80 |
|
79 | |||
81 | select_all_action = QtGui.QAction('Select All', self) |
|
80 | select_all_action = QtGui.QAction('Select All', self) | |
82 | select_all_action.triggered.connect(self.selectAll) |
|
81 | select_all_action.triggered.connect(self.selectAll) | |
83 | self._context_menu.addAction(select_all_action) |
|
82 | self._context_menu.addAction(select_all_action) | |
84 |
|
83 | |||
85 | def event(self, event): |
|
84 | def event(self, event): | |
86 | """ Reimplemented to override shortcuts, if necessary. |
|
85 | """ Reimplemented to override shortcuts, if necessary. | |
87 | """ |
|
86 | """ | |
88 | # On Mac OS, it is always unnecessary to override shortcuts, hence the |
|
87 | # On Mac OS, it is always unnecessary to override shortcuts, hence the | |
89 | # check below. Users should just use the Control key instead of the |
|
88 | # check below. Users should just use the Control key instead of the | |
90 | # Command key. |
|
89 | # Command key. | |
91 | if self.override_shortcuts and \ |
|
90 | if self.override_shortcuts and \ | |
92 | sys.platform != 'darwin' and \ |
|
91 | sys.platform != 'darwin' and \ | |
93 | event.type() == QtCore.QEvent.ShortcutOverride and \ |
|
92 | event.type() == QtCore.QEvent.ShortcutOverride and \ | |
94 | self._control_down(event.modifiers()) and \ |
|
93 | self._control_down(event.modifiers()) and \ | |
95 | event.key() in self._shortcuts: |
|
94 | event.key() in self._shortcuts: | |
96 | event.accept() |
|
95 | event.accept() | |
97 | return True |
|
96 | return True | |
98 | else: |
|
97 | else: | |
99 | return QtGui.QPlainTextEdit.event(self, event) |
|
98 | return QtGui.QPlainTextEdit.event(self, event) | |
100 |
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99 | |||
101 | #--------------------------------------------------------------------------- |
|
100 | #--------------------------------------------------------------------------- | |
102 | # 'QWidget' interface |
|
101 | # 'QWidget' interface | |
103 | #--------------------------------------------------------------------------- |
|
102 | #--------------------------------------------------------------------------- | |
104 |
|
103 | |||
105 | def contextMenuEvent(self, event): |
|
104 | def contextMenuEvent(self, event): | |
106 | """ Reimplemented to create a menu without destructive actions like |
|
105 | """ Reimplemented to create a menu without destructive actions like | |
107 | 'Cut' and 'Delete'. |
|
106 | 'Cut' and 'Delete'. | |
108 | """ |
|
107 | """ | |
109 | clipboard_empty = QtGui.QApplication.clipboard().text().isEmpty() |
|
108 | clipboard_empty = QtGui.QApplication.clipboard().text().isEmpty() | |
110 | self._paste_action.setEnabled(not clipboard_empty) |
|
109 | self._paste_action.setEnabled(not clipboard_empty) | |
111 |
|
110 | |||
112 | self._context_menu.exec_(event.globalPos()) |
|
111 | self._context_menu.exec_(event.globalPos()) | |
113 |
|
112 | |||
114 | def dragMoveEvent(self, event): |
|
113 | def dragMoveEvent(self, event): | |
115 | """ Reimplemented to disable moving text by drag and drop. |
|
114 | """ Reimplemented to disable moving text by drag and drop. | |
116 | """ |
|
115 | """ | |
117 | event.ignore() |
|
116 | event.ignore() | |
118 |
|
117 | |||
119 | def keyPressEvent(self, event): |
|
118 | def keyPressEvent(self, event): | |
120 | """ Reimplemented to create a console-like interface. |
|
119 | """ Reimplemented to create a console-like interface. | |
121 | """ |
|
120 | """ | |
122 | intercepted = False |
|
121 | intercepted = False | |
123 | cursor = self.textCursor() |
|
122 | cursor = self.textCursor() | |
124 | position = cursor.position() |
|
123 | position = cursor.position() | |
125 | key = event.key() |
|
124 | key = event.key() | |
126 | ctrl_down = self._control_down(event.modifiers()) |
|
125 | ctrl_down = self._control_down(event.modifiers()) | |
127 | alt_down = event.modifiers() & QtCore.Qt.AltModifier |
|
126 | alt_down = event.modifiers() & QtCore.Qt.AltModifier | |
128 | shift_down = event.modifiers() & QtCore.Qt.ShiftModifier |
|
127 | shift_down = event.modifiers() & QtCore.Qt.ShiftModifier | |
129 |
|
128 | |||
130 | # Even though we have reimplemented 'paste', the C++ level slot is still |
|
129 | # Even though we have reimplemented 'paste', the C++ level slot is still | |
131 | # called by Qt. So we intercept the key press here. |
|
130 | # called by Qt. So we intercept the key press here. | |
132 | if event.matches(QtGui.QKeySequence.Paste): |
|
131 | if event.matches(QtGui.QKeySequence.Paste): | |
133 | self.paste() |
|
132 | self.paste() | |
134 | intercepted = True |
|
133 | intercepted = True | |
135 |
|
134 | |||
136 | elif ctrl_down: |
|
135 | elif ctrl_down: | |
137 | if key in self._ctrl_down_remap: |
|
136 | if key in self._ctrl_down_remap: | |
138 | ctrl_down = False |
|
137 | ctrl_down = False | |
139 | key = self._ctrl_down_remap[key] |
|
138 | key = self._ctrl_down_remap[key] | |
140 | event = QtGui.QKeyEvent(QtCore.QEvent.KeyPress, key, |
|
139 | event = QtGui.QKeyEvent(QtCore.QEvent.KeyPress, key, | |
141 | QtCore.Qt.NoModifier) |
|
140 | QtCore.Qt.NoModifier) | |
142 |
|
141 | |||
143 | elif key == QtCore.Qt.Key_K: |
|
142 | elif key == QtCore.Qt.Key_K: | |
144 | if self._in_buffer(position): |
|
143 | if self._in_buffer(position): | |
145 | cursor.movePosition(QtGui.QTextCursor.EndOfLine, |
|
144 | cursor.movePosition(QtGui.QTextCursor.EndOfLine, | |
146 | QtGui.QTextCursor.KeepAnchor) |
|
145 | QtGui.QTextCursor.KeepAnchor) | |
147 | cursor.removeSelectedText() |
|
146 | cursor.removeSelectedText() | |
148 | intercepted = True |
|
147 | intercepted = True | |
149 |
|
148 | |||
150 | elif key == QtCore.Qt.Key_X: |
|
149 | elif key == QtCore.Qt.Key_X: | |
151 | intercepted = True |
|
150 | intercepted = True | |
152 |
|
151 | |||
153 | elif key == QtCore.Qt.Key_Y: |
|
152 | elif key == QtCore.Qt.Key_Y: | |
154 | self.paste() |
|
153 | self.paste() | |
155 | intercepted = True |
|
154 | intercepted = True | |
156 |
|
155 | |||
157 | elif alt_down: |
|
156 | elif alt_down: | |
158 | if key == QtCore.Qt.Key_B: |
|
157 | if key == QtCore.Qt.Key_B: | |
159 | self.setTextCursor(self._get_word_start_cursor(position)) |
|
158 | self.setTextCursor(self._get_word_start_cursor(position)) | |
160 | intercepted = True |
|
159 | intercepted = True | |
161 |
|
160 | |||
162 | elif key == QtCore.Qt.Key_F: |
|
161 | elif key == QtCore.Qt.Key_F: | |
163 | self.setTextCursor(self._get_word_end_cursor(position)) |
|
162 | self.setTextCursor(self._get_word_end_cursor(position)) | |
164 | intercepted = True |
|
163 | intercepted = True | |
165 |
|
164 | |||
166 | elif key == QtCore.Qt.Key_Backspace: |
|
165 | elif key == QtCore.Qt.Key_Backspace: | |
167 | cursor = self._get_word_start_cursor(position) |
|
166 | cursor = self._get_word_start_cursor(position) | |
168 | cursor.setPosition(position, QtGui.QTextCursor.KeepAnchor) |
|
167 | cursor.setPosition(position, QtGui.QTextCursor.KeepAnchor) | |
169 | cursor.removeSelectedText() |
|
168 | cursor.removeSelectedText() | |
170 | intercepted = True |
|
169 | intercepted = True | |
171 |
|
170 | |||
172 | elif key == QtCore.Qt.Key_D: |
|
171 | elif key == QtCore.Qt.Key_D: | |
173 | cursor = self._get_word_end_cursor(position) |
|
172 | cursor = self._get_word_end_cursor(position) | |
174 | cursor.setPosition(position, QtGui.QTextCursor.KeepAnchor) |
|
173 | cursor.setPosition(position, QtGui.QTextCursor.KeepAnchor) | |
175 | cursor.removeSelectedText() |
|
174 | cursor.removeSelectedText() | |
176 | intercepted = True |
|
175 | intercepted = True | |
177 |
|
176 | |||
178 | if self._completion_widget.isVisible(): |
|
177 | if self._completion_widget.isVisible(): | |
179 | self._completion_widget.keyPressEvent(event) |
|
178 | self._completion_widget.keyPressEvent(event) | |
180 | intercepted = event.isAccepted() |
|
179 | intercepted = event.isAccepted() | |
181 |
|
180 | |||
182 | else: |
|
181 | else: | |
183 | if key in (QtCore.Qt.Key_Return, QtCore.Qt.Key_Enter): |
|
182 | if key in (QtCore.Qt.Key_Return, QtCore.Qt.Key_Enter): | |
184 | if self._reading: |
|
183 | if self._reading: | |
185 | self.appendPlainText('\n') |
|
184 | self.appendPlainText('\n') | |
186 | self._reading = False |
|
185 | self._reading = False | |
187 | if self._reading_callback: |
|
186 | if self._reading_callback: | |
188 | self._reading_callback() |
|
187 | self._reading_callback() | |
189 | elif not self._executing: |
|
188 | elif not self._executing: | |
190 | self.execute(interactive=True) |
|
189 | self.execute(interactive=True) | |
191 | intercepted = True |
|
190 | intercepted = True | |
192 |
|
191 | |||
193 | elif key == QtCore.Qt.Key_Up: |
|
192 | elif key == QtCore.Qt.Key_Up: | |
194 | if self._reading or not self._up_pressed(): |
|
193 | if self._reading or not self._up_pressed(): | |
195 | intercepted = True |
|
194 | intercepted = True | |
196 | else: |
|
195 | else: | |
197 | prompt_line = self._get_prompt_cursor().blockNumber() |
|
196 | prompt_line = self._get_prompt_cursor().blockNumber() | |
198 | intercepted = cursor.blockNumber() <= prompt_line |
|
197 | intercepted = cursor.blockNumber() <= prompt_line | |
199 |
|
198 | |||
200 | elif key == QtCore.Qt.Key_Down: |
|
199 | elif key == QtCore.Qt.Key_Down: | |
201 | if self._reading or not self._down_pressed(): |
|
200 | if self._reading or not self._down_pressed(): | |
202 | intercepted = True |
|
201 | intercepted = True | |
203 | else: |
|
202 | else: | |
204 | end_line = self._get_end_cursor().blockNumber() |
|
203 | end_line = self._get_end_cursor().blockNumber() | |
205 | intercepted = cursor.blockNumber() == end_line |
|
204 | intercepted = cursor.blockNumber() == end_line | |
206 |
|
205 | |||
207 | elif key == QtCore.Qt.Key_Tab: |
|
206 | elif key == QtCore.Qt.Key_Tab: | |
208 | if self._reading: |
|
207 | if self._reading: | |
209 | intercepted = False |
|
208 | intercepted = False | |
210 | else: |
|
209 | else: | |
211 | intercepted = not self._tab_pressed() |
|
210 | intercepted = not self._tab_pressed() | |
212 |
|
211 | |||
213 | elif key == QtCore.Qt.Key_Left: |
|
212 | elif key == QtCore.Qt.Key_Left: | |
214 | intercepted = not self._in_buffer(position - 1) |
|
213 | intercepted = not self._in_buffer(position - 1) | |
215 |
|
214 | |||
216 | elif key == QtCore.Qt.Key_Home: |
|
215 | elif key == QtCore.Qt.Key_Home: | |
217 | cursor.movePosition(QtGui.QTextCursor.StartOfLine) |
|
216 | cursor.movePosition(QtGui.QTextCursor.StartOfLine) | |
218 | start_pos = cursor.position() |
|
217 | start_pos = cursor.position() | |
219 | start_line = cursor.blockNumber() |
|
218 | start_line = cursor.blockNumber() | |
220 | if start_line == self._get_prompt_cursor().blockNumber(): |
|
219 | if start_line == self._get_prompt_cursor().blockNumber(): | |
221 | start_pos += len(self._prompt) |
|
220 | start_pos += len(self._prompt) | |
222 | else: |
|
221 | else: | |
223 | start_pos += len(self._continuation_prompt) |
|
222 | start_pos += len(self._continuation_prompt) | |
224 | if shift_down and self._in_buffer(position): |
|
223 | if shift_down and self._in_buffer(position): | |
225 | self._set_selection(position, start_pos) |
|
224 | self._set_selection(position, start_pos) | |
226 | else: |
|
225 | else: | |
227 | self._set_position(start_pos) |
|
226 | self._set_position(start_pos) | |
228 | intercepted = True |
|
227 | intercepted = True | |
229 |
|
228 | |||
230 | elif key == QtCore.Qt.Key_Backspace and not alt_down: |
|
229 | elif key == QtCore.Qt.Key_Backspace and not alt_down: | |
231 |
|
230 | |||
232 | # Line deletion (remove continuation prompt) |
|
231 | # Line deletion (remove continuation prompt) | |
233 | len_prompt = len(self._continuation_prompt) |
|
232 | len_prompt = len(self._continuation_prompt) | |
234 | if not self._reading and \ |
|
233 | if not self._reading and \ | |
235 | cursor.columnNumber() == len_prompt and \ |
|
234 | cursor.columnNumber() == len_prompt and \ | |
236 | position != self._prompt_pos: |
|
235 | position != self._prompt_pos: | |
237 | cursor.setPosition(position - len_prompt, |
|
236 | cursor.setPosition(position - len_prompt, | |
238 | QtGui.QTextCursor.KeepAnchor) |
|
237 | QtGui.QTextCursor.KeepAnchor) | |
239 | cursor.removeSelectedText() |
|
238 | cursor.removeSelectedText() | |
240 |
|
239 | |||
241 | # Regular backwards deletion |
|
240 | # Regular backwards deletion | |
242 | else: |
|
241 | else: | |
243 | anchor = cursor.anchor() |
|
242 | anchor = cursor.anchor() | |
244 | if anchor == position: |
|
243 | if anchor == position: | |
245 | intercepted = not self._in_buffer(position - 1) |
|
244 | intercepted = not self._in_buffer(position - 1) | |
246 | else: |
|
245 | else: | |
247 | intercepted = not self._in_buffer(min(anchor, position)) |
|
246 | intercepted = not self._in_buffer(min(anchor, position)) | |
248 |
|
247 | |||
249 | elif key == QtCore.Qt.Key_Delete: |
|
248 | elif key == QtCore.Qt.Key_Delete: | |
250 | anchor = cursor.anchor() |
|
249 | anchor = cursor.anchor() | |
251 | intercepted = not self._in_buffer(min(anchor, position)) |
|
250 | intercepted = not self._in_buffer(min(anchor, position)) | |
252 |
|
251 | |||
253 | # Don't move cursor if control is down to allow copy-paste using |
|
252 | # Don't move cursor if control is down to allow copy-paste using | |
254 | # the keyboard in any part of the buffer. |
|
253 | # the keyboard in any part of the buffer. | |
255 | if not ctrl_down: |
|
254 | if not ctrl_down: | |
256 | self._keep_cursor_in_buffer() |
|
255 | self._keep_cursor_in_buffer() | |
257 |
|
256 | |||
258 | if not intercepted: |
|
257 | if not intercepted: | |
259 | QtGui.QPlainTextEdit.keyPressEvent(self, event) |
|
258 | QtGui.QPlainTextEdit.keyPressEvent(self, event) | |
260 |
|
259 | |||
261 | #-------------------------------------------------------------------------- |
|
260 | #-------------------------------------------------------------------------- | |
262 | # 'QPlainTextEdit' interface |
|
261 | # 'QPlainTextEdit' interface | |
263 | #-------------------------------------------------------------------------- |
|
262 | #-------------------------------------------------------------------------- | |
264 |
|
263 | |||
265 | def appendHtml(self, html): |
|
264 | def appendHtml(self, html): | |
266 | """ Reimplemented to not append HTML as a new paragraph, which doesn't |
|
265 | """ Reimplemented to not append HTML as a new paragraph, which doesn't | |
267 | make sense for a console widget. |
|
266 | make sense for a console widget. | |
268 | """ |
|
267 | """ | |
269 | cursor = self._get_end_cursor() |
|
268 | cursor = self._get_end_cursor() | |
270 | cursor.insertHtml(html) |
|
269 | cursor.insertHtml(html) | |
271 |
|
270 | |||
272 | # After appending HTML, the text document "remembers" the current |
|
271 | # After appending HTML, the text document "remembers" the current | |
273 | # formatting, which means that subsequent calls to 'appendPlainText' |
|
272 | # formatting, which means that subsequent calls to 'appendPlainText' | |
274 | # will be formatted similarly, a behavior that we do not want. To |
|
273 | # will be formatted similarly, a behavior that we do not want. To | |
275 | # prevent this, we make sure that the last character has no formatting. |
|
274 | # prevent this, we make sure that the last character has no formatting. | |
276 | cursor.movePosition(QtGui.QTextCursor.Left, |
|
275 | cursor.movePosition(QtGui.QTextCursor.Left, | |
277 | QtGui.QTextCursor.KeepAnchor) |
|
276 | QtGui.QTextCursor.KeepAnchor) | |
278 | if cursor.selection().toPlainText().trimmed().isEmpty(): |
|
277 | if cursor.selection().toPlainText().trimmed().isEmpty(): | |
279 | # If the last character is whitespace, it doesn't matter how it's |
|
278 | # If the last character is whitespace, it doesn't matter how it's | |
280 | # formatted, so just clear the formatting. |
|
279 | # formatted, so just clear the formatting. | |
281 | cursor.setCharFormat(QtGui.QTextCharFormat()) |
|
280 | cursor.setCharFormat(QtGui.QTextCharFormat()) | |
282 | else: |
|
281 | else: | |
283 | # Otherwise, add an unformatted space. |
|
282 | # Otherwise, add an unformatted space. | |
284 | cursor.movePosition(QtGui.QTextCursor.Right) |
|
283 | cursor.movePosition(QtGui.QTextCursor.Right) | |
285 | cursor.insertText(' ', QtGui.QTextCharFormat()) |
|
284 | cursor.insertText(' ', QtGui.QTextCharFormat()) | |
286 |
|
285 | |||
287 | def appendPlainText(self, text): |
|
286 | def appendPlainText(self, text): | |
288 | """ Reimplemented to not append text as a new paragraph, which doesn't |
|
287 | """ Reimplemented to not append text as a new paragraph, which doesn't | |
289 | make sense for a console widget. Also, if enabled, handle ANSI |
|
288 | make sense for a console widget. Also, if enabled, handle ANSI | |
290 | codes. |
|
289 | codes. | |
291 | """ |
|
290 | """ | |
292 | cursor = self._get_end_cursor() |
|
291 | cursor = self._get_end_cursor() | |
293 | if self.ansi_codes: |
|
292 | if self.ansi_codes: | |
294 | for substring in self._ansi_processor.split_string(text): |
|
293 | for substring in self._ansi_processor.split_string(text): | |
295 | format = self._ansi_processor.get_format() |
|
294 | format = self._ansi_processor.get_format() | |
296 | cursor.insertText(substring, format) |
|
295 | cursor.insertText(substring, format) | |
297 | else: |
|
296 | else: | |
298 | cursor.insertText(text) |
|
297 | cursor.insertText(text) | |
299 |
|
298 | |||
300 | def clear(self, keep_input=False): |
|
299 | def clear(self, keep_input=False): | |
301 | """ Reimplemented to write a new prompt. If 'keep_input' is set, |
|
300 | """ Reimplemented to write a new prompt. If 'keep_input' is set, | |
302 | restores the old input buffer when the new prompt is written. |
|
301 | restores the old input buffer when the new prompt is written. | |
303 | """ |
|
302 | """ | |
304 | QtGui.QPlainTextEdit.clear(self) |
|
303 | QtGui.QPlainTextEdit.clear(self) | |
305 | if keep_input: |
|
304 | if keep_input: | |
306 | input_buffer = self.input_buffer |
|
305 | input_buffer = self.input_buffer | |
307 | self._show_prompt() |
|
306 | self._show_prompt() | |
308 | if keep_input: |
|
307 | if keep_input: | |
309 | self.input_buffer = input_buffer |
|
308 | self.input_buffer = input_buffer | |
310 |
|
309 | |||
311 | def paste(self): |
|
310 | def paste(self): | |
312 | """ Reimplemented to ensure that text is pasted in the editing region. |
|
311 | """ Reimplemented to ensure that text is pasted in the editing region. | |
313 | """ |
|
312 | """ | |
314 | self._keep_cursor_in_buffer() |
|
313 | self._keep_cursor_in_buffer() | |
315 | QtGui.QPlainTextEdit.paste(self) |
|
314 | QtGui.QPlainTextEdit.paste(self) | |
316 |
|
315 | |||
317 | def print_(self, printer): |
|
316 | def print_(self, printer): | |
318 | """ Reimplemented to work around a bug in PyQt: the C++ level 'print_' |
|
317 | """ Reimplemented to work around a bug in PyQt: the C++ level 'print_' | |
319 | slot has the wrong signature. |
|
318 | slot has the wrong signature. | |
320 | """ |
|
319 | """ | |
321 | QtGui.QPlainTextEdit.print_(self, printer) |
|
320 | QtGui.QPlainTextEdit.print_(self, printer) | |
322 |
|
321 | |||
323 | #--------------------------------------------------------------------------- |
|
322 | #--------------------------------------------------------------------------- | |
324 | # 'ConsoleWidget' public interface |
|
323 | # 'ConsoleWidget' public interface | |
325 | #--------------------------------------------------------------------------- |
|
324 | #--------------------------------------------------------------------------- | |
326 |
|
325 | |||
327 | def execute(self, source=None, hidden=False, interactive=False): |
|
326 | def execute(self, source=None, hidden=False, interactive=False): | |
328 | """ Executes source or the input buffer, possibly prompting for more |
|
327 | """ Executes source or the input buffer, possibly prompting for more | |
329 | input. |
|
328 | input. | |
330 |
|
329 | |||
331 | Parameters: |
|
330 | Parameters: | |
332 | ----------- |
|
331 | ----------- | |
333 | source : str, optional |
|
332 | source : str, optional | |
334 |
|
333 | |||
335 | The source to execute. If not specified, the input buffer will be |
|
334 | The source to execute. If not specified, the input buffer will be | |
336 | used. If specified and 'hidden' is False, the input buffer will be |
|
335 | used. If specified and 'hidden' is False, the input buffer will be | |
337 | replaced with the source before execution. |
|
336 | replaced with the source before execution. | |
338 |
|
337 | |||
339 | hidden : bool, optional (default False) |
|
338 | hidden : bool, optional (default False) | |
340 |
|
339 | |||
341 | If set, no output will be shown and the prompt will not be modified. |
|
340 | If set, no output will be shown and the prompt will not be modified. | |
342 | In other words, it will be completely invisible to the user that |
|
341 | In other words, it will be completely invisible to the user that | |
343 | an execution has occurred. |
|
342 | an execution has occurred. | |
344 |
|
343 | |||
345 | interactive : bool, optional (default False) |
|
344 | interactive : bool, optional (default False) | |
346 |
|
345 | |||
347 | Whether the console is to treat the source as having been manually |
|
346 | Whether the console is to treat the source as having been manually | |
348 | entered by the user. The effect of this parameter depends on the |
|
347 | entered by the user. The effect of this parameter depends on the | |
349 | subclass implementation. |
|
348 | subclass implementation. | |
350 |
|
349 | |||
351 | Raises: |
|
350 | Raises: | |
352 | ------- |
|
351 | ------- | |
353 | RuntimeError |
|
352 | RuntimeError | |
354 | If incomplete input is given and 'hidden' is True. In this case, |
|
353 | If incomplete input is given and 'hidden' is True. In this case, | |
355 | it not possible to prompt for more input. |
|
354 | it not possible to prompt for more input. | |
356 |
|
355 | |||
357 | Returns: |
|
356 | Returns: | |
358 | -------- |
|
357 | -------- | |
359 | A boolean indicating whether the source was executed. |
|
358 | A boolean indicating whether the source was executed. | |
360 | """ |
|
359 | """ | |
361 | if not hidden: |
|
360 | if not hidden: | |
362 | if source is not None: |
|
361 | if source is not None: | |
363 | self.input_buffer = source |
|
362 | self.input_buffer = source | |
364 |
|
363 | |||
365 | self.appendPlainText('\n') |
|
364 | self.appendPlainText('\n') | |
366 | self._executing_input_buffer = self.input_buffer |
|
365 | self._executing_input_buffer = self.input_buffer | |
367 | self._executing = True |
|
366 | self._executing = True | |
368 | self._prompt_finished() |
|
367 | self._prompt_finished() | |
369 |
|
368 | |||
370 | real_source = self.input_buffer if source is None else source |
|
369 | real_source = self.input_buffer if source is None else source | |
371 | complete = self._is_complete(real_source, interactive) |
|
370 | complete = self._is_complete(real_source, interactive) | |
372 | if complete: |
|
371 | if complete: | |
373 | if not hidden: |
|
372 | if not hidden: | |
374 | # The maximum block count is only in effect during execution. |
|
373 | # The maximum block count is only in effect during execution. | |
375 | # This ensures that _prompt_pos does not become invalid due to |
|
374 | # This ensures that _prompt_pos does not become invalid due to | |
376 | # text truncation. |
|
375 | # text truncation. | |
377 | self.setMaximumBlockCount(self.buffer_size) |
|
376 | self.setMaximumBlockCount(self.buffer_size) | |
378 | self._execute(real_source, hidden) |
|
377 | self._execute(real_source, hidden) | |
379 | elif hidden: |
|
378 | elif hidden: | |
380 | raise RuntimeError('Incomplete noninteractive input: "%s"' % source) |
|
379 | raise RuntimeError('Incomplete noninteractive input: "%s"' % source) | |
381 | else: |
|
380 | else: | |
382 | self._show_continuation_prompt() |
|
381 | self._show_continuation_prompt() | |
383 |
|
382 | |||
384 | return complete |
|
383 | return complete | |
385 |
|
384 | |||
386 | def _get_input_buffer(self): |
|
385 | def _get_input_buffer(self): | |
387 | """ The text that the user has entered entered at the current prompt. |
|
386 | """ The text that the user has entered entered at the current prompt. | |
388 | """ |
|
387 | """ | |
389 | # If we're executing, the input buffer may not even exist anymore due to |
|
388 | # If we're executing, the input buffer may not even exist anymore due to | |
390 | # the limit imposed by 'buffer_size'. Therefore, we store it. |
|
389 | # the limit imposed by 'buffer_size'. Therefore, we store it. | |
391 | if self._executing: |
|
390 | if self._executing: | |
392 | return self._executing_input_buffer |
|
391 | return self._executing_input_buffer | |
393 |
|
392 | |||
394 | cursor = self._get_end_cursor() |
|
393 | cursor = self._get_end_cursor() | |
395 | cursor.setPosition(self._prompt_pos, QtGui.QTextCursor.KeepAnchor) |
|
394 | cursor.setPosition(self._prompt_pos, QtGui.QTextCursor.KeepAnchor) | |
396 | input_buffer = str(cursor.selection().toPlainText()) |
|
395 | input_buffer = str(cursor.selection().toPlainText()) | |
397 |
|
396 | |||
398 | # Strip out continuation prompts. |
|
397 | # Strip out continuation prompts. | |
399 | return input_buffer.replace('\n' + self._continuation_prompt, '\n') |
|
398 | return input_buffer.replace('\n' + self._continuation_prompt, '\n') | |
400 |
|
399 | |||
401 | def _set_input_buffer(self, string): |
|
400 | def _set_input_buffer(self, string): | |
402 | """ Replaces the text in the input buffer with 'string'. |
|
401 | """ Replaces the text in the input buffer with 'string'. | |
403 | """ |
|
402 | """ | |
404 | # Remove old text. |
|
403 | # Remove old text. | |
405 | cursor = self._get_end_cursor() |
|
404 | cursor = self._get_end_cursor() | |
406 | cursor.setPosition(self._prompt_pos, QtGui.QTextCursor.KeepAnchor) |
|
405 | cursor.setPosition(self._prompt_pos, QtGui.QTextCursor.KeepAnchor) | |
407 | cursor.removeSelectedText() |
|
406 | cursor.removeSelectedText() | |
408 |
|
407 | |||
409 | # Insert new text with continuation prompts. |
|
408 | # Insert new text with continuation prompts. | |
410 | lines = string.splitlines(True) |
|
409 | lines = string.splitlines(True) | |
411 | if lines: |
|
410 | if lines: | |
412 | self.appendPlainText(lines[0]) |
|
411 | self.appendPlainText(lines[0]) | |
413 | for i in xrange(1, len(lines)): |
|
412 | for i in xrange(1, len(lines)): | |
414 | if self._continuation_prompt_html is None: |
|
413 | if self._continuation_prompt_html is None: | |
415 | self.appendPlainText(self._continuation_prompt) |
|
414 | self.appendPlainText(self._continuation_prompt) | |
416 | else: |
|
415 | else: | |
417 | self.appendHtml(self._continuation_prompt_html) |
|
416 | self.appendHtml(self._continuation_prompt_html) | |
418 | self.appendPlainText(lines[i]) |
|
417 | self.appendPlainText(lines[i]) | |
419 | self.moveCursor(QtGui.QTextCursor.End) |
|
418 | self.moveCursor(QtGui.QTextCursor.End) | |
420 |
|
419 | |||
421 | input_buffer = property(_get_input_buffer, _set_input_buffer) |
|
420 | input_buffer = property(_get_input_buffer, _set_input_buffer) | |
422 |
|
421 | |||
423 | def _get_input_buffer_cursor_line(self): |
|
422 | def _get_input_buffer_cursor_line(self): | |
424 | """ The text in the line of the input buffer in which the user's cursor |
|
423 | """ The text in the line of the input buffer in which the user's cursor | |
425 | rests. Returns a string if there is such a line; otherwise, None. |
|
424 | rests. Returns a string if there is such a line; otherwise, None. | |
426 | """ |
|
425 | """ | |
427 | if self._executing: |
|
426 | if self._executing: | |
428 | return None |
|
427 | return None | |
429 | cursor = self.textCursor() |
|
428 | cursor = self.textCursor() | |
430 | if cursor.position() >= self._prompt_pos: |
|
429 | if cursor.position() >= self._prompt_pos: | |
431 | text = self._get_block_plain_text(cursor.block()) |
|
430 | text = self._get_block_plain_text(cursor.block()) | |
432 | if cursor.blockNumber() == self._get_prompt_cursor().blockNumber(): |
|
431 | if cursor.blockNumber() == self._get_prompt_cursor().blockNumber(): | |
433 | return text[len(self._prompt):] |
|
432 | return text[len(self._prompt):] | |
434 | else: |
|
433 | else: | |
435 | return text[len(self._continuation_prompt):] |
|
434 | return text[len(self._continuation_prompt):] | |
436 | else: |
|
435 | else: | |
437 | return None |
|
436 | return None | |
438 |
|
437 | |||
439 | input_buffer_cursor_line = property(_get_input_buffer_cursor_line) |
|
438 | input_buffer_cursor_line = property(_get_input_buffer_cursor_line) | |
440 |
|
439 | |||
441 | def _get_font(self): |
|
440 | def _get_font(self): | |
442 | """ The base font being used by the ConsoleWidget. |
|
441 | """ The base font being used by the ConsoleWidget. | |
443 | """ |
|
442 | """ | |
444 | return self.document().defaultFont() |
|
443 | return self.document().defaultFont() | |
445 |
|
444 | |||
446 | def _set_font(self, font): |
|
445 | def _set_font(self, font): | |
447 | """ Sets the base font for the ConsoleWidget to the specified QFont. |
|
446 | """ Sets the base font for the ConsoleWidget to the specified QFont. | |
448 | """ |
|
447 | """ | |
449 | font_metrics = QtGui.QFontMetrics(font) |
|
448 | font_metrics = QtGui.QFontMetrics(font) | |
450 | self.setTabStopWidth(self.tab_width * font_metrics.width(' ')) |
|
449 | self.setTabStopWidth(self.tab_width * font_metrics.width(' ')) | |
451 |
|
450 | |||
452 | self._completion_widget.setFont(font) |
|
451 | self._completion_widget.setFont(font) | |
453 | self.document().setDefaultFont(font) |
|
452 | self.document().setDefaultFont(font) | |
454 |
|
453 | |||
455 | font = property(_get_font, _set_font) |
|
454 | font = property(_get_font, _set_font) | |
456 |
|
455 | |||
457 | def reset_font(self): |
|
456 | def reset_font(self): | |
458 | """ Sets the font to the default fixed-width font for this platform. |
|
457 | """ Sets the font to the default fixed-width font for this platform. | |
459 | """ |
|
458 | """ | |
460 | if sys.platform == 'win32': |
|
459 | if sys.platform == 'win32': | |
461 | name = 'Courier' |
|
460 | name = 'Courier' | |
462 | elif sys.platform == 'darwin': |
|
461 | elif sys.platform == 'darwin': | |
463 | name = 'Monaco' |
|
462 | name = 'Monaco' | |
464 | else: |
|
463 | else: | |
465 | name = 'Monospace' |
|
464 | name = 'Monospace' | |
466 | font = QtGui.QFont(name, QtGui.qApp.font().pointSize()) |
|
465 | font = QtGui.QFont(name, QtGui.qApp.font().pointSize()) | |
467 | font.setStyleHint(QtGui.QFont.TypeWriter) |
|
466 | font.setStyleHint(QtGui.QFont.TypeWriter) | |
468 | self._set_font(font) |
|
467 | self._set_font(font) | |
469 |
|
468 | |||
470 | def _get_tab_width(self): |
|
469 | def _get_tab_width(self): | |
471 | """ The width (in terms of space characters) for tab characters. |
|
470 | """ The width (in terms of space characters) for tab characters. | |
472 | """ |
|
471 | """ | |
473 | return self._tab_width |
|
472 | return self._tab_width | |
474 |
|
473 | |||
475 | def _set_tab_width(self, tab_width): |
|
474 | def _set_tab_width(self, tab_width): | |
476 | """ Sets the width (in terms of space characters) for tab characters. |
|
475 | """ Sets the width (in terms of space characters) for tab characters. | |
477 | """ |
|
476 | """ | |
478 | font_metrics = QtGui.QFontMetrics(self.font) |
|
477 | font_metrics = QtGui.QFontMetrics(self.font) | |
479 | self.setTabStopWidth(tab_width * font_metrics.width(' ')) |
|
478 | self.setTabStopWidth(tab_width * font_metrics.width(' ')) | |
480 |
|
479 | |||
481 | self._tab_width = tab_width |
|
480 | self._tab_width = tab_width | |
482 |
|
481 | |||
483 | tab_width = property(_get_tab_width, _set_tab_width) |
|
482 | tab_width = property(_get_tab_width, _set_tab_width) | |
484 |
|
483 | |||
485 | #--------------------------------------------------------------------------- |
|
484 | #--------------------------------------------------------------------------- | |
486 | # 'ConsoleWidget' abstract interface |
|
485 | # 'ConsoleWidget' abstract interface | |
487 | #--------------------------------------------------------------------------- |
|
486 | #--------------------------------------------------------------------------- | |
488 |
|
487 | |||
489 | def _is_complete(self, source, interactive): |
|
488 | def _is_complete(self, source, interactive): | |
490 | """ Returns whether 'source' can be executed. When triggered by an |
|
489 | """ Returns whether 'source' can be executed. When triggered by an | |
491 | Enter/Return key press, 'interactive' is True; otherwise, it is |
|
490 | Enter/Return key press, 'interactive' is True; otherwise, it is | |
492 | False. |
|
491 | False. | |
493 | """ |
|
492 | """ | |
494 | raise NotImplementedError |
|
493 | raise NotImplementedError | |
495 |
|
494 | |||
496 | def _execute(self, source, hidden): |
|
495 | def _execute(self, source, hidden): | |
497 | """ Execute 'source'. If 'hidden', do not show any output. |
|
496 | """ Execute 'source'. If 'hidden', do not show any output. | |
498 | """ |
|
497 | """ | |
499 | raise NotImplementedError |
|
498 | raise NotImplementedError | |
500 |
|
499 | |||
501 | def _prompt_started_hook(self): |
|
500 | def _prompt_started_hook(self): | |
502 | """ Called immediately after a new prompt is displayed. |
|
501 | """ Called immediately after a new prompt is displayed. | |
503 | """ |
|
502 | """ | |
504 | pass |
|
503 | pass | |
505 |
|
504 | |||
506 | def _prompt_finished_hook(self): |
|
505 | def _prompt_finished_hook(self): | |
507 | """ Called immediately after a prompt is finished, i.e. when some input |
|
506 | """ Called immediately after a prompt is finished, i.e. when some input | |
508 | will be processed and a new prompt displayed. |
|
507 | will be processed and a new prompt displayed. | |
509 | """ |
|
508 | """ | |
510 | pass |
|
509 | pass | |
511 |
|
510 | |||
512 | def _up_pressed(self): |
|
511 | def _up_pressed(self): | |
513 | """ Called when the up key is pressed. Returns whether to continue |
|
512 | """ Called when the up key is pressed. Returns whether to continue | |
514 | processing the event. |
|
513 | processing the event. | |
515 | """ |
|
514 | """ | |
516 | return True |
|
515 | return True | |
517 |
|
516 | |||
518 | def _down_pressed(self): |
|
517 | def _down_pressed(self): | |
519 | """ Called when the down key is pressed. Returns whether to continue |
|
518 | """ Called when the down key is pressed. Returns whether to continue | |
520 | processing the event. |
|
519 | processing the event. | |
521 | """ |
|
520 | """ | |
522 | return True |
|
521 | return True | |
523 |
|
522 | |||
524 | def _tab_pressed(self): |
|
523 | def _tab_pressed(self): | |
525 | """ Called when the tab key is pressed. Returns whether to continue |
|
524 | """ Called when the tab key is pressed. Returns whether to continue | |
526 | processing the event. |
|
525 | processing the event. | |
527 | """ |
|
526 | """ | |
528 | return False |
|
527 | return False | |
529 |
|
528 | |||
530 | #-------------------------------------------------------------------------- |
|
529 | #-------------------------------------------------------------------------- | |
531 | # 'ConsoleWidget' protected interface |
|
530 | # 'ConsoleWidget' protected interface | |
532 | #-------------------------------------------------------------------------- |
|
531 | #-------------------------------------------------------------------------- | |
533 |
|
532 | |||
534 | def _append_html_fetching_plain_text(self, html): |
|
533 | def _append_html_fetching_plain_text(self, html): | |
535 | """ Appends 'html', then returns the plain text version of it. |
|
534 | """ Appends 'html', then returns the plain text version of it. | |
536 | """ |
|
535 | """ | |
537 | anchor = self._get_end_cursor().position() |
|
536 | anchor = self._get_end_cursor().position() | |
538 | self.appendHtml(html) |
|
537 | self.appendHtml(html) | |
539 | cursor = self._get_end_cursor() |
|
538 | cursor = self._get_end_cursor() | |
540 | cursor.setPosition(anchor, QtGui.QTextCursor.KeepAnchor) |
|
539 | cursor.setPosition(anchor, QtGui.QTextCursor.KeepAnchor) | |
541 | return str(cursor.selection().toPlainText()) |
|
540 | return str(cursor.selection().toPlainText()) | |
542 |
|
541 | |||
543 | def _append_plain_text_keeping_prompt(self, text): |
|
542 | def _append_plain_text_keeping_prompt(self, text): | |
544 | """ Writes 'text' after the current prompt, then restores the old prompt |
|
543 | """ Writes 'text' after the current prompt, then restores the old prompt | |
545 | with its old input buffer. |
|
544 | with its old input buffer. | |
546 | """ |
|
545 | """ | |
547 | input_buffer = self.input_buffer |
|
546 | input_buffer = self.input_buffer | |
548 | self.appendPlainText('\n') |
|
547 | self.appendPlainText('\n') | |
549 | self._prompt_finished() |
|
548 | self._prompt_finished() | |
550 |
|
549 | |||
551 | self.appendPlainText(text) |
|
550 | self.appendPlainText(text) | |
552 | self._show_prompt() |
|
551 | self._show_prompt() | |
553 | self.input_buffer = input_buffer |
|
552 | self.input_buffer = input_buffer | |
554 |
|
553 | |||
555 | def _control_down(self, modifiers): |
|
554 | def _control_down(self, modifiers): | |
556 | """ Given a KeyboardModifiers flags object, return whether the Control |
|
555 | """ Given a KeyboardModifiers flags object, return whether the Control | |
557 | key is down (on Mac OS, treat the Command key as a synonym for |
|
556 | key is down (on Mac OS, treat the Command key as a synonym for | |
558 | Control). |
|
557 | Control). | |
559 | """ |
|
558 | """ | |
560 | down = bool(modifiers & QtCore.Qt.ControlModifier) |
|
559 | down = bool(modifiers & QtCore.Qt.ControlModifier) | |
561 |
|
560 | |||
562 | # Note: on Mac OS, ControlModifier corresponds to the Command key while |
|
561 | # Note: on Mac OS, ControlModifier corresponds to the Command key while | |
563 | # MetaModifier corresponds to the Control key. |
|
562 | # MetaModifier corresponds to the Control key. | |
564 | if sys.platform == 'darwin': |
|
563 | if sys.platform == 'darwin': | |
565 | down = down ^ bool(modifiers & QtCore.Qt.MetaModifier) |
|
564 | down = down ^ bool(modifiers & QtCore.Qt.MetaModifier) | |
566 |
|
565 | |||
567 | return down |
|
566 | return down | |
568 |
|
567 | |||
569 | def _complete_with_items(self, cursor, items): |
|
568 | def _complete_with_items(self, cursor, items): | |
570 | """ Performs completion with 'items' at the specified cursor location. |
|
569 | """ Performs completion with 'items' at the specified cursor location. | |
571 | """ |
|
570 | """ | |
572 | if len(items) == 1: |
|
571 | if len(items) == 1: | |
573 | cursor.setPosition(self.textCursor().position(), |
|
572 | cursor.setPosition(self.textCursor().position(), | |
574 | QtGui.QTextCursor.KeepAnchor) |
|
573 | QtGui.QTextCursor.KeepAnchor) | |
575 | cursor.insertText(items[0]) |
|
574 | cursor.insertText(items[0]) | |
576 | elif len(items) > 1: |
|
575 | elif len(items) > 1: | |
577 | if self.gui_completion: |
|
576 | if self.gui_completion: | |
578 | self._completion_widget.show_items(cursor, items) |
|
577 | self._completion_widget.show_items(cursor, items) | |
579 | else: |
|
578 | else: | |
580 | text = self.format_as_columns(items) |
|
579 | text = self.format_as_columns(items) | |
581 | self._append_plain_text_keeping_prompt(text) |
|
580 | self._append_plain_text_keeping_prompt(text) | |
582 |
|
581 | |||
583 |
def format_as_columns(self, items, separator=' ' |
|
582 | def format_as_columns(self, items, separator=' '): | |
584 | """ Transform a list of strings into a single string with columns. |
|
583 | """ Transform a list of strings into a single string with columns. | |
585 |
|
584 | |||
586 | Parameters |
|
585 | Parameters | |
587 | ---------- |
|
586 | ---------- | |
588 | items : sequence [str] |
|
587 | items : sequence [str] | |
589 | The strings to process. |
|
588 | The strings to process. | |
590 |
|
589 | |||
591 | separator : str, optional [default is two spaces] |
|
590 | separator : str, optional [default is two spaces] | |
592 | The string that separates columns. |
|
591 | The string that separates columns. | |
593 |
|
592 | |||
594 | vertical: bool, optional [default True] |
|
|||
595 | If set, consecutive items will be arranged from top to bottom, then |
|
|||
596 | from left to right. Otherwise, consecutive items will be aranged |
|
|||
597 | from left to right, then from top to bottom. |
|
|||
598 |
|
||||
599 | Returns |
|
593 | Returns | |
600 | ------- |
|
594 | ------- | |
601 | The formatted string. |
|
595 | The formatted string. | |
602 | """ |
|
596 | """ | |
|
597 | # Note: this code is adapted from columnize 0.3.2. | |||
|
598 | # See http://code.google.com/p/pycolumnize/ | |||
|
599 | ||||
603 | font_metrics = QtGui.QFontMetrics(self.font) |
|
600 | font_metrics = QtGui.QFontMetrics(self.font) | |
604 | width = self.width() / font_metrics.width(' ') |
|
601 | displaywidth = max(5, (self.width() / font_metrics.width(' ')) - 1) | |
605 | return columnize(items, displaywidth=width, |
|
602 | ||
606 | colsep=separator, arrange_vertical=vertical) |
|
603 | # Some degenerate cases | |
|
604 | size = len(items) | |||
|
605 | if size == 0: | |||
|
606 | return "\n" | |||
|
607 | elif size == 1: | |||
|
608 | return '%s\n' % str(items[0]) | |||
|
609 | ||||
|
610 | # Try every row count from 1 upwards | |||
|
611 | array_index = lambda nrows, row, col: nrows*col + row | |||
|
612 | for nrows in range(1, size): | |||
|
613 | ncols = (size + nrows - 1) // nrows | |||
|
614 | colwidths = [] | |||
|
615 | totwidth = -len(separator) | |||
|
616 | for col in range(ncols): | |||
|
617 | # Get max column width for this column | |||
|
618 | colwidth = 0 | |||
|
619 | for row in range(nrows): | |||
|
620 | i = array_index(nrows, row, col) | |||
|
621 | if i >= size: break | |||
|
622 | x = items[i] | |||
|
623 | colwidth = max(colwidth, len(x)) | |||
|
624 | colwidths.append(colwidth) | |||
|
625 | totwidth += colwidth + len(separator) | |||
|
626 | if totwidth > displaywidth: | |||
|
627 | break | |||
|
628 | if totwidth <= displaywidth: | |||
|
629 | break | |||
|
630 | ||||
|
631 | # The smallest number of rows computed and the max widths for each | |||
|
632 | # column has been obtained. Now we just have to format each of the rows. | |||
|
633 | string = '' | |||
|
634 | for row in range(nrows): | |||
|
635 | texts = [] | |||
|
636 | for col in range(ncols): | |||
|
637 | i = row + nrows*col | |||
|
638 | if i >= size: | |||
|
639 | texts.append('') | |||
|
640 | else: | |||
|
641 | texts.append(items[i]) | |||
|
642 | while texts and not texts[-1]: | |||
|
643 | del texts[-1] | |||
|
644 | for col in range(len(texts)): | |||
|
645 | texts[col] = texts[col].ljust(colwidths[col]) | |||
|
646 | string += "%s\n" % str(separator.join(texts)) | |||
|
647 | return string | |||
607 |
|
648 | |||
608 | def _get_block_plain_text(self, block): |
|
649 | def _get_block_plain_text(self, block): | |
609 | """ Given a QTextBlock, return its unformatted text. |
|
650 | """ Given a QTextBlock, return its unformatted text. | |
610 | """ |
|
651 | """ | |
611 | cursor = QtGui.QTextCursor(block) |
|
652 | cursor = QtGui.QTextCursor(block) | |
612 | cursor.movePosition(QtGui.QTextCursor.StartOfBlock) |
|
653 | cursor.movePosition(QtGui.QTextCursor.StartOfBlock) | |
613 | cursor.movePosition(QtGui.QTextCursor.EndOfBlock, |
|
654 | cursor.movePosition(QtGui.QTextCursor.EndOfBlock, | |
614 | QtGui.QTextCursor.KeepAnchor) |
|
655 | QtGui.QTextCursor.KeepAnchor) | |
615 | return str(cursor.selection().toPlainText()) |
|
656 | return str(cursor.selection().toPlainText()) | |
616 |
|
657 | |||
617 | def _get_end_cursor(self): |
|
658 | def _get_end_cursor(self): | |
618 | """ Convenience method that returns a cursor for the last character. |
|
659 | """ Convenience method that returns a cursor for the last character. | |
619 | """ |
|
660 | """ | |
620 | cursor = self.textCursor() |
|
661 | cursor = self.textCursor() | |
621 | cursor.movePosition(QtGui.QTextCursor.End) |
|
662 | cursor.movePosition(QtGui.QTextCursor.End) | |
622 | return cursor |
|
663 | return cursor | |
623 |
|
664 | |||
624 | def _get_prompt_cursor(self): |
|
665 | def _get_prompt_cursor(self): | |
625 | """ Convenience method that returns a cursor for the prompt position. |
|
666 | """ Convenience method that returns a cursor for the prompt position. | |
626 | """ |
|
667 | """ | |
627 | cursor = self.textCursor() |
|
668 | cursor = self.textCursor() | |
628 | cursor.setPosition(self._prompt_pos) |
|
669 | cursor.setPosition(self._prompt_pos) | |
629 | return cursor |
|
670 | return cursor | |
630 |
|
671 | |||
631 | def _get_selection_cursor(self, start, end): |
|
672 | def _get_selection_cursor(self, start, end): | |
632 | """ Convenience method that returns a cursor with text selected between |
|
673 | """ Convenience method that returns a cursor with text selected between | |
633 | the positions 'start' and 'end'. |
|
674 | the positions 'start' and 'end'. | |
634 | """ |
|
675 | """ | |
635 | cursor = self.textCursor() |
|
676 | cursor = self.textCursor() | |
636 | cursor.setPosition(start) |
|
677 | cursor.setPosition(start) | |
637 | cursor.setPosition(end, QtGui.QTextCursor.KeepAnchor) |
|
678 | cursor.setPosition(end, QtGui.QTextCursor.KeepAnchor) | |
638 | return cursor |
|
679 | return cursor | |
639 |
|
680 | |||
640 | def _get_word_start_cursor(self, position): |
|
681 | def _get_word_start_cursor(self, position): | |
641 | """ Find the start of the word to the left the given position. If a |
|
682 | """ Find the start of the word to the left the given position. If a | |
642 | sequence of non-word characters precedes the first word, skip over |
|
683 | sequence of non-word characters precedes the first word, skip over | |
643 | them. (This emulates the behavior of bash, emacs, etc.) |
|
684 | them. (This emulates the behavior of bash, emacs, etc.) | |
644 | """ |
|
685 | """ | |
645 | document = self.document() |
|
686 | document = self.document() | |
646 | position -= 1 |
|
687 | position -= 1 | |
647 | while self._in_buffer(position) and \ |
|
688 | while self._in_buffer(position) and \ | |
648 | not document.characterAt(position).isLetterOrNumber(): |
|
689 | not document.characterAt(position).isLetterOrNumber(): | |
649 | position -= 1 |
|
690 | position -= 1 | |
650 | while self._in_buffer(position) and \ |
|
691 | while self._in_buffer(position) and \ | |
651 | document.characterAt(position).isLetterOrNumber(): |
|
692 | document.characterAt(position).isLetterOrNumber(): | |
652 | position -= 1 |
|
693 | position -= 1 | |
653 | cursor = self.textCursor() |
|
694 | cursor = self.textCursor() | |
654 | cursor.setPosition(position + 1) |
|
695 | cursor.setPosition(position + 1) | |
655 | return cursor |
|
696 | return cursor | |
656 |
|
697 | |||
657 | def _get_word_end_cursor(self, position): |
|
698 | def _get_word_end_cursor(self, position): | |
658 | """ Find the end of the word to the right the given position. If a |
|
699 | """ Find the end of the word to the right the given position. If a | |
659 | sequence of non-word characters precedes the first word, skip over |
|
700 | sequence of non-word characters precedes the first word, skip over | |
660 | them. (This emulates the behavior of bash, emacs, etc.) |
|
701 | them. (This emulates the behavior of bash, emacs, etc.) | |
661 | """ |
|
702 | """ | |
662 | document = self.document() |
|
703 | document = self.document() | |
663 | end = self._get_end_cursor().position() |
|
704 | end = self._get_end_cursor().position() | |
664 | while position < end and \ |
|
705 | while position < end and \ | |
665 | not document.characterAt(position).isLetterOrNumber(): |
|
706 | not document.characterAt(position).isLetterOrNumber(): | |
666 | position += 1 |
|
707 | position += 1 | |
667 | while position < end and \ |
|
708 | while position < end and \ | |
668 | document.characterAt(position).isLetterOrNumber(): |
|
709 | document.characterAt(position).isLetterOrNumber(): | |
669 | position += 1 |
|
710 | position += 1 | |
670 | cursor = self.textCursor() |
|
711 | cursor = self.textCursor() | |
671 | cursor.setPosition(position) |
|
712 | cursor.setPosition(position) | |
672 | return cursor |
|
713 | return cursor | |
673 |
|
714 | |||
674 | def _prompt_started(self): |
|
715 | def _prompt_started(self): | |
675 | """ Called immediately after a new prompt is displayed. |
|
716 | """ Called immediately after a new prompt is displayed. | |
676 | """ |
|
717 | """ | |
677 | # Temporarily disable the maximum block count to permit undo/redo and |
|
718 | # Temporarily disable the maximum block count to permit undo/redo and | |
678 | # to ensure that the prompt position does not change due to truncation. |
|
719 | # to ensure that the prompt position does not change due to truncation. | |
679 | self.setMaximumBlockCount(0) |
|
720 | self.setMaximumBlockCount(0) | |
680 | self.setUndoRedoEnabled(True) |
|
721 | self.setUndoRedoEnabled(True) | |
681 |
|
722 | |||
682 | self.setReadOnly(False) |
|
723 | self.setReadOnly(False) | |
683 | self.moveCursor(QtGui.QTextCursor.End) |
|
724 | self.moveCursor(QtGui.QTextCursor.End) | |
684 | self.centerCursor() |
|
725 | self.centerCursor() | |
685 |
|
726 | |||
686 | self._executing = False |
|
727 | self._executing = False | |
687 | self._prompt_started_hook() |
|
728 | self._prompt_started_hook() | |
688 |
|
729 | |||
689 | def _prompt_finished(self): |
|
730 | def _prompt_finished(self): | |
690 | """ Called immediately after a prompt is finished, i.e. when some input |
|
731 | """ Called immediately after a prompt is finished, i.e. when some input | |
691 | will be processed and a new prompt displayed. |
|
732 | will be processed and a new prompt displayed. | |
692 | """ |
|
733 | """ | |
693 | self.setUndoRedoEnabled(False) |
|
734 | self.setUndoRedoEnabled(False) | |
694 | self.setReadOnly(True) |
|
735 | self.setReadOnly(True) | |
695 | self._prompt_finished_hook() |
|
736 | self._prompt_finished_hook() | |
696 |
|
737 | |||
697 | def _readline(self, prompt='', callback=None): |
|
738 | def _readline(self, prompt='', callback=None): | |
698 | """ Reads one line of input from the user. |
|
739 | """ Reads one line of input from the user. | |
699 |
|
740 | |||
700 | Parameters |
|
741 | Parameters | |
701 | ---------- |
|
742 | ---------- | |
702 | prompt : str, optional |
|
743 | prompt : str, optional | |
703 | The prompt to print before reading the line. |
|
744 | The prompt to print before reading the line. | |
704 |
|
745 | |||
705 | callback : callable, optional |
|
746 | callback : callable, optional | |
706 | A callback to execute with the read line. If not specified, input is |
|
747 | A callback to execute with the read line. If not specified, input is | |
707 | read *synchronously* and this method does not return until it has |
|
748 | read *synchronously* and this method does not return until it has | |
708 | been read. |
|
749 | been read. | |
709 |
|
750 | |||
710 | Returns |
|
751 | Returns | |
711 | ------- |
|
752 | ------- | |
712 | If a callback is specified, returns nothing. Otherwise, returns the |
|
753 | If a callback is specified, returns nothing. Otherwise, returns the | |
713 | input string with the trailing newline stripped. |
|
754 | input string with the trailing newline stripped. | |
714 | """ |
|
755 | """ | |
715 | if self._reading: |
|
756 | if self._reading: | |
716 | raise RuntimeError('Cannot read a line. Widget is already reading.') |
|
757 | raise RuntimeError('Cannot read a line. Widget is already reading.') | |
717 |
|
758 | |||
718 | if not callback and not self.isVisible(): |
|
759 | if not callback and not self.isVisible(): | |
719 | # If the user cannot see the widget, this function cannot return. |
|
760 | # If the user cannot see the widget, this function cannot return. | |
720 | raise RuntimeError('Cannot synchronously read a line if the widget' |
|
761 | raise RuntimeError('Cannot synchronously read a line if the widget' | |
721 | 'is not visible!') |
|
762 | 'is not visible!') | |
722 |
|
763 | |||
723 | self._reading = True |
|
764 | self._reading = True | |
724 | self._show_prompt(prompt, newline=False) |
|
765 | self._show_prompt(prompt, newline=False) | |
725 |
|
766 | |||
726 | if callback is None: |
|
767 | if callback is None: | |
727 | self._reading_callback = None |
|
768 | self._reading_callback = None | |
728 | while self._reading: |
|
769 | while self._reading: | |
729 | QtCore.QCoreApplication.processEvents() |
|
770 | QtCore.QCoreApplication.processEvents() | |
730 | return self.input_buffer.rstrip('\n') |
|
771 | return self.input_buffer.rstrip('\n') | |
731 |
|
772 | |||
732 | else: |
|
773 | else: | |
733 | self._reading_callback = lambda: \ |
|
774 | self._reading_callback = lambda: \ | |
734 | callback(self.input_buffer.rstrip('\n')) |
|
775 | callback(self.input_buffer.rstrip('\n')) | |
735 |
|
776 | |||
736 | def _reset(self): |
|
777 | def _reset(self): | |
737 | """ Clears the console and resets internal state variables. |
|
778 | """ Clears the console and resets internal state variables. | |
738 | """ |
|
779 | """ | |
739 | QtGui.QPlainTextEdit.clear(self) |
|
780 | QtGui.QPlainTextEdit.clear(self) | |
740 | self._executing = self._reading = False |
|
781 | self._executing = self._reading = False | |
741 |
|
782 | |||
742 | def _set_continuation_prompt(self, prompt, html=False): |
|
783 | def _set_continuation_prompt(self, prompt, html=False): | |
743 | """ Sets the continuation prompt. |
|
784 | """ Sets the continuation prompt. | |
744 |
|
785 | |||
745 | Parameters |
|
786 | Parameters | |
746 | ---------- |
|
787 | ---------- | |
747 | prompt : str |
|
788 | prompt : str | |
748 | The prompt to show when more input is needed. |
|
789 | The prompt to show when more input is needed. | |
749 |
|
790 | |||
750 | html : bool, optional (default False) |
|
791 | html : bool, optional (default False) | |
751 | If set, the prompt will be inserted as formatted HTML. Otherwise, |
|
792 | If set, the prompt will be inserted as formatted HTML. Otherwise, | |
752 | the prompt will be treated as plain text, though ANSI color codes |
|
793 | the prompt will be treated as plain text, though ANSI color codes | |
753 | will be handled. |
|
794 | will be handled. | |
754 | """ |
|
795 | """ | |
755 | if html: |
|
796 | if html: | |
756 | self._continuation_prompt_html = prompt |
|
797 | self._continuation_prompt_html = prompt | |
757 | else: |
|
798 | else: | |
758 | self._continuation_prompt = prompt |
|
799 | self._continuation_prompt = prompt | |
759 | self._continuation_prompt_html = None |
|
800 | self._continuation_prompt_html = None | |
760 |
|
801 | |||
761 | def _set_position(self, position): |
|
802 | def _set_position(self, position): | |
762 | """ Convenience method to set the position of the cursor. |
|
803 | """ Convenience method to set the position of the cursor. | |
763 | """ |
|
804 | """ | |
764 | cursor = self.textCursor() |
|
805 | cursor = self.textCursor() | |
765 | cursor.setPosition(position) |
|
806 | cursor.setPosition(position) | |
766 | self.setTextCursor(cursor) |
|
807 | self.setTextCursor(cursor) | |
767 |
|
808 | |||
768 | def _set_selection(self, start, end): |
|
809 | def _set_selection(self, start, end): | |
769 | """ Convenience method to set the current selected text. |
|
810 | """ Convenience method to set the current selected text. | |
770 | """ |
|
811 | """ | |
771 | self.setTextCursor(self._get_selection_cursor(start, end)) |
|
812 | self.setTextCursor(self._get_selection_cursor(start, end)) | |
772 |
|
813 | |||
773 | def _show_prompt(self, prompt=None, html=False, newline=True): |
|
814 | def _show_prompt(self, prompt=None, html=False, newline=True): | |
774 | """ Writes a new prompt at the end of the buffer. |
|
815 | """ Writes a new prompt at the end of the buffer. | |
775 |
|
816 | |||
776 | Parameters |
|
817 | Parameters | |
777 | ---------- |
|
818 | ---------- | |
778 | prompt : str, optional |
|
819 | prompt : str, optional | |
779 | The prompt to show. If not specified, the previous prompt is used. |
|
820 | The prompt to show. If not specified, the previous prompt is used. | |
780 |
|
821 | |||
781 | html : bool, optional (default False) |
|
822 | html : bool, optional (default False) | |
782 | Only relevant when a prompt is specified. If set, the prompt will |
|
823 | Only relevant when a prompt is specified. If set, the prompt will | |
783 | be inserted as formatted HTML. Otherwise, the prompt will be treated |
|
824 | be inserted as formatted HTML. Otherwise, the prompt will be treated | |
784 | as plain text, though ANSI color codes will be handled. |
|
825 | as plain text, though ANSI color codes will be handled. | |
785 |
|
826 | |||
786 | newline : bool, optional (default True) |
|
827 | newline : bool, optional (default True) | |
787 | If set, a new line will be written before showing the prompt if |
|
828 | If set, a new line will be written before showing the prompt if | |
788 | there is not already a newline at the end of the buffer. |
|
829 | there is not already a newline at the end of the buffer. | |
789 | """ |
|
830 | """ | |
790 | # Insert a preliminary newline, if necessary. |
|
831 | # Insert a preliminary newline, if necessary. | |
791 | if newline: |
|
832 | if newline: | |
792 | cursor = self._get_end_cursor() |
|
833 | cursor = self._get_end_cursor() | |
793 | if cursor.position() > 0: |
|
834 | if cursor.position() > 0: | |
794 | cursor.movePosition(QtGui.QTextCursor.Left, |
|
835 | cursor.movePosition(QtGui.QTextCursor.Left, | |
795 | QtGui.QTextCursor.KeepAnchor) |
|
836 | QtGui.QTextCursor.KeepAnchor) | |
796 | if str(cursor.selection().toPlainText()) != '\n': |
|
837 | if str(cursor.selection().toPlainText()) != '\n': | |
797 | self.appendPlainText('\n') |
|
838 | self.appendPlainText('\n') | |
798 |
|
839 | |||
799 | # Write the prompt. |
|
840 | # Write the prompt. | |
800 | if prompt is None: |
|
841 | if prompt is None: | |
801 | if self._prompt_html is None: |
|
842 | if self._prompt_html is None: | |
802 | self.appendPlainText(self._prompt) |
|
843 | self.appendPlainText(self._prompt) | |
803 | else: |
|
844 | else: | |
804 | self.appendHtml(self._prompt_html) |
|
845 | self.appendHtml(self._prompt_html) | |
805 | else: |
|
846 | else: | |
806 | if html: |
|
847 | if html: | |
807 | self._prompt = self._append_html_fetching_plain_text(prompt) |
|
848 | self._prompt = self._append_html_fetching_plain_text(prompt) | |
808 | self._prompt_html = prompt |
|
849 | self._prompt_html = prompt | |
809 | else: |
|
850 | else: | |
810 | self.appendPlainText(prompt) |
|
851 | self.appendPlainText(prompt) | |
811 | self._prompt = prompt |
|
852 | self._prompt = prompt | |
812 | self._prompt_html = None |
|
853 | self._prompt_html = None | |
813 |
|
854 | |||
814 | self._prompt_pos = self._get_end_cursor().position() |
|
855 | self._prompt_pos = self._get_end_cursor().position() | |
815 | self._prompt_started() |
|
856 | self._prompt_started() | |
816 |
|
857 | |||
817 | def _show_continuation_prompt(self): |
|
858 | def _show_continuation_prompt(self): | |
818 | """ Writes a new continuation prompt at the end of the buffer. |
|
859 | """ Writes a new continuation prompt at the end of the buffer. | |
819 | """ |
|
860 | """ | |
820 | if self._continuation_prompt_html is None: |
|
861 | if self._continuation_prompt_html is None: | |
821 | self.appendPlainText(self._continuation_prompt) |
|
862 | self.appendPlainText(self._continuation_prompt) | |
822 | else: |
|
863 | else: | |
823 | self._continuation_prompt = self._append_html_fetching_plain_text( |
|
864 | self._continuation_prompt = self._append_html_fetching_plain_text( | |
824 | self._continuation_prompt_html) |
|
865 | self._continuation_prompt_html) | |
825 |
|
866 | |||
826 | self._prompt_started() |
|
867 | self._prompt_started() | |
827 |
|
868 | |||
828 | def _in_buffer(self, position): |
|
869 | def _in_buffer(self, position): | |
829 | """ Returns whether the given position is inside the editing region. |
|
870 | """ Returns whether the given position is inside the editing region. | |
830 | """ |
|
871 | """ | |
831 | return position >= self._prompt_pos |
|
872 | return position >= self._prompt_pos | |
832 |
|
873 | |||
833 | def _keep_cursor_in_buffer(self): |
|
874 | def _keep_cursor_in_buffer(self): | |
834 | """ Ensures that the cursor is inside the editing region. Returns |
|
875 | """ Ensures that the cursor is inside the editing region. Returns | |
835 | whether the cursor was moved. |
|
876 | whether the cursor was moved. | |
836 | """ |
|
877 | """ | |
837 | cursor = self.textCursor() |
|
878 | cursor = self.textCursor() | |
838 | if cursor.position() < self._prompt_pos: |
|
879 | if cursor.position() < self._prompt_pos: | |
839 | cursor.movePosition(QtGui.QTextCursor.End) |
|
880 | cursor.movePosition(QtGui.QTextCursor.End) | |
840 | self.setTextCursor(cursor) |
|
881 | self.setTextCursor(cursor) | |
841 | return True |
|
882 | return True | |
842 | else: |
|
883 | else: | |
843 | return False |
|
884 | return False | |
844 |
|
885 | |||
845 |
|
886 | |||
846 | class HistoryConsoleWidget(ConsoleWidget): |
|
887 | class HistoryConsoleWidget(ConsoleWidget): | |
847 | """ A ConsoleWidget that keeps a history of the commands that have been |
|
888 | """ A ConsoleWidget that keeps a history of the commands that have been | |
848 | executed. |
|
889 | executed. | |
849 | """ |
|
890 | """ | |
850 |
|
891 | |||
851 | #--------------------------------------------------------------------------- |
|
892 | #--------------------------------------------------------------------------- | |
852 | # 'QObject' interface |
|
893 | # 'QObject' interface | |
853 | #--------------------------------------------------------------------------- |
|
894 | #--------------------------------------------------------------------------- | |
854 |
|
895 | |||
855 | def __init__(self, parent=None): |
|
896 | def __init__(self, parent=None): | |
856 | super(HistoryConsoleWidget, self).__init__(parent) |
|
897 | super(HistoryConsoleWidget, self).__init__(parent) | |
857 |
|
898 | |||
858 | self._history = [] |
|
899 | self._history = [] | |
859 | self._history_index = 0 |
|
900 | self._history_index = 0 | |
860 |
|
901 | |||
861 | #--------------------------------------------------------------------------- |
|
902 | #--------------------------------------------------------------------------- | |
862 | # 'ConsoleWidget' public interface |
|
903 | # 'ConsoleWidget' public interface | |
863 | #--------------------------------------------------------------------------- |
|
904 | #--------------------------------------------------------------------------- | |
864 |
|
905 | |||
865 | def execute(self, source=None, hidden=False, interactive=False): |
|
906 | def execute(self, source=None, hidden=False, interactive=False): | |
866 | """ Reimplemented to the store history. |
|
907 | """ Reimplemented to the store history. | |
867 | """ |
|
908 | """ | |
868 | if not hidden: |
|
909 | if not hidden: | |
869 | history = self.input_buffer if source is None else source |
|
910 | history = self.input_buffer if source is None else source | |
870 |
|
911 | |||
871 | executed = super(HistoryConsoleWidget, self).execute( |
|
912 | executed = super(HistoryConsoleWidget, self).execute( | |
872 | source, hidden, interactive) |
|
913 | source, hidden, interactive) | |
873 |
|
914 | |||
874 | if executed and not hidden: |
|
915 | if executed and not hidden: | |
875 | self._history.append(history.rstrip()) |
|
916 | self._history.append(history.rstrip()) | |
876 | self._history_index = len(self._history) |
|
917 | self._history_index = len(self._history) | |
877 |
|
918 | |||
878 | return executed |
|
919 | return executed | |
879 |
|
920 | |||
880 | #--------------------------------------------------------------------------- |
|
921 | #--------------------------------------------------------------------------- | |
881 | # 'ConsoleWidget' abstract interface |
|
922 | # 'ConsoleWidget' abstract interface | |
882 | #--------------------------------------------------------------------------- |
|
923 | #--------------------------------------------------------------------------- | |
883 |
|
924 | |||
884 | def _up_pressed(self): |
|
925 | def _up_pressed(self): | |
885 | """ Called when the up key is pressed. Returns whether to continue |
|
926 | """ Called when the up key is pressed. Returns whether to continue | |
886 | processing the event. |
|
927 | processing the event. | |
887 | """ |
|
928 | """ | |
888 | prompt_cursor = self._get_prompt_cursor() |
|
929 | prompt_cursor = self._get_prompt_cursor() | |
889 | if self.textCursor().blockNumber() == prompt_cursor.blockNumber(): |
|
930 | if self.textCursor().blockNumber() == prompt_cursor.blockNumber(): | |
890 | self.history_previous() |
|
931 | self.history_previous() | |
891 |
|
932 | |||
892 | # Go to the first line of prompt for seemless history scrolling. |
|
933 | # Go to the first line of prompt for seemless history scrolling. | |
893 | cursor = self._get_prompt_cursor() |
|
934 | cursor = self._get_prompt_cursor() | |
894 | cursor.movePosition(QtGui.QTextCursor.EndOfLine) |
|
935 | cursor.movePosition(QtGui.QTextCursor.EndOfLine) | |
895 | self.setTextCursor(cursor) |
|
936 | self.setTextCursor(cursor) | |
896 |
|
937 | |||
897 | return False |
|
938 | return False | |
898 | return True |
|
939 | return True | |
899 |
|
940 | |||
900 | def _down_pressed(self): |
|
941 | def _down_pressed(self): | |
901 | """ Called when the down key is pressed. Returns whether to continue |
|
942 | """ Called when the down key is pressed. Returns whether to continue | |
902 | processing the event. |
|
943 | processing the event. | |
903 | """ |
|
944 | """ | |
904 | end_cursor = self._get_end_cursor() |
|
945 | end_cursor = self._get_end_cursor() | |
905 | if self.textCursor().blockNumber() == end_cursor.blockNumber(): |
|
946 | if self.textCursor().blockNumber() == end_cursor.blockNumber(): | |
906 | self.history_next() |
|
947 | self.history_next() | |
907 | return False |
|
948 | return False | |
908 | return True |
|
949 | return True | |
909 |
|
950 | |||
910 | #--------------------------------------------------------------------------- |
|
951 | #--------------------------------------------------------------------------- | |
911 | # 'HistoryConsoleWidget' interface |
|
952 | # 'HistoryConsoleWidget' interface | |
912 | #--------------------------------------------------------------------------- |
|
953 | #--------------------------------------------------------------------------- | |
913 |
|
954 | |||
914 | def history_previous(self): |
|
955 | def history_previous(self): | |
915 | """ If possible, set the input buffer to the previous item in the |
|
956 | """ If possible, set the input buffer to the previous item in the | |
916 | history. |
|
957 | history. | |
917 | """ |
|
958 | """ | |
918 | if self._history_index > 0: |
|
959 | if self._history_index > 0: | |
919 | self._history_index -= 1 |
|
960 | self._history_index -= 1 | |
920 | self.input_buffer = self._history[self._history_index] |
|
961 | self.input_buffer = self._history[self._history_index] | |
921 |
|
962 | |||
922 | def history_next(self): |
|
963 | def history_next(self): | |
923 | """ Set the input buffer to the next item in the history, or a blank |
|
964 | """ Set the input buffer to the next item in the history, or a blank | |
924 | line if there is no subsequent item. |
|
965 | line if there is no subsequent item. | |
925 | """ |
|
966 | """ | |
926 | if self._history_index < len(self._history): |
|
967 | if self._history_index < len(self._history): | |
927 | self._history_index += 1 |
|
968 | self._history_index += 1 | |
928 | if self._history_index < len(self._history): |
|
969 | if self._history_index < len(self._history): | |
929 | self.input_buffer = self._history[self._history_index] |
|
970 | self.input_buffer = self._history[self._history_index] | |
930 | else: |
|
971 | else: | |
931 | self.input_buffer = '' |
|
972 | self.input_buffer = '' |
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