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