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