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@@ -1,1052 +1,1047 b'' | |||||
1 | # Standard library imports |
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1 | # Standard library imports | |
2 | import sys |
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2 | import sys | |
3 |
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3 | |||
4 | # System library imports |
|
4 | # System library imports | |
5 | from PyQt4 import QtCore, QtGui |
|
5 | from PyQt4 import QtCore, QtGui | |
6 |
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6 | |||
7 | # Local imports |
|
7 | # Local imports | |
8 | from ansi_code_processor import QtAnsiCodeProcessor |
|
8 | from ansi_code_processor import QtAnsiCodeProcessor | |
9 | from completion_widget import CompletionWidget |
|
9 | from completion_widget import CompletionWidget | |
10 |
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10 | |||
11 |
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11 | |||
12 | class ConsoleWidget(QtGui.QWidget): |
|
12 | class ConsoleWidget(QtGui.QWidget): | |
13 | """ Base class for console-type widgets. This class is mainly concerned with |
|
13 | """ Base class for console-type widgets. This class is mainly concerned with | |
14 | dealing with the prompt, keeping the cursor inside the editing line, and |
|
14 | dealing with the prompt, keeping the cursor inside the editing line, and | |
15 | handling ANSI escape sequences. |
|
15 | handling ANSI escape sequences. | |
16 | """ |
|
16 | """ | |
17 |
|
17 | |||
18 | # Whether to process ANSI escape codes. |
|
18 | # Whether to process ANSI escape codes. | |
19 | ansi_codes = True |
|
19 | ansi_codes = True | |
20 |
|
20 | |||
21 | # The maximum number of lines of text before truncation. |
|
21 | # The maximum number of lines of text before truncation. | |
22 | buffer_size = 500 |
|
22 | buffer_size = 500 | |
23 |
|
23 | |||
24 | # Whether to use a CompletionWidget or plain text output for tab completion. |
|
24 | # Whether to use a CompletionWidget or plain text output for tab completion. | |
25 | gui_completion = True |
|
25 | gui_completion = True | |
26 |
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26 | |||
27 | # Whether to override ShortcutEvents for the keybindings defined by this |
|
27 | # Whether to override ShortcutEvents for the keybindings defined by this | |
28 | # widget (Ctrl+n, Ctrl+a, etc). Enable this if you want this widget to take |
|
28 | # widget (Ctrl+n, Ctrl+a, etc). Enable this if you want this widget to take | |
29 | # priority (when it has focus) over, e.g., window-level menu shortcuts. |
|
29 | # priority (when it has focus) over, e.g., window-level menu shortcuts. | |
30 | override_shortcuts = False |
|
30 | override_shortcuts = False | |
31 |
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31 | |||
32 | # Signals that indicate ConsoleWidget state. |
|
32 | # Signals that indicate ConsoleWidget state. | |
33 | copy_available = QtCore.pyqtSignal(bool) |
|
33 | copy_available = QtCore.pyqtSignal(bool) | |
34 | redo_available = QtCore.pyqtSignal(bool) |
|
34 | redo_available = QtCore.pyqtSignal(bool) | |
35 | undo_available = QtCore.pyqtSignal(bool) |
|
35 | undo_available = QtCore.pyqtSignal(bool) | |
36 |
|
36 | |||
37 | # Protected class variables. |
|
37 | # Protected class variables. | |
38 | _ctrl_down_remap = { QtCore.Qt.Key_B : QtCore.Qt.Key_Left, |
|
38 | _ctrl_down_remap = { QtCore.Qt.Key_B : QtCore.Qt.Key_Left, | |
39 | QtCore.Qt.Key_F : QtCore.Qt.Key_Right, |
|
39 | QtCore.Qt.Key_F : QtCore.Qt.Key_Right, | |
40 | QtCore.Qt.Key_A : QtCore.Qt.Key_Home, |
|
40 | QtCore.Qt.Key_A : QtCore.Qt.Key_Home, | |
41 | QtCore.Qt.Key_E : QtCore.Qt.Key_End, |
|
41 | QtCore.Qt.Key_E : QtCore.Qt.Key_End, | |
42 | QtCore.Qt.Key_P : QtCore.Qt.Key_Up, |
|
42 | QtCore.Qt.Key_P : QtCore.Qt.Key_Up, | |
43 | QtCore.Qt.Key_N : QtCore.Qt.Key_Down, |
|
43 | QtCore.Qt.Key_N : QtCore.Qt.Key_Down, | |
44 | QtCore.Qt.Key_D : QtCore.Qt.Key_Delete, } |
|
44 | QtCore.Qt.Key_D : QtCore.Qt.Key_Delete, } | |
45 | _shortcuts = set(_ctrl_down_remap.keys() + |
|
45 | _shortcuts = set(_ctrl_down_remap.keys() + | |
46 | [ QtCore.Qt.Key_C, QtCore.Qt.Key_V ]) |
|
46 | [ QtCore.Qt.Key_C, QtCore.Qt.Key_V ]) | |
47 |
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47 | |||
48 | #--------------------------------------------------------------------------- |
|
48 | #--------------------------------------------------------------------------- | |
49 | # 'QObject' interface |
|
49 | # 'QObject' interface | |
50 | #--------------------------------------------------------------------------- |
|
50 | #--------------------------------------------------------------------------- | |
51 |
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51 | |||
52 | def __init__(self, kind='plain', parent=None): |
|
52 | def __init__(self, kind='plain', parent=None): | |
53 | """ Create a ConsoleWidget. |
|
53 | """ Create a ConsoleWidget. | |
54 |
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54 | |||
55 | Parameters |
|
55 | Parameters | |
56 | ---------- |
|
56 | ---------- | |
57 | kind : str, optional [default 'plain'] |
|
57 | kind : str, optional [default 'plain'] | |
58 | The type of text widget to use. Valid values are 'plain', which |
|
58 | The type of text widget to use. Valid values are 'plain', which | |
59 | specifies a QPlainTextEdit, and 'rich', which specifies an |
|
59 | specifies a QPlainTextEdit, and 'rich', which specifies an | |
60 | QTextEdit. |
|
60 | QTextEdit. | |
61 |
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61 | |||
62 | parent : QWidget, optional [default None] |
|
62 | parent : QWidget, optional [default None] | |
63 | The parent for this widget. |
|
63 | The parent for this widget. | |
64 | """ |
|
64 | """ | |
65 | super(ConsoleWidget, self).__init__(parent) |
|
65 | super(ConsoleWidget, self).__init__(parent) | |
66 |
|
66 | |||
67 | # Create the underlying text widget. |
|
67 | # Create the underlying text widget. | |
68 | self._control = self._create_control(kind) |
|
68 | self._control = self._create_control(kind) | |
69 |
|
69 | |||
70 | # Initialize protected variables. Some variables contain useful state |
|
70 | # Initialize protected variables. Some variables contain useful state | |
71 | # information for subclasses; they should be considered read-only. |
|
71 | # information for subclasses; they should be considered read-only. | |
72 | self._ansi_processor = QtAnsiCodeProcessor() |
|
72 | self._ansi_processor = QtAnsiCodeProcessor() | |
73 | self._completion_widget = CompletionWidget(self._control) |
|
73 | self._completion_widget = CompletionWidget(self._control) | |
74 | self._continuation_prompt = '> ' |
|
74 | self._continuation_prompt = '> ' | |
75 | self._continuation_prompt_html = None |
|
75 | self._continuation_prompt_html = None | |
76 | self._executing = False |
|
76 | self._executing = False | |
77 | self._prompt = '' |
|
77 | self._prompt = '' | |
78 | self._prompt_html = None |
|
78 | self._prompt_html = None | |
79 | self._prompt_pos = 0 |
|
79 | self._prompt_pos = 0 | |
80 | self._reading = False |
|
80 | self._reading = False | |
81 | self._reading_callback = None |
|
81 | self._reading_callback = None | |
82 | self._tab_width = 8 |
|
82 | self._tab_width = 8 | |
83 |
|
83 | |||
84 | # Define a custom context menu. |
|
|||
85 | self._context_menu = self._create_context_menu() |
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|||
86 |
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||||
87 | # Set a monospaced font. |
|
84 | # Set a monospaced font. | |
88 | self.reset_font() |
|
85 | self.reset_font() | |
89 |
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86 | |||
90 | def eventFilter(self, obj, event): |
|
87 | def eventFilter(self, obj, event): | |
91 | """ Reimplemented to ensure a console-like behavior in the underlying |
|
88 | """ Reimplemented to ensure a console-like behavior in the underlying | |
92 | text widget. |
|
89 | text widget. | |
93 | """ |
|
90 | """ | |
94 | if obj == self._control: |
|
91 | if obj == self._control: | |
95 | etype = event.type() |
|
92 | etype = event.type() | |
96 |
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93 | |||
97 | # Override the default context menu with one that does not have |
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|||
98 | # destructive actions. |
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|||
99 | if etype == QtCore.QEvent.ContextMenu: |
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|||
100 | self._context_menu.exec_(event.globalPos()) |
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|||
101 | return True |
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|||
102 |
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||||
103 | # Disable moving text by drag and drop. |
|
94 | # Disable moving text by drag and drop. | |
104 |
|
|
95 | if etype == QtCore.QEvent.DragMove: | |
105 | return True |
|
96 | return True | |
106 |
|
97 | |||
107 | elif etype == QtCore.QEvent.KeyPress: |
|
98 | elif etype == QtCore.QEvent.KeyPress: | |
108 | return self._event_filter_keypress(event) |
|
99 | return self._event_filter_keypress(event) | |
109 |
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100 | |||
110 | # On Mac OS, it is always unnecessary to override shortcuts, hence |
|
101 | # On Mac OS, it is always unnecessary to override shortcuts, hence | |
111 | # the check below. Users should just use the Control key instead of |
|
102 | # the check below. Users should just use the Control key instead of | |
112 | # the Command key. |
|
103 | # the Command key. | |
113 | elif etype == QtCore.QEvent.ShortcutOverride: |
|
104 | elif etype == QtCore.QEvent.ShortcutOverride: | |
114 | if sys.platform != 'darwin' and \ |
|
105 | if sys.platform != 'darwin' and \ | |
115 | self._control_key_down(event.modifiers()) and \ |
|
106 | self._control_key_down(event.modifiers()) and \ | |
116 | event.key() in self._shortcuts: |
|
107 | event.key() in self._shortcuts: | |
117 | event.accept() |
|
108 | event.accept() | |
118 | return False |
|
109 | return False | |
119 |
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110 | |||
120 | return super(ConsoleWidget, self).eventFilter(obj, event) |
|
111 | return super(ConsoleWidget, self).eventFilter(obj, event) | |
121 |
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112 | |||
122 | #--------------------------------------------------------------------------- |
|
113 | #--------------------------------------------------------------------------- | |
123 | # 'ConsoleWidget' public interface |
|
114 | # 'ConsoleWidget' public interface | |
124 | #--------------------------------------------------------------------------- |
|
115 | #--------------------------------------------------------------------------- | |
125 |
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116 | |||
126 | def clear(self, keep_input=False): |
|
117 | def clear(self, keep_input=False): | |
127 | """ Clear the console, then write a new prompt. If 'keep_input' is set, |
|
118 | """ Clear the console, then write a new prompt. If 'keep_input' is set, | |
128 | restores the old input buffer when the new prompt is written. |
|
119 | restores the old input buffer when the new prompt is written. | |
129 | """ |
|
120 | """ | |
130 | self._control.clear() |
|
121 | self._control.clear() | |
131 | if keep_input: |
|
122 | if keep_input: | |
132 | input_buffer = self.input_buffer |
|
123 | input_buffer = self.input_buffer | |
133 | self._show_prompt() |
|
124 | self._show_prompt() | |
134 | if keep_input: |
|
125 | if keep_input: | |
135 | self.input_buffer = input_buffer |
|
126 | self.input_buffer = input_buffer | |
136 |
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127 | |||
137 | def copy(self): |
|
128 | def copy(self): | |
138 | """ Copy the current selected text to the clipboard. |
|
129 | """ Copy the current selected text to the clipboard. | |
139 | """ |
|
130 | """ | |
140 | self._control.copy() |
|
131 | self._control.copy() | |
141 |
|
132 | |||
142 | def execute(self, source=None, hidden=False, interactive=False): |
|
133 | def execute(self, source=None, hidden=False, interactive=False): | |
143 | """ Executes source or the input buffer, possibly prompting for more |
|
134 | """ Executes source or the input buffer, possibly prompting for more | |
144 | input. |
|
135 | input. | |
145 |
|
136 | |||
146 | Parameters: |
|
137 | Parameters: | |
147 | ----------- |
|
138 | ----------- | |
148 | source : str, optional |
|
139 | source : str, optional | |
149 |
|
140 | |||
150 | The source to execute. If not specified, the input buffer will be |
|
141 | The source to execute. If not specified, the input buffer will be | |
151 | used. If specified and 'hidden' is False, the input buffer will be |
|
142 | used. If specified and 'hidden' is False, the input buffer will be | |
152 | replaced with the source before execution. |
|
143 | replaced with the source before execution. | |
153 |
|
144 | |||
154 | hidden : bool, optional (default False) |
|
145 | hidden : bool, optional (default False) | |
155 |
|
146 | |||
156 | If set, no output will be shown and the prompt will not be modified. |
|
147 | If set, no output will be shown and the prompt will not be modified. | |
157 | In other words, it will be completely invisible to the user that |
|
148 | In other words, it will be completely invisible to the user that | |
158 | an execution has occurred. |
|
149 | an execution has occurred. | |
159 |
|
150 | |||
160 | interactive : bool, optional (default False) |
|
151 | interactive : bool, optional (default False) | |
161 |
|
152 | |||
162 | Whether the console is to treat the source as having been manually |
|
153 | Whether the console is to treat the source as having been manually | |
163 | entered by the user. The effect of this parameter depends on the |
|
154 | entered by the user. The effect of this parameter depends on the | |
164 | subclass implementation. |
|
155 | subclass implementation. | |
165 |
|
156 | |||
166 | Raises: |
|
157 | Raises: | |
167 | ------- |
|
158 | ------- | |
168 | RuntimeError |
|
159 | RuntimeError | |
169 | If incomplete input is given and 'hidden' is True. In this case, |
|
160 | If incomplete input is given and 'hidden' is True. In this case, | |
170 | it not possible to prompt for more input. |
|
161 | it not possible to prompt for more input. | |
171 |
|
162 | |||
172 | Returns: |
|
163 | Returns: | |
173 | -------- |
|
164 | -------- | |
174 | A boolean indicating whether the source was executed. |
|
165 | A boolean indicating whether the source was executed. | |
175 | """ |
|
166 | """ | |
176 | if not hidden: |
|
167 | if not hidden: | |
177 | if source is not None: |
|
168 | if source is not None: | |
178 | self.input_buffer = source |
|
169 | self.input_buffer = source | |
179 |
|
170 | |||
180 | self._append_plain_text('\n') |
|
171 | self._append_plain_text('\n') | |
181 | self._executing_input_buffer = self.input_buffer |
|
172 | self._executing_input_buffer = self.input_buffer | |
182 | self._executing = True |
|
173 | self._executing = True | |
183 | self._prompt_finished() |
|
174 | self._prompt_finished() | |
184 |
|
175 | |||
185 | real_source = self.input_buffer if source is None else source |
|
176 | real_source = self.input_buffer if source is None else source | |
186 | complete = self._is_complete(real_source, interactive) |
|
177 | complete = self._is_complete(real_source, interactive) | |
187 | if complete: |
|
178 | if complete: | |
188 | if not hidden: |
|
179 | if not hidden: | |
189 | # The maximum block count is only in effect during execution. |
|
180 | # The maximum block count is only in effect during execution. | |
190 | # This ensures that _prompt_pos does not become invalid due to |
|
181 | # This ensures that _prompt_pos does not become invalid due to | |
191 | # text truncation. |
|
182 | # text truncation. | |
192 | self._control.document().setMaximumBlockCount(self.buffer_size) |
|
183 | self._control.document().setMaximumBlockCount(self.buffer_size) | |
193 | self._execute(real_source, hidden) |
|
184 | self._execute(real_source, hidden) | |
194 | elif hidden: |
|
185 | elif hidden: | |
195 | raise RuntimeError('Incomplete noninteractive input: "%s"' % source) |
|
186 | raise RuntimeError('Incomplete noninteractive input: "%s"' % source) | |
196 | else: |
|
187 | else: | |
197 | self._show_continuation_prompt() |
|
188 | self._show_continuation_prompt() | |
198 |
|
189 | |||
199 | return complete |
|
190 | return complete | |
200 |
|
191 | |||
201 | def _get_input_buffer(self): |
|
192 | def _get_input_buffer(self): | |
202 | """ The text that the user has entered entered at the current prompt. |
|
193 | """ The text that the user has entered entered at the current prompt. | |
203 | """ |
|
194 | """ | |
204 | # If we're executing, the input buffer may not even exist anymore due to |
|
195 | # If we're executing, the input buffer may not even exist anymore due to | |
205 | # the limit imposed by 'buffer_size'. Therefore, we store it. |
|
196 | # the limit imposed by 'buffer_size'. Therefore, we store it. | |
206 | if self._executing: |
|
197 | if self._executing: | |
207 | return self._executing_input_buffer |
|
198 | return self._executing_input_buffer | |
208 |
|
199 | |||
209 | cursor = self._get_end_cursor() |
|
200 | cursor = self._get_end_cursor() | |
210 | cursor.setPosition(self._prompt_pos, QtGui.QTextCursor.KeepAnchor) |
|
201 | cursor.setPosition(self._prompt_pos, QtGui.QTextCursor.KeepAnchor) | |
211 | input_buffer = str(cursor.selection().toPlainText()) |
|
202 | input_buffer = str(cursor.selection().toPlainText()) | |
212 |
|
203 | |||
213 | # Strip out continuation prompts. |
|
204 | # Strip out continuation prompts. | |
214 | return input_buffer.replace('\n' + self._continuation_prompt, '\n') |
|
205 | return input_buffer.replace('\n' + self._continuation_prompt, '\n') | |
215 |
|
206 | |||
216 | def _set_input_buffer(self, string): |
|
207 | def _set_input_buffer(self, string): | |
217 | """ Replaces the text in the input buffer with 'string'. |
|
208 | """ Replaces the text in the input buffer with 'string'. | |
218 | """ |
|
209 | """ | |
219 | # Remove old text. |
|
210 | # Remove old text. | |
220 | cursor = self._get_end_cursor() |
|
211 | cursor = self._get_end_cursor() | |
221 | cursor.setPosition(self._prompt_pos, QtGui.QTextCursor.KeepAnchor) |
|
212 | cursor.setPosition(self._prompt_pos, QtGui.QTextCursor.KeepAnchor) | |
222 | cursor.removeSelectedText() |
|
213 | cursor.removeSelectedText() | |
223 |
|
214 | |||
224 | # Insert new text with continuation prompts. |
|
215 | # Insert new text with continuation prompts. | |
225 | lines = string.splitlines(True) |
|
216 | lines = string.splitlines(True) | |
226 | if lines: |
|
217 | if lines: | |
227 | self._append_plain_text(lines[0]) |
|
218 | self._append_plain_text(lines[0]) | |
228 | for i in xrange(1, len(lines)): |
|
219 | for i in xrange(1, len(lines)): | |
229 | if self._continuation_prompt_html is None: |
|
220 | if self._continuation_prompt_html is None: | |
230 | self._append_plain_text(self._continuation_prompt) |
|
221 | self._append_plain_text(self._continuation_prompt) | |
231 | else: |
|
222 | else: | |
232 | self._append_html(self._continuation_prompt_html) |
|
223 | self._append_html(self._continuation_prompt_html) | |
233 | self._append_plain_text(lines[i]) |
|
224 | self._append_plain_text(lines[i]) | |
234 | self._control.moveCursor(QtGui.QTextCursor.End) |
|
225 | self._control.moveCursor(QtGui.QTextCursor.End) | |
235 |
|
226 | |||
236 | input_buffer = property(_get_input_buffer, _set_input_buffer) |
|
227 | input_buffer = property(_get_input_buffer, _set_input_buffer) | |
237 |
|
228 | |||
238 | def _get_input_buffer_cursor_line(self): |
|
229 | def _get_input_buffer_cursor_line(self): | |
239 | """ The text in the line of the input buffer in which the user's cursor |
|
230 | """ The text in the line of the input buffer in which the user's cursor | |
240 | rests. Returns a string if there is such a line; otherwise, None. |
|
231 | rests. Returns a string if there is such a line; otherwise, None. | |
241 | """ |
|
232 | """ | |
242 | if self._executing: |
|
233 | if self._executing: | |
243 | return None |
|
234 | return None | |
244 | cursor = self._control.textCursor() |
|
235 | cursor = self._control.textCursor() | |
245 | if cursor.position() >= self._prompt_pos: |
|
236 | if cursor.position() >= self._prompt_pos: | |
246 | text = self._get_block_plain_text(cursor.block()) |
|
237 | text = self._get_block_plain_text(cursor.block()) | |
247 | if cursor.blockNumber() == self._get_prompt_cursor().blockNumber(): |
|
238 | if cursor.blockNumber() == self._get_prompt_cursor().blockNumber(): | |
248 | return text[len(self._prompt):] |
|
239 | return text[len(self._prompt):] | |
249 | else: |
|
240 | else: | |
250 | return text[len(self._continuation_prompt):] |
|
241 | return text[len(self._continuation_prompt):] | |
251 | else: |
|
242 | else: | |
252 | return None |
|
243 | return None | |
253 |
|
244 | |||
254 | input_buffer_cursor_line = property(_get_input_buffer_cursor_line) |
|
245 | input_buffer_cursor_line = property(_get_input_buffer_cursor_line) | |
255 |
|
246 | |||
256 | def _get_font(self): |
|
247 | def _get_font(self): | |
257 | """ The base font being used by the ConsoleWidget. |
|
248 | """ The base font being used by the ConsoleWidget. | |
258 | """ |
|
249 | """ | |
259 | return self._control.document().defaultFont() |
|
250 | return self._control.document().defaultFont() | |
260 |
|
251 | |||
261 | def _set_font(self, font): |
|
252 | def _set_font(self, font): | |
262 | """ Sets the base font for the ConsoleWidget to the specified QFont. |
|
253 | """ Sets the base font for the ConsoleWidget to the specified QFont. | |
263 | """ |
|
254 | """ | |
264 | font_metrics = QtGui.QFontMetrics(font) |
|
255 | font_metrics = QtGui.QFontMetrics(font) | |
265 | self._control.setTabStopWidth(self.tab_width * font_metrics.width(' ')) |
|
256 | self._control.setTabStopWidth(self.tab_width * font_metrics.width(' ')) | |
266 |
|
257 | |||
267 | self._completion_widget.setFont(font) |
|
258 | self._completion_widget.setFont(font) | |
268 | self._control.document().setDefaultFont(font) |
|
259 | self._control.document().setDefaultFont(font) | |
269 |
|
260 | |||
270 | font = property(_get_font, _set_font) |
|
261 | font = property(_get_font, _set_font) | |
271 |
|
262 | |||
272 | def paste(self): |
|
263 | def paste(self): | |
273 | """ Paste the contents of the clipboard into the input region. |
|
264 | """ Paste the contents of the clipboard into the input region. | |
274 | """ |
|
265 | """ | |
275 | self._keep_cursor_in_buffer() |
|
266 | self._keep_cursor_in_buffer() | |
276 | self._control.paste() |
|
267 | self._control.paste() | |
277 |
|
268 | |||
278 | def print_(self, printer): |
|
269 | def print_(self, printer): | |
279 | """ Print the contents of the ConsoleWidget to the specified QPrinter. |
|
270 | """ Print the contents of the ConsoleWidget to the specified QPrinter. | |
280 | """ |
|
271 | """ | |
281 | self._control.print_(printer) |
|
272 | self._control.print_(printer) | |
282 |
|
273 | |||
283 | def redo(self): |
|
274 | def redo(self): | |
284 | """ Redo the last operation. If there is no operation to redo, nothing |
|
275 | """ Redo the last operation. If there is no operation to redo, nothing | |
285 | happens. |
|
276 | happens. | |
286 | """ |
|
277 | """ | |
287 | self._control.redo() |
|
278 | self._control.redo() | |
288 |
|
279 | |||
289 | def reset_font(self): |
|
280 | def reset_font(self): | |
290 | """ Sets the font to the default fixed-width font for this platform. |
|
281 | """ Sets the font to the default fixed-width font for this platform. | |
291 | """ |
|
282 | """ | |
292 | if sys.platform == 'win32': |
|
283 | if sys.platform == 'win32': | |
293 | name = 'Courier' |
|
284 | name = 'Courier' | |
294 | elif sys.platform == 'darwin': |
|
285 | elif sys.platform == 'darwin': | |
295 | name = 'Monaco' |
|
286 | name = 'Monaco' | |
296 | else: |
|
287 | else: | |
297 | name = 'Monospace' |
|
288 | name = 'Monospace' | |
298 | font = QtGui.QFont(name, QtGui.qApp.font().pointSize()) |
|
289 | font = QtGui.QFont(name, QtGui.qApp.font().pointSize()) | |
299 | font.setStyleHint(QtGui.QFont.TypeWriter) |
|
290 | font.setStyleHint(QtGui.QFont.TypeWriter) | |
300 | self._set_font(font) |
|
291 | self._set_font(font) | |
301 |
|
292 | |||
302 | def select_all(self): |
|
293 | def select_all(self): | |
303 | """ Selects all the text in the buffer. |
|
294 | """ Selects all the text in the buffer. | |
304 | """ |
|
295 | """ | |
305 | self._control.selectAll() |
|
296 | self._control.selectAll() | |
306 |
|
297 | |||
307 | def _get_tab_width(self): |
|
298 | def _get_tab_width(self): | |
308 | """ The width (in terms of space characters) for tab characters. |
|
299 | """ The width (in terms of space characters) for tab characters. | |
309 | """ |
|
300 | """ | |
310 | return self._tab_width |
|
301 | return self._tab_width | |
311 |
|
302 | |||
312 | def _set_tab_width(self, tab_width): |
|
303 | def _set_tab_width(self, tab_width): | |
313 | """ Sets the width (in terms of space characters) for tab characters. |
|
304 | """ Sets the width (in terms of space characters) for tab characters. | |
314 | """ |
|
305 | """ | |
315 | font_metrics = QtGui.QFontMetrics(self.font) |
|
306 | font_metrics = QtGui.QFontMetrics(self.font) | |
316 | self._control.setTabStopWidth(tab_width * font_metrics.width(' ')) |
|
307 | self._control.setTabStopWidth(tab_width * font_metrics.width(' ')) | |
317 |
|
308 | |||
318 | self._tab_width = tab_width |
|
309 | self._tab_width = tab_width | |
319 |
|
310 | |||
320 | tab_width = property(_get_tab_width, _set_tab_width) |
|
311 | tab_width = property(_get_tab_width, _set_tab_width) | |
321 |
|
312 | |||
322 | def undo(self): |
|
313 | def undo(self): | |
323 | """ Undo the last operation. If there is no operation to undo, nothing |
|
314 | """ Undo the last operation. If there is no operation to undo, nothing | |
324 | happens. |
|
315 | happens. | |
325 | """ |
|
316 | """ | |
326 | self._control.undo() |
|
317 | self._control.undo() | |
327 |
|
318 | |||
328 | #--------------------------------------------------------------------------- |
|
319 | #--------------------------------------------------------------------------- | |
329 | # 'ConsoleWidget' abstract interface |
|
320 | # 'ConsoleWidget' abstract interface | |
330 | #--------------------------------------------------------------------------- |
|
321 | #--------------------------------------------------------------------------- | |
331 |
|
322 | |||
332 | def _is_complete(self, source, interactive): |
|
323 | def _is_complete(self, source, interactive): | |
333 | """ Returns whether 'source' can be executed. When triggered by an |
|
324 | """ Returns whether 'source' can be executed. When triggered by an | |
334 | Enter/Return key press, 'interactive' is True; otherwise, it is |
|
325 | Enter/Return key press, 'interactive' is True; otherwise, it is | |
335 | False. |
|
326 | False. | |
336 | """ |
|
327 | """ | |
337 | raise NotImplementedError |
|
328 | raise NotImplementedError | |
338 |
|
329 | |||
339 | def _execute(self, source, hidden): |
|
330 | def _execute(self, source, hidden): | |
340 | """ Execute 'source'. If 'hidden', do not show any output. |
|
331 | """ Execute 'source'. If 'hidden', do not show any output. | |
341 | """ |
|
332 | """ | |
342 | raise NotImplementedError |
|
333 | raise NotImplementedError | |
343 |
|
334 | |||
344 | def _prompt_started_hook(self): |
|
335 | def _prompt_started_hook(self): | |
345 | """ Called immediately after a new prompt is displayed. |
|
336 | """ Called immediately after a new prompt is displayed. | |
346 | """ |
|
337 | """ | |
347 | pass |
|
338 | pass | |
348 |
|
339 | |||
349 | def _prompt_finished_hook(self): |
|
340 | def _prompt_finished_hook(self): | |
350 | """ Called immediately after a prompt is finished, i.e. when some input |
|
341 | """ Called immediately after a prompt is finished, i.e. when some input | |
351 | will be processed and a new prompt displayed. |
|
342 | will be processed and a new prompt displayed. | |
352 | """ |
|
343 | """ | |
353 | pass |
|
344 | pass | |
354 |
|
345 | |||
355 | def _up_pressed(self): |
|
346 | def _up_pressed(self): | |
356 | """ Called when the up key is pressed. Returns whether to continue |
|
347 | """ Called when the up key is pressed. Returns whether to continue | |
357 | processing the event. |
|
348 | processing the event. | |
358 | """ |
|
349 | """ | |
359 | return True |
|
350 | return True | |
360 |
|
351 | |||
361 | def _down_pressed(self): |
|
352 | def _down_pressed(self): | |
362 | """ Called when the down key is pressed. Returns whether to continue |
|
353 | """ Called when the down key is pressed. Returns whether to continue | |
363 | processing the event. |
|
354 | processing the event. | |
364 | """ |
|
355 | """ | |
365 | return True |
|
356 | return True | |
366 |
|
357 | |||
367 | def _tab_pressed(self): |
|
358 | def _tab_pressed(self): | |
368 | """ Called when the tab key is pressed. Returns whether to continue |
|
359 | """ Called when the tab key is pressed. Returns whether to continue | |
369 | processing the event. |
|
360 | processing the event. | |
370 | """ |
|
361 | """ | |
371 | return False |
|
362 | return False | |
372 |
|
363 | |||
373 | #-------------------------------------------------------------------------- |
|
364 | #-------------------------------------------------------------------------- | |
374 | # 'ConsoleWidget' protected interface |
|
365 | # 'ConsoleWidget' protected interface | |
375 | #-------------------------------------------------------------------------- |
|
366 | #-------------------------------------------------------------------------- | |
376 |
|
367 | |||
377 | def _append_html(self, html): |
|
368 | def _append_html(self, html): | |
378 | """ Appends html at the end of the console buffer. |
|
369 | """ Appends html at the end of the console buffer. | |
379 | """ |
|
370 | """ | |
380 | cursor = self._get_end_cursor() |
|
371 | cursor = self._get_end_cursor() | |
381 | self._insert_html(cursor, html) |
|
372 | self._insert_html(cursor, html) | |
382 |
|
373 | |||
383 | def _append_html_fetching_plain_text(self, html): |
|
374 | def _append_html_fetching_plain_text(self, html): | |
384 | """ Appends 'html', then returns the plain text version of it. |
|
375 | """ Appends 'html', then returns the plain text version of it. | |
385 | """ |
|
376 | """ | |
386 | anchor = self._get_end_cursor().position() |
|
377 | anchor = self._get_end_cursor().position() | |
387 | self._append_html(html) |
|
378 | self._append_html(html) | |
388 | cursor = self._get_end_cursor() |
|
379 | cursor = self._get_end_cursor() | |
389 | cursor.setPosition(anchor, QtGui.QTextCursor.KeepAnchor) |
|
380 | cursor.setPosition(anchor, QtGui.QTextCursor.KeepAnchor) | |
390 | return str(cursor.selection().toPlainText()) |
|
381 | return str(cursor.selection().toPlainText()) | |
391 |
|
382 | |||
392 | def _append_plain_text(self, text): |
|
383 | def _append_plain_text(self, text): | |
393 | """ Appends plain text at the end of the console buffer, processing |
|
384 | """ Appends plain text at the end of the console buffer, processing | |
394 | ANSI codes if enabled. |
|
385 | ANSI codes if enabled. | |
395 | """ |
|
386 | """ | |
396 | cursor = self._get_end_cursor() |
|
387 | cursor = self._get_end_cursor() | |
397 | if self.ansi_codes: |
|
388 | if self.ansi_codes: | |
398 | for substring in self._ansi_processor.split_string(text): |
|
389 | for substring in self._ansi_processor.split_string(text): | |
399 | format = self._ansi_processor.get_format() |
|
390 | format = self._ansi_processor.get_format() | |
400 | cursor.insertText(substring, format) |
|
391 | cursor.insertText(substring, format) | |
401 | else: |
|
392 | else: | |
402 | cursor.insertText(text) |
|
393 | cursor.insertText(text) | |
403 |
|
394 | |||
404 | def _append_plain_text_keeping_prompt(self, text): |
|
395 | def _append_plain_text_keeping_prompt(self, text): | |
405 | """ Writes 'text' after the current prompt, then restores the old prompt |
|
396 | """ Writes 'text' after the current prompt, then restores the old prompt | |
406 | with its old input buffer. |
|
397 | with its old input buffer. | |
407 | """ |
|
398 | """ | |
408 | input_buffer = self.input_buffer |
|
399 | input_buffer = self.input_buffer | |
409 | self._append_plain_text('\n') |
|
400 | self._append_plain_text('\n') | |
410 | self._prompt_finished() |
|
401 | self._prompt_finished() | |
411 |
|
402 | |||
412 | self._append_plain_text(text) |
|
403 | self._append_plain_text(text) | |
413 | self._show_prompt() |
|
404 | self._show_prompt() | |
414 | self.input_buffer = input_buffer |
|
405 | self.input_buffer = input_buffer | |
415 |
|
406 | |||
416 | def _complete_with_items(self, cursor, items): |
|
407 | def _complete_with_items(self, cursor, items): | |
417 | """ Performs completion with 'items' at the specified cursor location. |
|
408 | """ Performs completion with 'items' at the specified cursor location. | |
418 | """ |
|
409 | """ | |
419 | if len(items) == 1: |
|
410 | if len(items) == 1: | |
420 | cursor.setPosition(self._control.textCursor().position(), |
|
411 | cursor.setPosition(self._control.textCursor().position(), | |
421 | QtGui.QTextCursor.KeepAnchor) |
|
412 | QtGui.QTextCursor.KeepAnchor) | |
422 | cursor.insertText(items[0]) |
|
413 | cursor.insertText(items[0]) | |
423 | elif len(items) > 1: |
|
414 | elif len(items) > 1: | |
424 | if self.gui_completion: |
|
415 | if self.gui_completion: | |
425 | self._completion_widget.show_items(cursor, items) |
|
416 | self._completion_widget.show_items(cursor, items) | |
426 | else: |
|
417 | else: | |
427 | text = self._format_as_columns(items) |
|
418 | text = self._format_as_columns(items) | |
428 | self._append_plain_text_keeping_prompt(text) |
|
419 | self._append_plain_text_keeping_prompt(text) | |
429 |
|
420 | |||
430 | def _control_key_down(self, modifiers): |
|
421 | def _control_key_down(self, modifiers): | |
431 | """ Given a KeyboardModifiers flags object, return whether the Control |
|
422 | """ Given a KeyboardModifiers flags object, return whether the Control | |
432 | key is down (on Mac OS, treat the Command key as a synonym for |
|
423 | key is down (on Mac OS, treat the Command key as a synonym for | |
433 | Control). |
|
424 | Control). | |
434 | """ |
|
425 | """ | |
435 | down = bool(modifiers & QtCore.Qt.ControlModifier) |
|
426 | down = bool(modifiers & QtCore.Qt.ControlModifier) | |
436 |
|
427 | |||
437 | # Note: on Mac OS, ControlModifier corresponds to the Command key while |
|
428 | # Note: on Mac OS, ControlModifier corresponds to the Command key while | |
438 | # MetaModifier corresponds to the Control key. |
|
429 | # MetaModifier corresponds to the Control key. | |
439 | if sys.platform == 'darwin': |
|
430 | if sys.platform == 'darwin': | |
440 | down = down ^ bool(modifiers & QtCore.Qt.MetaModifier) |
|
431 | down = down ^ bool(modifiers & QtCore.Qt.MetaModifier) | |
441 |
|
432 | |||
442 | return down |
|
433 | return down | |
443 |
|
434 | |||
444 | def _create_context_menu(self): |
|
|||
445 | """ Creates a context menu for the underlying text widget. |
|
|||
446 | """ |
|
|||
447 | menu = QtGui.QMenu(self) |
|
|||
448 | clipboard = QtGui.QApplication.clipboard() |
|
|||
449 |
|
||||
450 | copy_action = QtGui.QAction('Copy', self) |
|
|||
451 | copy_action.triggered.connect(self.copy) |
|
|||
452 | self.copy_available.connect(copy_action.setEnabled) |
|
|||
453 | menu.addAction(copy_action) |
|
|||
454 |
|
||||
455 | paste_action = QtGui.QAction('Paste', self) |
|
|||
456 | paste_action.triggered.connect(self.paste) |
|
|||
457 | clipboard.dataChanged.connect( |
|
|||
458 | lambda: paste_action.setEnabled(not clipboard.text().isEmpty())) |
|
|||
459 | menu.addAction(paste_action) |
|
|||
460 | menu.addSeparator() |
|
|||
461 |
|
||||
462 | select_all_action = QtGui.QAction('Select All', self) |
|
|||
463 | select_all_action.triggered.connect(self.select_all) |
|
|||
464 | menu.addAction(select_all_action) |
|
|||
465 |
|
||||
466 | return menu |
|
|||
467 |
|
||||
468 | def _create_control(self, kind): |
|
435 | def _create_control(self, kind): | |
469 | """ Creates and sets the underlying text widget. |
|
436 | """ Creates and sets the underlying text widget. | |
470 | """ |
|
437 | """ | |
471 | layout = QtGui.QVBoxLayout(self) |
|
438 | layout = QtGui.QVBoxLayout(self) | |
472 | layout.setMargin(0) |
|
439 | layout.setMargin(0) | |
473 | if kind == 'plain': |
|
440 | if kind == 'plain': | |
474 | control = QtGui.QPlainTextEdit() |
|
441 | control = QtGui.QPlainTextEdit() | |
475 | elif kind == 'rich': |
|
442 | elif kind == 'rich': | |
476 | control = QtGui.QTextEdit() |
|
443 | control = QtGui.QTextEdit() | |
477 | else: |
|
444 | else: | |
478 | raise ValueError("Kind %s unknown." % repr(kind)) |
|
445 | raise ValueError("Kind %s unknown." % repr(kind)) | |
479 | layout.addWidget(control) |
|
446 | layout.addWidget(control) | |
480 |
|
447 | |||
481 | control.installEventFilter(self) |
|
448 | control.installEventFilter(self) | |
|
449 | control.setContextMenuPolicy(QtCore.Qt.CustomContextMenu) | |||
|
450 | control.customContextMenuRequested.connect(self._show_context_menu) | |||
482 | control.copyAvailable.connect(self.copy_available) |
|
451 | control.copyAvailable.connect(self.copy_available) | |
483 | control.redoAvailable.connect(self.redo_available) |
|
452 | control.redoAvailable.connect(self.redo_available) | |
484 | control.undoAvailable.connect(self.undo_available) |
|
453 | control.undoAvailable.connect(self.undo_available) | |
485 |
|
454 | |||
486 | return control |
|
455 | return control | |
487 |
|
456 | |||
488 | def _event_filter_keypress(self, event): |
|
457 | def _event_filter_keypress(self, event): | |
489 | """ Filter key events for the underlying text widget to create a |
|
458 | """ Filter key events for the underlying text widget to create a | |
490 | console-like interface. |
|
459 | console-like interface. | |
491 | """ |
|
460 | """ | |
|
461 | key = event.key() | |||
|
462 | ctrl_down = self._control_key_down(event.modifiers()) | |||
|
463 | ||||
|
464 | # If the key is remapped, return immediately. | |||
|
465 | if ctrl_down and key in self._ctrl_down_remap: | |||
|
466 | new_event = QtGui.QKeyEvent(QtCore.QEvent.KeyPress, | |||
|
467 | self._ctrl_down_remap[key], | |||
|
468 | QtCore.Qt.NoModifier) | |||
|
469 | QtGui.qApp.sendEvent(self._control, new_event) | |||
|
470 | return True | |||
|
471 | ||||
|
472 | # If the completion widget accepts the key press, return immediately. | |||
|
473 | if self._completion_widget.isVisible(): | |||
|
474 | self._completion_widget.keyPressEvent(event) | |||
|
475 | if event.isAccepted(): | |||
|
476 | return True | |||
|
477 | ||||
|
478 | # Otherwise, proceed normally and do not return early. | |||
492 | intercepted = False |
|
479 | intercepted = False | |
493 | replaced_event = None |
|
|||
494 | cursor = self._control.textCursor() |
|
480 | cursor = self._control.textCursor() | |
495 | position = cursor.position() |
|
481 | position = cursor.position() | |
496 | key = event.key() |
|
|||
497 | ctrl_down = self._control_key_down(event.modifiers()) |
|
|||
498 | alt_down = event.modifiers() & QtCore.Qt.AltModifier |
|
482 | alt_down = event.modifiers() & QtCore.Qt.AltModifier | |
499 | shift_down = event.modifiers() & QtCore.Qt.ShiftModifier |
|
483 | shift_down = event.modifiers() & QtCore.Qt.ShiftModifier | |
500 |
|
484 | |||
501 | # Even though we have reimplemented 'paste', the C++ level slot is still |
|
|||
502 | # called by Qt. So we intercept the key press here. |
|
|||
503 | if event.matches(QtGui.QKeySequence.Paste): |
|
485 | if event.matches(QtGui.QKeySequence.Paste): | |
|
486 | # Call our paste instead of the underlying text widget's. | |||
504 | self.paste() |
|
487 | self.paste() | |
505 | intercepted = True |
|
488 | intercepted = True | |
506 |
|
489 | |||
507 | elif ctrl_down: |
|
490 | elif ctrl_down: | |
508 |
if key |
|
491 | if key == QtCore.Qt.Key_K: | |
509 | ctrl_down = False |
|
|||
510 | key = self._ctrl_down_remap[key] |
|
|||
511 | replaced_event = QtGui.QKeyEvent(QtCore.QEvent.KeyPress, key, |
|
|||
512 | QtCore.Qt.NoModifier) |
|
|||
513 |
|
||||
514 | elif key == QtCore.Qt.Key_K: |
|
|||
515 | if self._in_buffer(position): |
|
492 | if self._in_buffer(position): | |
516 | cursor.movePosition(QtGui.QTextCursor.EndOfLine, |
|
493 | cursor.movePosition(QtGui.QTextCursor.EndOfLine, | |
517 | QtGui.QTextCursor.KeepAnchor) |
|
494 | QtGui.QTextCursor.KeepAnchor) | |
518 | cursor.removeSelectedText() |
|
495 | cursor.removeSelectedText() | |
519 | intercepted = True |
|
496 | intercepted = True | |
520 |
|
497 | |||
521 | elif key == QtCore.Qt.Key_X: |
|
498 | elif key == QtCore.Qt.Key_X: | |
522 | intercepted = True |
|
499 | intercepted = True | |
523 |
|
500 | |||
524 | elif key == QtCore.Qt.Key_Y: |
|
501 | elif key == QtCore.Qt.Key_Y: | |
525 | self.paste() |
|
502 | self.paste() | |
526 | intercepted = True |
|
503 | intercepted = True | |
527 |
|
504 | |||
528 | elif alt_down: |
|
505 | elif alt_down: | |
529 | if key == QtCore.Qt.Key_B: |
|
506 | if key == QtCore.Qt.Key_B: | |
530 | self._set_cursor(self._get_word_start_cursor(position)) |
|
507 | self._set_cursor(self._get_word_start_cursor(position)) | |
531 | intercepted = True |
|
508 | intercepted = True | |
532 |
|
509 | |||
533 | elif key == QtCore.Qt.Key_F: |
|
510 | elif key == QtCore.Qt.Key_F: | |
534 | self._set_cursor(self._get_word_end_cursor(position)) |
|
511 | self._set_cursor(self._get_word_end_cursor(position)) | |
535 | intercepted = True |
|
512 | intercepted = True | |
536 |
|
513 | |||
537 | elif key == QtCore.Qt.Key_Backspace: |
|
514 | elif key == QtCore.Qt.Key_Backspace: | |
538 | cursor = self._get_word_start_cursor(position) |
|
515 | cursor = self._get_word_start_cursor(position) | |
539 | cursor.setPosition(position, QtGui.QTextCursor.KeepAnchor) |
|
516 | cursor.setPosition(position, QtGui.QTextCursor.KeepAnchor) | |
540 | cursor.removeSelectedText() |
|
517 | cursor.removeSelectedText() | |
541 | intercepted = True |
|
518 | intercepted = True | |
542 |
|
519 | |||
543 | elif key == QtCore.Qt.Key_D: |
|
520 | elif key == QtCore.Qt.Key_D: | |
544 | cursor = self._get_word_end_cursor(position) |
|
521 | cursor = self._get_word_end_cursor(position) | |
545 | cursor.setPosition(position, QtGui.QTextCursor.KeepAnchor) |
|
522 | cursor.setPosition(position, QtGui.QTextCursor.KeepAnchor) | |
546 | cursor.removeSelectedText() |
|
523 | cursor.removeSelectedText() | |
547 | intercepted = True |
|
524 | intercepted = True | |
548 |
|
525 | |||
549 | if self._completion_widget.isVisible(): |
|
|||
550 | self._completion_widget.keyPressEvent(event) |
|
|||
551 | intercepted = event.isAccepted() |
|
|||
552 |
|
||||
553 | else: |
|
526 | else: | |
554 | if key in (QtCore.Qt.Key_Return, QtCore.Qt.Key_Enter): |
|
527 | if key in (QtCore.Qt.Key_Return, QtCore.Qt.Key_Enter): | |
555 | if self._reading: |
|
528 | if self._reading: | |
556 | self._append_plain_text('\n') |
|
529 | self._append_plain_text('\n') | |
557 | self._reading = False |
|
530 | self._reading = False | |
558 | if self._reading_callback: |
|
531 | if self._reading_callback: | |
559 | self._reading_callback() |
|
532 | self._reading_callback() | |
560 | elif not self._executing: |
|
533 | elif not self._executing: | |
561 | self.execute(interactive=True) |
|
534 | self.execute(interactive=True) | |
562 | intercepted = True |
|
535 | intercepted = True | |
563 |
|
536 | |||
564 | elif key == QtCore.Qt.Key_Up: |
|
537 | elif key == QtCore.Qt.Key_Up: | |
565 | if self._reading or not self._up_pressed(): |
|
538 | if self._reading or not self._up_pressed(): | |
566 | intercepted = True |
|
539 | intercepted = True | |
567 | else: |
|
540 | else: | |
568 | prompt_line = self._get_prompt_cursor().blockNumber() |
|
541 | prompt_line = self._get_prompt_cursor().blockNumber() | |
569 | intercepted = cursor.blockNumber() <= prompt_line |
|
542 | intercepted = cursor.blockNumber() <= prompt_line | |
570 |
|
543 | |||
571 | elif key == QtCore.Qt.Key_Down: |
|
544 | elif key == QtCore.Qt.Key_Down: | |
572 | if self._reading or not self._down_pressed(): |
|
545 | if self._reading or not self._down_pressed(): | |
573 | intercepted = True |
|
546 | intercepted = True | |
574 | else: |
|
547 | else: | |
575 | end_line = self._get_end_cursor().blockNumber() |
|
548 | end_line = self._get_end_cursor().blockNumber() | |
576 | intercepted = cursor.blockNumber() == end_line |
|
549 | intercepted = cursor.blockNumber() == end_line | |
577 |
|
550 | |||
578 | elif key == QtCore.Qt.Key_Tab: |
|
551 | elif key == QtCore.Qt.Key_Tab: | |
579 | if self._reading: |
|
552 | if self._reading: | |
580 | intercepted = False |
|
553 | intercepted = False | |
581 | else: |
|
554 | else: | |
582 | intercepted = not self._tab_pressed() |
|
555 | intercepted = not self._tab_pressed() | |
583 |
|
556 | |||
584 | elif key == QtCore.Qt.Key_Left: |
|
557 | elif key == QtCore.Qt.Key_Left: | |
585 | intercepted = not self._in_buffer(position - 1) |
|
558 | intercepted = not self._in_buffer(position - 1) | |
586 |
|
559 | |||
587 | elif key == QtCore.Qt.Key_Home: |
|
560 | elif key == QtCore.Qt.Key_Home: | |
588 | cursor.movePosition(QtGui.QTextCursor.StartOfLine) |
|
561 | cursor.movePosition(QtGui.QTextCursor.StartOfLine) | |
589 | start_line = cursor.blockNumber() |
|
562 | start_line = cursor.blockNumber() | |
590 | if start_line == self._get_prompt_cursor().blockNumber(): |
|
563 | if start_line == self._get_prompt_cursor().blockNumber(): | |
591 | start_pos = self._prompt_pos |
|
564 | start_pos = self._prompt_pos | |
592 | else: |
|
565 | else: | |
593 | start_pos = cursor.position() |
|
566 | start_pos = cursor.position() | |
594 | start_pos += len(self._continuation_prompt) |
|
567 | start_pos += len(self._continuation_prompt) | |
595 | if shift_down and self._in_buffer(position): |
|
568 | if shift_down and self._in_buffer(position): | |
596 | self._set_selection(position, start_pos) |
|
569 | self._set_selection(position, start_pos) | |
597 | else: |
|
570 | else: | |
598 | self._set_position(start_pos) |
|
571 | self._set_position(start_pos) | |
599 | intercepted = True |
|
572 | intercepted = True | |
600 |
|
573 | |||
601 | elif key == QtCore.Qt.Key_Backspace and not alt_down: |
|
574 | elif key == QtCore.Qt.Key_Backspace and not alt_down: | |
602 |
|
575 | |||
603 | # Line deletion (remove continuation prompt) |
|
576 | # Line deletion (remove continuation prompt) | |
604 | len_prompt = len(self._continuation_prompt) |
|
577 | len_prompt = len(self._continuation_prompt) | |
605 | if not self._reading and \ |
|
578 | if not self._reading and \ | |
606 | cursor.columnNumber() == len_prompt and \ |
|
579 | cursor.columnNumber() == len_prompt and \ | |
607 | position != self._prompt_pos: |
|
580 | position != self._prompt_pos: | |
608 | cursor.setPosition(position - len_prompt, |
|
581 | cursor.setPosition(position - len_prompt, | |
609 | QtGui.QTextCursor.KeepAnchor) |
|
582 | QtGui.QTextCursor.KeepAnchor) | |
610 | cursor.removeSelectedText() |
|
583 | cursor.removeSelectedText() | |
611 |
|
584 | |||
612 | # Regular backwards deletion |
|
585 | # Regular backwards deletion | |
613 | else: |
|
586 | else: | |
614 | anchor = cursor.anchor() |
|
587 | anchor = cursor.anchor() | |
615 | if anchor == position: |
|
588 | if anchor == position: | |
616 | intercepted = not self._in_buffer(position - 1) |
|
589 | intercepted = not self._in_buffer(position - 1) | |
617 | else: |
|
590 | else: | |
618 | intercepted = not self._in_buffer(min(anchor, position)) |
|
591 | intercepted = not self._in_buffer(min(anchor, position)) | |
619 |
|
592 | |||
620 | elif key == QtCore.Qt.Key_Delete: |
|
593 | elif key == QtCore.Qt.Key_Delete: | |
621 | anchor = cursor.anchor() |
|
594 | anchor = cursor.anchor() | |
622 | intercepted = not self._in_buffer(min(anchor, position)) |
|
595 | intercepted = not self._in_buffer(min(anchor, position)) | |
623 |
|
596 | |||
624 | # Don't move cursor if control is down to allow copy-paste using |
|
597 | # Don't move the cursor if control is down to allow copy-paste using | |
625 | # the keyboard in any part of the buffer. |
|
598 | # the keyboard in any part of the buffer. | |
626 | if not ctrl_down: |
|
599 | if not ctrl_down: | |
627 | self._keep_cursor_in_buffer() |
|
600 | self._keep_cursor_in_buffer() | |
628 |
|
601 | |||
629 | if not intercepted and replaced_event: |
|
|||
630 | QtGui.qApp.sendEvent(self._control, replaced_event) |
|
|||
631 | return intercepted |
|
602 | return intercepted | |
632 |
|
603 | |||
633 | def _format_as_columns(self, items, separator=' '): |
|
604 | def _format_as_columns(self, items, separator=' '): | |
634 | """ Transform a list of strings into a single string with columns. |
|
605 | """ Transform a list of strings into a single string with columns. | |
635 |
|
606 | |||
636 | Parameters |
|
607 | Parameters | |
637 | ---------- |
|
608 | ---------- | |
638 | items : sequence of strings |
|
609 | items : sequence of strings | |
639 | The strings to process. |
|
610 | The strings to process. | |
640 |
|
611 | |||
641 | separator : str, optional [default is two spaces] |
|
612 | separator : str, optional [default is two spaces] | |
642 | The string that separates columns. |
|
613 | The string that separates columns. | |
643 |
|
614 | |||
644 | Returns |
|
615 | Returns | |
645 | ------- |
|
616 | ------- | |
646 | The formatted string. |
|
617 | The formatted string. | |
647 | """ |
|
618 | """ | |
648 | # Note: this code is adapted from columnize 0.3.2. |
|
619 | # Note: this code is adapted from columnize 0.3.2. | |
649 | # See http://code.google.com/p/pycolumnize/ |
|
620 | # See http://code.google.com/p/pycolumnize/ | |
650 |
|
621 | |||
651 | font_metrics = QtGui.QFontMetrics(self.font) |
|
622 | font_metrics = QtGui.QFontMetrics(self.font) | |
652 | displaywidth = max(5, (self.width() / font_metrics.width(' ')) - 1) |
|
623 | displaywidth = max(5, (self.width() / font_metrics.width(' ')) - 1) | |
653 |
|
624 | |||
654 | # Some degenerate cases. |
|
625 | # Some degenerate cases. | |
655 | size = len(items) |
|
626 | size = len(items) | |
656 | if size == 0: |
|
627 | if size == 0: | |
657 | return '\n' |
|
628 | return '\n' | |
658 | elif size == 1: |
|
629 | elif size == 1: | |
659 | return '%s\n' % str(items[0]) |
|
630 | return '%s\n' % str(items[0]) | |
660 |
|
631 | |||
661 | # Try every row count from 1 upwards |
|
632 | # Try every row count from 1 upwards | |
662 | array_index = lambda nrows, row, col: nrows*col + row |
|
633 | array_index = lambda nrows, row, col: nrows*col + row | |
663 | for nrows in range(1, size): |
|
634 | for nrows in range(1, size): | |
664 | ncols = (size + nrows - 1) // nrows |
|
635 | ncols = (size + nrows - 1) // nrows | |
665 | colwidths = [] |
|
636 | colwidths = [] | |
666 | totwidth = -len(separator) |
|
637 | totwidth = -len(separator) | |
667 | for col in range(ncols): |
|
638 | for col in range(ncols): | |
668 | # Get max column width for this column |
|
639 | # Get max column width for this column | |
669 | colwidth = 0 |
|
640 | colwidth = 0 | |
670 | for row in range(nrows): |
|
641 | for row in range(nrows): | |
671 | i = array_index(nrows, row, col) |
|
642 | i = array_index(nrows, row, col) | |
672 | if i >= size: break |
|
643 | if i >= size: break | |
673 | x = items[i] |
|
644 | x = items[i] | |
674 | colwidth = max(colwidth, len(x)) |
|
645 | colwidth = max(colwidth, len(x)) | |
675 | colwidths.append(colwidth) |
|
646 | colwidths.append(colwidth) | |
676 | totwidth += colwidth + len(separator) |
|
647 | totwidth += colwidth + len(separator) | |
677 | if totwidth > displaywidth: |
|
648 | if totwidth > displaywidth: | |
678 | break |
|
649 | break | |
679 | if totwidth <= displaywidth: |
|
650 | if totwidth <= displaywidth: | |
680 | break |
|
651 | break | |
681 |
|
652 | |||
682 | # The smallest number of rows computed and the max widths for each |
|
653 | # The smallest number of rows computed and the max widths for each | |
683 | # column has been obtained. Now we just have to format each of the rows. |
|
654 | # column has been obtained. Now we just have to format each of the rows. | |
684 | string = '' |
|
655 | string = '' | |
685 | for row in range(nrows): |
|
656 | for row in range(nrows): | |
686 | texts = [] |
|
657 | texts = [] | |
687 | for col in range(ncols): |
|
658 | for col in range(ncols): | |
688 | i = row + nrows*col |
|
659 | i = row + nrows*col | |
689 | if i >= size: |
|
660 | if i >= size: | |
690 | texts.append('') |
|
661 | texts.append('') | |
691 | else: |
|
662 | else: | |
692 | texts.append(items[i]) |
|
663 | texts.append(items[i]) | |
693 | while texts and not texts[-1]: |
|
664 | while texts and not texts[-1]: | |
694 | del texts[-1] |
|
665 | del texts[-1] | |
695 | for col in range(len(texts)): |
|
666 | for col in range(len(texts)): | |
696 | texts[col] = texts[col].ljust(colwidths[col]) |
|
667 | texts[col] = texts[col].ljust(colwidths[col]) | |
697 | string += '%s\n' % str(separator.join(texts)) |
|
668 | string += '%s\n' % str(separator.join(texts)) | |
698 | return string |
|
669 | return string | |
699 |
|
670 | |||
700 | def _get_block_plain_text(self, block): |
|
671 | def _get_block_plain_text(self, block): | |
701 | """ Given a QTextBlock, return its unformatted text. |
|
672 | """ Given a QTextBlock, return its unformatted text. | |
702 | """ |
|
673 | """ | |
703 | cursor = QtGui.QTextCursor(block) |
|
674 | cursor = QtGui.QTextCursor(block) | |
704 | cursor.movePosition(QtGui.QTextCursor.StartOfBlock) |
|
675 | cursor.movePosition(QtGui.QTextCursor.StartOfBlock) | |
705 | cursor.movePosition(QtGui.QTextCursor.EndOfBlock, |
|
676 | cursor.movePosition(QtGui.QTextCursor.EndOfBlock, | |
706 | QtGui.QTextCursor.KeepAnchor) |
|
677 | QtGui.QTextCursor.KeepAnchor) | |
707 | return str(cursor.selection().toPlainText()) |
|
678 | return str(cursor.selection().toPlainText()) | |
708 |
|
679 | |||
709 | def _get_cursor(self): |
|
680 | def _get_cursor(self): | |
710 | """ Convenience method that returns a cursor for the current position. |
|
681 | """ Convenience method that returns a cursor for the current position. | |
711 | """ |
|
682 | """ | |
712 | return self._control.textCursor() |
|
683 | return self._control.textCursor() | |
713 |
|
684 | |||
714 | def _get_end_cursor(self): |
|
685 | def _get_end_cursor(self): | |
715 | """ Convenience method that returns a cursor for the last character. |
|
686 | """ Convenience method that returns a cursor for the last character. | |
716 | """ |
|
687 | """ | |
717 | cursor = self._control.textCursor() |
|
688 | cursor = self._control.textCursor() | |
718 | cursor.movePosition(QtGui.QTextCursor.End) |
|
689 | cursor.movePosition(QtGui.QTextCursor.End) | |
719 | return cursor |
|
690 | return cursor | |
720 |
|
691 | |||
721 | def _get_prompt_cursor(self): |
|
692 | def _get_prompt_cursor(self): | |
722 | """ Convenience method that returns a cursor for the prompt position. |
|
693 | """ Convenience method that returns a cursor for the prompt position. | |
723 | """ |
|
694 | """ | |
724 | cursor = self._control.textCursor() |
|
695 | cursor = self._control.textCursor() | |
725 | cursor.setPosition(self._prompt_pos) |
|
696 | cursor.setPosition(self._prompt_pos) | |
726 | return cursor |
|
697 | return cursor | |
727 |
|
698 | |||
728 | def _get_selection_cursor(self, start, end): |
|
699 | def _get_selection_cursor(self, start, end): | |
729 | """ Convenience method that returns a cursor with text selected between |
|
700 | """ Convenience method that returns a cursor with text selected between | |
730 | the positions 'start' and 'end'. |
|
701 | the positions 'start' and 'end'. | |
731 | """ |
|
702 | """ | |
732 | cursor = self._control.textCursor() |
|
703 | cursor = self._control.textCursor() | |
733 | cursor.setPosition(start) |
|
704 | cursor.setPosition(start) | |
734 | cursor.setPosition(end, QtGui.QTextCursor.KeepAnchor) |
|
705 | cursor.setPosition(end, QtGui.QTextCursor.KeepAnchor) | |
735 | return cursor |
|
706 | return cursor | |
736 |
|
707 | |||
737 | def _get_word_start_cursor(self, position): |
|
708 | def _get_word_start_cursor(self, position): | |
738 | """ Find the start of the word to the left the given position. If a |
|
709 | """ Find the start of the word to the left the given position. If a | |
739 | sequence of non-word characters precedes the first word, skip over |
|
710 | sequence of non-word characters precedes the first word, skip over | |
740 | them. (This emulates the behavior of bash, emacs, etc.) |
|
711 | them. (This emulates the behavior of bash, emacs, etc.) | |
741 | """ |
|
712 | """ | |
742 | document = self._control.document() |
|
713 | document = self._control.document() | |
743 | position -= 1 |
|
714 | position -= 1 | |
744 | while self._in_buffer(position) and \ |
|
715 | while self._in_buffer(position) and \ | |
745 | not document.characterAt(position).isLetterOrNumber(): |
|
716 | not document.characterAt(position).isLetterOrNumber(): | |
746 | position -= 1 |
|
717 | position -= 1 | |
747 | while self._in_buffer(position) and \ |
|
718 | while self._in_buffer(position) and \ | |
748 | document.characterAt(position).isLetterOrNumber(): |
|
719 | document.characterAt(position).isLetterOrNumber(): | |
749 | position -= 1 |
|
720 | position -= 1 | |
750 | cursor = self._control.textCursor() |
|
721 | cursor = self._control.textCursor() | |
751 | cursor.setPosition(position + 1) |
|
722 | cursor.setPosition(position + 1) | |
752 | return cursor |
|
723 | return cursor | |
753 |
|
724 | |||
754 | def _get_word_end_cursor(self, position): |
|
725 | def _get_word_end_cursor(self, position): | |
755 | """ Find the end of the word to the right the given position. If a |
|
726 | """ Find the end of the word to the right the given position. If a | |
756 | sequence of non-word characters precedes the first word, skip over |
|
727 | sequence of non-word characters precedes the first word, skip over | |
757 | them. (This emulates the behavior of bash, emacs, etc.) |
|
728 | them. (This emulates the behavior of bash, emacs, etc.) | |
758 | """ |
|
729 | """ | |
759 | document = self._control.document() |
|
730 | document = self._control.document() | |
760 | end = self._get_end_cursor().position() |
|
731 | end = self._get_end_cursor().position() | |
761 | while position < end and \ |
|
732 | while position < end and \ | |
762 | not document.characterAt(position).isLetterOrNumber(): |
|
733 | not document.characterAt(position).isLetterOrNumber(): | |
763 | position += 1 |
|
734 | position += 1 | |
764 | while position < end and \ |
|
735 | while position < end and \ | |
765 | document.characterAt(position).isLetterOrNumber(): |
|
736 | document.characterAt(position).isLetterOrNumber(): | |
766 | position += 1 |
|
737 | position += 1 | |
767 | cursor = self._control.textCursor() |
|
738 | cursor = self._control.textCursor() | |
768 | cursor.setPosition(position) |
|
739 | cursor.setPosition(position) | |
769 | return cursor |
|
740 | return cursor | |
770 |
|
741 | |||
771 | def _insert_html(self, cursor, html): |
|
742 | def _insert_html(self, cursor, html): | |
772 | """ Insert HTML using the specified cursor in such a way that future |
|
743 | """ Insert HTML using the specified cursor in such a way that future | |
773 | formatting is unaffected. |
|
744 | formatting is unaffected. | |
774 | """ |
|
745 | """ | |
775 | cursor.insertHtml(html) |
|
746 | cursor.insertHtml(html) | |
776 |
|
747 | |||
777 | # After inserting HTML, the text document "remembers" the current |
|
748 | # After inserting HTML, the text document "remembers" the current | |
778 | # formatting, which means that subsequent calls adding plain text |
|
749 | # formatting, which means that subsequent calls adding plain text | |
779 | # will result in similar formatting, a behavior that we do not want. To |
|
750 | # will result in similar formatting, a behavior that we do not want. To | |
780 | # prevent this, we make sure that the last character has no formatting. |
|
751 | # prevent this, we make sure that the last character has no formatting. | |
781 | cursor.movePosition(QtGui.QTextCursor.Left, |
|
752 | cursor.movePosition(QtGui.QTextCursor.Left, | |
782 | QtGui.QTextCursor.KeepAnchor) |
|
753 | QtGui.QTextCursor.KeepAnchor) | |
783 | if cursor.selection().toPlainText().trimmed().isEmpty(): |
|
754 | if cursor.selection().toPlainText().trimmed().isEmpty(): | |
784 | # If the last character is whitespace, it doesn't matter how it's |
|
755 | # If the last character is whitespace, it doesn't matter how it's | |
785 | # formatted, so just clear the formatting. |
|
756 | # formatted, so just clear the formatting. | |
786 | cursor.setCharFormat(QtGui.QTextCharFormat()) |
|
757 | cursor.setCharFormat(QtGui.QTextCharFormat()) | |
787 | else: |
|
758 | else: | |
788 | # Otherwise, add an unformatted space. |
|
759 | # Otherwise, add an unformatted space. | |
789 | cursor.movePosition(QtGui.QTextCursor.Right) |
|
760 | cursor.movePosition(QtGui.QTextCursor.Right) | |
790 | cursor.insertText(' ', QtGui.QTextCharFormat()) |
|
761 | cursor.insertText(' ', QtGui.QTextCharFormat()) | |
791 |
|
762 | |||
792 | def _in_buffer(self, position): |
|
763 | def _in_buffer(self, position): | |
793 | """ Returns whether the given position is inside the editing region. |
|
764 | """ Returns whether the given position is inside the editing region. | |
794 | """ |
|
765 | """ | |
795 | return position >= self._prompt_pos |
|
766 | return position >= self._prompt_pos | |
796 |
|
767 | |||
797 | def _keep_cursor_in_buffer(self): |
|
768 | def _keep_cursor_in_buffer(self): | |
798 | """ Ensures that the cursor is inside the editing region. Returns |
|
769 | """ Ensures that the cursor is inside the editing region. Returns | |
799 | whether the cursor was moved. |
|
770 | whether the cursor was moved. | |
800 | """ |
|
771 | """ | |
801 | cursor = self._control.textCursor() |
|
772 | cursor = self._control.textCursor() | |
802 | if cursor.position() < self._prompt_pos: |
|
773 | if cursor.position() < self._prompt_pos: | |
803 | cursor.movePosition(QtGui.QTextCursor.End) |
|
774 | cursor.movePosition(QtGui.QTextCursor.End) | |
804 | self._control.setTextCursor(cursor) |
|
775 | self._control.setTextCursor(cursor) | |
805 | return True |
|
776 | return True | |
806 | else: |
|
777 | else: | |
807 | return False |
|
778 | return False | |
808 |
|
779 | |||
809 | def _prompt_started(self): |
|
780 | def _prompt_started(self): | |
810 | """ Called immediately after a new prompt is displayed. |
|
781 | """ Called immediately after a new prompt is displayed. | |
811 | """ |
|
782 | """ | |
812 | # Temporarily disable the maximum block count to permit undo/redo and |
|
783 | # Temporarily disable the maximum block count to permit undo/redo and | |
813 | # to ensure that the prompt position does not change due to truncation. |
|
784 | # to ensure that the prompt position does not change due to truncation. | |
814 | self._control.document().setMaximumBlockCount(0) |
|
785 | self._control.document().setMaximumBlockCount(0) | |
815 | self._control.setUndoRedoEnabled(True) |
|
786 | self._control.setUndoRedoEnabled(True) | |
816 |
|
787 | |||
817 | self._control.setReadOnly(False) |
|
788 | self._control.setReadOnly(False) | |
818 | self._control.moveCursor(QtGui.QTextCursor.End) |
|
789 | self._control.moveCursor(QtGui.QTextCursor.End) | |
819 |
|
790 | |||
820 | self._executing = False |
|
791 | self._executing = False | |
821 | self._prompt_started_hook() |
|
792 | self._prompt_started_hook() | |
822 |
|
793 | |||
823 | def _prompt_finished(self): |
|
794 | def _prompt_finished(self): | |
824 | """ Called immediately after a prompt is finished, i.e. when some input |
|
795 | """ Called immediately after a prompt is finished, i.e. when some input | |
825 | will be processed and a new prompt displayed. |
|
796 | will be processed and a new prompt displayed. | |
826 | """ |
|
797 | """ | |
827 | self._control.setUndoRedoEnabled(False) |
|
798 | self._control.setUndoRedoEnabled(False) | |
828 | self._control.setReadOnly(True) |
|
799 | self._control.setReadOnly(True) | |
829 | self._prompt_finished_hook() |
|
800 | self._prompt_finished_hook() | |
830 |
|
801 | |||
831 | def _readline(self, prompt='', callback=None): |
|
802 | def _readline(self, prompt='', callback=None): | |
832 | """ Reads one line of input from the user. |
|
803 | """ Reads one line of input from the user. | |
833 |
|
804 | |||
834 | Parameters |
|
805 | Parameters | |
835 | ---------- |
|
806 | ---------- | |
836 | prompt : str, optional |
|
807 | prompt : str, optional | |
837 | The prompt to print before reading the line. |
|
808 | The prompt to print before reading the line. | |
838 |
|
809 | |||
839 | callback : callable, optional |
|
810 | callback : callable, optional | |
840 | A callback to execute with the read line. If not specified, input is |
|
811 | A callback to execute with the read line. If not specified, input is | |
841 | read *synchronously* and this method does not return until it has |
|
812 | read *synchronously* and this method does not return until it has | |
842 | been read. |
|
813 | been read. | |
843 |
|
814 | |||
844 | Returns |
|
815 | Returns | |
845 | ------- |
|
816 | ------- | |
846 | If a callback is specified, returns nothing. Otherwise, returns the |
|
817 | If a callback is specified, returns nothing. Otherwise, returns the | |
847 | input string with the trailing newline stripped. |
|
818 | input string with the trailing newline stripped. | |
848 | """ |
|
819 | """ | |
849 | if self._reading: |
|
820 | if self._reading: | |
850 | raise RuntimeError('Cannot read a line. Widget is already reading.') |
|
821 | raise RuntimeError('Cannot read a line. Widget is already reading.') | |
851 |
|
822 | |||
852 | if not callback and not self.isVisible(): |
|
823 | if not callback and not self.isVisible(): | |
853 | # If the user cannot see the widget, this function cannot return. |
|
824 | # If the user cannot see the widget, this function cannot return. | |
854 | raise RuntimeError('Cannot synchronously read a line if the widget' |
|
825 | raise RuntimeError('Cannot synchronously read a line if the widget' | |
855 | 'is not visible!') |
|
826 | 'is not visible!') | |
856 |
|
827 | |||
857 | self._reading = True |
|
828 | self._reading = True | |
858 | self._show_prompt(prompt, newline=False) |
|
829 | self._show_prompt(prompt, newline=False) | |
859 |
|
830 | |||
860 | if callback is None: |
|
831 | if callback is None: | |
861 | self._reading_callback = None |
|
832 | self._reading_callback = None | |
862 | while self._reading: |
|
833 | while self._reading: | |
863 | QtCore.QCoreApplication.processEvents() |
|
834 | QtCore.QCoreApplication.processEvents() | |
864 | return self.input_buffer.rstrip('\n') |
|
835 | return self.input_buffer.rstrip('\n') | |
865 |
|
836 | |||
866 | else: |
|
837 | else: | |
867 | self._reading_callback = lambda: \ |
|
838 | self._reading_callback = lambda: \ | |
868 | callback(self.input_buffer.rstrip('\n')) |
|
839 | callback(self.input_buffer.rstrip('\n')) | |
869 |
|
840 | |||
870 | def _reset(self): |
|
841 | def _reset(self): | |
871 | """ Clears the console and resets internal state variables. |
|
842 | """ Clears the console and resets internal state variables. | |
872 | """ |
|
843 | """ | |
873 | self._control.clear() |
|
844 | self._control.clear() | |
874 | self._executing = self._reading = False |
|
845 | self._executing = self._reading = False | |
875 |
|
846 | |||
876 | def _set_continuation_prompt(self, prompt, html=False): |
|
847 | def _set_continuation_prompt(self, prompt, html=False): | |
877 | """ Sets the continuation prompt. |
|
848 | """ Sets the continuation prompt. | |
878 |
|
849 | |||
879 | Parameters |
|
850 | Parameters | |
880 | ---------- |
|
851 | ---------- | |
881 | prompt : str |
|
852 | prompt : str | |
882 | The prompt to show when more input is needed. |
|
853 | The prompt to show when more input is needed. | |
883 |
|
854 | |||
884 | html : bool, optional (default False) |
|
855 | html : bool, optional (default False) | |
885 | If set, the prompt will be inserted as formatted HTML. Otherwise, |
|
856 | If set, the prompt will be inserted as formatted HTML. Otherwise, | |
886 | the prompt will be treated as plain text, though ANSI color codes |
|
857 | the prompt will be treated as plain text, though ANSI color codes | |
887 | will be handled. |
|
858 | will be handled. | |
888 | """ |
|
859 | """ | |
889 | if html: |
|
860 | if html: | |
890 | self._continuation_prompt_html = prompt |
|
861 | self._continuation_prompt_html = prompt | |
891 | else: |
|
862 | else: | |
892 | self._continuation_prompt = prompt |
|
863 | self._continuation_prompt = prompt | |
893 | self._continuation_prompt_html = None |
|
864 | self._continuation_prompt_html = None | |
894 |
|
865 | |||
895 | def _set_cursor(self, cursor): |
|
866 | def _set_cursor(self, cursor): | |
896 | """ Convenience method to set the current cursor. |
|
867 | """ Convenience method to set the current cursor. | |
897 | """ |
|
868 | """ | |
898 | self._control.setTextCursor(cursor) |
|
869 | self._control.setTextCursor(cursor) | |
899 |
|
870 | |||
900 | def _set_position(self, position): |
|
871 | def _set_position(self, position): | |
901 | """ Convenience method to set the position of the cursor. |
|
872 | """ Convenience method to set the position of the cursor. | |
902 | """ |
|
873 | """ | |
903 | cursor = self._control.textCursor() |
|
874 | cursor = self._control.textCursor() | |
904 | cursor.setPosition(position) |
|
875 | cursor.setPosition(position) | |
905 | self._control.setTextCursor(cursor) |
|
876 | self._control.setTextCursor(cursor) | |
906 |
|
877 | |||
907 | def _set_selection(self, start, end): |
|
878 | def _set_selection(self, start, end): | |
908 | """ Convenience method to set the current selected text. |
|
879 | """ Convenience method to set the current selected text. | |
909 | """ |
|
880 | """ | |
910 | self._control.setTextCursor(self._get_selection_cursor(start, end)) |
|
881 | self._control.setTextCursor(self._get_selection_cursor(start, end)) | |
911 |
|
882 | |||
|
883 | def _show_context_menu(self, pos): | |||
|
884 | """ Shows a context menu at the given QPoint (in widget coordinates). | |||
|
885 | """ | |||
|
886 | menu = QtGui.QMenu() | |||
|
887 | ||||
|
888 | copy_action = QtGui.QAction('Copy', menu) | |||
|
889 | copy_action.triggered.connect(self.copy) | |||
|
890 | copy_action.setEnabled(self._get_cursor().hasSelection()) | |||
|
891 | copy_action.setShortcut(QtGui.QKeySequence.Copy) | |||
|
892 | menu.addAction(copy_action) | |||
|
893 | ||||
|
894 | paste_action = QtGui.QAction('Paste', menu) | |||
|
895 | paste_action.triggered.connect(self.paste) | |||
|
896 | paste_action.setEnabled(self._control.canPaste()) | |||
|
897 | paste_action.setShortcut(QtGui.QKeySequence.Paste) | |||
|
898 | menu.addAction(paste_action) | |||
|
899 | menu.addSeparator() | |||
|
900 | ||||
|
901 | select_all_action = QtGui.QAction('Select All', menu) | |||
|
902 | select_all_action.triggered.connect(self.select_all) | |||
|
903 | menu.addAction(select_all_action) | |||
|
904 | ||||
|
905 | menu.exec_(self._control.mapToGlobal(pos)) | |||
|
906 | ||||
912 | def _show_prompt(self, prompt=None, html=False, newline=True): |
|
907 | def _show_prompt(self, prompt=None, html=False, newline=True): | |
913 | """ Writes a new prompt at the end of the buffer. |
|
908 | """ Writes a new prompt at the end of the buffer. | |
914 |
|
909 | |||
915 | Parameters |
|
910 | Parameters | |
916 | ---------- |
|
911 | ---------- | |
917 | prompt : str, optional |
|
912 | prompt : str, optional | |
918 | The prompt to show. If not specified, the previous prompt is used. |
|
913 | The prompt to show. If not specified, the previous prompt is used. | |
919 |
|
914 | |||
920 | html : bool, optional (default False) |
|
915 | html : bool, optional (default False) | |
921 | Only relevant when a prompt is specified. If set, the prompt will |
|
916 | Only relevant when a prompt is specified. If set, the prompt will | |
922 | be inserted as formatted HTML. Otherwise, the prompt will be treated |
|
917 | be inserted as formatted HTML. Otherwise, the prompt will be treated | |
923 | as plain text, though ANSI color codes will be handled. |
|
918 | as plain text, though ANSI color codes will be handled. | |
924 |
|
919 | |||
925 | newline : bool, optional (default True) |
|
920 | newline : bool, optional (default True) | |
926 | If set, a new line will be written before showing the prompt if |
|
921 | If set, a new line will be written before showing the prompt if | |
927 | there is not already a newline at the end of the buffer. |
|
922 | there is not already a newline at the end of the buffer. | |
928 | """ |
|
923 | """ | |
929 | # Insert a preliminary newline, if necessary. |
|
924 | # Insert a preliminary newline, if necessary. | |
930 | if newline: |
|
925 | if newline: | |
931 | cursor = self._get_end_cursor() |
|
926 | cursor = self._get_end_cursor() | |
932 | if cursor.position() > 0: |
|
927 | if cursor.position() > 0: | |
933 | cursor.movePosition(QtGui.QTextCursor.Left, |
|
928 | cursor.movePosition(QtGui.QTextCursor.Left, | |
934 | QtGui.QTextCursor.KeepAnchor) |
|
929 | QtGui.QTextCursor.KeepAnchor) | |
935 | if str(cursor.selection().toPlainText()) != '\n': |
|
930 | if str(cursor.selection().toPlainText()) != '\n': | |
936 | self._append_plain_text('\n') |
|
931 | self._append_plain_text('\n') | |
937 |
|
932 | |||
938 | # Write the prompt. |
|
933 | # Write the prompt. | |
939 | if prompt is None: |
|
934 | if prompt is None: | |
940 | if self._prompt_html is None: |
|
935 | if self._prompt_html is None: | |
941 | self._append_plain_text(self._prompt) |
|
936 | self._append_plain_text(self._prompt) | |
942 | else: |
|
937 | else: | |
943 | self._append_html(self._prompt_html) |
|
938 | self._append_html(self._prompt_html) | |
944 | else: |
|
939 | else: | |
945 | if html: |
|
940 | if html: | |
946 | self._prompt = self._append_html_fetching_plain_text(prompt) |
|
941 | self._prompt = self._append_html_fetching_plain_text(prompt) | |
947 | self._prompt_html = prompt |
|
942 | self._prompt_html = prompt | |
948 | else: |
|
943 | else: | |
949 | self._append_plain_text(prompt) |
|
944 | self._append_plain_text(prompt) | |
950 | self._prompt = prompt |
|
945 | self._prompt = prompt | |
951 | self._prompt_html = None |
|
946 | self._prompt_html = None | |
952 |
|
947 | |||
953 | self._prompt_pos = self._get_end_cursor().position() |
|
948 | self._prompt_pos = self._get_end_cursor().position() | |
954 | self._prompt_started() |
|
949 | self._prompt_started() | |
955 |
|
950 | |||
956 | def _show_continuation_prompt(self): |
|
951 | def _show_continuation_prompt(self): | |
957 | """ Writes a new continuation prompt at the end of the buffer. |
|
952 | """ Writes a new continuation prompt at the end of the buffer. | |
958 | """ |
|
953 | """ | |
959 | if self._continuation_prompt_html is None: |
|
954 | if self._continuation_prompt_html is None: | |
960 | self._append_plain_text(self._continuation_prompt) |
|
955 | self._append_plain_text(self._continuation_prompt) | |
961 | else: |
|
956 | else: | |
962 | self._continuation_prompt = self._append_html_fetching_plain_text( |
|
957 | self._continuation_prompt = self._append_html_fetching_plain_text( | |
963 | self._continuation_prompt_html) |
|
958 | self._continuation_prompt_html) | |
964 |
|
959 | |||
965 | self._prompt_started() |
|
960 | self._prompt_started() | |
966 |
|
961 | |||
967 |
|
962 | |||
968 | class HistoryConsoleWidget(ConsoleWidget): |
|
963 | class HistoryConsoleWidget(ConsoleWidget): | |
969 | """ A ConsoleWidget that keeps a history of the commands that have been |
|
964 | """ A ConsoleWidget that keeps a history of the commands that have been | |
970 | executed. |
|
965 | executed. | |
971 | """ |
|
966 | """ | |
972 |
|
967 | |||
973 | #--------------------------------------------------------------------------- |
|
968 | #--------------------------------------------------------------------------- | |
974 | # 'object' interface |
|
969 | # 'object' interface | |
975 | #--------------------------------------------------------------------------- |
|
970 | #--------------------------------------------------------------------------- | |
976 |
|
971 | |||
977 | def __init__(self, *args, **kw): |
|
972 | def __init__(self, *args, **kw): | |
978 | super(HistoryConsoleWidget, self).__init__(*args, **kw) |
|
973 | super(HistoryConsoleWidget, self).__init__(*args, **kw) | |
979 | self._history = [] |
|
974 | self._history = [] | |
980 | self._history_index = 0 |
|
975 | self._history_index = 0 | |
981 |
|
976 | |||
982 | #--------------------------------------------------------------------------- |
|
977 | #--------------------------------------------------------------------------- | |
983 | # 'ConsoleWidget' public interface |
|
978 | # 'ConsoleWidget' public interface | |
984 | #--------------------------------------------------------------------------- |
|
979 | #--------------------------------------------------------------------------- | |
985 |
|
980 | |||
986 | def execute(self, source=None, hidden=False, interactive=False): |
|
981 | def execute(self, source=None, hidden=False, interactive=False): | |
987 | """ Reimplemented to the store history. |
|
982 | """ Reimplemented to the store history. | |
988 | """ |
|
983 | """ | |
989 | if not hidden: |
|
984 | if not hidden: | |
990 | history = self.input_buffer if source is None else source |
|
985 | history = self.input_buffer if source is None else source | |
991 |
|
986 | |||
992 | executed = super(HistoryConsoleWidget, self).execute( |
|
987 | executed = super(HistoryConsoleWidget, self).execute( | |
993 | source, hidden, interactive) |
|
988 | source, hidden, interactive) | |
994 |
|
989 | |||
995 | if executed and not hidden: |
|
990 | if executed and not hidden: | |
996 | self._history.append(history.rstrip()) |
|
991 | self._history.append(history.rstrip()) | |
997 | self._history_index = len(self._history) |
|
992 | self._history_index = len(self._history) | |
998 |
|
993 | |||
999 | return executed |
|
994 | return executed | |
1000 |
|
995 | |||
1001 | #--------------------------------------------------------------------------- |
|
996 | #--------------------------------------------------------------------------- | |
1002 | # 'ConsoleWidget' abstract interface |
|
997 | # 'ConsoleWidget' abstract interface | |
1003 | #--------------------------------------------------------------------------- |
|
998 | #--------------------------------------------------------------------------- | |
1004 |
|
999 | |||
1005 | def _up_pressed(self): |
|
1000 | def _up_pressed(self): | |
1006 | """ Called when the up key is pressed. Returns whether to continue |
|
1001 | """ Called when the up key is pressed. Returns whether to continue | |
1007 | processing the event. |
|
1002 | processing the event. | |
1008 | """ |
|
1003 | """ | |
1009 | prompt_cursor = self._get_prompt_cursor() |
|
1004 | prompt_cursor = self._get_prompt_cursor() | |
1010 | if self._get_cursor().blockNumber() == prompt_cursor.blockNumber(): |
|
1005 | if self._get_cursor().blockNumber() == prompt_cursor.blockNumber(): | |
1011 | self.history_previous() |
|
1006 | self.history_previous() | |
1012 |
|
1007 | |||
1013 | # Go to the first line of prompt for seemless history scrolling. |
|
1008 | # Go to the first line of prompt for seemless history scrolling. | |
1014 | cursor = self._get_prompt_cursor() |
|
1009 | cursor = self._get_prompt_cursor() | |
1015 | cursor.movePosition(QtGui.QTextCursor.EndOfLine) |
|
1010 | cursor.movePosition(QtGui.QTextCursor.EndOfLine) | |
1016 | self._set_cursor(cursor) |
|
1011 | self._set_cursor(cursor) | |
1017 |
|
1012 | |||
1018 | return False |
|
1013 | return False | |
1019 | return True |
|
1014 | return True | |
1020 |
|
1015 | |||
1021 | def _down_pressed(self): |
|
1016 | def _down_pressed(self): | |
1022 | """ Called when the down key is pressed. Returns whether to continue |
|
1017 | """ Called when the down key is pressed. Returns whether to continue | |
1023 | processing the event. |
|
1018 | processing the event. | |
1024 | """ |
|
1019 | """ | |
1025 | end_cursor = self._get_end_cursor() |
|
1020 | end_cursor = self._get_end_cursor() | |
1026 | if self._get_cursor().blockNumber() == end_cursor.blockNumber(): |
|
1021 | if self._get_cursor().blockNumber() == end_cursor.blockNumber(): | |
1027 | self.history_next() |
|
1022 | self.history_next() | |
1028 | return False |
|
1023 | return False | |
1029 | return True |
|
1024 | return True | |
1030 |
|
1025 | |||
1031 | #--------------------------------------------------------------------------- |
|
1026 | #--------------------------------------------------------------------------- | |
1032 | # 'HistoryConsoleWidget' interface |
|
1027 | # 'HistoryConsoleWidget' interface | |
1033 | #--------------------------------------------------------------------------- |
|
1028 | #--------------------------------------------------------------------------- | |
1034 |
|
1029 | |||
1035 | def history_previous(self): |
|
1030 | def history_previous(self): | |
1036 | """ If possible, set the input buffer to the previous item in the |
|
1031 | """ If possible, set the input buffer to the previous item in the | |
1037 | history. |
|
1032 | history. | |
1038 | """ |
|
1033 | """ | |
1039 | if self._history_index > 0: |
|
1034 | if self._history_index > 0: | |
1040 | self._history_index -= 1 |
|
1035 | self._history_index -= 1 | |
1041 | self.input_buffer = self._history[self._history_index] |
|
1036 | self.input_buffer = self._history[self._history_index] | |
1042 |
|
1037 | |||
1043 | def history_next(self): |
|
1038 | def history_next(self): | |
1044 | """ Set the input buffer to the next item in the history, or a blank |
|
1039 | """ Set the input buffer to the next item in the history, or a blank | |
1045 | line if there is no subsequent item. |
|
1040 | line if there is no subsequent item. | |
1046 | """ |
|
1041 | """ | |
1047 | if self._history_index < len(self._history): |
|
1042 | if self._history_index < len(self._history): | |
1048 | self._history_index += 1 |
|
1043 | self._history_index += 1 | |
1049 | if self._history_index < len(self._history): |
|
1044 | if self._history_index < len(self._history): | |
1050 | self.input_buffer = self._history[self._history_index] |
|
1045 | self.input_buffer = self._history[self._history_index] | |
1051 | else: |
|
1046 | else: | |
1052 | self.input_buffer = '' |
|
1047 | self.input_buffer = '' |
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