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1 /* | |
2 * Copyright (C) 2006, 2007 Apple, Inc. All rights reserved. | |
3 * Copyright (C) 2009 Google, Inc. All rights reserved. | |
4 * | |
5 * Redistribution and use in source and binary forms, with or without | |
6 * modification, are permitted provided that the following conditions | |
7 * are met: | |
8 * 1. Redistributions of source code must retain the above copyright | |
9 * notice, this list of conditions and the following disclaimer. | |
10 * 2. Redistributions in binary form must reproduce the above copyright | |
11 * notice, this list of conditions and the following disclaimer in the | |
12 * documentation and/or other materials provided with the distribution. | |
13 * | |
14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY | |
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR | |
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
25 */ | |
26 | |
27 #include "config.h" | |
28 #include "EditorClientImpl.h" | |
29 | |
30 #include "Document.h" | |
31 #include "EditCommand.h" | |
32 #include "Editor.h" | |
33 #include "EventHandler.h" | |
34 #include "EventNames.h" | |
35 #include "Frame.h" | |
36 #include "HTMLInputElement.h" | |
37 #include "HTMLNames.h" | |
38 #include "KeyboardCodes.h" | |
39 #include "KeyboardEvent.h" | |
40 #include "PlatformKeyboardEvent.h" | |
41 #include "PlatformString.h" | |
42 #include "RenderObject.h" | |
43 | |
44 #include "DOMUtilitiesPrivate.h" | |
45 #include "WebEditingAction.h" | |
46 #include "WebFrameImpl.h" | |
47 #include "WebKit.h" | |
48 #include "WebNode.h" | |
49 #include "WebPasswordAutocompleteListener.h" | |
50 #include "WebRange.h" | |
51 #include "WebTextAffinity.h" | |
52 #include "WebViewClient.h" | |
53 #include "WebViewImpl.h" | |
54 | |
55 using namespace WebCore; | |
56 | |
57 namespace WebKit { | |
58 | |
59 // Arbitrary depth limit for the undo stack, to keep it from using | |
60 // unbounded memory. This is the maximum number of distinct undoable | |
61 // actions -- unbroken stretches of typed characters are coalesced | |
62 // into a single action. | |
63 static const size_t maximumUndoStackDepth = 1000; | |
64 | |
65 // The size above which we stop triggering autofill for an input text field | |
66 // (so to avoid sending long strings through IPC). | |
67 static const size_t maximumTextSizeForAutofill = 1000; | |
68 | |
69 EditorClientImpl::EditorClientImpl(WebViewImpl* webview) | |
70 : m_webView(webview) | |
71 , m_inRedo(false) | |
72 , m_backspaceOrDeletePressed(false) | |
73 , m_spellCheckThisFieldStatus(SpellCheckAutomatic) | |
74 , m_autofillTimer(this, &EditorClientImpl::doAutofill) | |
75 { | |
76 } | |
77 | |
78 EditorClientImpl::~EditorClientImpl() | |
79 { | |
80 } | |
81 | |
82 void EditorClientImpl::pageDestroyed() | |
83 { | |
84 // Our lifetime is bound to the WebViewImpl. | |
85 } | |
86 | |
87 bool EditorClientImpl::shouldShowDeleteInterface(HTMLElement* elem) | |
88 { | |
89 // Normally, we don't care to show WebCore's deletion UI, so we only enable | |
90 // it if in testing mode and the test specifically requests it by using this | |
91 // magic class name. | |
92 return WebKit::layoutTestMode() | |
93 && elem->getAttribute(HTMLNames::classAttr) == "needsDeletionUI"; | |
94 } | |
95 | |
96 bool EditorClientImpl::smartInsertDeleteEnabled() | |
97 { | |
98 if (m_webView->client()) | |
99 return m_webView->client()->isSmartInsertDeleteEnabled(); | |
100 return true; | |
101 } | |
102 | |
103 bool EditorClientImpl::isSelectTrailingWhitespaceEnabled() | |
104 { | |
105 if (m_webView->client()) | |
106 return m_webView->client()->isSelectTrailingWhitespaceEnabled(); | |
107 #if PLATFORM(WIN_OS) | |
108 return true; | |
109 #else | |
110 return false; | |
111 #endif | |
112 } | |
113 | |
114 bool EditorClientImpl::shouldSpellcheckByDefault() | |
115 { | |
116 // Spellcheck should be enabled for all editable areas (such as textareas, | |
117 // contentEditable regions, and designMode docs), except text inputs. | |
118 const Frame* frame = m_webView->focusedWebCoreFrame(); | |
119 if (!frame) | |
120 return false; | |
121 const Editor* editor = frame->editor(); | |
122 if (!editor) | |
123 return false; | |
124 if (editor->spellCheckingEnabledInFocusedNode()) | |
125 return true; | |
126 const Document* document = frame->document(); | |
127 if (!document) | |
128 return false; | |
129 const Node* node = document->focusedNode(); | |
130 // If |node| is null, we default to allowing spellchecking. This is done in | |
131 // order to mitigate the issue when the user clicks outside the textbox, as a | |
132 // result of which |node| becomes null, resulting in all the spell check | |
133 // markers being deleted. Also, the Frame will decide not to do spellchecking | |
134 // if the user can't edit - so returning true here will not cause any problems | |
135 // to the Frame's behavior. | |
136 if (!node) | |
137 return true; | |
138 const RenderObject* renderer = node->renderer(); | |
139 if (!renderer) | |
140 return false; | |
141 | |
142 return !renderer->isTextField(); | |
143 } | |
144 | |
145 bool EditorClientImpl::isContinuousSpellCheckingEnabled() | |
146 { | |
147 if (m_spellCheckThisFieldStatus == SpellCheckForcedOff) | |
148 return false; | |
149 if (m_spellCheckThisFieldStatus == SpellCheckForcedOn) | |
150 return true; | |
151 return shouldSpellcheckByDefault(); | |
152 } | |
153 | |
154 void EditorClientImpl::toggleContinuousSpellChecking() | |
155 { | |
156 if (isContinuousSpellCheckingEnabled()) | |
157 m_spellCheckThisFieldStatus = SpellCheckForcedOff; | |
158 else | |
159 m_spellCheckThisFieldStatus = SpellCheckForcedOn; | |
160 } | |
161 | |
162 bool EditorClientImpl::isGrammarCheckingEnabled() | |
163 { | |
164 return false; | |
165 } | |
166 | |
167 void EditorClientImpl::toggleGrammarChecking() | |
168 { | |
169 notImplemented(); | |
170 } | |
171 | |
172 int EditorClientImpl::spellCheckerDocumentTag() | |
173 { | |
174 ASSERT_NOT_REACHED(); | |
175 return 0; | |
176 } | |
177 | |
178 bool EditorClientImpl::isEditable() | |
179 { | |
180 return false; | |
181 } | |
182 | |
183 bool EditorClientImpl::shouldBeginEditing(Range* range) | |
184 { | |
185 if (m_webView->client()) | |
186 return m_webView->client()->shouldBeginEditing(WebRange(range)); | |
187 return true; | |
188 } | |
189 | |
190 bool EditorClientImpl::shouldEndEditing(Range* range) | |
191 { | |
192 if (m_webView->client()) | |
193 return m_webView->client()->shouldEndEditing(WebRange(range)); | |
194 return true; | |
195 } | |
196 | |
197 bool EditorClientImpl::shouldInsertNode(Node* node, | |
198 Range* range, | |
199 EditorInsertAction action) | |
200 { | |
201 if (m_webView->client()) { | |
202 return m_webView->client()->shouldInsertNode(WebNode(node), | |
203 WebRange(range), | |
204 static_cast<WebEditingAction>(action)); | |
205 } | |
206 return true; | |
207 } | |
208 | |
209 bool EditorClientImpl::shouldInsertText(const String& text, | |
210 Range* range, | |
211 EditorInsertAction action) | |
212 { | |
213 if (m_webView->client()) { | |
214 return m_webView->client()->shouldInsertText(WebString(text), | |
215 WebRange(range), | |
216 static_cast<WebEditingAction>(action)); | |
217 } | |
218 return true; | |
219 } | |
220 | |
221 | |
222 bool EditorClientImpl::shouldDeleteRange(Range* range) | |
223 { | |
224 if (m_webView->client()) | |
225 return m_webView->client()->shouldDeleteRange(WebRange(range)); | |
226 return true; | |
227 } | |
228 | |
229 bool EditorClientImpl::shouldChangeSelectedRange(Range* fromRange, | |
230 Range* toRange, | |
231 EAffinity affinity, | |
232 bool stillSelecting) | |
233 { | |
234 if (m_webView->client()) { | |
235 return m_webView->client()->shouldChangeSelectedRange(WebRange(fromRange), | |
236 WebRange(toRange), | |
237 static_cast<WebTextAffinity>(affinity), | |
238 stillSelecting); | |
239 } | |
240 return true; | |
241 } | |
242 | |
243 bool EditorClientImpl::shouldApplyStyle(CSSStyleDeclaration* style, | |
244 Range* range) | |
245 { | |
246 if (m_webView->client()) { | |
247 // FIXME: Pass a reference to the CSSStyleDeclaration somehow. | |
248 return m_webView->client()->shouldApplyStyle(WebString(), | |
249 WebRange(range)); | |
250 } | |
251 return true; | |
252 } | |
253 | |
254 bool EditorClientImpl::shouldMoveRangeAfterDelete(Range* range, | |
255 Range* rangeToBeReplaced) | |
256 { | |
257 return true; | |
258 } | |
259 | |
260 void EditorClientImpl::didBeginEditing() | |
261 { | |
262 if (m_webView->client()) | |
263 m_webView->client()->didBeginEditing(); | |
264 } | |
265 | |
266 void EditorClientImpl::respondToChangedSelection() | |
267 { | |
268 if (m_webView->client()) { | |
269 Frame* frame = m_webView->focusedWebCoreFrame(); | |
270 if (frame) | |
271 m_webView->client()->didChangeSelection(!frame->selection()->isRange()); | |
272 } | |
273 } | |
274 | |
275 void EditorClientImpl::respondToChangedContents() | |
276 { | |
277 if (m_webView->client()) | |
278 m_webView->client()->didChangeContents(); | |
279 } | |
280 | |
281 void EditorClientImpl::didEndEditing() | |
282 { | |
283 if (m_webView->client()) | |
284 m_webView->client()->didEndEditing(); | |
285 } | |
286 | |
287 void EditorClientImpl::didWriteSelectionToPasteboard() | |
288 { | |
289 } | |
290 | |
291 void EditorClientImpl::didSetSelectionTypesForPasteboard() | |
292 { | |
293 } | |
294 | |
295 void EditorClientImpl::registerCommandForUndo(PassRefPtr<EditCommand> command) | |
296 { | |
297 if (m_undoStack.size() == maximumUndoStackDepth) | |
298 m_undoStack.removeFirst(); // drop oldest item off the far end | |
299 if (!m_inRedo) | |
300 m_redoStack.clear(); | |
301 m_undoStack.append(command); | |
302 } | |
303 | |
304 void EditorClientImpl::registerCommandForRedo(PassRefPtr<EditCommand> command) | |
305 { | |
306 m_redoStack.append(command); | |
307 } | |
308 | |
309 void EditorClientImpl::clearUndoRedoOperations() | |
310 { | |
311 m_undoStack.clear(); | |
312 m_redoStack.clear(); | |
313 } | |
314 | |
315 bool EditorClientImpl::canUndo() const | |
316 { | |
317 return !m_undoStack.isEmpty(); | |
318 } | |
319 | |
320 bool EditorClientImpl::canRedo() const | |
321 { | |
322 return !m_redoStack.isEmpty(); | |
323 } | |
324 | |
325 void EditorClientImpl::undo() | |
326 { | |
327 if (canUndo()) { | |
328 EditCommandStack::iterator back = --m_undoStack.end(); | |
329 RefPtr<EditCommand> command(*back); | |
330 m_undoStack.remove(back); | |
331 command->unapply(); | |
332 // unapply will call us back to push this command onto the redo stack. | |
333 } | |
334 } | |
335 | |
336 void EditorClientImpl::redo() | |
337 { | |
338 if (canRedo()) { | |
339 EditCommandStack::iterator back = --m_redoStack.end(); | |
340 RefPtr<EditCommand> command(*back); | |
341 m_redoStack.remove(back); | |
342 | |
343 ASSERT(!m_inRedo); | |
344 m_inRedo = true; | |
345 command->reapply(); | |
346 // reapply will call us back to push this command onto the undo stack. | |
347 m_inRedo = false; | |
348 } | |
349 } | |
350 | |
351 // | |
352 // The below code was adapted from the WebKit file webview.cpp | |
353 // | |
354 | |
355 static const unsigned CtrlKey = 1 << 0; | |
356 static const unsigned AltKey = 1 << 1; | |
357 static const unsigned ShiftKey = 1 << 2; | |
358 static const unsigned MetaKey = 1 << 3; | |
359 #if PLATFORM(DARWIN) | |
360 // Aliases for the generic key defintions to make kbd shortcuts definitions more | |
361 // readable on OS X. | |
362 static const unsigned OptionKey = AltKey; | |
363 | |
364 // Do not use this constant for anything but cursor movement commands. Keys | |
365 // with cmd set have their |isSystemKey| bit set, so chances are the shortcut | |
366 // will not be executed. Another, less important, reason is that shortcuts | |
367 // defined in the renderer do not blink the menu item that they triggered. See | |
368 // http://crbug.com/25856 and the bugs linked from there for details. | |
369 static const unsigned CommandKey = MetaKey; | |
370 #endif | |
371 | |
372 // Keys with special meaning. These will be delegated to the editor using | |
373 // the execCommand() method | |
374 struct KeyDownEntry { | |
375 unsigned virtualKey; | |
376 unsigned modifiers; | |
377 const char* name; | |
378 }; | |
379 | |
380 struct KeyPressEntry { | |
381 unsigned charCode; | |
382 unsigned modifiers; | |
383 const char* name; | |
384 }; | |
385 | |
386 static const KeyDownEntry keyDownEntries[] = { | |
387 { VKEY_LEFT, 0, "MoveLeft" }, | |
388 { VKEY_LEFT, ShiftKey, "MoveLeftAndModifySelection" }, | |
389 #if PLATFORM(DARWIN) | |
390 { VKEY_LEFT, OptionKey, "MoveWordLeft" }, | |
391 { VKEY_LEFT, OptionKey | ShiftKey, | |
392 "MoveWordLeftAndModifySelection" }, | |
393 #else | |
394 { VKEY_LEFT, CtrlKey, "MoveWordLeft" }, | |
395 { VKEY_LEFT, CtrlKey | ShiftKey, | |
396 "MoveWordLeftAndModifySelection" }, | |
397 #endif | |
398 { VKEY_RIGHT, 0, "MoveRight" }, | |
399 { VKEY_RIGHT, ShiftKey, "MoveRightAndModifySelection" }, | |
400 #if PLATFORM(DARWIN) | |
401 { VKEY_RIGHT, OptionKey, "MoveWordRight" }, | |
402 { VKEY_RIGHT, OptionKey | ShiftKey, | |
403 "MoveWordRightAndModifySelection" }, | |
404 #else | |
405 { VKEY_RIGHT, CtrlKey, "MoveWordRight" }, | |
406 { VKEY_RIGHT, CtrlKey | ShiftKey, | |
407 "MoveWordRightAndModifySelection" }, | |
408 #endif | |
409 { VKEY_UP, 0, "MoveUp" }, | |
410 { VKEY_UP, ShiftKey, "MoveUpAndModifySelection" }, | |
411 { VKEY_PRIOR, ShiftKey, "MovePageUpAndModifySelection" }, | |
412 { VKEY_DOWN, 0, "MoveDown" }, | |
413 { VKEY_DOWN, ShiftKey, "MoveDownAndModifySelection" }, | |
414 { VKEY_NEXT, ShiftKey, "MovePageDownAndModifySelection" }, | |
415 { VKEY_PRIOR, 0, "MovePageUp" }, | |
416 { VKEY_NEXT, 0, "MovePageDown" }, | |
417 { VKEY_HOME, 0, "MoveToBeginningOfLine" }, | |
418 { VKEY_HOME, ShiftKey, | |
419 "MoveToBeginningOfLineAndModifySelection" }, | |
420 #if PLATFORM(DARWIN) | |
421 { VKEY_LEFT, CommandKey, "MoveToBeginningOfLine" }, | |
422 { VKEY_LEFT, CommandKey | ShiftKey, | |
423 "MoveToBeginningOfLineAndModifySelection" }, | |
424 #endif | |
425 #if PLATFORM(DARWIN) | |
426 { VKEY_UP, CommandKey, "MoveToBeginningOfDocument" }, | |
427 { VKEY_UP, CommandKey | ShiftKey, | |
428 "MoveToBeginningOfDocumentAndModifySelection" }, | |
429 #else | |
430 { VKEY_HOME, CtrlKey, "MoveToBeginningOfDocument" }, | |
431 { VKEY_HOME, CtrlKey | ShiftKey, | |
432 "MoveToBeginningOfDocumentAndModifySelection" }, | |
433 #endif | |
434 { VKEY_END, 0, "MoveToEndOfLine" }, | |
435 { VKEY_END, ShiftKey, "MoveToEndOfLineAndModifySelection" }, | |
436 #if PLATFORM(DARWIN) | |
437 { VKEY_DOWN, CommandKey, "MoveToEndOfDocument" }, | |
438 { VKEY_DOWN, CommandKey | ShiftKey, | |
439 "MoveToEndOfDocumentAndModifySelection" }, | |
440 #else | |
441 { VKEY_END, CtrlKey, "MoveToEndOfDocument" }, | |
442 { VKEY_END, CtrlKey | ShiftKey, | |
443 "MoveToEndOfDocumentAndModifySelection" }, | |
444 #endif | |
445 #if PLATFORM(DARWIN) | |
446 { VKEY_RIGHT, CommandKey, "MoveToEndOfLine" }, | |
447 { VKEY_RIGHT, CommandKey | ShiftKey, | |
448 "MoveToEndOfLineAndModifySelection" }, | |
449 #endif | |
450 { VKEY_BACK, 0, "DeleteBackward" }, | |
451 { VKEY_BACK, ShiftKey, "DeleteBackward" }, | |
452 { VKEY_DELETE, 0, "DeleteForward" }, | |
453 #if PLATFORM(DARWIN) | |
454 { VKEY_BACK, OptionKey, "DeleteWordBackward" }, | |
455 { VKEY_DELETE, OptionKey, "DeleteWordForward" }, | |
456 #else | |
457 { VKEY_BACK, CtrlKey, "DeleteWordBackward" }, | |
458 { VKEY_DELETE, CtrlKey, "DeleteWordForward" }, | |
459 #endif | |
460 { 'B', CtrlKey, "ToggleBold" }, | |
461 { 'I', CtrlKey, "ToggleItalic" }, | |
462 { 'U', CtrlKey, "ToggleUnderline" }, | |
463 { VKEY_ESCAPE, 0, "Cancel" }, | |
464 { VKEY_OEM_PERIOD, CtrlKey, "Cancel" }, | |
465 { VKEY_TAB, 0, "InsertTab" }, | |
466 { VKEY_TAB, ShiftKey, "InsertBacktab" }, | |
467 { VKEY_RETURN, 0, "InsertNewline" }, | |
468 { VKEY_RETURN, CtrlKey, "InsertNewline" }, | |
469 { VKEY_RETURN, AltKey, "InsertNewline" }, | |
470 { VKEY_RETURN, AltKey | ShiftKey, "InsertNewline" }, | |
471 { VKEY_RETURN, ShiftKey, "InsertLineBreak" }, | |
472 { VKEY_INSERT, CtrlKey, "Copy" }, | |
473 { VKEY_INSERT, ShiftKey, "Paste" }, | |
474 { VKEY_DELETE, ShiftKey, "Cut" }, | |
475 #if !PLATFORM(DARWIN) | |
476 // On OS X, we pipe these back to the browser, so that it can do menu item | |
477 // blinking. | |
478 { 'C', CtrlKey, "Copy" }, | |
479 { 'V', CtrlKey, "Paste" }, | |
480 { 'V', CtrlKey | ShiftKey, "PasteAndMatchStyle" }, | |
481 { 'X', CtrlKey, "Cut" }, | |
482 { 'A', CtrlKey, "SelectAll" }, | |
483 { 'Z', CtrlKey, "Undo" }, | |
484 { 'Z', CtrlKey | ShiftKey, "Redo" }, | |
485 { 'Y', CtrlKey, "Redo" }, | |
486 #endif | |
487 }; | |
488 | |
489 static const KeyPressEntry keyPressEntries[] = { | |
490 { '\t', 0, "InsertTab" }, | |
491 { '\t', ShiftKey, "InsertBacktab" }, | |
492 { '\r', 0, "InsertNewline" }, | |
493 { '\r', CtrlKey, "InsertNewline" }, | |
494 { '\r', ShiftKey, "InsertLineBreak" }, | |
495 { '\r', AltKey, "InsertNewline" }, | |
496 { '\r', AltKey | ShiftKey, "InsertNewline" }, | |
497 }; | |
498 | |
499 const char* EditorClientImpl::interpretKeyEvent(const KeyboardEvent* evt) | |
500 { | |
501 const PlatformKeyboardEvent* keyEvent = evt->keyEvent(); | |
502 if (!keyEvent) | |
503 return ""; | |
504 | |
505 static HashMap<int, const char*>* keyDownCommandsMap = 0; | |
506 static HashMap<int, const char*>* keyPressCommandsMap = 0; | |
507 | |
508 if (!keyDownCommandsMap) { | |
509 keyDownCommandsMap = new HashMap<int, const char*>; | |
510 keyPressCommandsMap = new HashMap<int, const char*>; | |
511 | |
512 for (unsigned i = 0; i < arraysize(keyDownEntries); i++) { | |
513 keyDownCommandsMap->set(keyDownEntries[i].modifiers << 16 | keyDownEntries[i].virtualKey, | |
514 keyDownEntries[i].name); | |
515 } | |
516 | |
517 for (unsigned i = 0; i < arraysize(keyPressEntries); i++) { | |
518 keyPressCommandsMap->set(keyPressEntries[i].modifiers << 16 | keyPressEntries[i].charCode, | |
519 keyPressEntries[i].name); | |
520 } | |
521 } | |
522 | |
523 unsigned modifiers = 0; | |
524 if (keyEvent->shiftKey()) | |
525 modifiers |= ShiftKey; | |
526 if (keyEvent->altKey()) | |
527 modifiers |= AltKey; | |
528 if (keyEvent->ctrlKey()) | |
529 modifiers |= CtrlKey; | |
530 if (keyEvent->metaKey()) | |
531 modifiers |= MetaKey; | |
532 | |
533 if (keyEvent->type() == PlatformKeyboardEvent::RawKeyDown) { | |
534 int mapKey = modifiers << 16 | evt->keyCode(); | |
535 return mapKey ? keyDownCommandsMap->get(mapKey) : 0; | |
536 } | |
537 | |
538 int mapKey = modifiers << 16 | evt->charCode(); | |
539 return mapKey ? keyPressCommandsMap->get(mapKey) : 0; | |
540 } | |
541 | |
542 bool EditorClientImpl::handleEditingKeyboardEvent(KeyboardEvent* evt) | |
543 { | |
544 const PlatformKeyboardEvent* keyEvent = evt->keyEvent(); | |
545 // do not treat this as text input if it's a system key event | |
546 if (!keyEvent || keyEvent->isSystemKey()) | |
547 return false; | |
548 | |
549 Frame* frame = evt->target()->toNode()->document()->frame(); | |
550 if (!frame) | |
551 return false; | |
552 | |
553 String commandName = interpretKeyEvent(evt); | |
554 Editor::Command command = frame->editor()->command(commandName); | |
555 | |
556 if (keyEvent->type() == PlatformKeyboardEvent::RawKeyDown) { | |
557 // WebKit doesn't have enough information about mode to decide how | |
558 // commands that just insert text if executed via Editor should be treated, | |
559 // so we leave it upon WebCore to either handle them immediately | |
560 // (e.g. Tab that changes focus) or let a keypress event be generated | |
561 // (e.g. Tab that inserts a Tab character, or Enter). | |
562 if (command.isTextInsertion() || commandName.isEmpty()) | |
563 return false; | |
564 if (command.execute(evt)) { | |
565 if (m_webView->client()) | |
566 m_webView->client()->didExecuteCommand(WebString(commandName)); | |
567 return true; | |
568 } | |
569 return false; | |
570 } | |
571 | |
572 if (command.execute(evt)) { | |
573 if (m_webView->client()) | |
574 m_webView->client()->didExecuteCommand(WebString(commandName)); | |
575 return true; | |
576 } | |
577 | |
578 // Here we need to filter key events. | |
579 // On Gtk/Linux, it emits key events with ASCII text and ctrl on for ctrl-<x>. | |
580 // In Webkit, EditorClient::handleKeyboardEvent in | |
581 // WebKit/gtk/WebCoreSupport/EditorClientGtk.cpp drop such events. | |
582 // On Mac, it emits key events with ASCII text and meta on for Command-<x>. | |
583 // These key events should not emit text insert event. | |
584 // Alt key would be used to insert alternative character, so we should let | |
585 // through. Also note that Ctrl-Alt combination equals to AltGr key which is | |
586 // also used to insert alternative character. | |
587 // http://code.google.com/p/chromium/issues/detail?id=10846 | |
588 // Windows sets both alt and meta are on when "Alt" key pressed. | |
589 // http://code.google.com/p/chromium/issues/detail?id=2215 | |
590 // Also, we should not rely on an assumption that keyboards don't | |
591 // send ASCII characters when pressing a control key on Windows, | |
592 // which may be configured to do it so by user. | |
593 // See also http://en.wikipedia.org/wiki/Keyboard_Layout | |
594 // FIXME(ukai): investigate more detail for various keyboard layout. | |
595 if (evt->keyEvent()->text().length() == 1) { | |
596 UChar ch = evt->keyEvent()->text()[0U]; | |
597 | |
598 // Don't insert null or control characters as they can result in | |
599 // unexpected behaviour | |
600 if (ch < ' ') | |
601 return false; | |
602 #if !PLATFORM(WIN_OS) | |
603 // Don't insert ASCII character if ctrl w/o alt or meta is on. | |
604 // On Mac, we should ignore events when meta is on (Command-<x>). | |
605 if (ch < 0x80) { | |
606 if (evt->keyEvent()->ctrlKey() && !evt->keyEvent()->altKey()) | |
607 return false; | |
608 #if PLATFORM(DARWIN) | |
609 if (evt->keyEvent()->metaKey()) | |
610 return false; | |
611 #endif | |
612 } | |
613 #endif | |
614 } | |
615 | |
616 if (!frame->editor()->canEdit()) | |
617 return false; | |
618 | |
619 return frame->editor()->insertText(evt->keyEvent()->text(), evt); | |
620 } | |
621 | |
622 void EditorClientImpl::handleKeyboardEvent(KeyboardEvent* evt) | |
623 { | |
624 if (evt->keyCode() == VKEY_DOWN | |
625 || evt->keyCode() == VKEY_UP) { | |
626 ASSERT(evt->target()->toNode()); | |
627 showFormAutofillForNode(evt->target()->toNode()); | |
628 } | |
629 | |
630 // Give the embedder a chance to handle the keyboard event. | |
631 if ((m_webView->client() | |
632 && m_webView->client()->handleCurrentKeyboardEvent()) | |
633 || handleEditingKeyboardEvent(evt)) | |
634 evt->setDefaultHandled(); | |
635 } | |
636 | |
637 void EditorClientImpl::handleInputMethodKeydown(KeyboardEvent* keyEvent) | |
638 { | |
639 // We handle IME within chrome. | |
640 } | |
641 | |
642 void EditorClientImpl::textFieldDidBeginEditing(Element*) | |
643 { | |
644 } | |
645 | |
646 void EditorClientImpl::textFieldDidEndEditing(Element* element) | |
647 { | |
648 // Notification that focus was lost. Be careful with this, it's also sent | |
649 // when the page is being closed. | |
650 | |
651 // Cancel any pending DoAutofill call. | |
652 m_autofillArgs.clear(); | |
653 m_autofillTimer.stop(); | |
654 | |
655 // Hide any showing popup. | |
656 m_webView->hideAutoCompletePopup(); | |
657 | |
658 if (!m_webView->client()) | |
659 return; // The page is getting closed, don't fill the password. | |
660 | |
661 // Notify any password-listener of the focus change. | |
662 HTMLInputElement* inputElement = WebKit::toHTMLInputElement(element); | |
663 if (!inputElement) | |
664 return; | |
665 | |
666 WebFrameImpl* webframe = WebFrameImpl::fromFrame(inputElement->document()->frame()); | |
667 if (!webframe) | |
668 return; | |
669 | |
670 WebPasswordAutocompleteListener* listener = webframe->getPasswordListener(inputElement); | |
671 if (!listener) | |
672 return; | |
673 | |
674 listener->didBlurInputElement(inputElement->value()); | |
675 } | |
676 | |
677 void EditorClientImpl::textDidChangeInTextField(Element* element) | |
678 { | |
679 ASSERT(element->hasLocalName(HTMLNames::inputTag)); | |
680 // Note that we only show the autofill popup in this case if the caret is at | |
681 // the end. This matches FireFox and Safari but not IE. | |
682 autofill(static_cast<HTMLInputElement*>(element), false, false, | |
683 true); | |
684 } | |
685 | |
686 bool EditorClientImpl::showFormAutofillForNode(Node* node) | |
687 { | |
688 HTMLInputElement* inputElement = WebKit::toHTMLInputElement(node); | |
689 if (inputElement) | |
690 return autofill(inputElement, true, true, false); | |
691 return false; | |
692 } | |
693 | |
694 bool EditorClientImpl::autofill(HTMLInputElement* inputElement, | |
695 bool autofillFormOnly, | |
696 bool autofillOnEmptyValue, | |
697 bool requireCaretAtEnd) | |
698 { | |
699 // Cancel any pending DoAutofill call. | |
700 m_autofillArgs.clear(); | |
701 m_autofillTimer.stop(); | |
702 | |
703 // Let's try to trigger autofill for that field, if applicable. | |
704 if (!inputElement->isEnabledFormControl() || !inputElement->isTextField() | |
705 || inputElement->isPasswordField() | |
706 || !inputElement->autoComplete()) | |
707 return false; | |
708 | |
709 WebString name = WebKit::nameOfInputElement(inputElement); | |
710 if (name.isEmpty()) // If the field has no name, then we won't have values. | |
711 return false; | |
712 | |
713 // Don't attempt to autofill with values that are too large. | |
714 if (inputElement->value().length() > maximumTextSizeForAutofill) | |
715 return false; | |
716 | |
717 m_autofillArgs = new AutofillArgs(); | |
718 m_autofillArgs->inputElement = inputElement; | |
719 m_autofillArgs->autofillFormOnly = autofillFormOnly; | |
720 m_autofillArgs->autofillOnEmptyValue = autofillOnEmptyValue; | |
721 m_autofillArgs->requireCaretAtEnd = requireCaretAtEnd; | |
722 m_autofillArgs->backspaceOrDeletePressed = m_backspaceOrDeletePressed; | |
723 | |
724 if (!requireCaretAtEnd) | |
725 doAutofill(0); | |
726 else { | |
727 // We post a task for doing the autofill as the caret position is not set | |
728 // properly at this point (http://bugs.webkit.org/show_bug.cgi?id=16976) | |
729 // and we need it to determine whether or not to trigger autofill. | |
730 m_autofillTimer.startOneShot(0.0); | |
731 } | |
732 return true; | |
733 } | |
734 | |
735 void EditorClientImpl::doAutofill(Timer<EditorClientImpl>* timer) | |
736 { | |
737 OwnPtr<AutofillArgs> args(m_autofillArgs.release()); | |
738 HTMLInputElement* inputElement = args->inputElement.get(); | |
739 | |
740 const String& value = inputElement->value(); | |
741 | |
742 // Enforce autofill_on_empty_value and caret_at_end. | |
743 | |
744 bool isCaretAtEnd = true; | |
745 if (args->requireCaretAtEnd) | |
746 isCaretAtEnd = inputElement->selectionStart() == inputElement->selectionEnd() | |
747 && inputElement->selectionEnd() == static_cast<int>(value.length()); | |
748 | |
749 if ((!args->autofillOnEmptyValue && value.isEmpty()) || !isCaretAtEnd) { | |
750 m_webView->hideAutoCompletePopup(); | |
751 return; | |
752 } | |
753 | |
754 // First let's see if there is a password listener for that element. | |
755 // We won't trigger form autofill in that case, as having both behavior on | |
756 // a node would be confusing. | |
757 WebFrameImpl* webframe = WebFrameImpl::fromFrame(inputElement->document()->frame()); | |
758 if (!webframe) | |
759 return; | |
760 WebPasswordAutocompleteListener* listener = webframe->getPasswordListener(inputElement); | |
761 if (listener) { | |
762 if (args->autofillFormOnly) | |
763 return; | |
764 | |
765 listener->performInlineAutocomplete(value, | |
766 args->backspaceOrDeletePressed, | |
767 true); | |
768 return; | |
769 } | |
770 | |
771 // Then trigger form autofill. | |
772 WebString name = WebKit::nameOfInputElement(inputElement); | |
773 ASSERT(static_cast<int>(name.length()) > 0); | |
774 | |
775 if (m_webView->client()) | |
776 m_webView->client()->queryAutofillSuggestions(WebNode(inputElement), | |
777 name, WebString(value)); | |
778 } | |
779 | |
780 void EditorClientImpl::cancelPendingAutofill() | |
781 { | |
782 m_autofillArgs.clear(); | |
783 m_autofillTimer.stop(); | |
784 } | |
785 | |
786 void EditorClientImpl::onAutofillSuggestionAccepted(HTMLInputElement* textField) | |
787 { | |
788 WebFrameImpl* webframe = WebFrameImpl::fromFrame(textField->document()->frame()); | |
789 if (!webframe) | |
790 return; | |
791 | |
792 WebPasswordAutocompleteListener* listener = webframe->getPasswordListener(textField); | |
793 // Password listeners need to autocomplete other fields that depend on the | |
794 // input element with autofill suggestions. | |
795 if (listener) | |
796 listener->performInlineAutocomplete(textField->value(), false, false); | |
797 } | |
798 | |
799 bool EditorClientImpl::doTextFieldCommandFromEvent(Element* element, | |
800 KeyboardEvent* event) | |
801 { | |
802 // Remember if backspace was pressed for the autofill. It is not clear how to | |
803 // find if backspace was pressed from textFieldDidBeginEditing and | |
804 // textDidChangeInTextField as when these methods are called the value of the | |
805 // input element already contains the type character. | |
806 m_backspaceOrDeletePressed = event->keyCode() == VKEY_BACK || event->keyCode() == VKEY_DELETE; | |
807 | |
808 // The Mac code appears to use this method as a hook to implement special | |
809 // keyboard commands specific to Safari's auto-fill implementation. We | |
810 // just return false to allow the default action. | |
811 return false; | |
812 } | |
813 | |
814 void EditorClientImpl::textWillBeDeletedInTextField(Element*) | |
815 { | |
816 } | |
817 | |
818 void EditorClientImpl::textDidChangeInTextArea(Element*) | |
819 { | |
820 } | |
821 | |
822 void EditorClientImpl::ignoreWordInSpellDocument(const String&) | |
823 { | |
824 notImplemented(); | |
825 } | |
826 | |
827 void EditorClientImpl::learnWord(const String&) | |
828 { | |
829 notImplemented(); | |
830 } | |
831 | |
832 void EditorClientImpl::checkSpellingOfString(const UChar* text, int length, | |
833 int* misspellingLocation, | |
834 int* misspellingLength) | |
835 { | |
836 // SpellCheckWord will write (0, 0) into the output vars, which is what our | |
837 // caller expects if the word is spelled correctly. | |
838 int spellLocation = -1; | |
839 int spellLength = 0; | |
840 | |
841 // Check to see if the provided text is spelled correctly. | |
842 if (isContinuousSpellCheckingEnabled() && m_webView->client()) | |
843 m_webView->client()->spellCheck(WebString(text, length), spellLocation, spellLength); | |
844 else { | |
845 spellLocation = 0; | |
846 spellLength = 0; | |
847 } | |
848 | |
849 // Note: the Mac code checks if the pointers are null before writing to them, | |
850 // so we do too. | |
851 if (misspellingLocation) | |
852 *misspellingLocation = spellLocation; | |
853 if (misspellingLength) | |
854 *misspellingLength = spellLength; | |
855 } | |
856 | |
857 String EditorClientImpl::getAutoCorrectSuggestionForMisspelledWord(const String& misspelledWord) | |
858 { | |
859 if (!(isContinuousSpellCheckingEnabled() && m_webView->client())) | |
860 return String(); | |
861 | |
862 // Do not autocorrect words with capital letters in it except the | |
863 // first letter. This will remove cases changing "IMB" to "IBM". | |
864 for (size_t i = 1; i < misspelledWord.length(); i++) { | |
865 if (u_isupper(static_cast<UChar32>(misspelledWord[i]))) | |
866 return String(); | |
867 } | |
868 | |
869 return m_webView->client()->autoCorrectWord(WebString(misspelledWord)); | |
870 } | |
871 | |
872 void EditorClientImpl::checkGrammarOfString(const UChar*, int length, | |
873 WTF::Vector<GrammarDetail>&, | |
874 int* badGrammarLocation, | |
875 int* badGrammarLength) | |
876 { | |
877 notImplemented(); | |
878 if (badGrammarLocation) | |
879 *badGrammarLocation = 0; | |
880 if (badGrammarLength) | |
881 *badGrammarLength = 0; | |
882 } | |
883 | |
884 void EditorClientImpl::updateSpellingUIWithGrammarString(const String&, | |
885 const GrammarDetail& detail) | |
886 { | |
887 notImplemented(); | |
888 } | |
889 | |
890 void EditorClientImpl::updateSpellingUIWithMisspelledWord(const String& misspelledWord) | |
891 { | |
892 if (m_webView->client()) | |
893 m_webView->client()->updateSpellingUIWithMisspelledWord(WebString(misspelledWord)); | |
894 } | |
895 | |
896 void EditorClientImpl::showSpellingUI(bool show) | |
897 { | |
898 if (m_webView->client()) | |
899 m_webView->client()->showSpellingUI(show); | |
900 } | |
901 | |
902 bool EditorClientImpl::spellingUIIsShowing() | |
903 { | |
904 if (m_webView->client()) | |
905 return m_webView->client()->isShowingSpellingUI(); | |
906 return false; | |
907 } | |
908 | |
909 void EditorClientImpl::getGuessesForWord(const String&, | |
910 WTF::Vector<String>& guesses) | |
911 { | |
912 notImplemented(); | |
913 } | |
914 | |
915 void EditorClientImpl::setInputMethodState(bool enabled) | |
916 { | |
917 if (m_webView->client()) | |
918 m_webView->client()->setInputMethodEnabled(enabled); | |
919 } | |
920 | |
921 } // namesace WebKit | |
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