6b82463cc6af32c62403dbe54d21c0bff7bcdfdc
[WebKit-https.git] / Source / WebKit2 / WebProcess / WebPage / WebPage.cpp
1 /*
2  * Copyright (C) 2010, 2011 Apple Inc. All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  * 1. Redistributions of source code must retain the above copyright
8  *    notice, this list of conditions and the following disclaimer.
9  * 2. Redistributions in binary form must reproduce the above copyright
10  *    notice, this list of conditions and the following disclaimer in the
11  *    documentation and/or other materials provided with the distribution.
12  *
13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23  * THE POSSIBILITY OF SUCH DAMAGE.
24  */
25
26 #include "config.h"
27 #include "WebPage.h"
28
29 #include "Arguments.h"
30 #include "DataReference.h"
31 #include "DecoderAdapter.h"
32 #include "DrawingArea.h"
33 #include "InjectedBundle.h"
34 #include "InjectedBundleBackForwardList.h"
35 #include "LayerTreeHost.h"
36 #include "MessageID.h"
37 #include "NetscapePlugin.h"
38 #include "NotificationPermissionRequestManager.h"
39 #include "PageOverlay.h"
40 #include "PluginProxy.h"
41 #include "PluginView.h"
42 #include "PrintInfo.h"
43 #include "SessionState.h"
44 #include "ShareableBitmap.h"
45 #include "WebBackForwardList.h"
46 #include "WebBackForwardListItem.h"
47 #include "WebBackForwardListProxy.h"
48 #include "WebChromeClient.h"
49 #include "WebContextMenu.h"
50 #include "WebContextMenuClient.h"
51 #include "WebContextMessages.h"
52 #include "WebCoreArgumentCoders.h"
53 #include "WebDragClient.h"
54 #include "WebEditorClient.h"
55 #include "WebEvent.h"
56 #include "WebEventConversion.h"
57 #include "WebFrame.h"
58 #include "WebFullScreenManager.h"
59 #include "WebGeolocationClient.h"
60 #include "WebGeometry.h"
61 #include "WebImage.h"
62 #include "WebInspector.h"
63 #include "WebInspectorClient.h"
64 #include "WebNotificationClient.h"
65 #include "WebOpenPanelResultListener.h"
66 #include "WebPageCreationParameters.h"
67 #include "WebPageGroupProxy.h"
68 #include "WebPageProxyMessages.h"
69 #include "WebPopupMenu.h"
70 #include "WebPreferencesStore.h"
71 #include "WebProcess.h"
72 #include "WebProcessProxyMessages.h"
73 #include <JavaScriptCore/APICast.h>
74 #include <WebCore/AbstractDatabase.h>
75 #include <WebCore/ArchiveResource.h>
76 #include <WebCore/Chrome.h>
77 #include <WebCore/ContextMenuController.h>
78 #include <WebCore/DocumentFragment.h>
79 #include <WebCore/DocumentLoader.h>
80 #include <WebCore/DocumentMarkerController.h>
81 #include <WebCore/DragController.h>
82 #include <WebCore/DragData.h>
83 #include <WebCore/DragSession.h>
84 #include <WebCore/EventHandler.h>
85 #include <WebCore/FocusController.h>
86 #include <WebCore/FormState.h>
87 #include <WebCore/Frame.h>
88 #include <WebCore/FrameLoadRequest.h>
89 #include <WebCore/FrameLoaderTypes.h>
90 #include <WebCore/FrameView.h>
91 #include <WebCore/HTMLFormElement.h>
92 #include <WebCore/HTMLInputElement.h>
93 #include <WebCore/HistoryItem.h>
94 #include <WebCore/KeyboardEvent.h>
95 #include <WebCore/MouseEvent.h>
96 #include <WebCore/Page.h>
97 #include <WebCore/PlatformKeyboardEvent.h>
98 #include <WebCore/PluginDocument.h>
99 #include <WebCore/PrintContext.h>
100 #include <WebCore/RenderArena.h>
101 #include <WebCore/RenderLayer.h>
102 #include <WebCore/RenderTreeAsText.h>
103 #include <WebCore/RenderView.h>
104 #include <WebCore/ReplaceSelectionCommand.h>
105 #include <WebCore/ResourceRequest.h>
106 #include <WebCore/RunLoop.h>
107 #include <WebCore/SchemeRegistry.h>
108 #include <WebCore/ScriptValue.h>
109 #include <WebCore/SerializedScriptValue.h>
110 #include <WebCore/Settings.h>
111 #include <WebCore/SharedBuffer.h>
112 #include <WebCore/SubstituteData.h>
113 #include <WebCore/TextIterator.h>
114 #include <WebCore/markup.h>
115 #include <runtime/JSLock.h>
116 #include <runtime/JSValue.h>
117
118 #include <WebCore/Range.h>
119 #include <WebCore/VisiblePosition.h>
120
121 #if ENABLE(PLUGIN_PROCESS)
122 #if PLATFORM(MAC)
123 #include "MachPort.h"
124 #endif
125 #endif
126
127 #if PLATFORM(MAC)
128 #include "BuiltInPDFView.h"
129 #endif
130
131 #if PLATFORM(QT)
132 #include "HitTestResult.h"
133 #include <QMimeData>
134 #endif
135
136 #if PLATFORM(GTK)
137 #include <gtk/gtk.h>
138 #include "DataObjectGtk.h"
139 #include "WebPrintOperationGtk.h"
140 #endif
141
142 #ifndef NDEBUG
143 #include <wtf/RefCountedLeakCounter.h>
144 #endif
145
146 using namespace JSC;
147 using namespace WebCore;
148 using namespace std;
149
150 namespace WebKit {
151
152 class SendStopResponsivenessTimer {
153 public:
154     SendStopResponsivenessTimer(WebPage* page)
155         : m_page(page)
156     {
157     }
158     
159     ~SendStopResponsivenessTimer()
160     {
161         m_page->send(Messages::WebPageProxy::StopResponsivenessTimer());
162     }
163
164 private:
165     WebPage* m_page;
166 };
167
168 DEFINE_DEBUG_ONLY_GLOBAL(WTF::RefCountedLeakCounter, webPageCounter, ("WebPage"));
169
170 PassRefPtr<WebPage> WebPage::create(uint64_t pageID, const WebPageCreationParameters& parameters)
171 {
172     RefPtr<WebPage> page = adoptRef(new WebPage(pageID, parameters));
173
174     if (page->pageGroup()->isVisibleToInjectedBundle() && WebProcess::shared().injectedBundle())
175         WebProcess::shared().injectedBundle()->didCreatePage(page.get());
176
177     return page.release();
178 }
179
180 WebPage::WebPage(uint64_t pageID, const WebPageCreationParameters& parameters)
181     : m_viewSize(parameters.viewSize)
182     , m_useFixedLayout(false)
183     , m_drawsBackground(true)
184     , m_drawsTransparentBackground(false)
185     , m_isInRedo(false)
186     , m_isClosed(false)
187     , m_tabToLinks(false)
188 #if PLATFORM(MAC)
189     , m_windowIsVisible(false)
190     , m_isSmartInsertDeleteEnabled(parameters.isSmartInsertDeleteEnabled)
191     , m_keyboardEventBeingInterpreted(0)
192 #elif PLATFORM(WIN)
193     , m_nativeWindow(parameters.nativeWindow)
194 #elif PLATFORM(GTK)
195     , m_accessibilityObject(0)
196 #endif
197     , m_setCanStartMediaTimer(WebProcess::shared().runLoop(), this, &WebPage::setCanStartMediaTimerFired)
198     , m_findController(this)
199 #if ENABLE(TOUCH_EVENTS)
200 #if PLATFORM(QT)
201     , m_tapHighlightController(this)
202 #endif
203 #endif
204 #if ENABLE(GEOLOCATION)
205     , m_geolocationPermissionRequestManager(this)
206 #endif
207     , m_pageID(pageID)
208     , m_canRunBeforeUnloadConfirmPanel(parameters.canRunBeforeUnloadConfirmPanel)
209     , m_canRunModal(parameters.canRunModal)
210     , m_isRunningModal(false)
211     , m_cachedMainFrameIsPinnedToLeftSide(false)
212     , m_cachedMainFrameIsPinnedToRightSide(false)
213     , m_canShortCircuitHorizontalWheelEvents(false)
214     , m_numWheelEventHandlers(0)
215     , m_cachedPageCount(0)
216     , m_isShowingContextMenu(false)
217     , m_willGoToBackForwardItemCallbackEnabled(true)
218 #if PLATFORM(WIN)
219     , m_gestureReachedScrollingLimit(false)
220 #endif
221 {
222     ASSERT(m_pageID);
223     // FIXME: This is a non-ideal location for this Setting and
224     // 4ms should be adopted project-wide now, https://bugs.webkit.org/show_bug.cgi?id=61214
225     Settings::setDefaultMinDOMTimerInterval(0.004);
226
227     Page::PageClients pageClients;
228     pageClients.chromeClient = new WebChromeClient(this);
229     pageClients.contextMenuClient = new WebContextMenuClient(this);
230     pageClients.editorClient = new WebEditorClient(this);
231     pageClients.dragClient = new WebDragClient(this);
232     pageClients.backForwardClient = WebBackForwardListProxy::create(this);
233 #if ENABLE(GEOLOCATION)
234     pageClients.geolocationClient = new WebGeolocationClient(this);
235 #endif
236 #if ENABLE(INSPECTOR)
237     pageClients.inspectorClient = new WebInspectorClient(this);
238 #endif
239     
240     m_page = adoptPtr(new Page(pageClients));
241
242 #if ENABLE(NOTIFICATIONS) || ENABLE(LEGACY_NOTIFICATIONS)
243     WebCore::provideNotification(m_page.get(), new WebNotificationClient(this));
244 #endif
245
246     // Qt does not yet call setIsInWindow. Until it does, just leave
247     // this line out so plug-ins and video will work. Eventually all platforms
248     // should call setIsInWindow and this comment and #if should be removed,
249     // leaving behind the setCanStartMedia call.
250 #if !PLATFORM(QT)
251     m_page->setCanStartMedia(false);
252 #endif
253
254     updatePreferences(parameters.store);
255
256     m_pageGroup = WebProcess::shared().webPageGroup(parameters.pageGroupData);
257     m_page->setGroupName(m_pageGroup->identifier());
258
259     platformInitialize();
260
261     m_drawingArea = DrawingArea::create(this, parameters);
262     m_drawingArea->setPaintingEnabled(false);
263
264     m_mainFrame = WebFrame::createMainFrame(this);
265
266     setUseFixedLayout(parameters.useFixedLayout);
267
268     setDrawsBackground(parameters.drawsBackground);
269     setDrawsTransparentBackground(parameters.drawsTransparentBackground);
270
271     setPaginationMode(parameters.paginationMode);
272     setPaginationBehavesLikeColumns(parameters.paginationBehavesLikeColumns);
273     setPageLength(parameters.pageLength);
274     setGapBetweenPages(parameters.gapBetweenPages);
275
276     setMemoryCacheMessagesEnabled(parameters.areMemoryCacheClientCallsEnabled);
277
278     setActive(parameters.isActive);
279     setFocused(parameters.isFocused);
280     setIsInWindow(parameters.isInWindow);
281
282     m_userAgent = parameters.userAgent;
283
284     WebBackForwardListProxy::setHighestItemIDFromUIProcess(parameters.highestUsedBackForwardItemID);
285     
286     if (!parameters.sessionState.isEmpty())
287         restoreSession(parameters.sessionState);
288
289     m_drawingArea->setPaintingEnabled(true);
290     
291     setMediaVolume(parameters.mediaVolume);
292
293 #ifndef NDEBUG
294     webPageCounter.increment();
295 #endif
296 }
297
298 WebPage::~WebPage()
299 {
300     if (m_backForwardList)
301         m_backForwardList->detach();
302
303     ASSERT(!m_page);
304
305     m_sandboxExtensionTracker.invalidate();
306
307 #if PLATFORM(MAC)
308     ASSERT(m_pluginViews.isEmpty());
309 #endif
310
311 #ifndef NDEBUG
312     webPageCounter.decrement();
313 #endif
314 }
315
316 void WebPage::dummy(bool&)
317 {
318 }
319
320 CoreIPC::Connection* WebPage::connection() const
321 {
322     return WebProcess::shared().connection();
323 }
324
325 void WebPage::initializeInjectedBundleContextMenuClient(WKBundlePageContextMenuClient* client)
326 {
327     m_contextMenuClient.initialize(client);
328 }
329
330 void WebPage::initializeInjectedBundleEditorClient(WKBundlePageEditorClient* client)
331 {
332     m_editorClient.initialize(client);
333 }
334
335 void WebPage::initializeInjectedBundleFormClient(WKBundlePageFormClient* client)
336 {
337     m_formClient.initialize(client);
338 }
339
340 void WebPage::initializeInjectedBundleLoaderClient(WKBundlePageLoaderClient* client)
341 {
342     m_loaderClient.initialize(client);
343 }
344
345 void WebPage::initializeInjectedBundlePolicyClient(WKBundlePagePolicyClient* client)
346 {
347     m_policyClient.initialize(client);
348 }
349
350 void WebPage::initializeInjectedBundleResourceLoadClient(WKBundlePageResourceLoadClient* client)
351 {
352     m_resourceLoadClient.initialize(client);
353 }
354
355 void WebPage::initializeInjectedBundleUIClient(WKBundlePageUIClient* client)
356 {
357     m_uiClient.initialize(client);
358 }
359
360 #if ENABLE(FULLSCREEN_API)
361 void WebPage::initializeInjectedBundleFullScreenClient(WKBundlePageFullScreenClient* client)
362 {
363     m_fullScreenClient.initialize(client);
364 }
365 #endif
366
367 PassRefPtr<Plugin> WebPage::createPlugin(WebFrame* frame, const Plugin::Parameters& parameters)
368 {
369     String pluginPath;
370
371     if (!WebProcess::shared().connection()->sendSync(
372             Messages::WebContext::GetPluginPath(parameters.mimeType, parameters.url.string()), 
373             Messages::WebContext::GetPluginPath::Reply(pluginPath), 0)) {
374         return 0;
375     }
376
377     if (pluginPath.isNull()) {
378 #if PLATFORM(MAC)
379         if (parameters.mimeType == "application/pdf"
380             || (parameters.mimeType.isEmpty() && parameters.url.path().lower().endsWith(".pdf")))
381             return BuiltInPDFView::create(frame);
382 #else
383         UNUSED_PARAM(frame);
384 #endif
385         return 0;
386     }
387
388 #if ENABLE(PLUGIN_PROCESS)
389     return PluginProxy::create(pluginPath);
390 #else
391     NetscapePlugin::setSetExceptionFunction(NPRuntimeObjectMap::setGlobalException);
392     return NetscapePlugin::create(NetscapePluginModule::getOrCreate(pluginPath));
393 #endif
394 }
395
396 EditorState WebPage::editorState() const
397 {
398     Frame* frame = m_page->focusController()->focusedOrMainFrame();
399     ASSERT(frame);
400
401     EditorState result;
402     result.selectionIsNone = frame->selection()->isNone();
403     result.selectionIsRange = frame->selection()->isRange();
404     result.isContentEditable = frame->selection()->isContentEditable();
405     result.isContentRichlyEditable = frame->selection()->isContentRichlyEditable();
406     result.isInPasswordField = frame->selection()->isInPasswordField();
407     result.hasComposition = frame->editor()->hasComposition();
408     result.shouldIgnoreCompositionSelectionChange = frame->editor()->ignoreCompositionSelectionChange();
409
410 #if PLATFORM(QT)
411     size_t location = 0;
412     size_t length = 0;
413
414     Element* selectionRoot = frame->selection()->rootEditableElement();
415     Element* scope = selectionRoot ? selectionRoot : frame->document()->documentElement();
416
417     if (!scope)
418         return result;
419
420     if (scope->hasTagName(HTMLNames::inputTag)) {
421         HTMLInputElement* input = static_cast<HTMLInputElement*>(scope);
422         if (input->isTelephoneField())
423             result.inputMethodHints |= Qt::ImhDialableCharactersOnly;
424         else if (input->isNumberField())
425             result.inputMethodHints |= Qt::ImhDigitsOnly;
426         else if (input->isEmailField()) {
427             result.inputMethodHints |= Qt::ImhEmailCharactersOnly;
428             result.inputMethodHints |= Qt::ImhNoAutoUppercase;
429         } else if (input->isURLField()) {
430             result.inputMethodHints |= Qt::ImhUrlCharactersOnly;
431             result.inputMethodHints |= Qt::ImhNoAutoUppercase;
432         } else if (input->isPasswordField()) {
433             // Set ImhHiddenText flag for password fields. The Qt platform
434             // is responsible for determining which widget will receive input
435             // method events for password fields.
436             result.inputMethodHints |= Qt::ImhHiddenText;
437             result.inputMethodHints |= Qt::ImhNoAutoUppercase;
438             result.inputMethodHints |= Qt::ImhNoPredictiveText;
439             result.inputMethodHints |= Qt::ImhSensitiveData;
440         }
441     }
442
443     if (selectionRoot)
444         result.editorRect = frame->view()->contentsToWindow(selectionRoot->getRect());
445
446     RefPtr<Range> range;
447     if (result.hasComposition && (range = frame->editor()->compositionRange())) {
448         frame->editor()->getCompositionSelection(result.anchorPosition, result.cursorPosition);
449
450         result.compositionRect = frame->view()->contentsToWindow(range->boundingBox());
451     }
452
453     if (!result.hasComposition && !result.selectionIsNone && (range = frame->selection()->selection().firstRange())) {
454         TextIterator::getLocationAndLengthFromRange(scope, range.get(), location, length);
455         bool baseIsFirst = frame->selection()->selection().isBaseFirst();
456
457         result.cursorPosition = (baseIsFirst) ? location + length : location;
458         result.anchorPosition = (baseIsFirst) ? location : location + length;
459         result.selectedText = range->text();
460     }
461
462     if (range)
463         result.cursorRect = frame->view()->contentsToWindow(frame->editor()->firstRectForRange(range.get()));
464
465     // FIXME: We should only transfer innerText when it changes and do this on the UI side.
466     if (result.isContentEditable && !result.isInPasswordField) {
467         result.surroundingText = scope->innerText();
468         if (result.hasComposition) {
469             // The anchor is always the left position when they represent a composition.
470             result.surroundingText.remove(result.anchorPosition, result.cursorPosition - result.anchorPosition);
471         }
472     }
473 #endif
474
475     return result;
476 }
477
478 String WebPage::renderTreeExternalRepresentation() const
479 {
480     return externalRepresentation(m_mainFrame->coreFrame(), RenderAsTextBehaviorNormal);
481 }
482
483 uint64_t WebPage::renderTreeSize() const
484 {
485     if (!m_page)
486         return 0;
487
488     Frame* mainFrame = m_page->mainFrame();
489     if (!mainFrame)
490         return 0;
491
492     uint64_t size = 0;
493     for (Frame* coreFrame = mainFrame; coreFrame; coreFrame = coreFrame->tree()->traverseNext())
494         size += coreFrame->document()->renderArena()->totalRenderArenaSize();
495
496     return size;
497 }
498
499 void WebPage::setPaintedObjectsCounterThreshold(uint64_t threshold)
500 {
501     if (!m_page)
502         return;
503     m_page->setRelevantRepaintedObjectsCounterThreshold(threshold);
504 }
505
506 void WebPage::setTracksRepaints(bool trackRepaints)
507 {
508     if (FrameView* view = mainFrameView())
509         view->setTracksRepaints(trackRepaints);
510 }
511
512 bool WebPage::isTrackingRepaints() const
513 {
514     if (FrameView* view = mainFrameView())
515         return view->isTrackingRepaints();
516
517     return false;
518 }
519
520 void WebPage::resetTrackedRepaints()
521 {
522     if (FrameView* view = mainFrameView())
523         view->resetTrackedRepaints();
524 }
525
526 PassRefPtr<ImmutableArray> WebPage::trackedRepaintRects()
527 {
528     FrameView* view = mainFrameView();
529     if (!view)
530         return ImmutableArray::create();
531
532     const Vector<IntRect>& rects = view->trackedRepaintRects();
533     size_t size = rects.size();
534     if (!size)
535         return ImmutableArray::create();
536
537     Vector<RefPtr<APIObject> > vector;
538     vector.reserveInitialCapacity(size);
539
540     for (size_t i = 0; i < size; ++i)
541         vector.uncheckedAppend(WebRect::create(toAPI(rects[i])));
542
543     return ImmutableArray::adopt(vector);
544 }
545
546 void WebPage::executeEditingCommand(const String& commandName, const String& argument)
547 {
548     Frame* frame = m_page->focusController()->focusedOrMainFrame();
549     if (!frame)
550         return;
551     frame->editor()->command(commandName).execute(argument);
552 }
553
554 bool WebPage::isEditingCommandEnabled(const String& commandName)
555 {
556     Frame* frame = m_page->focusController()->focusedOrMainFrame();
557     if (!frame)
558         return false;
559     
560     Editor::Command command = frame->editor()->command(commandName);
561     return command.isSupported() && command.isEnabled();
562 }
563     
564 void WebPage::clearMainFrameName()
565 {
566     if (Frame* frame = mainFrame())
567         frame->tree()->clearName();
568 }
569
570 #if USE(ACCELERATED_COMPOSITING)
571 void WebPage::enterAcceleratedCompositingMode(GraphicsLayer* layer)
572 {
573     m_drawingArea->setRootCompositingLayer(layer);
574 }
575
576 void WebPage::exitAcceleratedCompositingMode()
577 {
578     m_drawingArea->setRootCompositingLayer(0);
579 }
580 #endif
581
582 void WebPage::close()
583 {
584     if (m_isClosed)
585         return;
586
587     m_isClosed = true;
588
589     if (pageGroup()->isVisibleToInjectedBundle() && WebProcess::shared().injectedBundle())
590         WebProcess::shared().injectedBundle()->willDestroyPage(this);
591
592 #if ENABLE(INSPECTOR)
593     m_inspector = 0;
594 #endif
595 #if ENABLE(FULLSCREEN_API)
596     m_fullScreenManager = 0;
597 #endif
598
599     if (m_activePopupMenu) {
600         m_activePopupMenu->disconnectFromPage();
601         m_activePopupMenu = 0;
602     }
603
604     if (m_activeOpenPanelResultListener) {
605         m_activeOpenPanelResultListener->disconnectFromPage();
606         m_activeOpenPanelResultListener = 0;
607     }
608
609     m_sandboxExtensionTracker.invalidate();
610
611     m_underlayPage = nullptr;
612     m_printContext = nullptr;
613     m_mainFrame->coreFrame()->loader()->detachFromParent();
614     m_page = nullptr;
615     m_drawingArea = nullptr;
616
617     bool isRunningModal = m_isRunningModal;
618     m_isRunningModal = false;
619
620     // The WebPage can be destroyed by this call.
621     WebProcess::shared().removeWebPage(m_pageID);
622
623     if (isRunningModal)
624         WebProcess::shared().runLoop()->stop();
625 }
626
627 void WebPage::tryClose()
628 {
629     SendStopResponsivenessTimer stopper(this);
630
631     if (!m_mainFrame->coreFrame()->loader()->shouldClose()) {
632         send(Messages::WebPageProxy::StopResponsivenessTimer());
633         return;
634     }
635
636     send(Messages::WebPageProxy::ClosePage(true));
637 }
638
639 void WebPage::sendClose()
640 {
641     send(Messages::WebPageProxy::ClosePage(false));
642 }
643
644 void WebPage::loadURL(const String& url, const SandboxExtension::Handle& sandboxExtensionHandle)
645 {
646     loadURLRequest(ResourceRequest(KURL(KURL(), url)), sandboxExtensionHandle);
647 }
648
649 void WebPage::loadURLRequest(const ResourceRequest& request, const SandboxExtension::Handle& sandboxExtensionHandle)
650 {
651     SendStopResponsivenessTimer stopper(this);
652
653     m_sandboxExtensionTracker.beginLoad(m_mainFrame.get(), sandboxExtensionHandle);
654     m_mainFrame->coreFrame()->loader()->load(request, false);
655 }
656
657 void WebPage::loadData(PassRefPtr<SharedBuffer> sharedBuffer, const String& MIMEType, const String& encodingName, const KURL& baseURL, const KURL& unreachableURL)
658 {
659     SendStopResponsivenessTimer stopper(this);
660
661     ResourceRequest request(baseURL);
662     SubstituteData substituteData(sharedBuffer, MIMEType, encodingName, unreachableURL);
663     m_mainFrame->coreFrame()->loader()->load(request, substituteData, false);
664 }
665
666 void WebPage::loadHTMLString(const String& htmlString, const String& baseURLString)
667 {
668     RefPtr<SharedBuffer> sharedBuffer = SharedBuffer::create(reinterpret_cast<const char*>(htmlString.characters()), htmlString.length() * sizeof(UChar));
669     KURL baseURL = baseURLString.isEmpty() ? blankURL() : KURL(KURL(), baseURLString);
670     loadData(sharedBuffer, "text/html", "utf-16", baseURL, KURL());
671 }
672
673 void WebPage::loadAlternateHTMLString(const String& htmlString, const String& baseURLString, const String& unreachableURLString)
674 {
675     RefPtr<SharedBuffer> sharedBuffer = SharedBuffer::create(reinterpret_cast<const char*>(htmlString.characters()), htmlString.length() * sizeof(UChar));
676     KURL baseURL = baseURLString.isEmpty() ? blankURL() : KURL(KURL(), baseURLString);
677     KURL unreachableURL = unreachableURLString.isEmpty() ? KURL() : KURL(KURL(), unreachableURLString);
678     loadData(sharedBuffer, "text/html", "utf-16", baseURL, unreachableURL);
679 }
680
681 void WebPage::loadPlainTextString(const String& string)
682 {
683     RefPtr<SharedBuffer> sharedBuffer = SharedBuffer::create(reinterpret_cast<const char*>(string.characters()), string.length() * sizeof(UChar));
684     loadData(sharedBuffer, "text/plain", "utf-16", blankURL(), KURL());
685 }
686
687 void WebPage::loadWebArchiveData(const CoreIPC::DataReference& webArchiveData)
688 {
689     RefPtr<SharedBuffer> sharedBuffer = SharedBuffer::create(reinterpret_cast<const char*>(webArchiveData.data()), webArchiveData.size() * sizeof(uint8_t));
690     loadData(sharedBuffer, "application/x-webarchive", "utf-16", blankURL(), KURL());
691 }
692
693 void WebPage::linkClicked(const String& url, const WebMouseEvent& event)
694 {
695     Frame* frame = m_page->mainFrame();
696     if (!frame)
697         return;
698
699     RefPtr<Event> coreEvent;
700     if (event.type() != WebEvent::NoType)
701         coreEvent = MouseEvent::create(eventNames().clickEvent, frame->document()->defaultView(), platform(event), 0, 0);
702
703     frame->loader()->loadFrameRequest(FrameLoadRequest(frame->document()->securityOrigin(), ResourceRequest(url)), 
704         false, false, coreEvent.get(), 0, MaybeSendReferrer);
705 }
706
707 void WebPage::stopLoadingFrame(uint64_t frameID)
708 {
709     WebFrame* frame = WebProcess::shared().webFrame(frameID);
710     if (!frame)
711         return;
712
713     frame->coreFrame()->loader()->stopForUserCancel();
714 }
715
716 void WebPage::stopLoading()
717 {
718     SendStopResponsivenessTimer stopper(this);
719
720     m_mainFrame->coreFrame()->loader()->stopForUserCancel();
721 }
722
723 void WebPage::setDefersLoading(bool defersLoading)
724 {
725     m_page->setDefersLoading(defersLoading);
726 }
727
728 void WebPage::reload(bool reloadFromOrigin, const SandboxExtension::Handle& sandboxExtensionHandle)
729 {
730     SendStopResponsivenessTimer stopper(this);
731
732     m_sandboxExtensionTracker.beginLoad(m_mainFrame.get(), sandboxExtensionHandle);
733     m_mainFrame->coreFrame()->loader()->reload(reloadFromOrigin);
734 }
735
736 void WebPage::goForward(uint64_t backForwardItemID)
737 {
738     SendStopResponsivenessTimer stopper(this);
739
740     HistoryItem* item = WebBackForwardListProxy::itemForID(backForwardItemID);
741     ASSERT(item);
742     if (!item)
743         return;
744
745     m_page->goToItem(item, FrameLoadTypeForward);
746 }
747
748 void WebPage::goBack(uint64_t backForwardItemID)
749 {
750     SendStopResponsivenessTimer stopper(this);
751
752     HistoryItem* item = WebBackForwardListProxy::itemForID(backForwardItemID);
753     ASSERT(item);
754     if (!item)
755         return;
756
757     m_page->goToItem(item, FrameLoadTypeBack);
758 }
759
760 void WebPage::goToBackForwardItem(uint64_t backForwardItemID)
761 {
762     SendStopResponsivenessTimer stopper(this);
763
764     HistoryItem* item = WebBackForwardListProxy::itemForID(backForwardItemID);
765     ASSERT(item);
766     if (!item)
767         return;
768
769     m_page->goToItem(item, FrameLoadTypeIndexedBackForward);
770 }
771
772 void WebPage::tryRestoreScrollPosition()
773 {
774     m_page->mainFrame()->loader()->history()->restoreScrollPositionAndViewState();
775 }
776
777 void WebPage::layoutIfNeeded()
778 {
779     if (m_mainFrame->coreFrame()->view())
780         m_mainFrame->coreFrame()->view()->updateLayoutAndStyleIfNeededRecursive();
781
782     if (m_underlayPage) {
783         if (FrameView *frameView = m_underlayPage->mainFrameView())
784             frameView->updateLayoutAndStyleIfNeededRecursive();
785     }
786 }
787
788 void WebPage::setSize(const WebCore::IntSize& viewSize)
789 {
790     FrameView* view = m_page->mainFrame()->view();
791
792 #if USE(TILED_BACKING_STORE)
793     // If we are resizing to content ignore external attempts.
794     if (view->useFixedLayout())
795         return;
796 #endif
797
798     if (m_viewSize == viewSize)
799         return;
800
801     view->resize(viewSize);
802     view->setNeedsLayout();
803     m_drawingArea->setNeedsDisplay(IntRect(IntPoint(0, 0), viewSize));
804     
805     m_viewSize = viewSize;
806 }
807
808 #if USE(TILED_BACKING_STORE)
809 void WebPage::setFixedVisibleContentRect(const IntRect& rect)
810 {
811     ASSERT(m_useFixedLayout);
812
813     Frame* frame = m_page->mainFrame();
814
815     frame->view()->setFixedVisibleContentRect(rect);
816 }
817
818 void WebPage::setResizesToContentsUsingLayoutSize(const IntSize& targetLayoutSize)
819 {
820     ASSERT(m_useFixedLayout);
821     ASSERT(!targetLayoutSize.isEmpty());
822
823     FrameView* view = m_page->mainFrame()->view();
824
825     view->setDelegatesScrolling(true);
826     view->setUseFixedLayout(true);
827     view->setPaintsEntireContents(true);
828
829     if (view->fixedLayoutSize() == targetLayoutSize)
830         return;
831
832     // Always reset even when empty.
833     view->setFixedLayoutSize(targetLayoutSize);
834
835     // Schedule a layout to use the new target size.
836     if (!view->layoutPending()) {
837         view->setNeedsLayout();
838         view->scheduleRelayout();
839     }
840 }
841
842 void WebPage::resizeToContentsIfNeeded()
843 {
844     ASSERT(m_useFixedLayout);
845
846     FrameView* view = m_page->mainFrame()->view();
847
848     if (!view->useFixedLayout())
849         return;
850
851     IntSize contentSize = view->contentsSize();
852     if (contentSize == m_viewSize)
853         return;
854
855     m_viewSize = contentSize.expandedTo(view->fixedLayoutSize());
856     view->resize(m_viewSize);
857     view->setNeedsLayout();
858 }
859
860 void WebPage::setViewportSize(const IntSize& size)
861 {
862     ASSERT(m_useFixedLayout);
863
864     if (m_viewportSize == size)
865         return;
866
867      m_viewportSize = size;
868
869     // Recalculate the recommended layout size, when the available size (device pixel) changes.
870     Settings* settings = m_page->settings();
871
872     int minimumLayoutFallbackWidth = std::max(settings->layoutFallbackWidth(), size.width());
873
874     IntSize targetLayoutSize = computeViewportAttributes(m_page->viewportArguments(), minimumLayoutFallbackWidth, settings->deviceWidth(), settings->deviceHeight(), settings->deviceDPI(), size).layoutSize;
875     setResizesToContentsUsingLayoutSize(targetLayoutSize);
876 }
877
878 #endif
879
880 void WebPage::scrollMainFrameIfNotAtMaxScrollPosition(const IntSize& scrollOffset)
881 {
882     Frame* frame = m_page->mainFrame();
883
884     IntPoint scrollPosition = frame->view()->scrollPosition();
885     IntPoint maximumScrollPosition = frame->view()->maximumScrollPosition();
886
887     // If the current scroll position in a direction is the max scroll position 
888     // we don't want to scroll at all.
889     IntSize newScrollOffset;
890     if (scrollPosition.x() < maximumScrollPosition.x())
891         newScrollOffset.setWidth(scrollOffset.width());
892     if (scrollPosition.y() < maximumScrollPosition.y())
893         newScrollOffset.setHeight(scrollOffset.height());
894
895     if (newScrollOffset.isZero())
896         return;
897
898     frame->view()->setScrollPosition(frame->view()->scrollPosition() + newScrollOffset);
899 }
900
901 void WebPage::drawRect(GraphicsContext& graphicsContext, const IntRect& rect)
902 {
903     GraphicsContextStateSaver stateSaver(graphicsContext);
904     graphicsContext.clip(rect);
905
906     if (m_underlayPage) {
907         m_underlayPage->drawRect(graphicsContext, rect);
908
909         graphicsContext.beginTransparencyLayer(1);
910         m_mainFrame->coreFrame()->view()->paint(&graphicsContext, rect);
911         graphicsContext.endTransparencyLayer();
912         return;
913     }
914
915     m_mainFrame->coreFrame()->view()->paint(&graphicsContext, rect);
916 }
917
918 void WebPage::drawPageOverlay(GraphicsContext& graphicsContext, const IntRect& rect)
919 {
920     ASSERT(m_pageOverlay);
921
922     GraphicsContextStateSaver stateSaver(graphicsContext);
923     graphicsContext.clip(rect);
924     m_pageOverlay->drawRect(graphicsContext, rect);
925 }
926
927 double WebPage::textZoomFactor() const
928 {
929     Frame* frame = m_mainFrame->coreFrame();
930     if (!frame)
931         return 1;
932     return frame->textZoomFactor();
933 }
934
935 void WebPage::setTextZoomFactor(double zoomFactor)
936 {
937     Frame* frame = m_mainFrame->coreFrame();
938     if (!frame)
939         return;
940     frame->setTextZoomFactor(static_cast<float>(zoomFactor));
941 }
942
943 double WebPage::pageZoomFactor() const
944 {
945     Frame* frame = m_mainFrame->coreFrame();
946     if (!frame)
947         return 1;
948     return frame->pageZoomFactor();
949 }
950
951 void WebPage::setPageZoomFactor(double zoomFactor)
952 {
953     Frame* frame = m_mainFrame->coreFrame();
954     if (!frame)
955         return;
956     frame->setPageZoomFactor(static_cast<float>(zoomFactor));
957 }
958
959 void WebPage::setPageAndTextZoomFactors(double pageZoomFactor, double textZoomFactor)
960 {
961     Frame* frame = m_mainFrame->coreFrame();
962     if (!frame)
963         return;
964     return frame->setPageAndTextZoomFactors(static_cast<float>(pageZoomFactor), static_cast<float>(textZoomFactor));
965 }
966
967 void WebPage::windowScreenDidChange(uint64_t displayID)
968 {
969     m_page->windowScreenDidChange(static_cast<PlatformDisplayID>(displayID));
970 }
971
972 void WebPage::scalePage(double scale, const IntPoint& origin)
973 {
974     m_page->setPageScaleFactor(scale, origin);
975
976     send(Messages::WebPageProxy::PageScaleFactorDidChange(scale));
977 }
978
979 double WebPage::pageScaleFactor() const
980 {
981     return m_page->pageScaleFactor();
982 }
983
984 void WebPage::setDeviceScaleFactor(float scaleFactor)
985 {
986     if (scaleFactor == m_page->deviceScaleFactor())
987         return;
988
989     m_page->setDeviceScaleFactor(scaleFactor);
990
991     // Tell all our plug-in views that the device scale factor changed.
992 #if PLATFORM(MAC)
993     for (HashSet<PluginView*>::const_iterator it = m_pluginViews.begin(), end = m_pluginViews.end(); it != end; ++it)
994         (*it)->setDeviceScaleFactor(scaleFactor);
995 #endif
996
997     if (m_findController.isShowingOverlay()) {
998         // We must have updated layout to get the selection rects right.
999         layoutIfNeeded();
1000         m_findController.deviceScaleFactorDidChange();
1001     }
1002 }
1003
1004 float WebPage::deviceScaleFactor() const
1005 {
1006     return m_page->deviceScaleFactor();
1007 }
1008
1009 void WebPage::setUseFixedLayout(bool fixed)
1010 {
1011     m_useFixedLayout = fixed;
1012
1013     FrameView* view = mainFrameView();
1014     if (!view)
1015         return;
1016
1017     view->setUseFixedLayout(fixed);
1018     if (!fixed)
1019         view->setFixedLayoutSize(IntSize());
1020 }
1021
1022 void WebPage::setFixedLayoutSize(const IntSize& size)
1023 {
1024     FrameView* view = mainFrameView();
1025     if (!view)
1026         return;
1027
1028     view->setFixedLayoutSize(size);
1029     view->forceLayout();
1030 }
1031
1032 void WebPage::setPaginationMode(uint32_t mode)
1033 {
1034     Page::Pagination pagination = m_page->pagination();
1035     pagination.mode = static_cast<Page::Pagination::Mode>(mode);
1036     m_page->setPagination(pagination);
1037 }
1038
1039 void WebPage::setPaginationBehavesLikeColumns(bool behavesLikeColumns)
1040 {
1041     Page::Pagination pagination = m_page->pagination();
1042     pagination.behavesLikeColumns = behavesLikeColumns;
1043     m_page->setPagination(pagination);
1044 }
1045
1046 void WebPage::setPageLength(double pageLength)
1047 {
1048     Page::Pagination pagination = m_page->pagination();
1049     pagination.pageLength = pageLength;
1050     m_page->setPagination(pagination);
1051 }
1052
1053 void WebPage::setGapBetweenPages(double gap)
1054 {
1055     Page::Pagination pagination = m_page->pagination();
1056     pagination.gap = gap;
1057     m_page->setPagination(pagination);
1058 }
1059
1060 void WebPage::installPageOverlay(PassRefPtr<PageOverlay> pageOverlay)
1061 {
1062     bool shouldFadeIn = true;
1063     
1064     if (m_pageOverlay) {
1065         m_pageOverlay->setPage(0);
1066
1067         if (pageOverlay) {
1068             // We're installing a page overlay when a page overlay is already active.
1069             // In this case we don't want to fade in the new overlay.
1070             shouldFadeIn = false;
1071         }
1072     }
1073
1074     m_pageOverlay = pageOverlay;
1075     m_pageOverlay->setPage(this);
1076
1077     if (shouldFadeIn)
1078         m_pageOverlay->startFadeInAnimation();
1079
1080     m_drawingArea->didInstallPageOverlay();
1081 #if PLATFORM(WIN)
1082     send(Messages::WebPageProxy::DidInstallOrUninstallPageOverlay(true));
1083 #endif
1084
1085     m_pageOverlay->setNeedsDisplay();
1086 }
1087
1088 void WebPage::uninstallPageOverlay(PageOverlay* pageOverlay, bool fadeOut)
1089 {
1090     if (pageOverlay != m_pageOverlay)
1091         return;
1092
1093     if (fadeOut) {
1094         m_pageOverlay->startFadeOutAnimation();
1095         return;
1096     }
1097
1098     m_pageOverlay->setPage(0);
1099     m_pageOverlay = nullptr;
1100
1101     m_drawingArea->didUninstallPageOverlay();
1102 #if PLATFORM(WIN)
1103     send(Messages::WebPageProxy::DidInstallOrUninstallPageOverlay(false));
1104 #endif
1105 }
1106
1107 PassRefPtr<WebImage> WebPage::snapshotInViewCoordinates(const IntRect& rect, ImageOptions options)
1108 {
1109     FrameView* frameView = m_mainFrame->coreFrame()->view();
1110     if (!frameView)
1111         return 0;
1112
1113     IntSize bitmapSize = rect.size();
1114     float deviceScaleFactor = corePage()->deviceScaleFactor();
1115     bitmapSize.scale(deviceScaleFactor);
1116
1117     RefPtr<WebImage> snapshot = WebImage::create(bitmapSize, options);
1118     if (!snapshot->bitmap())
1119         return 0;
1120     
1121     OwnPtr<WebCore::GraphicsContext> graphicsContext = snapshot->bitmap()->createGraphicsContext();
1122     graphicsContext->applyDeviceScaleFactor(deviceScaleFactor);
1123     graphicsContext->translate(-rect.x(), -rect.y());
1124
1125     frameView->updateLayoutAndStyleIfNeededRecursive();
1126
1127     PaintBehavior oldBehavior = frameView->paintBehavior();
1128     frameView->setPaintBehavior(oldBehavior | PaintBehaviorFlattenCompositingLayers);
1129     frameView->paint(graphicsContext.get(), rect);
1130     frameView->setPaintBehavior(oldBehavior);
1131
1132     return snapshot.release();
1133 }
1134
1135 PassRefPtr<WebImage> WebPage::scaledSnapshotInDocumentCoordinates(const IntRect& rect, double scaleFactor, ImageOptions options)
1136 {
1137     FrameView* frameView = m_mainFrame->coreFrame()->view();
1138     if (!frameView)
1139         return 0;
1140
1141     float combinedScaleFactor = scaleFactor * corePage()->deviceScaleFactor();
1142     IntSize size(ceil(rect.width() * combinedScaleFactor), ceil(rect.height() * combinedScaleFactor));
1143     RefPtr<WebImage> snapshot = WebImage::create(size, options);
1144     if (!snapshot->bitmap())
1145         return 0;
1146
1147     OwnPtr<WebCore::GraphicsContext> graphicsContext = snapshot->bitmap()->createGraphicsContext();
1148     graphicsContext->applyDeviceScaleFactor(combinedScaleFactor);
1149     graphicsContext->translate(-rect.x(), -rect.y());
1150
1151     frameView->updateLayoutAndStyleIfNeededRecursive();
1152
1153     PaintBehavior oldBehavior = frameView->paintBehavior();
1154     frameView->setPaintBehavior(oldBehavior | PaintBehaviorFlattenCompositingLayers);
1155     frameView->paintContents(graphicsContext.get(), rect);
1156     frameView->setPaintBehavior(oldBehavior);
1157
1158     return snapshot.release();
1159 }
1160
1161 PassRefPtr<WebImage> WebPage::snapshotInDocumentCoordinates(const IntRect& rect, ImageOptions options)
1162 {
1163     return scaledSnapshotInDocumentCoordinates(rect, 1, options);
1164 }
1165
1166 void WebPage::pageDidScroll()
1167 {
1168     m_uiClient.pageDidScroll(this);
1169
1170     send(Messages::WebPageProxy::PageDidScroll());
1171 }
1172
1173 #if USE(TILED_BACKING_STORE)
1174 void WebPage::pageDidRequestScroll(const IntPoint& point)
1175 {
1176     send(Messages::WebPageProxy::PageDidRequestScroll(point));
1177 }
1178 #endif
1179
1180 WebContextMenu* WebPage::contextMenu()
1181 {
1182     if (!m_contextMenu)
1183         m_contextMenu = WebContextMenu::create(this);
1184     return m_contextMenu.get();
1185 }
1186
1187 // Events 
1188
1189 static const WebEvent* g_currentEvent = 0;
1190
1191 // FIXME: WebPage::currentEvent is used by the plug-in code to avoid having to convert from DOM events back to
1192 // WebEvents. When we get the event handling sorted out, this should go away and the Widgets should get the correct
1193 // platform events passed to the event handler code.
1194 const WebEvent* WebPage::currentEvent()
1195 {
1196     return g_currentEvent;
1197 }
1198
1199 class CurrentEvent {
1200 public:
1201     explicit CurrentEvent(const WebEvent& event)
1202         : m_previousCurrentEvent(g_currentEvent)
1203     {
1204         g_currentEvent = &event;
1205     }
1206
1207     ~CurrentEvent()
1208     {
1209         g_currentEvent = m_previousCurrentEvent;
1210     }
1211
1212 private:
1213     const WebEvent* m_previousCurrentEvent;
1214 };
1215
1216 static bool isContextClick(const PlatformMouseEvent& event)
1217 {
1218     if (event.button() == WebCore::RightButton)
1219         return true;
1220
1221 #if PLATFORM(MAC)
1222     // FIXME: this really should be about OSX-style UI, not about the Mac port
1223     if (event.button() == WebCore::LeftButton && event.ctrlKey())
1224         return true;
1225 #endif
1226
1227     return false;
1228 }
1229
1230 static bool handleContextMenuEvent(const PlatformMouseEvent& platformMouseEvent, WebPage* page)
1231 {
1232     IntPoint point = page->corePage()->mainFrame()->view()->windowToContents(platformMouseEvent.position());
1233     HitTestResult result = page->corePage()->mainFrame()->eventHandler()->hitTestResultAtPoint(point, false);
1234
1235     Frame* frame = page->corePage()->mainFrame();
1236     if (result.innerNonSharedNode())
1237         frame = result.innerNonSharedNode()->document()->frame();
1238     
1239     bool handled = frame->eventHandler()->sendContextMenuEvent(platformMouseEvent);
1240     if (handled)
1241         page->contextMenu()->show();
1242
1243     return handled;
1244 }
1245
1246 static bool handleMouseEvent(const WebMouseEvent& mouseEvent, WebPage* page, bool onlyUpdateScrollbars)
1247 {
1248     Frame* frame = page->corePage()->mainFrame();
1249     if (!frame->view())
1250         return false;
1251
1252     PlatformMouseEvent platformMouseEvent = platform(mouseEvent);
1253
1254     switch (platformMouseEvent.type()) {
1255         case PlatformEvent::MousePressed: {
1256             if (isContextClick(platformMouseEvent))
1257                 page->corePage()->contextMenuController()->clearContextMenu();
1258             
1259             bool handled = frame->eventHandler()->handleMousePressEvent(platformMouseEvent);
1260             if (isContextClick(platformMouseEvent))
1261                 handled = handleContextMenuEvent(platformMouseEvent, page);
1262
1263             return handled;
1264         }
1265         case PlatformEvent::MouseReleased:
1266             return frame->eventHandler()->handleMouseReleaseEvent(platformMouseEvent);
1267         case PlatformEvent::MouseMoved:
1268             if (onlyUpdateScrollbars)
1269                 return frame->eventHandler()->passMouseMovedEventToScrollbars(platformMouseEvent);
1270             return frame->eventHandler()->mouseMoved(platformMouseEvent);
1271         default:
1272             ASSERT_NOT_REACHED();
1273             return false;
1274     }
1275 }
1276
1277 void WebPage::mouseEvent(const WebMouseEvent& mouseEvent)
1278 {
1279     // Don't try to handle any pending mouse events if a context menu is showing.
1280     if (m_isShowingContextMenu) {
1281         send(Messages::WebPageProxy::DidReceiveEvent(static_cast<uint32_t>(mouseEvent.type()), false));
1282         return;
1283     }
1284     
1285     bool handled = false;
1286     
1287     if (m_pageOverlay) {
1288         // Let the page overlay handle the event.
1289         handled = m_pageOverlay->mouseEvent(mouseEvent);
1290     }
1291
1292     if (!handled) {
1293         CurrentEvent currentEvent(mouseEvent);
1294
1295         // We need to do a full, normal hit test during this mouse event if the page is active or if a mouse
1296         // button is currently pressed. It is possible that neither of those things will be true since on 
1297         // Lion when legacy scrollbars are enabled, WebKit receives mouse events all the time. If it is one 
1298         // of those cases where the page is not active and the mouse is not pressed, then we can fire a more
1299         // efficient scrollbars-only version of the event.
1300         bool onlyUpdateScrollbars = !(m_page->focusController()->isActive() || (mouseEvent.button() != WebMouseEvent::NoButton));
1301         handled = handleMouseEvent(mouseEvent, this, onlyUpdateScrollbars);
1302     }
1303
1304     send(Messages::WebPageProxy::DidReceiveEvent(static_cast<uint32_t>(mouseEvent.type()), handled));
1305 }
1306
1307 void WebPage::mouseEventSyncForTesting(const WebMouseEvent& mouseEvent, bool& handled)
1308 {
1309     handled = m_pageOverlay && m_pageOverlay->mouseEvent(mouseEvent);
1310
1311     if (!handled) {
1312         CurrentEvent currentEvent(mouseEvent);
1313
1314         // We need to do a full, normal hit test during this mouse event if the page is active or if a mouse
1315         // button is currently pressed. It is possible that neither of those things will be true since on 
1316         // Lion when legacy scrollbars are enabled, WebKit receives mouse events all the time. If it is one 
1317         // of those cases where the page is not active and the mouse is not pressed, then we can fire a more
1318         // efficient scrollbars-only version of the event.
1319         bool onlyUpdateScrollbars = !(m_page->focusController()->isActive() || (mouseEvent.button() != WebMouseEvent::NoButton));
1320         handled = handleMouseEvent(mouseEvent, this, onlyUpdateScrollbars);
1321     }
1322 }
1323
1324 static bool handleWheelEvent(const WebWheelEvent& wheelEvent, Page* page)
1325 {
1326     Frame* frame = page->mainFrame();
1327     if (!frame->view())
1328         return false;
1329
1330     PlatformWheelEvent platformWheelEvent = platform(wheelEvent);
1331     return frame->eventHandler()->handleWheelEvent(platformWheelEvent);
1332 }
1333
1334 void WebPage::wheelEvent(const WebWheelEvent& wheelEvent)
1335 {
1336     CurrentEvent currentEvent(wheelEvent);
1337
1338     bool handled = handleWheelEvent(wheelEvent, m_page.get());
1339     send(Messages::WebPageProxy::DidReceiveEvent(static_cast<uint32_t>(wheelEvent.type()), handled));
1340 }
1341
1342 void WebPage::wheelEventSyncForTesting(const WebWheelEvent& wheelEvent, bool& handled)
1343 {
1344     CurrentEvent currentEvent(wheelEvent);
1345
1346     handled = handleWheelEvent(wheelEvent, m_page.get());
1347 }
1348
1349 static bool handleKeyEvent(const WebKeyboardEvent& keyboardEvent, Page* page)
1350 {
1351     if (!page->mainFrame()->view())
1352         return false;
1353
1354     if (keyboardEvent.type() == WebEvent::Char && keyboardEvent.isSystemKey())
1355         return page->focusController()->focusedOrMainFrame()->eventHandler()->handleAccessKey(platform(keyboardEvent));
1356     return page->focusController()->focusedOrMainFrame()->eventHandler()->keyEvent(platform(keyboardEvent));
1357 }
1358
1359 void WebPage::keyEvent(const WebKeyboardEvent& keyboardEvent)
1360 {
1361     CurrentEvent currentEvent(keyboardEvent);
1362
1363     bool handled = handleKeyEvent(keyboardEvent, m_page.get());
1364     // FIXME: Platform default behaviors should be performed during normal DOM event dispatch (in most cases, in default keydown event handler).
1365     if (!handled)
1366         handled = performDefaultBehaviorForKeyEvent(keyboardEvent);
1367
1368     send(Messages::WebPageProxy::DidReceiveEvent(static_cast<uint32_t>(keyboardEvent.type()), handled));
1369 }
1370
1371 void WebPage::keyEventSyncForTesting(const WebKeyboardEvent& keyboardEvent, bool& handled)
1372 {
1373     CurrentEvent currentEvent(keyboardEvent);
1374
1375     handled = handleKeyEvent(keyboardEvent, m_page.get());
1376     if (!handled)
1377         handled = performDefaultBehaviorForKeyEvent(keyboardEvent);
1378 }
1379
1380 #if ENABLE(GESTURE_EVENTS)
1381 static bool handleGestureEvent(const WebGestureEvent& gestureEvent, Page* page)
1382 {
1383     Frame* frame = page->mainFrame();
1384     if (!frame->view())
1385         return false;
1386
1387     PlatformGestureEvent platformGestureEvent = platform(gestureEvent);
1388     return frame->eventHandler()->handleGestureEvent(platformGestureEvent);
1389 }
1390
1391 void WebPage::gestureEvent(const WebGestureEvent& gestureEvent)
1392 {
1393     CurrentEvent currentEvent(gestureEvent);
1394
1395     bool handled = handleGestureEvent(gestureEvent, m_page.get());
1396     send(Messages::WebPageProxy::DidReceiveEvent(static_cast<uint32_t>(gestureEvent.type()), handled));
1397 }
1398 #endif
1399
1400 void WebPage::validateCommand(const String& commandName, uint64_t callbackID)
1401 {
1402     bool isEnabled = false;
1403     int32_t state = 0;
1404     Frame* frame = m_page->focusController()->focusedOrMainFrame();
1405     if (frame) {
1406         Editor::Command command = frame->editor()->command(commandName);
1407         state = command.state();
1408         isEnabled = command.isSupported() && command.isEnabled();
1409     }
1410
1411     send(Messages::WebPageProxy::ValidateCommandCallback(commandName, isEnabled, state, callbackID));
1412 }
1413
1414 void WebPage::executeEditCommand(const String& commandName)
1415 {
1416     executeEditingCommand(commandName, String());
1417 }
1418
1419 uint64_t WebPage::restoreSession(const SessionState& sessionState)
1420 {
1421     const BackForwardListItemVector& list = sessionState.list();
1422     size_t size = list.size();
1423     uint64_t currentItemID = 0;
1424     for (size_t i = 0; i < size; ++i) {
1425         WebBackForwardListItem* webItem = list[i].get();
1426         DecoderAdapter decoder(webItem->backForwardData().data(), webItem->backForwardData().size());
1427         
1428         RefPtr<HistoryItem> item = HistoryItem::decodeBackForwardTree(webItem->url(), webItem->title(), webItem->originalURL(), decoder);
1429         if (!item) {
1430             LOG_ERROR("Failed to decode a HistoryItem from session state data.");
1431             return 0;
1432         }
1433         
1434         if (i == sessionState.currentIndex())
1435             currentItemID = webItem->itemID();
1436         
1437         WebBackForwardListProxy::addItemFromUIProcess(list[i]->itemID(), item.release());
1438     }    
1439     ASSERT(currentItemID);
1440     return currentItemID;
1441 }
1442
1443 void WebPage::restoreSessionAndNavigateToCurrentItem(const SessionState& sessionState)
1444 {
1445     if (uint64_t currentItemID = restoreSession(sessionState))
1446         goToBackForwardItem(currentItemID);
1447 }
1448
1449 #if ENABLE(TOUCH_EVENTS)
1450 #if PLATFORM(QT)
1451 void WebPage::highlightPotentialActivation(const IntPoint& point, const IntSize& area)
1452 {
1453     Node* activationNode = 0;
1454     Frame* mainframe = m_page->mainFrame();
1455     IntPoint adjustedPoint;
1456
1457     if (point != IntPoint::zero()) {
1458 #if ENABLE(TOUCH_ADJUSTMENT)
1459         mainframe->eventHandler()->bestClickableNodeForTouchPoint(point, IntSize(area.width() / 2, area.height() / 2), adjustedPoint, activationNode);
1460 #else
1461         HitTestResult result = mainframe->eventHandler()->hitTestResultAtPoint(mainframe->view()->windowToContents(point), /*allowShadowContent*/ false, /*ignoreClipping*/ true);
1462         activationNode = result.innerNode();
1463 #endif
1464         if (activationNode && !activationNode->isFocusable())
1465             activationNode = activationNode->enclosingLinkEventParentOrSelf();
1466     }
1467
1468     if (activationNode)
1469         tapHighlightController().highlight(activationNode);
1470     else
1471         tapHighlightController().hideHighlight();
1472 }
1473 #endif
1474
1475 static bool handleTouchEvent(const WebTouchEvent& touchEvent, Page* page)
1476 {
1477     Frame* frame = page->mainFrame();
1478     if (!frame->view())
1479         return false;
1480
1481     return frame->eventHandler()->handleTouchEvent(platform(touchEvent));
1482 }
1483
1484 void WebPage::touchEvent(const WebTouchEvent& touchEvent)
1485 {
1486     CurrentEvent currentEvent(touchEvent);
1487
1488     bool handled = handleTouchEvent(touchEvent, m_page.get());
1489
1490     send(Messages::WebPageProxy::DidReceiveEvent(static_cast<uint32_t>(touchEvent.type()), handled));
1491 }
1492
1493 void WebPage::touchEventSyncForTesting(const WebTouchEvent& touchEvent, bool& handled)
1494 {
1495     CurrentEvent currentEvent(touchEvent);
1496     handled = handleTouchEvent(touchEvent, m_page.get());
1497 }
1498 #endif
1499
1500 void WebPage::scroll(Page* page, ScrollDirection direction, ScrollGranularity granularity)
1501 {
1502     page->focusController()->focusedOrMainFrame()->eventHandler()->scrollRecursively(direction, granularity);
1503 }
1504
1505 void WebPage::logicalScroll(Page* page, ScrollLogicalDirection direction, ScrollGranularity granularity)
1506 {
1507     page->focusController()->focusedOrMainFrame()->eventHandler()->logicalScrollRecursively(direction, granularity);
1508 }
1509
1510 void WebPage::scrollBy(uint32_t scrollDirection, uint32_t scrollGranularity)
1511 {
1512     scroll(m_page.get(), static_cast<ScrollDirection>(scrollDirection), static_cast<ScrollGranularity>(scrollGranularity));
1513 }
1514
1515 void WebPage::centerSelectionInVisibleArea()
1516 {
1517     Frame* frame = m_page->focusController()->focusedOrMainFrame();
1518     if (!frame)
1519         return;
1520     
1521     frame->selection()->revealSelection(ScrollAlignment::alignCenterAlways);
1522     m_findController.showFindIndicatorInSelection();
1523 }
1524
1525 void WebPage::setActive(bool isActive)
1526 {
1527     m_page->focusController()->setActive(isActive);
1528
1529 #if PLATFORM(MAC)    
1530     // Tell all our plug-in views that the window focus changed.
1531     for (HashSet<PluginView*>::const_iterator it = m_pluginViews.begin(), end = m_pluginViews.end(); it != end; ++it)
1532         (*it)->setWindowIsFocused(isActive);
1533 #endif
1534 }
1535
1536 void WebPage::setDrawsBackground(bool drawsBackground)
1537 {
1538     if (m_drawsBackground == drawsBackground)
1539         return;
1540
1541     m_drawsBackground = drawsBackground;
1542
1543     for (Frame* coreFrame = m_mainFrame->coreFrame(); coreFrame; coreFrame = coreFrame->tree()->traverseNext()) {
1544         if (FrameView* view = coreFrame->view())
1545             view->setTransparent(!drawsBackground);
1546     }
1547
1548     m_drawingArea->pageBackgroundTransparencyChanged();
1549     m_drawingArea->setNeedsDisplay(IntRect(IntPoint(0, 0), m_viewSize));
1550 }
1551
1552 void WebPage::setDrawsTransparentBackground(bool drawsTransparentBackground)
1553 {
1554     if (m_drawsTransparentBackground == drawsTransparentBackground)
1555         return;
1556
1557     m_drawsTransparentBackground = drawsTransparentBackground;
1558
1559     Color backgroundColor = drawsTransparentBackground ? Color::transparent : Color::white;
1560     for (Frame* coreFrame = m_mainFrame->coreFrame(); coreFrame; coreFrame = coreFrame->tree()->traverseNext()) {
1561         if (FrameView* view = coreFrame->view())
1562             view->setBaseBackgroundColor(backgroundColor);
1563     }
1564
1565     m_drawingArea->pageBackgroundTransparencyChanged();
1566     m_drawingArea->setNeedsDisplay(IntRect(IntPoint(0, 0), m_viewSize));
1567 }
1568
1569 void WebPage::viewWillStartLiveResize()
1570 {
1571     if (!m_page)
1572         return;
1573
1574     // FIXME: This should propagate to all ScrollableAreas.
1575     if (Frame* frame = m_page->focusController()->focusedOrMainFrame()) {
1576         if (FrameView* view = frame->view())
1577             view->willStartLiveResize();
1578     }
1579 }
1580
1581 void WebPage::viewWillEndLiveResize()
1582 {
1583     if (!m_page)
1584         return;
1585
1586     // FIXME: This should propagate to all ScrollableAreas.
1587     if (Frame* frame = m_page->focusController()->focusedOrMainFrame()) {
1588         if (FrameView* view = frame->view())
1589             view->willEndLiveResize();
1590     }
1591 }
1592
1593 void WebPage::setFocused(bool isFocused)
1594 {
1595     m_page->focusController()->setFocused(isFocused);
1596 }
1597
1598 void WebPage::setInitialFocus(bool forward, bool isKeyboardEventValid, const WebKeyboardEvent& event)
1599 {
1600     if (!m_page || !m_page->focusController())
1601         return;
1602
1603     Frame* frame = m_page->focusController()->focusedOrMainFrame();
1604     frame->document()->setFocusedNode(0);
1605
1606     if (isKeyboardEventValid && event.type() == WebEvent::KeyDown) {
1607         PlatformKeyboardEvent platformEvent(platform(event));
1608         platformEvent.disambiguateKeyDownEvent(PlatformEvent::RawKeyDown);
1609         m_page->focusController()->setInitialFocus(forward ? FocusDirectionForward : FocusDirectionBackward, KeyboardEvent::create(platformEvent, frame->document()->defaultView()).get());
1610         return;
1611     }
1612
1613     m_page->focusController()->setInitialFocus(forward ? FocusDirectionForward : FocusDirectionBackward, 0);
1614 }
1615
1616 void WebPage::setWindowResizerSize(const IntSize& windowResizerSize)
1617 {
1618     if (m_windowResizerSize == windowResizerSize)
1619         return;
1620
1621     m_windowResizerSize = windowResizerSize;
1622
1623     for (Frame* coreFrame = m_mainFrame->coreFrame(); coreFrame; coreFrame = coreFrame->tree()->traverseNext()) {
1624         FrameView* view = coreFrame->view();
1625         if (view)
1626             view->windowResizerRectChanged();
1627     }
1628 }
1629
1630 void WebPage::setCanStartMediaTimerFired()
1631 {
1632     if (m_page)
1633         m_page->setCanStartMedia(true);
1634 }
1635
1636 void WebPage::setIsInWindow(bool isInWindow)
1637 {
1638     if (!isInWindow) {
1639         m_setCanStartMediaTimer.stop();
1640         m_page->setCanStartMedia(false);
1641         m_page->willMoveOffscreen();
1642     } else {
1643         // Defer the call to Page::setCanStartMedia() since it ends up sending a syncrhonous messages to the UI process
1644         // in order to get plug-in connections, and the UI process will be waiting for the Web process to update the backing
1645         // store after moving the view into a window, until it times out and paints white. See <rdar://problem/9242771>.
1646         m_setCanStartMediaTimer.startOneShot(0);
1647         m_page->didMoveOnscreen();
1648     }
1649 }
1650
1651 void WebPage::didReceivePolicyDecision(uint64_t frameID, uint64_t listenerID, uint32_t policyAction, uint64_t downloadID)
1652 {
1653     WebFrame* frame = WebProcess::shared().webFrame(frameID);
1654     if (!frame)
1655         return;
1656     frame->didReceivePolicyDecision(listenerID, static_cast<PolicyAction>(policyAction), downloadID);
1657 }
1658
1659 void WebPage::show()
1660 {
1661     send(Messages::WebPageProxy::ShowPage());
1662 }
1663
1664 void WebPage::setUserAgent(const String& userAgent)
1665 {
1666     m_userAgent = userAgent;
1667 }
1668
1669 void WebPage::suspendActiveDOMObjectsAndAnimations()
1670 {
1671     m_page->suspendActiveDOMObjectsAndAnimations();
1672 }
1673
1674 void WebPage::resumeActiveDOMObjectsAndAnimations()
1675 {
1676     m_page->resumeActiveDOMObjectsAndAnimations();
1677
1678     // We need to repaint on resume to kickstart animated painting again.
1679     m_drawingArea->setNeedsDisplay(IntRect(IntPoint(0, 0), m_viewSize));
1680 }
1681
1682 IntPoint WebPage::screenToWindow(const IntPoint& point)
1683 {
1684     IntPoint windowPoint;
1685     sendSync(Messages::WebPageProxy::ScreenToWindow(point), Messages::WebPageProxy::ScreenToWindow::Reply(windowPoint));
1686     return windowPoint;
1687 }
1688     
1689 IntRect WebPage::windowToScreen(const IntRect& rect)
1690 {
1691     IntRect screenRect;
1692     sendSync(Messages::WebPageProxy::WindowToScreen(rect), Messages::WebPageProxy::WindowToScreen::Reply(screenRect));
1693     return screenRect;
1694 }
1695
1696 IntRect WebPage::windowResizerRect() const
1697 {
1698     if (m_windowResizerSize.isEmpty())
1699         return IntRect();
1700
1701     IntSize frameViewSize;
1702     if (Frame* coreFrame = m_mainFrame->coreFrame()) {
1703         if (FrameView* view = coreFrame->view())
1704             frameViewSize = view->size();
1705     }
1706
1707     return IntRect(frameViewSize.width() - m_windowResizerSize.width(), frameViewSize.height() - m_windowResizerSize.height(), 
1708                    m_windowResizerSize.width(), m_windowResizerSize.height());
1709 }
1710
1711 KeyboardUIMode WebPage::keyboardUIMode()
1712 {
1713     bool fullKeyboardAccessEnabled = WebProcess::shared().fullKeyboardAccessEnabled();
1714     return static_cast<KeyboardUIMode>((fullKeyboardAccessEnabled ? KeyboardAccessFull : KeyboardAccessDefault) | (m_tabToLinks ? KeyboardAccessTabsToLinks : 0));
1715 }
1716
1717 void WebPage::runJavaScriptInMainFrame(const String& script, uint64_t callbackID)
1718 {
1719     // NOTE: We need to be careful when running scripts that the objects we depend on don't
1720     // disappear during script execution.
1721
1722     // Retain the SerializedScriptValue at this level so it (and the internal data) lives
1723     // long enough for the DataReference to be encoded by the sent message.
1724     RefPtr<SerializedScriptValue> serializedResultValue;
1725     CoreIPC::DataReference dataReference;
1726
1727     JSLock lock(SilenceAssertionsOnly);
1728     if (JSValue resultValue = m_mainFrame->coreFrame()->script()->executeScript(script, true).jsValue()) {
1729         if ((serializedResultValue = SerializedScriptValue::create(m_mainFrame->jsContext(), toRef(m_mainFrame->coreFrame()->script()->globalObject(mainThreadNormalWorld())->globalExec(), resultValue), 0)))
1730             dataReference = serializedResultValue->data();
1731     }
1732
1733     send(Messages::WebPageProxy::ScriptValueCallback(dataReference, callbackID));
1734 }
1735
1736 void WebPage::getContentsAsString(uint64_t callbackID)
1737 {
1738     String resultString = m_mainFrame->contentsAsString();
1739     send(Messages::WebPageProxy::StringCallback(resultString, callbackID));
1740 }
1741
1742 void WebPage::getRenderTreeExternalRepresentation(uint64_t callbackID)
1743 {
1744     String resultString = renderTreeExternalRepresentation();
1745     send(Messages::WebPageProxy::StringCallback(resultString, callbackID));
1746 }
1747
1748 void WebPage::getSelectionOrContentsAsString(uint64_t callbackID)
1749 {
1750     String resultString = m_mainFrame->selectionAsString();
1751     if (resultString.isEmpty())
1752         resultString = m_mainFrame->contentsAsString();
1753     send(Messages::WebPageProxy::StringCallback(resultString, callbackID));
1754 }
1755
1756 void WebPage::getSourceForFrame(uint64_t frameID, uint64_t callbackID)
1757 {
1758     String resultString;
1759     if (WebFrame* frame = WebProcess::shared().webFrame(frameID))
1760        resultString = frame->source();
1761
1762     send(Messages::WebPageProxy::StringCallback(resultString, callbackID));
1763 }
1764
1765 void WebPage::getMainResourceDataOfFrame(uint64_t frameID, uint64_t callbackID)
1766 {
1767     CoreIPC::DataReference dataReference;
1768
1769     RefPtr<SharedBuffer> buffer;
1770     if (WebFrame* frame = WebProcess::shared().webFrame(frameID)) {
1771         if (DocumentLoader* loader = frame->coreFrame()->loader()->documentLoader()) {
1772             if ((buffer = loader->mainResourceData()))
1773                 dataReference = CoreIPC::DataReference(reinterpret_cast<const uint8_t*>(buffer->data()), buffer->size());
1774         }
1775     }
1776
1777     send(Messages::WebPageProxy::DataCallback(dataReference, callbackID));
1778 }
1779
1780 static PassRefPtr<SharedBuffer> resourceDataForFrame(Frame* frame, const KURL& resourceURL)
1781 {
1782     DocumentLoader* loader = frame->loader()->documentLoader();
1783     if (!loader)
1784         return 0;
1785
1786     RefPtr<ArchiveResource> subresource = loader->subresource(resourceURL);
1787     if (!subresource)
1788         return 0;
1789
1790     return subresource->data();
1791 }
1792
1793 void WebPage::getResourceDataFromFrame(uint64_t frameID, const String& resourceURLString, uint64_t callbackID)
1794 {
1795     CoreIPC::DataReference dataReference;
1796     KURL resourceURL(KURL(), resourceURLString);
1797
1798     RefPtr<SharedBuffer> buffer;
1799     if (WebFrame* frame = WebProcess::shared().webFrame(frameID)) {
1800         buffer = resourceDataForFrame(frame->coreFrame(), resourceURL);
1801         if (!buffer) {
1802             // Try to get the resource data from the cache.
1803             buffer = cachedResponseDataForURL(resourceURL);
1804         }
1805
1806         if (buffer)
1807             dataReference = CoreIPC::DataReference(reinterpret_cast<const uint8_t*>(buffer->data()), buffer->size());
1808     }
1809
1810     send(Messages::WebPageProxy::DataCallback(dataReference, callbackID));
1811 }
1812
1813 void WebPage::getWebArchiveOfFrame(uint64_t frameID, uint64_t callbackID)
1814 {
1815     CoreIPC::DataReference dataReference;
1816
1817 #if PLATFORM(MAC) || PLATFORM(WIN)
1818     RetainPtr<CFDataRef> data;
1819     if (WebFrame* frame = WebProcess::shared().webFrame(frameID)) {
1820         if ((data = frame->webArchiveData(0, 0)))
1821             dataReference = CoreIPC::DataReference(CFDataGetBytePtr(data.get()), CFDataGetLength(data.get()));
1822     }
1823 #endif
1824
1825     send(Messages::WebPageProxy::DataCallback(dataReference, callbackID));
1826 }
1827
1828 void WebPage::forceRepaintWithoutCallback()
1829 {
1830     m_drawingArea->forceRepaint();
1831 }
1832
1833 void WebPage::forceRepaint(uint64_t callbackID)
1834 {
1835     if (m_drawingArea->forceRepaintAsync(callbackID))
1836         return;
1837
1838     forceRepaintWithoutCallback();
1839     send(Messages::WebPageProxy::VoidCallback(callbackID));
1840 }
1841
1842 void WebPage::preferencesDidChange(const WebPreferencesStore& store)
1843 {
1844     WebPreferencesStore::removeTestRunnerOverrides();
1845     updatePreferences(store);
1846 }
1847
1848 void WebPage::updatePreferences(const WebPreferencesStore& store)
1849 {
1850     Settings* settings = m_page->settings();
1851
1852     m_tabToLinks = store.getBoolValueForKey(WebPreferencesKey::tabsToLinksKey());
1853
1854     // FIXME: This should be generated from macro expansion for all preferences,
1855     // but we currently don't match the naming of WebCore exactly so we are
1856     // handrolling the boolean and integer preferences until that is fixed.
1857
1858 #define INITIALIZE_SETTINGS(KeyUpper, KeyLower, TypeName, Type, DefaultValue) settings->set##KeyUpper(store.get##TypeName##ValueForKey(WebPreferencesKey::KeyLower##Key()));
1859
1860     FOR_EACH_WEBKIT_STRING_PREFERENCE(INITIALIZE_SETTINGS)
1861
1862 #undef INITIALIZE_SETTINGS
1863
1864     settings->setScriptEnabled(store.getBoolValueForKey(WebPreferencesKey::javaScriptEnabledKey()));
1865     settings->setLoadsImagesAutomatically(store.getBoolValueForKey(WebPreferencesKey::loadsImagesAutomaticallyKey()));
1866     settings->setLoadsSiteIconsIgnoringImageLoadingSetting(store.getBoolValueForKey(WebPreferencesKey::loadsSiteIconsIgnoringImageLoadingPreferenceKey()));
1867     settings->setPluginsEnabled(store.getBoolValueForKey(WebPreferencesKey::pluginsEnabledKey()));
1868     settings->setJavaEnabled(store.getBoolValueForKey(WebPreferencesKey::javaEnabledKey()));
1869     settings->setOfflineWebApplicationCacheEnabled(store.getBoolValueForKey(WebPreferencesKey::offlineWebApplicationCacheEnabledKey()));
1870     settings->setLocalStorageEnabled(store.getBoolValueForKey(WebPreferencesKey::localStorageEnabledKey()));
1871     settings->setXSSAuditorEnabled(store.getBoolValueForKey(WebPreferencesKey::xssAuditorEnabledKey()));
1872     settings->setFrameFlatteningEnabled(store.getBoolValueForKey(WebPreferencesKey::frameFlatteningEnabledKey()));
1873     settings->setPrivateBrowsingEnabled(store.getBoolValueForKey(WebPreferencesKey::privateBrowsingEnabledKey()));
1874     settings->setDeveloperExtrasEnabled(store.getBoolValueForKey(WebPreferencesKey::developerExtrasEnabledKey()));
1875     settings->setTextAreasAreResizable(store.getBoolValueForKey(WebPreferencesKey::textAreasAreResizableKey()));
1876     settings->setNeedsSiteSpecificQuirks(store.getBoolValueForKey(WebPreferencesKey::needsSiteSpecificQuirksKey()));
1877     settings->setJavaScriptCanOpenWindowsAutomatically(store.getBoolValueForKey(WebPreferencesKey::javaScriptCanOpenWindowsAutomaticallyKey()));
1878     settings->setForceFTPDirectoryListings(store.getBoolValueForKey(WebPreferencesKey::forceFTPDirectoryListingsKey()));
1879     settings->setDNSPrefetchingEnabled(store.getBoolValueForKey(WebPreferencesKey::dnsPrefetchingEnabledKey()));
1880 #if ENABLE(WEB_ARCHIVE)
1881     settings->setWebArchiveDebugModeEnabled(store.getBoolValueForKey(WebPreferencesKey::webArchiveDebugModeEnabledKey()));
1882 #endif
1883     settings->setLocalFileContentSniffingEnabled(store.getBoolValueForKey(WebPreferencesKey::localFileContentSniffingEnabledKey()));
1884     settings->setUsesPageCache(store.getBoolValueForKey(WebPreferencesKey::usesPageCacheKey()));
1885     settings->setPageCacheSupportsPlugins(store.getBoolValueForKey(WebPreferencesKey::pageCacheSupportsPluginsKey()));
1886     settings->setAuthorAndUserStylesEnabled(store.getBoolValueForKey(WebPreferencesKey::authorAndUserStylesEnabledKey()));
1887     settings->setPaginateDuringLayoutEnabled(store.getBoolValueForKey(WebPreferencesKey::paginateDuringLayoutEnabledKey()));
1888     settings->setDOMPasteAllowed(store.getBoolValueForKey(WebPreferencesKey::domPasteAllowedKey()));
1889     settings->setJavaScriptCanAccessClipboard(store.getBoolValueForKey(WebPreferencesKey::javaScriptCanAccessClipboardKey()));
1890     settings->setShouldPrintBackgrounds(store.getBoolValueForKey(WebPreferencesKey::shouldPrintBackgroundsKey()));
1891     settings->setWebSecurityEnabled(store.getBoolValueForKey(WebPreferencesKey::webSecurityEnabledKey()));
1892     settings->setAllowUniversalAccessFromFileURLs(store.getBoolValueForKey(WebPreferencesKey::allowUniversalAccessFromFileURLsKey()));
1893     settings->setAllowFileAccessFromFileURLs(store.getBoolValueForKey(WebPreferencesKey::allowFileAccessFromFileURLsKey()));
1894
1895     settings->setMinimumFontSize(store.getUInt32ValueForKey(WebPreferencesKey::minimumFontSizeKey()));
1896     settings->setMinimumLogicalFontSize(store.getUInt32ValueForKey(WebPreferencesKey::minimumLogicalFontSizeKey()));
1897     settings->setDefaultFontSize(store.getUInt32ValueForKey(WebPreferencesKey::defaultFontSizeKey()));
1898     settings->setDefaultFixedFontSize(store.getUInt32ValueForKey(WebPreferencesKey::defaultFixedFontSizeKey()));
1899     settings->setLayoutFallbackWidth(store.getUInt32ValueForKey(WebPreferencesKey::layoutFallbackWidthKey()));
1900     settings->setDeviceDPI(store.getUInt32ValueForKey(WebPreferencesKey::deviceDPIKey()));
1901     settings->setDeviceWidth(store.getUInt32ValueForKey(WebPreferencesKey::deviceWidthKey()));
1902     settings->setDeviceHeight(store.getUInt32ValueForKey(WebPreferencesKey::deviceHeightKey()));
1903     settings->setEditableLinkBehavior(static_cast<WebCore::EditableLinkBehavior>(store.getUInt32ValueForKey(WebPreferencesKey::editableLinkBehaviorKey())));
1904     settings->setShowsToolTipOverTruncatedText(store.getBoolValueForKey(WebPreferencesKey::showsToolTipOverTruncatedTextKey()));
1905
1906     settings->setAcceleratedCompositingEnabled(store.getBoolValueForKey(WebPreferencesKey::acceleratedCompositingEnabledKey()) && LayerTreeHost::supportsAcceleratedCompositing());
1907     settings->setAcceleratedDrawingEnabled(store.getBoolValueForKey(WebPreferencesKey::acceleratedDrawingEnabledKey()) && LayerTreeHost::supportsAcceleratedCompositing());
1908     settings->setCanvasUsesAcceleratedDrawing(store.getBoolValueForKey(WebPreferencesKey::canvasUsesAcceleratedDrawingKey()) && LayerTreeHost::supportsAcceleratedCompositing());
1909     settings->setShowDebugBorders(store.getBoolValueForKey(WebPreferencesKey::compositingBordersVisibleKey()));
1910     settings->setShowRepaintCounter(store.getBoolValueForKey(WebPreferencesKey::compositingRepaintCountersVisibleKey()));
1911     settings->setCSSCustomFilterEnabled(store.getBoolValueForKey(WebPreferencesKey::cssCustomFilterEnabledKey()));
1912     settings->setCSSRegionsEnabled(store.getBoolValueForKey(WebPreferencesKey::cssRegionsEnabledKey()));
1913     settings->setRegionBasedColumnsEnabled(store.getBoolValueForKey(WebPreferencesKey::regionBasedColumnsEnabledKey()));
1914     settings->setWebGLEnabled(store.getBoolValueForKey(WebPreferencesKey::webGLEnabledKey()));
1915     settings->setMediaPlaybackRequiresUserGesture(store.getBoolValueForKey(WebPreferencesKey::mediaPlaybackRequiresUserGestureKey()));
1916     settings->setMediaPlaybackAllowsInline(store.getBoolValueForKey(WebPreferencesKey::mediaPlaybackAllowsInlineKey()));
1917     settings->setMockScrollbarsEnabled(store.getBoolValueForKey(WebPreferencesKey::mockScrollbarsEnabledKey()));
1918     settings->setHyperlinkAuditingEnabled(store.getBoolValueForKey(WebPreferencesKey::hyperlinkAuditingEnabledKey()));
1919
1920     // <rdar://problem/10697417>: It is necessary to force compositing when accelerate drawing
1921     // is enabled on Mac so that scrollbars are always in their own layers.
1922 #if PLATFORM(MAC)
1923     if (settings->acceleratedDrawingEnabled())
1924         settings->setForceCompositingMode(LayerTreeHost::supportsAcceleratedCompositing());
1925     else
1926 #endif
1927         settings->setForceCompositingMode(store.getBoolValueForKey(WebPreferencesKey::forceCompositingModeKey()) && LayerTreeHost::supportsAcceleratedCompositing());
1928
1929 #if ENABLE(SQL_DATABASE)
1930     AbstractDatabase::setIsAvailable(store.getBoolValueForKey(WebPreferencesKey::databasesEnabledKey()));
1931 #endif
1932
1933 #if ENABLE(FULLSCREEN_API)
1934     settings->setFullScreenEnabled(store.getBoolValueForKey(WebPreferencesKey::fullScreenEnabledKey()));
1935 #endif
1936
1937     settings->setLocalStorageDatabasePath(WebProcess::shared().localStorageDirectory());
1938
1939 #if USE(AVFOUNDATION)
1940     settings->setAVFoundationEnabled(store.getBoolValueForKey(WebPreferencesKey::isAVFoundationEnabledKey()));
1941 #endif
1942
1943 #if ENABLE(WEB_SOCKETS)
1944     settings->setUseHixie76WebSocketProtocol(store.getBoolValueForKey(WebPreferencesKey::hixie76WebSocketProtocolEnabledKey()));
1945 #endif
1946
1947 #if ENABLE(WEB_AUDIO)
1948     settings->setWebAudioEnabled(store.getBoolValueForKey(WebPreferencesKey::webAudioEnabledKey()));
1949 #endif
1950
1951     settings->setApplicationChromeMode(store.getBoolValueForKey(WebPreferencesKey::applicationChromeModeKey()));    
1952     settings->setSuppressesIncrementalRendering(store.getBoolValueForKey(WebPreferencesKey::suppressesIncrementalRenderingKey()));
1953     settings->setBackspaceKeyNavigationEnabled(store.getBoolValueForKey(WebPreferencesKey::backspaceKeyNavigationEnabledKey()));
1954     settings->setCaretBrowsingEnabled(store.getBoolValueForKey(WebPreferencesKey::caretBrowsingEnabledKey()));
1955
1956 #if ENABLE(VIDEO_TRACK)
1957     settings->setShouldDisplaySubtitles(store.getBoolValueForKey(WebPreferencesKey::shouldDisplaySubtitlesKey()));
1958     settings->setShouldDisplayCaptions(store.getBoolValueForKey(WebPreferencesKey::shouldDisplayCaptionsKey()));
1959     settings->setShouldDisplayTextDescriptions(store.getBoolValueForKey(WebPreferencesKey::shouldDisplayTextDescriptionsKey()));
1960 #endif
1961
1962 #if ENABLE(NOTIFICATIONS) || ENABLE(LEGACY_NOTIFICATIONS)
1963     settings->setNotificationsEnabled(store.getBoolValueForKey(WebPreferencesKey::notificationsEnabledKey()));
1964 #endif
1965
1966     platformPreferencesDidChange(store);
1967 }
1968
1969 #if ENABLE(INSPECTOR)
1970 WebInspector* WebPage::inspector()
1971 {
1972     if (m_isClosed)
1973         return 0;
1974     if (!m_inspector)
1975         m_inspector = WebInspector::create(this);
1976     return m_inspector.get();
1977 }
1978 #endif
1979
1980 #if ENABLE(FULLSCREEN_API)
1981 WebFullScreenManager* WebPage::fullScreenManager()
1982 {
1983     if (!m_fullScreenManager)
1984         m_fullScreenManager = WebFullScreenManager::create(this);
1985     return m_fullScreenManager.get();
1986 }
1987 #endif
1988
1989 NotificationPermissionRequestManager* WebPage::notificationPermissionRequestManager()
1990 {
1991     if (m_notificationPermissionRequestManager)
1992         return m_notificationPermissionRequestManager.get();
1993
1994     m_notificationPermissionRequestManager = NotificationPermissionRequestManager::create(this);
1995     return m_notificationPermissionRequestManager.get();
1996 }
1997
1998 #if !PLATFORM(GTK) && !PLATFORM(MAC)
1999 bool WebPage::handleEditingKeyboardEvent(KeyboardEvent* evt)
2000 {
2001     Node* node = evt->target()->toNode();
2002     ASSERT(node);
2003     Frame* frame = node->document()->frame();
2004     ASSERT(frame);
2005
2006     const PlatformKeyboardEvent* keyEvent = evt->keyEvent();
2007     if (!keyEvent)
2008         return false;
2009
2010     Editor::Command command = frame->editor()->command(interpretKeyEvent(evt));
2011
2012     if (keyEvent->type() == PlatformEvent::RawKeyDown) {
2013         // WebKit doesn't have enough information about mode to decide how commands that just insert text if executed via Editor should be treated,
2014         // so we leave it upon WebCore to either handle them immediately (e.g. Tab that changes focus) or let a keypress event be generated
2015         // (e.g. Tab that inserts a Tab character, or Enter).
2016         return !command.isTextInsertion() && command.execute(evt);
2017     }
2018
2019     if (command.execute(evt))
2020         return true;
2021
2022     // Don't insert null or control characters as they can result in unexpected behaviour
2023     if (evt->charCode() < ' ')
2024         return false;
2025
2026     return frame->editor()->insertText(evt->keyEvent()->text(), evt);
2027 }
2028 #endif
2029
2030 #if PLATFORM(WIN)
2031 void WebPage::performDragControllerAction(uint64_t action, WebCore::IntPoint clientPosition, WebCore::IntPoint globalPosition, uint64_t draggingSourceOperationMask, const WebCore::DragDataMap& dataMap, uint32_t flags)
2032 {
2033     if (!m_page) {
2034         send(Messages::WebPageProxy::DidPerformDragControllerAction(WebCore::DragSession()));
2035         return;
2036     }
2037
2038     DragData dragData(dataMap, clientPosition, globalPosition, static_cast<DragOperation>(draggingSourceOperationMask), static_cast<DragApplicationFlags>(flags));
2039     switch (action) {
2040     case DragControllerActionEntered:
2041         send(Messages::WebPageProxy::DidPerformDragControllerAction(m_page->dragController()->dragEntered(&dragData)));
2042         break;
2043
2044     case DragControllerActionUpdated:
2045         send(Messages::WebPageProxy::DidPerformDragControllerAction(m_page->dragController()->dragUpdated(&dragData)));
2046         break;
2047         
2048     case DragControllerActionExited:
2049         m_page->dragController()->dragExited(&dragData);
2050         break;
2051         
2052     case DragControllerActionPerformDrag:
2053         m_page->dragController()->performDrag(&dragData);
2054         break;
2055         
2056     default:
2057         ASSERT_NOT_REACHED();
2058     }
2059 }
2060
2061 #elif PLATFORM(QT) || PLATFORM(GTK)
2062 void WebPage::performDragControllerAction(uint64_t action, WebCore::DragData dragData)
2063 {
2064     if (!m_page) {
2065         send(Messages::WebPageProxy::DidPerformDragControllerAction(WebCore::DragSession()));
2066 #if PLATFORM(QT)
2067         QMimeData* data = const_cast<QMimeData*>(dragData.platformData());
2068 #elif PLATFORM(GTK)
2069         DataObjectGtk* data = const_cast<DataObjectGtk*>(dragData.platformData());
2070 #endif
2071         delete data;
2072         return;
2073     }
2074
2075     switch (action) {
2076     case DragControllerActionEntered:
2077         send(Messages::WebPageProxy::DidPerformDragControllerAction(m_page->dragController()->dragEntered(&dragData)));
2078         break;
2079
2080     case DragControllerActionUpdated:
2081         send(Messages::WebPageProxy::DidPerformDragControllerAction(m_page->dragController()->dragUpdated(&dragData)));
2082         break;
2083
2084     case DragControllerActionExited:
2085         m_page->dragController()->dragExited(&dragData);
2086         break;
2087
2088     case DragControllerActionPerformDrag: {
2089         m_page->dragController()->performDrag(&dragData);
2090         break;
2091     }
2092
2093     default:
2094         ASSERT_NOT_REACHED();
2095     }
2096     // DragData does not delete its platformData so we need to do that here.
2097 #if PLATFORM(QT)
2098     QMimeData* data = const_cast<QMimeData*>(dragData.platformData());
2099 #elif PLATFORM(GTK)
2100     DataObjectGtk* data = const_cast<DataObjectGtk*>(dragData.platformData());
2101 #endif
2102     delete data;
2103 }
2104
2105 #else
2106 void WebPage::performDragControllerAction(uint64_t action, WebCore::IntPoint clientPosition, WebCore::IntPoint globalPosition, uint64_t draggingSourceOperationMask, const String& dragStorageName, uint32_t flags, const SandboxExtension::Handle& sandboxExtensionHandle, const SandboxExtension::HandleArray& sandboxExtensionsHandleArray)
2107 {
2108     if (!m_page) {
2109         send(Messages::WebPageProxy::DidPerformDragControllerAction(WebCore::DragSession()));
2110         return;
2111     }
2112
2113     DragData dragData(dragStorageName, clientPosition, globalPosition, static_cast<DragOperation>(draggingSourceOperationMask), static_cast<DragApplicationFlags>(flags));
2114     switch (action) {
2115     case DragControllerActionEntered:
2116         send(Messages::WebPageProxy::DidPerformDragControllerAction(m_page->dragController()->dragEntered(&dragData)));
2117         break;
2118
2119     case DragControllerActionUpdated:
2120         send(Messages::WebPageProxy::DidPerformDragControllerAction(m_page->dragController()->dragUpdated(&dragData)));
2121         break;
2122         
2123     case DragControllerActionExited:
2124         m_page->dragController()->dragExited(&dragData);
2125         break;
2126         
2127     case DragControllerActionPerformDrag: {
2128         ASSERT(!m_pendingDropSandboxExtension);
2129
2130         m_pendingDropSandboxExtension = SandboxExtension::create(sandboxExtensionHandle);
2131         for (size_t i = 0; i < sandboxExtensionsHandleArray.size(); i++)
2132             m_pendingDropExtensionsForFileUpload.append(SandboxExtension::create(sandboxExtensionsHandleArray[i]));
2133
2134         m_page->dragController()->performDrag(&dragData);
2135
2136         // If we started loading a local file, the sandbox extension tracker would have adopted this
2137         // pending drop sandbox extension. If not, we'll play it safe and invalidate it.
2138         if (m_pendingDropSandboxExtension) {
2139             m_pendingDropSandboxExtension->invalidate();
2140             m_pendingDropSandboxExtension = nullptr;
2141         }
2142         for (size_t i = 0; i < m_pendingDropExtensionsForFileUpload.size(); i++)
2143             m_pendingDropExtensionsForFileUpload[i]->invalidate();
2144
2145         m_pendingDropExtensionsForFileUpload.clear();
2146         break;
2147     }
2148
2149     default:
2150         ASSERT_NOT_REACHED();
2151     }
2152 }
2153 #endif
2154
2155 void WebPage::dragEnded(WebCore::IntPoint clientPosition, WebCore::IntPoint globalPosition, uint64_t operation)
2156 {
2157     IntPoint adjustedClientPosition(clientPosition.x() + m_page->dragController()->dragOffset().x(), clientPosition.y() + m_page->dragController()->dragOffset().y());
2158     IntPoint adjustedGlobalPosition(globalPosition.x() + m_page->dragController()->dragOffset().x(), globalPosition.y() + m_page->dragController()->dragOffset().y());
2159
2160     m_page->dragController()->dragEnded();
2161     FrameView* view = m_page->mainFrame()->view();
2162     if (!view)
2163         return;
2164     // FIXME: These are fake modifier keys here, but they should be real ones instead.
2165     PlatformMouseEvent event(adjustedClientPosition, adjustedGlobalPosition, LeftButton, PlatformEvent::MouseMoved, 0, false, false, false, false, currentTime());
2166     m_page->mainFrame()->eventHandler()->dragSourceEndedAt(event, (DragOperation)operation);
2167 }
2168
2169 void WebPage::willPerformLoadDragDestinationAction()
2170 {
2171     m_sandboxExtensionTracker.willPerformLoadDragDestinationAction(m_pendingDropSandboxExtension.release());
2172 }
2173
2174 void WebPage::performUploadDragDestinationAction()
2175 {
2176     for (size_t i = 0; i < m_pendingDropExtensionsForFileUpload.size(); i++)
2177         m_pendingDropExtensionsForFileUpload[i]->consumePermanently();
2178     m_pendingDropExtensionsForFileUpload.clear();
2179 }
2180
2181 WebUndoStep* WebPage::webUndoStep(uint64_t stepID)
2182 {
2183     return m_undoStepMap.get(stepID).get();
2184 }
2185
2186 void WebPage::addWebUndoStep(uint64_t stepID, WebUndoStep* entry)
2187 {
2188     m_undoStepMap.set(stepID, entry);
2189 }
2190
2191 void WebPage::removeWebEditCommand(uint64_t stepID)
2192 {
2193     m_undoStepMap.remove(stepID);
2194 }
2195
2196 void WebPage::unapplyEditCommand(uint64_t stepID)
2197 {
2198     WebUndoStep* step = webUndoStep(stepID);
2199     if (!step)
2200         return;
2201
2202     step->step()->unapply();
2203 }
2204
2205 void WebPage::reapplyEditCommand(uint64_t stepID)
2206 {
2207     WebUndoStep* step = webUndoStep(stepID);
2208     if (!step)
2209         return;
2210
2211     m_isInRedo = true;
2212     step->step()->reapply();
2213     m_isInRedo = false;
2214 }
2215
2216 void WebPage::didRemoveEditCommand(uint64_t commandID)
2217 {
2218     removeWebEditCommand(commandID);
2219 }
2220
2221 void WebPage::setActivePopupMenu(WebPopupMenu* menu)
2222 {
2223     m_activePopupMenu = menu;
2224 }
2225
2226 void WebPage::setActiveOpenPanelResultListener(PassRefPtr<WebOpenPanelResultListener> openPanelResultListener)
2227 {
2228     m_activeOpenPanelResultListener = openPanelResultListener;
2229 }
2230
2231 bool WebPage::findStringFromInjectedBundle(const String& target, FindOptions options)
2232 {
2233     return m_page->findString(target, options);
2234 }
2235
2236 void WebPage::findString(const String& string, uint32_t options, uint32_t maxMatchCount)
2237 {
2238     m_findController.findString(string, static_cast<FindOptions>(options), maxMatchCount);
2239 }
2240
2241 void WebPage::hideFindUI()
2242 {
2243     m_findController.hideFindUI();
2244 }
2245
2246 void WebPage::countStringMatches(const String& string, uint32_t options, uint32_t maxMatchCount)
2247 {
2248     m_findController.countStringMatches(string, static_cast<FindOptions>(options), maxMatchCount);
2249 }
2250
2251 void WebPage::didChangeSelectedIndexForActivePopupMenu(int32_t newIndex)
2252 {
2253     if (!m_activePopupMenu)
2254         return;
2255
2256     m_activePopupMenu->didChangeSelectedIndex(newIndex);
2257     m_activePopupMenu = 0;
2258 }
2259
2260 void WebPage::didChooseFilesForOpenPanel(const Vector<String>& files)
2261 {
2262     if (!m_activeOpenPanelResultListener)
2263         return;
2264
2265     m_activeOpenPanelResultListener->didChooseFiles(files);
2266     m_activeOpenPanelResultListener = 0;
2267 }
2268
2269 void WebPage::didCancelForOpenPanel()
2270 {
2271     m_activeOpenPanelResultListener = 0;
2272 }
2273
2274 #if ENABLE(WEB_PROCESS_SANDBOX)
2275 void WebPage::extendSandboxForFileFromOpenPanel(const SandboxExtension::Handle& handle)
2276 {
2277     SandboxExtension::create(handle)->consumePermanently();
2278 }
2279 #endif
2280
2281 #if ENABLE(GEOLOCATION)
2282 void WebPage::didReceiveGeolocationPermissionDecision(uint64_t geolocationID, bool allowed)
2283 {
2284     m_geolocationPermissionRequestManager.didReceiveGeolocationPermissionDecision(geolocationID, allowed);
2285 }
2286 #endif
2287
2288 void WebPage::didReceiveNotificationPermissionDecision(uint64_t notificationID, bool allowed)
2289 {
2290     notificationPermissionRequestManager()->didReceiveNotificationPermissionDecision(notificationID, allowed);
2291 }
2292
2293 void WebPage::advanceToNextMisspelling(bool startBeforeSelection)
2294 {
2295     Frame* frame = m_page->focusController()->focusedOrMainFrame();
2296     frame->editor()->advanceToNextMisspelling(startBeforeSelection);
2297 }
2298
2299 void WebPage::changeSpellingToWord(const String& word)
2300 {
2301     replaceSelectionWithText(m_page->focusController()->focusedOrMainFrame(), word);
2302 }
2303
2304 void WebPage::unmarkAllMisspellings()
2305 {
2306     for (Frame* frame = m_page->mainFrame(); frame; frame = frame->tree()->traverseNext()) {
2307         if (Document* document = frame->document())
2308             document->markers()->removeMarkers(DocumentMarker::Spelling);
2309     }
2310 }
2311
2312 void WebPage::unmarkAllBadGrammar()
2313 {
2314     for (Frame* frame = m_page->mainFrame(); frame; frame = frame->tree()->traverseNext()) {
2315         if (Document* document = frame->document())
2316             document->markers()->removeMarkers(DocumentMarker::Grammar);
2317     }
2318 }
2319
2320 #if PLATFORM(MAC)
2321 void WebPage::uppercaseWord()
2322 {
2323     m_page->focusController()->focusedOrMainFrame()->editor()->uppercaseWord();
2324 }
2325
2326 void WebPage::lowercaseWord()
2327 {
2328     m_page->focusController()->focusedOrMainFrame()->editor()->lowercaseWord();
2329 }
2330
2331 void WebPage::capitalizeWord()
2332 {
2333     m_page->focusController()->focusedOrMainFrame()->editor()->capitalizeWord();
2334 }
2335 #endif
2336     
2337 void WebPage::setTextForActivePopupMenu(int32_t index)
2338 {
2339     if (!m_activePopupMenu)
2340         return;
2341
2342     m_activePopupMenu->setTextForIndex(index);
2343 }
2344
2345 #if PLATFORM(GTK)
2346 void WebPage::failedToShowPopupMenu()
2347 {
2348     if (!m_activePopupMenu)
2349         return;
2350
2351     m_activePopupMenu->client()->popupDidHide();
2352 }
2353 #endif
2354
2355 void WebPage::didSelectItemFromActiveContextMenu(const WebContextMenuItemData& item)
2356 {
2357     if (!m_contextMenu)
2358         return;
2359
2360     m_contextMenu->itemSelected(item);
2361     m_contextMenu = 0;
2362 }
2363
2364 void WebPage::replaceSelectionWithText(Frame* frame, const String& text)
2365 {
2366     bool selectReplacement = true;
2367     bool smartReplace = false;
2368     return frame->editor()->replaceSelectionWithText(text, selectReplacement, smartReplace);
2369 }
2370
2371 void WebPage::clearSelection()
2372 {
2373     m_page->focusController()->focusedOrMainFrame()->selection()->clear();
2374 }
2375
2376 bool WebPage::mainFrameHasCustomRepresentation() const
2377 {
2378     if (Frame* frame = mainFrame())
2379         return static_cast<WebFrameLoaderClient*>(frame->loader()->client())->frameHasCustomRepresentation();
2380
2381     return false;
2382 }
2383
2384 void WebPage::didChangeScrollOffsetForMainFrame()
2385 {
2386     Frame* frame = m_page->mainFrame();
2387     IntPoint scrollPosition = frame->view()->scrollPosition();
2388     IntPoint maximumScrollPosition = frame->view()->maximumScrollPosition();
2389     IntPoint minimumScrollPosition = frame->view()->minimumScrollPosition();
2390
2391     bool isPinnedToLeftSide = (scrollPosition.x() <= minimumScrollPosition.x());
2392     bool isPinnedToRightSide = (scrollPosition.x() >= maximumScrollPosition.x());
2393
2394     if (isPinnedToLeftSide != m_cachedMainFrameIsPinnedToLeftSide || isPinnedToRightSide != m_cachedMainFrameIsPinnedToRightSide) {
2395         send(Messages::WebPageProxy::DidChangeScrollOffsetPinningForMainFrame(isPinnedToLeftSide, isPinnedToRightSide));
2396         
2397         m_cachedMainFrameIsPinnedToLeftSide = isPinnedToLeftSide;
2398         m_cachedMainFrameIsPinnedToRightSide = isPinnedToRightSide;
2399     }
2400 }
2401
2402 void WebPage::mainFrameDidLayout()
2403 {
2404     unsigned pageCount = m_page->pageCount();
2405     if (pageCount != m_cachedPageCount) {
2406         send(Messages::WebPageProxy::DidChangePageCount(pageCount));
2407         m_cachedPageCount = pageCount;
2408     }
2409 }
2410
2411 #if PLATFORM(MAC)
2412
2413 void WebPage::addPluginView(PluginView* pluginView)
2414 {
2415     ASSERT(!m_pluginViews.contains(pluginView));
2416
2417     m_pluginViews.add(pluginView);
2418 }
2419
2420 void WebPage::removePluginView(PluginView* pluginView)
2421 {
2422     ASSERT(m_pluginViews.contains(pluginView));
2423
2424     m_pluginViews.remove(pluginView);
2425 }
2426
2427 void WebPage::setWindowIsVisible(bool windowIsVisible)
2428 {
2429     m_windowIsVisible = windowIsVisible;
2430
2431     corePage()->focusController()->setContainingWindowIsVisible(windowIsVisible);
2432
2433     // Tell all our plug-in views that the window visibility changed.
2434     for (HashSet<PluginView*>::const_iterator it = m_pluginViews.begin(), end = m_pluginViews.end(); it != end; ++it)
2435         (*it)->setWindowIsVisible(windowIsVisible);
2436 }
2437
2438 void WebPage::windowAndViewFramesChanged(const WebCore::IntRect& windowFrameInScreenCoordinates, const WebCore::IntRect& viewFrameInWindowCoordinates, const WebCore::IntPoint& accessibilityViewCoordinates)
2439 {
2440     m_windowFrameInScreenCoordinates = windowFrameInScreenCoordinates;
2441     m_viewFrameInWindowCoordinates = viewFrameInWindowCoordinates;
2442     m_accessibilityPosition = accessibilityViewCoordinates;
2443     
2444     // Tell all our plug-in views that the window and view frames have changed.
2445     for (HashSet<PluginView*>::const_iterator it = m_pluginViews.begin(), end = m_pluginViews.end(); it != end; ++it)
2446         (*it)->windowAndViewFramesChanged(windowFrameInScreenCoordinates, viewFrameInWindowCoordinates);
2447 }
2448
2449 #endif
2450
2451 bool WebPage::windowIsFocused() const
2452 {
2453 #if PLATFORM(MAC)
2454     if (!m_windowIsVisible)
2455         return false;
2456 #endif
2457     return m_page->focusController()->isFocused() && m_page->focusController()->isActive();
2458 }    
2459
2460 void WebPage::didReceiveMessage(CoreIPC::Connection* connection, CoreIPC::MessageID messageID, CoreIPC::ArgumentDecoder* arguments)
2461 {
2462     if (messageID.is<CoreIPC::MessageClassDrawingArea>()) {
2463         if (m_drawingArea)
2464             m_drawingArea->didReceiveDrawingAreaMessage(connection, messageID, arguments);
2465         return;
2466     }
2467
2468 #if USE(TILED_BACKING_STORE) && USE(ACCELERATED_COMPOSITING)
2469     if (messageID.is<CoreIPC::MessageClassLayerTreeHost>()) {
2470         if (m_drawingArea)
2471             m_drawingArea->didReceiveLayerTreeHostMessage(connection, messageID, arguments);
2472         return;
2473     }
2474 #endif
2475     
2476 #if ENABLE(INSPECTOR)
2477     if (messageID.is<CoreIPC::MessageClassWebInspector>()) {
2478         if (WebInspector* inspector = this->inspector())
2479             inspector->didReceiveWebInspectorMessage(connection, messageID, arguments);
2480         return;
2481     }
2482 #endif
2483
2484 #if ENABLE(FULLSCREEN_API)
2485     if (messageID.is<CoreIPC::MessageClassWebFullScreenManager>()) {
2486         fullScreenManager()->didReceiveMessage(connection, messageID, arguments);
2487         return;
2488     }
2489 #endif
2490
2491     didReceiveWebPageMessage(connection, messageID, arguments);
2492 }
2493
2494 void WebPage::didReceiveSyncMessage(CoreIPC::Connection* connection, CoreIPC::MessageID messageID, CoreIPC::ArgumentDecoder* arguments, OwnPtr<CoreIPC::ArgumentEncoder>& reply)
2495 {   
2496     didReceiveSyncWebPageMessage(connection, messageID, arguments, reply);
2497 }
2498     
2499 InjectedBundleBackForwardList* WebPage::backForwardList()
2500 {
2501     if (!m_backForwardList)
2502         m_backForwardList = InjectedBundleBackForwardList::create(this);
2503     return m_backForwardList.get();
2504 }
2505
2506 #if PLATFORM(QT)
2507 void WebPage::findZoomableAreaForPoint(const WebCore::IntPoint& point)
2508 {
2509     Frame* mainframe = m_mainFrame->coreFrame();
2510     HitTestResult result = mainframe->eventHandler()->hitTestResultAtPoint(mainframe->view()->windowToContents(point), /*allowShadowContent*/ false, /*ignoreClipping*/ true);
2511
2512     Node* node = result.innerNode();
2513
2514     if (!node)
2515         return;
2516
2517     IntRect zoomableArea = node->getRect();
2518
2519     while (true) {
2520         bool found = !node->isTextNode() && !node->isShadowRoot();
2521
2522         // No candidate found, bail out.
2523         if (!found && !node->parentNode())
2524             return;
2525
2526         // Candidate found, and it is a better candidate than its parent.
2527         // NB: A parent is considered a better candidate iff the node is
2528         // contained by it and it is the only child.
2529         if (found && (!node->parentNode() || node->parentNode()->childNodeCount() != 1))
2530             break;
2531
2532         node = node->parentNode();
2533         zoomableArea.unite(node->getRect());
2534     }
2535
2536     if (node->document() && node->document()->frame() && node->document()->frame()->view()) {
2537         const ScrollView* view = node->document()->frame()->view();
2538         zoomableArea = view->contentsToWindow(zoomableArea);
2539     }
2540
2541     send(Messages::WebPageProxy::DidFindZoomableArea(point, zoomableArea));
2542 }
2543 #endif
2544
2545 WebPage::SandboxExtensionTracker::~SandboxExtensionTracker()
2546 {
2547     invalidate();
2548 }
2549
2550 void WebPage::SandboxExtensionTracker::invalidate()
2551 {
2552     if (m_pendingProvisionalSandboxExtension) {
2553         m_pendingProvisionalSandboxExtension->invalidate();
2554         m_pendingProvisionalSandboxExtension = 0;
2555     }
2556
2557     if (m_provisionalSandboxExtension) {
2558         m_provisionalSandboxExtension->invalidate();
2559         m_provisionalSandboxExtension = 0;
2560     }
2561
2562     if (m_committedSandboxExtension) {
2563         m_committedSandboxExtension->invalidate();
2564         m_committedSandboxExtension = 0;
2565     }
2566 }
2567
2568 void WebPage::SandboxExtensionTracker::willPerformLoadDragDestinationAction(PassRefPtr<SandboxExtension> pendingDropSandboxExtension)
2569 {
2570     setPendingProvisionalSandboxExtension(pendingDropSandboxExtension);
2571 }
2572
2573 void WebPage::SandboxExtensionTracker::beginLoad(WebFrame* frame, const SandboxExtension::Handle& handle)
2574 {
2575     ASSERT(frame->isMainFrame());
2576
2577     setPendingProvisionalSandboxExtension(SandboxExtension::create(handle));
2578 }
2579
2580 void WebPage::SandboxExtensionTracker::setPendingProvisionalSandboxExtension(PassRefPtr<SandboxExtension> pendingProvisionalSandboxExtension)
2581 {
2582     // If we get two beginLoad calls in succession, without a provisional load starting, then
2583     // m_pendingProvisionalSandboxExtension will be non-null. Invalidate and null out the extension if that is the case.
2584     if (m_pendingProvisionalSandboxExtension) {
2585         m_pendingProvisionalSandboxExtension->invalidate();
2586         m_pendingProvisionalSandboxExtension = nullptr;
2587     }
2588     
2589     m_pendingProvisionalSandboxExtension = pendingProvisionalSandboxExtension;    
2590 }
2591
2592 static bool shouldReuseCommittedSandboxExtension(WebFrame* frame)
2593 {
2594     ASSERT(frame->isMainFrame());
2595
2596     FrameLoader* frameLoader = frame->coreFrame()->loader();
2597     FrameLoadType frameLoadType = frameLoader->loadType();
2598
2599     // If the page is being reloaded, it should reuse whatever extension is committed.
2600     if (frameLoadType == FrameLoadTypeReload || frameLoadType == FrameLoadTypeReloadFromOrigin)
2601         return true;
2602
2603     DocumentLoader* documentLoader = frameLoader->documentLoader();
2604     DocumentLoader* provisionalDocumentLoader = frameLoader->provisionalDocumentLoader();
2605     if (!documentLoader || !provisionalDocumentLoader)
2606         return false;
2607
2608     if (documentLoader->url().isLocalFile() && provisionalDocumentLoader->url().isLocalFile())
2609         return true;
2610
2611     return false;
2612 }
2613
2614 void WebPage::SandboxExtensionTracker::didStartProvisionalLoad(WebFrame* frame)
2615 {
2616     if (!frame->isMainFrame())
2617         return;
2618
2619     // We should only reuse the commited sandbox extension if it is not null. It can be
2620     // null if the last load was for an error page.
2621     if (m_committedSandboxExtension && shouldReuseCommittedSandboxExtension(frame)) {
2622         m_pendingProvisionalSandboxExtension = m_committedSandboxExtension.release();
2623         ASSERT(!m_committedSandboxExtension);
2624     }
2625
2626     ASSERT(!m_provisionalSandboxExtension);
2627
2628     m_provisionalSandboxExtension = m_pendingProvisionalSandboxExtension.release();
2629     if (!m_provisionalSandboxExtension)
2630         return;
2631
2632     m_provisionalSandboxExtension->consume();
2633 }
2634
2635 void WebPage::SandboxExtensionTracker::didCommitProvisionalLoad(WebFrame* frame)
2636 {
2637     if (!frame->isMainFrame())
2638         return;
2639
2640     // Generally, there should be no pending extension at this stage, but we can have one if UI process
2641     // has an out of date idea of WebProcess state, and initiates a load or reload without stopping an existing one.
2642     if (m_pendingProvisionalSandboxExtension) {
2643         m_pendingProvisionalSandboxExtension->invalidate();
2644         m_pendingProvisionalSandboxExtension = nullptr;
2645     }
2646
2647     // The provisional load has been committed. Invalidate the currently committed sandbox
2648     // extension and make the provisional sandbox extension the committed sandbox extension.
2649     if (m_committedSandboxExtension)
2650         m_committedSandboxExtension->invalidate();
2651
2652     m_committedSandboxExtension = m_provisionalSandboxExtension.release();
2653 }
2654
2655 void WebPage::SandboxExtensionTracker::didFailProvisionalLoad(WebFrame* frame)
2656 {
2657     if (!frame->isMainFrame())
2658         return;
2659
2660     // Generally, there should be no pending extension at this stage, but we can have one if UI process
2661     // has an out of date idea of WebProcess state, and initiates a load or reload without stopping an existing one.
2662     if (m_pendingProvisionalSandboxExtension) {
2663         m_pendingProvisionalSandboxExtension->invalidate();
2664         m_pendingProvisionalSandboxExtension = nullptr;
2665     }
2666
2667     if (!m_provisionalSandboxExtension)
2668         return;
2669
2670     m_provisionalSandboxExtension->invalidate();
2671     m_provisionalSandboxExtension = nullptr;
2672 }
2673
2674 bool WebPage::hasLocalDataForURL(const KURL& url)
2675 {
2676     if (url.isLocalFile())
2677         return true;
2678
2679     FrameLoader* frameLoader = m_page->mainFrame()->loader();
2680     DocumentLoader* documentLoader = frameLoader ? frameLoader->documentLoader() : 0;
2681     if (documentLoader && documentLoader->subresource(url))
2682         return true;
2683
2684     return platformHasLocalDataForURL(url);
2685 }
2686
2687 void WebPage::setCustomTextEncodingName(const String& encoding)
2688 {
2689     m_page->mainFrame()->loader()->reloadWithOverrideEncoding(encoding);
2690 }
2691
2692 void WebPage::didRemoveBackForwardItem(uint64_t itemID)
2693 {
2694     WebBackForwardListProxy::removeItem(itemID);
2695 }
2696
2697 #if PLATFORM(MAC)
2698
2699 bool WebPage::isSpeaking()
2700 {
2701     bool result;
2702     return sendSync(Messages::WebPageProxy::GetIsSpeaking(), Messages::WebPageProxy::GetIsSpeaking::Reply(result)) && result;
2703 }
2704
2705 void WebPage::speak(const String& string)
2706 {
2707     send(Messages::WebPageProxy::Speak(string));
2708 }
2709
2710 void WebPage::stopSpeaking()
2711 {
2712     send(Messages::WebPageProxy::StopSpeaking());
2713 }
2714
2715 #endif
2716
2717 #if USE(CG)
2718 static RetainPtr<CGPDFDocumentRef> pdfDocumentForPrintingFrame(Frame* coreFrame)
2719 {
2720     Document* document = coreFrame->document();
2721     if (!document)
2722         return 0;
2723
2724     if (!document->isPluginDocument())
2725         return 0;
2726
2727     PluginView* pluginView = static_cast<PluginView*>(toPluginDocument(document)->pluginWidget());
2728     if (!pluginView)
2729         return 0;
2730
2731     return pluginView->pdfDocumentForPrinting();
2732 }
2733 #endif // USE(CG)
2734
2735 void WebPage::beginPrinting(uint64_t frameID, const PrintInfo& printInfo)
2736 {
2737     WebFrame* frame = WebProcess::shared().webFrame(frameID);
2738     if (!frame)
2739         return;
2740
2741     Frame* coreFrame = frame->coreFrame();
2742     if (!coreFrame)
2743         return;
2744
2745 #if USE(CG)
2746     if (pdfDocumentForPrintingFrame(coreFrame))
2747         return;
2748 #endif // USE(CG)
2749
2750     if (!m_printContext)
2751         m_printContext = adoptPtr(new PrintContext(coreFrame));
2752
2753     drawingArea()->setLayerTreeStateIsFrozen(true);
2754     m_printContext->begin(printInfo.availablePaperWidth, printInfo.availablePaperHeight);
2755
2756     float fullPageHeight;
2757     m_printContext->computePageRects(FloatRect(0, 0, printInfo.availablePaperWidth, printInfo.availablePaperHeight), 0, 0, printInfo.pageSetupScaleFactor, fullPageHeight, true);
2758
2759 #if PLATFORM(GTK)
2760     if (!m_printOperation)
2761         m_printOperation = WebPrintOperationGtk::create(this, printInfo);
2762 #endif
2763 }
2764
2765 void WebPage::endPrinting()
2766 {
2767     drawingArea()->setLayerTreeStateIsFrozen(false);
2768 #if PLATFORM(GTK)
2769     m_printOperation = 0;
2770 #endif
2771     m_printContext = nullptr;
2772 }
2773
2774 void WebPage::computePagesForPrinting(uint64_t frameID, const PrintInfo& printInfo, uint64_t callbackID)
2775 {
2776     Vector<IntRect> resultPageRects;
2777     double resultTotalScaleFactorForPrinting = 1;
2778
2779     beginPrinting(frameID, printInfo);
2780
2781     if (m_printContext) {
2782         resultPageRects = m_printContext->pageRects();
2783         resultTotalScaleFactorForPrinting = m_printContext->computeAutomaticScaleFactor(FloatSize(printInfo.availablePaperWidth, printInfo.availablePaperHeight)) * printInfo.pageSetupScaleFactor;
2784     }
2785 #if USE(CG)
2786     else {
2787         WebFrame* frame = WebProcess::shared().webFrame(frameID);
2788         Frame* coreFrame = frame ? frame->coreFrame() : 0;
2789         RetainPtr<CGPDFDocumentRef> pdfDocument = coreFrame ? pdfDocumentForPrintingFrame(coreFrame) : 0;
2790         if (pdfDocument && CGPDFDocumentAllowsPrinting(pdfDocument.get())) {
2791             CFIndex pageCount = CGPDFDocumentGetNumberOfPages(pdfDocument.get());
2792             IntRect pageRect(0, 0, ceilf(printInfo.availablePaperWidth), ceilf(printInfo.availablePaperHeight));
2793             for (CFIndex i = 1; i <= pageCount; ++i) {
2794                 resultPageRects.append(pageRect);
2795                 pageRect.move(0, pageRect.height());
2796             }
2797         }
2798     }
2799 #endif // USE(CG)
2800
2801     // If we're asked to print, we should actually print at least a blank page.
2802     if (resultPageRects.isEmpty())
2803         resultPageRects.append(IntRect(0, 0, 1, 1));
2804
2805     send(Messages::WebPageProxy::ComputedPagesCallback(resultPageRects, resultTotalScaleFactorForPrinting, callbackID));
2806 }
2807
2808 #if USE(CG)
2809 static inline CGFloat roundCGFloat(CGFloat f)
2810 {
2811     if (sizeof(CGFloat) == sizeof(float))
2812         return roundf(static_cast<float>(f));
2813     return static_cast<CGFloat>(round(f));
2814 }
2815
2816 static void drawPDFPage(CGPDFDocumentRef pdfDocument, CFIndex pageIndex, CGContextRef context, CGFloat pageSetupScaleFactor, CGSize paperSize)
2817 {
2818     CGContextSaveGState(context);
2819
2820     CGContextScaleCTM(context, pageSetupScaleFactor, pageSetupScaleFactor);
2821
2822     CGPDFPageRef page = CGPDFDocumentGetPage(pdfDocument, pageIndex + 1);
2823     CGRect cropBox = CGPDFPageGetBoxRect(page, kCGPDFCropBox);
2824     if (CGRectIsEmpty(cropBox))
2825         cropBox = CGRectIntersection(cropBox, CGPDFPageGetBoxRect(page, kCGPDFMediaBox));
2826     else
2827         cropBox = CGPDFPageGetBoxRect(page, kCGPDFMediaBox);
2828
2829     bool shouldRotate = (paperSize.width < paperSize.height) != (cropBox.size.width < cropBox.size.height);
2830     if (shouldRotate)
2831         swap(cropBox.size.width, cropBox.size.height);
2832
2833     // Center.
2834     CGFloat widthDifference = paperSize.width / pageSetupScaleFactor - cropBox.size.width;
2835     CGFloat heightDifference = paperSize.height / pageSetupScaleFactor - cropBox.size.height;
2836     if (widthDifference || heightDifference)
2837         CGContextTranslateCTM(context, roundCGFloat(widthDifference / 2), roundCGFloat(heightDifference / 2));
2838
2839     if (shouldRotate) {
2840         CGContextRotateCTM(context, static_cast<CGFloat>(piOverTwoDouble));
2841         CGContextTranslateCTM(context, 0, -cropBox.size.width);
2842     }
2843
2844     CGContextDrawPDFPage(context, page);
2845
2846     CGContextRestoreGState(context);
2847 }
2848 #endif // USE(CG)
2849
2850 #if PLATFORM(MAC) || PLATFORM(WIN)
2851 void WebPage::drawRectToPDF(uint64_t frameID, const PrintInfo& printInfo, const WebCore::IntRect& rect, uint64_t callbackID)
2852 {
2853     WebFrame* frame = WebProcess::shared().webFrame(frameID);
2854     Frame* coreFrame = frame ? frame->coreFrame() : 0;
2855
2856     RetainPtr<CFMutableDataRef> pdfPageData(AdoptCF, CFDataCreateMutable(0, 0));
2857
2858     if (coreFrame) {
2859 #if !USE(CG)
2860         UNUSED_PARAM(printInfo);
2861
2862         ASSERT(coreFrame->document()->printing());
2863 #else
2864         ASSERT(coreFrame->document()->printing() || pdfDocumentForPrintingFrame(coreFrame));
2865
2866         // FIXME: Use CGDataConsumerCreate with callbacks to avoid copying the data.
2867         RetainPtr<CGDataConsumerRef> pdfDataConsumer(AdoptCF, CGDataConsumerCreateWithCFData(pdfPageData.get()));
2868
2869         CGRect mediaBox = CGRectMake(0, 0, rect.width(), rect.height());
2870         RetainPtr<CGContextRef> context(AdoptCF, CGPDFContextCreate(pdfDataConsumer.get(), &mediaBox, 0));
2871         RetainPtr<CFDictionaryRef> pageInfo(AdoptCF, CFDictionaryCreateMutable(0, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks));
2872         CGPDFContextBeginPage(context.get(), pageInfo.get());
2873
2874         if (RetainPtr<CGPDFDocumentRef> pdfDocument = pdfDocumentForPrintingFrame(coreFrame)) {
2875             CFIndex pageCount = CGPDFDocumentGetNumberOfPages(pdfDocument.get());
2876             IntSize paperSize(ceilf(printInfo.availablePaperWidth), ceilf(printInfo.availablePaperHeight));
2877             IntRect pageRect(IntPoint(), paperSize);
2878             for (CFIndex i = 0; i < pageCount; ++i) {
2879                 if (pageRect.intersects(rect)) {
2880                     CGContextSaveGState(context.get());
2881
2882                     CGContextTranslateCTM(context.get(), pageRect.x() - rect.x(), pageRect.y() - rect.y());
2883                     drawPDFPage(pdfDocument.get(), i, context.get(), printInfo.pageSetupScaleFactor, paperSize);
2884
2885                     CGContextRestoreGState(context.get());
2886                 }
2887                 pageRect.move(0, pageRect.height());
2888             }
2889         } else {
2890             GraphicsContext ctx(context.get());
2891             ctx.scale(FloatSize(1, -1));
2892             ctx.translate(0, -rect.height());
2893             m_printContext->spoolRect(ctx, rect);
2894         }
2895
2896         CGPDFContextEndPage(context.get());
2897         CGPDFContextClose(context.get());
2898 #endif
2899     }
2900
2901     send(Messages::WebPageProxy::DataCallback(CoreIPC::DataReference(CFDataGetBytePtr(pdfPageData.get()), CFDataGetLength(pdfPageData.get())), callbackID));
2902 }
2903
2904 void WebPage::drawPagesToPDF(uint64_t frameID, const PrintInfo& printInfo, uint32_t first, uint32_t count, uint64_t callbackID)
2905 {
2906     WebFrame* frame = WebProcess::shared().webFrame(frameID);
2907     Frame* coreFrame = frame ? frame->coreFrame() : 0;
2908
2909     RetainPtr<CFMutableDataRef> pdfPageData(AdoptCF, CFDataCreateMutable(0, 0));
2910
2911     if (coreFrame) {
2912
2913 #if !USE(CG)
2914         ASSERT(coreFrame->document()->printing());
2915 #else
2916         ASSERT(coreFrame->document()->printing() || pdfDocumentForPrintingFrame(coreFrame));
2917
2918         RetainPtr<CGPDFDocumentRef> pdfDocument = pdfDocumentForPrintingFrame(coreFrame);
2919
2920         // FIXME: Use CGDataConsumerCreate with callbacks to avoid copying the data.
2921         RetainPtr<CGDataConsumerRef> pdfDataConsumer(AdoptCF, CGDataConsumerCreateWithCFData(pdfPageData.get()));
2922
2923         CGRect mediaBox = m_printContext && m_printContext->pageCount() ? m_printContext->pageRect(0) : CGRectMake(0, 0, printInfo.availablePaperWidth, printInfo.availablePaperHeight);
2924         RetainPtr<CGContextRef> context(AdoptCF, CGPDFContextCreate(pdfDataConsumer.get(), &mediaBox, 0));
2925         size_t pageCount = m_printContext ? m_printContext->pageCount() : CGPDFDocumentGetNumberOfPages(pdfDocument.get());
2926         for (uint32_t page = first; page < first + count; ++page) {
2927             if (page >= pageCount)
2928                 break;
2929
2930             RetainPtr<CFDictionaryRef> pageInfo(AdoptCF, CFDictionaryCreateMutable(0, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks));
2931             CGPDFContextBeginPage(context.get(), pageInfo.get());
2932
2933             if (pdfDocument)
2934                 drawPDFPage(pdfDocument.get(), page, context.get(), printInfo.pageSetupScaleFactor, CGSizeMake(printInfo.availablePaperWidth, printInfo.availablePaperHeight));
2935             else {
2936                 GraphicsContext ctx(context.get());
2937                 ctx.scale(FloatSize(1, -1));
2938                 ctx.translate(0, -m_printContext->pageRect(page).height());
2939                 m_printContext->spoolPage(ctx, page, m_printContext->pageRect(page).width());
2940             }
2941
2942             CGPDFContextEndPage(context.get());
2943         }
2944         CGPDFContextClose(context.get());
2945 #endif
2946     }
2947
2948     send(Messages::WebPageProxy::DataCallback(CoreIPC::DataReference(CFDataGetBytePtr(pdfPageData.get()), CFDataGetLength(pdfPageData.get())), callbackID));
2949 }
2950 #elif PLATFORM(GTK)
2951 void WebPage::drawPagesForPrinting(uint64_t frameID, const PrintInfo& printInfo, uint64_t callbackID)
2952 {
2953     beginPrinting(frameID, printInfo);
2954     if (m_printContext && m_printOperation) {
2955         m_printOperation->startPrint(m_printContext.get(), callbackID);
2956         return;
2957     }
2958
2959     send(Messages::WebPageProxy::VoidCallback(callbackID));
2960 }
2961 #endif
2962
2963 void WebPage::setMediaVolume(float volume)
2964 {
2965     m_page->setMediaVolume(volume);
2966 }
2967
2968 void WebPage::runModal()
2969 {
2970     if (m_isClosed)
2971         return;
2972     if (m_isRunningModal)
2973         return;
2974
2975     m_isRunningModal = true;
2976     send(Messages::WebPageProxy::RunModal());
2977     RunLoop::run();
2978     ASSERT(!m_isRunningModal);
2979 }
2980
2981 void WebPage::setMemoryCacheMessagesEnabled(bool memoryCacheMessagesEnabled)
2982 {
2983     m_page->setMemoryCacheClientCallsEnabled(memoryCacheMessagesEnabled);
2984 }
2985
2986 bool WebPage::canHandleRequest(const WebCore::ResourceRequest& request)
2987 {
2988     if (SchemeRegistry::shouldLoadURLSchemeAsEmptyDocument(request.url().protocol()))
2989         return true;
2990     return platformCanHandleRequest(request);
2991 }
2992
2993 #if PLATFORM(MAC) && !defined(BUILDING_ON_SNOW_LEOPARD)
2994 void WebPage::handleCorrectionPanelResult(const String& result)
2995 {
2996     Frame* frame = m_page->focusController()->focusedOrMainFrame();
2997     if (!frame)
2998         return;
2999     frame->editor()->handleCorrectionPanelResult(result);
3000 }
3001 #endif
3002
3003 void WebPage::simulateMouseDown(int button, WebCore::IntPoint position, int clickCount, WKEventModifiers modifiers, double time)
3004 {
3005     mouseEvent(WebMouseEvent(WebMouseEvent::MouseDown, static_cast<WebMouseEvent::Button>(button), position, position, 0, 0, 0, clickCount, static_cast<WebMouseEvent::Modifiers>(modifiers), time));
3006 }
3007
3008 void WebPage::simulateMouseUp(int button, WebCore::IntPoint position, int clickCount, WKEventModifiers modifiers, double time)
3009 {
3010     mouseEvent(WebMouseEvent(WebMouseEvent::MouseUp, static_cast<WebMouseEvent::Button>(button), position, position, 0, 0, 0, clickCount, static_cast<WebMouseEvent::Modifiers>(modifiers), time));
3011 }
3012
3013 void WebPage::simulateMouseMotion(WebCore::IntPoint position, double time)
3014 {
3015     mouseEvent(WebMouseEvent(WebMouseEvent::MouseMove, WebMouseEvent::NoButton, position, position, 0, 0, 0, 0, WebMouseEvent::Modifiers(), time));
3016 }
3017
3018 String WebPage::viewportConfigurationAsText(int deviceDPI, int deviceWidth, int deviceHeight, int availableWidth, int availableHeight)
3019 {
3020     ViewportArguments arguments = mainFrame()->document()->viewportArguments();
3021     ViewportAttributes attrs = WebCore::computeViewportAttributes(arguments, /* default layout width for non-mobile pages */ 980, deviceWidth, deviceHeight, deviceDPI, IntSize(availableWidth, availableHeight));
3022     WebCore::restrictMinimumScaleFactorToViewportSize(attrs, IntSize(availableWidth, availableHeight));
3023     WebCore::restrictScaleFactorToInitialScaleIfNotUserScalable(attrs);
3024     return String::format("viewport size %dx%d scale %f with limits [%f, %f] and userScalable %f\n", attrs.layoutSize.width(), attrs.layoutSize.height(), attrs.initialScale, attrs.minimumScale, attrs.maximumScale, attrs.userScalable);
3025 }
3026
3027 void WebPage::setCompositionForTesting(const String& compositionString, uint64_t from, uint64_t length)
3028 {
3029     Frame* frame = m_page->focusController()->focusedOrMainFrame();
3030     if (!frame || !frame->editor()->canEdit())
3031         return;
3032
3033     Vector<CompositionUnderline> underlines;
3034     underlines.append(CompositionUnderline(0, compositionString.length(), Color(Color::black), false));
3035     frame->editor()->setComposition(compositionString, underlines, from, from + length);
3036 }
3037
3038 bool WebPage::hasCompositionForTesting()
3039 {
3040     Frame* frame = m_page->focusController()->focusedOrMainFrame();
3041     return frame && frame->editor()->hasComposition();
3042 }
3043
3044 void WebPage::confirmCompositionForTesting(const String& compositionString)
3045 {
3046     Frame* frame = m_page->focusController()->focusedOrMainFrame();
3047     if (!frame || !frame->editor()->canEdit())
3048         return;
3049
3050     if (compositionString.isNull())
3051         frame->editor()->confirmComposition();
3052     frame->editor()->confirmComposition(compositionString);
3053 }
3054
3055 void WebPage::numWheelEventHandlersChanged(unsigned numWheelEventHandlers)
3056 {
3057     if (m_numWheelEventHandlers == numWheelEventHandlers)
3058         return;
3059
3060     m_numWheelEventHandlers = numWheelEventHandlers;
3061     recomputeShortCircuitHorizontalWheelEventsState();
3062 }
3063
3064 static bool hasEnabledHorizontalScrollbar(ScrollableArea* scrollableArea)
3065 {
3066     if (Scrollbar* scrollbar = scrollableArea->horizontalScrollbar())
3067         return scrollbar->enabled();
3068
3069     return false;
3070 }
3071
3072 static bool pageContainsAnyHorizontalScrollbars(Frame* mainFrame)
3073 {
3074     if (FrameView* frameView = mainFrame->view()) {
3075         if (hasEnabledHorizontalScrollbar(frameView))
3076             return true;
3077     }
3078
3079     for (Frame* frame = mainFrame; frame; frame = frame->tree()->traverseNext()) {
3080         FrameView* frameView = frame->view();
3081         if (!frameView)
3082             continue;
3083
3084         const HashSet<ScrollableArea*>* scrollableAreas = frameView->scrollableAreas();
3085         if (!scrollableAreas)
3086             continue;
3087
3088         for (HashSet<ScrollableArea*>::const_iterator it = scrollableAreas->begin(), end = scrollableAreas->end(); it != end; ++it) {
3089             ScrollableArea* scrollableArea = *it;
3090             if (!scrollableArea->isOnActivePage())
3091                 continue;
3092
3093             if (hasEnabledHorizontalScrollbar(scrollableArea))
3094                 return true;
3095         }
3096     }
3097
3098     return false;
3099 }
3100
3101 void WebPage::recomputeShortCircuitHorizontalWheelEventsState()
3102 {
3103     bool canShortCircuitHorizontalWheelEvents = !m_numWheelEventHandlers;
3104
3105     if (canShortCircuitHorizontalWheelEvents) {
3106         // Check if we have any horizontal scroll bars on the page.
3107         if (pageContainsAnyHorizontalScrollbars(mainFrame()))
3108             canShortCircuitHorizontalWheelEvents = false;
3109     }
3110
3111     if (m_canShortCircuitHorizontalWheelEvents == canShortCircuitHorizontalWheelEvents)
3112         return;
3113
3114     m_canShortCircuitHorizontalWheelEvents = canShortCircuitHorizontalWheelEvents;
3115     send(Messages::WebPageProxy::SetCanShortCircuitHorizontalWheelEvents(m_canShortCircuitHorizontalWheelEvents));
3116 }
3117
3118 Frame* WebPage::mainFrame() const
3119 {
3120     return m_page ? m_page->mainFrame() : 0;
3121 }
3122
3123 FrameView* WebPage::mainFrameView() const
3124 {
3125     if (Frame* frame = mainFrame())
3126         return frame->view();
3127     
3128     return 0;
3129 }
3130
3131 } // namespace WebKit