diff -r 000000000000 -r 4f2f89ce4247 WebCore/page/Page.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/page/Page.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,853 @@
+/*
+ * Copyright (C) 2006, 2007, 2008, 2009, 2010 Apple Inc. All Rights Reserved.
+ * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "config.h"
+#include "Page.h"
+
+#include "BackForwardController.h"
+#include "BackForwardList.h"
+#include "Base64.h"
+#include "CSSStyleSelector.h"
+#include "Chrome.h"
+#include "ChromeClient.h"
+#include "ContextMenuClient.h"
+#include "ContextMenuController.h"
+#include "DOMWindow.h"
+#include "DeviceOrientationController.h"
+#include "DragController.h"
+#include "EditorClient.h"
+#include "Event.h"
+#include "EventNames.h"
+#include "ExceptionCode.h"
+#include "FileSystem.h"
+#include "FocusController.h"
+#include "Frame.h"
+#include "FrameLoader.h"
+#include "FrameLoaderClient.h"
+#include "FrameTree.h"
+#include "FrameView.h"
+#include "HTMLElement.h"
+#include "HistoryItem.h"
+#include "InspectorController.h"
+#include "InspectorTimelineAgent.h"
+#include "Logging.h"
+#include "MediaCanStartListener.h"
+#include "Navigator.h"
+#include "NetworkStateNotifier.h"
+#include "PageGroup.h"
+#include "PluginData.h"
+#include "PluginHalter.h"
+#include "PluginView.h"
+#include "ProgressTracker.h"
+#include "RenderTheme.h"
+#include "RenderWidget.h"
+#include "RuntimeEnabledFeatures.h"
+#include "ScriptController.h"
+#include "SelectionController.h"
+#include "Settings.h"
+#include "SharedBuffer.h"
+#include "SpeechInputClient.h"
+#include "StringHash.h"
+#include "TextResourceDecoder.h"
+#include "Widget.h"
+#include <wtf/HashMap.h>
+#include <wtf/RefCountedLeakCounter.h>
+#include <wtf/StdLibExtras.h>
+
+#if ENABLE(DOM_STORAGE)
+#include "StorageArea.h"
+#include "StorageNamespace.h"
+#endif
+
+#if ENABLE(JAVASCRIPT_DEBUGGER)
+#include "ScriptDebugServer.h"
+#endif
+
+#if ENABLE(WML)
+#include "WMLPageState.h"
+#endif
+
+#if ENABLE(CLIENT_BASED_GEOLOCATION)
+#include "GeolocationController.h"
+#endif
+
+#if ENABLE(INSPECTOR) && ENABLE(OFFLINE_WEB_APPLICATIONS)
+#include "InspectorApplicationCacheAgent.h"
+#endif
+
+namespace WebCore {
+
+static HashSet<Page*>* allPages;
+
+#ifndef NDEBUG
+static WTF::RefCountedLeakCounter pageCounter("Page");
+#endif
+
+static void networkStateChanged()
+{
+    Vector<RefPtr<Frame> > frames;
+    
+#if ENABLE(INSPECTOR) && ENABLE(OFFLINE_WEB_APPLICATIONS)
+    bool isNowOnline = networkStateNotifier().onLine();
+#endif
+
+    // Get all the frames of all the pages in all the page groups
+    HashSet<Page*>::iterator end = allPages->end();
+    for (HashSet<Page*>::iterator it = allPages->begin(); it != end; ++it) {
+        for (Frame* frame = (*it)->mainFrame(); frame; frame = frame->tree()->traverseNext())
+            frames.append(frame);
+#if ENABLE(INSPECTOR) && ENABLE(OFFLINE_WEB_APPLICATIONS)
+        if (InspectorApplicationCacheAgent* applicationCacheAgent = (*it)->inspectorController()->applicationCacheAgent())
+            applicationCacheAgent->updateNetworkState(isNowOnline);
+#endif
+    }
+
+    AtomicString eventName = networkStateNotifier().onLine() ? eventNames().onlineEvent : eventNames().offlineEvent;
+    for (unsigned i = 0; i < frames.size(); i++)
+        frames[i]->document()->dispatchWindowEvent(Event::create(eventName, false, false));
+}
+
+Page::Page(ChromeClient* chromeClient, ContextMenuClient* contextMenuClient, EditorClient* editorClient, DragClient* dragClient, InspectorClient* inspectorClient, PluginHalterClient* pluginHalterClient, GeolocationControllerClient* geolocationControllerClient, DeviceOrientationClient* deviceOrientationClient, BackForwardControllerClient* backForwardControllerClient)
+    : m_chrome(new Chrome(this, chromeClient))
+    , m_dragCaretController(new SelectionController(0, true))
+#if ENABLE(DRAG_SUPPORT)
+    , m_dragController(new DragController(this, dragClient))
+#endif
+    , m_focusController(new FocusController(this))
+#if ENABLE(CONTEXT_MENUS)
+    , m_contextMenuController(new ContextMenuController(this, contextMenuClient))
+#endif
+#if ENABLE(INSPECTOR)
+    , m_inspectorController(new InspectorController(this, inspectorClient))
+#endif
+#if ENABLE(CLIENT_BASED_GEOLOCATION)
+    , m_geolocationController(new GeolocationController(this, geolocationControllerClient))
+#endif
+#if ENABLE(DEVICE_ORIENTATION)
+    , m_deviceOrientationController(RuntimeEnabledFeatures::deviceOrientationEnabled() ? new DeviceOrientationController(this, deviceOrientationClient) : 0)
+#endif
+#if ENABLE(INPUT_SPEECH)
+    , m_speechInputClient(0)
+#endif
+    , m_settings(new Settings(this))
+    , m_progress(new ProgressTracker)
+    , m_backForwardController(new BackForwardController(this, backForwardControllerClient))
+    , m_theme(RenderTheme::themeForPage(this))
+    , m_editorClient(editorClient)
+    , m_frameCount(0)
+    , m_openedByDOM(false)
+    , m_tabKeyCyclesThroughElements(true)
+    , m_defersLoading(false)
+    , m_inLowQualityInterpolationMode(false)
+    , m_cookieEnabled(true)
+    , m_areMemoryCacheClientCallsEnabled(true)
+    , m_mediaVolume(1)
+    , m_javaScriptURLsAreAllowed(true)
+    , m_didLoadUserStyleSheet(false)
+    , m_userStyleSheetModificationTime(0)
+    , m_group(0)
+    , m_debugger(0)
+    , m_customHTMLTokenizerTimeDelay(-1)
+    , m_customHTMLTokenizerChunkSize(-1)
+    , m_canStartMedia(true)
+{
+#if !ENABLE(CONTEXT_MENUS)
+    UNUSED_PARAM(contextMenuClient);
+#endif
+#if !ENABLE(DRAG_SUPPORT)
+    UNUSED_PARAM(dragClient);
+#endif
+#if !ENABLE(INSPECTOR)
+    UNUSED_PARAM(inspectorClient);
+#endif
+#if !ENABLE(CLIENT_BASED_GEOLOCATION)
+    UNUSED_PARAM(geolocationControllerClient);
+#endif
+#if !ENABLE(CLIENT_DEVICE_ORIENTATION)
+    UNUSED_PARAM(deviceOrientationClient);
+#endif
+
+    if (!allPages) {
+        allPages = new HashSet<Page*>;
+        
+        networkStateNotifier().setNetworkStateChangedFunction(networkStateChanged);
+    }
+
+    ASSERT(!allPages->contains(this));
+    allPages->add(this);
+
+    if (pluginHalterClient) {
+        m_pluginHalter.set(new PluginHalter(pluginHalterClient));
+        m_pluginHalter->setPluginAllowedRunTime(m_settings->pluginAllowedRunTime());
+    }
+
+#if ENABLE(JAVASCRIPT_DEBUGGER)
+    ScriptDebugServer::shared().pageCreated(this);
+#endif
+
+#ifndef NDEBUG
+    pageCounter.increment();
+#endif
+}
+
+Page::~Page()
+{
+    m_mainFrame->setView(0);
+    setGroupName(String());
+    allPages->remove(this);
+    
+    for (Frame* frame = mainFrame(); frame; frame = frame->tree()->traverseNext())
+        frame->pageDestroyed();
+
+    m_editorClient->pageDestroyed();
+#if ENABLE(INSPECTOR)
+    m_inspectorController->inspectedPageDestroyed();
+#endif
+
+    backForwardList()->close();
+
+#ifndef NDEBUG
+    pageCounter.decrement();
+
+    // Cancel keepAlive timers, to ensure we release all Frames before exiting.
+    // It's safe to do this because we prohibit closing a Page while JavaScript
+    // is executing.
+    Frame::cancelAllKeepAlive();
+#endif
+}
+
+void Page::setMainFrame(PassRefPtr<Frame> mainFrame)
+{
+    ASSERT(!m_mainFrame); // Should only be called during initialization
+    m_mainFrame = mainFrame;
+}
+
+bool Page::openedByDOM() const
+{
+    return m_openedByDOM;
+}
+
+void Page::setOpenedByDOM()
+{
+    m_openedByDOM = true;
+}
+
+BackForwardList* Page::backForwardList() const
+{
+    return m_backForwardController->list();
+}
+
+bool Page::goBack()
+{
+    HistoryItem* item = backForwardList()->backItem();
+    
+    if (item) {
+        goToItem(item, FrameLoadTypeBack);
+        return true;
+    }
+    return false;
+}
+
+bool Page::goForward()
+{
+    HistoryItem* item = backForwardList()->forwardItem();
+    
+    if (item) {
+        goToItem(item, FrameLoadTypeForward);
+        return true;
+    }
+    return false;
+}
+
+bool Page::canGoBackOrForward(int distance) const
+{
+    if (distance == 0)
+        return true;
+    if (distance > 0 && distance <= backForwardList()->forwardListCount())
+        return true;
+    if (distance < 0 && -distance <= backForwardList()->backListCount())
+        return true;
+    return false;
+}
+
+void Page::goBackOrForward(int distance)
+{
+    if (distance == 0)
+        return;
+
+    HistoryItem* item = backForwardList()->itemAtIndex(distance);
+    if (!item) {
+        if (distance > 0) {
+            int forwardListCount = backForwardList()->forwardListCount();
+            if (forwardListCount > 0) 
+                item = backForwardList()->itemAtIndex(forwardListCount);
+        } else {
+            int backListCount = backForwardList()->backListCount();
+            if (backListCount > 0)
+                item = backForwardList()->itemAtIndex(-backListCount);
+        }
+    }
+
+    ASSERT(item); // we should not reach this line with an empty back/forward list
+    if (item)
+        goToItem(item, FrameLoadTypeIndexedBackForward);
+}
+
+void Page::goToItem(HistoryItem* item, FrameLoadType type)
+{
+    // Abort any current load unless we're navigating the current document to a new state object
+    HistoryItem* currentItem = m_mainFrame->loader()->history()->currentItem();
+    if (!item->stateObject() || !currentItem || item->documentSequenceNumber() != currentItem->documentSequenceNumber() || item == currentItem) {
+        // Define what to do with any open database connections. By default we stop them and terminate the database thread.
+        DatabasePolicy databasePolicy = DatabasePolicyStop;
+
+#if ENABLE(DATABASE)
+        // If we're navigating the history via a fragment on the same document, then we do not want to stop databases.
+        const KURL& currentURL = m_mainFrame->loader()->url();
+        const KURL& newURL = item->url();
+    
+        if (newURL.hasFragmentIdentifier() && equalIgnoringFragmentIdentifier(currentURL, newURL))
+            databasePolicy = DatabasePolicyContinue;
+#endif
+
+        m_mainFrame->loader()->stopAllLoaders(databasePolicy);
+    }
+        
+    m_mainFrame->loader()->history()->goToItem(item, type);
+}
+
+int Page::getHistoryLength()
+{
+    return backForwardList()->backListCount() + 1 + backForwardList()->forwardListCount();
+}
+
+void Page::setGlobalHistoryItem(HistoryItem* item)
+{
+    m_globalHistoryItem = item;
+}
+
+void Page::setGroupName(const String& name)
+{
+    if (m_group && !m_group->name().isEmpty()) {
+        ASSERT(m_group != m_singlePageGroup.get());
+        ASSERT(!m_singlePageGroup);
+        m_group->removePage(this);
+    }
+
+    if (name.isEmpty())
+        m_group = m_singlePageGroup.get();
+    else {
+        m_singlePageGroup.clear();
+        m_group = PageGroup::pageGroup(name);
+        m_group->addPage(this);
+    }
+}
+
+const String& Page::groupName() const
+{
+    DEFINE_STATIC_LOCAL(String, nullString, ());
+    return m_group ? m_group->name() : nullString;
+}
+
+void Page::initGroup()
+{
+    ASSERT(!m_singlePageGroup);
+    ASSERT(!m_group);
+    m_singlePageGroup.set(new PageGroup(this));
+    m_group = m_singlePageGroup.get();
+}
+
+void Page::setNeedsReapplyStyles()
+{
+    if (!allPages)
+        return;
+    HashSet<Page*>::iterator end = allPages->end();
+    for (HashSet<Page*>::iterator it = allPages->begin(); it != end; ++it)
+        for (Frame* frame = (*it)->mainFrame(); frame; frame = frame->tree()->traverseNext())
+            frame->setNeedsReapplyStyles();
+}
+
+void Page::refreshPlugins(bool reload)
+{
+    if (!allPages)
+        return;
+
+    PluginData::refresh();
+
+    Vector<RefPtr<Frame> > framesNeedingReload;
+
+    HashSet<Page*>::iterator end = allPages->end();
+    for (HashSet<Page*>::iterator it = allPages->begin(); it != end; ++it) {
+        Page* page = *it;
+        
+        // Clear out the page's plug-in data.
+        page->m_pluginData = 0;
+
+        if (!reload)
+            continue;
+        
+        for (Frame* frame = (*it)->mainFrame(); frame; frame = frame->tree()->traverseNext()) {
+            if (frame->loader()->subframeLoader()->containsPlugins())
+                framesNeedingReload.append(frame);
+        }
+    }
+
+    for (size_t i = 0; i < framesNeedingReload.size(); ++i)
+        framesNeedingReload[i]->loader()->reload();
+}
+
+PluginData* Page::pluginData() const
+{
+    if (!mainFrame()->loader()->subframeLoader()->allowPlugins(NotAboutToInstantiatePlugin))
+        return 0;
+    if (!m_pluginData)
+        m_pluginData = PluginData::create(this);
+    return m_pluginData.get();
+}
+
+inline MediaCanStartListener* Page::takeAnyMediaCanStartListener()
+{
+    for (Frame* frame = mainFrame(); frame; frame = frame->tree()->traverseNext()) {
+        if (MediaCanStartListener* listener = frame->document()->takeAnyMediaCanStartListener())
+            return listener;
+    }
+    return 0;
+}
+
+void Page::setCanStartMedia(bool canStartMedia)
+{
+    if (m_canStartMedia == canStartMedia)
+        return;
+
+    m_canStartMedia = canStartMedia;
+
+    while (m_canStartMedia) {
+        MediaCanStartListener* listener = takeAnyMediaCanStartListener();
+        if (!listener)
+            break;
+        listener->mediaCanStart();
+    }
+}
+
+static Frame* incrementFrame(Frame* curr, bool forward, bool wrapFlag)
+{
+    return forward
+        ? curr->tree()->traverseNextWithWrap(wrapFlag)
+        : curr->tree()->traversePreviousWithWrap(wrapFlag);
+}
+
+bool Page::findString(const String& target, TextCaseSensitivity caseSensitivity, FindDirection direction, bool shouldWrap)
+{
+    if (target.isEmpty() || !mainFrame())
+        return false;
+
+    Frame* frame = focusController()->focusedOrMainFrame();
+    Frame* startFrame = frame;
+    do {
+        if (frame->findString(target, direction == FindDirectionForward, caseSensitivity == TextCaseSensitive, false, true)) {
+            if (frame != startFrame)
+                startFrame->selection()->clear();
+            focusController()->setFocusedFrame(frame);
+            return true;
+        }
+        frame = incrementFrame(frame, direction == FindDirectionForward, shouldWrap);
+    } while (frame && frame != startFrame);
+
+    // Search contents of startFrame, on the other side of the selection that we did earlier.
+    // We cheat a bit and just research with wrap on
+    if (shouldWrap && !startFrame->selection()->isNone()) {
+        bool found = startFrame->findString(target, direction == FindDirectionForward, caseSensitivity == TextCaseSensitive, true, true);
+        focusController()->setFocusedFrame(frame);
+        return found;
+    }
+
+    return false;
+}
+
+unsigned int Page::markAllMatchesForText(const String& target, TextCaseSensitivity caseSensitivity, bool shouldHighlight, unsigned limit)
+{
+    if (target.isEmpty() || !mainFrame())
+        return 0;
+
+    unsigned matches = 0;
+
+    Frame* frame = mainFrame();
+    do {
+        frame->setMarkedTextMatchesAreHighlighted(shouldHighlight);
+        matches += frame->markAllMatchesForText(target, caseSensitivity == TextCaseSensitive, (limit == 0) ? 0 : (limit - matches));
+        frame = incrementFrame(frame, true, false);
+    } while (frame);
+
+    return matches;
+}
+
+void Page::unmarkAllTextMatches()
+{
+    if (!mainFrame())
+        return;
+
+    Frame* frame = mainFrame();
+    do {
+        frame->document()->removeMarkers(DocumentMarker::TextMatch);
+        frame = incrementFrame(frame, true, false);
+    } while (frame);
+}
+
+const VisibleSelection& Page::selection() const
+{
+    return focusController()->focusedOrMainFrame()->selection()->selection();
+}
+
+void Page::setDefersLoading(bool defers)
+{
+    if (!m_settings->loadDeferringEnabled())
+        return;
+
+    if (defers == m_defersLoading)
+        return;
+
+    m_defersLoading = defers;
+    for (Frame* frame = mainFrame(); frame; frame = frame->tree()->traverseNext())
+        frame->loader()->setDefersLoading(defers);
+}
+
+void Page::clearUndoRedoOperations()
+{
+    m_editorClient->clearUndoRedoOperations();
+}
+
+bool Page::inLowQualityImageInterpolationMode() const
+{
+    return m_inLowQualityInterpolationMode;
+}
+
+void Page::setInLowQualityImageInterpolationMode(bool mode)
+{
+    m_inLowQualityInterpolationMode = mode;
+}
+
+void Page::setMediaVolume(float volume)
+{
+    if (volume < 0 || volume > 1)
+        return;
+
+    if (m_mediaVolume == volume)
+        return;
+
+    m_mediaVolume = volume;
+    for (Frame* frame = mainFrame(); frame; frame = frame->tree()->traverseNext()) {
+        frame->document()->mediaVolumeDidChange();
+    }
+}
+
+void Page::didMoveOnscreen()
+{
+    for (Frame* frame = mainFrame(); frame; frame = frame->tree()->traverseNext()) {
+        if (frame->view())
+            frame->view()->didMoveOnscreen();
+    }
+}
+
+void Page::willMoveOffscreen()
+{
+    for (Frame* frame = mainFrame(); frame; frame = frame->tree()->traverseNext()) {
+        if (frame->view())
+            frame->view()->willMoveOffscreen();
+    }
+}
+
+void Page::userStyleSheetLocationChanged()
+{
+    // FIXME: Eventually we will move to a model of just being handed the sheet
+    // text instead of loading the URL ourselves.
+    KURL url = m_settings->userStyleSheetLocation();
+    if (url.isLocalFile())
+        m_userStyleSheetPath = url.fileSystemPath();
+    else
+        m_userStyleSheetPath = String();
+
+    m_didLoadUserStyleSheet = false;
+    m_userStyleSheet = String();
+    m_userStyleSheetModificationTime = 0;
+    
+    // Data URLs with base64-encoded UTF-8 style sheets are common. We can process them
+    // synchronously and avoid using a loader. 
+    if (url.protocolIs("data") && url.string().startsWith("data:text/css;charset=utf-8;base64,")) {
+        m_didLoadUserStyleSheet = true;
+        
+        const unsigned prefixLength = 35;
+        Vector<char> encodedData(url.string().length() - prefixLength);
+        for (unsigned i = prefixLength; i < url.string().length(); ++i)
+            encodedData[i - prefixLength] = static_cast<char>(url.string()[i]);
+
+        Vector<char> styleSheetAsUTF8;
+        if (base64Decode(encodedData, styleSheetAsUTF8))
+            m_userStyleSheet = String::fromUTF8(styleSheetAsUTF8.data(), styleSheetAsUTF8.size());
+    }
+    
+    for (Frame* frame = mainFrame(); frame; frame = frame->tree()->traverseNext()) {
+        if (frame->document())
+            frame->document()->clearPageUserSheet();
+    }
+}
+
+const String& Page::userStyleSheet() const
+{
+    if (m_userStyleSheetPath.isEmpty())
+        return m_userStyleSheet;
+
+    time_t modTime;
+    if (!getFileModificationTime(m_userStyleSheetPath, modTime)) {
+        // The stylesheet either doesn't exist, was just deleted, or is
+        // otherwise unreadable. If we've read the stylesheet before, we should
+        // throw away that data now as it no longer represents what's on disk.
+        m_userStyleSheet = String();
+        return m_userStyleSheet;
+    }
+
+    // If the stylesheet hasn't changed since the last time we read it, we can
+    // just return the old data.
+    if (m_didLoadUserStyleSheet && modTime <= m_userStyleSheetModificationTime)
+        return m_userStyleSheet;
+
+    m_didLoadUserStyleSheet = true;
+    m_userStyleSheet = String();
+    m_userStyleSheetModificationTime = modTime;
+
+    // FIXME: It would be better to load this asynchronously to avoid blocking
+    // the process, but we will first need to create an asynchronous loading
+    // mechanism that is not tied to a particular Frame. We will also have to
+    // determine what our behavior should be before the stylesheet is loaded
+    // and what should happen when it finishes loading, especially with respect
+    // to when the load event fires, when Document::close is called, and when
+    // layout/paint are allowed to happen.
+    RefPtr<SharedBuffer> data = SharedBuffer::createWithContentsOfFile(m_userStyleSheetPath);
+    if (!data)
+        return m_userStyleSheet;
+
+    RefPtr<TextResourceDecoder> decoder = TextResourceDecoder::create("text/css");
+    m_userStyleSheet = decoder->decode(data->data(), data->size());
+    m_userStyleSheet += decoder->flush();
+
+    return m_userStyleSheet;
+}
+
+void Page::removeAllVisitedLinks()
+{
+    if (!allPages)
+        return;
+    HashSet<PageGroup*> groups;
+    HashSet<Page*>::iterator pagesEnd = allPages->end();
+    for (HashSet<Page*>::iterator it = allPages->begin(); it != pagesEnd; ++it) {
+        if (PageGroup* group = (*it)->groupPtr())
+            groups.add(group);
+    }
+    HashSet<PageGroup*>::iterator groupsEnd = groups.end();
+    for (HashSet<PageGroup*>::iterator it = groups.begin(); it != groupsEnd; ++it)
+        (*it)->removeVisitedLinks();
+}
+
+void Page::allVisitedStateChanged(PageGroup* group)
+{
+    ASSERT(group);
+    if (!allPages)
+        return;
+
+    HashSet<Page*>::iterator pagesEnd = allPages->end();
+    for (HashSet<Page*>::iterator it = allPages->begin(); it != pagesEnd; ++it) {
+        Page* page = *it;
+        if (page->m_group != group)
+            continue;
+        for (Frame* frame = page->m_mainFrame.get(); frame; frame = frame->tree()->traverseNext()) {
+            if (CSSStyleSelector* styleSelector = frame->document()->styleSelector())
+                styleSelector->allVisitedStateChanged();
+        }
+    }
+}
+
+void Page::visitedStateChanged(PageGroup* group, LinkHash visitedLinkHash)
+{
+    ASSERT(group);
+    if (!allPages)
+        return;
+
+    HashSet<Page*>::iterator pagesEnd = allPages->end();
+    for (HashSet<Page*>::iterator it = allPages->begin(); it != pagesEnd; ++it) {
+        Page* page = *it;
+        if (page->m_group != group)
+            continue;
+        for (Frame* frame = page->m_mainFrame.get(); frame; frame = frame->tree()->traverseNext()) {
+            if (CSSStyleSelector* styleSelector = frame->document()->styleSelector())
+                styleSelector->visitedStateChanged(visitedLinkHash);
+        }
+    }
+}
+
+void Page::setDebuggerForAllPages(JSC::Debugger* debugger)
+{
+    ASSERT(allPages);
+
+    HashSet<Page*>::iterator end = allPages->end();
+    for (HashSet<Page*>::iterator it = allPages->begin(); it != end; ++it)
+        (*it)->setDebugger(debugger);
+}
+
+void Page::setDebugger(JSC::Debugger* debugger)
+{
+    if (m_debugger == debugger)
+        return;
+
+    m_debugger = debugger;
+
+    for (Frame* frame = m_mainFrame.get(); frame; frame = frame->tree()->traverseNext())
+        frame->script()->attachDebugger(m_debugger);
+}
+
+#if ENABLE(DOM_STORAGE)
+StorageNamespace* Page::sessionStorage(bool optionalCreate)
+{
+    if (!m_sessionStorage && optionalCreate)
+        m_sessionStorage = StorageNamespace::sessionStorageNamespace(this, m_settings->sessionStorageQuota());
+
+    return m_sessionStorage.get();
+}
+
+void Page::setSessionStorage(PassRefPtr<StorageNamespace> newStorage)
+{
+    m_sessionStorage = newStorage;
+}
+#endif
+
+#if ENABLE(WML)
+WMLPageState* Page::wmlPageState()
+{
+    if (!m_wmlPageState)    
+        m_wmlPageState.set(new WMLPageState(this));
+    return m_wmlPageState.get(); 
+}
+#endif
+
+void Page::setCustomHTMLTokenizerTimeDelay(double customHTMLTokenizerTimeDelay)
+{
+    if (customHTMLTokenizerTimeDelay < 0) {
+        m_customHTMLTokenizerTimeDelay = -1;
+        return;
+    }
+    m_customHTMLTokenizerTimeDelay = customHTMLTokenizerTimeDelay;
+}
+
+void Page::setCustomHTMLTokenizerChunkSize(int customHTMLTokenizerChunkSize)
+{
+    if (customHTMLTokenizerChunkSize < 0) {
+        m_customHTMLTokenizerChunkSize = -1;
+        return;
+    }
+    m_customHTMLTokenizerChunkSize = customHTMLTokenizerChunkSize;
+}
+
+void Page::setMemoryCacheClientCallsEnabled(bool enabled)
+{
+    if (m_areMemoryCacheClientCallsEnabled == enabled)
+        return;
+
+    m_areMemoryCacheClientCallsEnabled = enabled;
+    if (!enabled)
+        return;
+
+    for (RefPtr<Frame> frame = mainFrame(); frame; frame = frame->tree()->traverseNext())
+        frame->loader()->tellClientAboutPastMemoryCacheLoads();
+}
+
+void Page::setJavaScriptURLsAreAllowed(bool areAllowed)
+{
+    m_javaScriptURLsAreAllowed = areAllowed;
+}
+
+bool Page::javaScriptURLsAreAllowed() const
+{
+    return m_javaScriptURLsAreAllowed;
+}
+
+#if ENABLE(INSPECTOR)
+InspectorTimelineAgent* Page::inspectorTimelineAgent() const
+{
+    return m_inspectorController->timelineAgent();
+}
+#endif
+
+void Page::privateBrowsingStateChanged()
+{
+    bool privateBrowsingEnabled = m_settings->privateBrowsingEnabled();
+
+    // Collect the PluginViews in to a vector to ensure that action the plug-in takes
+    // from below privateBrowsingStateChanged does not affect their lifetime.
+
+    Vector<RefPtr<PluginView>, 32> pluginViews;
+    for (Frame* frame = mainFrame(); frame; frame = frame->tree()->traverseNext()) {
+        FrameView* view = frame->view();
+        if (!view)
+            return;
+
+        const HashSet<RefPtr<Widget> >* children = view->children();
+        ASSERT(children);
+
+        HashSet<RefPtr<Widget> >::const_iterator end = children->end();
+        for (HashSet<RefPtr<Widget> >::const_iterator it = children->begin(); it != end; ++it) {
+            Widget* widget = (*it).get();
+            if (!widget->isPluginView())
+                continue;
+            pluginViews.append(static_cast<PluginView*>(widget));
+        }
+    }
+
+    for (size_t i = 0; i < pluginViews.size(); i++)
+        pluginViews[i]->privateBrowsingStateChanged(privateBrowsingEnabled);
+}
+
+void Page::pluginAllowedRunTimeChanged()
+{
+    if (m_pluginHalter)
+        m_pluginHalter->setPluginAllowedRunTime(m_settings->pluginAllowedRunTime());
+}
+
+void Page::didStartPlugin(HaltablePlugin* obj)
+{
+    if (m_pluginHalter)
+        m_pluginHalter->didStartPlugin(obj);
+}
+
+void Page::didStopPlugin(HaltablePlugin* obj)
+{
+    if (m_pluginHalter)
+        m_pluginHalter->didStopPlugin(obj);
+}
+
+#if !ASSERT_DISABLED
+void Page::checkFrameCountConsistency() const
+{
+    ASSERT(m_frameCount >= 0);
+
+    int frameCount = 0;
+    for (Frame* frame = mainFrame(); frame; frame = frame->tree()->traverseNext())
+        ++frameCount;
+
+    ASSERT(m_frameCount + 1 == frameCount);
+}
+#endif
+} // namespace WebCore