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Merge Webkit at r70949: Initial merge by git.
[android-x86/external-webkit.git] / WebKit / mac / WebView / WebView.mm
index f2e76c1..7456898 100644 (file)
@@ -47,6 +47,8 @@
 #import "WebDefaultPolicyDelegate.h"
 #import "WebDefaultUIDelegate.h"
 #import "WebDelegateImplementationCaching.h"
+#import "WebDeviceOrientationClient.h"
+#import "WebDeviceOrientationProvider.h"
 #import "WebDocument.h"
 #import "WebDocumentInternal.h"
 #import "WebDownload.h"
 #import <JavaScriptCore/JSValueRef.h>
 #import <WebCore/AbstractDatabase.h>
 #import <WebCore/ApplicationCacheStorage.h>
-#import <WebCore/BackForwardList.h>
+#import <WebCore/BackForwardListImpl.h>
 #import <WebCore/Cache.h>
 #import <WebCore/ColorMac.h>
 #import <WebCore/CSSComputedStyleDeclaration.h>
 #import <WebCore/HistoryItem.h>
 #import <WebCore/IconDatabase.h>
 #import <WebCore/JSCSSStyleDeclaration.h>
+#import <WebCore/JSDocument.h>
 #import <WebCore/JSElement.h>
+#import <WebCore/JSNodeList.h>
 #import <WebCore/Logging.h>
 #import <WebCore/MIMETypeRegistry.h>
+#import <WebCore/NodeList.h>
 #import <WebCore/Page.h>
 #import <WebCore/PageCache.h>
 #import <WebCore/PageGroup.h>
 #import <WebCore/PlatformMouseEvent.h>
 #import <WebCore/ProgressTracker.h>
+#import <WebCore/RenderView.h>
 #import <WebCore/RenderWidget.h>
 #import <WebCore/ResourceHandle.h>
 #import <WebCore/RuntimeApplicationChecks.h>
 #import <wtf/StdLibExtras.h>
 #import <wtf/Threading.h>
 
+#if !defined(BUILDING_ON_TIGER) && !defined(BUILDING_ON_LEOPARD) && !defined(BUILDING_ON_SNOW_LEOPARD)
+#import <AppKit/NSTextChecker.h>
+#endif
+
 #if ENABLE(DASHBOARD_SUPPORT)
 #import <WebKit/WebDashboardRegion.h>
 #endif
 #import <WebCore/GeolocationError.h>
 #endif
 
-#if ENABLE(VIDEO) && USE(GSTREAMER)
+#if ENABLE(GLIB_SUPPORT)
 #import <glib.h>
 #endif
 
@@ -376,7 +386,7 @@ static const char webViewIsOpen[] = "At least one WebView is still open.";
 #if USE(ACCELERATED_COMPOSITING)
 - (void)_clearLayerSyncLoopObserver;
 #endif
-#if ENABLE(VIDEO) && USE(GSTREAMER)
+#if ENABLE(GLIB_SUPPORT)
 - (void)_clearGlibLoopObserver;
 #endif
 @end
@@ -394,6 +404,7 @@ NSString *WebElementLinkLabelKey =          @"WebElementLinkLabel";
 NSString *WebElementLinkTargetFrameKey =    @"WebElementTargetFrame";
 NSString *WebElementLinkTitleKey =          @"WebElementLinkTitle";
 NSString *WebElementLinkURLKey =            @"WebElementLinkURL";
+NSString *WebElementMediaURLKey =           @"WebElementMediaURL";
 NSString *WebElementSpellingToolTipKey =    @"WebElementSpellingToolTip";
 NSString *WebElementTitleKey =              @"WebElementTitle";
 NSString *WebElementLinkIsLiveKey =         @"WebElementLinkIsLive";
@@ -628,6 +639,19 @@ static bool shouldEnableLoadDeferring()
     return _private->usesDocumentViews;
 }
 
+static NSString *leakMailQuirksUserScriptPath()
+{
+    NSString *scriptPath = [[NSBundle bundleForClass:[WebView class]] pathForResource:@"MailQuirksUserScript" ofType:@"js"];
+    return [[NSString alloc] initWithContentsOfFile:scriptPath];
+}
+
+- (void)_injectMailQuirksScript
+{
+    static NSString *mailQuirksScriptPath = leakMailQuirksUserScriptPath();
+    core(self)->group().addUserScriptToWorld(core([WebScriptWorld world]),
+        mailQuirksScriptPath, KURL(), 0, 0, InjectAtDocumentEnd, InjectInAllFrames);
+}
+
 - (void)_commonInitializationWithFrameName:(NSString *)frameName groupName:(NSString *)groupName usesDocumentViews:(BOOL)usesDocumentViews
 {
     WebCoreThreadViolationCheckRoundTwo();
@@ -669,6 +693,7 @@ static bool shouldEnableLoadDeferring()
         
         // Initialize our platform strategies.
         WebPlatformStrategies::initialize();
+        Settings::setMinDOMTimerInterval(0.004);
 
         didOneTimeInitialization = true;
     }
@@ -683,6 +708,9 @@ static bool shouldEnableLoadDeferring()
 #if ENABLE(CLIENT_BASED_GEOLOCATION)
     pageClients.geolocationControllerClient = new WebGeolocationControllerClient(self);
 #endif
+#if ENABLE(DEVICE_ORIENTATION)
+    pageClients.deviceOrientationClient = new WebDeviceOrientationClient(self);
+#endif
     _private->page = new Page(pageClients);
 
     _private->page->setCanStartMedia([self window]);
@@ -737,10 +765,12 @@ static bool shouldEnableLoadDeferring()
     if (!WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITHOUT_CONTENT_SNIFFING_FOR_FILE_URLS))
         ResourceHandle::forceContentSniffing();
 
-#if ENABLE(VIDEO) && USE(GSTREAMER)
+#if ENABLE(GLIB_SUPPORT)
     [self _scheduleGlibContextIterations];
 #endif
 
+    if (runningTigerMail() || runningLeopardMail())
+        [self _injectMailQuirksScript];
 }
 
 - (id)_initWithFrame:(NSRect)f frameName:(NSString *)frameName groupName:(NSString *)groupName usesDocumentViews:(BOOL)usesDocumentViews
@@ -1138,7 +1168,7 @@ static bool fastDocumentTeardownEnabled()
     [self _clearLayerSyncLoopObserver];
 #endif
     
-#if ENABLE(VIDEO) && USE(GSTREAMER)
+#if ENABLE(GLIB_SUPPORT)
     [self _clearGlibLoopObserver];
 #endif
 
@@ -1348,6 +1378,33 @@ static bool fastDocumentTeardownEnabled()
     return needsQuirk;
 }
 
+
+- (BOOL)_needsPreHTML5ParserQuirks
+{    
+    // AOL Instant Messenger and Microsoft My Day contain markup incompatible
+    // with the new HTML5 parser. If these applications were linked against a
+    // version of WebKit prior to the introduction of the HTML5 parser, enable
+    // parser quirks to maintain compatibility. For details, see 
+    // <https://bugs.webkit.org/show_bug.cgi?id=46134> and
+    // <https://bugs.webkit.org/show_bug.cgi?id=46334>.
+    static bool isApplicationNeedingParserQuirks = !WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITH_HTML5_PARSER)
+        && (applicationIsAOLInstantMessenger() || applicationIsMicrosoftMyDay());
+
+    return isApplicationNeedingParserQuirks
+#if ENABLE(DASHBOARD_SUPPORT)
+        // Pre-HTML5 parser quirks are required to remain compatible with many
+        // Dashboard widgets. See <rdar://problem/8175982>.
+        || (_private->page && _private->page->settings()->usesDashboardBackwardCompatibilityMode())
+#endif
+        || [[self preferences] usePreHTML5ParserQuirks];
+}
+
+- (BOOL)_needsUnrestrictedGetMatchedCSSRules
+{
+    static bool needsUnrestrictedGetMatchedCSSRules = !WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITH_GET_MATCHED_CSS_RULES_RESTRICTIONS) && applicationIsSafari();
+    return needsUnrestrictedGetMatchedCSSRules;
+}
+
 - (void)_preferencesChangedNotification:(NSNotification *)notification
 {
     WebPreferences *preferences = (WebPreferences *)[notification object];
@@ -1422,7 +1479,6 @@ static bool fastDocumentTeardownEnabled()
     settings->setWebArchiveDebugModeEnabled([preferences webArchiveDebugModeEnabled]);
     settings->setLocalFileContentSniffingEnabled([preferences localFileContentSniffingEnabled]);
     settings->setOfflineWebApplicationCacheEnabled([preferences offlineWebApplicationCacheEnabled]);
-    settings->setZoomMode([preferences zoomsTextOnly] ? ZoomTextOnly : ZoomPage);
     settings->setJavaScriptCanAccessClipboard([preferences javaScriptCanAccessClipboard]);
     settings->setXSSAuditorEnabled([preferences isXSSAuditorEnabled]);
     settings->setEnforceCSSMIMETypeInNoQuirksMode(!WKAppVersionCheckLessThan(@"com.apple.iWeb", -1, 2.1));
@@ -1430,21 +1486,31 @@ static bool fastDocumentTeardownEnabled()
     
     // FIXME: Enabling accelerated compositing when WebGL is enabled causes tests to fail on Leopard which expect HW compositing to be disabled.
     // Until we fix that, I will comment out the test (CFM)
-    settings->setAcceleratedCompositingEnabled((coreVideoHas7228836Fix() || [preferences webGLEnabled]) && [preferences acceleratedCompositingEnabled]);
+    settings->setAcceleratedCompositingEnabled((coreVideoHas7228836Fix() || [preferences webGLEnabled] || 
+        [preferences accelerated2dCanvasEnabled]) && [preferences acceleratedCompositingEnabled]);
     settings->setShowDebugBorders([preferences showDebugBorders]);
     settings->setShowRepaintCounter([preferences showRepaintCounter]);
     settings->setPluginAllowedRunTime([preferences pluginAllowedRunTime]);
     settings->setWebGLEnabled([preferences webGLEnabled]);
+    settings->setAccelerated2dCanvasEnabled([preferences accelerated2dCanvasEnabled]);
     settings->setLoadDeferringEnabled(shouldEnableLoadDeferring());
     settings->setFrameFlatteningEnabled([preferences isFrameFlatteningEnabled]);
+    settings->setSpatialNavigationEnabled([preferences isSpatialNavigationEnabled]);
     settings->setPaginateDuringLayoutEnabled([preferences paginateDuringLayoutEnabled]);
 #if ENABLE(FULLSCREEN_API)
     settings->setFullScreenEnabled([preferences fullScreenEnabled]);
 #endif
     settings->setMemoryInfoEnabled([preferences memoryInfoEnabled]);
+    settings->setHyperlinkAuditingEnabled([preferences hyperlinkAuditingEnabled]);
+    settings->setUsePreHTML5ParserQuirks([self _needsPreHTML5ParserQuirks]);
+    settings->setCrossOriginCheckInGetMatchedCSSRulesDisabled([self _needsUnrestrictedGetMatchedCSSRules]);
 
     // Application Cache Preferences are stored on the global cache storage manager, not in Settings.
     [WebApplicationCache setDefaultOriginQuota:[preferences applicationCacheDefaultOriginQuota]];
+
+    BOOL zoomsTextOnly = [preferences zoomsTextOnly];
+    if (_private->zoomsTextOnly != zoomsTextOnly)
+        [self _setZoomMultiplier:_private->zoomMultiplier isTextOnly:zoomsTextOnly];
 }
 
 static inline IMP getMethod(id o, SEL s)
@@ -1903,9 +1969,38 @@ static inline IMP getMethod(id o, SEL s)
     Frame* mainFrame = [self _mainCoreFrame];
     if (!mainFrame)
         return nil;
-    NSMutableDictionary *regions = mainFrame->dashboardRegionsDictionary();
-    [self _addScrollerDashboardRegions:regions];
-    return regions;
+
+    const Vector<DashboardRegionValue>& regions = mainFrame->document()->dashboardRegions();
+    size_t size = regions.size();
+
+    NSMutableDictionary *webRegions = [NSMutableDictionary dictionaryWithCapacity:size];
+    for (size_t i = 0; i < size; i++) {
+        const DashboardRegionValue& region = regions[i];
+
+        if (region.type == StyleDashboardRegion::None)
+            continue;
+
+        NSString *label = region.label;
+        WebDashboardRegionType type = WebDashboardRegionTypeNone;
+        if (region.type == StyleDashboardRegion::Circle)
+            type = WebDashboardRegionTypeCircle;
+        else if (region.type == StyleDashboardRegion::Rectangle)
+            type = WebDashboardRegionTypeRectangle;
+        NSMutableArray *regionValues = [webRegions objectForKey:label];
+        if (!regionValues) {
+            regionValues = [[NSMutableArray alloc] initWithCapacity:1];
+            [webRegions setObject:regionValues forKey:label];
+            [regionValues release];
+        }
+
+        WebDashboardRegion *webRegion = [[WebDashboardRegion alloc] initWithRect:region.bounds clip:region.clip type:type];
+        [regionValues addObject:webRegion];
+        [webRegion release];
+    }
+
+    [self _addScrollerDashboardRegions:webRegions];
+
+    return webRegions;
 }
 
 - (void)_setDashboardBehavior:(WebDashboardBehavior)behavior to:(BOOL)flag
@@ -1938,6 +2033,11 @@ static inline IMP getMethod(id o, SEL s)
             break;
         }
     }
+
+    // Pre-HTML5 parser quirks should be enabled if Dashboard is in backward
+    // compatibility mode. See <rdar://problem/8175982>.
+    if (_private->page)
+        _private->page->settings()->setUsePreHTML5ParserQuirks([self _needsPreHTML5ParserQuirks]);
 }
 
 - (BOOL)_dashboardBehavior:(WebDashboardBehavior)behavior
@@ -2526,6 +2626,24 @@ static PassOwnPtr<Vector<String> > toStringVector(NSArray* patterns)
     SchemeRegistry::registerURLSchemeAsSecure(scheme);
 }
 
+- (void)_scaleWebView:(float)scale
+{
+    Frame* coreFrame = [self _mainCoreFrame];
+    if (!coreFrame)
+        return;
+
+    coreFrame->scalePage(scale);
+}
+
+- (float)_viewScaleFactor
+{
+    Frame* coreFrame = [self _mainCoreFrame];
+    if (!coreFrame)
+        return 1;
+
+    return coreFrame->pageScaleFactor();
+}
+
 @end
 
 @implementation _WebSafeForwarder
@@ -2599,6 +2717,13 @@ static PassOwnPtr<Vector<String> > toStringVector(NSArray* patterns)
     automaticTextReplacementEnabled = [[NSUserDefaults standardUserDefaults] boolForKey:WebAutomaticTextReplacementEnabled];
     automaticSpellingCorrectionEnabled = [[NSUserDefaults standardUserDefaults] boolForKey:WebAutomaticSpellingCorrectionEnabled];
 #endif
+
+#if !defined(BUILDING_ON_TIGER) && !defined(BUILDING_ON_LEOPARD) && !defined(BUILDING_ON_SNOW_LEOPARD)
+    if (![[NSUserDefaults standardUserDefaults] objectForKey:WebAutomaticTextReplacementEnabled])
+        automaticTextReplacementEnabled = [NSSpellChecker isAutomaticTextReplacementEnabled];
+    if (![[NSUserDefaults standardUserDefaults] objectForKey:WebAutomaticSpellingCorrectionEnabled])
+        automaticSpellingCorrectionEnabled = [NSSpellChecker isAutomaticSpellingCorrectionEnabled];
+#endif
 }
 
 + (void)_applicationWillTerminate
@@ -2881,7 +3006,7 @@ static bool needsWebViewInitThreadWorkaround()
 
         LOG(Encoding, "FrameName = %@, GroupName = %@, useBackForwardList = %d\n", frameName, groupName, (int)useBackForwardList);
         [result _commonInitializationWithFrameName:frameName groupName:groupName usesDocumentViews:YES];
-        [result page]->backForwardList()->setEnabled(useBackForwardList);
+        static_cast<BackForwardListImpl*>([result page]->backForwardList())->setEnabled(useBackForwardList);
         result->_private->allowsUndo = allowsUndo;
         if (preferences)
             [result setPreferences:preferences];
@@ -2905,7 +3030,7 @@ static bool needsWebViewInitThreadWorkaround()
     // Restore the subviews we set aside.
     _subviews = originalSubviews;
 
-    BOOL useBackForwardList = _private->page && _private->page->backForwardList()->enabled();
+    BOOL useBackForwardList = _private->page && static_cast<BackForwardListImpl*>(_private->page->backForwardList())->enabled();
     if ([encoder allowsKeyedCoding]) {
         [encoder encodeObject:[[self mainFrame] name] forKey:@"FrameName"];
         [encoder encodeObject:[self groupName] forKey:@"GroupName"];
@@ -3216,16 +3341,17 @@ static bool needsWebViewInitThreadWorkaround()
 {
     if (!_private->page)
         return nil;
-    if (!_private->page->backForwardList()->enabled())
+    BackForwardListImpl* list = static_cast<BackForwardListImpl*>(_private->page->backForwardList());
+    if (!list->enabled())
         return nil;
-    return kit(_private->page->backForwardList());
+    return kit(list);
 }
 
 - (void)setMaintainsBackForwardList:(BOOL)flag
 {
     if (!_private->page)
         return;
-    _private->page->backForwardList()->setEnabled(flag);
+    static_cast<BackForwardListImpl*>(_private->page->backForwardList())->setEnabled(flag);
 }
 
 - (BOOL)goBack
@@ -3267,17 +3393,16 @@ static bool needsWebViewInitThreadWorkaround()
 {
     // NOTE: This has no visible effect when viewing a PDF (see <rdar://problem/4737380>)
     _private->zoomMultiplier = multiplier;
+    _private->zoomsTextOnly = isTextOnly;
 
-    ASSERT(_private->page);
-    if (_private->page)
-        _private->page->settings()->setZoomMode(isTextOnly ? ZoomTextOnly : ZoomPage);
-
-    // FIXME: It would be nice to rework this code so that _private->zoomMultiplier doesn't exist
-    // and instead FrameView::zoomFactor is used.
+    // FIXME: It might be nice to rework this code so that _private->zoomMultiplier doesn't exist
+    // and instead the zoom factors stored in Frame are used.
     Frame* coreFrame = [self _mainCoreFrame];
     if (coreFrame) {
-        if (FrameView* view = coreFrame->view())
-            view->setZoomFactor(multiplier, isTextOnly ? ZoomTextOnly : ZoomPage);
+        if (_private->zoomsTextOnly)
+            coreFrame->setPageAndTextZoomFactors(1, multiplier);
+        else
+            coreFrame->setPageAndTextZoomFactors(multiplier, 1);
     }
 }
 
@@ -3298,7 +3423,7 @@ static bool needsWebViewInitThreadWorkaround()
     if (!_private->page)
         return NO;
     
-    return _private->page->settings()->zoomMode() == ZoomTextOnly;
+    return _private->zoomsTextOnly;
 }
 
 #define MinimumZoomMultiplier       0.5f
@@ -4361,6 +4486,9 @@ static NSAppleEventDescriptor* aeDescFromJSValue(ExecState* exec, JSValue jsValu
 
 - (BOOL)canMarkAllTextMatches
 {
+    if (_private->closed)
+        return NO;
+
     WebFrame *frame = [self mainFrame];
     do {
         id <WebDocumentView> view = [[frame frameView] documentView];
@@ -4375,11 +4503,17 @@ static NSAppleEventDescriptor* aeDescFromJSValue(ExecState* exec, JSValue jsValu
 
 - (NSUInteger)markAllMatchesForText:(NSString *)string caseSensitive:(BOOL)caseFlag highlight:(BOOL)highlight limit:(NSUInteger)limit
 {
+    if (_private->closed)
+        return 0;
+
     return [self countMatchesForText:string caseSensitive:caseFlag highlight:highlight limit:limit markMatches:YES];
 }
 
 - (NSUInteger)countMatchesForText:(NSString *)string caseSensitive:(BOOL)caseFlag highlight:(BOOL)highlight limit:(NSUInteger)limit markMatches:(BOOL)markMatches
 {
+    if (_private->closed)
+        return 0;
+
     WebFrame *frame = [self mainFrame];
     unsigned matchCount = 0;
     do {
@@ -4404,6 +4538,9 @@ static NSAppleEventDescriptor* aeDescFromJSValue(ExecState* exec, JSValue jsValu
 
 - (void)unmarkAllTextMatches
 {
+    if (_private->closed)
+        return;
+
     WebFrame *frame = [self mainFrame];
     do {
         id <WebDocumentView> view = [[frame frameView] documentView];
@@ -4416,6 +4553,9 @@ static NSAppleEventDescriptor* aeDescFromJSValue(ExecState* exec, JSValue jsValu
 
 - (NSArray *)rectsForTextMatches
 {
+    if (_private->closed)
+        return [NSArray array];
+
     NSMutableArray *result = [NSMutableArray array];
     WebFrame *frame = [self mainFrame];
     do {
@@ -4749,10 +4889,10 @@ static NSAppleEventDescriptor* aeDescFromJSValue(ExecState* exec, JSValue jsValu
         Frame* mainFrame = [self _mainCoreFrame];
         if (mainFrame) {
             if (flag) {
-                mainFrame->applyEditingStyleToBodyElement();
+                mainFrame->editor()->applyEditingStyleToBodyElement();
                 // If the WebView is made editable and the selection is empty, set it to something.
                 if (![self selectedDOMRange])
-                    mainFrame->setSelectionFromNone();
+                    mainFrame->selection()->setSelectionFromNone();
             }
         }
     }
@@ -5168,6 +5308,11 @@ static WebFrameView *containingFrameView(NSView *view)
 
 @implementation WebView (WebFileInternal)
 
+static inline uint64_t roundUpToPowerOf2(uint64_t num)
+{
+    return powf(2.0, ceilf(log2f(num)));
+}
+
 + (void)_setCacheModel:(WebCacheModel)cacheModel
 {
     if (s_didSetCacheModel && cacheModel == s_cacheModel)
@@ -5177,9 +5322,7 @@ static WebFrameView *containingFrameView(NSView *view)
     if (!nsurlCacheDirectory)
         nsurlCacheDirectory = NSHomeDirectory();
 
-    // As a fudge factor, use 1000 instead of 1024, in case the reported byte 
-    // count doesn't align exactly to a megabyte boundary.
-    uint64_t memSize = WebMemorySize() / 1024 / 1000;
+    static uint64_t memSize = roundUpToPowerOf2(WebMemorySize() / 1024 / 1024);
     unsigned long long diskFreeSize = WebVolumeFreeSize(nsurlCacheDirectory) / 1024 / 1000;
     NSURLCache *nsurlCache = [NSURLCache sharedURLCache];
 
@@ -5199,10 +5342,10 @@ static WebFrameView *containingFrameView(NSView *view)
         pageCacheCapacity = 0;
 
         // Object cache capacities (in bytes)
-        if (memSize >= 2048)
+        if (memSize >= 4096)
+            cacheTotalCapacity = 128 * 1024 * 1024;
+        else if (memSize >= 2048)
             cacheTotalCapacity = 96 * 1024 * 1024;
-        else if (memSize >= 1536)
-            cacheTotalCapacity = 64 * 1024 * 1024;
         else if (memSize >= 1024)
             cacheTotalCapacity = 32 * 1024 * 1024;
         else if (memSize >= 512)
@@ -5231,10 +5374,10 @@ static WebFrameView *containingFrameView(NSView *view)
             pageCacheCapacity = 0;
 
         // Object cache capacities (in bytes)
-        if (memSize >= 2048)
+        if (memSize >= 4096)
+            cacheTotalCapacity = 128 * 1024 * 1024;
+        else if (memSize >= 2048)
             cacheTotalCapacity = 96 * 1024 * 1024;
-        else if (memSize >= 1536)
-            cacheTotalCapacity = 64 * 1024 * 1024;
         else if (memSize >= 1024)
             cacheTotalCapacity = 32 * 1024 * 1024;
         else if (memSize >= 512)
@@ -5283,10 +5426,10 @@ static WebFrameView *containingFrameView(NSView *view)
         // (Testing indicates that value / MB depends heavily on content and
         // browsing pattern. Even growth above 128MB can have substantial 
         // value / MB for some content / browsing patterns.)
-        if (memSize >= 2048)
+        if (memSize >= 4096)
+            cacheTotalCapacity = 192 * 1024 * 1024;
+        else if (memSize >= 2048)
             cacheTotalCapacity = 128 * 1024 * 1024;
-        else if (memSize >= 1536)
-            cacheTotalCapacity = 96 * 1024 * 1024;
         else if (memSize >= 1024)
             cacheTotalCapacity = 64 * 1024 * 1024;
         else if (memSize >= 512)
@@ -5536,7 +5679,7 @@ static WebFrameView *containingFrameView(NSView *view)
 }
 #endif
 
-#if ENABLE(VIDEO) && USE(GSTREAMER)
+#if ENABLE(GLIB_SUPPORT)
 - (void)_clearGlibLoopObserver
 {
     if (!_private->glibRunLoopObserver)
@@ -5793,6 +5936,11 @@ static void layerSyncRunLoopObserverCallBack(CFRunLoopObserverRef, CFRunLoopActi
 
 - (void)_scheduleCompositingLayerSync
 {
+    CFRunLoopRef currentRunLoop = CFRunLoopGetCurrent();
+
+    // Make sure we wake up the loop or the observer could be delayed until some other source fires.
+    CFRunLoopWakeUp(currentRunLoop);
+
     if (_private->layerSyncRunLoopObserver)
         return;
 
@@ -5808,7 +5956,7 @@ static void layerSyncRunLoopObserverCallBack(CFRunLoopObserverRef, CFRunLoopActi
         kCFRunLoopBeforeWaiting | kCFRunLoopExit, true /* repeats */,
         runLoopOrder, layerSyncRunLoopObserverCallBack, &context);
 
-    CFRunLoopAddObserver(CFRunLoopGetCurrent(), _private->layerSyncRunLoopObserver, kCFRunLoopCommonModes);
+    CFRunLoopAddObserver(currentRunLoop, _private->layerSyncRunLoopObserver, kCFRunLoopCommonModes);
 }
 
 #endif
@@ -5854,7 +6002,7 @@ static void layerSyncRunLoopObserverCallBack(CFRunLoopObserverRef, CFRunLoopActi
 
 #endif
 
-#if ENABLE(VIDEO) && USE(GSTREAMER)
+#if ENABLE(GLIB_SUPPORT)
 
 static void glibContextIterationCallback(CFRunLoopObserverRef, CFRunLoopActivity, void*)
 {
@@ -5883,6 +6031,23 @@ static void glibContextIterationCallback(CFRunLoopObserverRef, CFRunLoopActivity
 
 @end
 
+@implementation WebView (WebViewDeviceOrientation)
+
+- (void)_setDeviceOrientationProvider:(id<WebDeviceOrientationProvider>)deviceOrientationProvider
+{
+    if (_private)
+        _private->m_deviceOrientationProvider = deviceOrientationProvider;
+}
+
+- (id<WebDeviceOrientationProvider>)_deviceOrientationProvider
+{
+    if (_private)
+        return _private->m_deviceOrientationProvider;
+    return nil;
+}
+
+@end
+
 @implementation WebView (WebViewGeolocation)
 
 - (void)_setGeolocationProvider:(id<WebGeolocationProvider>)geolocationProvider
@@ -5937,6 +6102,25 @@ static void glibContextIterationCallback(CFRunLoopObserverRef, CFRunLoopActivity
 
 @end
 
+@implementation WebView (WebViewPrivateNodesFromRect)
+
+- (JSValueRef)_nodesFromRect:(JSContextRef)context forDocument:(JSValueRef)value x:(int)x  y:(int)y top:(unsigned)top right:(unsigned)right bottom:(unsigned)bottom left:(unsigned)left ignoreClipping:(BOOL)ignoreClipping
+{
+    JSLock lock(SilenceAssertionsOnly);
+    ExecState* exec = toJS(context);
+    if (!value)
+        return JSValueMakeUndefined(context);
+    JSValue jsValue = toJS(exec, value);
+    if (!jsValue.inherits(&JSDocument::s_info))
+        return JSValueMakeUndefined(context);
+    JSDocument* jsDocument = static_cast<JSDocument*>(asObject(jsValue));
+    Document* document = jsDocument->impl();
+    RefPtr<NodeList> nodes = document->nodesFromRect(x, y, top, right, bottom, left, ignoreClipping);
+    return toRef(exec, toJS(exec, jsDocument->globalObject(), nodes.get()));
+}
+
+@end
+
 #ifdef BUILDING_ON_LEOPARD
 
 static IMP originalRecursivelyRemoveMailAttributesImp;