9 files changed, 1548 insertions, 0 deletions

diff --git a/Source/WebCore/page/mac/ChromeMac.mm b/Source/WebCore/page/mac/ChromeMac.mm
new file mode 100644
index 0000000..d2ae39d
--- /dev/null
+++ b/Source/WebCore/page/mac/ChromeMac.mm
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
+ *
+ * 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.
+ */
+
+#import "config.h"
+#import "Chrome.h"
+
+#import "BlockExceptions.h"
+#import "ChromeClient.h"
+
+namespace WebCore {
+
+
+void Chrome::focusNSView(NSView* view)
+{
+    BEGIN_BLOCK_OBJC_EXCEPTIONS;
+
+    NSResponder *firstResponder = client()->firstResponder();
+    if (firstResponder == view)
+        return;
+
+    if (![view window] || ![view superview] || ![view acceptsFirstResponder])
+        return;
+
+    client()->makeFirstResponder(view);
+
+    // Setting focus can actually cause a style change which might
+    // remove the view from its superview while it's being made
+    // first responder. This confuses AppKit so we must restore
+    // the old first responder.
+    if (![view superview])
+        client()->makeFirstResponder(firstResponder);
+
+    END_BLOCK_OBJC_EXCEPTIONS;
+}
+
+} // namespace WebCore
diff --git a/Source/WebCore/page/mac/DragControllerMac.mm b/Source/WebCore/page/mac/DragControllerMac.mm
new file mode 100644
index 0000000..05c8e09
--- /dev/null
+++ b/Source/WebCore/page/mac/DragControllerMac.mm
@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2007 Apple Inc.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#import "config.h"
+#import "DragController.h"
+
+#if ENABLE(DRAG_SUPPORT)
+#import "DragData.h"
+#import "Frame.h"
+#import "FrameView.h"
+#import "Page.h"
+
+namespace WebCore {
+
+const int DragController::LinkDragBorderInset = -2;
+
+const int DragController::MaxOriginalImageArea = 1500 * 1500;
+const int DragController::DragIconRightInset = 7;
+const int DragController::DragIconBottomInset = 3;
+
+const float DragController::DragImageAlpha = 0.75f;
+
+bool DragController::isCopyKeyDown()
+{
+    return [[NSApp currentEvent] modifierFlags] & NSAlternateKeyMask;
+}
+    
+DragOperation DragController::dragOperation(DragData* dragData)
+{
+    ASSERT(dragData);
+    if ([NSApp modalWindow] || !dragData->containsURL())
+        return DragOperationNone;
+
+    if (!m_documentUnderMouse || (![[m_page->mainFrame()->view()->getOuterView() window] attachedSheet] 
+        && [dragData->platformData() draggingSource] != m_page->mainFrame()->view()->getOuterView()))
+        return DragOperationCopy;
+
+    return DragOperationNone;
+}
+
+const IntSize& DragController::maxDragImageSize()
+{
+    static const IntSize maxDragImageSize(400, 400);
+    
+    return maxDragImageSize;
+}
+
+void DragController::cleanupAfterSystemDrag()
+{
+    // Drag has ended, dragEnded *should* have been called, however it is possible
+    // for the UIDelegate to take over the drag, and fail to send the appropriate
+    // drag termination event.  As dragEnded just resets drag variables, we just
+    // call it anyway to be on the safe side
+    dragEnded();
+}
+
+} // namespace WebCore
+
+#endif // ENABLE(DRAG_SUPPORT)
diff --git a/Source/WebCore/page/mac/EventHandlerMac.mm b/Source/WebCore/page/mac/EventHandlerMac.mm
new file mode 100644
index 0000000..2d4d86b
--- /dev/null
+++ b/Source/WebCore/page/mac/EventHandlerMac.mm
@@ -0,0 +1,790 @@
+/*
+ * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#include "config.h"
+#include "EventHandler.h"
+
+#include "AXObjectCache.h"
+#include "BlockExceptions.h"
+#include "Chrome.h"
+#include "ChromeClient.h"
+#include "ClipboardMac.h"
+#include "DragController.h"
+#include "EventNames.h"
+#include "FocusController.h"
+#include "Frame.h"
+#include "FrameLoader.h"
+#include "FrameView.h"
+#include "KeyboardEvent.h"
+#include "MouseEventWithHitTestResults.h"
+#include "NotImplemented.h"
+#include "Page.h"
+#include "PlatformKeyboardEvent.h"
+#include "PlatformWheelEvent.h"
+#include "RenderWidget.h"
+#include "RuntimeApplicationChecks.h"
+#include "Scrollbar.h"
+#include "Settings.h"
+#include "WebCoreSystemInterface.h"
+#include <objc/objc-runtime.h>
+#include <wtf/StdLibExtras.h>
+
+#if !(defined(OBJC_API_VERSION) && OBJC_API_VERSION > 0)
+static inline IMP method_setImplementation(Method m, IMP i)
+{
+    IMP oi = m->method_imp;
+    m->method_imp = i;
+    return oi;
+}
+#endif
+
+namespace WebCore {
+
+#if ENABLE(DRAG_SUPPORT)
+const double EventHandler::TextDragDelay = 0.15;
+#endif
+
+static RetainPtr<NSEvent>& currentNSEventSlot()
+{
+    DEFINE_STATIC_LOCAL(RetainPtr<NSEvent>, event, ());
+    return event;
+}
+
+NSEvent *EventHandler::currentNSEvent()
+{
+    return currentNSEventSlot().get();
+}
+
+class CurrentEventScope : public Noncopyable {
+public:
+    CurrentEventScope(NSEvent *);
+    ~CurrentEventScope();
+
+private:
+    RetainPtr<NSEvent> m_savedCurrentEvent;
+#ifndef NDEBUG
+    RetainPtr<NSEvent> m_event;
+#endif
+};
+
+inline CurrentEventScope::CurrentEventScope(NSEvent *event)
+    : m_savedCurrentEvent(currentNSEventSlot())
+#ifndef NDEBUG
+    , m_event(event)
+#endif
+{
+    currentNSEventSlot() = event;
+}
+
+inline CurrentEventScope::~CurrentEventScope()
+{
+    ASSERT(currentNSEventSlot() == m_event);
+    currentNSEventSlot() = m_savedCurrentEvent;
+}
+
+bool EventHandler::wheelEvent(NSEvent *event)
+{
+    Page* page = m_frame->page();
+    if (!page)
+        return false;
+
+    CurrentEventScope scope(event);
+
+    m_useLatchedWheelEventNode = wkIsLatchingWheelEvent(event);
+    
+    PlatformWheelEvent wheelEvent(event, page->chrome()->platformPageClient());
+    handleWheelEvent(wheelEvent);
+
+    return wheelEvent.isAccepted();
+}
+
+PassRefPtr<KeyboardEvent> EventHandler::currentKeyboardEvent() const
+{
+    NSEvent *event = [NSApp currentEvent];
+    if (!event)
+        return 0;
+    switch ([event type]) {
+        case NSKeyDown: {
+            PlatformKeyboardEvent platformEvent(event);
+            platformEvent.disambiguateKeyDownEvent(PlatformKeyboardEvent::RawKeyDown);
+            return KeyboardEvent::create(platformEvent, m_frame->document()->defaultView());
+        }
+        case NSKeyUp:
+            return KeyboardEvent::create(event, m_frame->document()->defaultView());
+        default:
+            return 0;
+    }
+}
+
+bool EventHandler::keyEvent(NSEvent *event)
+{
+    BEGIN_BLOCK_OBJC_EXCEPTIONS;
+
+    ASSERT([event type] == NSKeyDown || [event type] == NSKeyUp);
+
+    CurrentEventScope scope(event);
+    return keyEvent(PlatformKeyboardEvent(event));
+
+    END_BLOCK_OBJC_EXCEPTIONS;
+
+    return false;
+}
+
+void EventHandler::focusDocumentView()
+{
+    Page* page = m_frame->page();
+    if (!page)
+        return;
+
+    if (FrameView* frameView = m_frame->view()) {
+        if (NSView *documentView = frameView->documentView())
+            page->chrome()->focusNSView(documentView);
+    }
+
+    page->focusController()->setFocusedFrame(m_frame);
+}
+
+bool EventHandler::passWidgetMouseDownEventToWidget(const MouseEventWithHitTestResults& event)
+{
+    // Figure out which view to send the event to.
+    RenderObject* target = event.targetNode() ? event.targetNode()->renderer() : 0;
+    if (!target || !target->isWidget())
+        return false;
+    
+    // Double-click events don't exist in Cocoa. Since passWidgetMouseDownEventToWidget will
+    // just pass currentEvent down to the widget, we don't want to call it for events that
+    // don't correspond to Cocoa events.  The mousedown/ups will have already been passed on as
+    // part of the pressed/released handling.
+    return passMouseDownEventToWidget(toRenderWidget(target)->widget());
+}
+
+bool EventHandler::passWidgetMouseDownEventToWidget(RenderWidget* renderWidget)
+{
+    return passMouseDownEventToWidget(renderWidget->widget());
+}
+
+static bool lastEventIsMouseUp()
+{
+    // Many AppKit widgets run their own event loops and consume events while the mouse is down.
+    // When they finish, currentEvent is the mouseUp that they exited on. We need to update
+    // the WebCore state with this mouseUp, which we never saw. This method lets us detect
+    // that state. Handling this was critical when we used AppKit widgets for form elements.
+    // It's not clear in what cases this is helpful now -- it's possible it can be removed. 
+
+    BEGIN_BLOCK_OBJC_EXCEPTIONS;
+    NSEvent *currentEventAfterHandlingMouseDown = [NSApp currentEvent];
+    return EventHandler::currentNSEvent() != currentEventAfterHandlingMouseDown
+        && [currentEventAfterHandlingMouseDown type] == NSLeftMouseUp
+        && [currentEventAfterHandlingMouseDown timestamp] >= [EventHandler::currentNSEvent() timestamp];
+    END_BLOCK_OBJC_EXCEPTIONS;
+
+    return false;
+}
+
+bool EventHandler::passMouseDownEventToWidget(Widget* pWidget)
+{
+    // FIXME: This function always returns true. It should be changed either to return
+    // false in some cases or the return value should be removed.
+    
+    RefPtr<Widget> widget = pWidget;
+
+    if (!widget) {
+        LOG_ERROR("hit a RenderWidget without a corresponding Widget, means a frame is half-constructed");
+        return true;
+    }
+
+    // In WebKit2 we will never have an NSView. Just return early and let the regular event handler machinery take care of
+    // dispatching the event.
+    if (!widget->platformWidget())
+        return false;
+
+    BEGIN_BLOCK_OBJC_EXCEPTIONS;
+    
+    NSView *nodeView = widget->platformWidget();
+    ASSERT([nodeView superview]);
+    NSView *view = [nodeView hitTest:[[nodeView superview] convertPoint:[currentNSEvent() locationInWindow] fromView:nil]];
+    if (!view) {
+        // We probably hit the border of a RenderWidget
+        return true;
+    }
+    
+    Page* page = m_frame->page();
+    if (!page)
+        return true;
+
+    if (page->chrome()->client()->firstResponder() != view) {
+        // Normally [NSWindow sendEvent:] handles setting the first responder.
+        // But in our case, the event was sent to the view representing the entire web page.
+        if ([currentNSEvent() clickCount] <= 1 && [view acceptsFirstResponder] && [view needsPanelToBecomeKey])
+            page->chrome()->client()->makeFirstResponder(view);
+    }
+
+    // We need to "defer loading" while tracking the mouse, because tearing down the
+    // page while an AppKit control is tracking the mouse can cause a crash.
+    
+    // FIXME: In theory, WebCore now tolerates tear-down while tracking the
+    // mouse. We should confirm that, and then remove the deferrsLoading
+    // hack entirely.
+    
+    bool wasDeferringLoading = page->defersLoading();
+    if (!wasDeferringLoading)
+        page->setDefersLoading(true);
+
+    ASSERT(!m_sendingEventToSubview);
+    m_sendingEventToSubview = true;
+    NSView *outerView = widget->getOuterView();
+    widget->beforeMouseDown(outerView, widget.get());
+    [view mouseDown:currentNSEvent()];
+    widget->afterMouseDown(outerView, widget.get());
+    m_sendingEventToSubview = false;
+    
+    if (!wasDeferringLoading)
+        page->setDefersLoading(false);
+
+    // Remember which view we sent the event to, so we can direct the release event properly.
+    m_mouseDownView = view;
+    m_mouseDownWasInSubframe = false;
+    
+    // Many AppKit widgets run their own event loops and consume events while the mouse is down.
+    // When they finish, currentEvent is the mouseUp that they exited on.  We need to update
+    // the EventHandler state with this mouseUp, which we never saw.
+    // If this event isn't a mouseUp, we assume that the mouseUp will be coming later.  There
+    // is a hole here if the widget consumes both the mouseUp and subsequent events.
+    if (lastEventIsMouseUp())
+        m_mousePressed = false;
+
+    END_BLOCK_OBJC_EXCEPTIONS;
+
+    return true;
+}
+    
+// Note that this does the same kind of check as [target isDescendantOf:superview].
+// There are two differences: This is a lot slower because it has to walk the whole
+// tree, and this works in cases where the target has already been deallocated.
+static bool findViewInSubviews(NSView *superview, NSView *target)
+{
+    BEGIN_BLOCK_OBJC_EXCEPTIONS;
+    NSEnumerator *e = [[superview subviews] objectEnumerator];
+    NSView *subview;
+    while ((subview = [e nextObject])) {
+        if (subview == target || findViewInSubviews(subview, target)) {
+            return true;
+        }
+    }
+    END_BLOCK_OBJC_EXCEPTIONS;
+    
+    return false;
+}
+
+NSView *EventHandler::mouseDownViewIfStillGood()
+{
+    // Since we have no way of tracking the lifetime of m_mouseDownView, we have to assume that
+    // it could be deallocated already. We search for it in our subview tree; if we don't find
+    // it, we set it to nil.
+    NSView *mouseDownView = m_mouseDownView;
+    if (!mouseDownView) {
+        return nil;
+    }
+    FrameView* topFrameView = m_frame->view();
+    NSView *topView = topFrameView ? topFrameView->platformWidget() : nil;
+    if (!topView || !findViewInSubviews(topView, mouseDownView)) {
+        m_mouseDownView = nil;
+        return nil;
+    }
+    return mouseDownView;
+}
+
+#if ENABLE(DRAG_SUPPORT)
+bool EventHandler::eventLoopHandleMouseDragged(const MouseEventWithHitTestResults&)
+{
+    NSView *view = mouseDownViewIfStillGood();
+    
+    if (!view)
+        return false;
+    
+    if (!m_mouseDownWasInSubframe) {
+        ASSERT(!m_sendingEventToSubview);
+        m_sendingEventToSubview = true;
+        BEGIN_BLOCK_OBJC_EXCEPTIONS;
+        [view mouseDragged:currentNSEvent()];
+        END_BLOCK_OBJC_EXCEPTIONS;
+        m_sendingEventToSubview = false;
+    }
+    
+    return true;
+}
+#endif // ENABLE(DRAG_SUPPORT)
+    
+bool EventHandler::eventLoopHandleMouseUp(const MouseEventWithHitTestResults&)
+{
+    NSView *view = mouseDownViewIfStillGood();
+    if (!view)
+        return false;
+    
+    if (!m_mouseDownWasInSubframe) {
+        ASSERT(!m_sendingEventToSubview);
+        m_sendingEventToSubview = true;
+        BEGIN_BLOCK_OBJC_EXCEPTIONS;
+        [view mouseUp:currentNSEvent()];
+        END_BLOCK_OBJC_EXCEPTIONS;
+        m_sendingEventToSubview = false;
+    }
+ 
+    return true;
+}
+    
+bool EventHandler::passSubframeEventToSubframe(MouseEventWithHitTestResults& event, Frame* subframe, HitTestResult* hoveredNode)
+{
+    BEGIN_BLOCK_OBJC_EXCEPTIONS;
+
+    switch ([currentNSEvent() type]) {
+        case NSLeftMouseDragged:
+        case NSOtherMouseDragged:
+        case NSRightMouseDragged:
+            // This check is bogus and results in <rdar://6813830>, but removing it breaks a number of
+            // layout tests.
+            if (!m_mouseDownWasInSubframe)
+                return false;
+#if ENABLE(DRAG_SUPPORT)
+            if (subframe->page()->dragController()->didInitiateDrag())
+                return false;
+#endif
+        case NSMouseMoved:
+            // Since we're passing in currentNSEvent() here, we can call
+            // handleMouseMoveEvent() directly, since the save/restore of
+            // currentNSEvent() that mouseMoved() does would have no effect.
+            ASSERT(!m_sendingEventToSubview);
+            m_sendingEventToSubview = true;
+            subframe->eventHandler()->handleMouseMoveEvent(currentPlatformMouseEvent(), hoveredNode);
+            m_sendingEventToSubview = false;
+            return true;
+        
+        case NSLeftMouseDown: {
+            Node* node = event.targetNode();
+            if (!node)
+                return false;
+            RenderObject* renderer = node->renderer();
+            if (!renderer || !renderer->isWidget())
+                return false;
+            Widget* widget = toRenderWidget(renderer)->widget();
+            if (!widget || !widget->isFrameView())
+                return false;
+            if (!passWidgetMouseDownEventToWidget(toRenderWidget(renderer)))
+                return false;
+            m_mouseDownWasInSubframe = true;
+            return true;
+        }
+        case NSLeftMouseUp: {
+            if (!m_mouseDownWasInSubframe)
+                return false;
+            ASSERT(!m_sendingEventToSubview);
+            m_sendingEventToSubview = true;
+            subframe->eventHandler()->handleMouseReleaseEvent(currentPlatformMouseEvent());
+            m_sendingEventToSubview = false;
+            return true;
+        }
+        default:
+            return false;
+    }
+    END_BLOCK_OBJC_EXCEPTIONS;
+
+    return false;
+}
+
+static IMP originalNSScrollViewScrollWheel;
+static bool _nsScrollViewScrollWheelShouldRetainSelf;
+static void selfRetainingNSScrollViewScrollWheel(NSScrollView *, SEL, NSEvent *);
+
+static bool nsScrollViewScrollWheelShouldRetainSelf()
+{
+    ASSERT(isMainThread());
+
+    return _nsScrollViewScrollWheelShouldRetainSelf;
+}
+
+static void setNSScrollViewScrollWheelShouldRetainSelf(bool shouldRetain)
+{
+    ASSERT(isMainThread());
+
+    if (!originalNSScrollViewScrollWheel) {
+        Method method = class_getInstanceMethod(objc_getRequiredClass("NSScrollView"), @selector(scrollWheel:));
+        originalNSScrollViewScrollWheel = method_setImplementation(method, reinterpret_cast<IMP>(selfRetainingNSScrollViewScrollWheel));
+    }
+
+    _nsScrollViewScrollWheelShouldRetainSelf = shouldRetain;
+}
+
+static void selfRetainingNSScrollViewScrollWheel(NSScrollView *self, SEL selector, NSEvent *event)
+{
+    bool shouldRetainSelf = isMainThread() && nsScrollViewScrollWheelShouldRetainSelf();
+
+    if (shouldRetainSelf)
+        [self retain];
+    originalNSScrollViewScrollWheel(self, selector, event);
+    if (shouldRetainSelf)
+        [self release];
+}
+
+bool EventHandler::passWheelEventToWidget(PlatformWheelEvent& wheelEvent, Widget* widget)
+{
+    BEGIN_BLOCK_OBJC_EXCEPTIONS;
+
+    if (!widget)
+        return false;
+
+    NSView* nodeView = widget->platformWidget();
+    if (!nodeView) {
+        // WebKit2 code path.
+        if (!widget->isFrameView())
+            return false;
+
+        return static_cast<FrameView*>(widget)->frame()->eventHandler()->handleWheelEvent(wheelEvent);
+    }
+
+    if ([currentNSEvent() type] != NSScrollWheel || m_sendingEventToSubview) 
+        return false;
+
+    ASSERT(nodeView);
+    ASSERT([nodeView superview]);
+    NSView *view = [nodeView hitTest:[[nodeView superview] convertPoint:[currentNSEvent() locationInWindow] fromView:nil]];
+    if (!view)
+        // We probably hit the border of a RenderWidget
+        return false;
+
+    ASSERT(!m_sendingEventToSubview);
+    m_sendingEventToSubview = true;
+    // Work around <rdar://problem/6806810> which can cause -[NSScrollView scrollWheel:] to
+    // crash if the NSScrollView is released during timer or network callback dispatch
+    // in the nested tracking runloop that -[NSScrollView scrollWheel:] runs.
+    setNSScrollViewScrollWheelShouldRetainSelf(true);
+    [view scrollWheel:currentNSEvent()];
+    setNSScrollViewScrollWheelShouldRetainSelf(false);
+    m_sendingEventToSubview = false;
+    return true;
+            
+    END_BLOCK_OBJC_EXCEPTIONS;
+    return false;
+}
+
+void EventHandler::mouseDown(NSEvent *event)
+{
+    FrameView* v = m_frame->view();
+    if (!v || m_sendingEventToSubview)
+        return;
+
+    BEGIN_BLOCK_OBJC_EXCEPTIONS;
+    
+    m_frame->loader()->resetMultipleFormSubmissionProtection();
+
+    m_mouseDownView = nil;
+    
+    CurrentEventScope scope(event);
+
+    handleMousePressEvent(currentPlatformMouseEvent());
+
+    END_BLOCK_OBJC_EXCEPTIONS;
+}
+
+void EventHandler::mouseDragged(NSEvent *event)
+{
+    FrameView* v = m_frame->view();
+    if (!v || m_sendingEventToSubview)
+        return;
+
+    BEGIN_BLOCK_OBJC_EXCEPTIONS;
+
+    CurrentEventScope scope(event);
+    handleMouseMoveEvent(currentPlatformMouseEvent());
+
+    END_BLOCK_OBJC_EXCEPTIONS;
+}
+
+void EventHandler::mouseUp(NSEvent *event)
+{
+    FrameView* v = m_frame->view();
+    if (!v || m_sendingEventToSubview)
+        return;
+
+    BEGIN_BLOCK_OBJC_EXCEPTIONS;
+
+    CurrentEventScope scope(event);
+
+    // Our behavior here is a little different that Qt. Qt always sends
+    // a mouse release event, even for a double click. To correct problems
+    // in khtml's DOM click event handling we do not send a release here
+    // for a double click. Instead we send that event from FrameView's
+    // handleMouseDoubleClickEvent. Note also that the third click of
+    // a triple click is treated as a single click, but the fourth is then
+    // treated as another double click. Hence the "% 2" below.
+    int clickCount = [event clickCount];
+    if (clickCount > 0 && clickCount % 2 == 0)
+        handleMouseDoubleClickEvent(currentPlatformMouseEvent());
+    else
+        handleMouseReleaseEvent(currentPlatformMouseEvent());
+    
+    m_mouseDownView = nil;
+
+    END_BLOCK_OBJC_EXCEPTIONS;
+}
+
+/*
+ A hack for the benefit of AK's PopUpButton, which uses the Carbon menu manager, which thus
+ eats all subsequent events after it is starts its modal tracking loop.  After the interaction
+ is done, this routine is used to fix things up.  When a mouse down started us tracking in
+ the widget, we post a fake mouse up to balance the mouse down we started with. When a 
+ key down started us tracking in the widget, we post a fake key up to balance things out.
+ In addition, we post a fake mouseMoved to get the cursor in sync with whatever we happen to 
+ be over after the tracking is done.
+ */
+void EventHandler::sendFakeEventsAfterWidgetTracking(NSEvent *initiatingEvent)
+{
+    FrameView* view = m_frame->view();
+    if (!view)
+        return;
+
+    BEGIN_BLOCK_OBJC_EXCEPTIONS;
+
+    m_sendingEventToSubview = false;
+    int eventType = [initiatingEvent type];
+    if (eventType == NSLeftMouseDown || eventType == NSKeyDown) {
+        NSEvent *fakeEvent = nil;
+        if (eventType == NSLeftMouseDown) {
+            fakeEvent = [NSEvent mouseEventWithType:NSLeftMouseUp
+                                           location:[initiatingEvent locationInWindow]
+                                      modifierFlags:[initiatingEvent modifierFlags]
+                                          timestamp:[initiatingEvent timestamp]
+                                       windowNumber:[initiatingEvent windowNumber]
+                                            context:[initiatingEvent context]
+                                        eventNumber:[initiatingEvent eventNumber]
+                                         clickCount:[initiatingEvent clickCount]
+                                           pressure:[initiatingEvent pressure]];
+        
+            [NSApp postEvent:fakeEvent atStart:YES];
+        } else { // eventType == NSKeyDown
+            fakeEvent = [NSEvent keyEventWithType:NSKeyUp
+                                         location:[initiatingEvent locationInWindow]
+                                    modifierFlags:[initiatingEvent modifierFlags]
+                                        timestamp:[initiatingEvent timestamp]
+                                     windowNumber:[initiatingEvent windowNumber]
+                                          context:[initiatingEvent context]
+                                       characters:[initiatingEvent characters] 
+                      charactersIgnoringModifiers:[initiatingEvent charactersIgnoringModifiers] 
+                                        isARepeat:[initiatingEvent isARepeat] 
+                                          keyCode:[initiatingEvent keyCode]];
+            [NSApp postEvent:fakeEvent atStart:YES];
+        }
+        // FIXME: We should really get the current modifierFlags here, but there's no way to poll
+        // them in Cocoa, and because the event stream was stolen by the Carbon menu code we have
+        // no up-to-date cache of them anywhere.
+        fakeEvent = [NSEvent mouseEventWithType:NSMouseMoved
+                                       location:[[view->platformWidget() window] convertScreenToBase:[NSEvent mouseLocation]]
+                                  modifierFlags:[initiatingEvent modifierFlags]
+                                      timestamp:[initiatingEvent timestamp]
+                                   windowNumber:[initiatingEvent windowNumber]
+                                        context:[initiatingEvent context]
+                                    eventNumber:0
+                                     clickCount:0
+                                       pressure:0];
+        [NSApp postEvent:fakeEvent atStart:YES];
+    }
+    
+    END_BLOCK_OBJC_EXCEPTIONS;
+}
+
+void EventHandler::mouseMoved(NSEvent *event)
+{
+    // Reject a mouse moved if the button is down - screws up tracking during autoscroll
+    // These happen because WebKit sometimes has to fake up moved events.
+    if (!m_frame->view() || m_mousePressed || m_sendingEventToSubview)
+        return;
+    
+    BEGIN_BLOCK_OBJC_EXCEPTIONS;
+    CurrentEventScope scope(event);
+    mouseMoved(currentPlatformMouseEvent());
+    END_BLOCK_OBJC_EXCEPTIONS;
+}
+
+static bool frameHasPlatformWidget(Frame* frame)
+{
+    if (FrameView* frameView = frame->view()) {
+        if (frameView->platformWidget())
+            return true;
+    }
+
+    return false;
+}
+
+bool EventHandler::passMousePressEventToSubframe(MouseEventWithHitTestResults& mev, Frame* subframe)
+{
+    // WebKit1 code path.
+    if (frameHasPlatformWidget(m_frame))
+        return passSubframeEventToSubframe(mev, subframe);
+
+    // WebKit2 code path.
+    subframe->eventHandler()->handleMousePressEvent(mev.event());
+    return true;
+}
+
+bool EventHandler::passMouseMoveEventToSubframe(MouseEventWithHitTestResults& mev, Frame* subframe, HitTestResult* hoveredNode)
+{
+    // WebKit1 code path.
+    if (frameHasPlatformWidget(m_frame))
+        return passSubframeEventToSubframe(mev, subframe, hoveredNode);
+
+    // WebKit2 code path.
+    if (m_mouseDownMayStartDrag && !m_mouseDownWasInSubframe)
+        return false;
+    subframe->eventHandler()->handleMouseMoveEvent(mev.event(), hoveredNode);
+    return true;
+}
+
+bool EventHandler::passMouseReleaseEventToSubframe(MouseEventWithHitTestResults& mev, Frame* subframe)
+{
+    // WebKit1 code path.
+    if (frameHasPlatformWidget(m_frame))
+        return passSubframeEventToSubframe(mev, subframe);
+
+    // WebKit2 code path.
+    subframe->eventHandler()->handleMouseReleaseEvent(mev.event());
+    return true;
+}
+
+PlatformMouseEvent EventHandler::currentPlatformMouseEvent() const
+{
+    NSView *windowView = nil;
+    if (Page* page = m_frame->page())
+        windowView = page->chrome()->platformPageClient();
+    return PlatformMouseEvent(currentNSEvent(), windowView);
+}
+
+#if ENABLE(CONTEXT_MENUS)
+bool EventHandler::sendContextMenuEvent(NSEvent *event)
+{
+    Page* page = m_frame->page();
+    if (!page)
+        return false;
+    return sendContextMenuEvent(PlatformMouseEvent(event, page->chrome()->platformPageClient()));
+}
+#endif // ENABLE(CONTEXT_MENUS)
+
+#if ENABLE(DRAG_SUPPORT)
+bool EventHandler::eventMayStartDrag(NSEvent *event)
+{
+    Page* page = m_frame->page();
+    if (!page)
+        return false;
+    return eventMayStartDrag(PlatformMouseEvent(event, page->chrome()->platformPageClient()));
+}
+#endif // ENABLE(DRAG_SUPPORT)
+
+bool EventHandler::eventActivatedView(const PlatformMouseEvent& event) const
+{
+    return m_activationEventNumber == event.eventNumber();
+}
+
+#if ENABLE(DRAG_SUPPORT)
+
+PassRefPtr<Clipboard> EventHandler::createDraggingClipboard() const
+{
+    NSPasteboard *pasteboard = [NSPasteboard pasteboardWithName:NSDragPboard];
+    // Must be done before ondragstart adds types and data to the pboard,
+    // also done for security, as it erases data from the last drag
+    [pasteboard declareTypes:[NSArray array] owner:nil];
+    return ClipboardMac::create(Clipboard::DragAndDrop, pasteboard, ClipboardWritable, m_frame);
+}
+
+#endif
+
+static inline bool isKeyboardOptionTab(KeyboardEvent* event)
+{
+    return event
+        && (event->type() == eventNames().keydownEvent || event->type() == eventNames().keypressEvent)
+        && event->altKey()
+        && event->keyIdentifier() == "U+0009";    
+}
+
+bool EventHandler::invertSenseOfTabsToLinks(KeyboardEvent* event) const
+{
+    return isKeyboardOptionTab(event);
+}
+
+bool EventHandler::tabsToAllControls(KeyboardEvent* event) const
+{
+    Page* page = m_frame->page();
+    if (!page)
+        return false;
+
+    KeyboardUIMode keyboardUIMode = page->chrome()->client()->keyboardUIMode();
+    bool handlingOptionTab = isKeyboardOptionTab(event);
+
+    // If tab-to-links is off, option-tab always highlights all controls
+    if ((keyboardUIMode & KeyboardAccessTabsToLinks) == 0 && handlingOptionTab)
+        return true;
+    
+    // If system preferences say to include all controls, we always include all controls
+    if (keyboardUIMode & KeyboardAccessFull)
+        return true;
+    
+    // Otherwise tab-to-links includes all controls, unless the sense is flipped via option-tab.
+    if (keyboardUIMode & KeyboardAccessTabsToLinks)
+        return !handlingOptionTab;
+    
+    return handlingOptionTab;
+}
+
+bool EventHandler::needsKeyboardEventDisambiguationQuirks() const
+{
+    Document* document = m_frame->document();
+
+    // RSS view needs arrow key keypress events.
+    if (applicationIsSafari() && (document->url().protocolIs("feed") || document->url().protocolIs("feeds")))
+        return true;
+    Settings* settings = m_frame->settings();
+    if (!settings)
+        return false;
+
+#if ENABLE(DASHBOARD_SUPPORT)
+    if (settings->usesDashboardBackwardCompatibilityMode())
+        return true;
+#endif
+        
+    if (settings->needsKeyboardEventDisambiguationQuirks())
+        return true;
+
+    return false;
+}
+
+unsigned EventHandler::accessKeyModifiers()
+{
+    // Control+Option key combinations are usually unused on Mac OS X, but not when VoiceOver is enabled.
+    // So, we use Control in this case, even though it conflicts with Emacs-style key bindings.
+    // See <https://bugs.webkit.org/show_bug.cgi?id=21107> for more detail.
+    if (AXObjectCache::accessibilityEnhancedUserInterfaceEnabled())
+        return PlatformKeyboardEvent::CtrlKey;
+
+    return PlatformKeyboardEvent::CtrlKey | PlatformKeyboardEvent::AltKey;
+}
+
+}
diff --git a/Source/WebCore/page/mac/FrameMac.mm b/Source/WebCore/page/mac/FrameMac.mm
new file mode 100644
index 0000000..d4e4098
--- /dev/null
+++ b/Source/WebCore/page/mac/FrameMac.mm
@@ -0,0 +1,364 @@
+/*
+ * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
+ * Copyright (C) 2006 Alexey Proskuryakov (ap@nypop.com)
+ * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#import "config.h"
+#import "Frame.h"
+
+#import "BlockExceptions.h"
+#import "ColorMac.h"
+#import "Cursor.h"
+#import "DOMInternal.h"
+#import "Event.h"
+#import "FrameLoaderClient.h"
+#import "FrameView.h"
+#import "GraphicsContext.h"
+#import "HTMLNames.h"
+#import "HTMLTableCellElement.h"
+#import "HitTestRequest.h"
+#import "HitTestResult.h"
+#import "KeyboardEvent.h"
+#import "Logging.h"
+#import "MouseEventWithHitTestResults.h"
+#import "Page.h"
+#import "PlatformKeyboardEvent.h"
+#import "PlatformWheelEvent.h"
+#import "RegularExpression.h"
+#import "RenderTableCell.h"
+#import "Scrollbar.h"
+#import "SimpleFontData.h"
+#import "WebCoreViewFactory.h"
+#import "visible_units.h"
+#import <Carbon/Carbon.h>
+#import <wtf/StdLibExtras.h>
+
+@interface NSView (WebCoreHTMLDocumentView)
+- (void)drawSingleRect:(NSRect)rect;
+@end
+ 
+using namespace std;
+
+namespace WebCore {
+
+using namespace HTMLNames;
+
+// Either get cached regexp or build one that matches any of the labels.
+// The regexp we build is of the form:  (STR1|STR2|STRN)
+static RegularExpression* regExpForLabels(NSArray* labels)
+{
+    // All the ObjC calls in this method are simple array and string
+    // calls which we can assume do not raise exceptions
+
+
+    // Parallel arrays that we use to cache regExps.  In practice the number of expressions
+    // that the app will use is equal to the number of locales is used in searching.
+    static const unsigned int regExpCacheSize = 4;
+    static NSMutableArray* regExpLabels = nil;
+    DEFINE_STATIC_LOCAL(Vector<RegularExpression*>, regExps, ());
+    DEFINE_STATIC_LOCAL(RegularExpression, wordRegExp, ("\\w", TextCaseSensitive));
+
+    RegularExpression* result;
+    if (!regExpLabels)
+        regExpLabels = [[NSMutableArray alloc] initWithCapacity:regExpCacheSize];
+    CFIndex cacheHit = [regExpLabels indexOfObject:labels];
+    if (cacheHit != NSNotFound)
+        result = regExps.at(cacheHit);
+    else {
+        String pattern("(");
+        unsigned int numLabels = [labels count];
+        unsigned int i;
+        for (i = 0; i < numLabels; i++) {
+            String label = [labels objectAtIndex:i];
+
+            bool startsWithWordChar = false;
+            bool endsWithWordChar = false;
+            if (label.length() != 0) {
+                startsWithWordChar = wordRegExp.match(label.substring(0, 1)) >= 0;
+                endsWithWordChar = wordRegExp.match(label.substring(label.length() - 1, 1)) >= 0;
+            }
+            
+            if (i != 0)
+                pattern.append("|");
+            // Search for word boundaries only if label starts/ends with "word characters".
+            // If we always searched for word boundaries, this wouldn't work for languages
+            // such as Japanese.
+            if (startsWithWordChar)
+                pattern.append("\\b");
+            pattern.append(label);
+            if (endsWithWordChar)
+                pattern.append("\\b");
+        }
+        pattern.append(")");
+        result = new RegularExpression(pattern, TextCaseInsensitive);
+    }
+
+    // add regexp to the cache, making sure it is at the front for LRU ordering
+    if (cacheHit != 0) {
+        if (cacheHit != NSNotFound) {
+            // remove from old spot
+            [regExpLabels removeObjectAtIndex:cacheHit];
+            regExps.remove(cacheHit);
+        }
+        // add to start
+        [regExpLabels insertObject:labels atIndex:0];
+        regExps.insert(0, result);
+        // trim if too big
+        if ([regExpLabels count] > regExpCacheSize) {
+            [regExpLabels removeObjectAtIndex:regExpCacheSize];
+            RegularExpression* last = regExps.last();
+            regExps.removeLast();
+            delete last;
+        }
+    }
+    return result;
+}
+
+NSString* Frame::searchForLabelsBeforeElement(NSArray* labels, Element* element, size_t* resultDistance, bool* resultIsInCellAbove)
+{
+    RegularExpression* regExp = regExpForLabels(labels);
+    // We stop searching after we've seen this many chars
+    const unsigned int charsSearchedThreshold = 500;
+    // This is the absolute max we search.  We allow a little more slop than
+    // charsSearchedThreshold, to make it more likely that we'll search whole nodes.
+    const unsigned int maxCharsSearched = 600;
+    // If the starting element is within a table, the cell that contains it
+    HTMLTableCellElement* startingTableCell = 0;
+    bool searchedCellAbove = false;
+    
+    if (resultDistance)
+        *resultDistance = notFound;
+    if (resultIsInCellAbove)
+        *resultIsInCellAbove = false;
+
+    // walk backwards in the node tree, until another element, or form, or end of tree
+    unsigned lengthSearched = 0;
+    Node* n;
+    for (n = element->traversePreviousNode();
+         n && lengthSearched < charsSearchedThreshold;
+         n = n->traversePreviousNode())
+    {
+        if (n->hasTagName(formTag)
+            || (n->isHTMLElement() && static_cast<Element*>(n)->isFormControlElement()))
+        {
+            // We hit another form element or the start of the form - bail out
+            break;
+        } else if (n->hasTagName(tdTag) && !startingTableCell) {
+            startingTableCell = static_cast<HTMLTableCellElement*>(n);
+        } else if (n->hasTagName(trTag) && startingTableCell) {
+            NSString* result = searchForLabelsAboveCell(regExp, startingTableCell, resultDistance);
+            if (result && [result length] > 0) {
+                if (resultIsInCellAbove)
+                    *resultIsInCellAbove = true;
+                return result;
+            }
+            searchedCellAbove = true;
+        } else if (n->isTextNode() && n->renderer() && n->renderer()->style()->visibility() == VISIBLE) {
+            // For each text chunk, run the regexp
+            String nodeString = n->nodeValue();
+            // add 100 for slop, to make it more likely that we'll search whole nodes
+            if (lengthSearched + nodeString.length() > maxCharsSearched)
+                nodeString = nodeString.right(charsSearchedThreshold - lengthSearched);
+            int pos = regExp->searchRev(nodeString);
+            if (pos >= 0) {
+                if (resultDistance)
+                    *resultDistance = lengthSearched;
+                return nodeString.substring(pos, regExp->matchedLength());
+            }
+            lengthSearched += nodeString.length();
+        }
+    }
+
+    // If we started in a cell, but bailed because we found the start of the form or the
+    // previous element, we still might need to search the row above us for a label.
+    if (startingTableCell && !searchedCellAbove) {
+        NSString* result = searchForLabelsAboveCell(regExp, startingTableCell, resultDistance);
+        if (result && [result length] > 0) {
+            if (resultIsInCellAbove)
+                *resultIsInCellAbove = true;
+            return result;
+        }
+    }
+    
+    return nil;
+}
+
+static NSString *matchLabelsAgainstString(NSArray *labels, const String& stringToMatch)
+{
+    if (stringToMatch.isEmpty())
+        return nil;
+    
+    String mutableStringToMatch = stringToMatch;
+    
+    // Make numbers and _'s in field names behave like word boundaries, e.g., "address2"
+    replace(mutableStringToMatch, RegularExpression("\\d", TextCaseSensitive), " ");
+    mutableStringToMatch.replace('_', ' ');
+    
+    RegularExpression* regExp = regExpForLabels(labels);
+    // Use the largest match we can find in the whole string
+    int pos;
+    int length;
+    int bestPos = -1;
+    int bestLength = -1;
+    int start = 0;
+    do {
+        pos = regExp->match(mutableStringToMatch, start);
+        if (pos != -1) {
+            length = regExp->matchedLength();
+            if (length >= bestLength) {
+                bestPos = pos;
+                bestLength = length;
+            }
+            start = pos + 1;
+        }
+    } while (pos != -1);
+    
+    if (bestPos != -1)
+        return mutableStringToMatch.substring(bestPos, bestLength);
+    return nil;
+}
+
+NSString* Frame::matchLabelsAgainstElement(NSArray* labels, Element* element)
+{
+    // Match against the name element, then against the id element if no match is found for the name element.
+    // See 7538330 for one popular site that benefits from the id element check.
+    // FIXME: This code is mirrored in Frame.cpp. It would be nice to make the Mac code call the platform-agnostic
+    // code, which would require converting the NSArray of NSStrings to a Vector of Strings somewhere along the way.
+    String resultFromNameAttribute = matchLabelsAgainstString(labels, element->getAttribute(nameAttr));
+    if (!resultFromNameAttribute.isEmpty())
+        return resultFromNameAttribute;
+    
+    return matchLabelsAgainstString(labels, element->getAttribute(idAttr));
+}
+
+NSImage* Frame::imageFromRect(NSRect rect) const
+{
+    NSView* view = m_view->documentView();
+    if (!view)
+        return nil;
+    if (![view respondsToSelector:@selector(drawSingleRect:)])
+        return nil;
+    
+    PaintBehavior oldPaintBehavior = m_view->paintBehavior();
+    m_view->setPaintBehavior(oldPaintBehavior | PaintBehaviorFlattenCompositingLayers);
+
+    BEGIN_BLOCK_OBJC_EXCEPTIONS;
+    
+    NSRect bounds = [view bounds];
+    
+    // Round image rect size in window coordinate space to avoid pixel cracks at HiDPI (4622794)
+    rect = [view convertRect:rect toView:nil];
+    rect.size.height = roundf(rect.size.height);
+    rect.size.width = roundf(rect.size.width);
+    rect = [view convertRect:rect fromView:nil];
+    
+    NSImage* resultImage = [[[NSImage alloc] initWithSize:rect.size] autorelease];
+
+    if (rect.size.width != 0 && rect.size.height != 0) {
+        [resultImage setFlipped:YES];
+        [resultImage lockFocus];
+        CGContextRef context = (CGContextRef)[[NSGraphicsContext currentContext] graphicsPort];
+        CGContextSaveGState(context);
+        CGContextTranslateCTM(context, bounds.origin.x - rect.origin.x, bounds.origin.y - rect.origin.y);
+
+        // Note: Must not call drawRect: here, because drawRect: assumes that it's called from AppKit's
+        // display machinery. It calls getRectsBeingDrawn:count:, which can only be called inside
+        // when a real AppKit display is underway.
+        [view drawSingleRect:rect];
+
+        CGContextRestoreGState(context);
+        [resultImage unlockFocus];
+        [resultImage setFlipped:NO];
+    }
+
+    m_view->setPaintBehavior(oldPaintBehavior);
+    return resultImage;
+
+    END_BLOCK_OBJC_EXCEPTIONS;
+    
+    m_view->setPaintBehavior(oldPaintBehavior);
+    return nil;
+}
+
+NSImage* Frame::selectionImage(bool forceBlackText) const
+{
+    m_view->setPaintBehavior(PaintBehaviorSelectionOnly | (forceBlackText ? PaintBehaviorForceBlackText : 0));
+    m_doc->updateLayout();
+    NSImage* result = imageFromRect(selection()->bounds());
+    m_view->setPaintBehavior(PaintBehaviorNormal);
+    return result;
+}
+
+NSImage* Frame::snapshotDragImage(Node* node, NSRect* imageRect, NSRect* elementRect) const
+{
+    RenderObject* renderer = node->renderer();
+    if (!renderer)
+        return nil;
+    
+    renderer->updateDragState(true);    // mark dragged nodes (so they pick up the right CSS)
+    m_doc->updateLayout();        // forces style recalc - needed since changing the drag state might
+                                        // imply new styles, plus JS could have changed other things
+    IntRect topLevelRect;
+    NSRect paintingRect = renderer->paintingRootRect(topLevelRect);
+
+    m_view->setNodeToDraw(node);              // invoke special sub-tree drawing mode
+    NSImage* result = imageFromRect(paintingRect);
+    renderer->updateDragState(false);
+    m_doc->updateLayout();
+    m_view->setNodeToDraw(0);
+
+    if (elementRect)
+        *elementRect = topLevelRect;
+    if (imageRect)
+        *imageRect = paintingRect;
+    return result;
+}
+
+DragImageRef Frame::nodeImage(Node* node)
+{
+    RenderObject* renderer = node->renderer();
+    if (!renderer)
+        return nil;
+
+    m_doc->updateLayout(); // forces style recalc
+
+    IntRect topLevelRect;
+    NSRect paintingRect = renderer->paintingRootRect(topLevelRect);
+
+    m_view->setNodeToDraw(node); // invoke special sub-tree drawing mode
+    NSImage* result = imageFromRect(paintingRect);
+    m_view->setNodeToDraw(0);
+
+    return result;
+}
+
+DragImageRef Frame::dragImageForSelection()
+{
+    if (!selection()->isRange())
+        return nil;
+    return selectionImage();
+}
+
+} // namespace WebCore
diff --git a/Source/WebCore/page/mac/PageMac.cpp b/Source/WebCore/page/mac/PageMac.cpp
new file mode 100644
index 0000000..7386eea
--- /dev/null
+++ b/Source/WebCore/page/mac/PageMac.cpp
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2008 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1.  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ * 2.  Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
+ *     its contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "DocumentLoader.h"
+#include "Frame.h"
+#include "FrameLoader.h"
+#include "FrameTree.h"
+#include "Page.h"
+
+namespace WebCore {
+
+void Page::addSchedulePair(PassRefPtr<SchedulePair> prpPair)
+{
+    RefPtr<SchedulePair> pair = prpPair;
+
+    if (!m_scheduledRunLoopPairs)
+        m_scheduledRunLoopPairs.set(new SchedulePairHashSet);
+    m_scheduledRunLoopPairs->add(pair);
+
+#ifndef BUILDING_ON_TIGER
+    for (Frame* frame = m_mainFrame.get(); frame; frame = frame->tree()->traverseNext()) {
+        if (DocumentLoader* documentLoader = frame->loader()->documentLoader())
+            documentLoader->schedule(pair.get());
+        if (DocumentLoader* documentLoader = frame->loader()->provisionalDocumentLoader())
+            documentLoader->schedule(pair.get());
+    }
+#endif
+
+    // FIXME: make SharedTimerMac use these SchedulePairs.
+}
+
+void Page::removeSchedulePair(PassRefPtr<SchedulePair> prpPair)
+{
+    ASSERT(m_scheduledRunLoopPairs);
+    if (!m_scheduledRunLoopPairs)
+        return;
+
+    RefPtr<SchedulePair> pair = prpPair;
+    m_scheduledRunLoopPairs->remove(pair);
+
+#ifndef BUILDING_ON_TIGER
+    for (Frame* frame = m_mainFrame.get(); frame; frame = frame->tree()->traverseNext()) {
+        if (DocumentLoader* documentLoader = frame->loader()->documentLoader())
+            documentLoader->unschedule(pair.get());
+        if (DocumentLoader* documentLoader = frame->loader()->provisionalDocumentLoader())
+            documentLoader->unschedule(pair.get());
+    }
+#endif
+}
+
+} // namespace
diff --git a/Source/WebCore/page/mac/WebCoreFrameView.h b/Source/WebCore/page/mac/WebCoreFrameView.h
new file mode 100644
index 0000000..b76350d
--- /dev/null
+++ b/Source/WebCore/page/mac/WebCoreFrameView.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2003, 2008 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#include "ScrollTypes.h"
+
+namespace WebCore {
+    class Frame;
+}
+
+@protocol WebCoreFrameScrollView
+- (void)setScrollingModes:(WebCore::ScrollbarMode)hMode vertical:(WebCore::ScrollbarMode)vMode andLock:(BOOL)lock;
+- (void)scrollingModes:(WebCore::ScrollbarMode*)hMode vertical:(WebCore::ScrollbarMode*)vMode;
+- (void)setScrollBarsSuppressed:(BOOL)suppressed repaintOnUnsuppress:(BOOL)repaint;
+- (void)setScrollOrigin:(NSPoint)origin updatePosition:(BOOL)updatePosition;
+- (NSPoint)scrollOrigin;
+@end
+
+@protocol WebCoreFrameView
+- (WebCore::Frame*)_web_frame;
+@end
diff --git a/Source/WebCore/page/mac/WebCoreKeyboardUIMode.h b/Source/WebCore/page/mac/WebCoreKeyboardUIMode.h
new file mode 100644
index 0000000..187cf09
--- /dev/null
+++ b/Source/WebCore/page/mac/WebCoreKeyboardUIMode.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2003 Apple Computer, Inc.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#ifndef WebCoreKeyboardUIMode_h
+#define WebCoreKeyboardUIMode_h
+
+namespace WebCore {
+
+    enum KeyboardUIMode {
+        KeyboardAccessDefault     = 0x00000000,
+        KeyboardAccessFull        = 0x00000001,
+        // this flag may be or'ed with either of the two above
+        KeyboardAccessTabsToLinks = 0x10000000
+    };
+
+}
+
+#endif
diff --git a/Source/WebCore/page/mac/WebCoreViewFactory.h b/Source/WebCore/page/mac/WebCoreViewFactory.h
new file mode 100644
index 0000000..7af75cb
--- /dev/null
+++ b/Source/WebCore/page/mac/WebCoreViewFactory.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2003, 2005, 2009, 2010 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+@class WebCoreTextMarker;
+@class WebCoreTextMarkerRange;
+
+@protocol WebCoreViewFactory
+
+- (BOOL)objectIsTextMarker:(id)object;
+- (BOOL)objectIsTextMarkerRange:(id)object;
+
+- (WebCoreTextMarker *)textMarkerWithBytes:(const void *)bytes length:(size_t)length;
+- (BOOL)getBytes:(void *)bytes fromTextMarker:(WebCoreTextMarker *)textMarker length:(size_t)length;
+
+- (WebCoreTextMarkerRange *)textMarkerRangeWithStart:(WebCoreTextMarker *)start end:(WebCoreTextMarker *)end;
+- (WebCoreTextMarker *)startOfTextMarkerRange:(WebCoreTextMarkerRange *)range;
+- (WebCoreTextMarker *)endOfTextMarkerRange:(WebCoreTextMarkerRange *)range;
+
+- (void)accessibilityHandleFocusChanged;
+- (CGRect)accessibilityConvertScreenRect:(CGRect)bounds;
+
+- (AXUIElementRef)AXUIElementForElement:(id)element;
+- (void)unregisterUniqueIdForUIElement:(id)element;
+
+@end
+
+@interface WebCoreViewFactory : NSObject
++ (WebCoreViewFactory *)sharedFactory;
+@end
+
+@interface WebCoreViewFactory (SubclassResponsibility) <WebCoreViewFactory>
+@end
diff --git a/Source/WebCore/page/mac/WebCoreViewFactory.m b/Source/WebCore/page/mac/WebCoreViewFactory.m
new file mode 100644
index 0000000..5398989
--- /dev/null
+++ b/Source/WebCore/page/mac/WebCoreViewFactory.m
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2003 Apple Computer, Inc.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+#include "config.h"
+#import "WebCoreViewFactory.h"
+#import <wtf/Assertions.h>
+
+@implementation WebCoreViewFactory
+
+static WebCoreViewFactory *sharedFactory;
+
++ (WebCoreViewFactory *)sharedFactory
+{
+    return sharedFactory;
+}
+
+- init
+{
+    [super init];
+    
+    ASSERT(!sharedFactory);
+    sharedFactory = [self retain];
+    
+    return self;
+}
+
+@end