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+/*
+ * Copyright (C) 2006, 2007, 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 "config.h"
+#include "EventHandler.h"
+
+#include "Cursor.h"
+#include "FloatPoint.h"
+#include "FocusController.h"
+#include "FrameView.h"
+#include "Frame.h"
+#include "HitTestRequest.h"
+#include "HitTestResult.h"
+#include "MouseEventWithHitTestResults.h"
+#include "Page.h"
+#include "PlatformKeyboardEvent.h"
+#include "PlatformScrollBar.h"
+#include "PlatformWheelEvent.h"
+#include "RenderWidget.h"
+#include "SelectionController.h"
+#include "NotImplemented.h"
+
+#if PLATFORM(WIN)
+#include "ClipboardWin.h"
+#include "WCDataObject.h"
+#endif
+
+namespace WebCore {
+
+unsigned EventHandler::s_accessKeyModifiers = PlatformKeyboardEvent::AltKey;
+
+const double EventHandler::TextDragDelay = 0.0;
+
+bool EventHandler::passMousePressEventToSubframe(MouseEventWithHitTestResults& mev, Frame* subframe)
+{
+ // If we're clicking into a frame that is selected, the frame will appear
+ // greyed out even though we're clicking on the selection. This looks
+ // really strange (having the whole frame be greyed out), so we deselect the
+ // selection.
+ IntPoint p = m_frame->view()->windowToContents(mev.event().pos());
+ if (m_frame->selection()->contains(p)) {
+ VisiblePosition visiblePos(
+ mev.targetNode()->renderer()->positionForPoint(mev.localPoint()));
+ Selection newSelection(visiblePos);
+ if (m_frame->shouldChangeSelection(newSelection))
+ m_frame->selection()->setSelection(newSelection);
+ }
+
+ subframe->eventHandler()->handleMousePressEvent(mev.event());
+ return true;
+}
+
+bool EventHandler::passMouseMoveEventToSubframe(MouseEventWithHitTestResults& mev, Frame* subframe, HitTestResult* hoveredNode)
+{
+ if (m_mouseDownMayStartDrag && !m_mouseDownWasInSubframe)
+ return false;
+ subframe->eventHandler()->handleMouseMoveEvent(mev.event(), hoveredNode);
+ return true;
+}
+
+bool EventHandler::passMouseReleaseEventToSubframe(MouseEventWithHitTestResults& mev, Frame* subframe)
+{
+ subframe->eventHandler()->handleMouseReleaseEvent(mev.event());
+ return true;
+}
+
+bool EventHandler::passWheelEventToWidget(PlatformWheelEvent& wheelEvent, Widget* widget)
+{
+ if (!widget) {
+ // We can sometimes get a null widget! EventHandlerMac handles a null
+ // widget by returning false, so we do the same.
+ return false;
+ }
+
+ if (!widget->isFrameView()) {
+ // Probably a plugin widget. They will receive the event via an
+ // EventTargetNode dispatch when this returns false.
+ return false;
+ }
+
+ return static_cast<FrameView*>(widget)->frame()->eventHandler()->handleWheelEvent(wheelEvent);
+}
+
+bool EventHandler::passMousePressEventToScrollbar(MouseEventWithHitTestResults& mev, PlatformScrollbar* scrollbar)
+{
+ if (!scrollbar || !scrollbar->isEnabled())
+ return false;
+ return scrollbar->handleMousePressEvent(mev.event());
+}
+
+bool EventHandler::passWidgetMouseDownEventToWidget(const MouseEventWithHitTestResults& event)
+{
+ // Figure out which view to send the event to.
+ if (!event.targetNode() || !event.targetNode()->renderer() || !event.targetNode()->renderer()->isWidget())
+ return false;
+
+ return passMouseDownEventToWidget(static_cast<RenderWidget*>(event.targetNode()->renderer())->widget());
+}
+
+bool EventHandler::passMouseDownEventToWidget(Widget* widget)
+{
+ notImplemented();
+ return false;
+}
+
+bool EventHandler::tabsToAllControls(KeyboardEvent*) const
+{
+ return true;
+}
+
+bool EventHandler::eventActivatedView(const PlatformMouseEvent& event) const
+{
+ // TODO(darin): Apple's EventHandlerWin.cpp does the following:
+ // return event.activatedWebView();
+ return false;
+}
+
+PassRefPtr<Clipboard> EventHandler::createDraggingClipboard() const
+{
+#if PLATFORM(WIN)
+ COMPtr<WCDataObject> dataObject;
+ WCDataObject::createInstance(&dataObject);
+ return ClipboardWin::create(true, dataObject.get(), ClipboardWritable);
+#else
+ return PassRefPtr<Clipboard>(0);
+#endif
+}
+
+void EventHandler::focusDocumentView()
+{
+ Page* page = m_frame->page();
+ if (!page)
+ return;
+ page->focusController()->setFocusedFrame(m_frame);
+}
+
+bool EventHandler::passWidgetMouseDownEventToWidget(RenderWidget* renderWidget)
+{
+ return passMouseDownEventToWidget(renderWidget->widget());
+}
+
+}