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/*
* Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
* Copyright (C) 2008 Google Inc.
*
* 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 "ChromiumDataObject.h"
#include "ClipboardChromium.h"
#include "Cursor.h"
#include "FloatPoint.h"
#include "FocusController.h"
#include "Frame.h"
#include "FrameSelection.h"
#include "FrameView.h"
#include "HitTestRequest.h"
#include "HitTestResult.h"
#include "MouseEventWithHitTestResults.h"
#include "NotImplemented.h"
#include "Page.h"
#include "PlatformKeyboardEvent.h"
#include "PlatformWheelEvent.h"
#include "RenderWidget.h"
namespace WebCore {
#if OS(DARWIN)
const double EventHandler::TextDragDelay = 0.15;
#else
const double EventHandler::TextDragDelay = 0.0;
#endif
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().position());
if (m_frame->selection()->contains(p)) {
VisiblePosition visiblePos(
mev.targetNode()->renderer()->positionForPoint(mev.localPoint()));
VisibleSelection newSelection(visiblePos);
if (m_frame->selection()->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(const PlatformWheelEvent& wheelEvent, Widget* widget)
{
// We can sometimes get a null widget! EventHandlerMac handles a null
// widget by returning false, so we do the same.
if (!widget)
return false;
// If not a FrameView, then probably a plugin widget. Those will receive
// the event via an EventTargetNode dispatch when this returns false.
if (!widget->isFrameView())
return false;
return static_cast<FrameView*>(widget)->frame()->eventHandler()->handleWheelEvent(wheelEvent);
}
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(toRenderWidget(event.targetNode()->renderer())->widget());
}
bool EventHandler::passMouseDownEventToWidget(Widget* widget)
{
notImplemented();
return false;
}
bool EventHandler::tabsToAllFormControls(KeyboardEvent*) const
{
return true;
}
bool EventHandler::eventActivatedView(const PlatformMouseEvent& event) const
{
// FIXME: EventHandlerWin.cpp does the following:
// return event.activatedWebView();
return false;
}
PassRefPtr<Clipboard> EventHandler::createDraggingClipboard() const
{
RefPtr<ChromiumDataObject> dataObject = ChromiumDataObject::create();
return ClipboardChromium::create(Clipboard::DragAndDrop, dataObject.get(), ClipboardWritable, m_frame);
}
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());
}
unsigned EventHandler::accessKeyModifiers()
{
#if OS(DARWIN)
return PlatformEvent::CtrlKey | PlatformEvent::AltKey;
#else
return PlatformEvent::AltKey;
#endif
}
#if OS(UNIX) && !OS(DARWIN)
// GTK+ must scroll horizontally if the mouse pointer is on top of the
// horizontal scrollbar while scrolling with the wheel.
// This code comes from gtk/EventHandlerGtk.cpp.
bool EventHandler::shouldTurnVerticalTicksIntoHorizontal(const HitTestResult& result, const PlatformWheelEvent& event) const
{
return !event.hasPreciseScrollingDeltas() && result.scrollbar() && result.scrollbar()->orientation() == HorizontalScrollbar;
}
#endif
} // namespace WebCore
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