/*

 * Copyright (C) 2006 Zack Rusin <zack@kde.org>

 *

 * 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 "ClipboardQt.h"

#include "Cursor.h"

#include "Document.h"

#include "EventNames.h"

#include "FloatPoint.h"

#include "FocusController.h"

#include "Frame.h"

#include "FrameLoader.h"

#include "FrameTree.h"

#include "FrameView.h"

#include "HTMLFrameSetElement.h"

#include "HitTestRequest.h"

#include "HitTestResult.h"

#include "KeyboardEvent.h"

#include "MouseEventWithHitTestResults.h"

#include "Page.h"

#include "PlatformKeyboardEvent.h"

#include "PlatformScrollBar.h"

#include "PlatformWheelEvent.h"

#include "RenderWidget.h"

#include "NotImplemented.h"

namespace WebCore {

using namespace EventNames;

static bool isKeyboardOptionTab(KeyboardEvent* event)

{

    return event

        && (event->type() == keydownEvent || event->type() == keypressEvent)

        && event->altKey()

        && event->keyIdentifier() == "U+0009";

}

bool EventHandler::invertSenseOfTabsToLinks(KeyboardEvent* event) const

{

    return isKeyboardOptionTab(event);

}

bool EventHandler::tabsToAllControls(KeyboardEvent* event) const

{

    bool handlingOptionTab = isKeyboardOptionTab(event);

    return handlingOptionTab;

}

void EventHandler::focusDocumentView()

{

    Page* page = m_frame->page();

    if (page)

        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;

    return passMouseDownEventToWidget(static_cast<RenderWidget*>(target)->widget());

}

bool EventHandler::passWidgetMouseDownEventToWidget(RenderWidget* renderWidget)

{

    return passMouseDownEventToWidget(renderWidget->widget());

}

bool EventHandler::passMouseDownEventToWidget(Widget* widget)

{

    notImplemented();

    return false;

}

bool EventHandler::eventActivatedView(const PlatformMouseEvent&) const

{

    //Qt has an activation event which is sent independently

    //   of mouse event so this thing will be a snafu to implement

    //   correctly

    return false;

}

bool EventHandler::passSubframeEventToSubframe(MouseEventWithHitTestResults& event, Frame* subframe, HitTestResult*)

{

    Q_ASSERT(subframe);

    PlatformMouseEvent ev = event.event();

    switch(ev.eventType()) {

    case MouseEventMoved:

        return subframe->eventHandler()->handleMouseMoveEvent(ev);

    case MouseEventPressed:

        return subframe->eventHandler()->handleMousePressEvent(ev);

    case MouseEventReleased:

        return subframe->eventHandler()->handleMouseReleaseEvent(ev);

    case MouseEventScroll:

        return subframe->eventHandler()->handleMouseMoveEvent(ev);

    default:

      return false;

    }

}

bool EventHandler::passWheelEventToWidget(PlatformWheelEvent& event, Widget* widget)

{

    Q_ASSERT(widget);

    if (!widget->isFrameView())

        return false;

    return static_cast<FrameView*>(widget)->frame()->eventHandler()->handleWheelEvent(event);

}

Clipboard* EventHandler::createDraggingClipboard() const

{

    return new ClipboardQt(ClipboardWritable, true);

}

bool EventHandler::passMousePressEventToSubframe(MouseEventWithHitTestResults& mev, Frame* subframe)

{

    return passSubframeEventToSubframe(mev, subframe);

}

bool EventHandler::passMouseMoveEventToSubframe(MouseEventWithHitTestResults& mev, Frame* subframe, HitTestResult* hoveredNode)

{

    return passSubframeEventToSubframe(mev, subframe, hoveredNode);

}

bool EventHandler::passMouseReleaseEventToSubframe(MouseEventWithHitTestResults& mev, Frame* subframe)

{

    return passSubframeEventToSubframe(mev, subframe);

}

bool EventHandler::passMousePressEventToScrollbar(MouseEventWithHitTestResults& event, PlatformScrollbar* scrollbar)

{

    Q_ASSERT(scrollbar);

    return scrollbar->handleMousePressEvent(event.event());

}

}