/*

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

 * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.

 * 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. 

 */

#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 "NotImplemented.h"

#include "Page.h"

#include "PlatformKeyboardEvent.h"

#include "PlatformWheelEvent.h"

#include "RenderWidget.h"

#include "Scrollbar.h"

QT_BEGIN_NAMESPACE

Q_GUI_EXPORT extern bool qt_tab_all_widgets; // from qapplication.cpp

QT_END_NAMESPACE

namespace WebCore {

#if defined(Q_WS_MAC)

const double EventHandler::TextDragDelay = 0.15;

#else

const double EventHandler::TextDragDelay = 0.0;

#endif

static 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

{

    return (isKeyboardOptionTab(event) ? !qt_tab_all_widgets : qt_tab_all_widgets);

}

void EventHandler::focusDocumentView()

{

    Page* page = m_frame->page();

    if (!page)

        return;

    page->focusController()->setFocusedFrame(m_frame);

}

bool EventHandler::passWidgetMouseDownEventToWidget(const MouseEventWithHitTestResults&)

{

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

{

    Q_ASSERT(widget);

    if (!widget->isFrameView())

        return false;

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

}

PassRefPtr<Clipboard> EventHandler::createDraggingClipboard() const

{

    return ClipboardQt::create(ClipboardWritable, true);

}

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

{

    subframe->eventHandler()->handleMousePressEvent(mev.event());

    return true;

}

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

{

    subframe->eventHandler()->handleMouseMoveEvent(mev.event(), hoveredNode);

    return true;

}

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

{

    subframe->eventHandler()->handleMouseReleaseEvent(mev.event());

    return true;

}

unsigned EventHandler::accessKeyModifiers()

{

#if OS(DARWIN)

    return PlatformKeyboardEvent::CtrlKey | PlatformKeyboardEvent::AltKey;

#else

    return PlatformKeyboardEvent::AltKey;

#endif

}

}