/*

 * Copyright (C) 2009 Google 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:

 *

 *     * Redistributions of source code must retain the above copyright

 * notice, this list of conditions and the following disclaimer.

 *     * 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.

 *     * Neither the name of Google Inc. 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT

 * OWNER 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 "WebPopupMenuImpl.h"

#include "Cursor.h"

#include "FramelessScrollView.h"

#include "FrameView.h"

#include "IntRect.h"

#include "PlatformContextSkia.h"

#include "PlatformKeyboardEvent.h"

#include "PlatformMouseEvent.h"

#include "PlatformWheelEvent.h"

#include "SkiaUtils.h"

#include "WebInputEvent.h"

#include "WebInputEventConversion.h"

#include "WebRect.h"

#include "WebWidgetClient.h"

#include <skia/ext/platform_canvas.h>

using namespace WebCore;

namespace WebKit {

// WebPopupMenu ---------------------------------------------------------------

WebPopupMenu* WebPopupMenu::create(WebWidgetClient* client)

{

    // Pass the WebPopupMenuImpl's self-reference to the caller.

    return adoptRef(new WebPopupMenuImpl(client)).leakRef();

}

// WebWidget ------------------------------------------------------------------

WebPopupMenuImpl::WebPopupMenuImpl(WebWidgetClient* client)

    : m_client(client)

    , m_widget(0)

{

    // set to impossible point so we always get the first mouse pos

    m_lastMousePosition = WebPoint(-1, -1);

}

WebPopupMenuImpl::~WebPopupMenuImpl()

{

    if (m_widget)

        m_widget->setClient(0);

}

void WebPopupMenuImpl::Init(FramelessScrollView* widget, const WebRect& bounds)

{

    m_widget = widget;

    m_widget->setClient(this);

    if (m_client) {

        m_client->setWindowRect(bounds);

        m_client->show(WebNavigationPolicy());  // Policy is ignored

    }

}

void WebPopupMenuImpl::MouseMove(const WebMouseEvent& event)

{

    // don't send mouse move messages if the mouse hasn't moved.

    if (event.x != m_lastMousePosition.x || event.y != m_lastMousePosition.y) {

        m_lastMousePosition = WebPoint(event.x, event.y);

        m_widget->handleMouseMoveEvent(PlatformMouseEventBuilder(m_widget, event));

    }

}

void WebPopupMenuImpl::MouseLeave(const WebMouseEvent& event)

{

    m_widget->handleMouseMoveEvent(PlatformMouseEventBuilder(m_widget, event));

}

void WebPopupMenuImpl::MouseDown(const WebMouseEvent& event)

{

    m_widget->handleMouseDownEvent(PlatformMouseEventBuilder(m_widget, event));

}

void WebPopupMenuImpl::MouseUp(const WebMouseEvent& event)

{

    mouseCaptureLost();

    m_widget->handleMouseReleaseEvent(PlatformMouseEventBuilder(m_widget, event));

}

void WebPopupMenuImpl::MouseWheel(const WebMouseWheelEvent& event)

{

    m_widget->handleWheelEvent(PlatformWheelEventBuilder(m_widget, event));

}

bool WebPopupMenuImpl::KeyEvent(const WebKeyboardEvent& event)

{

    return m_widget->handleKeyEvent(PlatformKeyboardEventBuilder(event));

}

// WebWidget -------------------------------------------------------------------

void WebPopupMenuImpl::close()

{

    if (m_widget)

        m_widget->hide();

    m_client = 0;

    deref();  // Balances ref() from WebWidget::Create

}

void WebPopupMenuImpl::resize(const WebSize& newSize)

{

    if (m_size == newSize)

        return;

    m_size = newSize;

    if (m_widget) {

      IntRect newGeometry(0, 0, m_size.width, m_size.height);

      m_widget->setFrameRect(newGeometry);

    }

    if (m_client) {

      WebRect damagedRect(0, 0, m_size.width, m_size.height);

      m_client->didInvalidateRect(damagedRect);

    }

}

void WebPopupMenuImpl::layout()

{

}

void WebPopupMenuImpl::paint(WebCanvas* canvas, const WebRect& rect)

{

    if (!m_widget)

        return;

    if (!rect.isEmpty()) {

#if WEBKIT_USING_CG

        GraphicsContext gc(canvas);

#elif WEBKIT_USING_SKIA

        PlatformContextSkia context(canvas);

        // PlatformGraphicsContext is actually a pointer to PlatformContextSkia.

        GraphicsContext gc(reinterpret_cast<PlatformGraphicsContext*>(&context));

#else

        notImplemented();

#endif

        m_widget->paint(&gc, rect);

    }

}

bool WebPopupMenuImpl::handleInputEvent(const WebInputEvent& inputEvent)

{

    if (!m_widget)

        return false;

    // TODO (jcampan): WebKit seems to always return false on mouse events

    // methods. For now we'll assume it has processed them (as we are only

    // interested in whether keyboard events are processed).

    switch (inputEvent.type) {

    case WebInputEvent::MouseMove:

        MouseMove(*static_cast<const WebMouseEvent*>(&inputEvent));

        return true;

    case WebInputEvent::MouseLeave:

        MouseLeave(*static_cast<const WebMouseEvent*>(&inputEvent));

        return true;

    case WebInputEvent::MouseWheel:

        MouseWheel(*static_cast<const WebMouseWheelEvent*>(&inputEvent));

        return true;

    case WebInputEvent::MouseDown:

        MouseDown(*static_cast<const WebMouseEvent*>(&inputEvent));

        return true;

    case WebInputEvent::MouseUp:

        MouseUp(*static_cast<const WebMouseEvent*>(&inputEvent));

        return true;

    // In Windows, RawKeyDown only has information about the physical key, but

    // for "selection", we need the information about the character the key

    // translated into. For English, the physical key value and the character

    // value are the same, hence, "selection" works for English. But for other

    // languages, such as Hebrew, the character value is different from the

    // physical key value. Thus, without accepting Char event type which

    // contains the key's character value, the "selection" won't work for

    // non-English languages, such as Hebrew.

    case WebInputEvent::RawKeyDown:

    case WebInputEvent::KeyDown:

    case WebInputEvent::KeyUp:

    case WebInputEvent::Char:

        return KeyEvent(*static_cast<const WebKeyboardEvent*>(&inputEvent));

    default:

        break;

    }

    return false;

}

void WebPopupMenuImpl::mouseCaptureLost()

{

}

void WebPopupMenuImpl::setFocus(bool enable)

{

}

bool WebPopupMenuImpl::setComposition(

    const WebString& text, const WebVector<WebCompositionUnderline>& underlines,

    int selectionStart, int selectionEnd)

{

    return false;

}

bool WebPopupMenuImpl::confirmComposition()

{

    return false;

}

WebTextInputType WebPopupMenuImpl::textInputType()

{

    return WebTextInputTypeNone;

}

WebRect WebPopupMenuImpl::caretOrSelectionBounds()

{

    return WebRect();

}

void WebPopupMenuImpl::setTextDirection(WebTextDirection direction)

{

}

//-----------------------------------------------------------------------------

// WebCore::HostWindow

void WebPopupMenuImpl::invalidateContents(const IntRect&, bool)

{

    notImplemented();

}

void WebPopupMenuImpl::invalidateWindow(const IntRect&, bool)

{

    notImplemented();

}

void WebPopupMenuImpl::invalidateContentsAndWindow(const IntRect& paintRect, bool /*immediate*/)

{

    if (paintRect.isEmpty())

        return;

    if (m_client)

        m_client->didInvalidateRect(paintRect);

}

void WebPopupMenuImpl::invalidateContentsForSlowScroll(const IntRect& updateRect, bool immediate)

{

    invalidateContentsAndWindow(updateRect, immediate);

}

void WebPopupMenuImpl::scroll(const IntSize& scrollDelta,

                              const IntRect& scrollRect,

                              const IntRect& clipRect)

{

    if (m_client) {

        int dx = scrollDelta.width();

        int dy = scrollDelta.height();

        m_client->didScrollRect(dx, dy, clipRect);

    }

}

IntPoint WebPopupMenuImpl::screenToWindow(const IntPoint& point) const

{

    notImplemented();

    return IntPoint();

}

IntRect WebPopupMenuImpl::windowToScreen(const IntRect& rect) const

{

    notImplemented();

    return IntRect();

}

void WebPopupMenuImpl::scrollRectIntoView(const IntRect&, const ScrollView*) const

{

    // Nothing to be done here since we do not have the concept of a container

    // that implements its own scrolling.

}

void WebPopupMenuImpl::scrollbarsModeDidChange() const

{

    // Nothing to be done since we have no concept of different scrollbar modes.

}

void WebPopupMenuImpl::setCursor(const WebCore::Cursor&)

{

}

//-----------------------------------------------------------------------------

// WebCore::FramelessScrollViewClient

void WebPopupMenuImpl::popupClosed(FramelessScrollView* widget)

{

    ASSERT(widget == m_widget);

    if (m_widget) {

        m_widget->setClient(0);

        m_widget = 0;

    }

    m_client->closeWidgetSoon();

}

} // namespace WebKit