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/*
* Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
* Copyright (C) 2010 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 "SliderThumbElement.h"
#include "Event.h"
#include "Frame.h"
#include "MouseEvent.h"
#include "RenderSlider.h"
#include "RenderTheme.h"
#if PLATFORM(ANDROID) && ENABLE(TOUCH_EVENTS)
#include "TouchEvent.h"
#endif
namespace WebCore {
// FIXME: Find a way to cascade appearance (see the layout method) and get rid of this class.
class RenderSliderThumb : public RenderBlock {
public:
RenderSliderThumb(Node*);
virtual void layout();
};
RenderSliderThumb::RenderSliderThumb(Node* node)
: RenderBlock(node)
{
}
void RenderSliderThumb::layout()
{
// FIXME: Hard-coding this cascade of appearance is bad, because it's something
// that CSS usually does. We need to find a way to express this in CSS.
RenderStyle* parentStyle = parent()->style();
if (parentStyle->appearance() == SliderVerticalPart)
style()->setAppearance(SliderThumbVerticalPart);
else if (parentStyle->appearance() == SliderHorizontalPart)
style()->setAppearance(SliderThumbHorizontalPart);
else if (parentStyle->appearance() == MediaSliderPart)
style()->setAppearance(MediaSliderThumbPart);
else if (parentStyle->appearance() == MediaVolumeSliderPart)
style()->setAppearance(MediaVolumeSliderThumbPart);
if (style()->hasAppearance()) {
// FIXME: This should pass the style, not the renderer, to the theme.
theme()->adjustSliderThumbSize(this);
}
RenderBlock::layout();
}
RenderObject* SliderThumbElement::createRenderer(RenderArena* arena, RenderStyle*)
{
return new (arena) RenderSliderThumb(this);
}
void SliderThumbElement::defaultEventHandler(Event* event)
{
if (!event->isMouseEvent()
#if PLATFORM(ANDROID) && ENABLE(TOUCH_EVENTS)
&& !event->isTouchEvent()
#endif
) {
HTMLDivElement::defaultEventHandler(event);
return;
}
MouseEvent* mouseEvent = static_cast<MouseEvent*>(event);
bool isLeftButton = mouseEvent->button() == LeftButton;
const AtomicString& eventType = event->type();
if (eventType == eventNames().mousedownEvent && isLeftButton
#if PLATFORM(ANDROID) && ENABLE(TOUCH_EVENTS)
|| eventType == eventNames().touchstartEvent
#endif
) {
if (document()->frame() && renderer()) {
RenderSlider* slider = toRenderSlider(renderer()->parent());
if (slider) {
if (slider->mouseEventIsInThumb(mouseEvent)) {
// We selected the thumb, we want the cursor to always stay at
// the same position relative to the thumb.
m_offsetToThumb = slider->mouseEventOffsetToThumb(mouseEvent);
} else {
// We are outside the thumb, move the thumb to the point were
// we clicked. We'll be exactly at the center of the thumb.
m_offsetToThumb.setX(0);
m_offsetToThumb.setY(0);
}
m_inDragMode = true;
document()->frame()->eventHandler()->setCapturingMouseEventsNode(shadowHost());
event->setDefaultHandled();
return;
}
}
} else if (eventType == eventNames().mouseupEvent && isLeftButton
#if PLATFORM(ANDROID) && ENABLE(TOUCH_EVENTS)
|| eventType == eventNames().touchendEvent
#endif
) {
if (m_inDragMode) {
if (Frame* frame = document()->frame())
frame->eventHandler()->setCapturingMouseEventsNode(0);
m_inDragMode = false;
event->setDefaultHandled();
return;
}
} else if (eventType == eventNames().mousemoveEvent
#if PLATFORM(ANDROID) && ENABLE(TOUCH_EVENTS)
|| eventType == eventNames().touchmoveEvent
#endif
) {
if (m_inDragMode && renderer() && renderer()->parent()) {
RenderSlider* slider = toRenderSlider(renderer()->parent());
if (slider) {
FloatPoint curPoint = slider->absoluteToLocal(mouseEvent->absoluteLocation(), false, true);
#if PLATFORM(ANDROID) && ENABLE(TOUCH_EVENTS)
// Update the position when it is a touch event
if (event->isTouchEvent()) {
TouchEvent* touchEvent = static_cast<TouchEvent*>(event);
if (touchEvent && touchEvent->touches() && touchEvent->touches()->item(0)) {
curPoint.setX(touchEvent->touches()->item(0)->pageX());
curPoint.setY(touchEvent->touches()->item(0)->pageY());
curPoint = slider->absoluteToLocal(curPoint, false, true);
}
}
// Tell the webview that webkit will handle the following move events
event->setDefaultPrevented(true);
#endif
IntPoint eventOffset(curPoint.x() + m_offsetToThumb.x(), curPoint.y() + m_offsetToThumb.y());
slider->setValueForPosition(slider->positionForOffset(eventOffset));
event->setDefaultHandled();
return;
}
}
}
HTMLDivElement::defaultEventHandler(event);
}
void SliderThumbElement::detach()
{
if (m_inDragMode) {
if (Frame* frame = document()->frame())
frame->eventHandler()->setCapturingMouseEventsNode(0);
}
HTMLDivElement::detach();
}
}
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