#include "config.h"
#include "RenderButton.h"
#include "Document.h"
#include "GraphicsContext.h"
#include "HTMLInputElement.h"
#include "HTMLNames.h"
#include "RenderTextFragment.h"
#include "RenderTheme.h"
#include "StyleInheritedData.h"
namespace WebCore {
using namespace HTMLNames;
RenderButton::RenderButton(Element* element)
: RenderFlexibleBox(element)
, m_buttonText(0)
, m_inner(0)
, m_default(false)
{
}
RenderButton::~RenderButton()
{
}
void RenderButton::addChild(RenderObject* newChild, RenderObject* beforeChild)
{
if (!m_inner) {
ASSERT(!firstChild());
m_inner = createAnonymousBlock(style()->display());
setupInnerStyle(m_inner->style());
RenderFlexibleBox::addChild(m_inner);
}
m_inner->addChild(newChild, beforeChild);
}
void RenderButton::removeChild(RenderObject* oldChild)
{
if (oldChild == m_inner || !m_inner || oldChild->parent() == this) {
ASSERT(oldChild == m_inner || !m_inner);
RenderFlexibleBox::removeChild(oldChild);
m_inner = 0;
} else
m_inner->removeChild(oldChild);
}
void RenderButton::styleWillChange(StyleDifference diff, const RenderStyle* newStyle)
{
if (m_inner) {
m_inner->style()->setFlexGrow(newStyle->initialFlexGrow());
m_inner->style()->setMarginTop(newStyle->initialMargin());
m_inner->style()->setMarginBottom(newStyle->initialMargin());
}
RenderBlock::styleWillChange(diff, newStyle);
}
void RenderButton::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
RenderBlock::styleDidChange(diff, oldStyle);
if (m_buttonText)
m_buttonText->setStyle(style());
if (m_inner) setupInnerStyle(m_inner->style());
if (!m_default && theme()->isDefault(this)) {
if (!m_timer)
m_timer = adoptPtr(new Timer<RenderButton>(this, &RenderButton::timerFired));
m_timer->startRepeating(0.03);
m_default = true;
} else if (m_default && !theme()->isDefault(this)) {
m_default = false;
m_timer.clear();
}
}
void RenderButton::setupInnerStyle(RenderStyle* innerStyle)
{
ASSERT(innerStyle->refCount() == 1);
innerStyle->setFlexGrow(1.0f);
innerStyle->setMarginTop(Length());
innerStyle->setMarginBottom(Length());
innerStyle->setFlexDirection(style()->flexDirection());
}
void RenderButton::updateFromElement()
{
if (node()->hasTagName(inputTag)) {
HTMLInputElement* input = static_cast<HTMLInputElement*>(node());
String value = input->valueWithDefault();
setText(value);
}
}
void RenderButton::setText(const String& str)
{
if (str.isEmpty()) {
if (m_buttonText) {
m_buttonText->destroy();
m_buttonText = 0;
}
} else {
if (m_buttonText)
m_buttonText->setText(str.impl());
else {
m_buttonText = new (renderArena()) RenderTextFragment(document(), str.impl());
m_buttonText->setStyle(style());
addChild(m_buttonText);
}
}
}
String RenderButton::text() const
{
return m_buttonText ? m_buttonText->text() : 0;
}
bool RenderButton::canHaveGeneratedChildren() const
{
return !node()->hasTagName(inputTag);
}
LayoutRect RenderButton::controlClipRect(const LayoutPoint& additionalOffset) const
{
return LayoutRect(additionalOffset.x() + borderLeft(), additionalOffset.y() + borderTop(), width() - borderLeft() - borderRight(), height() - borderTop() - borderBottom());
}
void RenderButton::timerFired(Timer<RenderButton>*)
{
if (document()->inPageCache())
return;
repaint();
}
}