1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178
|
/**
* Copyright (C) 2005 Apple Computer, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include "config.h"
#include "RenderButton.h"
#include "Document.h"
#include "GraphicsContext.h"
#include "HTMLInputElement.h"
#include "HTMLNames.h"
#include "RenderTextFragment.h"
#include "RenderTheme.h"
namespace WebCore {
using namespace HTMLNames;
RenderButton::RenderButton(Node* node)
: RenderFlexibleBox(node)
, m_buttonText(0)
, m_inner(0)
, m_default(false)
{
}
RenderButton::~RenderButton()
{
}
void RenderButton::addChild(RenderObject* newChild, RenderObject* beforeChild)
{
if (!m_inner) {
// Create an anonymous block.
ASSERT(!firstChild());
bool isFlexibleBox = style()->display() == BOX || style()->display() == INLINE_BOX;
m_inner = createAnonymousBlock(isFlexibleBox);
setupInnerStyle(m_inner->style());
RenderFlexibleBox::addChild(m_inner);
}
m_inner->addChild(newChild, beforeChild);
}
void RenderButton::removeChild(RenderObject* oldChild)
{
if (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) {
// RenderBlock::setStyle is going to apply a new style to the inner block, which
// will have the initial box flex value, 0. The current value is 1, because we set
// it right below. Here we change it back to 0 to avoid getting a spurious layout hint
// because of the difference.
m_inner->style()->setBoxFlex(0);
}
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) // RenderBlock handled updating the anonymous block's style.
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);
// RenderBlock::createAnonymousBlock creates a new RenderStyle, so this is
// safe to modify.
innerStyle->setBoxFlex(1.0f);
innerStyle->setBoxOrient(style()->boxOrient());
}
void RenderButton::updateFromElement()
{
// If we're an input element, we may need to change our button text.
if (node()->hasTagName(inputTag)) {
HTMLInputElement* input = static_cast<HTMLInputElement*>(node());
String value = input->valueWithDefault();
setText(value);
}
}
bool RenderButton::canHaveChildren() const
{
// Input elements can't have children, but button elements can. We'll
// write the code assuming any other button types that might emerge in the future
// can also have children.
return !node()->hasTagName(inputTag);
}
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;
}
void RenderButton::updateBeforeAfterContent(PseudoId type)
{
if (m_inner)
m_inner->children()->updateBeforeAfterContent(m_inner, type, this);
else
children()->updateBeforeAfterContent(this, type);
}
IntRect RenderButton::controlClipRect(int tx, int ty) const
{
// Clip to the padding box to at least give content the extra padding space.
return IntRect(tx + borderLeft(), ty + borderTop(), width() - borderLeft() - borderRight(), height() - borderTop() - borderBottom());
}
void RenderButton::timerFired(Timer<RenderButton>*)
{
// FIXME Bug 25110: Ideally we would stop our timer when our Document
// enters the page cache. But we currently have no way of being notified
// when that happens, so we'll just ignore the timer firing as long as
// we're in the cache.
if (document()->inPageCache())
return;
repaint();
}
} // namespace WebCore
|