173 lines
5.8 KiB
C++
173 lines
5.8 KiB
C++
/**
|
|
* Copyright (C) 2005 Apple 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"
|
|
#include "RenderTreeBuilder.h"
|
|
#include "StyleInheritedData.h"
|
|
#include <wtf/IsoMallocInlines.h>
|
|
|
|
#if PLATFORM(IOS_FAMILY)
|
|
#include "RenderThemeIOS.h"
|
|
#endif
|
|
|
|
namespace WebCore {
|
|
|
|
using namespace HTMLNames;
|
|
|
|
WTF_MAKE_ISO_ALLOCATED_IMPL(RenderButton);
|
|
|
|
RenderButton::RenderButton(HTMLFormControlElement& element, RenderStyle&& style)
|
|
: RenderFlexibleBox(element, WTFMove(style))
|
|
{
|
|
}
|
|
|
|
RenderButton::~RenderButton() = default;
|
|
|
|
HTMLFormControlElement& RenderButton::formControlElement() const
|
|
{
|
|
return downcast<HTMLFormControlElement>(nodeForNonAnonymous());
|
|
}
|
|
|
|
bool RenderButton::canBeSelectionLeaf() const
|
|
{
|
|
return formControlElement().hasEditableStyle();
|
|
}
|
|
|
|
bool RenderButton::hasLineIfEmpty() const
|
|
{
|
|
return is<HTMLInputElement>(formControlElement());
|
|
}
|
|
|
|
void RenderButton::setInnerRenderer(RenderBlock& innerRenderer)
|
|
{
|
|
ASSERT(!m_inner.get());
|
|
m_inner = makeWeakPtr(innerRenderer);
|
|
updateAnonymousChildStyle(m_inner->mutableStyle());
|
|
}
|
|
|
|
void RenderButton::updateAnonymousChildStyle(RenderStyle& childStyle) const
|
|
{
|
|
childStyle.setFlexGrow(1.0f);
|
|
// min-width: 0; is needed for correct shrinking.
|
|
childStyle.setMinWidth(Length(0, LengthType::Fixed));
|
|
// Use margin:auto instead of align-items:center to get safe centering, i.e.
|
|
// when the content overflows, treat it the same as align-items: flex-start.
|
|
childStyle.setMarginTop(Length());
|
|
childStyle.setMarginBottom(Length());
|
|
childStyle.setFlexDirection(style().flexDirection());
|
|
childStyle.setJustifyContent(style().justifyContent());
|
|
childStyle.setFlexWrap(style().flexWrap());
|
|
childStyle.setAlignItems(style().alignItems());
|
|
childStyle.setAlignContent(style().alignContent());
|
|
}
|
|
|
|
void RenderButton::updateFromElement()
|
|
{
|
|
// If we're an input element, we may need to change our button text.
|
|
if (is<HTMLInputElement>(formControlElement())) {
|
|
HTMLInputElement& input = downcast<HTMLInputElement>(formControlElement());
|
|
String value = input.valueWithDefault();
|
|
setText(value);
|
|
}
|
|
}
|
|
|
|
void RenderButton::setText(const String& str)
|
|
{
|
|
if (!m_buttonText && str.isEmpty())
|
|
return;
|
|
|
|
if (!m_buttonText) {
|
|
auto newButtonText = createRenderer<RenderTextFragment>(document(), str);
|
|
m_buttonText = makeWeakPtr(*newButtonText);
|
|
// FIXME: This mutation should go through the normal RenderTreeBuilder path.
|
|
if (RenderTreeBuilder::current())
|
|
RenderTreeBuilder::current()->attach(*this, WTFMove(newButtonText));
|
|
else
|
|
RenderTreeBuilder(*document().renderView()).attach(*this, WTFMove(newButtonText));
|
|
return;
|
|
}
|
|
|
|
if (!str.isEmpty()) {
|
|
m_buttonText->setText(str.impl());
|
|
return;
|
|
}
|
|
if (RenderTreeBuilder::current())
|
|
RenderTreeBuilder::current()->destroy(*m_buttonText);
|
|
else
|
|
RenderTreeBuilder(*document().renderView()).destroy(*m_buttonText);
|
|
}
|
|
|
|
String RenderButton::text() const
|
|
{
|
|
if (m_buttonText)
|
|
return m_buttonText->text();
|
|
return { };
|
|
}
|
|
|
|
bool RenderButton::canHaveGeneratedChildren() const
|
|
{
|
|
// Input elements can't have generated 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 !is<HTMLInputElement>(formControlElement());
|
|
}
|
|
|
|
LayoutRect RenderButton::controlClipRect(const LayoutPoint& additionalOffset) const
|
|
{
|
|
// Clip to the padding box to at least give content the extra padding space.
|
|
return LayoutRect(additionalOffset.x() + borderLeft(), additionalOffset.y() + borderTop(), width() - borderLeft() - borderRight(), height() - borderTop() - borderBottom());
|
|
}
|
|
|
|
static LayoutUnit synthesizedBaselineFromContentBox(const RenderBox& box, LineDirectionMode direction)
|
|
{
|
|
return direction == HorizontalLine ? box.borderTop() + box.paddingTop() + box.contentHeight() : box.borderRight() + box.paddingRight() + box.contentWidth();
|
|
}
|
|
|
|
LayoutUnit RenderButton::baselinePosition(FontBaseline fontBaseline, bool firstLine, LineDirectionMode direction, LinePositionMode mode) const
|
|
{
|
|
if (shouldApplyLayoutContainment(*this))
|
|
return RenderFlexibleBox::baselinePosition(fontBaseline, firstLine, direction, mode);
|
|
// We cannot rely on RenderFlexibleBox::baselinePosition() because of flexboxes have some special behavior
|
|
// regarding baselines that shouldn't apply to buttons.
|
|
LayoutUnit baseline = firstLineBaseline().value_or(synthesizedBaselineFromContentBox(*this, direction));
|
|
LayoutUnit marginAscent = direction == HorizontalLine ? marginTop() : marginRight();
|
|
return baseline + marginAscent;
|
|
}
|
|
|
|
#if PLATFORM(IOS_FAMILY)
|
|
void RenderButton::layout()
|
|
{
|
|
RenderFlexibleBox::layout();
|
|
|
|
// FIXME: We should not be adjusting styles during layout. See <rdar://problem/7675493>.
|
|
RenderThemeIOS::adjustRoundBorderRadius(mutableStyle(), *this);
|
|
}
|
|
#endif
|
|
|
|
} // namespace WebCore
|