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/*
* 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"
#if ENABLE(RUBY)
#include "RenderRuby.h"
#include "RenderRubyRun.h"
namespace WebCore {
//=== generic helper functions to avoid excessive code duplication ===
static RenderRubyRun* lastRubyRun(const RenderObject* ruby)
{
RenderObject* child = ruby->lastChild();
if (child && ruby->isAfterContent(child))
child = child->previousSibling();
ASSERT(!child || child->isRubyRun());
return static_cast<RenderRubyRun*>(child);
}
static inline RenderRubyRun* findRubyRunParent(RenderObject* child)
{
while (child && !child->isRubyRun())
child = child->parent();
return static_cast<RenderRubyRun*>(child);
}
//=== ruby as inline object ===
RenderRubyAsInline::RenderRubyAsInline(Node* node)
: RenderInline(node)
{
}
RenderRubyAsInline::~RenderRubyAsInline()
{
}
bool RenderRubyAsInline::isChildAllowed(RenderObject* child, RenderStyle*) const
{
return child->isRubyText()
|| child->isRubyRun()
|| child->isInline();
}
void RenderRubyAsInline::addChild(RenderObject* child, RenderObject* beforeChild)
{
// Note: ':after' content is handled implicitly below
if (child->isRubyRun()) {
RenderInline::addChild(child, beforeChild);
return;
}
if (beforeChild && !isAfterContent(beforeChild) && !beforeChild->isRubyRun()) {
if (RenderRubyRun* run = findRubyRunParent(beforeChild)) {
run->addChild(child, beforeChild);
return;
}
ASSERT_NOT_REACHED(); // beforeChild should always have a run as parent!
// Emergency fallback: fall through and just append.
}
// If the new child would be appended, try to add the child to the previous run
// if possible, or create a new run otherwise.
// (The RenderRubyRun object will handle the details)
RenderRubyRun* lastRun = lastRubyRun(this);
if (!lastRun || lastRun->hasRubyText()) {
lastRun = RenderRubyRun::staticCreateRubyRun(this);
RenderInline::addChild(lastRun);
}
lastRun->addChild(child);
}
void RenderRubyAsInline::removeChild(RenderObject* child)
{
// If the child's parent is *this, i.e. a ruby run or ':after' content,
// just use the normal remove method.
if (child->parent() == this) {
ASSERT(child->isRubyRun() || child->isAfterContent());
RenderInline::removeChild(child);
return;
}
// Find the containing run
RenderRubyRun* run = findRubyRunParent(child);
ASSERT(run);
run->removeChild(child);
}
//=== ruby as block object ===
RenderRubyAsBlock::RenderRubyAsBlock(Node* node)
: RenderBlock(node)
{
}
RenderRubyAsBlock::~RenderRubyAsBlock()
{
}
bool RenderRubyAsBlock::isChildAllowed(RenderObject* child, RenderStyle*) const
{
return child->isRubyText()
|| child->isRubyRun()
|| child->isInline();
}
void RenderRubyAsBlock::addChild(RenderObject* child, RenderObject* beforeChild)
{
// Note: ':after' content is handled implicitely below
// if child is a ruby run, just add it normally
if (child->isRubyRun()) {
RenderBlock::addChild(child, beforeChild);
return;
}
if (beforeChild && !isAfterContent(beforeChild)) {
// insert child into run
ASSERT(!beforeChild->isRubyRun());
RenderObject* run = beforeChild;
while (run && !run->isRubyRun())
run = run->parent();
if (run) {
run->addChild(child, beforeChild);
return;
}
ASSERT(false); // beforeChild should always have a run as parent!
// Emergency fallback: fall through and just append.
}
// If the new child would be appended, try to add the child to the previous run
// if possible, or create a new run otherwise.
// (The RenderRubyRun object will handle the details)
RenderRubyRun* lastRun = lastRubyRun(this);
if (!lastRun || lastRun->hasRubyText()) {
lastRun = RenderRubyRun::staticCreateRubyRun(this);
RenderBlock::addChild(lastRun);
}
lastRun->addChild(child);
}
void RenderRubyAsBlock::removeChild(RenderObject* child)
{
// If the child's parent is *this, just use the normal remove method.
if (child->parent() == this) {
// This should happen only during destruction of the whole ruby element, though.
RenderBlock::removeChild(child);
return;
}
// Find the containing run
RenderRubyRun* run = findRubyRunParent(child);
ASSERT(run);
run->removeChild(child);
}
} // namespace WebCore
#endif // ENABLE(RUBY)
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