FlowThreadController.cpp [plain text]
#include "config.h"
#include "FlowThreadController.h"
#include "NamedFlowCollection.h"
#include "RenderFlowThread.h"
#include "RenderNamedFlowThread.h"
#include "StyleInheritedData.h"
#include "WebKitNamedFlow.h"
#include <wtf/text/AtomicString.h>
namespace WebCore {
PassOwnPtr<FlowThreadController> FlowThreadController::create(RenderView* view)
{
return adoptPtr(new FlowThreadController(view));
}
FlowThreadController::FlowThreadController(RenderView* view)
: m_view(view)
, m_currentRenderFlowThread(0)
, m_isRenderNamedFlowThreadOrderDirty(false)
, m_flowThreadsWithAutoLogicalHeightRegions(0)
{
}
FlowThreadController::~FlowThreadController()
{
}
RenderNamedFlowThread* FlowThreadController::ensureRenderFlowThreadWithName(const AtomicString& name)
{
if (!m_renderNamedFlowThreadList)
m_renderNamedFlowThreadList = adoptPtr(new RenderNamedFlowThreadList());
else {
for (RenderNamedFlowThreadList::iterator iter = m_renderNamedFlowThreadList->begin(); iter != m_renderNamedFlowThreadList->end(); ++iter) {
RenderNamedFlowThread* flowRenderer = *iter;
if (flowRenderer->flowThreadName() == name)
return flowRenderer;
}
}
NamedFlowCollection* namedFlows = m_view->document()->namedFlows();
ASSERT(!namedFlows->flowByName(name));
RenderNamedFlowThread* flowRenderer = RenderNamedFlowThread::createAnonymous(m_view->document(), namedFlows->ensureFlowWithName(name));
flowRenderer->setStyle(RenderFlowThread::createFlowThreadStyle(m_view->style()));
m_renderNamedFlowThreadList->add(flowRenderer);
m_view->addChild(flowRenderer);
setIsRenderNamedFlowThreadOrderDirty(true);
return flowRenderer;
}
void FlowThreadController::styleDidChange()
{
RenderStyle* viewStyle = m_view->style();
for (RenderNamedFlowThreadList::iterator iter = m_renderNamedFlowThreadList->begin(); iter != m_renderNamedFlowThreadList->end(); ++iter) {
RenderNamedFlowThread* flowRenderer = *iter;
flowRenderer->setStyle(RenderFlowThread::createFlowThreadStyle(viewStyle));
}
}
void FlowThreadController::layoutRenderNamedFlowThreads()
{
updateFlowThreadsChainIfNecessary();
for (RenderNamedFlowThreadList::iterator iter = m_renderNamedFlowThreadList->begin(); iter != m_renderNamedFlowThreadList->end(); ++iter) {
RenderNamedFlowThread* flowRenderer = *iter;
flowRenderer->layoutIfNeeded();
}
}
void FlowThreadController::registerNamedFlowContentNode(Node* contentNode, RenderNamedFlowThread* namedFlow)
{
ASSERT(contentNode && contentNode->isElementNode());
ASSERT(namedFlow);
ASSERT(!m_mapNamedFlowContentNodes.contains(contentNode));
ASSERT(!namedFlow->hasContentNode(contentNode));
m_mapNamedFlowContentNodes.add(contentNode, namedFlow);
namedFlow->registerNamedFlowContentNode(contentNode);
}
void FlowThreadController::unregisterNamedFlowContentNode(Node* contentNode)
{
ASSERT(contentNode && contentNode->isElementNode());
HashMap<const Node*, RenderNamedFlowThread*>::iterator it = m_mapNamedFlowContentNodes.find(contentNode);
ASSERT(it != m_mapNamedFlowContentNodes.end());
ASSERT(it->value);
ASSERT(it->value->hasContentNode(contentNode));
it->value->unregisterNamedFlowContentNode(contentNode);
m_mapNamedFlowContentNodes.remove(contentNode);
}
void FlowThreadController::updateFlowThreadsChainIfNecessary()
{
ASSERT(m_renderNamedFlowThreadList);
ASSERT(isAutoLogicalHeightRegionsCountConsistent());
RenderNamedFlowThreadList toRemoveList;
for (RenderNamedFlowThreadList::iterator iter = m_renderNamedFlowThreadList->begin(); iter != m_renderNamedFlowThreadList->end(); ++iter) {
RenderNamedFlowThread* flowRenderer = *iter;
if (flowRenderer->isMarkedForDestruction())
toRemoveList.add(flowRenderer);
}
if (toRemoveList.size() > 0)
setIsRenderNamedFlowThreadOrderDirty(true);
for (RenderNamedFlowThreadList::iterator iter = toRemoveList.begin(); iter != toRemoveList.end(); ++iter) {
RenderNamedFlowThread* flowRenderer = *iter;
m_renderNamedFlowThreadList->remove(flowRenderer);
flowRenderer->destroy();
}
if (isRenderNamedFlowThreadOrderDirty()) {
RenderNamedFlowThreadList sortedList;
for (RenderNamedFlowThreadList::iterator iter = m_renderNamedFlowThreadList->begin(); iter != m_renderNamedFlowThreadList->end(); ++iter) {
RenderNamedFlowThread* flowRenderer = *iter;
if (sortedList.contains(flowRenderer))
continue;
flowRenderer->pushDependencies(sortedList);
sortedList.add(flowRenderer);
}
m_renderNamedFlowThreadList->swap(sortedList);
setIsRenderNamedFlowThreadOrderDirty(false);
}
}
bool FlowThreadController::updateFlowThreadsNeedingLayout()
{
bool needsTwoPassLayout = false;
for (RenderNamedFlowThreadList::iterator iter = m_renderNamedFlowThreadList->begin(); iter != m_renderNamedFlowThreadList->end(); ++iter) {
RenderNamedFlowThread* flowRenderer = *iter;
ASSERT(!flowRenderer->needsTwoPhasesLayout());
flowRenderer->setInConstrainedLayoutPhase(false);
if (flowRenderer->needsLayout() && flowRenderer->hasAutoLogicalHeightRegions())
needsTwoPassLayout = true;
}
if (needsTwoPassLayout)
resetFlowThreadsWithAutoHeightRegions();
return needsTwoPassLayout;
}
bool FlowThreadController::updateFlowThreadsNeedingTwoStepLayout()
{
bool needsTwoPassLayout = false;
for (RenderNamedFlowThreadList::iterator iter = m_renderNamedFlowThreadList->begin(); iter != m_renderNamedFlowThreadList->end(); ++iter) {
RenderNamedFlowThread* flowRenderer = *iter;
if (flowRenderer->needsTwoPhasesLayout()) {
needsTwoPassLayout = true;
break;
}
}
if (needsTwoPassLayout)
resetFlowThreadsWithAutoHeightRegions();
return needsTwoPassLayout;
}
void FlowThreadController::resetFlowThreadsWithAutoHeightRegions()
{
for (RenderNamedFlowThreadList::iterator iter = m_renderNamedFlowThreadList->begin(); iter != m_renderNamedFlowThreadList->end(); ++iter) {
RenderNamedFlowThread* flowRenderer = *iter;
if (flowRenderer->hasAutoLogicalHeightRegions()) {
flowRenderer->markAutoLogicalHeightRegionsForLayout();
flowRenderer->invalidateRegions();
}
}
}
void FlowThreadController::updateFlowThreadsIntoConstrainedPhase()
{
for (RenderNamedFlowThreadList::reverse_iterator iter = m_renderNamedFlowThreadList->rbegin(); iter != m_renderNamedFlowThreadList->rend(); ++iter) {
RenderNamedFlowThread* flowRenderer = *iter;
ASSERT(!flowRenderer->hasRegions() || flowRenderer->hasValidRegionInfo());
flowRenderer->layoutIfNeeded();
if (flowRenderer->hasAutoLogicalHeightRegions()) {
ASSERT(flowRenderer->needsTwoPhasesLayout());
flowRenderer->markAutoLogicalHeightRegionsForLayout();
}
flowRenderer->setInConstrainedLayoutPhase(true);
flowRenderer->clearNeedsTwoPhasesLayout();
}
}
bool FlowThreadController::isContentNodeRegisteredWithAnyNamedFlow(const Node* contentNode) const
{
return m_mapNamedFlowContentNodes.contains(contentNode);
}
#ifndef NDEBUG
bool FlowThreadController::isAutoLogicalHeightRegionsCountConsistent() const
{
if (!hasRenderNamedFlowThreads())
return !hasFlowThreadsWithAutoLogicalHeightRegions();
for (RenderNamedFlowThreadList::iterator iter = m_renderNamedFlowThreadList->begin(); iter != m_renderNamedFlowThreadList->end(); ++iter) {
if (!(*iter)->isAutoLogicalHeightRegionsCountConsistent())
return false;
}
return true;
}
#endif
}