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/*
* Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER "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 HOLDER 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"
#include "core/dom/NamedFlowCollection.h"
#include "RuntimeEnabledFeatures.h"
#include "core/dom/DOMNamedFlowCollection.h"
#include "core/dom/Document.h"
#include "core/dom/NamedFlow.h"
#include "core/inspector/InspectorInstrumentation.h"
#include "wtf/text/StringHash.h"
#include "wtf/text/WTFString.h"
namespace WebCore {
NamedFlowCollection::NamedFlowCollection(Document* document)
: DocumentLifecycleObserver(document)
{
ASSERT(RuntimeEnabledFeatures::cssRegionsEnabled());
}
Vector<RefPtr<NamedFlow> > NamedFlowCollection::namedFlows()
{
Vector<RefPtr<NamedFlow> > namedFlows;
for (NamedFlowSet::iterator it = m_namedFlows.begin(); it != m_namedFlows.end(); ++it) {
if ((*it)->flowState() == NamedFlow::FlowStateNull)
continue;
namedFlows.append(RefPtr<NamedFlow>(*it));
}
return namedFlows;
}
NamedFlow* NamedFlowCollection::flowByName(const String& flowName)
{
NamedFlowSet::iterator it = m_namedFlows.find<String, NamedFlowHashTranslator>(flowName);
if (it == m_namedFlows.end() || (*it)->flowState() == NamedFlow::FlowStateNull)
return 0;
return *it;
}
PassRefPtr<NamedFlow> NamedFlowCollection::ensureFlowWithName(const String& flowName)
{
NamedFlowSet::iterator it = m_namedFlows.find<String, NamedFlowHashTranslator>(flowName);
if (it != m_namedFlows.end()) {
NamedFlow* namedFlow = *it;
ASSERT(namedFlow->flowState() == NamedFlow::FlowStateNull);
return namedFlow;
}
RefPtr<NamedFlow> newFlow = NamedFlow::create(this, flowName);
m_namedFlows.add(newFlow.get());
InspectorInstrumentation::didCreateNamedFlow(document(), newFlow.get());
return newFlow.release();
}
void NamedFlowCollection::discardNamedFlow(NamedFlow* namedFlow)
{
// The document is not valid anymore so the collection will be destroyed anyway.
if (!document())
return;
ASSERT(namedFlow->flowState() == NamedFlow::FlowStateNull);
ASSERT(m_namedFlows.contains(namedFlow));
InspectorInstrumentation::willRemoveNamedFlow(document(), namedFlow);
m_namedFlows.remove(namedFlow);
}
Document* NamedFlowCollection::document() const
{
return lifecycleContext();
}
PassRefPtr<DOMNamedFlowCollection> NamedFlowCollection::createCSSOMSnapshot()
{
Vector<NamedFlow*> createdFlows;
for (NamedFlowSet::iterator it = m_namedFlows.begin(); it != m_namedFlows.end(); ++it)
if ((*it)->flowState() == NamedFlow::FlowStateCreated)
createdFlows.append(*it);
return DOMNamedFlowCollection::create(createdFlows);
}
// The HashFunctions object used by the HashSet to compare between NamedFlows.
// It is safe to set safeToCompareToEmptyOrDeleted because the HashSet will never contain null pointers or deleted values.
struct NamedFlowCollection::NamedFlowHashFunctions {
static unsigned hash(NamedFlow* key) { return DefaultHash<String>::Hash::hash(key->name()); }
static bool equal(NamedFlow* a, NamedFlow* b) { return a->name() == b->name(); }
static const bool safeToCompareToEmptyOrDeleted = true;
};
// The HashTranslator is used to lookup a NamedFlow in the set using a name.
struct NamedFlowCollection::NamedFlowHashTranslator {
static unsigned hash(const String& key) { return DefaultHash<String>::Hash::hash(key); }
static bool equal(NamedFlow* a, const String& b) { return a->name() == b; }
};
} // namespace WebCore