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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 "NamedFlowCollection.h"
#include "DOMNamedFlowCollection.h"
#include "Document.h"
#include "InspectorInstrumentation.h"
#include <wtf/text/StringHash.h>
namespace WebCore {
NamedFlowCollection::NamedFlowCollection(Document* document)
: ContextDestructionObserver(document)
{
}
Vector<RefPtr<WebKitNamedFlow>> NamedFlowCollection::namedFlows()
{
Vector<RefPtr<WebKitNamedFlow>> namedFlows;
for (auto& namedFlow : m_namedFlows) {
if (namedFlow->flowState() == WebKitNamedFlow::FlowStateNull)
continue;
namedFlows.append(RefPtr<WebKitNamedFlow>(namedFlow));
}
return namedFlows;
}
WebKitNamedFlow* NamedFlowCollection::flowByName(const String& flowName)
{
NamedFlowSet::iterator it = m_namedFlows.find<String, NamedFlowHashTranslator>(flowName);
if (it == m_namedFlows.end() || (*it)->flowState() == WebKitNamedFlow::FlowStateNull)
return nullptr;
return *it;
}
Ref<WebKitNamedFlow> NamedFlowCollection::ensureFlowWithName(const String& flowName)
{
NamedFlowSet::iterator it = m_namedFlows.find<String, NamedFlowHashTranslator>(flowName);
if (it != m_namedFlows.end()) {
WebKitNamedFlow* namedFlow = *it;
ASSERT(namedFlow->flowState() == WebKitNamedFlow::FlowStateNull);
return *namedFlow;
}
RefPtr<WebKitNamedFlow> newFlow = WebKitNamedFlow::create(*this, flowName);
m_namedFlows.add(newFlow.get());
InspectorInstrumentation::didCreateNamedFlow(document(), *newFlow);
return newFlow.releaseNonNull();
}
void NamedFlowCollection::discardNamedFlow(WebKitNamedFlow* namedFlow)
{
// The document is not valid anymore so the collection will be destroyed anyway.
if (!document())
return;
ASSERT(namedFlow->flowState() == WebKitNamedFlow::FlowStateNull);
ASSERT(m_namedFlows.contains(namedFlow));
InspectorInstrumentation::willRemoveNamedFlow(document(), *namedFlow);
m_namedFlows.remove(namedFlow);
}
Document* NamedFlowCollection::document() const
{
ScriptExecutionContext* context = ContextDestructionObserver::scriptExecutionContext();
return downcast<Document>(context);
}
Ref<DOMNamedFlowCollection> NamedFlowCollection::createCSSOMSnapshot()
{
Vector<WebKitNamedFlow*> createdFlows;
for (auto& namedFlow : m_namedFlows) {
if (namedFlow->flowState() == WebKitNamedFlow::FlowStateCreated)
createdFlows.append(namedFlow);
}
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(WebKitNamedFlow* key) { return DefaultHash<String>::Hash::hash(key->name()); }
static bool equal(WebKitNamedFlow* a, WebKitNamedFlow* 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(WebKitNamedFlow* a, const String& b) { return a->name() == b; }
};
} // namespace WebCore
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