/*

 * 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"

#include "V8DOMMap.h"

#include "DOMData.h"

#include "DOMDataStore.h"

#include "MainThreadDOMData.h"

#include "ScopedDOMDataStore.h"

namespace WebCore {

DOMDataStoreHandle::DOMDataStoreHandle()

    : m_store(new ScopedDOMDataStore(DOMData::getCurrent()))

{

}

DOMDataStoreHandle::~DOMDataStoreHandle()

{

}

static bool fasterDOMStoreAccess = false;

static inline DOMDataStore& getDOMDataStore()

{

    if (LIKELY(fasterDOMStoreAccess)) {

        ASSERT(WTF::isMainThread());

        return MainThreadDOMData::getCurrentMainThreadStore();

    }

    return DOMData::getCurrent()->getStore();

}

void enableFasterDOMStoreAccess()

{

    fasterDOMStoreAccess = true;

}

DOMNodeMapping& getDOMNodeMap()

{

    return getDOMDataStore().domNodeMap();

}

DOMWrapperMap<void>& getDOMObjectMap()

{

    return getDOMDataStore().domObjectMap();

}

DOMWrapperMap<void>& getActiveDOMObjectMap()

{

    return getDOMDataStore().activeDomObjectMap();

}

#if ENABLE(SVG)

DOMWrapperMap<SVGElementInstance>& getDOMSVGElementInstanceMap()

{

    return getDOMDataStore().domSvgElementInstanceMap();

}

// Map of SVG objects with contexts to V8 objects

DOMWrapperMap<void>& getDOMSVGObjectWithContextMap()

{

    return getDOMDataStore().domSvgObjectWithContextMap();

}

#endif // ENABLE(SVG)

void removeAllDOMObjectsInCurrentThread()

{

    v8::HandleScope scope;

    // The DOM objects with the following types only exist on the main thread.

    if (WTF::isMainThread()) {

        // Remove all DOM nodes.

        DOMData::removeObjectsFromWrapperMap<Node>(getDOMNodeMap());

#if ENABLE(SVG)

        // Remove all SVG element instances in the wrapper map.

        DOMData::removeObjectsFromWrapperMap<SVGElementInstance>(getDOMSVGElementInstanceMap());

        // Remove all SVG objects with context in the wrapper map.

        DOMData::removeObjectsFromWrapperMap<void>(getDOMSVGObjectWithContextMap());

#endif

    }

    // Remove all DOM objects in the wrapper map.

    DOMData::removeObjectsFromWrapperMap<void>(getDOMObjectMap());

    // Remove all active DOM objects in the wrapper map.

    DOMData::removeObjectsFromWrapperMap<void>(getActiveDOMObjectMap());

}

void visitDOMNodesInCurrentThread(DOMWrapperMap<Node>::Visitor* visitor)

{

    v8::HandleScope scope;

    WTF::MutexLocker locker(DOMDataStore::allStoresMutex());

    DOMDataList& list = DOMDataStore::allStores();

    for (size_t i = 0; i < list.size(); ++i) {

        DOMDataStore* store = list[i];

        if (!store->domData()->owningThread() == WTF::currentThread())

            continue;

        store->domNodeMap().visit(visitor);

    }

}

void visitDOMObjectsInCurrentThread(DOMWrapperMap<void>::Visitor* visitor)

{

    v8::HandleScope scope;

    WTF::MutexLocker locker(DOMDataStore::allStoresMutex());

    DOMDataList& list = DOMDataStore::allStores();

    for (size_t i = 0; i < list.size(); ++i) {

        DOMDataStore* store = list[i];

        if (!store->domData()->owningThread() == WTF::currentThread())

            continue;

        store->domObjectMap().visit(visitor);

    }

}

void visitActiveDOMObjectsInCurrentThread(DOMWrapperMap<void>::Visitor* visitor)

{

    v8::HandleScope scope;

    WTF::MutexLocker locker(DOMDataStore::allStoresMutex());

    DOMDataList& list = DOMDataStore::allStores();

    for (size_t i = 0; i < list.size(); ++i) {

        DOMDataStore* store = list[i];

        if (!store->domData()->owningThread() == WTF::currentThread())

            continue;

        store->activeDomObjectMap().visit(visitor);

    }

}

#if ENABLE(SVG)

void visitDOMSVGElementInstancesInCurrentThread(DOMWrapperMap<SVGElementInstance>::Visitor* visitor)

{

    v8::HandleScope scope;

    WTF::MutexLocker locker(DOMDataStore::allStoresMutex());

    DOMDataList& list = DOMDataStore::allStores();

    for (size_t i = 0; i < list.size(); ++i) {

        DOMDataStore* store = list[i];

        if (!store->domData()->owningThread() == WTF::currentThread())

            continue;

        store->domSvgElementInstanceMap().visit(visitor);

    }

}

void visitSVGObjectsInCurrentThread(DOMWrapperMap<void>::Visitor* visitor)

{

    v8::HandleScope scope;

    WTF::MutexLocker locker(DOMDataStore::allStoresMutex());

    DOMDataList& list = DOMDataStore::allStores();

    for (size_t i = 0; i < list.size(); ++i) {

        DOMDataStore* store = list[i];

        if (!store->domData()->owningThread() == WTF::currentThread())

            continue;

        store->domSvgObjectWithContextMap().visit(visitor);

    }

}

#endif

} // namespace WebCore