v8treewalkercustom.cpp

linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自WebKit

/*
 * Copyright (C) 2007-2009 Google Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
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 *
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 * notice, this list of conditions and the following disclaimer.
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 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
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 * 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
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 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "config.h"
#include "TreeWalker.h"

#include "Node.h"
#include "ScriptState.h"

#include "V8Binding.h"
#include "V8CustomBinding.h"
#include "V8Proxy.h"

#include <wtf/PassRefPtr.h>
#include <wtf/RefPtr.h>

namespace WebCore {

static inline v8::Handle<v8::Value> toV8(PassRefPtr<Node> object, ScriptState* state)
{
    if (state->hadException())
        return throwError(state->exception());

    if (!object)
        return v8::Null();

    return V8Proxy::NodeToV8Object(object.get());
}

CALLBACK_FUNC_DECL(TreeWalkerParentNode)
{
    INC_STATS("DOM.TreeWalker.parentNode()");
    TreeWalker* treeWalker = V8Proxy::ToNativeObject<TreeWalker>(V8ClassIndex::TREEWALKER, args.Holder());

    ScriptState state;
    RefPtr<Node> result = treeWalker->parentNode(&state);
    return toV8(result.release(), &state);
}

CALLBACK_FUNC_DECL(TreeWalkerFirstChild)
{
    INC_STATS("DOM.TreeWalker.firstChild()");
    TreeWalker* treeWalker = V8Proxy::ToNativeObject<TreeWalker>(V8ClassIndex::TREEWALKER, args.Holder());

    ScriptState state;
    RefPtr<Node> result = treeWalker->firstChild(&state);
    return toV8(result.release(), &state);
}

CALLBACK_FUNC_DECL(TreeWalkerLastChild)
{
    INC_STATS("DOM.TreeWalker.lastChild()");
    TreeWalker* treeWalker = V8Proxy::ToNativeObject<TreeWalker>(V8ClassIndex::TREEWALKER, args.Holder());

    ScriptState state;
    RefPtr<Node> result = treeWalker->lastChild(&state);
    return toV8(result.release(), &state);
}

CALLBACK_FUNC_DECL(TreeWalkerNextNode)
{
    INC_STATS("DOM.TreeWalker.nextNode()");
    TreeWalker* treeWalker = V8Proxy::ToNativeObject<TreeWalker>(V8ClassIndex::TREEWALKER, args.Holder());

    ScriptState state;
    RefPtr<Node> result = treeWalker->nextNode(&state);
    return toV8(result.release(), &state);
}

CALLBACK_FUNC_DECL(TreeWalkerPreviousNode)
{
    INC_STATS("DOM.TreeWalker.previousNode()");
    TreeWalker* treeWalker = V8Proxy::ToNativeObject<TreeWalker>(V8ClassIndex::TREEWALKER, args.Holder());

    ScriptState state;
    RefPtr<Node> result = treeWalker->previousNode(&state);
    return toV8(result.release(), &state);
}

CALLBACK_FUNC_DECL(TreeWalkerNextSibling)
{
    INC_STATS("DOM.TreeWalker.nextSibling()");
    TreeWalker* treeWalker = V8Proxy::ToNativeObject<TreeWalker>(V8ClassIndex::TREEWALKER, args.Holder());

    ScriptState state;
    RefPtr<Node> result = treeWalker->nextSibling(&state);
    return toV8(result.release(), &state);
}

CALLBACK_FUNC_DECL(TreeWalkerPreviousSibling)
{
    INC_STATS("DOM.TreeWalker.previousSibling()");
    TreeWalker* treeWalker = V8Proxy::ToNativeObject<TreeWalker>(V8ClassIndex::TREEWALKER, args.Holder());

    ScriptState state;
    RefPtr<Node> result = treeWalker->previousSibling(&state);
    return toV8(result.release(), &state);
}

} // namespace WebCore