/*

 * Copyright (C) 2009 Apple 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:

 * 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 APPLE INC. ``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 APPLE INC. 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 "JSHTMLAllCollection.h"

#include "AtomicString.h"

#include "HTMLAllCollection.h"

#include "JSDOMBinding.h"

#include "JSHTMLAllCollection.h"

#include "JSNode.h"

#include "JSNodeList.h"

#include "Node.h"

#include "StaticNodeList.h"

#include <runtime/JSValue.h>

#include <wtf/Vector.h>

using namespace JSC;

namespace WebCore {

static JSValue getNamedItems(ExecState* exec, JSHTMLAllCollection* collection, const Identifier& propertyName)

{

    Vector<RefPtr<Node> > namedItems;

    collection->impl()->namedItems(identifierToAtomicString(propertyName), namedItems);

    if (namedItems.isEmpty())

        return jsUndefined();

    if (namedItems.size() == 1)

        return toJS(exec, collection->globalObject(), namedItems[0].get());

    // FIXME: HTML5 specifies that this should be a DynamicNodeList.

    // FIXME: HTML5 specifies that non-HTMLOptionsCollection collections should return

    // the first matching item instead of a NodeList.

    return toJS(exec, collection->globalObject(), StaticNodeList::adopt(namedItems).get());

}

// HTMLCollections are strange objects, they support both get and call,

// so that document.forms.item(0) and document.forms(0) both work.

static EncodedJSValue JSC_HOST_CALL callHTMLAllCollection(ExecState* exec)

{

    if (exec->argumentCount() < 1)

        return JSValue::encode(jsUndefined());

    // Do not use thisObj here. It can be the JSHTMLDocument, in the document.forms(i) case.

    JSHTMLAllCollection* jsCollection = static_cast<JSHTMLAllCollection*>(exec->callee());

    HTMLAllCollection* collection = static_cast<HTMLAllCollection*>(jsCollection->impl());

    // Also, do we need the TypeError test here ?

    if (exec->argumentCount() == 1) {

        // Support for document.all(<index>) etc.

        bool ok;

        UString string = exec->argument(0).toString(exec);

        unsigned index = string.toUInt32(&ok, false);

        if (ok)

            return JSValue::encode(toJS(exec, jsCollection->globalObject(), collection->item(index)));

        // Support for document.images('<name>') etc.

        return JSValue::encode(getNamedItems(exec, jsCollection, Identifier(exec, string)));

    }

    // The second arg, if set, is the index of the item we want

    bool ok;

    UString string = exec->argument(0).toString(exec);

    unsigned index = exec->argument(1).toString(exec).toUInt32(&ok, false);

    if (ok) {

        String pstr = ustringToString(string);

        Node* node = collection->namedItem(pstr);

        while (node) {

            if (!index)

                return JSValue::encode(toJS(exec, jsCollection->globalObject(), node));

            node = collection->nextNamedItem(pstr);

            --index;

        }

    }

    return JSValue::encode(jsUndefined());

}

CallType JSHTMLAllCollection::getCallData(CallData& callData)

{

    callData.native.function = callHTMLAllCollection;

    return CallTypeHost;

}

bool JSHTMLAllCollection::canGetItemsForName(ExecState*, HTMLAllCollection* collection, const Identifier& propertyName)

{

    Vector<RefPtr<Node> > namedItems;

    collection->namedItems(identifierToAtomicString(propertyName), namedItems);

    return !namedItems.isEmpty();

}

JSValue JSHTMLAllCollection::nameGetter(ExecState* exec, JSValue slotBase, const Identifier& propertyName)

{

    JSHTMLAllCollection* thisObj = static_cast<JSHTMLAllCollection*>(asObject(slotBase));

    return getNamedItems(exec, thisObj, propertyName);

}

JSValue JSHTMLAllCollection::item(ExecState* exec)

{

    bool ok;

    uint32_t index = exec->argument(0).toString(exec).toUInt32(&ok, false);

    if (ok)

        return toJS(exec, globalObject(), impl()->item(index));

    return getNamedItems(exec, this, Identifier(exec, exec->argument(0).toString(exec)));

}

JSValue JSHTMLAllCollection::namedItem(ExecState* exec)

{

    return getNamedItems(exec, this, Identifier(exec, exec->argument(0).toString(exec)));

}

} // namespace WebCore