/*
 * Copyright (C) 2011 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.
 */

WebInspector.HeapSnapshotWorkerDispatcher = function(globalObject, postMessage)
{
    this._objects = [];
    this._global = globalObject;
    this._postMessage = postMessage;
}

WebInspector.HeapSnapshotWorkerDispatcher.prototype = {
    _findFunction: function(name)
    {
        var path = name.split(".");
        var result = this._global;
        for (var i = 0; i < path.length; ++i)
            result = result[path[i]];
        return result;
    },

    dispatchMessage: function(event)
    {
        var data = event.data;
        switch (data.disposition) {
            case "create": {
                var constructorFunction = this._findFunction(data.methodName);
                this._objects[data.objectId] = new constructorFunction();
                this._postMessage({callId: data.callId});
                break;
            }
            case "dispose": {
                delete this._objects[data.objectId];
                this._postMessage({callId: data.callId});
                break;
            }
            case "getter": {
                var object = this._objects[data.objectId];
                var result = object[data.methodName];
                this._postMessage({callId: data.callId, result: result});
                break;
            }
            case "factory": {
                var object = this._objects[data.objectId];
                var result = object[data.methodName].apply(object, data.methodArguments);
                if (result)
                    this._objects[data.newObjectId] = result;
                this._postMessage({callId: data.callId, result: !!result});
                break;
            }
            case "method": {
                var object = this._objects[data.objectId];
                var result = object[data.methodName].apply(object, data.methodArguments);
                this._postMessage({callId: data.callId, result: result});
                break;
            }
        }
    }
};
