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      1 /*
      2  * Copyright (C) 2011 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 /**
     32  * @constructor
     33  * @extends {WebInspector.Object}
     34  * @param {!WebInspector.Target} target
     35  * @param {boolean} isMainFrontend
     36  */
     37 WebInspector.WorkerManager = function(target, isMainFrontend)
     38 {
     39     this._reset();
     40     target.registerWorkerDispatcher(new WebInspector.WorkerDispatcher(this));
     41     if (isMainFrontend) {
     42         target.workerAgent().enable();
     43         target.resourceTreeModel.addEventListener(WebInspector.ResourceTreeModel.EventTypes.MainFrameNavigated, this._mainFrameNavigated, this);
     44     }
     45 }
     46 
     47 WebInspector.WorkerManager.Events = {
     48     WorkerAdded: "WorkerAdded",
     49     WorkerRemoved: "WorkerRemoved",
     50     WorkersCleared: "WorkersCleared",
     51     WorkerSelectionChanged: "WorkerSelectionChanged",
     52     WorkerDisconnected: "WorkerDisconnected",
     53     MessageFromWorker: "MessageFromWorker",
     54 }
     55 
     56 WebInspector.WorkerManager.MainThreadId = 0;
     57 
     58 WebInspector.WorkerManager.prototype = {
     59 
     60     _reset: function()
     61     {
     62         /** @type {!Object.<number, string>} */
     63         this._threadUrlByThreadId = {};
     64         this._threadUrlByThreadId[WebInspector.WorkerManager.MainThreadId] = WebInspector.UIString("Thread: Main");
     65         this._threadsList = [WebInspector.WorkerManager.MainThreadId];
     66         this._selectedThreadId = WebInspector.WorkerManager.MainThreadId;
     67     },
     68 
     69     _workerCreated: function(workerId, url, inspectorConnected)
     70     {
     71         this._threadsList.push(workerId);
     72         this._threadUrlByThreadId[workerId] = url;
     73         this.dispatchEventToListeners(WebInspector.WorkerManager.Events.WorkerAdded, {workerId: workerId, url: url, inspectorConnected: inspectorConnected});
     74      },
     75 
     76     _workerTerminated: function(workerId)
     77     {
     78         this._threadsList.remove(workerId);
     79         delete this._threadUrlByThreadId[workerId];
     80         this.dispatchEventToListeners(WebInspector.WorkerManager.Events.WorkerRemoved, workerId);
     81     },
     82 
     83     _dispatchMessageFromWorker: function(workerId, message)
     84     {
     85         this.dispatchEventToListeners(WebInspector.WorkerManager.Events.MessageFromWorker, {workerId: workerId, message: message})
     86     },
     87 
     88     _disconnectedFromWorker: function()
     89     {
     90         this.dispatchEventToListeners(WebInspector.WorkerManager.Events.WorkerDisconnected)
     91     },
     92 
     93     _mainFrameNavigated: function(event)
     94     {
     95         this._reset();
     96         this.dispatchEventToListeners(WebInspector.WorkerManager.Events.WorkersCleared);
     97     },
     98 
     99     /**
    100      * @return {!Array.<number>}
    101      */
    102     threadsList: function()
    103     {
    104         return this._threadsList;
    105     },
    106 
    107     /**
    108      * @param {number} threadId
    109      * @return {string}
    110      */
    111     threadUrl: function(threadId)
    112     {
    113         return this._threadUrlByThreadId[threadId];
    114     },
    115 
    116     /**
    117      * @param {number} threadId
    118      */
    119     setSelectedThreadId: function(threadId)
    120     {
    121         this._selectedThreadId = threadId;
    122     },
    123 
    124     /**
    125      * @return {number}
    126      */
    127     selectedThreadId: function()
    128     {
    129         return this._selectedThreadId;
    130     },
    131 
    132     __proto__: WebInspector.Object.prototype
    133 }
    134 
    135 /**
    136  * @constructor
    137  * @implements {WorkerAgent.Dispatcher}
    138  */
    139 WebInspector.WorkerDispatcher = function(workerManager)
    140 {
    141     this._workerManager = workerManager;
    142 }
    143 
    144 WebInspector.WorkerDispatcher.prototype = {
    145 
    146     workerCreated: function(workerId, url, inspectorConnected)
    147     {
    148         this._workerManager._workerCreated(workerId, url, inspectorConnected);
    149     },
    150 
    151     workerTerminated: function(workerId)
    152     {
    153         this._workerManager._workerTerminated(workerId);
    154     },
    155 
    156     dispatchMessageFromWorker: function(workerId, message)
    157     {
    158         this._workerManager._dispatchMessageFromWorker(workerId, message);
    159     },
    160 
    161     disconnectedFromWorker: function()
    162     {
    163         this._workerManager._disconnectedFromWorker();
    164     }
    165 }
    166 
    167 /**
    168  * @type {!WebInspector.WorkerManager}
    169  */
    170 WebInspector.workerManager;
    171 
    172 /**
    173  * @constructor
    174  * @extends {InspectorBackendClass.Connection}
    175  * @param {string} workerId
    176  */
    177 WebInspector.ExternalWorkerConnection = function(workerId)
    178 {
    179     InspectorBackendClass.Connection.call(this);
    180     this._workerId = workerId;
    181     window.addEventListener("message", this._processMessage.bind(this), true);
    182 }
    183 
    184 WebInspector.ExternalWorkerConnection.prototype = {
    185 
    186     /**
    187      * @param {!Event} event
    188      */
    189     _processMessage: function(event)
    190     {
    191         if (!event)
    192             return;
    193 
    194         var message = event.data;
    195         this.dispatch(message);
    196     },
    197 
    198     /**
    199      * @param {!Object} messageObject
    200      */
    201     sendMessage: function(messageObject)
    202     {
    203         window.opener.postMessage({workerId: this._workerId, command: "sendMessageToBackend", message: messageObject}, "*");
    204     },
    205 
    206     __proto__: InspectorBackendClass.Connection.prototype
    207 }
    208