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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  */
     35 WebInspector.TimelineManager = function()
     36 {
     37     WebInspector.Object.call(this);
     38     this._dispatcher = new WebInspector.TimelineDispatcher(this);
     39     this._enablementCount = 0;
     40     TimelineAgent.enable();
     41 }
     42 
     43 WebInspector.TimelineManager.EventTypes = {
     44     TimelineStarted: "TimelineStarted",
     45     TimelineStopped: "TimelineStopped",
     46     TimelineEventRecorded: "TimelineEventRecorded"
     47 }
     48 
     49 WebInspector.TimelineManager.prototype = {
     50     /**
     51      * @return {boolean}
     52      */
     53     isStarted: function()
     54     {
     55         return this._dispatcher.isStarted();
     56     },
     57 
     58     /**
     59      * @param {number=} maxCallStackDepth
     60      * @param {boolean=} includeDomCounters
     61      * @param {boolean=} includeGPUEvents
     62      * @param {function(?Protocol.Error)=} callback
     63      */
     64     start: function(maxCallStackDepth, includeDomCounters, includeGPUEvents, callback)
     65     {
     66         this._enablementCount++;
     67         if (this._enablementCount === 1)
     68             TimelineAgent.start(maxCallStackDepth, /* bufferEvents */false, includeDomCounters, includeGPUEvents, callback);
     69         else if (callback)
     70             callback(null);
     71     },
     72 
     73     /**
     74      * @param {function(?Protocol.Error)=} callback
     75      */
     76     stop: function(callback)
     77     {
     78         this._enablementCount--;
     79         if (this._enablementCount < 0) {
     80             console.error("WebInspector.TimelineManager start/stop calls are unbalanced " + new Error().stack);
     81             return;
     82         }
     83         if (!this._enablementCount)
     84             TimelineAgent.stop(callback);
     85         else if (callback)
     86             callback(null);
     87     },
     88 
     89     __proto__: WebInspector.Object.prototype
     90 }
     91 
     92 /**
     93  * @constructor
     94  * @implements {TimelineAgent.Dispatcher}
     95  */
     96 WebInspector.TimelineDispatcher = function(manager)
     97 {
     98     this._manager = manager;
     99     InspectorBackend.registerTimelineDispatcher(this);
    100 }
    101 
    102 WebInspector.TimelineDispatcher.prototype = {
    103     /**
    104      * @param {!TimelineAgent.TimelineEvent} record
    105      */
    106     eventRecorded: function(record)
    107     {
    108         this._manager.dispatchEventToListeners(WebInspector.TimelineManager.EventTypes.TimelineEventRecorded, record);
    109     },
    110 
    111     /**
    112      * @return {boolean}
    113      */
    114     isStarted: function()
    115     {
    116         return !!this._started;
    117     },
    118 
    119     /**
    120      * @param {boolean=} consoleTimeline
    121      */
    122     started: function(consoleTimeline)
    123     {
    124         if (consoleTimeline) {
    125             // Wake up timeline panel module.
    126             WebInspector.panel("timeline");
    127         }
    128         this._started = true;
    129         this._manager.dispatchEventToListeners(WebInspector.TimelineManager.EventTypes.TimelineStarted, consoleTimeline);
    130     },
    131 
    132     /**
    133      * @param {boolean=} consoleTimeline
    134      */
    135     stopped: function(consoleTimeline)
    136     {
    137         this._started = false;
    138         this._manager.dispatchEventToListeners(WebInspector.TimelineManager.EventTypes.TimelineStopped, consoleTimeline);
    139     }
    140 }
    141 
    142 /**
    143  * @type {!WebInspector.TimelineManager}
    144  */
    145 WebInspector.timelineManager;
    146