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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 }
     41 
     42 WebInspector.TimelineManager.EventTypes = {
     43     TimelineStarted: "TimelineStarted",
     44     TimelineStopped: "TimelineStopped",
     45     TimelineStartEvent: "TimelineStartEvent",
     46     TimelineEventRecorded: "TimelineEventRecorded"
     47 }
     48 
     49 WebInspector.TimelineManager.prototype = {
     50     /**
     51      * @param {number=} maxCallStackDepth
     52      * @param {boolean=} includeDomCounters
     53      * @param {boolean=} includeNativeMemoryStatistics
     54      */
     55     start: function(maxCallStackDepth, includeDomCounters, includeNativeMemoryStatistics)
     56     {
     57         this._enablementCount++;
     58         if (this._enablementCount === 1)
     59             TimelineAgent.start(maxCallStackDepth, includeDomCounters, includeNativeMemoryStatistics, this._started.bind(this));
     60     },
     61 
     62     stop: function()
     63     {
     64         if (!this._enablementCount) {
     65             console.error("WebInspector.TimelineManager start/stop calls are unbalanced");
     66             return;
     67         }
     68         this._enablementCount--;
     69         if (!this._enablementCount)
     70             TimelineAgent.stop(this._stopped.bind(this));
     71     },
     72 
     73     _started: function()
     74     {
     75         this.dispatchEventToListeners(WebInspector.TimelineManager.EventTypes.TimelineStarted);
     76     },
     77 
     78     _stopped: function()
     79     {
     80         this.dispatchEventToListeners(WebInspector.TimelineManager.EventTypes.TimelineStopped);
     81     },
     82 
     83     __proto__: WebInspector.Object.prototype
     84 }
     85 
     86 /**
     87  * @constructor
     88  * @implements {TimelineAgent.Dispatcher}
     89  */
     90 WebInspector.TimelineDispatcher = function(manager)
     91 {
     92     this._manager = manager;
     93     InspectorBackend.registerTimelineDispatcher(this);
     94 }
     95 
     96 WebInspector.TimelineDispatcher.prototype = {
     97     timelineStarted: function(timestampsBase, startTime)
     98     {
     99         var event = {
    100             timestampsBase: timestampsBase,
    101             startTime: startTime
    102         };
    103         this._manager.dispatchEventToListeners(WebInspector.TimelineManager.EventTypes.TimelineStartEvent, event);
    104     },
    105 
    106     eventRecorded: function(record)
    107     {
    108         this._manager.dispatchEventToListeners(WebInspector.TimelineManager.EventTypes.TimelineEventRecorded, record);
    109     }
    110 }
    111 
    112 /**
    113  * @type {WebInspector.TimelineManager}
    114  */
    115 WebInspector.timelineManager;
    116