DevTools: show progress when retrieving recorded trace events

Source/devtools/front_end/timeline/TimelinePanel.js

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2012 Intel 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.
@@ skipping 31 matching lines @@
     this.registerRequiredCSS("ui/filter.css");
     this.element.addEventListener("contextmenu", this._contextMenu.bind(this), false);
 
     this._detailsLinkifier = new WebInspector.Linkifier();
     this._windowStartTime = 0;
     this._windowEndTime = Infinity;
 
     // Create model.
     this._tracingManager = new WebInspector.TracingManager();
     this._tracingManager.addEventListener(WebInspector.TracingManager.Events.BufferUsage, this._onTracingBufferUsage, this);
+    this._tracingManager.addEventListener(WebInspector.TracingManager.Events.RetrieveEventsProgress, this._onRetrieveEventsProgress, this);
 
     this._tracingModel = new WebInspector.TracingModel();
     this._model = new WebInspector.TimelineModel(this._tracingManager, this._tracingModel, WebInspector.TimelineUIUtils.hiddenRecordsFilter());
 
     this._model.addEventListener(WebInspector.TimelineModel.Events.RecordingStarted, this._onRecordingStarted, this);
     this._model.addEventListener(WebInspector.TimelineModel.Events.RecordingStopped, this._onRecordingStopped, this);
     this._model.addEventListener(WebInspector.TimelineModel.Events.RecordsCleared, this._onRecordsCleared, this);
     this._model.addEventListener(WebInspector.TimelineModel.Events.RecordFilterChanged, this._refreshViews, this);
 
     this._categoryFilter = new WebInspector.TimelineCategoryFilter();
@@ skipping 692 matching lines @@
     /**
      * @param {!WebInspector.Event} event
      */
     _onTracingBufferUsage: function(event)
     {
         var usage = /** @type {number} */ (event.data);
         this._updateProgress(WebInspector.UIString("Buffer usage %d%", Math.round(usage * 100)));
     },
 
     /**
+     * @param {!WebInspector.Event} event
+     */
+    _onRetrieveEventsProgress: function(event)
+    {
+        var progress = /** @type {number} */ (event.data);
+        this._updateProgress(WebInspector.UIString("Retrieving events\u2026 %d%", Math.round(progress * 100)));
+    },
+
+    /**
      * @param {string} progressMessage
      */
     _updateProgress: function(progressMessage)
     {
         if (!this._progressElement)
             this._showProgressPane();
         this._progressElement.textContent = progressMessage;
     },
 
     _showProgressPane: function()
@@ skipping 694 matching lines @@
 
 WebInspector.TimelinePanelFactory.prototype = {
     /**
      * @return {!WebInspector.Panel}
      */
     createPanel: function()
     {
         return WebInspector.TimelinePanel._instance();
     }
 }