[Devtools] Replace "Stacks" with "Causes"

Source/devtools/front_end/timeline/TracingTimelineUIUtils.js

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @constructor
  * @extends {WebInspector.TimelineUIUtils}
  */
 WebInspector.TracingTimelineUIUtils = function()
 {
@@ skipping 520 matching lines @@
     var fragment = document.createDocumentFragment();
     var stats = {};
     var hasChildren = WebInspector.TracingTimelineUIUtils._aggregatedStatsForTraceEvent(stats, model, event);
     var pieChart = hasChildren ?
         WebInspector.TimelineUIUtils.generatePieChart(stats, WebInspector.TracingTimelineUIUtils.eventStyle(event).category, event.selfTime) :
         WebInspector.TimelineUIUtils.generatePieChart(stats);
     fragment.appendChild(pieChart);
 
     var recordTypes = WebInspector.TracingTimelineModel.RecordType;
 
-    // The messages may vary per event.name;
-    var callSiteStackTraceLabel;
-    var callStackLabel;
+    // This message may vary per event.name;
     var relatedNodeLabel;
 
     var contentHelper = new WebInspector.TimelineDetailsContentHelper(event.thread.target(), linkifier, true);
     contentHelper.appendTextRow(WebInspector.UIString("Self Time"), Number.millisToString(event.selfTime, true));
     contentHelper.appendTextRow(WebInspector.UIString("Start Time"), Number.millisToString((event.startTime - model.minimumRecordTime())));
     var eventData = event.args["data"];
     var initiator = event.initiator;
 
     switch (event.name) {
     case recordTypes.GCEvent:
         var delta = event.args["usedHeapSizeBefore"] - event.args["usedHeapSizeAfter"];
         contentHelper.appendTextRow(WebInspector.UIString("Collected"), Number.bytesToString(delta));
         break;
     case recordTypes.TimerFire:
-        callSiteStackTraceLabel = WebInspector.UIString("Timer installed");
-        // Fall-through intended.
-
     case recordTypes.TimerInstall:
     case recordTypes.TimerRemove:
         contentHelper.appendTextRow(WebInspector.UIString("Timer ID"), eventData["timerId"]);
         if (event.name === recordTypes.TimerInstall) {
             contentHelper.appendTextRow(WebInspector.UIString("Timeout"), Number.millisToString(eventData["timeout"]));
             contentHelper.appendTextRow(WebInspector.UIString("Repeats"), !eventData["singleShot"]);
         }
         break;
     case recordTypes.FireAnimationFrame:
-        callSiteStackTraceLabel = WebInspector.UIString("Animation frame requested");
         contentHelper.appendTextRow(WebInspector.UIString("Callback ID"), eventData["id"]);
         break;
     case recordTypes.FunctionCall:
         if (eventData["scriptName"])
             contentHelper.appendLocationRow(WebInspector.UIString("Location"), eventData["scriptName"], eventData["scriptLine"]);
         break;
     case recordTypes.ResourceSendRequest:
     case recordTypes.ResourceReceiveResponse:
     case recordTypes.ResourceReceivedData:
     case recordTypes.ResourceFinish:
@@ skipping 31 matching lines @@
     case recordTypes.DecodeLazyPixelRef:
     case recordTypes.DecodeImage:
     case recordTypes.ResizeImage:
     case recordTypes.DrawLazyPixelRef:
         relatedNodeLabel = WebInspector.UIString("Image element");
         if (event.imageURL)
             contentHelper.appendElementRow(WebInspector.UIString("Image URL"), WebInspector.linkifyResourceAsNode(event.imageURL));
         break;
     case recordTypes.RecalculateStyles: // We don't want to see default details.
         contentHelper.appendTextRow(WebInspector.UIString("Elements affected"), event.args["elementCount"]);
-        callStackLabel = WebInspector.UIString("Styles recalculation forced");
         break;
     case recordTypes.Layout:
         var beginData = event.args["beginData"];
         contentHelper.appendTextRow(WebInspector.UIString("Nodes that need layout"), beginData["dirtyObjects"]);
         contentHelper.appendTextRow(WebInspector.UIString("Layout tree size"), beginData["totalObjects"]);
         contentHelper.appendTextRow(WebInspector.UIString("Layout scope"),
                                     beginData["partialLayout"] ? WebInspector.UIString("Partial") : WebInspector.UIString("Whole document"));
-        callSiteStackTraceLabel = WebInspector.UIString("Layout invalidated");
-        callStackLabel = WebInspector.UIString("Layout forced");
         relatedNodeLabel = WebInspector.UIString("Layout root");
         break;
     case recordTypes.ConsoleTime:
         contentHelper.appendTextRow(WebInspector.UIString("Message"), event.name);
         break;
     case recordTypes.WebSocketCreate:
     case recordTypes.WebSocketSendHandshakeRequest:
     case recordTypes.WebSocketReceiveHandshakeResponse:
     case recordTypes.WebSocketDestroy:
         var initiatorData = initiator ? initiator.args["data"] : eventData;
@@ skipping 13 matching lines @@
             contentHelper.appendElementRow(WebInspector.UIString("Details"), detailsNode);
         break;
     }
 
     if (relatedNode)
         contentHelper.appendElementRow(relatedNodeLabel || WebInspector.UIString("Related node"), WebInspector.DOMPresentationUtils.linkifyNodeReference(relatedNode));
 
     if (eventData && eventData["scriptName"] && event.name !== recordTypes.FunctionCall)
         contentHelper.appendLocationRow(WebInspector.UIString("Function Call"), eventData["scriptName"], eventData["scriptLine"]);
 
-    if (initiator) {
-        var callSiteStackTrace = initiator.stackTrace;
-        if (callSiteStackTrace)
-            contentHelper.appendStackTrace(callSiteStackTraceLabel || WebInspector.UIString("Call Site stack"), callSiteStackTrace);
-    }
-    var eventStackTrace = event.stackTrace;
-    if (eventStackTrace)
-        contentHelper.appendStackTrace(callStackLabel || WebInspector.UIString("Call Stack"), eventStackTrace);
-
     var warning = event.warning;
     if (warning) {
         var div = document.createElement("div");
         div.textContent = warning;
         contentHelper.appendElementRow(WebInspector.UIString("Warning"), div);
     }
     if (event.previewElement)
         contentHelper.appendElementRow(WebInspector.UIString("Preview"), event.previewElement);
+
+    if (event.stackTrace || (event.initiator && event.initiator.stackTrace))
+        WebInspector.TracingTimelineUIUtils._generateCauses(event, contentHelper);
+
     fragment.appendChild(contentHelper.element);
     return fragment;
 }
 
 /**
+ * @param {!WebInspector.TracingModel.Event} event
+ * @param {!WebInspector.TimelineDetailsContentHelper} contentHelper
+ */
+WebInspector.TracingTimelineUIUtils._generateCauses = function(event, contentHelper)
+{
+    var recordTypes = WebInspector.TracingTimelineModel.RecordType;
+
+    var callSiteStackLabel;
+    var stackLabel;
+
+    switch (event.name) {
+    case recordTypes.TimerFire:
+        callSiteStackLabel = WebInspector.UIString("Timer installed");
+        break;
+    case recordTypes.FireAnimationFrame:
+        callSiteStackLabel = WebInspector.UIString("Animation frame requested");
+        break;
+    case recordTypes.RecalculateStyles:
+        stackLabel = WebInspector.UIString("Stack when style recalculation was forced");
+        break;
+    case recordTypes.Layout:
+        callSiteStackLabel = WebInspector.UIString("First layout invalidation");
+        stackLabel = WebInspector.UIString("Stack when layout was forced");
+        break;
+    }
+
+    // Direct cause.
+    if (event.stackTrace)
+        contentHelper.appendStackTrace(stackLabel || WebInspector.UIString("Stack when this event occurred"), event.stackTrace);
+
+    // Indirect cause / invalidation.
+    var initiator = event.initiator;
+    if (initiator && initiator.stackTrace)
+        contentHelper.appendStackTrace(callSiteStackLabel || WebInspector.UIString("Stack when first invalidated"), initiator.stackTrace);
+}
+
+/**
  * @param {!Object} total
  * @param {!WebInspector.TracingTimelineModel} model
  * @param {!WebInspector.TracingModel.Event} event
  * @return {boolean}
  */
 WebInspector.TracingTimelineUIUtils._aggregatedStatsForTraceEvent = function(total, model, event)
 {
     var events = model.inspectedTargetEvents();
     /**
      * @param {number} startTime
@@ skipping 115 matching lines @@
     return result;
 }
 
 /**
  * @return {!WebInspector.TracingTimelineModel.Filter}
  */
 WebInspector.TracingTimelineUIUtils.hiddenEventsFilter = function()
 {
     return new WebInspector.TracingTimelineModel.InclusiveEventNameFilter(WebInspector.TracingTimelineUIUtils._visibleTypes());
 }