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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/197473">197473</a></dd>
<dt>Author</dt> <dd>mattbaker@apple.com</dd>
<dt>Date</dt> <dd>2016-03-02 16:21:00 -0800 (Wed, 02 Mar 2016)</dd>
</dl>

<h3>Log Message</h3>
<pre>Web Inspector: Timelines UI redesign: add the timelines tree outline to the TimelineOverview
https://bugs.webkit.org/show_bug.cgi?id=153034
&lt;rdar://problem/24195628&gt;

Reviewed by Timothy Hatcher.

Move the Timelines tree outline to the overview, in preparation for &lt;https://webkit.org/b/153036&gt;.

* UserInterface/Views/OverviewTimelineView.css:
(.timeline-view.overview &gt; .timeline-ruler &gt; .header): Deleted.
(.timeline-view.overview &gt; .timeline-ruler &gt; .event-markers): Deleted.
These are now part of the default ruler style.

* UserInterface/Views/TimelineOverview.css:
(.timeline-overview &gt; .tree-outline.timelines):
(.timeline-overview &gt; .tree-outline.timelines::before):
(body.window-inactive .timeline-overview &gt; .tree-outline.timelines):
(.timeline-overview.frames &gt; .tree-outline.timelines):
(.timeline-overview &gt; .tree-outline.timelines .close-button):
(.timeline-overview &gt; .tree-outline.timelines .item.selected .close-button):
(.timeline-overview &gt; .tree-outline.timelines .item:not(.selected):nth-child(even)):
(.timeline-overview &gt; .tree-outline.timelines .item:not(.selected):not(:first-child)):
(.timeline-overview &gt; .tree-outline.timelines .item.selected + .item):
(body.window-inactive .timeline-overview &gt; .tree-outline.timelines .item.selected + .item):
(.timeline-overview &gt; .tree-outline.timelines :focus .item.selected + .item):
(.timeline-overview &gt; .scroll-container):
(.timeline-overview.frames &gt; .scroll-container):
(.timeline-overview &gt; .timeline-ruler):
(.timeline-overview.frames &gt; .timeline-ruler):
(.timeline-overview &gt; .timeline-ruler &gt; .markers):
(.timeline-overview &gt; .graphs-container):
(.timeline-overview.frames &gt; .graphs-container):
Styles for the timelines tree outline. A content element is inserted before the
tree to fill the gap created by the timeline ruler. For now the tree has a fixed
width of 185px, and is hidden when displaying the FPS instrument.

* UserInterface/Views/TimelineOverview.js:
(WebInspector.TimelineOverview):
(WebInspector.TimelineOverview.prototype.get selectedTimeline):
(WebInspector.TimelineOverview.prototype.set selectedTimeline):
Make the selected timeline accessible to the parent view, since the overview doesn't
have a &quot;represented object&quot;, or receive ContentView change notifications.

(WebInspector.TimelineOverview.prototype._instrumentAdded):
(WebInspector.TimelineOverview.prototype._instrumentRemoved):
(WebInspector.TimelineOverview.prototype._viewModeDidChange):
Add and remove instrument tree elements. Each tree element is created with a height
equal to it's overview graph, and is shown/hidden based on the current view mode.

(WebInspector.TimelineOverview.prototype._timelinesTreeSelectionDidChange):
Update the selected timeline and dispatch change event.

* UserInterface/Views/TimelineRecordingContentView.js:
(WebInspector.TimelineRecordingContentView):
(WebInspector.TimelineRecordingContentView.prototype._currentContentViewDidChange):
(WebInspector.TimelineRecordingContentView.prototype._updateTimelineOverviewHeight):
(WebInspector.TimelineRecordingContentView.prototype._timelineSelected):
Sync the overview's timeline selection with the current ContentView's represented object.

* UserInterface/Views/TimelineRuler.css:
(.timeline-ruler &gt; .header):
(.timeline-ruler &gt; .header &gt; .divider &gt; .label):
(.timeline-ruler &gt; .selection-drag):
(.timeline-ruler &gt; .selection-handle):
Ruler height changed to 23px, to be consistent with the DataGrid header.

* UserInterface/Views/TreeOutline.css:
(.tree-outline.large .item .icon):
Large icon style updated to match TimelineSidebarPanel.css. The 32px
size is outdated and no longer used.

* UserInterface/Views/Variables.css:
(:root):
New color variables, used by TimelineOverview.css.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceWebInspectorUIChangeLog">trunk/Source/WebInspectorUI/ChangeLog</a></li>
<li><a href="#trunkSourceWebInspectorUIUserInterfaceViewsOverviewTimelineViewcss">trunk/Source/WebInspectorUI/UserInterface/Views/OverviewTimelineView.css</a></li>
<li><a href="#trunkSourceWebInspectorUIUserInterfaceViewsTimelineOverviewcss">trunk/Source/WebInspectorUI/UserInterface/Views/TimelineOverview.css</a></li>
<li><a href="#trunkSourceWebInspectorUIUserInterfaceViewsTimelineOverviewjs">trunk/Source/WebInspectorUI/UserInterface/Views/TimelineOverview.js</a></li>
<li><a href="#trunkSourceWebInspectorUIUserInterfaceViewsTimelineRecordingContentViewjs">trunk/Source/WebInspectorUI/UserInterface/Views/TimelineRecordingContentView.js</a></li>
<li><a href="#trunkSourceWebInspectorUIUserInterfaceViewsTimelineRulercss">trunk/Source/WebInspectorUI/UserInterface/Views/TimelineRuler.css</a></li>
<li><a href="#trunkSourceWebInspectorUIUserInterfaceViewsTreeOutlinecss">trunk/Source/WebInspectorUI/UserInterface/Views/TreeOutline.css</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceWebInspectorUIChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebInspectorUI/ChangeLog (197472 => 197473)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebInspectorUI/ChangeLog        2016-03-03 00:19:05 UTC (rev 197472)
+++ trunk/Source/WebInspectorUI/ChangeLog        2016-03-03 00:21:00 UTC (rev 197473)
</span><span class="lines">@@ -1,3 +1,80 @@
</span><ins>+2016-03-02  Matt Baker  &lt;mattbaker@apple.com&gt;
+
+        Web Inspector: Timelines UI redesign: add the timelines tree outline to the TimelineOverview
+        https://bugs.webkit.org/show_bug.cgi?id=153034
+        &lt;rdar://problem/24195628&gt;
+
+        Reviewed by Timothy Hatcher.
+
+        Move the Timelines tree outline to the overview, in preparation for &lt;https://webkit.org/b/153036&gt;.
+
+        * UserInterface/Views/OverviewTimelineView.css:
+        (.timeline-view.overview &gt; .timeline-ruler &gt; .header): Deleted.
+        (.timeline-view.overview &gt; .timeline-ruler &gt; .event-markers): Deleted.
+        These are now part of the default ruler style.
+
+        * UserInterface/Views/TimelineOverview.css:
+        (.timeline-overview &gt; .tree-outline.timelines):
+        (.timeline-overview &gt; .tree-outline.timelines::before):
+        (body.window-inactive .timeline-overview &gt; .tree-outline.timelines):
+        (.timeline-overview.frames &gt; .tree-outline.timelines):
+        (.timeline-overview &gt; .tree-outline.timelines .close-button):
+        (.timeline-overview &gt; .tree-outline.timelines .item.selected .close-button):
+        (.timeline-overview &gt; .tree-outline.timelines .item:not(.selected):nth-child(even)):
+        (.timeline-overview &gt; .tree-outline.timelines .item:not(.selected):not(:first-child)):
+        (.timeline-overview &gt; .tree-outline.timelines .item.selected + .item):
+        (body.window-inactive .timeline-overview &gt; .tree-outline.timelines .item.selected + .item):
+        (.timeline-overview &gt; .tree-outline.timelines :focus .item.selected + .item):
+        (.timeline-overview &gt; .scroll-container):
+        (.timeline-overview.frames &gt; .scroll-container):
+        (.timeline-overview &gt; .timeline-ruler):
+        (.timeline-overview.frames &gt; .timeline-ruler):
+        (.timeline-overview &gt; .timeline-ruler &gt; .markers):
+        (.timeline-overview &gt; .graphs-container):
+        (.timeline-overview.frames &gt; .graphs-container):
+        Styles for the timelines tree outline. A content element is inserted before the
+        tree to fill the gap created by the timeline ruler. For now the tree has a fixed
+        width of 185px, and is hidden when displaying the FPS instrument.
+
+        * UserInterface/Views/TimelineOverview.js:
+        (WebInspector.TimelineOverview):
+        (WebInspector.TimelineOverview.prototype.get selectedTimeline):
+        (WebInspector.TimelineOverview.prototype.set selectedTimeline):
+        Make the selected timeline accessible to the parent view, since the overview doesn't
+        have a &quot;represented object&quot;, or receive ContentView change notifications.
+
+        (WebInspector.TimelineOverview.prototype._instrumentAdded):
+        (WebInspector.TimelineOverview.prototype._instrumentRemoved):
+        (WebInspector.TimelineOverview.prototype._viewModeDidChange):
+        Add and remove instrument tree elements. Each tree element is created with a height
+        equal to it's overview graph, and is shown/hidden based on the current view mode.
+
+        (WebInspector.TimelineOverview.prototype._timelinesTreeSelectionDidChange):
+        Update the selected timeline and dispatch change event.
+
+        * UserInterface/Views/TimelineRecordingContentView.js:
+        (WebInspector.TimelineRecordingContentView):
+        (WebInspector.TimelineRecordingContentView.prototype._currentContentViewDidChange):
+        (WebInspector.TimelineRecordingContentView.prototype._updateTimelineOverviewHeight):
+        (WebInspector.TimelineRecordingContentView.prototype._timelineSelected):
+        Sync the overview's timeline selection with the current ContentView's represented object.
+
+        * UserInterface/Views/TimelineRuler.css:
+        (.timeline-ruler &gt; .header):
+        (.timeline-ruler &gt; .header &gt; .divider &gt; .label):
+        (.timeline-ruler &gt; .selection-drag):
+        (.timeline-ruler &gt; .selection-handle):
+        Ruler height changed to 23px, to be consistent with the DataGrid header.
+
+        * UserInterface/Views/TreeOutline.css:
+        (.tree-outline.large .item .icon):
+        Large icon style updated to match TimelineSidebarPanel.css. The 32px
+        size is outdated and no longer used.
+
+        * UserInterface/Views/Variables.css:
+        (:root):
+        New color variables, used by TimelineOverview.css.
+
</ins><span class="cx"> 2016-02-29  Devin Rousso  &lt;dcrousso+webkit@gmail.com&gt;
</span><span class="cx"> 
</span><span class="cx">         Web Inspector: Add direct number inputs to Bezier editor
</span></span></pre></div>
<a id="trunkSourceWebInspectorUIUserInterfaceViewsOverviewTimelineViewcss"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebInspectorUI/UserInterface/Views/OverviewTimelineView.css (197472 => 197473)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebInspectorUI/UserInterface/Views/OverviewTimelineView.css        2016-03-03 00:19:05 UTC (rev 197472)
+++ trunk/Source/WebInspectorUI/UserInterface/Views/OverviewTimelineView.css        2016-03-03 00:21:00 UTC (rev 197473)
</span><span class="lines">@@ -38,6 +38,7 @@
</span><span class="cx"> 
</span><span class="cx"> .timeline-view.overview &gt; .timeline-ruler &gt; .event-markers {
</span><span class="cx">     top: 23px;
</span><ins>+    border-top: 1px solid var(--border-color);
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> .timeline-view.overview &gt; .data-grid {
</span></span></pre></div>
<a id="trunkSourceWebInspectorUIUserInterfaceViewsTimelineOverviewcss"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebInspectorUI/UserInterface/Views/TimelineOverview.css (197472 => 197473)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebInspectorUI/UserInterface/Views/TimelineOverview.css        2016-03-03 00:19:05 UTC (rev 197472)
+++ trunk/Source/WebInspectorUI/UserInterface/Views/TimelineOverview.css        2016-03-03 00:21:00 UTC (rev 197473)
</span><span class="lines">@@ -1,5 +1,5 @@
</span><span class="cx"> /*
</span><del>- * Copyright (C) 2013 Apple Inc. All rights reserved.
</del><ins>+ * Copyright (C) 2013, 2016 Apple Inc. All rights reserved.
</ins><span class="cx">  *
</span><span class="cx">  * Redistribution and use in source and binary forms, with or without
</span><span class="cx">  * modification, are permitted provided that the following conditions
</span><span class="lines">@@ -23,9 +23,67 @@
</span><span class="cx">  * THE POSSIBILITY OF SUCH DAMAGE.
</span><span class="cx">  */
</span><span class="cx"> 
</span><ins>+.timeline-overview &gt; .tree-outline.timelines {
+    position: absolute;
+    top: 0;
+    left: 0;
+    width: 185px;
+    z-index: var(--z-index-header);
+    background-color: var(--panel-background-color);
+    border-right: 1px solid var(--border-color);
+}
+
+.timeline-overview &gt; .tree-outline.timelines::before {
+    display: block;
+    content: &quot;&quot;;
+    left: 0;
+    top: 0;
+    width: 185px;
+    height: 23px;
+    box-sizing: border-box;
+    background-color: white;
+    border-right: 1px solid var(--border-color);
+    border-bottom: 1px solid var(--border-color);
+}
+
+.timeline-overview.frames &gt; .tree-outline.timelines {
+    display: none;
+}
+
+.timeline-overview &gt; .tree-outline.timelines .close-button {
+    width: 14px;
+
+    visibility: hidden;
+}
+
+.timeline-overview &gt; .tree-outline.timelines .item.selected .close-button {
+    visibility: visible;
+}
+
+.timeline-overview &gt; .tree-outline.timelines .item:not(.selected):nth-child(even) {
+    background-color: hsla(0, 0%, 0%, 0.03);
+    background-clip: padding-box;
+}
+
+.timeline-overview &gt; .tree-outline.timelines .item:not(.selected):not(:first-child) {
+    border-top: 1px solid hsla(0, 0%, 0%, 0.09);
+}
+
+.timeline-overview &gt; .tree-outline.timelines .item.selected + .item {
+    border-top-color: hsl(0, 0%, 83%);
+}
+
+body.window-inactive .timeline-overview &gt; .tree-outline.timelines .item.selected + .item {
+    border-top-color: hsl(0, 0%, 83%);
+}
+
+.timeline-overview &gt; .tree-outline.timelines :focus .item.selected + .item {
+    border-top-color: hsl(209, 100%, 49%);
+}
+
</ins><span class="cx"> .timeline-overview &gt; .scroll-container {
</span><span class="cx">     position: absolute;
</span><del>-    left: 0;
</del><ins>+    left: 185px;
</ins><span class="cx">     right: 0;
</span><span class="cx">     bottom: 0;
</span><span class="cx">     height: 16px;
</span><span class="lines">@@ -37,6 +95,10 @@
</span><span class="cx">     z-index: calc(var(--z-index-resizer) + 1);
</span><span class="cx"> }
</span><span class="cx"> 
</span><ins>+.timeline-overview.frames &gt; .scroll-container {
+    left: 0;
+}
+
</ins><span class="cx"> .timeline-overview:hover &gt; .scroll-container {
</span><span class="cx">     opacity: 0.75;
</span><span class="cx"> }
</span><span class="lines">@@ -48,13 +110,17 @@
</span><span class="cx"> .timeline-overview &gt; .timeline-ruler {
</span><span class="cx">     position: absolute;
</span><span class="cx">     top: 0;
</span><del>-    left: 0;
</del><ins>+    left: 185px;
</ins><span class="cx">     bottom: 0;
</span><span class="cx">     right: 0;
</span><span class="cx"> }
</span><span class="cx"> 
</span><ins>+.timeline-overview.frames &gt; .timeline-ruler {
+    left: 0;
+}
+
</ins><span class="cx"> .timeline-overview &gt; .timeline-ruler &gt; .markers {
</span><del>-    top: 28px;
</del><ins>+    top: 23px;
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> .timeline-overview.frames &gt; .timeline-ruler &gt; .markers &gt; .marker:not(.current-time) {
</span><span class="lines">@@ -76,12 +142,16 @@
</span><span class="cx"> 
</span><span class="cx"> .timeline-overview &gt; .graphs-container {
</span><span class="cx">     position: absolute;
</span><del>-    top: 29px;
-    left: 0;
</del><ins>+    top: 23px;
+    left: 185px;
</ins><span class="cx">     bottom: 0;
</span><span class="cx">     right: 0;
</span><span class="cx"> }
</span><span class="cx"> 
</span><ins>+.timeline-overview.frames &gt; .graphs-container {
+    left: 0;
+}
+
</ins><span class="cx"> body.mac-platform.legacy .timeline-overview &gt; .graphs-container {
</span><span class="cx">     top: 22px;
</span><span class="cx"> }
</span></span></pre></div>
<a id="trunkSourceWebInspectorUIUserInterfaceViewsTimelineOverviewjs"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebInspectorUI/UserInterface/Views/TimelineOverview.js (197472 => 197473)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebInspectorUI/UserInterface/Views/TimelineOverview.js        2016-03-03 00:19:05 UTC (rev 197472)
+++ trunk/Source/WebInspectorUI/UserInterface/Views/TimelineOverview.js        2016-03-03 00:21:00 UTC (rev 197473)
</span><span class="lines">@@ -1,5 +1,5 @@
</span><span class="cx"> /*
</span><del>- * Copyright (C) 2013, 2015 Apple Inc. All rights reserved.
</del><ins>+ * Copyright (C) 2013, 2015-2016 Apple Inc. All rights reserved.
</ins><span class="cx">  *
</span><span class="cx">  * Redistribution and use in source and binary forms, with or without
</span><span class="cx">  * modification, are permitted provided that the following conditions
</span><span class="lines">@@ -57,6 +57,15 @@
</span><span class="cx"> 
</span><span class="cx">         this._overviewGraphsByTypeMap = new Map;
</span><span class="cx"> 
</span><ins>+        this._timelinesTreeOutline = new WebInspector.TreeOutline;
+        this._timelinesTreeOutline.element.classList.add(&quot;timelines&quot;);
+        this._timelinesTreeOutline.disclosureButtons = false;
+        this._timelinesTreeOutline.large = true;
+        this._timelinesTreeOutline.addEventListener(WebInspector.TreeOutline.Event.SelectionDidChange, this._timelinesTreeSelectionDidChange, this);
+        this.element.appendChild(this._timelinesTreeOutline.element);
+
+        this._treeElementsByTypeMap = new Map;
+
</ins><span class="cx">         this._timelineRuler = new WebInspector.TimelineRuler;
</span><span class="cx">         this._timelineRuler.allowsClippedLabels = true;
</span><span class="cx">         this._timelineRuler.allowsTimeRangeSelection = true;
</span><span class="lines">@@ -86,6 +95,7 @@
</span><span class="cx">         this._cachedScrollContainerWidth = NaN;
</span><span class="cx">         this._timelineRulerSelectionChanged = false;
</span><span class="cx">         this._viewMode = WebInspector.TimelineOverview.ViewMode.Timelines;
</span><ins>+        this._selectedTimeline = null;;
</ins><span class="cx"> 
</span><span class="cx">         for (let instrument of this._recording.instruments)
</span><span class="cx">             this._instrumentAdded(instrument);
</span><span class="lines">@@ -98,6 +108,28 @@
</span><span class="cx"> 
</span><span class="cx">     // Public
</span><span class="cx"> 
</span><ins>+    get selectedTimeline()
+    {
+        return this._selectedTimeline;
+    }
+
+    set selectedTimeline(x)
+    {
+        if (this._selectedTimeline === x)
+            return;
+
+        this._selectedTimeline = x;
+        if (this._selectedTimeline) {
+            let treeElement = this._treeElementsByTypeMap.get(this._selectedTimeline.type);
+            console.assert(treeElement, &quot;Missing tree element for timeline&quot;, this._selectedTimeline);
+
+            let omitFocus = true;
+            let wasSelectedByUser = false;
+            treeElement.select(omitFocus, wasSelectedByUser);
+        } else if (this._timelinesTreeOutline.selectedTreeElement)
+            this._timelinesTreeOutline.selectedTreeElement.deselect();
+    }
+
</ins><span class="cx">     get viewMode()
</span><span class="cx">     {
</span><span class="cx">         return this._viewMode;
</span><span class="lines">@@ -546,6 +578,7 @@
</span><span class="cx"> 
</span><span class="cx">         let timeline = this._recording.timelineForInstrument(instrument);
</span><span class="cx">         console.assert(!this._overviewGraphsByTypeMap.has(timeline.type), timeline);
</span><ins>+        console.assert(!this._treeElementsByTypeMap.has(timeline.type), timeline);
</ins><span class="cx"> 
</span><span class="cx">         let overviewGraph = WebInspector.TimelineOverviewGraph.createForTimeline(timeline, this);
</span><span class="cx">         overviewGraph.addEventListener(WebInspector.TimelineOverviewGraph.Event.RecordSelected, this._recordSelected, this);
</span><span class="lines">@@ -553,8 +586,24 @@
</span><span class="cx"> 
</span><span class="cx">         this._graphsContainerView.addSubview(overviewGraph);
</span><span class="cx"> 
</span><del>-        if (!this._canShowTimelineType(timeline.type))
</del><ins>+        let displayName = WebInspector.TimelineTabContentView.displayNameForTimeline(timeline);
+        let iconClassName = WebInspector.TimelineTabContentView.iconClassNameForTimeline(timeline);
+        let genericClassName = WebInspector.TimelineTabContentView.genericClassNameForTimeline(timeline);
+        let treeElement = new WebInspector.GeneralTreeElement([iconClassName, genericClassName], displayName, null, timeline);
+        let tooltip = WebInspector.UIString(&quot;Close %s timeline view&quot;).format(displayName);
+        let button = new WebInspector.TreeElementStatusButton(useSVGSymbol(&quot;Images/CloseLarge.svg&quot;, &quot;close-button&quot;, tooltip));
+        button.addEventListener(WebInspector.TreeElementStatusButton.Event.Clicked, () =&gt; { treeElement.deselect(); });
+        treeElement.status = button.element;
+
+        this._timelinesTreeOutline.appendChild(treeElement);
+        treeElement.element.style.height = overviewGraph.height + &quot;px&quot;;
+
+        this._treeElementsByTypeMap.set(timeline.type, treeElement);
+
+        if (!this._canShowTimelineType(timeline.type)) {
</ins><span class="cx">             overviewGraph.hidden();
</span><ins>+            treeElement.hidden = true;
+        }
</ins><span class="cx">     }
</span><span class="cx"> 
</span><span class="cx">     _instrumentRemoved(event)
</span><span class="lines">@@ -568,6 +617,11 @@
</span><span class="cx">         let overviewGraph = this._overviewGraphsByTypeMap.take(timeline.type);
</span><span class="cx">         overviewGraph.removeEventListener(WebInspector.TimelineOverviewGraph.Event.RecordSelected, this._recordSelected, this);
</span><span class="cx">         this._graphsContainerView.removeSubview(overviewGraph);
</span><ins>+
+        let treeElement = this._treeElementsByTypeMap.take(timeline.type);
+        let shouldSuppressOnDeselect = false;
+        let shouldSuppressSelectSibling = true;
+        this._timelinesTreeOutline.removeChild(treeElement, shouldSuppressOnDeselect, shouldSuppressSelectSibling);
</ins><span class="cx">     }
</span><span class="cx"> 
</span><span class="cx">     _markerAdded(event)
</span><span class="lines">@@ -675,10 +729,14 @@
</span><span class="cx">         this.selectionDuration = this._currentSettings.selectionDurationSetting.value;
</span><span class="cx"> 
</span><span class="cx">         for (let [type, overviewGraph] of this._overviewGraphsByTypeMap) {
</span><del>-            if (this._canShowTimelineType(type))
</del><ins>+            let treeElement = this._treeElementsByTypeMap.get(type);
+            console.assert(treeElement, &quot;Missing tree element for timeline type&quot;, type)
+
+            treeElement.hidden = !this._canShowTimelineType(type);
+            if (treeElement.hidden)
+                overviewGraph.hidden();
+            else
</ins><span class="cx">                 overviewGraph.shown();
</span><del>-            else
-                overviewGraph.hidden();
</del><span class="cx">         }
</span><span class="cx"> 
</span><span class="cx">         this.element.classList.toggle(&quot;frames&quot;, isRenderingFramesMode);
</span><span class="lines">@@ -706,6 +764,20 @@
</span><span class="cx">     {
</span><span class="cx">         return this._viewMode === WebInspector.TimelineOverview.ViewMode.Timelines ? this._timelinesViewModeSettings : this._renderingFramesViewModeSettings;
</span><span class="cx">     }
</span><ins>+
+    _timelinesTreeSelectionDidChange()
+    {
+        let treeElement = this._timelinesTreeOutline.selectedTreeElement;
+        let timeline = null;
+        if (treeElement) {
+            timeline = treeElement.representedObject;
+            console.assert(timeline instanceof WebInspector.Timeline, timeline);
+            console.assert(this._recording.timelines.get(timeline.type) === timeline, timeline);
+        }
+
+        this._selectedTimeline = timeline;
+        this.dispatchEventToListeners(WebInspector.TimelineOverview.Event.TimelineSelected);
+    }
</ins><span class="cx"> };
</span><span class="cx"> 
</span><span class="cx"> WebInspector.TimelineOverview.ScrollDeltaDenominator = 500;
</span><span class="lines">@@ -717,5 +789,6 @@
</span><span class="cx"> 
</span><span class="cx"> WebInspector.TimelineOverview.Event = {
</span><span class="cx">     RecordSelected: &quot;timeline-overview-record-selected&quot;,
</span><ins>+    TimelineSelected: &quot;timeline-overview-timeline-selected&quot;,
</ins><span class="cx">     TimeRangeSelectionChanged: &quot;timeline-overview-time-range-selection-changed&quot;
</span><span class="cx"> };
</span></span></pre></div>
<a id="trunkSourceWebInspectorUIUserInterfaceViewsTimelineRecordingContentViewjs"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebInspectorUI/UserInterface/Views/TimelineRecordingContentView.js (197472 => 197473)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebInspectorUI/UserInterface/Views/TimelineRecordingContentView.js        2016-03-03 00:19:05 UTC (rev 197472)
+++ trunk/Source/WebInspectorUI/UserInterface/Views/TimelineRecordingContentView.js        2016-03-03 00:21:00 UTC (rev 197473)
</span><span class="lines">@@ -41,6 +41,7 @@
</span><span class="cx">         this._timelineOverview = new WebInspector.TimelineOverview(this._recording);
</span><span class="cx">         this._timelineOverview.addEventListener(WebInspector.TimelineOverview.Event.TimeRangeSelectionChanged, this._timeRangeSelectionChanged, this);
</span><span class="cx">         this._timelineOverview.addEventListener(WebInspector.TimelineOverview.Event.RecordSelected, this._recordSelected, this);
</span><ins>+        this._timelineOverview.addEventListener(WebInspector.TimelineOverview.Event.TimelineSelected, this._timelineSelected, this);
</ins><span class="cx">         this.addSubview(this._timelineOverview);
</span><span class="cx"> 
</span><span class="cx">         this._contentViewContainer = new WebInspector.ContentViewContainer;
</span><span class="lines">@@ -338,6 +339,12 @@
</span><span class="cx"> 
</span><span class="cx">             this._updateTimelineViewSelection(timelineView);
</span><span class="cx">             timelineView.currentTime = this._currentTime;
</span><ins>+
+            let timeline = null;
+            if (timelineView.representedObject instanceof WebInspector.Timeline)
+                timeline = timelineView.representedObject;
+
+            this._timelineOverview.selectedTimeline = timeline;
</ins><span class="cx">         }
</span><span class="cx"> 
</span><span class="cx">         this.dispatchEventToListeners(WebInspector.ContentView.Event.SelectionPathComponentsDidChange);
</span><span class="lines">@@ -528,7 +535,7 @@
</span><span class="cx"> 
</span><span class="cx">     _updateTimelineOverviewHeight()
</span><span class="cx">     {
</span><del>-        const rulerHeight = 29;
</del><ins>+        const rulerHeight = 23;
</ins><span class="cx">         
</span><span class="cx">         let styleValue = (rulerHeight + this.timelineOverviewHeight) + &quot;px&quot;;
</span><span class="cx">         this._timelineOverview.element.style.height = styleValue;
</span><span class="lines">@@ -668,6 +675,15 @@
</span><span class="cx">         treeElement.revealAndSelect(false, false, false, true);
</span><span class="cx">     }
</span><span class="cx"> 
</span><ins>+    _timelineSelected()
+    {
+        let timeline = this._timelineOverview.selectedTimeline;
+        if (timeline)
+            this.showTimelineViewForTimeline(timeline);
+        else
+            this.showOverviewTimelineView();
+    }
+
</ins><span class="cx">     _updateFrameSelection()
</span><span class="cx">     {
</span><span class="cx">         console.assert(this._renderingFrameTimeline);
</span></span></pre></div>
<a id="trunkSourceWebInspectorUIUserInterfaceViewsTimelineRulercss"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebInspectorUI/UserInterface/Views/TimelineRuler.css (197472 => 197473)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebInspectorUI/UserInterface/Views/TimelineRuler.css        2016-03-03 00:19:05 UTC (rev 197472)
+++ trunk/Source/WebInspectorUI/UserInterface/Views/TimelineRuler.css        2016-03-03 00:21:00 UTC (rev 197473)
</span><span class="lines">@@ -49,7 +49,7 @@
</span><span class="cx">     top: 0;
</span><span class="cx">     left: 0;
</span><span class="cx">     right: 0;
</span><del>-    height: 29px;
</del><ins>+    height: 23px;
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> .timeline-ruler &gt; .header &gt; .divider {
</span><span class="lines">@@ -67,7 +67,7 @@
</span><span class="cx"> 
</span><span class="cx"> .timeline-ruler &gt; .header &gt; .divider &gt; .label {
</span><span class="cx">     position: absolute;
</span><del>-    top: 8px;
</del><ins>+    top: 6px;
</ins><span class="cx">     right: 5px;
</span><span class="cx">     font-size: 9px;
</span><span class="cx">     color: hsl(0, 0%, 50%);
</span><span class="lines">@@ -156,7 +156,7 @@
</span><span class="cx"> .timeline-ruler &gt; .selection-drag {
</span><span class="cx">     position: absolute;
</span><span class="cx">     top: 0;
</span><del>-    height: 29px;
</del><ins>+    height: 23px;
</ins><span class="cx">     cursor: -webkit-grab;
</span><span class="cx">     pointer-events: all;
</span><span class="cx"> }
</span><span class="lines">@@ -169,7 +169,7 @@
</span><span class="cx">     position: absolute;
</span><span class="cx">     top: 0;
</span><span class="cx">     width: 8px;
</span><del>-    height: 28px;
</del><ins>+    height: 22px;
</ins><span class="cx">     border-radius: 5px;
</span><span class="cx">     background-color: hsl(0, 0%, 64%);
</span><span class="cx">     border: 1px solid white;
</span></span></pre></div>
<a id="trunkSourceWebInspectorUIUserInterfaceViewsTreeOutlinecss"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebInspectorUI/UserInterface/Views/TreeOutline.css (197472 => 197473)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebInspectorUI/UserInterface/Views/TreeOutline.css        2016-03-03 00:19:05 UTC (rev 197472)
+++ trunk/Source/WebInspectorUI/UserInterface/Views/TreeOutline.css        2016-03-03 00:21:00 UTC (rev 197473)
</span><span class="lines">@@ -127,8 +127,11 @@
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> .tree-outline.large .item .icon {
</span><del>-    width: 32px;
</del><ins>+    margin-top: 5px;
</ins><span class="cx">     margin-right: 6px;
</span><ins>+
+    width: 24px;
+    height: 24px;
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> .tree-outline .item .status {
</span></span></pre>
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