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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/184515">184515</a></dd>
<dt>Author</dt> <dd>commit-queue@webkit.org</dd>
<dt>Date</dt> <dd>2015-05-18 15:16:59 -0700 (Mon, 18 May 2015)</dd>
</dl>

<h3>Log Message</h3>
<pre>Web Inspector: Improve Reliability of Closing and Reopening Elements Tab
https://bugs.webkit.org/show_bug.cgi?id=145139

Patch by Joseph Pecoraro &lt;pecoraro@apple.com&gt; on 2015-05-18
Reviewed by Timothy Hatcher.

* UserInterface/Views/DOMTreeElement.js:
(WebInspector.DOMTreeElement.prototype.highlightSearchResults):
(WebInspector.DOMTreeElement.prototype.hideSearchHighlights):
(WebInspector.DOMTreeElement.prototype.emphasizeSearchHighlight.animationEnded):
(WebInspector.DOMTreeElement.prototype.emphasizeSearchHighlight):
(WebInspector.DOMTreeElement.prototype._updateChildren):
(WebInspector.DOMTreeElement.prototype.adjustCollapsedRange):
(WebInspector.DOMTreeElement.prototype._startEditingAsHTML.dispose):
(WebInspector.DOMTreeElement.prototype._startEditingAsHTML):
(WebInspector.DOMTreeElement.prototype.updateTitle):
Stop using the `delete` operator.

* UserInterface/Views/DOMTreeOutline.js:
(WebInspector.DOMTreeOutline.prototype.setVisible):
Trigger an update when the outline is made visible.

* UserInterface/Views/FrameDOMTreeContentView.js:
(WebInspector.FrameDOMTreeContentView.prototype._rootDOMNodeAvailable):
Provide a reasonable default selection if there is no body or document element.
For example in an augmented DOM tree.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceWebInspectorUIChangeLog">trunk/Source/WebInspectorUI/ChangeLog</a></li>
<li><a href="#trunkSourceWebInspectorUIUserInterfaceViewsDOMTreeElementjs">trunk/Source/WebInspectorUI/UserInterface/Views/DOMTreeElement.js</a></li>
<li><a href="#trunkSourceWebInspectorUIUserInterfaceViewsDOMTreeOutlinejs">trunk/Source/WebInspectorUI/UserInterface/Views/DOMTreeOutline.js</a></li>
<li><a href="#trunkSourceWebInspectorUIUserInterfaceViewsFrameDOMTreeContentViewjs">trunk/Source/WebInspectorUI/UserInterface/Views/FrameDOMTreeContentView.js</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceWebInspectorUIChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebInspectorUI/ChangeLog (184514 => 184515)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebInspectorUI/ChangeLog        2015-05-18 22:09:53 UTC (rev 184514)
+++ trunk/Source/WebInspectorUI/ChangeLog        2015-05-18 22:16:59 UTC (rev 184515)
</span><span class="lines">@@ -1,5 +1,33 @@
</span><span class="cx"> 2015-05-18  Joseph Pecoraro  &lt;pecoraro@apple.com&gt;
</span><span class="cx"> 
</span><ins>+        Web Inspector: Improve Reliability of Closing and Reopening Elements Tab
+        https://bugs.webkit.org/show_bug.cgi?id=145139
+
+        Reviewed by Timothy Hatcher.
+
+        * UserInterface/Views/DOMTreeElement.js:
+        (WebInspector.DOMTreeElement.prototype.highlightSearchResults):
+        (WebInspector.DOMTreeElement.prototype.hideSearchHighlights):
+        (WebInspector.DOMTreeElement.prototype.emphasizeSearchHighlight.animationEnded):
+        (WebInspector.DOMTreeElement.prototype.emphasizeSearchHighlight):
+        (WebInspector.DOMTreeElement.prototype._updateChildren):
+        (WebInspector.DOMTreeElement.prototype.adjustCollapsedRange):
+        (WebInspector.DOMTreeElement.prototype._startEditingAsHTML.dispose):
+        (WebInspector.DOMTreeElement.prototype._startEditingAsHTML):
+        (WebInspector.DOMTreeElement.prototype.updateTitle):
+        Stop using the `delete` operator.
+
+        * UserInterface/Views/DOMTreeOutline.js:
+        (WebInspector.DOMTreeOutline.prototype.setVisible):
+        Trigger an update when the outline is made visible.
+
+        * UserInterface/Views/FrameDOMTreeContentView.js:
+        (WebInspector.FrameDOMTreeContentView.prototype._rootDOMNodeAvailable):
+        Provide a reasonable default selection if there is no body or document element.
+        For example in an augmented DOM tree.
+
+2015-05-18  Joseph Pecoraro  &lt;pecoraro@apple.com&gt;
+
</ins><span class="cx">         Web Inspector: Tab Restoration incorrectly makes ContentViews &quot;shown&quot; in background tabs
</span><span class="cx">         https://bugs.webkit.org/show_bug.cgi?id=145080
</span><span class="cx"> 
</span></span></pre></div>
<a id="trunkSourceWebInspectorUIUserInterfaceViewsDOMTreeElementjs"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebInspectorUI/UserInterface/Views/DOMTreeElement.js (184514 => 184515)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebInspectorUI/UserInterface/Views/DOMTreeElement.js        2015-05-18 22:09:53 UTC (rev 184514)
+++ trunk/Source/WebInspectorUI/UserInterface/Views/DOMTreeElement.js        2015-05-18 22:16:59 UTC (rev 184515)
</span><span class="lines">@@ -52,7 +52,7 @@
</span><span class="cx">     {
</span><span class="cx">         if (this._searchQuery !== searchQuery) {
</span><span class="cx">             this._updateSearchHighlight(false);
</span><del>-            delete this._highlightResult; // A new search query.
</del><ins>+            this._highlightResult = undefined; // A new search query.
</ins><span class="cx">         }
</span><span class="cx"> 
</span><span class="cx">         this._searchQuery = searchQuery;
</span><span class="lines">@@ -62,7 +62,7 @@
</span><span class="cx"> 
</span><span class="cx">     hideSearchHighlights()
</span><span class="cx">     {
</span><del>-        delete this._searchHighlightsVisible;
</del><ins>+        this._searchHighlightsVisible = false;
</ins><span class="cx">         this._updateSearchHighlight(false);
</span><span class="cx">     }
</span><span class="cx"> 
</span><span class="lines">@@ -93,7 +93,7 @@
</span><span class="cx">                 return;
</span><span class="cx"> 
</span><span class="cx">             this._bouncyHighlightElement.remove();
</span><del>-            delete this._bouncyHighlightElement;
</del><ins>+            this._bouncyHighlightElement = null;
</ins><span class="cx">         }
</span><span class="cx"> 
</span><span class="cx">         this._bouncyHighlightElement.addEventListener(&quot;webkitAnimationEnd&quot;, animationEnded.bind(this));
</span><span class="lines">@@ -407,7 +407,7 @@
</span><span class="cx">                 treeOutlineContainerElement.scrollTop = originalScrollTop;
</span><span class="cx">         }
</span><span class="cx"> 
</span><del>-        delete this._updateChildrenInProgress;
</del><ins>+        this._updateChildrenInProgress = false;
</ins><span class="cx">     }
</span><span class="cx"> 
</span><span class="cx">     adjustCollapsedRange()
</span><span class="lines">@@ -447,7 +447,7 @@
</span><span class="cx"> 
</span><span class="cx">             this.expandAllButtonElement.textContent = WebInspector.UIString(&quot;Show All Nodes (%d More)&quot;).format(childNodeCount - expandedChildCount);
</span><span class="cx">         } else if (this.expandAllButtonElement)
</span><del>-            delete this.expandAllButtonElement;
</del><ins>+            this.expandAllButtonElement = null;
</ins><span class="cx">     }
</span><span class="cx"> 
</span><span class="cx">     handleLoadAllChildren()
</span><span class="lines">@@ -839,7 +839,7 @@
</span><span class="cx"> 
</span><span class="cx">             // Remove editor.
</span><span class="cx">             this.listItemElement.removeChild(this._htmlEditElement);
</span><del>-            delete this._htmlEditElement;
</del><ins>+            this._htmlEditElement = null;
</ins><span class="cx">             // Unhide children item.
</span><span class="cx">             if (this._childrenListNode)
</span><span class="cx">                 this._childrenListNode.style.removeProperty(&quot;display&quot;);
</span><span class="lines">@@ -1030,10 +1030,10 @@
</span><span class="cx">         } else {
</span><span class="cx">             this.title = document.createElement(&quot;span&quot;);
</span><span class="cx">             this.title.appendChild(this._nodeTitleInfo().titleDOM);
</span><del>-            delete this._highlightResult;
</del><ins>+            this._highlightResult = undefined;
</ins><span class="cx">         }
</span><span class="cx"> 
</span><del>-        delete this.selectionElement;
</del><ins>+        this.selectionElement = null;
</ins><span class="cx">         this.updateSelection();
</span><span class="cx">         this._highlightSearchResults();
</span><span class="cx">     }
</span></span></pre></div>
<a id="trunkSourceWebInspectorUIUserInterfaceViewsDOMTreeOutlinejs"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebInspectorUI/UserInterface/Views/DOMTreeOutline.js (184514 => 184515)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebInspectorUI/UserInterface/Views/DOMTreeOutline.js        2015-05-18 22:09:53 UTC (rev 184514)
+++ trunk/Source/WebInspectorUI/UserInterface/Views/DOMTreeOutline.js        2015-05-18 22:16:59 UTC (rev 184515)
</span><span class="lines">@@ -89,8 +89,11 @@
</span><span class="cx">             return;
</span><span class="cx"> 
</span><span class="cx">         this._updateModifiedNodes();
</span><ins>+
</ins><span class="cx">         if (this._selectedDOMNode)
</span><span class="cx">             this._revealAndSelectNode(this._selectedDOMNode, omitFocus);
</span><ins>+
+        this.update();
</ins><span class="cx">     }
</span><span class="cx"> 
</span><span class="cx">     get rootDOMNode()
</span><span class="lines">@@ -176,7 +179,7 @@
</span><span class="cx">                 treeElement.selectable = this._selectEnabled;
</span><span class="cx">                 this.appendChild(treeElement);
</span><span class="cx">                 node = node.nextSibling;
</span><del>-                
</del><ins>+
</ins><span class="cx">                 if (treeElement.hasChildren &amp;&amp; !treeElement.expanded)
</span><span class="cx">                     treeElement.expand();
</span><span class="cx">             }
</span></span></pre></div>
<a id="trunkSourceWebInspectorUIUserInterfaceViewsFrameDOMTreeContentViewjs"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebInspectorUI/UserInterface/Views/FrameDOMTreeContentView.js (184514 => 184515)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebInspectorUI/UserInterface/Views/FrameDOMTreeContentView.js        2015-05-18 22:09:53 UTC (rev 184514)
+++ trunk/Source/WebInspectorUI/UserInterface/Views/FrameDOMTreeContentView.js        2015-05-18 22:16:59 UTC (rev 184515)
</span><span class="lines">@@ -72,7 +72,7 @@
</span><span class="cx">             return;
</span><span class="cx">         }
</span><span class="cx"> 
</span><del>-        this._restoreSelectedNodeAfterUpdate(this._domTree.frame.url, rootDOMNode.body || rootDOMNode.documentElement);
</del><ins>+        this._restoreSelectedNodeAfterUpdate(this._domTree.frame.url, rootDOMNode.body || rootDOMNode.documentElement || rootDOMNode.firstChild);
</ins><span class="cx">     },
</span><span class="cx"> 
</span><span class="cx">     _rootDOMNodeInvalidated: function(event)
</span></span></pre>
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