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<div id="msg">
<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/193213">193213</a></dd>
<dt>Author</dt> <dd>timothy@apple.com</dd>
<dt>Date</dt> <dd>2015-12-03 10:58:15 -0800 (Thu, 03 Dec 2015)</dd>
</dl>

<h3>Log Message</h3>
<pre>Merge <a href="http://trac.webkit.org/projects/webkit/changeset/189815">r189815</a>. rdar://problem/23221163</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#branchessafari601branchSourceWebInspectorUIChangeLog">branches/safari-601-branch/Source/WebInspectorUI/ChangeLog</a></li>
<li><a href="#branchessafari601branchSourceWebInspectorUIUserInterfaceBaseMainjs">branches/safari-601-branch/Source/WebInspectorUI/UserInterface/Base/Main.js</a></li>
<li><a href="#branchessafari601branchSourceWebInspectorUIUserInterfaceViewsNewTabContentViewjs">branches/safari-601-branch/Source/WebInspectorUI/UserInterface/Views/NewTabContentView.js</a></li>
<li><a href="#branchessafari601branchSourceWebInspectorUIUserInterfaceViewsTabBarcss">branches/safari-601-branch/Source/WebInspectorUI/UserInterface/Views/TabBar.css</a></li>
<li><a href="#branchessafari601branchSourceWebInspectorUIUserInterfaceViewsTabBarjs">branches/safari-601-branch/Source/WebInspectorUI/UserInterface/Views/TabBar.js</a></li>
<li><a href="#branchessafari601branchSourceWebInspectorUIUserInterfaceViewsTabBarItemjs">branches/safari-601-branch/Source/WebInspectorUI/UserInterface/Views/TabBarItem.js</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="branchessafari601branchSourceWebInspectorUIChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-601-branch/Source/WebInspectorUI/ChangeLog (193212 => 193213)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-601-branch/Source/WebInspectorUI/ChangeLog        2015-12-03 18:58:08 UTC (rev 193212)
+++ branches/safari-601-branch/Source/WebInspectorUI/ChangeLog        2015-12-03 18:58:15 UTC (rev 193213)
</span><span class="lines">@@ -1,5 +1,68 @@
</span><span class="cx"> 2015-12-02  Timothy Hatcher  &lt;timothy@apple.com&gt;
</span><span class="cx"> 
</span><ins>+        Merge r189815. rdar://problem/23221163
+
+    2015-09-15  Joseph Pecoraro  &lt;pecoraro@apple.com&gt;
+
+            Web Inspector: Closing the final inspector tab should be allowed
+            https://bugs.webkit.org/show_bug.cgi?id=149130
+
+            Reviewed by Brian Burg.
+
+            Previously we did not allow closing the last inspector tab. Now, we
+            will allow closing all inspector tabs, and when the last is closed,
+            present an unclosable New Tab tab, which would then be used to create
+            a new tab.
+
+            * UserInterface/Base/Main.js:
+            (WebInspector.contentLoaded):
+            If we have no tabs to restore, show the New Tab tab.
+
+            (WebInspector._openDefaultTab):
+            When the last tab is closed, the tab bar requests we open a default tab.
+            Open the New Tab tab.
+
+            (WebInspector.TabBar.prototype._handleClick):
+            Disallow closing the single default tab.
+
+            (WebInspector._newTabItemClicked):
+            (WebInspector.showNewTabTab):
+            Share logic for showing the New Tab tab.
+
+            * UserInterface/Views/NewTabContentView.js:
+            (WebInspector.NewTabContentView):
+            Mark the new tab's tab bar item as the &quot;default&quot; tab bar item. It gets
+            special behavior when it is the single normal tab (cannot be closed).
+
+            * UserInterface/Views/TabBar.css:
+            (body:not(.window-inactive) .tab-bar &gt; .item:hover &gt; .close):
+            (body:not(.window-inactive) .tab-bar.single-tab &gt; .item.default-tab:hover &gt; .close):
+            (.tab-bar.single-tab &gt; .item.default-tab &gt; .close):
+            (body:not(.window-inactive) .tab-bar:not(.single-tab) &gt; .item:not(.hide-close-button):hover &gt; .close): Deleted.
+            (.tab-bar &gt; .item.hide-close-button &gt; .close): Deleted.
+            Update styles to only disable the close button on the
+            &quot;default-tab&quot; when it is the &quot;single-tab&quot; open. Otherwise
+            always allow closing tabs.
+
+            * UserInterface/Views/TabBar.js:
+            (WebInspector.TabBar.prototype.removeTabBarItem):
+            (WebInspector.TabBar.prototype.hasNormalTab):
+            (WebInspector.TabBar.prototype._openDefaultTab):
+            When removing the last normal tab, send an event to open
+            the default tab.
+
+            * UserInterface/Views/TabBarItem.js:
+            (WebInspector.TabBarItem.prototype.get default):
+            (WebInspector.TabBarItem.prototype.get isDefaultTab):
+            (WebInspector.TabBarItem.prototype.set isDefaultTab):
+            (WebInspector.TabBarItem.prototype.get hideCloseButton): Deleted.
+            (WebInspector.TabBarItem.prototype.set hideCloseButton): Deleted.
+            Switch to marking a tab bar item as the default tab. This tab
+            will be allowed when it is the single remaining tab. Currently
+            the default tab is always the &quot;New Tab&quot; tab.
+
+2015-12-02  Timothy Hatcher  &lt;timothy@apple.com&gt;
+
</ins><span class="cx">         Merge r189814. rdar://problem/23221163
</span><span class="cx"> 
</span><span class="cx">     2015-09-15  Brian Burg  &lt;bburg@apple.com&gt;
</span></span></pre></div>
<a id="branchessafari601branchSourceWebInspectorUIUserInterfaceBaseMainjs"></a>
<div class="modfile"><h4>Modified: branches/safari-601-branch/Source/WebInspectorUI/UserInterface/Base/Main.js (193212 => 193213)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-601-branch/Source/WebInspectorUI/UserInterface/Base/Main.js        2015-12-03 18:58:08 UTC (rev 193212)
+++ branches/safari-601-branch/Source/WebInspectorUI/UserInterface/Base/Main.js        2015-12-03 18:58:15 UTC (rev 193213)
</span><span class="lines">@@ -212,6 +212,7 @@
</span><span class="cx"> 
</span><span class="cx">     this.tabBar = new WebInspector.TabBar(document.getElementById(&quot;tab-bar&quot;));
</span><span class="cx">     this.tabBar.addEventListener(WebInspector.TabBar.Event.NewTabItemClicked, this._newTabItemClicked, this);
</span><ins>+    this.tabBar.addEventListener(WebInspector.TabBar.Event.OpenDefaultTab, this._openDefaultTab, this);
</ins><span class="cx"> 
</span><span class="cx">     var contentElement = document.getElementById(&quot;content&quot;);
</span><span class="cx">     contentElement.setAttribute(&quot;role&quot;, &quot;main&quot;);
</span><span class="lines">@@ -371,6 +372,9 @@
</span><span class="cx">     if (!this.tabBar.selectedTabBarItem)
</span><span class="cx">         this.tabBar.selectedTabBarItem = 0;
</span><span class="cx"> 
</span><ins>+    if (!this.tabBar.hasNormalTab())
+        this.showNewTabTab();
+
</ins><span class="cx">     // Listen to the events after restoring the saved tabs to avoid recursion.
</span><span class="cx">     this.tabBar.addEventListener(WebInspector.TabBar.Event.TabBarItemAdded, this._rememberOpenTabs, this);
</span><span class="cx">     this.tabBar.addEventListener(WebInspector.TabBar.Event.TabBarItemRemoved, this._rememberOpenTabs, this);
</span><span class="lines">@@ -469,10 +473,21 @@
</span><span class="cx"> 
</span><span class="cx"> WebInspector._newTabItemClicked = function(event)
</span><span class="cx"> {
</span><ins>+    var shouldAnimate = true;
+    this.showNewTabTab(shouldAnimate);
+};
+
+WebInspector._openDefaultTab = function(event)
+{
+    this.showNewTabTab();
+};
+
+WebInspector.showNewTabTab = function(shouldAnimate)
+{
</ins><span class="cx">     var tabContentView = this.tabBrowser.bestTabContentViewForClass(WebInspector.NewTabContentView);
</span><span class="cx">     if (!tabContentView)
</span><span class="cx">         tabContentView = new WebInspector.NewTabContentView;
</span><del>-    this.tabBrowser.showTabForContentView(tabContentView);
</del><ins>+    this.tabBrowser.showTabForContentView(tabContentView, !shouldAnimate);
</ins><span class="cx"> };
</span><span class="cx"> 
</span><span class="cx"> WebInspector.isNewTabWithTypeAllowed = function(tabType)
</span></span></pre></div>
<a id="branchessafari601branchSourceWebInspectorUIUserInterfaceViewsNewTabContentViewjs"></a>
<div class="modfile"><h4>Modified: branches/safari-601-branch/Source/WebInspectorUI/UserInterface/Views/NewTabContentView.js (193212 => 193213)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-601-branch/Source/WebInspectorUI/UserInterface/Views/NewTabContentView.js        2015-12-03 18:58:08 UTC (rev 193212)
+++ branches/safari-601-branch/Source/WebInspectorUI/UserInterface/Views/NewTabContentView.js        2015-12-03 18:58:15 UTC (rev 193213)
</span><span class="lines">@@ -28,6 +28,7 @@
</span><span class="cx">     constructor(identifier)
</span><span class="cx">     {
</span><span class="cx">         var tabBarItem = new WebInspector.TabBarItem(&quot;Images/NewTab.svg&quot;, WebInspector.UIString(&quot;New Tab&quot;));
</span><ins>+        tabBarItem.isDefaultTab = true;
</ins><span class="cx"> 
</span><span class="cx">         super(identifier || &quot;new-tab&quot;, &quot;new-tab&quot;, tabBarItem);
</span><span class="cx"> 
</span></span></pre></div>
<a id="branchessafari601branchSourceWebInspectorUIUserInterfaceViewsTabBarcss"></a>
<div class="modfile"><h4>Modified: branches/safari-601-branch/Source/WebInspectorUI/UserInterface/Views/TabBar.css (193212 => 193213)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-601-branch/Source/WebInspectorUI/UserInterface/Views/TabBar.css        2015-12-03 18:58:08 UTC (rev 193212)
+++ branches/safari-601-branch/Source/WebInspectorUI/UserInterface/Views/TabBar.css        2015-12-03 18:58:15 UTC (rev 193213)
</span><span class="lines">@@ -164,12 +164,15 @@
</span><span class="cx">     transition-delay: 0, 50ms;
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-body:not(.window-inactive) .tab-bar:not(.single-tab) &gt; .item:not(.hide-close-button):hover &gt; .close {
</del><ins>+body:not(.window-inactive) .tab-bar &gt; .item:hover &gt; .close {
</ins><span class="cx">     opacity: 0.6;
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-.tab-bar.single-tab &gt; .item &gt; .close,
-.tab-bar &gt; .item.hide-close-button &gt; .close {
</del><ins>+body:not(.window-inactive) .tab-bar.single-tab &gt; .item.default-tab:hover &gt; .close {
+    opacity: 0;
+}
+
+.tab-bar.single-tab &gt; .item.default-tab &gt; .close {
</ins><span class="cx">     pointer-events: none;
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="lines">@@ -266,12 +269,12 @@
</span><span class="cx">     display: none;
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-.tab-bar.collapsed:not(.hide-titles) &gt; .item:not(.pinned, .hide-close-button):hover &gt; .icon,
</del><ins>+.tab-bar.collapsed:not(.hide-titles) &gt; .item:not(.pinned, .default-tab):hover &gt; .icon,
</ins><span class="cx"> .tab-bar.hide-titles &gt; .item.selected:hover &gt; .icon {
</span><span class="cx">     display: none;
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-.tab-bar.collapsed:not(.hide-titles) &gt; .item:not(.hide-close-button):hover &gt; .close,
</del><ins>+.tab-bar.collapsed:not(.hide-titles) &gt; .item:not(.default-tab):hover &gt; .close,
</ins><span class="cx"> .tab-bar.hide-titles &gt; .item.selected:hover &gt; .close {
</span><span class="cx">     display: inline-block;
</span><span class="cx"> }
</span></span></pre></div>
<a id="branchessafari601branchSourceWebInspectorUIUserInterfaceViewsTabBarjs"></a>
<div class="modfile"><h4>Modified: branches/safari-601-branch/Source/WebInspectorUI/UserInterface/Views/TabBar.js (193212 => 193213)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-601-branch/Source/WebInspectorUI/UserInterface/Views/TabBar.js        2015-12-03 18:58:08 UTC (rev 193212)
+++ branches/safari-601-branch/Source/WebInspectorUI/UserInterface/Views/TabBar.js        2015-12-03 18:58:15 UTC (rev 193213)
</span><span class="lines">@@ -221,6 +221,10 @@
</span><span class="cx">         var hasMoreThanOneNormalTab = this._hasMoreThanOneNormalTab();
</span><span class="cx">         this._element.classList.toggle(&quot;single-tab&quot;, !hasMoreThanOneNormalTab);
</span><span class="cx"> 
</span><ins>+        var shouldOpenDefaultTab = !tabBarItem.isDefaultTab &amp;&amp; !this.hasNormalTab();
+        if (shouldOpenDefaultTab)
+            doNotAnimate = true;
+
</ins><span class="cx">         if (!hasMoreThanOneNormalTab || wasLastNormalTab || !doNotExpand) {
</span><span class="cx">             if (!doNotAnimate) {
</span><span class="cx">                 this._tabAnimatedClosedSinceMouseEnter = true;
</span><span class="lines">@@ -230,6 +234,9 @@
</span><span class="cx"> 
</span><span class="cx">             this.dispatchEventToListeners(WebInspector.TabBar.Event.TabBarItemRemoved, {tabBarItem});
</span><span class="cx"> 
</span><ins>+            if (shouldOpenDefaultTab)
+                this._openDefaultTab();
+
</ins><span class="cx">             return tabBarItem;
</span><span class="cx">         }
</span><span class="cx"> 
</span><span class="lines">@@ -291,6 +298,9 @@
</span><span class="cx"> 
</span><span class="cx">         this.dispatchEventToListeners(WebInspector.TabBar.Event.TabBarItemRemoved, {tabBarItem});
</span><span class="cx"> 
</span><ins>+        if (shouldOpenDefaultTab)
+            this._openDefaultTab();
+
</ins><span class="cx">         return tabBarItem;
</span><span class="cx">     }
</span><span class="cx"> 
</span><span class="lines">@@ -430,6 +440,11 @@
</span><span class="cx">         return this._element;
</span><span class="cx">     }
</span><span class="cx"> 
</span><ins>+    hasNormalTab()
+    {
+        return this._tabBarItems.some((tab) =&gt; !tab.pinned);
+    }
+
</ins><span class="cx">     // Private
</span><span class="cx"> 
</span><span class="cx">     _findTabBarItem(tabBarItemOrIndex)
</span><span class="lines">@@ -459,6 +474,11 @@
</span><span class="cx">         return false;
</span><span class="cx">     }
</span><span class="cx"> 
</span><ins>+    _openDefaultTab()
+    {
+        this.dispatchEventToListeners(WebInspector.TabBar.Event.OpenDefaultTab);
+    }
+
</ins><span class="cx">     _recordTabBarItemSizesAndPositions()
</span><span class="cx">     {
</span><span class="cx">         var tabBarItemSizesAndPositions = new Map;
</span><span class="lines">@@ -608,8 +628,13 @@
</span><span class="cx">         var clickedMiddleButton = event.button === 1;
</span><span class="cx"> 
</span><span class="cx">         var closeButtonElement = event.target.enclosingNodeOrSelfWithClass(WebInspector.TabBarItem.CloseButtonStyleClassName);
</span><del>-        if (closeButtonElement || clickedMiddleButton)
</del><ins>+        if (closeButtonElement || clickedMiddleButton) {
+            // Disallow closing the default tab if it is the only tab.
+            if (tabBarItem.isDefaultTab &amp;&amp; this._element.classList.contains(&quot;single-tab&quot;))
+                return;
+
</ins><span class="cx">             this.removeTabBarItem(tabBarItem, false, true);
</span><ins>+        }
</ins><span class="cx">     }
</span><span class="cx"> 
</span><span class="cx">     _handleMouseMoved(event)
</span><span class="lines">@@ -755,5 +780,6 @@
</span><span class="cx">     TabBarItemAdded: &quot;tab-bar-tab-bar-item-added&quot;,
</span><span class="cx">     TabBarItemRemoved: &quot;tab-bar-tab-bar-item-removed&quot;,
</span><span class="cx">     TabBarItemsReordered: &quot;tab-bar-tab-bar-items-reordered&quot;,
</span><del>-    NewTabItemClicked: &quot;tab-bar-new-tab-item-clicked&quot;
</del><ins>+    NewTabItemClicked: &quot;tab-bar-new-tab-item-clicked&quot;,
+    OpenDefaultTab: &quot;tab-bar-open-default-tab&quot;
</ins><span class="cx"> };
</span></span></pre></div>
<a id="branchessafari601branchSourceWebInspectorUIUserInterfaceViewsTabBarItemjs"></a>
<div class="modfile"><h4>Modified: branches/safari-601-branch/Source/WebInspectorUI/UserInterface/Views/TabBarItem.js (193212 => 193213)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-601-branch/Source/WebInspectorUI/UserInterface/Views/TabBarItem.js        2015-12-03 18:58:08 UTC (rev 193212)
+++ branches/safari-601-branch/Source/WebInspectorUI/UserInterface/Views/TabBarItem.js        2015-12-03 18:58:15 UTC (rev 193213)
</span><span class="lines">@@ -119,14 +119,14 @@
</span><span class="cx">         this._element.classList.toggle(&quot;disabled&quot;, disabled);
</span><span class="cx">     }
</span><span class="cx"> 
</span><del>-    get hideCloseButton()
</del><ins>+    get isDefaultTab()
</ins><span class="cx">     {
</span><del>-        return this._element.classList.contains(&quot;hide-close-button&quot;);
</del><ins>+        return this._element.classList.contains(&quot;default-tab&quot;);
</ins><span class="cx">     }
</span><span class="cx"> 
</span><del>-    set hideCloseButton(hide)
</del><ins>+    set isDefaultTab(isDefaultTab)
</ins><span class="cx">     {
</span><del>-        this._element.classList.toggle(&quot;hide-close-button&quot;, hide);
</del><ins>+        this._element.classList.toggle(&quot;default-tab&quot;, isDefaultTab);
</ins><span class="cx">     }
</span><span class="cx"> 
</span><span class="cx">     get pinned()
</span></span></pre>
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