Setting StWidget::label-actor on some ui elements

Specifically:
  * Icons on Alt+Tab menu
  * Icons on Ctrl+Alt+Tab menu
  * Icons on the list of applications

js/ui/altTab.js

@@ -587,7 +587,7 @@ SwitcherList.prototype = {
         this._rightArrow.opacity = this._rightGradient.opacity;
     },
 
-    addItem : function(item) {
+    addItem : function(item, label) {
         let bbox = new St.Button({ style_class: 'item-box',
                                    reactive: true });
 
@@ -598,6 +598,8 @@ SwitcherList.prototype = {
         bbox.connect('clicked', Lang.bind(this, function() { this._onItemClicked(n); }));
         bbox.connect('enter-event', Lang.bind(this, function() { this._onItemEnter(n); }));
 
+        bbox.label_actor = label;
+
         this._items.push(bbox);
     },
 
@@ -983,7 +985,7 @@ AppSwitcher.prototype = {
 
     _addIcon : function(appIcon) {
         this.icons.push(appIcon);
-        this.addItem(appIcon.actor);
+        this.addItem(appIcon.actor, appIcon.label);
 
         let n = this._arrows.length;
         let arrow = new St.DrawingArea({ style_class: 'switcher-arrow' });
@@ -1053,9 +1055,12 @@ ThumbnailList.prototype = {
                 this._labels.push(bin);
                 bin.add_actor(name);
                 box.add_actor(bin);
+
+                this.addItem(box, name);
+            } else {
+                this.addItem(box, null);
             }
 
-            this.addItem(box);
         }
     },
 

js/ui/appDisplay.js

@@ -434,6 +434,8 @@ AppWellIcon.prototype = {
         this.icon = new AppIcon(app, iconParams);
         this.actor.set_child(this.icon.actor);
 
+        this.actor.label_actor = this.icon.label;
+
         this.actor.connect('button-press-event', Lang.bind(this, this._onButtonPress));
         this.actor.connect('clicked', Lang.bind(this, this._onClicked));
         this.actor.connect('popup-menu', Lang.bind(this, this._onKeyboardPopupMenu));

js/ui/ctrlAltTab.js

@@ -323,6 +323,6 @@ CtrlAltTabSwitcher.prototype = {
         let text = new St.Label({ text: item.name });
         box.add(text, { x_fill: false });
 
-        this.addItem(box);
+        this.addItem(box, text);
     }
 };

js/ui/iconGrid.js

@@ -42,10 +42,10 @@ BaseIcon.prototype = {
         box.add_actor(this._iconBin);
 
         if (params.showLabel) {
-            this._name = new St.Label({ text: label });
+            this.label = new St.Label({ text: label });
-            box.add_actor(this._name);
+            box.add_actor(this.label);
         } else {
-            this._name = null;
+            this.label = null;
         }
 
         if (params.createIcon)
@@ -67,8 +67,8 @@ BaseIcon.prototype = {
 
         let childBox = new Clutter.ActorBox();
 
-        if (this._name) {
+        if (this.label) {
-            let [labelMinHeight, labelNatHeight] = this._name.get_preferred_height(-1);
+            let [labelMinHeight, labelNatHeight] = this.label.get_preferred_height(-1);
             preferredHeight += this._spacing + labelNatHeight;
 
             let labelHeight = availHeight >= preferredHeight ? labelNatHeight
@@ -79,7 +79,7 @@ BaseIcon.prototype = {
             childBox.x2 = availWidth;
             childBox.y1 = iconSize + this._spacing;
             childBox.y2 = childBox.y1 + labelHeight;
-            this._name.allocate(childBox, flags);
+            this.label.allocate(childBox, flags);
         }
 
         childBox.x1 = Math.floor((availWidth - iconNatWidth) / 2);
@@ -98,8 +98,8 @@ BaseIcon.prototype = {
         alloc.min_size = iconMinHeight;
         alloc.natural_size = iconNatHeight;
 
-        if (this._name) {
+        if (this.label) {
-            let [labelMinHeight, labelNatHeight] = this._name.get_preferred_height(forWidth);
+            let [labelMinHeight, labelNatHeight] = this.label.get_preferred_height(forWidth);
             alloc.min_size += this._spacing + labelMinHeight;
             alloc.natural_size += this._spacing + labelNatHeight;
         }

js/ui/searchDisplay.js

@@ -39,6 +39,7 @@ SearchResult.prototype = {
             let icon = new IconGrid.BaseIcon(this.metaInfo['name'],
                                              { createIcon: this.metaInfo['createIcon'] });
             content.set_child(icon.actor);
+            this.actor.label_actor = icon.label;
         }
         this._content = content;
         this.actor.set_child(content);
@@ -259,6 +260,7 @@ SearchResults.prototype = {
         let title = new St.Label({ text: provider.name,
                                    style_class: 'dash-search-button-label' });
 
+        button.label_actor = title;
         bin.set_child(title);
         button.set_child(bin);
         provider.actor = button;