DevTools: Use TargetsToolbar instead of ThreadToolbar

Source/devtools/front_end/sources/TargetsToolbar.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
+ * @implements {WebInspector.TargetManager.Observer}
+ */
+WebInspector.TargetsToolbar = function()
+{
+    this.element = document.createElement("div");
+    this.element.className = "status-bar scripts-debug-toolbar targets-toolbar hidden";
+    this._comboBox = new WebInspector.StatusBarComboBox(this._onComboBoxSelectionChange.bind(this));
+    this.element.appendChild(this._comboBox.element);
+
+    /** @type {!Map.<!WebInspector.Target, !Element>} */
+    this._targetToOption = new Map();
+    if (!WebInspector.experimentsSettings.workersInMainWindow.isEnabled())
+        return;
+
+    WebInspector.context.addFlavorChangeListener(WebInspector.Target, this._targetChangedExternally, this);
+    WebInspector.targetManager.observeTargets(this);
+}
+
+WebInspector.TargetsToolbar.prototype = {
+
+    /**
+     * @param {!WebInspector.Target} target
+     */
+    targetAdded: function(target)
+    {
+        var option = this._comboBox.createOption(target.name());
+        option.__target = target;
+        this._targetToOption.put(target, option);
+        if (WebInspector.context.flavor(WebInspector.Target) === target)
+            this._comboBox.select(option);
+
+        this._updateVisibility();
+    },
+
+    /**
+     * @param {!WebInspector.Target} target
+     */
+    targetRemoved: function(target)
+    {
+        var option = this._targetToOption.remove(target);
+        this._comboBox.removeOption(option);
+        this._updateVisibility();
+    },
+
+    _onComboBoxSelectionChange: function()
+    {
+        var selectedOption = this._comboBox.selectedOption();
+        if (!selectedOption)
+            return;
+
+        WebInspector.context.setFlavor(WebInspector.Target, selectedOption.__target);
+    },
+
+    _updateVisibility: function()
+    {
+        var hidden = this._comboBox.size() === 1;
+        this.element.classList.toggle("hidden", hidden);
+    },
+
+    /**
+     * @param {!WebInspector.Event} event
+     */
+    _targetChangedExternally: function(event)
+    {
+        var target = /** @type {?WebInspector.Target} */ (event.data);
+        if (target) {
+            var option = /** @type {!Element} */ (this._targetToOption.get(target));
+            this._comboBox.select(option);
+        }
+    }
+
+}