Demo/bin/Debug/front_end/profiler/TargetsComboBoxController.js

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// 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}
 * @param {!Element} selectElement
 * @param {!Element} elementToHide
 */
WebInspector.TargetsComboBoxController = function(selectElement, elementToHide)
{
    elementToHide.classList.add("hidden");
    selectElement.addEventListener("change", this._onComboBoxSelectionChange.bind(this), false);
    this._selectElement = selectElement;
    this._elementToHide = elementToHide;
    /** @type {!Map.<!WebInspector.Target, !Element>} */
    this._targetToOption = new Map();

    WebInspector.context.addFlavorChangeListener(WebInspector.Target, this._targetChangedExternally, this);
    WebInspector.targetManager.observeTargets(this);
}

WebInspector.TargetsComboBoxController.prototype = {

    /**
     * @override
     * @param {!WebInspector.Target} target
     */
    targetAdded: function(target)
    {
        if (!target.hasJSContext())
            return;
        var option = this._selectElement.createChild("option");
        option.text = target.name();
        option.__target = target;
        this._targetToOption.set(target, option);
        if (WebInspector.context.flavor(WebInspector.Target) === target)
            this._selectElement.selectedIndex = Array.prototype.indexOf.call(/** @type {?} */ (this._selectElement), option);

        this._updateVisibility();
    },

    /**
     * @override
     * @param {!WebInspector.Target} target
     */
    targetRemoved: function(target)
    {
        if (!target.hasJSContext())
            return;
        var option = this._targetToOption.remove(target);
        this._selectElement.removeChild(option);
        this._updateVisibility();
    },

    _onComboBoxSelectionChange: function()
    {
        var selectedOption = this._selectElement[this._selectElement.selectedIndex];
        if (!selectedOption)
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