DevTools: prepare to unify Network and CPU throttling UI

third_party/WebKit/Source/devtools/front_end/network_conditions/NetworkConditionsSelector.js

-// Copyright 2015 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.
-/**
- * @unrestricted
- */
-NetworkConditions.NetworkConditionsSelector = class {
-  /**
-   * @param {function(!Array<!NetworkConditions.NetworkConditionsGroup>):!Array<?SDK.NetworkManager.Conditions>} populateCallback
-   * @param {function(number)} selectCallback
-   */
-  constructor(populateCallback, selectCallback) {
-    this._populateCallback = populateCallback;
-    this._selectCallback = selectCallback;
-    this._customSetting = Common.moduleSetting('customNetworkConditions');
-    this._customSetting.addChangeListener(this._populateOptions, this);
-    this._manager = SDK.multitargetNetworkManager;
-    this._manager.addEventListener(
-        SDK.MultitargetNetworkManager.Events.ConditionsChanged, this._conditionsChanged, this);
-    this._populateOptions();
-  }
-
-  /**
-   * @param {number} throughput
-   * @param {boolean=} plainText
-   * @return {string}
-   */
-  static throughputText(throughput, plainText) {
-    if (throughput < 0)
-      return '';
-    var throughputInKbps = throughput / (1024 / 8);
-    var delimiter = plainText ? '' : ' ';
-    if (throughputInKbps < 1024)
-      return Common.UIString('%d%skb/s', throughputInKbps, delimiter);
-    if (throughputInKbps < 1024 * 10)
-      return Common.UIString('%.1f%sMb/s', throughputInKbps / 1024, delimiter);
-    return Common.UIString('%d%sMb/s', (throughputInKbps / 1024) | 0, delimiter);
-  }
-
-  /**
-   * @param {!HTMLSelectElement} selectElement
-   */
-  static decorateSelect(selectElement) {
-    var options = [];
-    var selector = new NetworkConditions.NetworkConditionsSelector(populate, select);
-    selectElement.addEventListener('change', optionSelected, false);
-
-    /**
-     * @param {!Array.<!NetworkConditions.NetworkConditionsGroup>} groups
-     * @return {!Array<?SDK.NetworkManager.Conditions>}
-     */
-    function populate(groups) {
-      selectElement.removeChildren();
-      options = [];
-      for (var i = 0; i < groups.length; ++i) {
-        var group = groups[i];
-        var groupElement = selectElement.createChild('optgroup');
-        groupElement.label = group.title;
-        for (var conditions of group.items) {
-          var title = Common.UIString(conditions.title);
-          var option = new Option(title, title);
-          groupElement.appendChild(option);
-          options.push(conditions);
-        }
-        if (i === groups.length - 1) {
-          groupElement.appendChild(new Option(Common.UIString('Add\u2026'), Common.UIString('Add\u2026')));
-          options.push(null);
-        }
-      }
-      return options;
-    }
-
-    function optionSelected() {
-      if (selectElement.selectedIndex === selectElement.options.length - 1)
-        selector.revealAndUpdate();
-      else
-        selector.optionSelected(options[selectElement.selectedIndex]);
-    }
-
-    /**
-     * @param {number} index
-     */
-    function select(index) {
-      if (selectElement.selectedIndex !== index)
-        selectElement.selectedIndex = index;
-    }
-  }
-
-  /**
-   * @return {!UI.ToolbarMenuButton}
-   */
-  static createToolbarMenuButton() {
-    var button = new UI.ToolbarMenuButton(appendItems);
-    button.setGlyph('');
-    button.turnIntoSelect();
-
-    /** @type {!Array<?SDK.NetworkManager.Conditions>} */
-    var options = [];
-    var selectedIndex = -1;
-    var selector = new NetworkConditions.NetworkConditionsSelector(populate, select);
-    return button;
-
-    /**
-     * @param {!UI.ContextMenu} contextMenu
-     */
-    function appendItems(contextMenu) {
-      for (var index = 0; index < options.length; ++index) {
-        var conditions = options[index];
-        if (!conditions) {
-          contextMenu.appendSeparator();
-        } else {
-          contextMenu.appendCheckboxItem(
-              Common.UIString(conditions.title), selector.optionSelected.bind(selector, conditions),
-              selectedIndex === index);
-        }
-      }
-      contextMenu.appendItem(Common.UIString('Edit\u2026'), selector.revealAndUpdate.bind(selector));
-    }
-
-    /**
-     * @param {!Array.<!NetworkConditions.NetworkConditionsGroup>} groups
-     * @return {!Array<?SDK.NetworkManager.Conditions>}
-     */
-    function populate(groups) {
-      options = [];
-      for (var group of groups) {
-        for (var conditions of group.items)
-          options.push(conditions);
-        options.push(null);
-      }
-      return options;
-    }
-
-    /**
-     * @param {number} index
-     */
-    function select(index) {
-      selectedIndex = index;
-      button.setText(options[index].title);
-    }
-  }
-
-  /**
-   * @return {!UI.ToolbarCheckbox}
-   */
-  static createOfflineToolbarCheckbox() {
-    var checkbox = new UI.ToolbarCheckbox(
-        Common.UIString('Offline'), Common.UIString('Force disconnected from network'), forceOffline);
-    SDK.multitargetNetworkManager.addEventListener(
-        SDK.MultitargetNetworkManager.Events.ConditionsChanged, networkConditionsChanged);
-    checkbox.setChecked(SDK.multitargetNetworkManager.networkConditions() === SDK.NetworkManager.OfflineConditions);
-
-    function forceOffline() {
-      if (checkbox.checked()) {
-        NetworkConditions.NetworkConditionsSelector._lastNetworkConditions =
-            SDK.multitargetNetworkManager.networkConditions();
-        SDK.multitargetNetworkManager.setNetworkConditions(SDK.NetworkManager.OfflineConditions);
-      } else {
-        SDK.multitargetNetworkManager.setNetworkConditions(
-            NetworkConditions.NetworkConditionsSelector._lastNetworkConditions);
-      }
-    }
-
-    function networkConditionsChanged() {
-      var conditions = SDK.multitargetNetworkManager.networkConditions();
-      checkbox.setChecked(conditions === SDK.NetworkManager.OfflineConditions);
-    }
-    return checkbox;
-  }
-
-  _populateOptions() {
-    var customGroup = {title: Common.UIString('Custom'), items: this._customSetting.get()};
-    var presetsGroup = {title: Common.UIString('Presets'), items: NetworkConditions.NetworkConditionsSelector.presets};
-    var disabledGroup = {title: Common.UIString('Disabled'), items: [SDK.NetworkManager.NoThrottlingConditions]};
-    this._options = this._populateCallback([disabledGroup, presetsGroup, customGroup]);
-    if (!this._conditionsChanged()) {
-      for (var i = this._options.length - 1; i >= 0; i--) {
-        if (this._options[i]) {
-          this.optionSelected(/** @type {!SDK.NetworkManager.Conditions} */ (this._options[i]));
-          break;
-        }
-      }
-    }
-  }
-
-  revealAndUpdate() {
-    Common.Revealer.reveal(this._customSetting);
-    this._conditionsChanged();
-  }
-
-  /**
-   * @param {!SDK.NetworkManager.Conditions} conditions
-   */
-  optionSelected(conditions) {
-    this._manager.setNetworkConditions(conditions);
-  }
-
-  /**
-   * @return {boolean}
-   */
-  _conditionsChanged() {
-    var value = this._manager.networkConditions();
-    for (var index = 0; index < this._options.length; ++index) {
-      var option = this._options[index];
-      if (option && option.download === value.download && option.upload === value.upload &&
-          option.latency === value.latency && option.title === value.title) {
-        this._selectCallback(index);
-        return true;
-      }
-    }
-    return false;
-  }
-};
-
-/** @typedef {!{title: string, items: !Array<!SDK.NetworkManager.Conditions>}} */
-NetworkConditions.NetworkConditionsGroup;
-
-
-/** @type {!Array.<!SDK.NetworkManager.Conditions>} */
-NetworkConditions.NetworkConditionsSelector.presets = [
-  SDK.NetworkManager.OfflineConditions,
-  {title: 'Slow 3G', download: 500 * 1024 / 8 * .8, upload: 500 * 1024 / 8 * .8, latency: 400 * 5},
-  {title: 'Fast 3G', download: 1.6 * 1024 * 1024 / 8 * .9, upload: 750 * 1024 / 8 * .9, latency: 150 * 3.75}
-];
-
-/**
- * @implements {UI.ActionDelegate}
- * @unrestricted
- */
-NetworkConditions.NetworkConditionsActionDelegate = class {
-  /**
-   * @override
-   * @param {!UI.Context} context
-   * @param {string} actionId
-   * @return {boolean}
-   */
-  handleAction(context, actionId) {
-    if (actionId === 'network-conditions.network-online') {
-      SDK.multitargetNetworkManager.setNetworkConditions(SDK.NetworkManager.NoThrottlingConditions);
-      return true;
-    }
-    if (actionId === 'network-conditions.network-offline') {
-      SDK.multitargetNetworkManager.setNetworkConditions(SDK.NetworkManager.OfflineConditions);
-      return true;
-    }
-    return false;
-  }
-};