text: /*
   * Copyright (C) 2007, 2008 Apple Inc.  All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1.  Redistributions of source code must retain the above copyright
   *     notice, this list of conditions and the following disclaimer.
   * 2.  Redistributions in binary form must reproduce the above copyright
   *     notice, this list of conditions and the following disclaimer in the
   *     documentation and/or other materials provided with the distribution.
   * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
   *     its contributors may be used to endorse or promote products derived
   *     from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
   * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
   * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  // For testing.
  UI.panels = [];
  
  /**
   * @unrestricted
   */
  UI.Panel = class extends UI.VBox {
    constructor(name) {
      super();
  
      this.element.classList.add('panel');
      this.element.setAttribute('aria-label', name);
      this.element.classList.add(name);
      this._panelName = name;
  
      // For testing.
      UI.panels[name] = this;
  
      this._shortcuts = /** !Object.<number, function(Event=):boolean> */ ({});
    }
  
    get name() {
      return this._panelName;
    }
  
    /**
     * @return {?UI.SearchableView}
     */
    searchableView() {
      return null;
    }
  
    /**
     * @override
     * @return {!Array.<!Element>}
     */
    elementsToRestoreScrollPositionsFor() {
      return [];
    }
  
    /**
     * @param {!KeyboardEvent} event
     */
    handleShortcut(event) {
      const shortcutKey = UI.KeyboardShortcut.makeKeyFromEvent(event);
      const handler = this._shortcuts[shortcutKey];
      if (handler && handler(event))
        event.handled = true;
    }
  
    /**
     * @param {!UI.Infobar} infobar
     */
    showInfobar(infobar) {
      infobar.setCloseCallback(this._onInfobarClosed.bind(this, infobar));
      if (this.element.firstChild)
        this.element.insertBefore(infobar.element, this.element.firstChild);
      else
        this.element.appendChild(infobar.element);
      infobar.setParentView(this);
      this.doResize();
    }
  
    /**
     * @param {!UI.Infobar} infobar
     */
    _onInfobarClosed(infobar) {
      infobar.element.remove();
      this.doResize();
    }
  };
  
  /**
   * @unrestricted
   */
  UI.PanelWithSidebar = class extends UI.Panel {
    /**
     * @param {string} name
     * @param {number=} defaultWidth
     */
    constructor(name, defaultWidth) {
      super(name);
  
      this._panelSplitWidget =
          new UI.SplitWidget(true, false, this._panelName + 'PanelSplitViewState', defaultWidth || 200);
      this._panelSplitWidget.show(this.element);
  
      this._mainWidget = new UI.VBox();
      this._panelSplitWidget.setMainWidget(this._mainWidget);
  
      this._sidebarWidget = new UI.VBox();
      this._sidebarWidget.setMinimumSize(100, 25);
      this._panelSplitWidget.setSidebarWidget(this._sidebarWidget);
  
      this._sidebarWidget.element.classList.add('panel-sidebar');
    }
  
    /**
     * @return {!Element}
     */
    panelSidebarElement() {
      return this._sidebarWidget.element;
    }
  
    /**
     * @return {!Element}
     */
    mainElement() {
      return this._mainWidget.element;
    }
  
    /**
     * @return {!UI.SplitWidget}
     */
    splitWidget() {
      return this._panelSplitWidget;
    }
  };
  