third_party/WebKit/Source/devtools/front_end/ui/RootView.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.
/**
 * @unrestricted
 */
UI.RootView = class extends UI.VBox {
  constructor() {
    super();
    this.markAsRoot();
    this.element.classList.add('root-view');
    this.registerRequiredCSS('ui/rootView.css');
    this.element.setAttribute('spellcheck', false);
  }

  /**
   * @param {!Document} document
   */
  attachToDocument(document) {
    document.defaultView.addEventListener('resize', this.doResize.bind(this), false);
    this._window = document.defaultView;
    this.doResize();
    this.show(/** @type {!Element} */ (document.body));
  }

  /**
   * @override
   */
  doResize() {
    if (this._window) {
      var size = this.constraints().minimum;
      var zoom = UI.zoomManager.zoomFactor();
      var right = Math.min(0, this._window.innerWidth - size.width / zoom);
      this.element.style.marginRight = right + 'px';
      var bottom = Math.min(0, this._window.innerHeight - size.height / zoom);
      this.element.style.marginBottom = bottom + 'px';
    }
    super.doResize();
  }
};