src/cobalt/debug/remote/devtools/front_end/network/RequestHTMLView.js

/*
 * Copyright (C) 2011 Google 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:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * 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.
 *     * Neither the name of Google Inc. 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
 * OWNER OR 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.
 */

/**
 * @unrestricted
 */
Network.RequestHTMLView = class extends UI.VBox {
  /**
   * @param {string} dataURL
   */
  constructor(dataURL) {
    super(true);
    this.registerRequiredCSS('network/requestHTMLView.css');
    this._dataURL = dataURL;
    this.contentElement.classList.add('html', 'request-view');
  }

  /**
   * @override
   */
  wasShown() {
    this._createIFrame();
  }

  /**
   * @override
   */
  willHide() {
    this.contentElement.removeChildren();
  }

  _createIFrame() {
    // We need to create iframe again each time because contentDocument
    // is deleted when iframe is removed from its parent.
    this.contentElement.removeChildren();
    const iframe = createElement('iframe');
    iframe.className = 'html-preview-frame';
    iframe.setAttribute('sandbox', '');  // Forbid to run JavaScript and set unique origin.
    iframe.setAttribute('src', this._dataURL);
    iframe.setAttribute('tabIndex', -1);
    this.contentElement.appendChild(iframe);
  }
};