chrome-devtools-frontend/front_end/panels/network/RequestHTMLView.ts

Chrome DevTools UI

/*
 * 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.
 */

import type * as TextUtils from '../../models/text_utils/text_utils.js';
import * as UI from '../../ui/legacy/legacy.js';
import {html, nothing, render} from '../../ui/lit/lit.js';

import requestHTMLViewStyles from './requestHTMLView.css.js';

interface ViewInput {
  dataURL: string|null;
}

type View = (input: ViewInput, output: object, target: HTMLElement) => void;

export const DEFAULT_VIEW: View = (input, _output, target) => {
  // Forbid to run JavaScript and set unique origin.
  // clang-format off
  render(html`
    <style>${requestHTMLViewStyles}</style>
    <div class="html request-view widget vbox">
      ${input.dataURL ? html`
        <!-- @ts-ignore -->
        <iframe class="html-preview-frame" sandbox
          csp="default-src 'none';img-src data:;style-src 'unsafe-inline'" src=${input.dataURL}
          tabindex="-1" role="presentation"></iframe>` : nothing}
    </div>`,
    target, {host: input});
  // clang-format on
};

export class RequestHTMLView extends UI.Widget.VBox {
  readonly #dataURL: string;
  readonly #view: View;
  private constructor(dataURL: string, view = DEFAULT_VIEW) {
    super(true);

    this.#dataURL = dataURL;
    this.#view = view;
  }

  static create(contentData: TextUtils.ContentData.ContentData): RequestHTMLView|null {
    const dataURL = contentData.asDataUrl();
    return dataURL ? new RequestHTMLView(dataURL) : null;
  }

  override wasShown(): void {
    super.wasShown();
    this.requestUpdate();
  }

  override willHide(): void {
    this.requestUpdate();
  }

  override performUpdate(): void {
    this.#view({dataURL: this.#dataURL}, {}, this.contentElement);
  }
}