import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

devtools/client/responsive.html/actions/screenshot.js

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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* eslint-env browser */
+
+"use strict";
+
+const {
+  TAKE_SCREENSHOT_START,
+  TAKE_SCREENSHOT_END,
+} = require("./index");
+
+const { getFormatStr } = require("../utils/l10n");
+const { getToplevelWindow } = require("sdk/window/utils");
+const { Task: { spawn } } = require("devtools/shared/task");
+const e10s = require("../utils/e10s");
+
+const CAMERA_AUDIO_URL = "resource://devtools/client/themes/audio/shutter.wav";
+
+const animationFrame = () => new Promise(resolve => {
+  window.requestAnimationFrame(resolve);
+});
+
+function getFileName() {
+  let date = new Date();
+  let month = ("0" + (date.getMonth() + 1)).substr(-2);
+  let day = ("0" + date.getDate()).substr(-2);
+  let dateString = [date.getFullYear(), month, day].join("-");
+  let timeString = date.toTimeString().replace(/:/g, ".").split(" ")[0];
+
+  return getFormatStr("responsive.screenshotGeneratedFilename", dateString,
+                      timeString);
+}
+
+function createScreenshotFor(node) {
+  let mm = node.frameLoader.messageManager;
+
+  return e10s.request(mm, "RequestScreenshot");
+}
+
+function saveToFile(data, filename) {
+  return spawn(function* () {
+    const chromeWindow = getToplevelWindow(window);
+    const chromeDocument = chromeWindow.document;
+
+    // append .png extension to filename if it doesn't exist
+    filename = filename.replace(/\.png$|$/i, ".png");
+
+    chromeWindow.saveURL(data, filename, null,
+                         true, true,
+                         chromeDocument.documentURIObject, chromeDocument);
+  });
+}
+
+function simulateCameraEffects(node) {
+  let cameraAudio = new window.Audio(CAMERA_AUDIO_URL);
+  cameraAudio.play();
+  node.animate({ opacity: [ 0, 1 ] }, 500);
+}
+
+module.exports = {
+
+  takeScreenshot() {
+    return function* (dispatch, getState) {
+      yield dispatch({ type: TAKE_SCREENSHOT_START });
+
+      // Waiting the next repaint, to ensure the react components
+      // can be properly render after the action dispatched above
+      yield animationFrame();
+
+      let iframe = document.querySelector("iframe");
+      let data = yield createScreenshotFor(iframe);
+
+      simulateCameraEffects(iframe);
+
+      yield saveToFile(data, getFileName());
+
+      dispatch({ type: TAKE_SCREENSHOT_END });
+    };
+  }
+};