palemoon-dev/platform/devtools/client/responsive.html/reducers/screenshot.js

/* 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/. */

"use strict";

const {
  TAKE_SCREENSHOT_END,
  TAKE_SCREENSHOT_START,
} = require("../actions/index");

const INITIAL_SCREENSHOT = { isCapturing: false };

let reducers = {

  [TAKE_SCREENSHOT_END](screenshot, action) {
    return Object.assign({}, screenshot, { isCapturing: false });
  },

  [TAKE_SCREENSHOT_START](screenshot, action) {
    return Object.assign({}, screenshot, { isCapturing: true });
  },
};

module.exports = function (screenshot = INITIAL_SCREENSHOT, action) {
  let reducer = reducers[action.type];
  if (!reducer) {
    return screenshot;
  }
  return reducer(screenshot, action);
};