lens/src/renderer/remote-helpers/history-updater.ts

/**
 * Copyright (c) 2021 OpenLens Authors
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

import { webContents } from "@electron/remote";
import { reaction } from "mobx";
import { broadcastMessage } from "../../common/ipc";
import { navigation } from "../navigation";

export function watchHistoryState() {
  return reaction(() => navigation.location, () => {
    const getAllWebContents = webContents.getAllWebContents();

    const canGoBack = getAllWebContents.some((webContent) => {
      if (webContent.getType() === "window") {
        return webContent.canGoBack();
      }

      return false;
    });

    const canGoForward = getAllWebContents.some((webContent) => {
      if (webContent.getType() === "window") {
        return webContent.canGoForward();
      }

      return false;
    });

    broadcastMessage("history:can-go-back", canGoBack);
    broadcastMessage("history:can-go-forward", canGoForward);
  });
}