winsize.mozcmd

/*
 *  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/.
 *
 *  Contributor(s):
 *  - LouCypher (original code)
 */

[
  {
    name: "winsize",
    description: "Resize browser window. If no parameters entered, display current window size.",
    params: [
      {
        name: "width",
        type: "number",
        defaultValue: null,
        description: "Browser width"
      },
      {
        name: "height",
        type: "number",
        defaultValue: null,
        description: "Browser height"
      },
      {
        name: "center",
        type: "boolean",
        description: "Center window on screen"
      }
    ],
    returnType: "string",
    exec: function(args, context) {
      let environment = context.environment;
      let chromeWin = environment.chromeWindow || environment.chromeDocument.defaultView;
      let chromeDoc = environment.chromeDocument;
      let browserWin = chromeDoc.documentElement;
      let screen = chromeWin.screen;

      function centerScreen() {
        chromeWin.moveTo((screen.availWidth  - browserWin.width)  / 2,
                         (screen.availHeight - browserWin.height) / 2);
      }

      let width = args.width, height = args.height, center = args.center;
      if (width && height) {
        chromeWin.resizeTo(width, height);
        if (center)
          centerScreen();
        return "Resized to " + width + "x" + height;
      }

      if (center)
        centerScreen();

      switch (chromeWin.windowState) {
        case 3: // normal
          return browserWin.width + "x" + browserWin.height;
        case 1: // maximized
          return browserWin.clientWidth + "x" + browserWin.clientHeight;
      }
    }
  }
]