codesforejss/function toggleFullScreen() at master · lookang/codesforejss · GitHub

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// add toggleFullScreen() to onDoubleclick of plottingPanel

/*jslint browser:true */
// copy to custom function
function toggleFullScreen() {
  try {
    const doc = document.documentElement;

    // Check if any fullscreen element exists
    const isFullScreen = document.fullscreenElement ||
                         document.mozFullScreenElement ||
                         document.webkitFullscreenElement ||
                         document.msFullscreenElement;

    if (!isFullScreen) {
      // Request full-screen mode based on the browser
      if (doc.requestFullscreen) {
        doc.requestFullscreen();
      } else if (doc.msRequestFullscreen) {
        doc.msRequestFullscreen();
      } else if (doc.mozRequestFullScreen) {
        doc.mozRequestFullScreen();
      } else if (doc.webkitRequestFullscreen) {
        doc.webkitRequestFullscreen(Element.ALLOW_KEYBOARD_INPUT); // Pass input permission for older WebKit
      }
    } else {
      // Exit full-screen mode based on the browser
      if (document.exitFullscreen) {
        document.exitFullscreen();
      } else if (document.msExitFullscreen) {
        document.msExitFullscreen();
      } else if (document.mozCancelFullScreen) {
        document.mozCancelFullScreen();
      } else if (document.webkitExitFullscreen) {
        document.webkitExitFullscreen();
      }
    }
  } catch (e) {
    console.error("Error toggling full-screen mode:", e);
  }
}

// Handle screen orientation for mobile devices (optional)
window.addEventListener("orientationchange", () => {
  if (screen.orientation && screen.orientation.lock) {
    screen.orientation.lock('landscape').catch(err => console.warn('Failed to lock orientation:', err));
  }
});


older versions

//updated to address Firefox
//https://developer.mozilla.org/en-US/docs/Web/Guide/API/DOM/Using_full_screen_mode
// does not work for iOS
/*jslint browser:true */
function toggleFullScreen() {
  try {
    if (!document.fullscreenElement &&    // alternative standard method
      !document.mozFullScreenElement && !document.webkitFullscreenElement && !document.msFullscreenElement) {  // current working methods
      if (document.documentElement.requestFullscreen) {
        document.documentElement.requestFullscreen();
      } else if (document.documentElement.msRequestFullscreen) {
        document.documentElement.msRequestFullscreen();
      } else if (document.documentElement.mozRequestFullScreen) {
        document.documentElement.mozRequestFullScreen();
      } else if (document.documentElement.webkitRequestFullscreen) {
        document.documentElement.webkitRequestFullscreen();
      }
    } else {
      if (document.exitFullscreen) { //Standard
        document.exitFullscreen();
      } else if (document.msExitFullscreen) { //Internet Explorer 11
        document.msExitFullscreen();
      } else if (document.mozCancelFullScreen) { //Gecko (Firefox)
        document.mozCancelFullScreen();
      } else if (document.webkitExitFullscreen) { //Safari (WebKit)
        document.webkitExitFullscreen();
      }
    }
  } catch (e) {
    //
  }
}


//https://developer.mozilla.org/en-US/docs/Web/Guide/API/DOM/Using_full_screen_mode
// does not work for iOS
/*jslint browser:true */
function toggleFullScreen() {
  if (!document.fullscreenElement &&    // alternative standard method
      !document.mozFullScreenElement && !document.webkitFullscreenElement && !document.msFullscreenElement ) {  // current working methods
    if (document.documentElement.requestFullscreen) {
      document.documentElement.requestFullscreen();
    } else if (document.documentElement.msRequestFullscreen) {
      document.documentElement.msRequestFullscreen();
    } else if (document.documentElement.mozRequestFullScreen) {
      document.documentElement.mozRequestFullScreen();
    } else if (document.documentElement.webkitRequestFullscreen) {
      document.documentElement.webkitRequestFullscreen();
    }
  } else {
    if (document.exitFullscreen) {
      document.exitFullscreen();
    } else if (document.msExitFullscreen) {
      document.msExitFullscreen();
    } else if (document.mozCancelFullScreen) {
      document.mozCancelFullScreen();
    } else if (document.webkitExitFullscreen) {
      document.webkitExitFullscreen();
    }
  }
}