Unable to bind to 'element.mousedown' event when clicking elements. Unable to listen for CMD/CTRL key.

[vesper8]

I'm wondering if you can provide advice here.

I am trying to listen to CTRL-click / CMD-click when you click on an element, such as a task.

I tried

  modeler.on('element.click', (event) => {
    const element = event.element;

    if (event.originalEvent.metaKey || event.originalEvent.ctrlKey) {
      // do something
    } else {
      // do something else
    }
  });

But it appears that for whatever reason, when you CMD/CTRL click on an element, it does not trigger the 'element.click' event at all.

I tried disabling the keyboard bindings but that did not help.

I also tried with

  modeler.on('element.mousedown', (event) => {
    console.log('element.mousedown.event', event);
    console.log('element.mousedown.event.originalEvent', event.originalEvent);

    const element = event.element;

    if (event.originalEvent.metaKey || event.originalEvent.ctrlKey) {
      console.log('element.cmd-mousedown.element', element);
      console.log('element.cmd-mousedown.element.incoming', element.incoming);
      console.log('element.cmd-mousedown.element.outgoing', element.outgoing);
    }
  });

But it's a similar issue, when I click on an element, such as a task, it does not trigger the 'element.mousedown'
event at all, with or without modifier keys pressed down

I was able to achieve a workaround by listening for the ALT key instead:

  modeler.on('element.click', (event) => {
    const element = event.element;

    if (event.originalEvent.altKey) {
      // do something
    } else {
      // do something else
    }
  });

The above works.. but I was really hoping to use the CMD/CTRL key instead of the ALT key.

Do you know why the above is not working with the CMD/CTRL key? I believe this should work..

Many thanks!!

[miyuesc]

I also tried it and found that it does work as you said.
But the problem is that bpmn.js doesn't support such use, and it's hard for me to make changes here.