(feat) disable event propagation

[WilixLead]

Need way for optional prevent event broadcasting. Something like:

iohook.on('keyup', (event) => {
  event.preventDefault();
});

Or equal method

[sam-lex]

Is this possible? I've been looking for modules that has this, but found none so far.

I want to make an app to control another computer's keyboard/mouse, just like Synergy. Simulating keys/mouse on the "client" computer is not a problem, only problem is that the host key/mouse should be prevented.

[WilixLead]

Need to review this feature in https://github.com/kwhat/libuiohook repository. iohook use this lib for hooking. I will be very happy if somebody make pull-request with this feature. At this moment I have no time for research and implement it. Sorry...

[rotemgrim]

hey @WilixLead any progress with this issue?

[eboukamza]

Hi there!

I have worked to an implementation of this feature because I need it for enable/disable the propagation of mouse click events in my project.

@WilixLead it is not possible to implement this feature inside the callback because the event is already propagated at this moment but I have extended the API with two new methods.

 /**
 * Disable mouse click propagation.
 * The click event are captured and the event emitted but not propagated to the window.
 */
disableClickPropagation() {
   NodeHookAddon.grabMouseClick(true);
}

 /**
  * Enable mouse click propagation (option by default).
 * The click event are emitted and propagated.
 */
enableClickPropagation() {
  NodeHookAddon.grabMouseClick(false);
}`

Propagation is enabled by default.

It's work fine in windows and linux (it is hard to do it in x11 but is done :). I have no tested in Mac OS but I am really confident about the solution.

I am open to discuss for extend this feature to other events like key events.

I hope this helps!

[Djiit]

Hey @eboukamza ! That's great ! It would be awesome to be able to use this feature to key events. I'll update your PR soon. Thanks !

[wurikiji]

@eboukamza It's amazing! Is there someone implementing the same feature for keyboard propagation?

[wurikiji]

I updated codes to be able to enable/disable keyboard events. Please, refer to #102. Only tested on MacOS.

[cactysman]

Any news on this?

[chaselambda]

I got something like this working. It's not enough to put into master (only works on Windows) but parallels how disableClickPropogation works:

https://github.com/theicfire/iohook/commit/f2e1e14c079e175cc97f314dfcf2203cc1467508

[Llorx]

@theicfire Great work, but when disabling keyboard keypress event won't work, and is just the one needed to extract the real character typed.