[1.10.2] LeftClickBlock in adventure mode & Cancel swing animation

[OhMyOhmit]

Hello everyone!
I've got two questions.

First question is about getting event when player left clicks on block in adventure mode. I am using this code to attack mobs through grass. Everything works fine, except when I am in adventure mode - code in PlayerInteractEvent.LeftClickBlock never runs in gamemode 2. Is there any other possible ways to make the code run even by another satisfying way?
The second question is about arm swing animation. I am using this code

@SubscribeEvent
	    public void onAttackEntity(AttackEntityEvent event)

	    {
	                event.setCanceled(true);
	    }

 to prevent entity from being damaged and it works fine, but I also need to cancel arm's animation in it. Any chances? This looks weird and I really need to get rid of it.

    Thanks.

Edited February 2, 2018 by OhMyOhmit