Make player hold mine continually even when inventory is open of game window has lost focus. 1.8.9

In part of the mod I am making I am trying to have the player mine(effectively hold down left click). I want the player to continue to mine even if the inventory is open or the game window is not focused.

I have tried KeyBinding.setKeyBindState(attack, true); and using a onTick method.

I also have tried other keys such as WASD and they all work when the inventory is open or the game window is not focused.

note attack is set like this.attack = gameSettings.keyBindAttack.getKeyCode(); and works when the game is focused.

    private void attack(){
        if (Config.doBreaking) {
            doAttack = true;

//            KeyBinding.setKeyBindState(attack, true);
        }
    }

    private void stopAttacking(){
        if (Config.doBreaking) {
//            KeyBinding.setKeyBindState(attack, false);
            doAttack = false;
        }
    }

    @SubscribeEvent
    public void onTick(TickEvent.RenderTickEvent event) {
        if (doAttack){
            KeyBinding.onTick(Minecraft.getMinecraft().gameSettings.keyBindAttack.getKeyCode());
        }
    }