Application, the main screen is divided into two containers:left and right container,
The right side of the container is divided into two containers:top and bottom container,
There is a button in the left container.
Click the button, the container at lower right will using ModuleManager load Module, The following container load of the right of the screen has been monitoring the container above the action.
When you click the button repeatedly to load the container in the lower right, it will create multiple instances, and can not be freed immediately. When the above container do an action or event, there are multiple instances of monitoring exist.
The background will be repeat the action or event many times.
How to avoid the event has been repeated many times in the background?
Set a flag so you know to ignore other actions.
You could disable the event listener as soon as the first event is registered, so that furthur events are not considered. When closing the module you can enable the event back again.