FeatureRequest: iron-collapse "opened" event

[eximius313]

Description

Please provide possibility of listening to "opened" and "closed" events

Expected outcome

Event is called when animation is finished

[valdrinkoshi]

Hi @eximius313, you could leverage the iron-resize event that is fired as soon as the opening/closing is done http://jsbin.com/fosohi/1/edit?html,console,output

[eximius313]

The problem is that iron-resize is also called for example every time I click inside an input field (which is inside my iron-collapse) even though it's already opened

[valdrinkoshi]

Oh true, that happens because iron-collapse keeps listening at transitionend events, and paper-input animation triggers one of those...As a consequence it also fires an unnecessary iron-resize, which is a bug.

[eximius313]

@valdrinkoshi
Do you have any idea when your bugfix is merged?