View Lifecycle Attached Properties

[kazo0]

We should have attached properties that allow you to hook to a specific control's lifecycle events.

This issue will serve as a means of defining a spec for this.

Questions

• Should we be allowing some way to opt-in/-out of specific events so you can hook to specific ones (just Loaded, just Unloaded, etc.)
• Is this going to be a set of APs like ControlExtensions.AttachToLifecycleEvents="{Binding ElementName="MyControl"}" and the something like ControlExtensions.OnLifecycleEvent="EventHandlerMethodName" where EventHandlerMethodName would have some sort of event args that brings in the sender and the event name, described by some enum? (Loaded, Unloaded, etc) as well as the root event's args.
• Do we perhaps want to hook to the app lifecycle events as well?

[Xiaoy312]

ControlExtensions.AttachToLifecycleEvents="{Binding ElementName="MyControl"}"
ControlExtensions.OnLifecycleEvent="EventHandlerMethodName"

whats an usage example for this? or, what are we trying to accomplish here? what are you doing with these events?
also why are we passing in another control (assuming this isnt the sender/owner of dp) or the control itself to the AttachToLifecycleEvents dp?
...

for application lifecycle events, typically we would use a class to register these, and push via Observable/Feed or dp states through an interface that the view-model can resolve. i dont see why you would want to hook it up via attached-dp

[kazo0]

This was just a thought from a brainstorm with some team members

[Xiaoy312]

quick note is fine, but it is best to re-define clearly while you still remember