a492c3a7b2
This patch introduces the ability to create a Context that is bound to a Display. The context gets its configuration and metrics from that display and is able to provide a WindowManager that is bound to the display. To make it easier to use, we also add a new kind of Dialog called a Presentation. Presentation takes care of setting up the context as needed and watches for significant changes in the display configuration. If the display is removed, then the presentation simply dismisses itself. Change-Id: Idc54b4ec84b1ff91505cfb78910cf8cd09696d7d