The GeckoEditable instance doesn't change for each nsWindow instance.
However, because a GeckoInputConnection is associated with a GeckoView,
when we create a new GeckoView, we need to attach a new
GeckoInputConnection to the existing nsWindow's GeckoEditable. This
patch makes us do that inside nsWindow::Natives::Open by calling
GeckoEditable.OnViewChange.
This patch removes the GeckoEditable code in GeckoAppShell, and make
nsWindow create a GeckoEditable for itself when opening a window.
Instead of calling GeckoAppShell, nsWindow can now call GeckoEditable
methods directly.
The PROCESS_OBJECT GeckoEvent is used to set the layer client object in
Gecko once Gecko is done loading. This patch converts it to a native
call in GeckoView.Window.
gfxIntSize is just a typedef of gfx::IntSize, so this is very mechanical. The
only tricky part is deciding for each occurrence whether to replace it with
IntSize, gfx::IntSize or mozilla::gfx::IntSize; in all cases I went with the
shortest one that worked given the existing "using namespace" declarations.
A C++ class that implments native JNI methods can choose to inherit
UsesGeckoThreadProxy. Once enabled, all native JNI calls on that class
will be automatically dispatched to the Gecko thread as a runnable event.
nsWindow will implement native methods of GeckoView.Window. This patch
implements the open method, which opens a new window in the same manner
as the CLH, and associates the new nsWindow with the GeckoView.Window
instance.
With this patch the ZoomConstraintsClient updates get broadcast via the observer
service on Android, allowing code in browser.js to switch over to using it.
There is some ambiguity about whether ScheduleComposite will necessarily
trigger a composite all the way to nsWindow::DrawWindowUnderlay. Android
robocop tests assume it will, because they rely on DrawWindowOverlay
being called so they can take a screenshot and make progress,
but this is a very fragile assumption. They also rely on the entire
window being painted, which is also a fragile assumption.
This patch improves the situation by explicitly invalidating the current
window area when Android Java code needs to trigger a composite. This avoids
regressions from future patches in this series which make composition bail
out when there is nothing invalid.
The resulting setup is still a bit fragile for my taste but I'm not sure
what the ideal solution would be.
