Implement native key pre-dispatching to IMEs.

This significantly re-works the native key dispatching code to
allow events to be pre-dispatched to the current IME before
being processed by native code.  It introduces one new public
API, which must be called after retrieving an event if the app
wishes for it to be pre-dispatched.

Currently the native code will only do pre-dispatching of
system keys, to avoid significant overhead for gaming input.
This should be improved to be smarted, filtering for only
keys that the IME is interested in.  Unfortunately IMEs don't
currently provide this information. :p

Change-Id: Ic1c7aeec8b348164957f2cd88119eb5bd85c2a9f

1 files changed, 2 insertions, 0 deletions

diff --git a/include/ui/Input.h b/include/ui/Input.h
index f069888..d9b1091 100644
--- a/include/ui/Input.h
+++ b/include/ui/Input.h
@@ -152,6 +152,7 @@ public:
     
 protected:
     void initialize(int32_t deviceId, int32_t source);
+    void initialize(const InputEvent& from);
 
 private:
     int32_t mDeviceId;
@@ -202,6 +203,7 @@ public:
             int32_t repeatCount,
             nsecs_t downTime,
             nsecs_t eventTime);
+    void initialize(const KeyEvent& from);
 
 private:
     int32_t mAction;