[HW12] Use the consumed status of the Event.

Change-Id: I1619f6132f8f71bc1291fd6a5604a5e1e3431ae2

3 files changed, 25 insertions, 5 deletions

diff --git a/java/src/com/android/inputmethod/event/CombinerChain.java b/java/src/com/android/inputmethod/event/CombinerChain.java
index f69bf4fd0..2d2731f21 100644
--- a/java/src/com/android/inputmethod/event/CombinerChain.java
+++ b/java/src/com/android/inputmethod/event/CombinerChain.java
@@ -82,6 +82,13 @@ public class CombinerChain {
         }
     }
 
+    private void updateStateFeedback() {
+        mStateFeedback.clear();
+        for (int i = mCombiners.size() - 1; i >= 0; --i) {
+            mStateFeedback.append(mCombiners.get(i).getCombiningStateFeedback());
+        }
+    }
+
     /**
      * Process an event through the combining chain, and return a processed event to apply.
      * @param previousEvents the list of previous events in this composition
@@ -97,7 +104,13 @@ public class CombinerChain {
             // A combiner can never return more than one event; it can return several
             // code points, but they should be encapsulated within one event.
             event = combiner.processEvent(modifiablePreviousEvents, event);
+            if (event.isConsumed()) {
+                // If the event is consumed, then we don't pass it to subsequent combiners:
+                // they should not see it at all.
+                break;
+            }
         }
+        updateStateFeedback();
         return event;
     }
 
@@ -121,10 +134,7 @@ public class CombinerChain {
                 }
             }
         }
-        mStateFeedback.clear();
-        for (int i = mCombiners.size() - 1; i >= 0; --i) {
-            mStateFeedback.append(mCombiners.get(i).getCombiningStateFeedback());
-        }
+        updateStateFeedback();
     }
 
     /**
diff --git a/java/src/com/android/inputmethod/event/DeadKeyCombiner.java b/java/src/com/android/inputmethod/event/DeadKeyCombiner.java
index d816247d8..4f3f4d25f 100644
--- a/java/src/com/android/inputmethod/event/DeadKeyCombiner.java
+++ b/java/src/com/android/inputmethod/event/DeadKeyCombiner.java
@@ -36,10 +36,16 @@ public class DeadKeyCombiner implements Combiner {
     @Nonnull
     public Event processEvent(final ArrayList<Event> previousEvents, final Event event) {
         if (TextUtils.isEmpty(mDeadSequence)) {
+            // No dead char is currently being tracked: this is the most common case.
             if (event.isDead()) {
+                // The event was a dead key. Start tracking it.
                 mDeadSequence.appendCodePoint(event.mCodePoint);
+                return Event.createConsumedEvent(event);
             }
-            return Event.createConsumedEvent(event);
+            // Regular keystroke when not keeping track of a dead key. Simply said, there are
+            // no dead keys at all in the current input, so this combiner has nothing to do and
+            // simply returns the event as is. The majority of events will go through this path.
+            return event;
         } else {
             // TODO: Allow combining for several dead chars rather than only the first one.
             // The framework doesn't know how to do this now.
diff --git a/java/src/com/android/inputmethod/event/Event.java b/java/src/com/android/inputmethod/event/Event.java
index 98c827423..f02f7885a 100644
--- a/java/src/com/android/inputmethod/event/Event.java
+++ b/java/src/com/android/inputmethod/event/Event.java
@@ -227,6 +227,7 @@ public class Event {
      * @return an identical event marked as consumed.
      */
     public static Event createConsumedEvent(final Event source) {
+        // A consumed event should not input any text at all, so we pass the empty string as text.
         return new Event(source.mEventType, source.mText, source.mCodePoint, source.mKeyCode,
                 source.mX, source.mY, source.mSuggestedWordInfo, source.mFlags | FLAG_CONSUMED,
                 source.mNextEvent);
@@ -267,6 +268,9 @@ public class Event {
     }
 
     public CharSequence getTextToCommit() {
+        if (isConsumed()) {
+            return ""; // A consumed event should input no text.
+        }
         switch (mEventType) {
         case EVENT_TYPE_MODE_KEY:
         case EVENT_TYPE_NOT_HANDLED: