Refactor more keys menu framework (part 3)

Make it possible to re-enter gesture input even after triggering the long-press
menu. This is useful for new users who may pause at the start of a word. Works
for both single and bi-manual gestures.

Bug: 7595193
Change-Id: Ieaecfd5385ed6c10ae9347b99c2e35a0de5e895d

java/src/com/android/inputmethod/keyboard/KeyboardView.java

@@ -1013,7 +1013,7 @@ public class KeyboardView extends View implements PointerTracker.DrawingProxy,
     public void closing() {
         dismissAllKeyPreviews();
         cancelAllMessages();
-
+        onCancelMoreKeysPanel();
         mInvalidateAllKeys = true;
         requestLayout();
     }
@@ -1031,11 +1031,11 @@ public class KeyboardView extends View implements PointerTracker.DrawingProxy,
         return (mMoreKeysPanel != null);
     }
 
-    public boolean dismissMoreKeysPanel() {
+    @Override
+    public void onCancelMoreKeysPanel() {
         if (isShowingMoreKeysPanel()) {
-            return mMoreKeysPanel.dismissMoreKeysPanel();
+            mMoreKeysPanel.dismissMoreKeysPanel();
         }
-        return false;
     }
 
     @Override

java/src/com/android/inputmethod/keyboard/MainKeyboardView.java

@@ -844,10 +844,16 @@ public final class MainKeyboardView extends KeyboardView implements PointerTrack
     @Override
     public void closing() {
         super.closing();
-        dismissMoreKeysPanel();
+        onCancelMoreKeysPanel();
         mMoreKeysPanelCache.clear();
     }
 
+    @Override
+    public void onCancelMoreKeysPanel() {
+        super.onCancelMoreKeysPanel();
+        PointerTracker.dismissAllMoreKeysPanels();
+    }
+
     @Override
     public boolean onDismissMoreKeysPanel() {
         dimEntireKeyboard(false /* dimmed */);

java/src/com/android/inputmethod/keyboard/MoreKeysKeyboardView.java

@@ -120,7 +120,15 @@ public class MoreKeysKeyboardView extends KeyboardView implements MoreKeysPanel
 
     @Override
     public void onMoveEvent(int x, int y, final int pointerId, long eventTime) {
+        if (mActivePointerId != pointerId) {
+            return;
+        }
+        final boolean hasOldKey = (mCurrentKey != null);
         onMoveKeyInternal(x, y, pointerId);
+        if (hasOldKey && mCurrentKey == null) {
+            // If the pointer has moved too far away from any target then cancel the panel.
+            mController.onCancelMoreKeysPanel();
+        }
     }
 
     @Override

java/src/com/android/inputmethod/keyboard/MoreKeysPanel.java

@@ -30,6 +30,11 @@ public interface MoreKeysPanel {
          * Remove the current {@link MoreKeysPanel} from the target view.
          */
         public boolean onDismissMoreKeysPanel();
+
+        /**
+         * Instructs the parent to cancel the panel (e.g., when entering a different input mode).
+         */
+        public void onCancelMoreKeysPanel();
     }
 
     /**

java/src/com/android/inputmethod/keyboard/PointerTracker.java

@@ -412,6 +412,17 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
         }
     }
 
+    public static void dismissAllMoreKeysPanels() {
+        final int trackersSize = sTrackers.size();
+        for (int i = 0; i < trackersSize; ++i) {
+            final PointerTracker tracker = sTrackers.get(i);
+            if (tracker.isShowingMoreKeysPanel()) {
+                tracker.mMoreKeysPanel.dismissMoreKeysPanel();
+                tracker.mMoreKeysPanel = null;
+            }
+        }
+    }
+
     private PointerTracker(final int id, final KeyEventHandler handler) {
         if (handler == null) {
             throw new NullPointerException();
@@ -715,6 +726,7 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
             sLastRecognitionPointSize = 0;
             sLastRecognitionTime = 0;
             mListener.onStartBatchInput();
+            dismissAllMoreKeysPanels();
         }
         mTimerProxy.cancelLongPressTimer();
         mDrawingProxy.showGesturePreviewTrail(this, isOldestTrackerInQueue(this));
@@ -846,7 +858,7 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
         }
         // A gesture should start only from a non-modifier key.
         mIsDetectingGesture = (mKeyboard != null) && mKeyboard.mId.isAlphabetKeyboard()
-                && !isShowingMoreKeysPanel() && key != null && !key.isModifier();
+                && key != null && !key.isModifier();
         if (mIsDetectingGesture) {
             if (getActivePointerTrackerCount() == 1) {
                 sGestureFirstDownTime = eventTime;
@@ -907,6 +919,11 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
                 cancelBatchInput();
                 return;
             }
+            // If the MoreKeysPanel is showing then do not attempt to enter gesture mode. However,
+            // the gestured touch points are still being recorded in case the panel is dismissed.
+            if (isShowingMoreKeysPanel()) {
+                return;
+            }
             mayStartBatchInput(key);
             if (sInGesture) {
                 mayUpdateBatchInput(eventTime, key);
@@ -926,7 +943,6 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
             final int translatedX = mMoreKeysPanel.translateX(x);
             final int translatedY = mMoreKeysPanel.translateY(y);
             mMoreKeysPanel.onMoveEvent(translatedX, translatedY, mPointerId, eventTime);
-            return;
         }
 
         if (sShouldHandleGesture && me != null) {
@@ -941,6 +957,11 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
                         false /* isMajorEvent */, null);
             }
         }
+
+        if (isShowingMoreKeysPanel()) {
+            // Do not handle sliding keys (or show key pop-ups) when the MoreKeysPanel is visible.
+            return;
+        }
         onMoveEventInternal(x, y, eventTime);
     }
 
@@ -1199,9 +1220,11 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
         mTimerProxy.cancelKeyTimers();
         setReleasedKeyGraphics(mCurrentKey);
         resetSlidingKeyInput();
+        if (isShowingMoreKeysPanel()) {
             mMoreKeysPanel.dismissMoreKeysPanel();
             mMoreKeysPanel = null;
         }
+    }
 
     private void startRepeatKey(final Key key) {
         if (key != null && key.isRepeatable() && !sInGesture) {

java/src/com/android/inputmethod/latin/suggestions/SuggestionStripView.java

@@ -684,6 +684,11 @@ public final class SuggestionStripView extends RelativeLayout implements OnClick
         public void onShowMoreKeysPanel(MoreKeysPanel panel) {
             mKeyboardView.onShowMoreKeysPanel(panel);
         }
+
+        @Override
+        public void onCancelMoreKeysPanel() {
+            dismissMoreSuggestions();
+        }
     };
 
     boolean dismissMoreSuggestions() {