am d020fd33: Merge changes Ib18c99b9,I9f42eeb9 into klp-modular-dev

* commit 'd020fd33d147c88a9cda4976d2fa559e55b4ab03':
  Generate and respect ACTION_CANCEL for joystick fallbacks. DO NOT MERGE
  Adds API for determining confirm and cancel keys.

api/current.txt

@@ -26839,8 +26839,10 @@ package android.view {
     method public final boolean hasModifiers(int);
     method public final boolean hasNoModifiers();
     method public final boolean isAltPressed();
+    method public final boolean isCancelKey();
     method public final boolean isCanceled();
     method public final boolean isCapsLockOn();
+    method public final boolean isConfirmKey();
     method public final boolean isCtrlPressed();
     method public final boolean isFunctionPressed();
     method public static final boolean isGamepadButton(int);

core/java/android/view/KeyEvent.java

@@ -1847,13 +1847,32 @@ public class KeyEvent extends InputEvent implements Parcelable {
         }
     }
 
-    /** Whether key will, by default, trigger a click on the focused view.
+    /**
-     * @hide
+     * Returns true if the key event should be treated as a confirming action.
+     * @return True for a confirmation key, such as {@link #KEYCODE_DPAD_CENTER},
+     * {@link #KEYCODE_ENTER}, or {@link #KEYCODE_BUTTON_A}.
      */
-    public static final boolean isConfirmKey(int keyCode) {
+    public final boolean isConfirmKey() {
-        switch (keyCode) {
+        switch (mKeyCode) {
             case KeyEvent.KEYCODE_DPAD_CENTER:
             case KeyEvent.KEYCODE_ENTER:
+            case KeyEvent.KEYCODE_BUTTON_A:
+                return true;
+            default:
+                return false;
+        }
+    }
+
+    /**
+     * Returns true if the key event should be treated as a cancelling action.
+     * @return True for a cancellation key, such as {@link #KEYCODE_ESCAPE},
+     * {@link #KEYCODE_BACK}, or {@link #KEYCODE_BUTTON_B}.
+     */
+    public final boolean isCancelKey() {
+        switch (mKeyCode) {
+            case KeyEvent.KEYCODE_BUTTON_B:
+            case KeyEvent.KEYCODE_ESCAPE:
+            case KeyEvent.KEYCODE_BACK:
                 return true;
             default:
                 return false;

core/java/android/view/MotionEvent.java

@@ -3372,11 +3372,11 @@ public final class MotionEvent extends InputEvent implements Parcelable {
                         throw new IllegalArgumentException("Axis out of range.");
                     }
                     final long bits = mPackedAxisBits;
-                    final long axisBit = 1L << axis;
+                    final long axisBit = 0x8000000000000000L >>> axis;
                     if ((bits & axisBit) == 0) {
                         return 0;
                     }
-                    final int index = Long.bitCount(bits & (axisBit - 1L));
+                    final int index = Long.bitCount(bits & ~(0xFFFFFFFFFFFFFFFFL >>> axis));
                     return mPackedAxisValues[index];
                 }
             }
@@ -3425,8 +3425,8 @@ public final class MotionEvent extends InputEvent implements Parcelable {
                         throw new IllegalArgumentException("Axis out of range.");
                     }
                     final long bits = mPackedAxisBits;
-                    final long axisBit = 1L << axis;
+                    final long axisBit = 0x8000000000000000L >>> axis;
-                    final int index = Long.bitCount(bits & (axisBit - 1L));
+                    final int index = Long.bitCount(bits & ~(0xFFFFFFFFFFFFFFFFL >>> axis));
                     float[] values = mPackedAxisValues;
                     if ((bits & axisBit) == 0) {
                         if (values == null) {

core/java/android/view/View.java

@@ -8186,7 +8186,7 @@ public class View implements Drawable.Callback, KeyEvent.Callback,
     public boolean onKeyDown(int keyCode, KeyEvent event) {
         boolean result = false;
 
-        if (KeyEvent.isConfirmKey(keyCode)) {
+        if (event.isConfirmKey()) {
             if ((mViewFlags & ENABLED_MASK) == DISABLED) {
                 return true;
             }
@@ -8228,7 +8228,7 @@ public class View implements Drawable.Callback, KeyEvent.Callback,
      * @param event   The KeyEvent object that defines the button action.
      */
     public boolean onKeyUp(int keyCode, KeyEvent event) {
-        if (KeyEvent.isConfirmKey(keyCode)) {
+        if (event.isConfirmKey()) {
             if ((mViewFlags & ENABLED_MASK) == DISABLED) {
                 return true;
             }

core/java/android/view/ViewRootImpl.java

@@ -4319,6 +4319,7 @@ public final class ViewRootImpl implements ViewParent,
      * Creates dpad events from unhandled joystick movements.
      */
     final class SyntheticJoystickHandler extends Handler {
+        private final static String TAG = "SyntheticJoystickHandler";
         private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1;
         private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2;
 
@@ -4351,10 +4352,21 @@ public final class ViewRootImpl implements ViewParent,
         }
 
         public void process(MotionEvent event) {
+            switch(event.getActionMasked()) {
+            case MotionEvent.ACTION_CANCEL:
+                cancel(event);
+                break;
+            case MotionEvent.ACTION_MOVE:
                 update(event, true);
+                break;
+            default:
+                Log.w(TAG, "Unexpected action: " + event.getActionMasked());
+            }
         }
 
-        public void cancel(MotionEvent event) {
+        private void cancel(MotionEvent event) {
+            removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT);
+            removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT);
             update(event, false);
         }
 

core/java/android/widget/AbsListView.java

@@ -3039,7 +3039,7 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
 
     @Override
     public boolean onKeyUp(int keyCode, KeyEvent event) {
-        if (KeyEvent.isConfirmKey(keyCode)) {
+        if (event.isConfirmKey()) {
             if (!isEnabled()) {
                 return true;
             }

core/java/android/widget/Gallery.java

@@ -1228,7 +1228,7 @@ public class Gallery extends AbsSpinner implements GestureDetector.OnGestureList
 
     @Override
     public boolean onKeyUp(int keyCode, KeyEvent event) {
-        if (KeyEvent.isConfirmKey(keyCode)) {
+        if (event.isConfirmKey()) {
             if (mReceivedInvokeKeyDown) {
                 if (mItemCount > 0) {
                     dispatchPress(mSelectedChild);

core/java/android/widget/ListPopupWindow.java

@@ -843,7 +843,7 @@ public class ListPopupWindow {
             // to select one of its items
             if (keyCode != KeyEvent.KEYCODE_SPACE
                     && (mDropDownList.getSelectedItemPosition() >= 0
-                            || !KeyEvent.isConfirmKey(keyCode))) {
+                            || !event.isConfirmKey())) {
                 int curIndex = mDropDownList.getSelectedItemPosition();
                 boolean consumed;
 
@@ -931,7 +931,7 @@ public class ListPopupWindow {
     public boolean onKeyUp(int keyCode, KeyEvent event) {
         if (isShowing() && mDropDownList.getSelectedItemPosition() >= 0) {
             boolean consumed = mDropDownList.onKeyUp(keyCode, event);
-            if (consumed && KeyEvent.isConfirmKey(keyCode)) {
+            if (consumed && event.isConfirmKey()) {
                 // if the list accepts the key events and the key event was a click, the text view
                 // gets the selected item from the drop down as its content
                 dismiss();

libs/input/InputDispatcher.cpp

@@ -4105,18 +4105,39 @@ bool InputDispatcher::InputState::trackMotion(const MotionEntry* entry,
     case AMOTION_EVENT_ACTION_POINTER_UP:
     case AMOTION_EVENT_ACTION_POINTER_DOWN:
     case AMOTION_EVENT_ACTION_MOVE: {
+        if (entry->source & AINPUT_SOURCE_CLASS_NAVIGATION) {
+            // Trackballs can send MOVE events with a corresponding DOWN or UP. There's no need to
+            // generate cancellation events for these since they're based in relative rather than
+            // absolute units.
+            return true;
+        }
+
         ssize_t index = findMotionMemento(entry, false /*hovering*/);
+
+        if (entry->source & AINPUT_SOURCE_CLASS_JOYSTICK) {
+            // Joysticks can send MOVE events without a corresponding DOWN or UP. Since all
+            // joystick axes are normalized to [-1, 1] we can trust that 0 means it's neutral. Any
+            // other value and we need to track the motion so we can send cancellation events for
+            // anything generating fallback events (e.g. DPad keys for joystick movements).
+            if (index >= 0) {
+                if (entry->pointerCoords[0].isEmpty()) {
+                    mMotionMementos.removeAt(index);
+                } else {
+                    MotionMemento& memento = mMotionMementos.editItemAt(index);
+                    memento.setPointers(entry);
+                }
+            } else if (!entry->pointerCoords[0].isEmpty()) {
+                addMotionMemento(entry, flags, false /*hovering*/);
+            }
+
+            // Joysticks and trackballs can send MOVE events without corresponding DOWN or UP.
+            return true;
+        }
         if (index >= 0) {
             MotionMemento& memento = mMotionMementos.editItemAt(index);
             memento.setPointers(entry);
             return true;
         }
-        if (actionMasked == AMOTION_EVENT_ACTION_MOVE
-                && (entry->source & (AINPUT_SOURCE_CLASS_JOYSTICK
-                        | AINPUT_SOURCE_CLASS_NAVIGATION))) {
-            // Joysticks and trackballs can send MOVE events without corresponding DOWN or UP.
-            return true;
-        }
 #if DEBUG_OUTBOUND_EVENT_DETAILS
         ALOGD("Dropping inconsistent motion pointer up/down or move event: "
                 "deviceId=%d, source=%08x, actionMasked=%d",