Add PointerTrackerQueue unit tests

This is a groundwork to elminate LinkedList from PointerTrackerQueue.

Change-Id: Ib77780537ceb0b4273fb8e483977ab76124c5ce7

2 files changed, 37 insertions, 32 deletions

diff --git a/java/src/com/android/inputmethod/keyboard/PointerTracker.java b/java/src/com/android/inputmethod/keyboard/PointerTracker.java
index e7e11f481..184011ffe 100644
--- a/java/src/com/android/inputmethod/keyboard/PointerTracker.java
+++ b/java/src/com/android/inputmethod/keyboard/PointerTracker.java
@@ -34,7 +34,7 @@ import com.android.inputmethod.research.ResearchLogger;
 
 import java.util.ArrayList;
 
-public class PointerTracker {
+public class PointerTracker implements PointerTrackerQueue.ElementActions {
     private static final String TAG = PointerTracker.class.getSimpleName();
     private static final boolean DEBUG_EVENT = false;
     private static final boolean DEBUG_MOVE_EVENT = false;
@@ -414,6 +414,7 @@ public class PointerTracker {
         mKeyQuarterWidthSquared = keyQuarterWidth * keyQuarterWidth;
     }
 
+    @Override
     public boolean isInSlidingKeyInput() {
         return mIsInSlidingKeyInput;
     }
@@ -422,6 +423,7 @@ public class PointerTracker {
         return mCurrentKey;
     }
 
+    @Override
     public boolean isModifier() {
         return mCurrentKey != null && mCurrentKey.isModifier();
     }
@@ -805,7 +807,7 @@ public class PointerTracker {
                         if (ProductionFlag.IS_EXPERIMENTAL) {
                             ResearchLogger.pointerTracker_onMoveEvent(x, y, lastX, lastY);
                         }
-                        onUpEventInternal(x, y, eventTime);
+                        onUpEventInternal();
                         onDownEventInternal(x, y, eventTime);
                     } else {
                         // HACK: If there are currently multiple touches, register the key even if
@@ -815,7 +817,7 @@ public class PointerTracker {
                         // this hack.
                         if (me != null && me.getPointerCount() > 1
                                 && !sPointerTrackerQueue.hasModifierKeyOlderThan(this)) {
-                            onUpEventInternal(x, y, eventTime);
+                            onUpEventInternal();
                         }
                         if (!mIsPossibleGesture) {
                             mKeyAlreadyProcessed = true;
@@ -860,20 +862,21 @@ public class PointerTracker {
             }
             queue.remove(this);
         }
-        onUpEventInternal(x, y, eventTime);
+        onUpEventInternal();
     }
 
     // Let this pointer tracker know that one of newer-than-this pointer trackers got an up event.
     // This pointer tracker needs to keep the key top graphics "pressed", but needs to get a
     // "virtual" up event.
-    public void onPhantomUpEvent(int x, int y, long eventTime) {
+    @Override
+    public void onPhantomUpEvent(long eventTime) {
         if (DEBUG_EVENT)
-            printTouchEvent("onPhntEvent:", x, y, eventTime);
-        onUpEventInternal(x, y, eventTime);
+            printTouchEvent("onPhntEvent:", getLastX(), getLastY(), eventTime);
+        onUpEventInternal();
         mKeyAlreadyProcessed = true;
     }
 
-    private void onUpEventInternal(int x, int y, long eventTime) {
+    private void onUpEventInternal() {
         mTimerProxy.cancelKeyTimers();
         mIsInSlidingKeyInput = false;
         mIsPossibleGesture = false;
diff --git a/java/src/com/android/inputmethod/keyboard/internal/PointerTrackerQueue.java b/java/src/com/android/inputmethod/keyboard/internal/PointerTrackerQueue.java
index e4a71844a..bd1648014 100644
--- a/java/src/com/android/inputmethod/keyboard/internal/PointerTrackerQueue.java
+++ b/java/src/com/android/inputmethod/keyboard/internal/PointerTrackerQueue.java
@@ -18,9 +18,6 @@ package com.android.inputmethod.keyboard.internal;
 
 import android.util.Log;
 
-import com.android.inputmethod.keyboard.Keyboard;
-import com.android.inputmethod.keyboard.PointerTracker;
-
 import java.util.Iterator;
 import java.util.LinkedList;
 
@@ -28,37 +25,43 @@ public class PointerTrackerQueue {
     private static final String TAG = PointerTrackerQueue.class.getSimpleName();
     private static final boolean DEBUG = false;
 
+    public interface ElementActions {
+        public boolean isModifier();
+        public boolean isInSlidingKeyInput();
+        public void onPhantomUpEvent(long eventTime);
+    }
+
     // TODO: Use ring buffer instead of {@link LinkedList}.
-    private final LinkedList<PointerTracker> mQueue = new LinkedList<PointerTracker>();
+    private final LinkedList<ElementActions> mQueue = new LinkedList<ElementActions>();
 
     public int size() {
         return mQueue.size();
     }
 
-    public synchronized void add(PointerTracker tracker) {
+    public synchronized void add(ElementActions tracker) {
         mQueue.add(tracker);
     }
 
-    public synchronized void remove(PointerTracker tracker) {
+    public synchronized void remove(ElementActions tracker) {
         mQueue.remove(tracker);
     }
 
-    public synchronized void releaseAllPointersOlderThan(PointerTracker tracker,
+    public synchronized void releaseAllPointersOlderThan(ElementActions tracker,
             long eventTime) {
         if (DEBUG) {
-            Log.d(TAG, "releaseAllPoniterOlderThan: [" + tracker.mPointerId + "] " + this);
+            Log.d(TAG, "releaseAllPoniterOlderThan: " + tracker + " " + this);
         }
         if (!mQueue.contains(tracker)) {
             return;
         }
-        final Iterator<PointerTracker> it = mQueue.iterator();
+        final Iterator<ElementActions> it = mQueue.iterator();
         while (it.hasNext()) {
-            final PointerTracker t = it.next();
+            final ElementActions t = it.next();
             if (t == tracker) {
                 break;
             }
             if (!t.isModifier()) {
-                t.onPhantomUpEvent(t.getLastX(), t.getLastY(), eventTime);
+                t.onPhantomUpEvent(eventTime);
                 it.remove();
             }
         }
@@ -68,28 +71,28 @@ public class PointerTrackerQueue {
         releaseAllPointersExcept(null, eventTime);
     }
 
-    public synchronized void releaseAllPointersExcept(PointerTracker tracker, long eventTime) {
+    public synchronized void releaseAllPointersExcept(ElementActions tracker, long eventTime) {
         if (DEBUG) {
             if (tracker == null) {
                 Log.d(TAG, "releaseAllPoniters: " + this);
             } else {
-                Log.d(TAG, "releaseAllPoniterExcept: [" + tracker.mPointerId + "] " + this);
+                Log.d(TAG, "releaseAllPoniterExcept: " + tracker + " " + this);
             }
         }
-        final Iterator<PointerTracker> it = mQueue.iterator();
+        final Iterator<ElementActions> it = mQueue.iterator();
         while (it.hasNext()) {
-            final PointerTracker t = it.next();
+            final ElementActions t = it.next();
             if (t != tracker) {
-                t.onPhantomUpEvent(t.getLastX(), t.getLastY(), eventTime);
+                t.onPhantomUpEvent(eventTime);
                 it.remove();
             }
         }
     }
 
-    public synchronized boolean hasModifierKeyOlderThan(PointerTracker tracker) {
-        final Iterator<PointerTracker> it = mQueue.iterator();
+    public synchronized boolean hasModifierKeyOlderThan(ElementActions tracker) {
+        final Iterator<ElementActions> it = mQueue.iterator();
         while (it.hasNext()) {
-            final PointerTracker t = it.next();
+            final ElementActions t = it.next();
             if (t == tracker) {
                 break;
             }
@@ -101,7 +104,7 @@ public class PointerTrackerQueue {
     }
 
     public synchronized boolean isAnyInSlidingKeyInput() {
-        for (final PointerTracker tracker : mQueue) {
+        for (final ElementActions tracker : mQueue) {
             if (tracker.isInSlidingKeyInput()) {
                 return true;
             }
@@ -112,12 +115,11 @@ public class PointerTrackerQueue {
     @Override
     public String toString() {
         final StringBuilder sb = new StringBuilder();
-        for (final PointerTracker tracker : mQueue) {
+        for (final ElementActions tracker : mQueue) {
             if (sb.length() > 0)
                 sb.append(" ");
-            sb.append("[" + tracker.mPointerId + " "
-                + Keyboard.printableCode(tracker.getKey().mCode) + "]");
+            sb.append(tracker.toString());
         }
-        return sb.toString();
+        return "[" + sb.toString() + "]";
     }
 }