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Merge "Use private object as a lock instead of synchronized method"
This commit is contained in:
Tadashi G. Takaoka
Android (Google) Code Review
commit
c7d4158979
@ -34,175 +34,197 @@ public final class PointerTrackerQueue {
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}
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private static final int INITIAL_CAPACITY = 10;
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// Note: {@link #mExpandableArrayOfActivePointers} and {@link #mArraySize} are synchronized by
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// {@link #mExpandableArrayOfActivePointers}
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private final ArrayList<Element> mExpandableArrayOfActivePointers =
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CollectionUtils.newArrayList(INITIAL_CAPACITY);
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private int mArraySize = 0;
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public synchronized int size() {
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return mArraySize;
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}
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public synchronized void add(final Element pointer) {
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final ArrayList<Element> expandableArray = mExpandableArrayOfActivePointers;
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final int arraySize = mArraySize;
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if (arraySize < expandableArray.size()) {
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expandableArray.set(arraySize, pointer);
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} else {
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expandableArray.add(pointer);
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public int size() {
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synchronized (mExpandableArrayOfActivePointers) {
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return mArraySize;
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}
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mArraySize = arraySize + 1;
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}
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public synchronized void remove(final Element pointer) {
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final ArrayList<Element> expandableArray = mExpandableArrayOfActivePointers;
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final int arraySize = mArraySize;
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int newSize = 0;
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for (int index = 0; index < arraySize; index++) {
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final Element element = expandableArray.get(index);
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if (element == pointer) {
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public void add(final Element pointer) {
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synchronized (mExpandableArrayOfActivePointers) {
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final ArrayList<Element> expandableArray = mExpandableArrayOfActivePointers;
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final int arraySize = mArraySize;
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if (arraySize < expandableArray.size()) {
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expandableArray.set(arraySize, pointer);
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} else {
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expandableArray.add(pointer);
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}
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mArraySize = arraySize + 1;
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}
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}
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public void remove(final Element pointer) {
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synchronized (mExpandableArrayOfActivePointers) {
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final ArrayList<Element> expandableArray = mExpandableArrayOfActivePointers;
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final int arraySize = mArraySize;
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int newSize = 0;
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for (int index = 0; index < arraySize; index++) {
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final Element element = expandableArray.get(index);
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if (element == pointer) {
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if (newSize != index) {
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Log.w(TAG, "Found duplicated element in remove: " + pointer);
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}
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continue; // Remove this element from the expandableArray.
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}
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if (newSize != index) {
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Log.w(TAG, "Found duplicated element in remove: " + pointer);
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// Shift this element toward the beginning of the expandableArray.
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expandableArray.set(newSize, element);
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}
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continue; // Remove this element from the expandableArray.
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}
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if (newSize != index) {
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// Shift this element toward the beginning of the expandableArray.
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expandableArray.set(newSize, element);
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}
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newSize++;
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}
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mArraySize = newSize;
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}
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public synchronized Element getOldestElement() {
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return (mArraySize == 0) ? null : mExpandableArrayOfActivePointers.get(0);
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}
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public synchronized void releaseAllPointersOlderThan(final Element pointer,
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final long eventTime) {
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if (DEBUG) {
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Log.d(TAG, "releaseAllPoniterOlderThan: " + pointer + " " + this);
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}
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final ArrayList<Element> expandableArray = mExpandableArrayOfActivePointers;
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final int arraySize = mArraySize;
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int newSize, index;
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for (newSize = index = 0; index < arraySize; index++) {
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final Element element = expandableArray.get(index);
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if (element == pointer) {
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break; // Stop releasing elements.
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}
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if (!element.isModifier()) {
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element.onPhantomUpEvent(eventTime);
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continue; // Remove this element from the expandableArray.
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}
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if (newSize != index) {
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// Shift this element toward the beginning of the expandableArray.
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expandableArray.set(newSize, element);
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}
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newSize++;
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}
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// Shift rest of the expandableArray.
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int count = 0;
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for (; index < arraySize; index++) {
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final Element element = expandableArray.get(index);
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if (element == pointer) {
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if (count > 0) {
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Log.w(TAG, "Found duplicated element in releaseAllPointersOlderThan: "
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+ pointer);
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}
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count++;
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}
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if (newSize != index) {
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expandableArray.set(newSize, expandableArray.get(index));
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newSize++;
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}
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mArraySize = newSize;
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}
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}
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public Element getOldestElement() {
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synchronized (mExpandableArrayOfActivePointers) {
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return (mArraySize == 0) ? null : mExpandableArrayOfActivePointers.get(0);
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}
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}
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public void releaseAllPointersOlderThan(final Element pointer, final long eventTime) {
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synchronized (mExpandableArrayOfActivePointers) {
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if (DEBUG) {
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Log.d(TAG, "releaseAllPoniterOlderThan: " + pointer + " " + this);
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}
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final ArrayList<Element> expandableArray = mExpandableArrayOfActivePointers;
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final int arraySize = mArraySize;
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int newSize, index;
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for (newSize = index = 0; index < arraySize; index++) {
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final Element element = expandableArray.get(index);
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if (element == pointer) {
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break; // Stop releasing elements.
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}
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if (!element.isModifier()) {
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element.onPhantomUpEvent(eventTime);
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continue; // Remove this element from the expandableArray.
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}
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if (newSize != index) {
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// Shift this element toward the beginning of the expandableArray.
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expandableArray.set(newSize, element);
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}
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newSize++;
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}
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// Shift rest of the expandableArray.
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int count = 0;
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for (; index < arraySize; index++) {
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final Element element = expandableArray.get(index);
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if (element == pointer) {
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if (count > 0) {
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Log.w(TAG, "Found duplicated element in releaseAllPointersOlderThan: "
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+ pointer);
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}
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count++;
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}
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if (newSize != index) {
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expandableArray.set(newSize, expandableArray.get(index));
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newSize++;
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}
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}
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mArraySize = newSize;
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}
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mArraySize = newSize;
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}
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public void releaseAllPointers(final long eventTime) {
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releaseAllPointersExcept(null, eventTime);
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}
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public synchronized void releaseAllPointersExcept(final Element pointer,
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final long eventTime) {
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if (DEBUG) {
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if (pointer == null) {
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Log.d(TAG, "releaseAllPoniters: " + this);
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} else {
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Log.d(TAG, "releaseAllPoniterExcept: " + pointer + " " + this);
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}
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}
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final ArrayList<Element> expandableArray = mExpandableArrayOfActivePointers;
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final int arraySize = mArraySize;
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int newSize = 0, count = 0;
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for (int index = 0; index < arraySize; index++) {
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final Element element = expandableArray.get(index);
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if (element == pointer) {
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if (count > 0) {
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Log.w(TAG, "Found duplicated element in releaseAllPointersExcept: " + pointer);
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public void releaseAllPointersExcept(final Element pointer, final long eventTime) {
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synchronized (mExpandableArrayOfActivePointers) {
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if (DEBUG) {
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if (pointer == null) {
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Log.d(TAG, "releaseAllPoniters: " + this);
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} else {
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Log.d(TAG, "releaseAllPoniterExcept: " + pointer + " " + this);
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}
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count++;
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} else {
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element.onPhantomUpEvent(eventTime);
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continue; // Remove this element from the expandableArray.
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}
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if (newSize != index) {
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// Shift this element toward the beginning of the expandableArray.
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expandableArray.set(newSize, element);
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final ArrayList<Element> expandableArray = mExpandableArrayOfActivePointers;
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final int arraySize = mArraySize;
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int newSize = 0, count = 0;
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for (int index = 0; index < arraySize; index++) {
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final Element element = expandableArray.get(index);
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if (element == pointer) {
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if (count > 0) {
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Log.w(TAG, "Found duplicated element in releaseAllPointersExcept: "
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+ pointer);
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}
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count++;
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} else {
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element.onPhantomUpEvent(eventTime);
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continue; // Remove this element from the expandableArray.
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}
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if (newSize != index) {
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// Shift this element toward the beginning of the expandableArray.
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expandableArray.set(newSize, element);
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}
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newSize++;
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}
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newSize++;
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mArraySize = newSize;
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}
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mArraySize = newSize;
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}
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public synchronized boolean hasModifierKeyOlderThan(final Element pointer) {
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final ArrayList<Element> expandableArray = mExpandableArrayOfActivePointers;
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final int arraySize = mArraySize;
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for (int index = 0; index < arraySize; index++) {
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final Element element = expandableArray.get(index);
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if (element == pointer) {
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return false; // Stop searching modifier key.
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}
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if (element.isModifier()) {
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return true;
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public boolean hasModifierKeyOlderThan(final Element pointer) {
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synchronized (mExpandableArrayOfActivePointers) {
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final ArrayList<Element> expandableArray = mExpandableArrayOfActivePointers;
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final int arraySize = mArraySize;
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for (int index = 0; index < arraySize; index++) {
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final Element element = expandableArray.get(index);
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if (element == pointer) {
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return false; // Stop searching modifier key.
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}
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if (element.isModifier()) {
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return true;
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}
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}
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return false;
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}
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return false;
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}
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public synchronized boolean isAnyInSlidingKeyInput() {
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final ArrayList<Element> expandableArray = mExpandableArrayOfActivePointers;
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final int arraySize = mArraySize;
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for (int index = 0; index < arraySize; index++) {
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final Element element = expandableArray.get(index);
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if (element.isInSlidingKeyInput()) {
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return true;
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public boolean isAnyInSlidingKeyInput() {
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synchronized (mExpandableArrayOfActivePointers) {
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final ArrayList<Element> expandableArray = mExpandableArrayOfActivePointers;
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final int arraySize = mArraySize;
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for (int index = 0; index < arraySize; index++) {
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final Element element = expandableArray.get(index);
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if (element.isInSlidingKeyInput()) {
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return true;
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}
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}
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return false;
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}
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return false;
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}
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public synchronized void cancelAllPointerTracker() {
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final ArrayList<Element> expandableArray = mExpandableArrayOfActivePointers;
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final int arraySize = mArraySize;
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for (int index = 0; index < arraySize; index++) {
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final Element element = expandableArray.get(index);
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element.cancelTracking();
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public void cancelAllPointerTracker() {
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synchronized (mExpandableArrayOfActivePointers) {
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final ArrayList<Element> expandableArray = mExpandableArrayOfActivePointers;
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final int arraySize = mArraySize;
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for (int index = 0; index < arraySize; index++) {
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final Element element = expandableArray.get(index);
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element.cancelTracking();
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}
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}
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}
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@Override
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public synchronized String toString() {
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final StringBuilder sb = new StringBuilder();
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final ArrayList<Element> expandableArray = mExpandableArrayOfActivePointers;
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final int arraySize = mArraySize;
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for (int index = 0; index < arraySize; index++) {
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final Element element = expandableArray.get(index);
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if (sb.length() > 0)
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sb.append(" ");
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sb.append(element.toString());
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public String toString() {
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synchronized (mExpandableArrayOfActivePointers) {
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final StringBuilder sb = new StringBuilder();
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final ArrayList<Element> expandableArray = mExpandableArrayOfActivePointers;
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final int arraySize = mArraySize;
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for (int index = 0; index < arraySize; index++) {
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final Element element = expandableArray.get(index);
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if (sb.length() > 0) {
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sb.append(" ");
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}
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sb.append(element.toString());
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}
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return "[" + sb.toString() + "]";
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}
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return "[" + sb.toString() + "]";
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}
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}
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