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/*
* Copyright (C) 2010 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.android.inputmethod.keyboard;
import java.util.LinkedList;
public class PointerTrackerQueue {
private LinkedList<PointerTracker> mQueue = new LinkedList<PointerTracker>();
public void add(PointerTracker tracker) {
mQueue.add(tracker);
}
public void releaseAllPointersOlderThan(PointerTracker tracker, long eventTime) {
if (mQueue.lastIndexOf(tracker) < 0) {
return;
}
final LinkedList<PointerTracker> queue = mQueue;
int oldestPos = 0;
for (PointerTracker t = queue.get(oldestPos); t != tracker; t = queue.get(oldestPos)) {
if (t.isModifier()) {
oldestPos++;
} else {
t.onPhantomUpEvent(t.getLastX(), t.getLastY(), eventTime, true);
queue.remove(oldestPos);
}
}
}
public void releaseAllPointers(long eventTime) {
releaseAllPointersExcept(null, eventTime, true);
}
public void releaseAllPointersExcept(PointerTracker tracker, long eventTime,
boolean updateReleasedKeyGraphics) {
for (PointerTracker t : mQueue) {
if (t == tracker)
continue;
t.onPhantomUpEvent(t.getLastX(), t.getLastY(), eventTime, updateReleasedKeyGraphics);
}
mQueue.clear();
if (tracker != null)
mQueue.add(tracker);
}
public void remove(PointerTracker tracker) {
mQueue.remove(tracker);
}
public boolean isInSlidingKeyInput() {
for (final PointerTracker tracker : mQueue) {
if (tracker.isInSlidingKeyInput())
return true;
}
return false;
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder("[");
for (PointerTracker tracker : mQueue) {
if (sb.length() > 1)
sb.append(" ");
sb.append(String.format("%d", tracker.mPointerId));
}
sb.append("]");
return sb.toString();
}
}
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