projects/dwt2: org.eclipse.core.databinding.observable/src/org/eclipse/core/databinding/observable/set/UnionSet.d annotate

author	Frank Benoit <benoit@tionex.de>
date	Tue, 21 Apr 2009 10:55:51 +0200
parents
children	b74ac5dfcc06

rev	line source
95 6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	1 /*******************************************************************************
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	2 * Copyright (c) 2006, 2008 IBM Corporation and others.
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	3 * All rights reserved. This program and the accompanying materials
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	4 * are made available under the terms of the Eclipse Public License v1.0
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	5 * which accompanies this distribution, and is available at
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	6 * http://www.eclipse.org/legal/epl-v10.html
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	7 *
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	8 * Contributors:
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	9 * IBM Corporation - initial API and implementation
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	10 * Matthew Hall - bug 208332
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	11 *******************************************************************************/
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	12
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	13 package org.eclipse.core.databinding.observable.set;
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	14
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	15 import java.util.ArrayList;
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	16 import java.util.Collection;
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	17 import java.util.HashMap;
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	18 import java.util.HashSet;
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	19 import java.util.Iterator;
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	20 import java.util.Set;
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	21
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	22 import org.eclipse.core.databinding.observable.Diffs;
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	23 import org.eclipse.core.databinding.observable.Realm;
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	24 import org.eclipse.core.internal.databinding.observable.IStalenessConsumer;
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	25 import org.eclipse.core.internal.databinding.observable.StalenessTracker;
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	26
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	27 /**
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	28 * Represents a set consisting of the union of elements from one or more other
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	29 * sets. This object does not need to be explicitly disposed. If nobody is
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	30 * listening to the UnionSet, the set will remove its listeners.
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	31 *
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	32 * <p>
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	33 * This class is thread safe. All state accessing methods must be invoked from
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	34 * the {@link Realm#isCurrent() current realm}. Methods for adding and removing
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	35 * listeners may be invoked from any thread.
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	36 * </p>
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	37 *
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	38 * @since 1.0
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	39 */
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	40 public final class UnionSet : ObservableSet {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	41
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	42 /**
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	43 * child sets
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	44 */
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	45 private IObservableSet[] childSets;
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	46
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	47 private bool stale = false;
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	48
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	49 /**
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	50 * Map of elements onto Integer reference counts. This map is constructed
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	51 * when the first listener is added to the union set. Null if nobody is
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	52 * listening to the UnionSet.
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	53 */
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	54 private HashMap refCounts = null;
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	55
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	56 private StalenessTracker stalenessTracker;
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	57
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	58 /**
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	59 * @param childSets
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	60 */
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	61 public this(IObservableSet[] childSets) {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	62 super(childSets[0].getRealm(), null, childSets[0].getElementType());
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	63 System.arraycopy(childSets, 0, this.childSets = new IObservableSet[childSets.length], 0, childSets.length);
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	64 this.stalenessTracker = new StalenessTracker(childSets,
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	65 stalenessConsumer);
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	66 }
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	67
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	68 private ISetChangeListener childSetChangeListener = new class() ISetChangeListener {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	69 public void handleSetChange(SetChangeEvent event) {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	70 processAddsAndRemoves(event.diff.getAdditions(), event.diff.getRemovals());
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	71 }
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	72 };
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	73
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	74 private IStalenessConsumer stalenessConsumer = new class() IStalenessConsumer {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	75 public void setStale(bool stale) {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	76 bool oldStale = this.outer.stale;
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	77 this.outer.stale = stale;
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	78 if (stale && !oldStale) {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	79 fireStale();
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	80 }
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	81 }
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	82 };
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	83
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	84 public bool isStale() {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	85 getterCalled();
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	86 if (refCounts !is null) {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	87 return stale;
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	88 }
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	89
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	90 for (int i = 0; i < childSets.length; i++) {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	91 IObservableSet childSet = childSets[i];
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	92
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	93 if (childSet.isStale()) {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	94 return true;
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	95 }
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	96 }
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	97 return false;
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	98 }
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	99
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	100 private void processAddsAndRemoves(Set adds, Set removes) {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	101 Set addsToFire = new HashSet();
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	102 Set removesToFire = new HashSet();
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	103
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	104 for (Iterator iter = adds.iterator(); iter.hasNext();) {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	105 Object added = iter.next();
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	106
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	107 Integer refCount = cast(Integer) refCounts.get(added);
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	108 if (refCount is null) {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	109 refCounts.put(added, new Integer(1));
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	110 addsToFire.add(added);
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	111 } else {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	112 int refs = refCount.intValue();
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	113 refCount = new Integer(refs + 1);
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	114 refCounts.put(added, refCount);
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	115 }
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	116 }
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	117
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	118 for (Iterator iter = removes.iterator(); iter.hasNext();) {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	119 Object removed = iter.next();
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	120
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	121 Integer refCount = cast(Integer) refCounts.get(removed);
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	122 if (refCount !is null) {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	123 int refs = refCount.intValue();
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	124 if (refs <= 1) {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	125 removesToFire.add(removed);
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	126 refCounts.remove(removed);
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	127 } else {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	128 refCount = new Integer(refCount.intValue() - 1);
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	129 refCounts.put(removed, refCount);
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	130 }
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	131 }
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	132 }
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	133
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	134 // just in case the removes overlapped with the adds
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	135 addsToFire.removeAll(removesToFire);
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	136
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	137 if (addsToFire.size() > 0 \|\| removesToFire.size() > 0) {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	138 fireSetChange(Diffs.createSetDiff(addsToFire, removesToFire));
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	139 }
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	140 }
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	141
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	142 protected void firstListenerAdded() {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	143 super.firstListenerAdded();
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	144
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	145 refCounts = new HashMap();
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	146 for (int i = 0; i < childSets.length; i++) {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	147 IObservableSet next = childSets[i];
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	148 next.addSetChangeListener(childSetChangeListener);
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	149 incrementRefCounts(next);
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	150 }
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	151 stalenessTracker = new StalenessTracker(childSets, stalenessConsumer);
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	152 setWrappedSet(refCounts.keySet());
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	153 }
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	154
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	155 protected void lastListenerRemoved() {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	156 super.lastListenerRemoved();
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	157
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	158 for (int i = 0; i < childSets.length; i++) {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	159 IObservableSet next = childSets[i];
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	160
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	161 next.removeSetChangeListener(childSetChangeListener);
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	162 stalenessTracker.removeObservable(next);
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	163 }
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	164 refCounts = null;
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	165 stalenessTracker = null;
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	166 setWrappedSet(null);
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	167 }
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	168
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	169 private ArrayList incrementRefCounts(Collection added) {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	170 ArrayList adds = new ArrayList();
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	171
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	172 for (Iterator iter = added.iterator(); iter.hasNext();) {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	173 Object next = iter.next();
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	174
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	175 Integer refCount = cast(Integer) refCounts.get(next);
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	176 if (refCount is null) {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	177 adds.add(next);
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	178 refCount = new Integer(1);
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	179 refCounts.put(next, refCount);
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	180 } else {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	181 refCount = new Integer(refCount.intValue() + 1);
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	182 refCounts.put(next, refCount);
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	183 }
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	184 }
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	185 return adds;
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	186 }
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	187
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	188 protected void getterCalled() {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	189 super.getterCalled();
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	190 if (refCounts is null) {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	191 // no listeners, recompute
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	192 setWrappedSet(computeElements());
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	193 }
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	194 }
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	195
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	196 private Set computeElements() {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	197 // If there is no cached value, compute the union from scratch
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	198 if (refCounts is null) {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	199 Set result = new HashSet();
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	200 for (int i = 0; i < childSets.length; i++) {
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	201 result.addAll(childSets[i]);
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	202 }
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	203 return result;
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	204 }
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	205
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	206 // Else there is a cached value. Return it.
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	207 return refCounts.keySet();
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	208 }
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	209
6208d4f6a277 Added trees for databinding.beans and observable Frank Benoit <benoit@tionex.de> parents: diff changeset	210 }

95

6208d4f6a277 Added trees for databinding.beans and observable