Mercurial > projects > dwt2
view org.eclipse.core.databinding/src/org/eclipse/core/databinding/observable/map/WritableMap.d @ 98:48d4ee626868
rm databinding.observable seems to be duplicate, databinding.beans now building
author | Frank Benoit <benoit@tionex.de> |
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date | Wed, 22 Apr 2009 07:30:21 +0200 |
parents | 6be48cf9f95c |
children |
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/******************************************************************************* * Copyright (c) 2006-2008 IBM Corporation and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * IBM Corporation - initial API and implementation * Brad Reynolds - bug 164653 * Matthew Hall - bug 184830 *******************************************************************************/ module org.eclipse.core.databinding.observable.map.WritableMap; import org.eclipse.core.databinding.observable.map.ObservableMap; import java.lang.all; import java.util.Collections; import java.util.HashMap; import java.util.HashSet; import java.util.Iterator; import java.util.Map; import java.util.Set; import org.eclipse.core.databinding.observable.Diffs; import org.eclipse.core.databinding.observable.Realm; import org.eclipse.core.internal.databinding.Util; /** * * <p> * This class is thread safe. All state accessing methods must be invoked from * the {@link Realm#isCurrent() current realm}. Methods for adding and removing * listeners may be invoked from any thread. * </p> * @since 1.0 */ public class WritableMap : ObservableMap { /** * Constructs a new WritableMap on the default realm. */ public this() { this(Realm.getDefault()); } /** * Constructs a new WritableMap on the given realm. * * @param realm * the realm */ public this(Realm realm) { super(realm, new HashMap()); } /** * Associates the provided <code>value</code> with the <code>key</code>. Must be invoked from the current realm. */ public Object put(Object key, Object value) { checkRealm(); Object result = wrappedMap.put(key, value); if (!Util.equals(result, value)) { if (result is null) { fireMapChange(Diffs.createMapDiffSingleAdd(key, value)); } else { fireMapChange(Diffs.createMapDiffSingleChange(key, result, value)); } } return result; } /** * Removes the value with the provide <code>key</code>. Must be invoked from the current realm. */ public Object remove(Object key) { checkRealm(); Object result = wrappedMap.remove(key); if (result !is null) { fireMapChange(Diffs.createMapDiffSingleRemove(key, result)); } return result; } /** * Clears the map. Must be invoked from the current realm. */ public void clear() { checkRealm(); if (!isEmpty()) { Map copy = new HashMap(wrappedMap); wrappedMap.clear(); fireMapChange(Diffs.createMapDiffRemoveAll(copy)); } } /** * Adds the provided <code>map</code>'s contents to this map. Must be invoked from the current realm. */ public void putAll(Map map) { checkRealm(); Set addedKeys = new HashSet(map.size()); Map changes = new HashMap(map.size()); for (Iterator it = map.entrySet().iterator(); it.hasNext();) { Map.Entry entry = cast(Entry) it.next(); Object previousValue = wrappedMap.put(entry.getKey(), entry.getValue()); if (previousValue is null) { addedKeys.add(entry.getKey()); } else { changes.put(entry.getKey(), previousValue); } } if (!addedKeys.isEmpty() || !changes.isEmpty()) { fireMapChange(Diffs.createMapDiff(addedKeys, Collections.EMPTY_SET, changes.keySet(), changes, wrappedMap)); } } }