| /******************************************************************************* |
| * Copyright (c) 2008, 2010 Matthew Hall 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: |
| * Matthew Hall - initial API and implementation (bug 194734) |
| * Matthew Hall - bugs 195222, 264307, 265561, 301774 |
| ******************************************************************************/ |
| |
| package org.eclipse.core.internal.databinding.beans; |
| |
| import java.beans.PropertyDescriptor; |
| import java.util.Collections; |
| import java.util.Map; |
| |
| import org.eclipse.core.databinding.observable.Diffs; |
| import org.eclipse.core.databinding.observable.map.MapDiff; |
| import org.eclipse.core.databinding.property.INativePropertyListener; |
| import org.eclipse.core.databinding.property.ISimplePropertyListener; |
| import org.eclipse.core.databinding.property.map.SimpleMapProperty; |
| |
| /** |
| * @param <S> |
| * @param <K> |
| * @param <V> |
| * @since 3.3 |
| * |
| */ |
| public class BeanMapProperty<S, K, V> extends SimpleMapProperty<S, K, V> { |
| private final PropertyDescriptor propertyDescriptor; |
| private final Class<K> keyType; |
| private final Class<V> valueType; |
| |
| /** |
| * @param propertyDescriptor |
| * @param keyType |
| * @param valueType |
| */ |
| public BeanMapProperty(PropertyDescriptor propertyDescriptor, |
| Class<K> keyType, Class<V> valueType) { |
| this.propertyDescriptor = propertyDescriptor; |
| this.keyType = keyType; |
| this.valueType = valueType; |
| } |
| |
| public Object getKeyType() { |
| return keyType; |
| } |
| |
| public Object getValueType() { |
| return valueType; |
| } |
| |
| public Class<K> getKeyClass() { |
| return keyType; |
| } |
| |
| public Class<V> getValueClass() { |
| return valueType; |
| } |
| |
| protected Map<K, V> doGetMap(S source) { |
| return (Map<K, V>) asMap(BeanPropertyHelper.readProperty(source, |
| propertyDescriptor)); |
| } |
| |
| private Map<?, ?> asMap(Object propertyValue) { |
| if (propertyValue == null) |
| return Collections.emptyMap(); |
| return (Map<?, ?>) propertyValue; |
| } |
| |
| protected void doSetMap(S source, Map<K, V> map, MapDiff<K, V> diff) { |
| doSetMap(source, map); |
| } |
| |
| protected void doSetMap(S source, Map<K, V> map) { |
| BeanPropertyHelper.writeProperty(source, propertyDescriptor, map); |
| } |
| |
| public INativePropertyListener<S> adaptListener( |
| final ISimplePropertyListener<MapDiff<K, V>> listener) { |
| return new BeanPropertyListener<S, MapDiff<K, V>>(this, |
| propertyDescriptor, listener) { |
| protected MapDiff<K, V> computeDiff(Object oldValue, Object newValue) { |
| return Diffs.computeAndCastMapDiff(asMap(oldValue), |
| asMap(newValue), keyType, valueType); |
| } |
| }; |
| } |
| |
| public String toString() { |
| String s = BeanPropertyHelper.propertyName(propertyDescriptor) + "{:}"; //$NON-NLS-1$ |
| |
| if (keyType != null || valueType != null) |
| s += "<" + BeanPropertyHelper.shortClassName(keyType) + ", " //$NON-NLS-1$ //$NON-NLS-2$ |
| + BeanPropertyHelper.shortClassName(valueType) + ">"; //$NON-NLS-1$ |
| return s; |
| } |
| } |