| /******************************************************************************* |
| * Copyright (c) 2005, 2009 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 - bugs 164268, 171616, 147515 |
| * Matthew Hall - bug 221704, 234686, 246625, 226289, 246782, 194734, |
| * 195222, 247997 |
| * Thomas Kratz - bug 213787 |
| *******************************************************************************/ |
| package org.eclipse.core.databinding.beans; |
| |
| import java.beans.PropertyDescriptor; |
| |
| import org.eclipse.core.databinding.observable.IObservable; |
| import org.eclipse.core.databinding.observable.Realm; |
| import org.eclipse.core.databinding.observable.list.IObservableList; |
| import org.eclipse.core.databinding.observable.map.IObservableMap; |
| import org.eclipse.core.databinding.observable.masterdetail.IObservableFactory; |
| import org.eclipse.core.databinding.observable.masterdetail.MasterDetailObservables; |
| import org.eclipse.core.databinding.observable.set.IObservableSet; |
| import org.eclipse.core.databinding.observable.value.IObservableValue; |
| import org.eclipse.core.databinding.util.Policy; |
| import org.eclipse.core.internal.databinding.beans.BeanObservableListDecorator; |
| import org.eclipse.core.internal.databinding.beans.BeanObservableMapDecorator; |
| import org.eclipse.core.internal.databinding.beans.BeanObservableSetDecorator; |
| import org.eclipse.core.internal.databinding.beans.BeanObservableValueDecorator; |
| import org.eclipse.core.internal.databinding.beans.BeanPropertyHelper; |
| import org.eclipse.core.internal.databinding.beans.Util; |
| import org.eclipse.core.runtime.Assert; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| |
| /** |
| * A factory for creating observable objects of Java objects that conform to the |
| * <a href="http://java.sun.com/products/javabeans/docs/spec.html">JavaBean |
| * specification</a> for bound properties. |
| * |
| * @since 1.1 |
| * |
| */ |
| final public class BeansObservables { |
| |
| /** |
| * |
| */ |
| public static final boolean DEBUG = true; |
| |
| /** |
| * Returns an observable value in the default realm tracking the current |
| * value of the named property of the given bean. |
| * |
| * @param bean |
| * the object |
| * @param propertyName |
| * the name of the property. May be nested e.g. "parent.name" |
| * @return an observable value tracking the current value of the named |
| * property of the given bean |
| */ |
| public static IObservableValue observeValue(Object bean, String propertyName) { |
| return observeValue(Realm.getDefault(), bean, propertyName); |
| } |
| |
| /** |
| * Returns an observable value in the given realm tracking the current value |
| * of the named property of the given bean. |
| * |
| * @param realm |
| * the realm |
| * @param bean |
| * the object |
| * @param propertyName |
| * the name of the property. May be nested e.g. "parent.name" |
| * @return an observable value tracking the current value of the named |
| * property of the given bean |
| */ |
| public static IObservableValue observeValue(Realm realm, Object bean, |
| String propertyName) { |
| return BeanProperties.value(bean.getClass(), propertyName).observe( |
| realm, bean); |
| } |
| |
| /** |
| * Returns an observable map in the given observable set's realm tracking |
| * the current values of the named property for the beans in the given set. |
| * Elements in the set which do not have the named property will have null |
| * values, and attempts to {@link IObservableMap#put(Object, Object) put} |
| * values to these elements will be ignored. |
| * |
| * @param domain |
| * the set of bean objects |
| * @param propertyName |
| * the name of the property. May be nested e.g. "parent.name" |
| * @return an observable map tracking the current values of the named |
| * property for the beans in the given domain set |
| * @since 1.2 |
| */ |
| public static IObservableMap observeMap(IObservableSet domain, |
| String propertyName) { |
| return BeanProperties.value(propertyName).observeDetail(domain); |
| } |
| |
| /** |
| * Returns an observable map in the given observable set's realm tracking |
| * the current values of the named property for the beans in the given set. |
| * |
| * @param domain |
| * the set of bean objects |
| * @param beanClass |
| * the common base type of bean objects that may be in the set |
| * @param propertyName |
| * the name of the property. May be nested e.g. "parent.name" |
| * @return an observable map tracking the current values of the named |
| * property for the beans in the given domain set |
| */ |
| public static IObservableMap observeMap(IObservableSet domain, |
| Class beanClass, String propertyName) { |
| return BeanProperties.value(beanClass, propertyName).observeDetail( |
| domain); |
| } |
| |
| /** |
| * Returns an observable map in the given realm tracking the map-typed named |
| * property of the given bean object. |
| * |
| * @param realm |
| * the realm |
| * @param bean |
| * the bean object |
| * @param propertyName |
| * the name of the property. May be nested e.g. "parent.name" |
| * @return an observable map tracking the map-typed named property of the |
| * given bean object |
| * @since 1.1 |
| */ |
| public static IObservableMap observeMap(Realm realm, Object bean, |
| String propertyName) { |
| return observeMap(realm, bean, propertyName, null, null); |
| } |
| |
| /** |
| * Returns an observable map in the given realm tracking the map-typed named |
| * property of the given bean object. |
| * |
| * @param realm |
| * the realm |
| * @param bean |
| * the bean object |
| * @param propertyName |
| * the name of the property. May be nested e.g. "parent.name" |
| * @param keyType |
| * the element type of the observable map's key set, or |
| * <code>null</code> if untyped |
| * @param valueType |
| * the element type of the observable map's values collection, or |
| * <code>null</code> if untyped |
| * @return an observable map tracking the map-typed named property of the |
| * given bean object |
| * @since 1.2 |
| */ |
| public static IObservableMap observeMap(Realm realm, Object bean, |
| String propertyName, Class keyType, Class valueType) { |
| return BeanProperties.map(bean.getClass(), propertyName, keyType, |
| valueType).observe(realm, bean); |
| } |
| |
| /** |
| * Returns an observable map in the default realm tracking the map-typed |
| * named property of the given bean object. |
| * |
| * @param bean |
| * the bean object |
| * @param propertyName |
| * the name of the property. May be nested e.g. "parent.name" |
| * @return an observable map tracking the map-typed named property of the |
| * given bean object |
| * @since 1.2 |
| */ |
| public static IObservableMap observeMap(Object bean, String propertyName) { |
| return observeMap(Realm.getDefault(), bean, propertyName, null, null); |
| } |
| |
| /** |
| * Returns an observable map in the default realm tracking the map-typed |
| * named property of the given bean object. |
| * |
| * @param bean |
| * the bean object |
| * @param propertyName |
| * the name of the property |
| * @param keyType |
| * the element type of the observable map's key set, or |
| * <code>null</code> if untyped |
| * @param valueType |
| * the element type of the observable map's values collection, or |
| * <code>null</code> if untyped |
| * @return an observable map tracking the map-typed named property of the |
| * given bean object |
| * @since 1.2 |
| */ |
| public static IObservableMap observeMap(Object bean, String propertyName, |
| Class keyType, Class valueType) { |
| return observeMap(Realm.getDefault(), bean, propertyName, keyType, |
| valueType); |
| } |
| |
| /** |
| * Returns an array of observable maps in the given observable set's realm |
| * tracking the current values of the named properties for the beans in the |
| * given set. Elements in the set which do not have the named property will |
| * have null values, and attempts to |
| * {@link IObservableMap#put(Object, Object) put} values to these elements |
| * will be ignored. |
| * |
| * @param domain |
| * the set of objects |
| * @param propertyNames |
| * the array of property names. May be nested e.g. "parent.name" |
| * @return an array of observable maps tracking the current values of the |
| * named propertys for the beans in the given domain set |
| * @since 1.2 |
| */ |
| public static IObservableMap[] observeMaps(IObservableSet domain, |
| String[] propertyNames) { |
| IObservableMap[] result = new IObservableMap[propertyNames.length]; |
| for (int i = 0; i < propertyNames.length; i++) { |
| result[i] = observeMap(domain, propertyNames[i]); |
| } |
| return result; |
| } |
| |
| /** |
| * Returns an array of observable maps in the given observable set's realm |
| * tracking the current values of the named properties for the beans in the |
| * given set. |
| * |
| * @param domain |
| * the set of objects |
| * @param beanClass |
| * the common base type of objects that may be in the set |
| * @param propertyNames |
| * the array of property names. May be nested e.g. "parent.name" |
| * @return an array of observable maps tracking the current values of the |
| * named propertys for the beans in the given domain set |
| */ |
| public static IObservableMap[] observeMaps(IObservableSet domain, |
| Class beanClass, String[] propertyNames) { |
| IObservableMap[] result = new IObservableMap[propertyNames.length]; |
| for (int i = 0; i < propertyNames.length; i++) { |
| result[i] = observeMap(domain, beanClass, propertyNames[i]); |
| } |
| return result; |
| } |
| |
| /** |
| * Returns an observable list in the given realm tracking the |
| * collection-typed named property of the given bean object. The returned |
| * list is mutable. |
| * |
| * @param realm |
| * the realm |
| * @param bean |
| * the object |
| * @param propertyName |
| * the name of the collection-typed property |
| * @return an observable list tracking the collection-typed named property |
| * of the given bean object |
| * @see #observeList(Realm, Object, String, Class) |
| */ |
| public static IObservableList observeList(Realm realm, Object bean, |
| String propertyName) { |
| return observeList(realm, bean, propertyName, null); |
| } |
| |
| /** |
| * Returns an observable list in the default realm tracking the |
| * collection-typed named property of the given bean object. The returned |
| * list is mutable. |
| * |
| * @param bean |
| * the object |
| * @param propertyName |
| * the name of the collection-typed property |
| * @return an observable list tracking the collection-typed named property |
| * of the given bean object |
| * @see #observeList(Realm, Object, String, Class) |
| * @since 1.2 |
| */ |
| public static IObservableList observeList(Object bean, String propertyName) { |
| return observeList(Realm.getDefault(), bean, propertyName); |
| } |
| |
| /** |
| * Returns an observable list in the given realm tracking the |
| * collection-typed named property of the given bean object. The returned |
| * list is mutable. When an item is added or removed the setter is invoked |
| * for the list on the parent bean to provide notification to other |
| * listeners via <code>PropertyChangeEvents</code>. This is done to provide |
| * the same behavior as is expected from arrays as specified in the bean |
| * spec in section 7.2. |
| * |
| * @param realm |
| * the realm |
| * @param bean |
| * the bean object |
| * @param propertyName |
| * the name of the property |
| * @param elementType |
| * type of the elements in the list. If <code>null</code> and the |
| * property is an array the type will be inferred. If |
| * <code>null</code> and the property type cannot be inferred |
| * element type will be <code>null</code>. |
| * @return an observable list tracking the collection-typed named property |
| * of the given bean object |
| */ |
| public static IObservableList observeList(Realm realm, Object bean, |
| String propertyName, Class elementType) { |
| return BeanProperties.list(bean.getClass(), propertyName, elementType) |
| .observe(realm, bean); |
| } |
| |
| /** |
| * Returns an observable list in the default realm tracking the |
| * collection-typed named property of the given bean object. The returned |
| * list is mutable. When an item is added or removed the setter is invoked |
| * for the list on the parent bean to provide notification to other |
| * listeners via <code>PropertyChangeEvents</code>. This is done to provide |
| * the same behavior as is expected from arrays as specified in the bean |
| * spec in section 7.2. |
| * |
| * @param bean |
| * the bean object |
| * @param propertyName |
| * the name of the property |
| * @param elementType |
| * type of the elements in the list. If <code>null</code> and the |
| * property is an array the type will be inferred. If |
| * <code>null</code> and the property type cannot be inferred |
| * element type will be <code>null</code>. |
| * @return an observable list tracking the collection-typed named property |
| * of the given bean object |
| * @since 1.2 |
| */ |
| public static IObservableList observeList(Object bean, String propertyName, |
| Class elementType) { |
| return observeList(Realm.getDefault(), bean, propertyName, elementType); |
| } |
| |
| /** |
| * Returns an observable set in the given realm tracking the |
| * collection-typed named property of the given bean object |
| * |
| * @param realm |
| * the realm |
| * @param bean |
| * the bean object |
| * @param propertyName |
| * the name of the property |
| * @return an observable set tracking the collection-typed named property of |
| * the given bean object |
| */ |
| public static IObservableSet observeSet(Realm realm, Object bean, |
| String propertyName) { |
| return observeSet(realm, bean, propertyName, null); |
| } |
| |
| /** |
| * Returns an observable set in the default realm tracking the |
| * collection-typed named property of the given bean object |
| * |
| * @param bean |
| * the bean object |
| * @param propertyName |
| * the name of the property |
| * @return an observable set tracking the collection-typed named property of |
| * the given bean object |
| * @since 1.2 |
| */ |
| public static IObservableSet observeSet(Object bean, String propertyName) { |
| return observeSet(Realm.getDefault(), bean, propertyName); |
| } |
| |
| /** |
| * Returns a factory for creating observable values in the given realm, |
| * tracking the given property of a particular bean object |
| * |
| * @param realm |
| * the realm to use |
| * @param propertyName |
| * the name of the property. May be nested e.g. "parent.name" |
| * @return an observable value factory |
| */ |
| public static IObservableFactory valueFactory(final Realm realm, |
| final String propertyName) { |
| return BeanProperties.value(propertyName).valueFactory(realm); |
| } |
| |
| /** |
| * Returns a factory for creating observable values in the current default |
| * realm, tracking the given property of a particular bean object |
| * |
| * @param propertyName |
| * the name of the property. May be nested e.g. "parent.name" |
| * @return an observable value factory |
| * @since 1.2 |
| */ |
| public static IObservableFactory valueFactory(String propertyName) { |
| return valueFactory(Realm.getDefault(), propertyName); |
| } |
| |
| /** |
| * Returns a factory for creating observable lists in the given realm, |
| * tracking the given property of a particular bean object |
| * |
| * @param realm |
| * the realm to use |
| * @param propertyName |
| * the name of the property |
| * @param elementType |
| * @return an observable list factory |
| */ |
| public static IObservableFactory listFactory(final Realm realm, |
| final String propertyName, final Class elementType) { |
| return BeanProperties.list(propertyName, elementType) |
| .listFactory(realm); |
| } |
| |
| /** |
| * Returns a factory for creating observable lists in the current default |
| * realm, tracking the given property of a particular bean object |
| * |
| * @param propertyName |
| * the name of the property |
| * @param elementType |
| * @return an observable list factory |
| * @since 1.2 |
| */ |
| public static IObservableFactory listFactory(String propertyName, |
| Class elementType) { |
| return listFactory(Realm.getDefault(), propertyName, elementType); |
| } |
| |
| /** |
| * Returns a factory for creating observable sets in the given realm, |
| * tracking the given property of a particular bean object |
| * |
| * @param realm |
| * the realm to use |
| * @param propertyName |
| * the name of the property |
| * @return an observable set factory |
| */ |
| public static IObservableFactory setFactory(final Realm realm, |
| final String propertyName) { |
| return BeanProperties.set(propertyName).setFactory(realm); |
| } |
| |
| /** |
| * Returns a factory for creating observable sets in the current default |
| * realm, tracking the given property of a particular bean object |
| * |
| * @param propertyName |
| * the name of the property |
| * @return an observable set factory |
| * @since 1.2 |
| */ |
| public static IObservableFactory setFactory(String propertyName) { |
| return setFactory(Realm.getDefault(), propertyName); |
| } |
| |
| /** |
| * Helper method for |
| * <code>MasterDetailObservables.detailValue(master, valueFactory(realm, |
| propertyName), propertyType)</code> |
| * |
| * @param realm |
| * @param master |
| * @param propertyName |
| * the name of the property. May be nested e.g. "parent.name" |
| * @param propertyType |
| * can be <code>null</code> |
| * @return an observable value that tracks the current value of the named |
| * property for the current value of the master observable value |
| * |
| * @see MasterDetailObservables |
| * @deprecated Use |
| * {@link #observeDetailValue(IObservableValue, String, Class)} |
| * instead |
| */ |
| public static IObservableValue observeDetailValue(Realm realm, |
| IObservableValue master, String propertyName, Class propertyType) { |
| warnIfDifferentRealms(realm, master.getRealm()); |
| |
| IObservableValue value = MasterDetailObservables.detailValue(master, |
| BeanProperties.value(propertyName, propertyType).valueFactory( |
| realm), propertyType); |
| return new BeanObservableValueDecorator(value, BeanPropertyHelper |
| .getValueTypePropertyDescriptor(master, propertyName)); |
| } |
| |
| /* package */static void warnIfDifferentRealms(Realm detailRealm, |
| Realm masterRealm) { |
| if (!Util.equals(detailRealm, masterRealm)) { |
| Throwable throwable = new Throwable(); |
| throwable.fillInStackTrace(); |
| String message = "Detail realm (" + detailRealm //$NON-NLS-1$ |
| + ") not equal to master realm (" //$NON-NLS-1$ |
| + masterRealm + ")"; //$NON-NLS-1$ |
| Policy.getLog().log( |
| new Status(IStatus.WARNING, Policy.JFACE_DATABINDING, |
| message, throwable)); |
| } |
| } |
| |
| /** |
| * Helper method for |
| * <code>MasterDetailObservables.detailValue(master, valueFactory(master.getRealm(), propertyName), propertyType)</code> |
| * |
| * @param master |
| * @param propertyName |
| * the name of the property. May be nested e.g. "parent.name" |
| * @param propertyType |
| * can be <code>null</code> |
| * @return an observable value that tracks the current value of the named |
| * property for the current value of the master observable value |
| * |
| * @see MasterDetailObservables |
| * @since 1.2 |
| */ |
| public static IObservableValue observeDetailValue(IObservableValue master, |
| String propertyName, Class propertyType) { |
| Class beanClass = null; |
| if (master.getValueType() instanceof Class) |
| beanClass = (Class) master.getValueType(); |
| return observeDetailValue(master, beanClass, propertyName, propertyType); |
| } |
| |
| /** |
| * Helper method for |
| * <code>MasterDetailObservables.detailValue(master, valueFactory(realm, |
| * propertyName), propertyType)</code>. This method returns an |
| * {@link IBeanObservable} with a {@link PropertyDescriptor} based on the |
| * given master type and property name. |
| * |
| * @param realm |
| * the realm |
| * @param master |
| * the master observable value, for example tracking the |
| * selection in a list |
| * @param masterType |
| * the type of the master observable value |
| * @param propertyName |
| * the property name. May be nested e.g. "parent.name" |
| * @param propertyType |
| * can be <code>null</code> |
| * @return an observable value that tracks the current value of the named |
| * property for the current value of the master observable value |
| * |
| * @see MasterDetailObservables |
| * @since 1.1 |
| * @deprecated Use |
| * {@link #observeDetailValue(IObservableValue, Class, String, Class)} |
| * instead. |
| */ |
| public static IObservableValue observeDetailValue(Realm realm, |
| IObservableValue master, Class masterType, String propertyName, |
| Class propertyType) { |
| warnIfDifferentRealms(realm, master.getRealm()); |
| Assert.isNotNull(masterType, "masterType cannot be null"); //$NON-NLS-1$ |
| IObservableValue value = MasterDetailObservables.detailValue(master, |
| BeanProperties.value(masterType, propertyName, propertyType) |
| .valueFactory(realm), propertyType); |
| return new BeanObservableValueDecorator(value, BeanPropertyHelper |
| .getPropertyDescriptor(masterType, propertyName)); |
| } |
| |
| /** |
| * Helper method for |
| * <code>MasterDetailObservables.detailValue(master, valueFactory(master.getRealm(), propertyName), propertyType)</code> |
| * . This method returns an {@link IBeanObservable} with a |
| * {@link PropertyDescriptor} based on the given master type and property |
| * name. |
| * |
| * @param master |
| * the master observable value, for example tracking the |
| * selection in a list |
| * @param masterType |
| * the type of the master observable value |
| * @param propertyName |
| * the property name. May be nested e.g. "parent.name" |
| * @param propertyType |
| * can be <code>null</code> |
| * @return an observable value that tracks the current value of the named |
| * property for the current value of the master observable value |
| * |
| * @see MasterDetailObservables |
| * @since 1.2 |
| */ |
| public static IObservableValue observeDetailValue(IObservableValue master, |
| Class masterType, String propertyName, Class propertyType) { |
| return BeanProperties.value(masterType, propertyName, propertyType) |
| .observeDetail(master); |
| } |
| |
| /** |
| * Helper method for |
| * <code>MasterDetailObservables.detailList(master, listFactory(realm, |
| propertyName, propertyType), propertyType)</code> |
| * |
| * @param realm |
| * @param master |
| * @param propertyName |
| * @param propertyType |
| * can be <code>null</code> |
| * @return an observable list that tracks the named property for the current |
| * value of the master observable value |
| * |
| * @see MasterDetailObservables |
| * @deprecated Use |
| * {@link #observeDetailList(IObservableValue, String, Class)} |
| * instead |
| */ |
| public static IObservableList observeDetailList(Realm realm, |
| IObservableValue master, String propertyName, Class propertyType) { |
| warnIfDifferentRealms(realm, master.getRealm()); |
| IObservableList observableList = MasterDetailObservables.detailList( |
| master, BeanProperties.list(propertyName, propertyType) |
| .listFactory(realm), propertyType); |
| return new BeanObservableListDecorator(observableList, |
| BeanPropertyHelper.getValueTypePropertyDescriptor(master, |
| propertyName)); |
| } |
| |
| /** |
| * Helper method for |
| * <code>MasterDetailObservables.detailList(master, listFactory(master.getRealm(), propertyName, propertyType), propertyType)</code> |
| * |
| * @param master |
| * @param propertyName |
| * @param propertyType |
| * can be <code>null</code> |
| * @return an observable list that tracks the named property for the current |
| * value of the master observable value |
| * |
| * @see MasterDetailObservables |
| * @since 1.2 |
| */ |
| public static IObservableList observeDetailList(IObservableValue master, |
| String propertyName, Class propertyType) { |
| Class beanClass = null; |
| if (master.getValueType() instanceof Class) |
| beanClass = (Class) master.getValueType(); |
| return BeanProperties.list(beanClass, propertyName, propertyType) |
| .observeDetail(master); |
| } |
| |
| /** |
| * Helper method for |
| * <code>MasterDetailObservables.detailSet(master, setFactory(realm, |
| propertyName), propertyType)</code> |
| * |
| * @param realm |
| * @param master |
| * @param propertyName |
| * @param propertyType |
| * can be <code>null</code> |
| * @return an observable set that tracks the named property for the current |
| * value of the master observable value |
| * |
| * @see MasterDetailObservables |
| * @deprecated Use |
| * {@link #observeDetailSet(IObservableValue, String, Class)} |
| * instead. |
| */ |
| public static IObservableSet observeDetailSet(Realm realm, |
| IObservableValue master, String propertyName, Class propertyType) { |
| warnIfDifferentRealms(realm, master.getRealm()); |
| |
| IObservableSet observableSet = MasterDetailObservables.detailSet( |
| master, BeanProperties.set(propertyName, propertyType) |
| .setFactory(realm), propertyType); |
| return new BeanObservableSetDecorator(observableSet, BeanPropertyHelper |
| .getValueTypePropertyDescriptor(master, propertyName)); |
| } |
| |
| /** |
| * Helper method for |
| * <code>MasterDetailObservables.detailSet(master, setFactory(master.getRealm(), propertyName), propertyType)</code> |
| * |
| * @param master |
| * @param propertyName |
| * @param propertyType |
| * can be <code>null</code> |
| * @return an observable set that tracks the named property for the current |
| * value of the master observable value |
| * |
| * @see MasterDetailObservables |
| * @since 1.2 |
| */ |
| public static IObservableSet observeDetailSet(IObservableValue master, |
| String propertyName, Class propertyType) { |
| Class beanClass = null; |
| if (master.getValueType() instanceof Class) |
| beanClass = (Class) master.getValueType(); |
| return BeanProperties.set(beanClass, propertyName, propertyType) |
| .observeDetail(master); |
| } |
| |
| /** |
| * Helper method for |
| * <code>MasterDetailObservables.detailMap(master, mapFactory(realm, propertyName))</code> |
| * |
| * @param realm |
| * the realm |
| * @param master |
| * @param propertyName |
| * @return an observable map that tracks the map-type named property for the |
| * current value of the master observable value. |
| * @since 1.1 |
| * @deprecated Use {@link #observeDetailMap(IObservableValue, String)} |
| * instead |
| */ |
| public static IObservableMap observeDetailMap(Realm realm, |
| IObservableValue master, String propertyName) { |
| warnIfDifferentRealms(realm, master.getRealm()); |
| IObservableMap observableMap = MasterDetailObservables.detailMap( |
| master, BeanProperties.map(propertyName).mapFactory(realm)); |
| return new BeanObservableMapDecorator(observableMap, BeanPropertyHelper |
| .getValueTypePropertyDescriptor(master, propertyName)); |
| } |
| |
| /** |
| * Helper method for |
| * <code>MasterDetailObservables.detailMap(master, mapFactory(master.getRealm(), propertyName))</code> |
| * |
| * @param master |
| * @param propertyName |
| * @return an observable map that tracks the map-type named property for the |
| * current value of the master observable value. |
| * @since 1.2 |
| */ |
| public static IObservableMap observeDetailMap(IObservableValue master, |
| String propertyName) { |
| Class beanClass = null; |
| if (master.getValueType() instanceof Class) |
| beanClass = (Class) master.getValueType(); |
| return BeanProperties.map(beanClass, propertyName) |
| .observeDetail(master); |
| } |
| |
| /** |
| * Returns an observable set in the given realm tracking the |
| * collection-typed named property of the given bean object. The returned |
| * set is mutable. When an item is added or removed the setter is invoked |
| * for the set on the parent bean to provide notification to other listeners |
| * via <code>PropertyChangeEvents</code>. This is done to provide the same |
| * behavior as is expected from arrays as specified in the bean spec in |
| * section 7.2. |
| * |
| * @param realm |
| * the realm |
| * @param bean |
| * the bean object |
| * @param propertyName |
| * the name of the property |
| * @param elementType |
| * type of the elements in the set. If <code>null</code> and the |
| * property is an array the type will be inferred. If |
| * <code>null</code> and the property type cannot be inferred |
| * element type will be <code>null</code>. |
| * @return an observable set tracking the collection-typed named property of |
| * the given bean object |
| */ |
| public static IObservableSet observeSet(Realm realm, Object bean, |
| String propertyName, Class elementType) { |
| return BeanProperties.set(bean.getClass(), propertyName, elementType) |
| .observe(realm, bean); |
| } |
| |
| /** |
| * Returns an observable set in the current default realm tracking the |
| * collection-typed named property of the given bean object. The returned |
| * set is mutable. When an item is added or removed the setter is invoked |
| * for the set on the parent bean to provide notification to other listeners |
| * via <code>PropertyChangeEvents</code>. This is done to provide the same |
| * behavior as is expected from arrays as specified in the bean spec in |
| * section 7.2. |
| * |
| * @param bean |
| * the bean object |
| * @param propertyName |
| * the name of the property |
| * @param elementType |
| * type of the elements in the set. If <code>null</code> and the |
| * property is an array the type will be inferred. If |
| * <code>null</code> and the property type cannot be inferred |
| * element type will be <code>null</code>. |
| * @return an observable set tracking the collection-typed named property of |
| * the given bean object |
| * @since 1.2 |
| */ |
| public static IObservableSet observeSet(Object bean, String propertyName, |
| Class elementType) { |
| return observeSet(Realm.getDefault(), bean, propertyName, elementType); |
| } |
| |
| /** |
| * Returns a factory for creating observable sets in the given realm, |
| * tracking the given property of a particular bean object |
| * |
| * @param realm |
| * the realm to use |
| * @param propertyName |
| * the name of the property |
| * @param elementType |
| * type of the elements in the set. If <code>null</code> and the |
| * property is an array the type will be inferred. If |
| * <code>null</code> and the property type cannot be inferred |
| * element type will be <code>null</code>. |
| * @return a factory for creating observable sets in the given realm, |
| * tracking the given property of a particular bean object |
| */ |
| public static IObservableFactory setFactory(final Realm realm, |
| final String propertyName, final Class elementType) { |
| return BeanProperties.set(propertyName, elementType).setFactory(realm); |
| } |
| |
| /** |
| * Returns a factory for creating observable sets in the current default |
| * realm, tracking the given property of a particular bean object |
| * |
| * @param propertyName |
| * the name of the property |
| * @param elementType |
| * type of the elements in the set. If <code>null</code> and the |
| * property is an array the type will be inferred. If |
| * <code>null</code> and the property type cannot be inferred |
| * element type will be <code>null</code>. |
| * @return a factory for creating observable sets in the given realm, |
| * tracking the given property of a particular bean object |
| * @since 1.2 |
| */ |
| public static IObservableFactory setFactory(String propertyName, |
| Class elementType) { |
| return setFactory(Realm.getDefault(), propertyName, elementType); |
| } |
| |
| /** |
| * Returns a factory for creating an observable map. The factory, when |
| * provided with an {@link IObservableSet}, will create an |
| * {@link IObservableMap} in the same realm as the underlying set that |
| * tracks the current values of the named property for the beans in the |
| * given set. |
| * |
| * @param beanClass |
| * the common base type of bean objects that may be in the set |
| * @param propertyName |
| * the name of the property. May be nested e.g. "parent.name" |
| * @return a factory for creating {@link IObservableMap} objects |
| * |
| * @since 1.1 |
| */ |
| public static IObservableFactory setToMapFactory(final Class beanClass, |
| final String propertyName) { |
| return new IObservableFactory() { |
| public IObservable createObservable(Object target) { |
| return observeMap((IObservableSet) target, beanClass, |
| propertyName); |
| } |
| }; |
| } |
| |
| /** |
| * Returns a factory for creating an observable map. The factory, when |
| * provided with a bean object, will create an {@link IObservableMap} in the |
| * given realm that tracks the map-typed named property for the specified |
| * bean. |
| * |
| * @param realm |
| * the realm assigned to observables created by the returned |
| * factory. |
| * @param propertyName |
| * the name of the property |
| * @return a factory for creating {@link IObservableMap} objects. |
| * @since 1.1 |
| */ |
| public static IObservableFactory mapPropertyFactory(final Realm realm, |
| final String propertyName) { |
| return BeanProperties.map(propertyName).mapFactory(realm); |
| } |
| |
| /** |
| * Returns a factory for creating an observable map. The factory, when |
| * provided with a bean object, will create an {@link IObservableMap} in the |
| * current default realm that tracks the map-typed named property for the |
| * specified bean. |
| * |
| * @param propertyName |
| * the name of the property |
| * @return a factory for creating {@link IObservableMap} objects. |
| * @since 1.2 |
| */ |
| public static IObservableFactory mapPropertyFactory(String propertyName) { |
| return mapPropertyFactory(Realm.getDefault(), propertyName); |
| } |
| } |