Mercurial > projects > dwt2
view org.eclipse.core.databinding.observable/src/org/eclipse/core/internal/databinding/observable/masterdetail/DetailObservableSet.d @ 96:b74ac5dfcc06
package to module and java.lang.all import
author | Frank Benoit <benoit@tionex.de> |
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date | Tue, 21 Apr 2009 11:03:33 +0200 |
parents | 6208d4f6a277 |
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/******************************************************************************* * Copyright (c) 2005-2008 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 * Matthew Hall - bug 221351 *******************************************************************************/ module org.eclipse.core.internal.databinding.observable.masterdetail.DetailObservableSet; import java.lang.all; import java.util.Collection; import java.util.Collections; import java.util.HashSet; import java.util.Set; import org.eclipse.core.databinding.observable.Diffs; import org.eclipse.core.databinding.observable.IObserving; import org.eclipse.core.databinding.observable.masterdetail.IObservableFactory; import org.eclipse.core.databinding.observable.set.IObservableSet; import org.eclipse.core.databinding.observable.set.ISetChangeListener; import org.eclipse.core.databinding.observable.set.ObservableSet; import org.eclipse.core.databinding.observable.set.SetChangeEvent; import org.eclipse.core.databinding.observable.value.IObservableValue; import org.eclipse.core.databinding.observable.value.IValueChangeListener; import org.eclipse.core.databinding.observable.value.ValueChangeEvent; import org.eclipse.core.runtime.Assert; /** * @since 3.2 * */ public class DetailObservableSet : ObservableSet , IObserving { private bool updating = false; private ISetChangeListener innerChangeListener = new class() ISetChangeListener { public void handleSetChange(SetChangeEvent event) { if (!updating) { fireSetChange(event.diff); } } }; private Object currentOuterValue; private IObservableSet innerObservableSet; private IObservableValue outerObservableValue; private IObservableFactory factory; /** * @param factory * @param outerObservableValue * @param detailType */ public this(IObservableFactory factory, IObservableValue outerObservableValue, Object detailType) { super(outerObservableValue.getRealm(), Collections.EMPTY_SET, detailType); this.factory = factory; this.outerObservableValue = outerObservableValue; updateInnerObservableSet(outerObservableValue); outerObservableValue.addValueChangeListener(outerChangeListener); } IValueChangeListener outerChangeListener = new class() IValueChangeListener { public void handleValueChange(ValueChangeEvent event) { Set oldSet = new HashSet(wrappedSet); updateInnerObservableSet(outerObservableValue); fireSetChange(Diffs.computeSetDiff(oldSet, wrappedSet)); } }; private void updateInnerObservableSet(IObservableValue outerObservableValue) { currentOuterValue = outerObservableValue.getValue(); if (innerObservableSet !is null) { innerObservableSet.removeSetChangeListener(innerChangeListener); innerObservableSet.dispose(); } if (currentOuterValue is null) { innerObservableSet = null; wrappedSet = Collections.EMPTY_SET; } else { this.innerObservableSet = cast(IObservableSet) factory .createObservable(currentOuterValue); wrappedSet = innerObservableSet; if (elementType !is null) { Object innerValueType = innerObservableSet.getElementType(); Assert.isTrue(elementType.equals(innerValueType), "Cannot change value type in a nested observable set"); //$NON-NLS-1$ } innerObservableSet.addSetChangeListener(innerChangeListener); } } public bool add(Object o) { getterCalled(); return wrappedSet.add(o); } public bool remove(Object o) { getterCalled(); return wrappedSet.remove(o); } public bool addAll(Collection c) { getterCalled(); return wrappedSet.addAll(c); } public bool removeAll(Collection c) { getterCalled(); return wrappedSet.removeAll(c); } public bool retainAll(Collection c) { getterCalled(); return wrappedSet.retainAll(c); } public void clear() { getterCalled(); wrappedSet.clear(); } public void dispose() { super.dispose(); if (outerObservableValue !is null) { outerObservableValue.removeValueChangeListener(outerChangeListener); outerObservableValue.dispose(); } if (innerObservableSet !is null) { innerObservableSet.removeSetChangeListener(innerChangeListener); innerObservableSet.dispose(); } currentOuterValue = null; factory = null; innerObservableSet = null; innerChangeListener = null; } public Object getObserved() { if ( null !is cast(IObserving)innerObservableSet ) { return (cast(IObserving) innerObservableSet).getObserved(); } return null; } }