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view org.eclipse.core.databinding/src/org/eclipse/core/internal/databinding/observable/masterdetail/DetailObservableList.d @ 125:c43718956f21 default tip
Updated the snippets status.
author | Jacob Carlborg <doob@me.com> |
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date | Thu, 11 Aug 2011 19:55:14 +0200 |
parents | 6be48cf9f95c |
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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 * Brad Reynolds - bug 147515 * Matthew Hall - bug 221351 *******************************************************************************/ module org.eclipse.core.internal.databinding.observable.masterdetail.DetailObservableList; import java.lang.all; import java.util.ArrayList; import java.util.Collection; import java.util.Collections; import java.util.List; import org.eclipse.core.databinding.observable.Diffs; import org.eclipse.core.databinding.observable.IObserving; import org.eclipse.core.databinding.observable.list.IListChangeListener; import org.eclipse.core.databinding.observable.list.IObservableList; import org.eclipse.core.databinding.observable.list.ListChangeEvent; import org.eclipse.core.databinding.observable.list.ObservableList; import org.eclipse.core.databinding.observable.masterdetail.IObservableFactory; 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 DetailObservableList : ObservableList , IObserving { private bool updating = false; private IListChangeListener innerChangeListener; class InnerChangeListener : IListChangeListener { public void handleListChange(ListChangeEvent event) { if (!updating) { fireListChange(event.diff); } } }; private Object currentOuterValue; private IObservableList innerObservableList; private IObservableFactory factory; private IObservableValue outerObservableValue; private Object detailType; /** * @param factory * @param outerObservableValue * @param detailType */ public this(IObservableFactory factory, IObservableValue outerObservableValue, Object detailType) { innerChangeListener = new InnerChangeListener(); super(outerObservableValue.getRealm(), Collections.EMPTY_LIST, detailType); this.factory = factory; this.outerObservableValue = outerObservableValue; this.detailType = detailType; updateInnerObservableList(outerObservableValue); outerObservableValue.addValueChangeListener(outerChangeListener); } IValueChangeListener outerChangeListener; class OuterChangeListener : IValueChangeListener { public void handleValueChange(ValueChangeEvent event) { List oldList = new ArrayList(wrappedList); updateInnerObservableList(outerObservableValue); fireListChange(Diffs.computeListDiff(oldList, wrappedList)); } }; private void updateInnerObservableList(IObservableValue outerObservableValue) { if (innerObservableList !is null) { innerObservableList.removeListChangeListener(innerChangeListener); innerObservableList.dispose(); } currentOuterValue = outerObservableValue.getValue(); if (currentOuterValue is null) { innerObservableList = null; wrappedList = Collections.EMPTY_LIST; } else { this.innerObservableList = cast(IObservableList) factory .createObservable(currentOuterValue); wrappedList = innerObservableList; if (detailType !is null) { Object innerValueType = innerObservableList.getElementType(); Assert.isTrue(cast(bool)getElementType().opEquals(innerValueType), "Cannot change value type in a nested observable list"); //$NON-NLS-1$ } innerObservableList.addListChangeListener(innerChangeListener); } } public bool add(Object o) { return wrappedList.add(o); } public void add(int index, Object element) { wrappedList.add(index, element); } public bool remove(Object o) { return wrappedList.remove(o); } public Object set(int index, Object element) { return wrappedList.set(index, element); } public Object move(int oldIndex, int newIndex) { if (innerObservableList !is null) return innerObservableList.move(oldIndex, newIndex); return super.move(oldIndex, newIndex); } public Object remove(int index) { return wrappedList.remove(index); } public bool addAll(Collection c) { return wrappedList.addAll(c); } public bool addAll(int index, Collection c) { return wrappedList.addAll(index, c); } public bool removeAll(Collection c) { return wrappedList.removeAll(c); } public bool retainAll(Collection c) { return wrappedList.retainAll(c); } public void clear() { wrappedList.clear(); } public void dispose() { super.dispose(); if (outerObservableValue !is null) { outerObservableValue.removeValueChangeListener(outerChangeListener); outerObservableValue.dispose(); } if (innerObservableList !is null) { innerObservableList.removeListChangeListener(innerChangeListener); innerObservableList.dispose(); } currentOuterValue = null; factory = null; innerObservableList = null; innerChangeListener = null; } public Object getObserved() { if ( null !is cast(IObserving)innerObservableList ) { return (cast(IObserving) innerObservableList).getObserved(); } return null; } }