| //------------------------------------------------------------------------------ |
| // Copyright (c) 2005, 2006 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 implementation |
| //------------------------------------------------------------------------------ |
| package org.eclipse.epf.authoring.ui.dialogs; |
| |
| import java.text.Collator; |
| import java.util.Arrays; |
| import java.util.Comparator; |
| |
| import org.eclipse.epf.uma.ContentPackage; |
| import org.eclipse.epf.uma.MethodPlugin; |
| import org.eclipse.jface.viewers.ContentViewer; |
| import org.eclipse.jface.viewers.IBaseLabelProvider; |
| import org.eclipse.jface.viewers.ILabelProvider; |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.jface.viewers.ViewerSorter; |
| |
| |
| |
| /** |
| * A {@link ItemsFilterDialog} dialog viewer sorter to order the display for certain element and packages. |
| * |
| * @author Shashidhar Kannoori |
| * @since 1.0 |
| */ |
| public class FilterSorter extends ViewerSorter { |
| |
| public FilterSorter() { |
| super(); |
| } |
| |
| public int category(Object element) { |
| if (element instanceof ContentPackage) |
| return 0; |
| else |
| return 1; |
| } |
| |
| /** |
| * @param collator |
| */ |
| public FilterSorter(Collator collator) { |
| super(collator); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * @see org.eclipse.jface.viewers.ViewerComparator#compare(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object) |
| */ |
| public int compare(Viewer viewer, Object e1, Object e2) { |
| |
| if (!(e1 instanceof ContentPackage) || !(e2 instanceof ContentPackage)) { |
| int cat1 = category(e1); |
| int cat2 = category(e2); |
| |
| if (cat1 != cat2) |
| return cat1 - cat2; |
| } |
| |
| if (e1 instanceof MethodPlugin && e2 instanceof MethodPlugin) { |
| return 0; |
| } |
| |
| String name1; |
| String name2; |
| |
| if (viewer == null || !(viewer instanceof ContentViewer)) { |
| name1 = e1.toString(); |
| name2 = e2.toString(); |
| } else { |
| IBaseLabelProvider prov = ((ContentViewer) viewer) |
| .getLabelProvider(); |
| if (prov instanceof ILabelProvider) { |
| ILabelProvider lprov = (ILabelProvider) prov; |
| name1 = lprov.getText(e1); |
| name2 = lprov.getText(e2); |
| } else { |
| name1 = e1.toString(); |
| name2 = e2.toString(); |
| } |
| } |
| if (name1 == null) |
| name1 = "";//$NON-NLS-1$ |
| if (name2 == null) |
| name2 = "";//$NON-NLS-1$ |
| return collator.compare(name1, name2); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * @see org.eclipse.jface.viewers.ViewerComparator#sort(org.eclipse.jface.viewers.Viewer, java.lang.Object[]) |
| */ |
| public void sort(final Viewer viewer, Object[] elements) { |
| Arrays.sort(elements, new Comparator() { |
| public int compare(Object a, Object b) { |
| return FilterSorter.this.compare(viewer, a, b); |
| } |
| }); |
| } |
| |
| } |