| //------------------------------------------------------------------------------ |
| // 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.properties; |
| |
| import java.util.Iterator; |
| |
| import org.eclipse.emf.edit.ui.provider.AdapterFactoryLabelProvider; |
| import org.eclipse.epf.library.edit.util.TngUtil; |
| import org.eclipse.epf.library.ui.LibraryUIImages; |
| import org.eclipse.epf.library.util.LibraryUtil; |
| import org.eclipse.epf.uma.BreakdownElement; |
| import org.eclipse.jface.util.Assert; |
| import org.eclipse.jface.viewers.ILabelProvider; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.jface.viewers.LabelProvider; |
| import org.eclipse.jface.viewers.StructuredSelection; |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.ui.views.properties.tabbed.ITypeMapper; |
| |
| |
| /** |
| * Label provider for the title bar for the tabbed property sheet page. |
| * |
| * @author Shilpa Toraskar |
| * @since 1.0 |
| */ |
| public class ElementLabelProvider extends LabelProvider { |
| |
| private ITypeMapper typeMapper; |
| |
| private ILabelProvider labelProvider = null; |
| |
| /** |
| * Create an instance |
| */ |
| public ElementLabelProvider() { |
| super(); |
| typeMapper = new ElementTypeMapper(); |
| } |
| |
| |
| /** |
| * @see org.eclipse.jface.viewers.LabelProvider#getImage(java.lang.Object) |
| */ |
| public Image getImage(Object objects) { |
| if (objects == null || objects.equals(StructuredSelection.EMPTY)) { |
| return null; |
| } |
| Image image = LibraryUIImages.IMG_PROCESS; |
| final boolean multiple[] = { false }; |
| final Object object = getObject(objects, multiple); |
| if (object == null || ((IStructuredSelection) objects).size() > 1) { |
| return image; |
| } else { |
| Object obj = LibraryUtil.unwrap(object); |
| if (labelProvider == null) { |
| labelProvider = new AdapterFactoryLabelProvider(TngUtil.umaItemProviderAdapterFactory); |
| } |
| Image titleImage = labelProvider.getImage(obj); |
| |
| return titleImage; |
| } |
| } |
| |
| /** |
| * @see org.eclipse.jface.viewers.LabelProvider#dispose() |
| */ |
| public void dispose() { |
| labelProvider.dispose(); |
| } |
| |
| |
| /** |
| * @see org.eclipse.jface.viewers.LabelProvider#getText(java.lang.Object) |
| */ |
| public String getText(Object objects) { |
| if (objects == null || objects.equals(StructuredSelection.EMPTY)) { |
| return PropertiesResources.Process_NoItems; |
| } |
| final boolean multiple[] = { false }; |
| final Object object = getObject(objects, multiple); |
| if (object == null || ((IStructuredSelection) objects).size() > 1) { |
| Object size = new Integer(((IStructuredSelection) objects).size()); |
| String msg = PropertiesResources.bind(PropertiesResources.Process_ItemsSelected, (new Object[] { size })); |
| return msg; |
| } else { |
| |
| Object obj = LibraryUtil.unwrap(object); |
| return getName(obj); |
| } |
| } |
| |
| private String getName(Object obj) { |
| String name = null; |
| |
| String prefix = PropertiesUtil.getType(obj); |
| |
| if (obj instanceof BreakdownElement) { |
| name = prefix + " : " + ((BreakdownElement) obj).getName(); //$NON-NLS-1$ |
| } else { |
| name = PropertiesResources.Process_NoPropertiesAvailable; //$NON-NLS-1$ |
| } |
| |
| return name; |
| } |
| |
| /** |
| * Determine if a multiple object selection has been passed to the label |
| * provider. If the objects is a IStructuredSelection, see if all the |
| * objects in the selection are the same and if so, we want to provide |
| * labels for the common selected element. |
| * |
| * @param objects |
| * a single object or a IStructuredSelection. |
| * @param multiple |
| * first element in the array is true if there is multiple |
| * unequal selected elements in a IStructuredSelection. |
| * @return the object to get labels for. |
| */ |
| private Object getObject(Object objects, boolean multiple[]) { |
| Assert.isNotNull(objects); |
| Object object = null; |
| if (objects instanceof IStructuredSelection) { |
| IStructuredSelection selection = (IStructuredSelection) objects; |
| object = selection.getFirstElement(); |
| if (selection.size() == 1) { |
| // one element selected |
| multiple[0] = false; |
| return object; |
| } |
| // multiple elements selected |
| multiple[0] = true; |
| // Class firstClass = typeMapper.mapType(object, object.getClass()); |
| Class firstClass = typeMapper.mapType(object); |
| // determine if all the objects in the selection are the same type |
| if (selection.size() > 1) { |
| for (Iterator i = selection.iterator(); i.hasNext();) { |
| Object next = i.next(); |
| // Class nextClass = typeMapper.mapType(next, next |
| // .getClass()); |
| Class nextClass = typeMapper.mapType(next); |
| if (!nextClass.equals(firstClass)) { |
| // two elements not equal == multiple selected unequal |
| multiple[0] = false; |
| object = null; |
| break; |
| } |
| } |
| } |
| } else { |
| multiple[0] = false; |
| object = objects; |
| } |
| return object; |
| } |
| |
| } |