| /******************************************************************************* |
| * Copyright (c) 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 API and implementation |
| ******************************************************************************/ |
| |
| package org.eclipse.ui.internal.navigator.filters; |
| |
| import org.eclipse.jface.viewers.CheckboxTableViewer; |
| import org.eclipse.jface.viewers.ITreeContentProvider; |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.swt.widgets.TableItem; |
| import org.eclipse.ui.navigator.INavigatorContentDescriptor; |
| import org.eclipse.ui.navigator.INavigatorContentService; |
| |
| class ContentDescriptorContentProvider implements ITreeContentProvider { |
| |
| private static final Object[] NO_CHILDREN = new Object[0]; |
| |
| private INavigatorContentService contentService; |
| |
| private CheckboxTableViewer talbleViewer; |
| |
| public void inputChanged(Viewer aViewer, Object anOldInput, Object aNewInput) { |
| |
| if (aNewInput != null) { |
| |
| if (aNewInput instanceof INavigatorContentService) { |
| contentService = (INavigatorContentService) aNewInput; |
| } |
| |
| if (aViewer instanceof CheckboxTableViewer) { |
| talbleViewer = (CheckboxTableViewer) aViewer; |
| } |
| |
| updateCheckState(); |
| } else { |
| contentService = null; |
| talbleViewer = null; |
| } |
| |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object) |
| */ |
| public Object[] getChildren(Object aParentElement) { |
| return NO_CHILDREN; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object) |
| */ |
| public Object getParent(Object anElement) { |
| return null; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object) |
| */ |
| public boolean hasChildren(Object anElement) { |
| return getChildren(anElement).length != 0; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object) |
| */ |
| public Object[] getElements(Object anInputElement) { |
| return contentService != null ? contentService.getVisibleExtensions() |
| : NO_CHILDREN; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.IContentProvider#dispose() |
| */ |
| public void dispose() { |
| |
| } |
| |
| private void updateCheckState() { |
| if (talbleViewer == null || contentService == null) { |
| return; |
| } |
| |
| INavigatorContentDescriptor descriptor; |
| boolean enabled; |
| |
| TableItem[] descriptorTableItems = talbleViewer.getTable().getItems(); |
| for (int i = 0; i < descriptorTableItems.length; i++) { |
| if (descriptorTableItems[i].getData() instanceof INavigatorContentDescriptor) { |
| descriptor = (INavigatorContentDescriptor) descriptorTableItems[i] |
| .getData(); |
| enabled = contentService.getActivationService() |
| .isNavigatorExtensionActive(descriptor.getId()); |
| talbleViewer.setChecked(descriptor, enabled); |
| } |
| } |
| } |
| |
| } |