| /******************************************************************************* |
| * Copyright (c) 2000, 2003 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.ant.internal.ui.preferences; |
| |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.jface.viewers.ITreeContentProvider; |
| import org.eclipse.jface.viewers.StructuredSelection; |
| import org.eclipse.jface.viewers.TreeViewer; |
| import org.eclipse.jface.viewers.Viewer; |
| |
| /** |
| * Content provider that maintains a list of classpath entries which are shown in a tree |
| * viewer. |
| */ |
| public class AntClasspathContentProvider implements ITreeContentProvider { |
| private TreeViewer treeViewer; |
| private ClasspathModel model= null; |
| private boolean refreshEnabled= false; |
| private boolean refreshRequested= false; |
| |
| public void add(IClasspathEntry parent, Object child) { |
| Object newEntry= null; |
| boolean added= false; |
| if (parent == null || parent == model) { |
| added= true; |
| newEntry= model.addEntry(child); |
| if (newEntry == null) { |
| //entry already exists |
| newEntry= model.createEntry(child, model); |
| added= false; |
| } |
| parent= model; |
| } else if (parent instanceof GlobalClasspathEntries) { |
| GlobalClasspathEntries globalParent= (GlobalClasspathEntries) parent; |
| newEntry= model.createEntry(child, globalParent); |
| ClasspathEntry newClasspathEntry= (ClasspathEntry) newEntry; |
| if (!globalParent.contains(newClasspathEntry)) { |
| added= true; |
| globalParent.addEntry(newClasspathEntry); |
| } |
| } |
| if (newEntry != null) { |
| if (added) { |
| treeViewer.add(parent, newEntry); |
| } |
| treeViewer.setExpandedState(parent, true); |
| treeViewer.setSelection(new StructuredSelection(newEntry), true); |
| refresh(); |
| } |
| } |
| |
| public void add(int entryType, Object child) { |
| Object newEntry= model.addEntry(entryType, child); |
| if (newEntry != null) { |
| treeViewer.add(getParent(newEntry), newEntry); |
| refresh(); |
| } |
| } |
| |
| public void removeAll() { |
| model.removeAll(); |
| refresh(); |
| } |
| |
| private void refresh() { |
| if (refreshEnabled) { |
| treeViewer.refresh(); |
| refreshRequested= false; |
| } else { |
| refreshRequested= true; |
| } |
| } |
| |
| public void removeAllGlobalAntClasspathEntries() { |
| model.removeAll(ClasspathModel.ANT_HOME); |
| refresh(); |
| } |
| |
| /** |
| * @see ITreeContentProvider#getParent(Object) |
| */ |
| public Object getParent(Object element) { |
| if (element instanceof ClasspathEntry) { |
| return ((ClasspathEntry)element).getParent(); |
| } |
| if (element instanceof GlobalClasspathEntries) { |
| return model; |
| } |
| |
| return null; |
| } |
| |
| /** |
| * @see ITreeContentProvider#hasChildren(Object) |
| */ |
| public boolean hasChildren(Object element) { |
| if (element instanceof ClasspathEntry) { |
| return false; |
| } |
| if (element instanceof GlobalClasspathEntries) { |
| return ((GlobalClasspathEntries)element).hasEntries(); |
| |
| } |
| |
| if (element instanceof ClasspathModel) { |
| return ((ClasspathModel) element).hasEntries(); |
| } |
| return false; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object) |
| */ |
| public Object[] getElements(Object inputElement) { |
| return getChildren(inputElement); |
| } |
| |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.viewers.IContentProvider#dispose() |
| */ |
| public void dispose() { |
| |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object) |
| */ |
| public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { |
| treeViewer = (TreeViewer) viewer; |
| |
| if (newInput != null) { |
| model= (ClasspathModel)newInput; |
| } else { |
| if (model != null) { |
| model.removeAll(); |
| } |
| model= null; |
| } |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object) |
| */ |
| public Object[] getChildren(Object parentElement) { |
| if (parentElement instanceof GlobalClasspathEntries) { |
| return ((GlobalClasspathEntries)parentElement).getEntries(); |
| } |
| if (parentElement instanceof ClasspathModel) { |
| return ((ClasspathModel)parentElement).getEntries(); |
| } |
| if (parentElement == null) { |
| List all= new ArrayList(); |
| Object[] topEntries= model.getEntries(); |
| for (int i = 0; i < topEntries.length; i++) { |
| Object object = topEntries[i]; |
| if (object instanceof ClasspathEntry) { |
| all.add(object); |
| } else if (object instanceof GlobalClasspathEntries) { |
| all.addAll(Arrays.asList(((GlobalClasspathEntries)object).getEntries())); |
| } |
| } |
| return all.toArray(); |
| } |
| |
| return null; |
| } |
| |
| public void remove(IStructuredSelection selection) { |
| Object[] array= selection.toArray(); |
| model.removeAll(array); |
| treeViewer.remove(array); |
| refresh(); |
| } |
| |
| public ClasspathModel getModel() { |
| return model; |
| } |
| |
| public void setRefreshEnabled(boolean refreshEnabled) { |
| this.refreshEnabled = refreshEnabled; |
| treeViewer.getTree().setRedraw(refreshEnabled); |
| if (refreshEnabled && refreshRequested) { |
| refresh(); |
| } |
| } |
| |
| /** |
| * @param currentParent |
| */ |
| public void setEntries(IClasspathEntry currentParent, List entries) { |
| if (currentParent instanceof GlobalClasspathEntries) { |
| GlobalClasspathEntries group= (GlobalClasspathEntries) currentParent; |
| group.setEntries(entries); |
| } |
| |
| } |
| } |