| /******************************************************************************* |
| * Copyright (c) 2000, 2018 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 |
| * Lars Vogel <Lars.Vogel@vogella.com> - Bug 487943 |
| *******************************************************************************/ |
| package org.eclipse.pde.internal.ui.editor; |
| |
| import java.util.ArrayList; |
| import org.eclipse.jface.viewers.*; |
| import org.eclipse.pde.core.*; |
| import org.eclipse.pde.internal.core.plugin.ImportObject; |
| import org.eclipse.pde.internal.core.text.IDocumentElementNode; |
| import org.eclipse.pde.internal.ui.PDEPlugin; |
| import org.eclipse.pde.internal.ui.PDEPluginImages; |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.swt.widgets.*; |
| import org.eclipse.ui.forms.editor.IFormPage; |
| |
| public class FormOutlinePage extends PDEOutlinePage implements IModelChangedListener, ISortableContentOutlinePage { |
| |
| private boolean fStale; |
| private ViewerComparator fViewerComparator; |
| private boolean fSorted; |
| |
| public class BasicContentProvider implements ITreeContentProvider { |
| @Override |
| public Object[] getElements(Object obj) { |
| return getPages(); |
| } |
| |
| @Override |
| public Object[] getChildren(Object obj) { |
| return FormOutlinePage.this.getChildren(obj); |
| } |
| |
| @Override |
| public boolean hasChildren(Object obj) { |
| return getChildren(obj).length > 0; |
| } |
| |
| @Override |
| public Object getParent(Object obj) { |
| return null; |
| } |
| } |
| |
| public class BasicLabelProvider extends LabelProvider { |
| private ILabelProvider fWrappedLabelProvider; |
| |
| public BasicLabelProvider(ILabelProvider ilp) { |
| fWrappedLabelProvider = ilp; |
| } |
| |
| @Override |
| public String getText(Object obj) { |
| if (obj instanceof IFormPage) |
| return ((IFormPage) obj).getTitle(); |
| return fWrappedLabelProvider.getText(obj); |
| } |
| |
| @Override |
| public Image getImage(Object obj) { |
| if (obj instanceof IFormPage) |
| return PDEPlugin.getDefault().getLabelProvider().get(PDEPluginImages.DESC_PAGE_OBJ); |
| return fWrappedLabelProvider.getImage(obj); |
| } |
| } |
| |
| public class BasicComparator extends ViewerComparator { |
| @Override |
| public int category(Object element) { |
| Object[] pages = getPages(); |
| for (int i = 0; i < pages.length; i++) { |
| if (pages[i] == element) { |
| return i; |
| } |
| } |
| return Integer.MAX_VALUE; |
| } |
| } |
| |
| protected TreeViewer fTreeViewer; |
| protected boolean fEditorSelection = false; |
| protected boolean fOutlineSelection = false; |
| |
| public FormOutlinePage(PDEFormEditor editor) { |
| super(editor); |
| } |
| |
| public ITreeContentProvider createContentProvider() { |
| return new BasicContentProvider(); |
| } |
| |
| public ViewerComparator createOutlineSorter() { |
| return new BasicComparator(); |
| } |
| |
| @Override |
| public void createControl(Composite parent) { |
| Tree widget = new Tree(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL); |
| fTreeViewer = new TreeViewer(widget); |
| fTreeViewer.addSelectionChangedListener(this); |
| fTreeViewer.setContentProvider(createContentProvider()); |
| fTreeViewer.setLabelProvider(createLabelProvider()); |
| fViewerComparator = createOutlineSorter(); |
| if (fSorted) |
| fTreeViewer.setComparator(fViewerComparator); |
| else |
| fTreeViewer.setComparator(null); |
| fTreeViewer.setAutoExpandLevel(AbstractTreeViewer.ALL_LEVELS); |
| fTreeViewer.setUseHashlookup(true); |
| fTreeViewer.setInput(fEditor); |
| IBaseModel model = fEditor.getAggregateModel(); |
| if (model instanceof IModelChangeProvider) |
| ((IModelChangeProvider) model).addModelChangedListener(this); |
| } |
| |
| public ILabelProvider createLabelProvider() { |
| return new BasicLabelProvider(PDEPlugin.getDefault().getLabelProvider()); |
| } |
| |
| @Override |
| public void dispose() { |
| IBaseModel model = fEditor.getAggregateModel(); |
| if (model instanceof IModelChangeProvider) |
| ((IModelChangeProvider) model).removeModelChangedListener(this); |
| super.dispose(); |
| } |
| |
| @Override |
| public Control getControl() { |
| return fTreeViewer != null ? fTreeViewer.getControl() : null; |
| } |
| |
| private Object[] getPages() { |
| ArrayList<IFormPage> formPages = new ArrayList<>(); |
| IFormPage[] pages = fEditor.getPages(); |
| for (IFormPage page : pages) { |
| if (page.isEditor() == false) |
| formPages.add(page); |
| } |
| return formPages.toArray(); |
| } |
| |
| @Override |
| public void modelChanged(IModelChangedEvent event) { |
| IFormPage page = fEditor.getActivePageInstance(); |
| fStale = true; |
| if (page.isEditor() == false) |
| refresh(); |
| } |
| |
| public void refresh() { |
| if (fStale) { |
| final Control control = getControl(); |
| if (control == null || control.isDisposed()) |
| return; |
| control.getDisplay().asyncExec(() -> { |
| if (!fTreeViewer.getControl().isDisposed()) { |
| fTreeViewer.refresh(); |
| fTreeViewer.expandAll(); |
| fStale = false; |
| } |
| }); |
| } |
| } |
| |
| protected String getParentPageId(Object item) { |
| if (item instanceof IFormPage) |
| return ((IFormPage) item).getId(); |
| return null; |
| } |
| |
| protected Object[] getChildren(Object parent) { |
| return new Object[0]; |
| } |
| |
| public void selectionChanged(Object item) { |
| IFormPage page = fEditor.getActivePageInstance(); |
| String id = getParentPageId(item); |
| IFormPage newPage = null; |
| if (id != null && (page == null || !page.getId().equals(id))) |
| newPage = fEditor.setActivePage(id); |
| IFormPage revealPage = newPage != null ? newPage : page; |
| if (revealPage != null && !(item instanceof IFormPage)) |
| revealPage.selectReveal(item); |
| } |
| |
| @Override |
| public void selectionChanged(SelectionChangedEvent event) { |
| if (fEditorSelection) |
| return; |
| fOutlineSelection = true; |
| try { |
| ISelection selection = event.getSelection(); |
| if (selection.isEmpty() == false && selection instanceof IStructuredSelection) { |
| IStructuredSelection ssel = (IStructuredSelection) selection; |
| Object item = ssel.getFirstElement(); |
| selectionChanged(item); |
| } |
| fireSelectionChanged(selection); |
| } finally { |
| fOutlineSelection = false; |
| } |
| } |
| |
| @Override |
| public void setFocus() { |
| if (fTreeViewer != null) |
| fTreeViewer.getTree().setFocus(); |
| } |
| |
| @Override |
| public ISelection getSelection() { |
| if (fTreeViewer == null) |
| return StructuredSelection.EMPTY; |
| return fTreeViewer.getSelection(); |
| } |
| |
| @Override |
| public void sort(boolean sorting) { |
| fSorted = sorting; |
| if (fTreeViewer != null) |
| if (sorting) |
| fTreeViewer.setComparator(fViewerComparator); |
| else |
| fTreeViewer.setComparator(null); |
| } |
| |
| @Override |
| public void setSelection(ISelection selection) { |
| if (fOutlineSelection) |
| return; |
| fEditorSelection = true; |
| try { |
| if (fTreeViewer == null) |
| return; |
| if (selection != null && !selection.isEmpty() && selection instanceof IStructuredSelection) { |
| Object item = ((IStructuredSelection) selection).getFirstElement(); |
| if (item instanceof ImportObject) { |
| selection = new StructuredSelection(((ImportObject) item).getImport()); |
| } |
| if (item instanceof IDocumentElementNode) { |
| while (null == fTreeViewer.testFindItem(item)) { |
| item = ((IDocumentElementNode) item).getParentNode(); |
| if (item == null) { |
| break; |
| } |
| selection = new StructuredSelection(item); |
| } |
| } |
| } |
| fTreeViewer.setSelection(selection); |
| } finally { |
| fEditorSelection = false; |
| } |
| } |
| |
| @Override |
| protected TreeViewer getTreeViewer() { |
| return fTreeViewer; |
| } |
| } |