| /******************************************************************************* |
| * Copyright (c) 2007, 2015 Marcel and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * Marcel <emmpeegee@gmail.com> - initial API and implementation |
| * Jeanderson Candido <http://jeandersonbc.github.io> - Bug 414565 |
| * Simon Scholz <simon.scholz@vogella.com> - Bug 442343, 442747 |
| * Lars Vogel <Lars.Vogel@vogella.com> - Bug 442278, 475361 |
| * Wim Jongman <wim.jongman@remainsoftware.com> - Added doc and made stable |
| *******************************************************************************/ |
| package org.eclipse.jface.snippets.viewers; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.jface.dialogs.MessageDialog; |
| import org.eclipse.jface.viewers.CellEditor; |
| import org.eclipse.jface.viewers.ColumnLabelProvider; |
| import org.eclipse.jface.viewers.ColumnViewer; |
| import org.eclipse.jface.viewers.ColumnViewerEditor; |
| import org.eclipse.jface.viewers.ColumnViewerEditorActivationEvent; |
| import org.eclipse.jface.viewers.ColumnViewerEditorActivationStrategy; |
| import org.eclipse.jface.viewers.EditingSupport; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.jface.viewers.ITreeContentProvider; |
| import org.eclipse.jface.viewers.TextCellEditor; |
| import org.eclipse.jface.viewers.TreeViewer; |
| import org.eclipse.jface.viewers.TreeViewerColumn; |
| import org.eclipse.jface.viewers.TreeViewerEditor; |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.events.SelectionAdapter; |
| import org.eclipse.swt.events.SelectionEvent; |
| import org.eclipse.swt.layout.FillLayout; |
| import org.eclipse.swt.widgets.Composite; |
| import org.eclipse.swt.widgets.Display; |
| import org.eclipse.swt.widgets.Menu; |
| import org.eclipse.swt.widgets.MenuItem; |
| import org.eclipse.swt.widgets.Shell; |
| |
| /** |
| * Demonstrates how you can start editing a cell after selecting a context menu. |
| */ |
| public class Snippet053StartEditorWithContextMenu extends SelectionAdapter { |
| |
| private TreeViewer viewer; |
| |
| private class MyContentProvider implements ITreeContentProvider { |
| |
| @Override |
| public Object[] getElements(Object inputElement) { |
| return ((MyModel) inputElement).child.toArray(); |
| } |
| |
| @Override |
| public void dispose() { |
| |
| } |
| |
| @Override |
| public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { |
| |
| } |
| |
| @Override |
| public Object[] getChildren(Object parentElement) { |
| return getElements(parentElement); |
| } |
| |
| @Override |
| public Object getParent(Object element) { |
| if (element == null) { |
| return null; |
| } |
| return ((MyModel) element).parent; |
| } |
| |
| @Override |
| public boolean hasChildren(Object element) { |
| return ((MyModel) element).child.size() > 0; |
| } |
| |
| } |
| |
| public static class MyModel { |
| public MyModel parent; |
| |
| public List<MyModel> child = new ArrayList<>(); |
| |
| public int counter; |
| |
| public MyModel(int counter, MyModel parent) { |
| this.parent = parent; |
| this.counter = counter; |
| } |
| |
| @Override |
| public String toString() { |
| String rv = "Item "; |
| if (parent != null) { |
| rv = parent + "."; |
| } |
| rv += counter; |
| |
| return rv; |
| } |
| } |
| |
| public class MyEditingSupport extends EditingSupport { |
| |
| public MyEditingSupport(ColumnViewer viewer) { |
| super(viewer); |
| } |
| |
| @Override |
| protected CellEditor getCellEditor(Object element) { |
| return new TextCellEditor((Composite) getViewer().getControl()); |
| } |
| |
| @Override |
| protected boolean canEdit(Object element) { |
| return true; |
| } |
| |
| @Override |
| protected Object getValue(Object element) { |
| return ((MyModel) element).counter + ""; |
| } |
| |
| @Override |
| protected void setValue(Object element, Object value) { |
| try { |
| ((MyModel) element).counter = Integer.parseInt(value.toString()); |
| getViewer().update(element, null); |
| } catch (Exception e) { |
| MessageDialog.openError(viewer.getControl().getShell(), "Oops", "We only accept numbers.."); |
| } |
| |
| } |
| } |
| |
| public Snippet053StartEditorWithContextMenu(Shell shell) { |
| viewer = new TreeViewer(shell, SWT.BORDER); |
| viewer.setContentProvider(new MyContentProvider()); |
| |
| TreeViewerColumn viewerColumn = new TreeViewerColumn(viewer, SWT.NONE); |
| viewerColumn.getColumn().setWidth(200); |
| |
| viewerColumn.setEditingSupport(new MyEditingSupport(viewer)); |
| viewerColumn.setLabelProvider(new ColumnLabelProvider()); |
| |
| TreeViewerEditor.create(viewer, new ColumnViewerEditorActivationStrategy(viewer) { |
| @Override |
| protected boolean isEditorActivationEvent(ColumnViewerEditorActivationEvent event) { |
| return event.eventType == ColumnViewerEditorActivationEvent.PROGRAMMATIC; |
| } |
| }, ColumnViewerEditor.DEFAULT); |
| |
| Menu menu = new Menu(viewer.getControl()); |
| MenuItem renameItem = new MenuItem(menu, SWT.PUSH); |
| renameItem.addSelectionListener(this); |
| renameItem.setText("Rename"); |
| viewer.getTree().setMenu(menu); |
| |
| viewer.setInput(createModel()); |
| } |
| |
| @Override |
| public void widgetSelected(SelectionEvent e) { |
| IStructuredSelection selection = viewer.getStructuredSelection(); |
| if (!selection.isEmpty()) { |
| viewer.editElement(selection.getFirstElement(), 0); |
| } |
| } |
| |
| private MyModel createModel() { |
| |
| MyModel root = new MyModel(0, null); |
| root.counter = 0; |
| |
| MyModel tmp; |
| for (int i = 1; i < 10; i++) { |
| tmp = new MyModel(i, root); |
| root.child.add(tmp); |
| for (int j = 1; j < i; j++) { |
| tmp.child.add(new MyModel(j, tmp)); |
| } |
| } |
| |
| return root; |
| } |
| |
| public static void main(String[] args) { |
| Display display = new Display(); |
| Shell shell = new Shell(display); |
| shell.setLayout(new FillLayout()); |
| new Snippet053StartEditorWithContextMenu(shell); |
| shell.open(); |
| |
| while (!shell.isDisposed()) { |
| if (!display.readAndDispatch()) |
| display.sleep(); |
| } |
| |
| display.dispose(); |
| } |
| } |