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The source code/******************************************************************************* * Copyright (c) 2007 Marcel 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: * Marcel <emmpeegee@gmail.com> - initial API and implementation *******************************************************************************/ package org.eclipse.jface.snippets.viewers; import java.util.ArrayList; import org.eclipse.jface.viewers.CellEditor; import org.eclipse.jface.viewers.ColumnViewerEditor; import org.eclipse.jface.viewers.ColumnViewerEditorActivationEvent; import org.eclipse.jface.viewers.ColumnViewerEditorActivationStrategy; import org.eclipse.jface.viewers.ICellModifier; 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.TreeViewerEditor; import org.eclipse.jface.viewers.Viewer; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.events.SelectionListener; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Menu; import org.eclipse.swt.widgets.MenuItem; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.TreeItem; /** * */ public class Snippet053StartEditorWithContextMenu implements SelectionListener { private TreeViewer viewer; private class MyContentProvider implements ITreeContentProvider { /* (non-Javadoc) * @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object) */ public Object[] getElements(Object inputElement) { return ((MyModel)inputElement).child.toArray(); } /* (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) { } /* (non-Javadoc) * @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object) */ public Object[] getChildren(Object parentElement) { return getElements(parentElement); } /* (non-Javadoc) * @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object) */ public Object getParent(Object element) { if( element == null) { return null; } return ((MyModel)element).parent; } /* (non-Javadoc) * @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object) */ public boolean hasChildren(Object element) { return ((MyModel)element).child.size() > 0; } } public class MyModel { public MyModel parent; public ArrayList child = new ArrayList(); public int counter; public MyModel(int counter, MyModel parent) { this.parent = parent; this.counter = counter; } public String toString() { String rv = "Item "; if( parent != null ) { rv = parent.toString() + "."; } rv += counter; return rv; } } public Snippet053StartEditorWithContextMenu(Shell shell) { viewer = new TreeViewer(shell, SWT.BORDER); viewer.setContentProvider(new MyContentProvider()); viewer.setCellEditors(new CellEditor[] {new TextCellEditor(viewer.getTree())}); viewer.setColumnProperties(new String[] { "name" }); viewer.setCellModifier(new ICellModifier() { /* (non-Javadoc) * @see org.eclipse.jface.viewers.ICellModifier#canModify(java.lang.Object, java.lang.String) */ public boolean canModify(Object element, String property) { return true; } /* (non-Javadoc) * @see org.eclipse.jface.viewers.ICellModifier#getValue(java.lang.Object, java.lang.String) */ public Object getValue(Object element, String property) { return ((MyModel)element).counter + ""; } /* (non-Javadoc) * @see org.eclipse.jface.viewers.ICellModifier#modify(java.lang.Object, java.lang.String, java.lang.Object) */ public void modify(Object element, String property, Object value) { TreeItem item = (TreeItem)element; ((MyModel)item.getData()).counter = Integer.parseInt(value.toString()); viewer.update(item.getData(), null); } }); TreeViewerEditor.create(viewer, new ColumnViewerEditorActivationStrategy(viewer) { 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()); } public void widgetDefaultSelected(SelectionEvent e) { } public void widgetSelected(SelectionEvent e) { IStructuredSelection selection = (IStructuredSelection) viewer.getSelection(); if (selection != null) { 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 (); } } |
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