| /******************************************************************************* |
| * Copyright (c) 2000, 2004 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.swt.snippets; |
| |
| /* |
| * TreeEditor example snippet: edit the text of a tree item (in place, fancy) |
| * |
| * For a list of all SWT example snippets see |
| * http://www.eclipse.org/swt/snippets/ |
| */ |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.widgets.*; |
| import org.eclipse.swt.layout.*; |
| import org.eclipse.swt.custom.*; |
| |
| public class Snippet111 { |
| |
| public static void main (String [] args) { |
| final Display display = new Display (); |
| final Color black = display.getSystemColor (SWT.COLOR_BLACK); |
| Shell shell = new Shell (display); |
| shell.setLayout (new FillLayout ()); |
| final Tree tree = new Tree (shell, SWT.BORDER); |
| for (int i=0; i<16; i++) { |
| TreeItem itemI = new TreeItem (tree, SWT.NONE); |
| itemI.setText ("Item " + i); |
| for (int j=0; j<16; j++) { |
| TreeItem itemJ = new TreeItem (itemI, SWT.NONE); |
| itemJ.setText ("Item " + j); |
| } |
| } |
| final TreeItem [] lastItem = new TreeItem [1]; |
| final TreeEditor editor = new TreeEditor (tree); |
| tree.addListener (SWT.Selection, new Listener () { |
| public void handleEvent (Event event) { |
| final TreeItem item = (TreeItem) event.item; |
| if (item != null && item == lastItem [0]) { |
| boolean showBorder = true; |
| final Composite composite = new Composite (tree, SWT.NONE); |
| if (showBorder) composite.setBackground (black); |
| final Text text = new Text (composite, SWT.NONE); |
| final int inset = showBorder ? 1 : 0; |
| composite.addListener (SWT.Resize, new Listener () { |
| public void handleEvent (Event e) { |
| Rectangle rect = composite.getClientArea (); |
| text.setBounds (rect.x + inset, rect.y + inset, rect.width - inset * 2, rect.height - inset * 2); |
| } |
| }); |
| Listener textListener = new Listener () { |
| public void handleEvent (final Event e) { |
| switch (e.type) { |
| case SWT.FocusOut: |
| item.setText (text.getText ()); |
| composite.dispose (); |
| break; |
| case SWT.Verify: |
| String newText = text.getText (); |
| String leftText = newText.substring (0, e.start); |
| String rightText = newText.substring (e.end, newText.length ()); |
| GC gc = new GC (text); |
| Point size = gc.textExtent (leftText + e.text + rightText); |
| gc.dispose (); |
| size = text.computeSize (size.x, SWT.DEFAULT); |
| editor.horizontalAlignment = SWT.LEFT; |
| Rectangle itemRect = item.getBounds (), rect = tree.getClientArea (); |
| editor.minimumWidth = Math.max (size.x, itemRect.width) + inset * 2; |
| int left = itemRect.x, right = rect.x + rect.width; |
| editor.minimumWidth = Math.min (editor.minimumWidth, right - left); |
| editor.minimumHeight = size.y + inset * 2; |
| editor.layout (); |
| break; |
| case SWT.Traverse: |
| switch (e.detail) { |
| case SWT.TRAVERSE_RETURN: |
| item.setText (text.getText ()); |
| //FALL THROUGH |
| case SWT.TRAVERSE_ESCAPE: |
| composite.dispose (); |
| e.doit = false; |
| } |
| break; |
| } |
| } |
| }; |
| text.addListener (SWT.FocusOut, textListener); |
| text.addListener (SWT.Traverse, textListener); |
| text.addListener (SWT.Verify, textListener); |
| editor.setEditor (composite, item); |
| text.setText (item.getText ()); |
| text.selectAll (); |
| text.setFocus (); |
| } |
| lastItem [0] = item; |
| } |
| }); |
| shell.pack (); |
| shell.open (); |
| while (!shell.isDisposed()) { |
| if (!display.readAndDispatch ()) display.sleep (); |
| } |
| display.dispose (); |
| } |
| } |