| /******************************************************************************* |
| * Copyright (c) 2009, 2016 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.snippets; |
| |
| /* |
| * Tree example snippet: show a menu in a tree header |
| * |
| * For a list of all SWT example snippets see |
| * http://www.eclipse.org/swt/snippets/ |
| * |
| * @since 3.5 |
| */ |
| |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.layout.*; |
| import org.eclipse.swt.widgets.*; |
| |
| public class Snippet312 { |
| |
| static String[][] files = { |
| {"ver.txt", "1 KB", "Text Document", "28/09/2005 9:57 AM", "admin",}, |
| {"Thumbs.db", "76 KB", "Data Base file", "13/03/2006 3:56 PM", "john",}, |
| {"daddy.bmp", "148 MB", "Bitmap", "27/10/2008 1:34 PM", "bill",}, |
| {"io.sys", "48 KB", "File System", "16/12/2008 6:14 AM", "admin",}, |
| {"Programs", "0 KB", "File Folder", "04/02/2009 12:18 PM", "anne",}, |
| {"test.rnd", "55 MB", "RND File", "19/02/2009 5:49 PM", "john",}, |
| {"arial.ttf", "94 KB", "True Type Font", "25/08/2008 1:25 PM", "john",}, |
| }; |
| |
| static void createMenuItem(Menu parent, final TreeColumn column) { |
| final MenuItem itemName = new MenuItem(parent, SWT.CHECK); |
| itemName.setText(column.getText()); |
| itemName.setSelection(column.getResizable()); |
| itemName.addListener(SWT.Selection, event -> { |
| if (itemName.getSelection()) { |
| column.setWidth(150); |
| column.setResizable(true); |
| } else { |
| column.setWidth(0); |
| column.setResizable(false); |
| } |
| }); |
| } |
| |
| public static void main (String[] args) { |
| final Display display = new Display(); |
| Shell shell = new Shell(display); |
| shell.setLayout(new FillLayout()); |
| |
| final Tree tree = new Tree(shell, SWT.V_SCROLL|SWT.H_SCROLL| SWT.BORDER); |
| tree.setHeaderVisible(true); |
| final Menu headerMenu = new Menu(shell, SWT.POP_UP); |
| final TreeColumn columnName = new TreeColumn(tree, SWT.NONE); |
| columnName.setText("Name"); |
| columnName.setWidth(150); |
| createMenuItem(headerMenu, columnName); |
| final TreeColumn columnSize = new TreeColumn(tree, SWT.NONE); |
| columnSize.setText("Size"); |
| columnSize.setWidth(150); |
| createMenuItem(headerMenu, columnSize); |
| final TreeColumn columnType = new TreeColumn(tree, SWT.NONE); |
| columnType.setText("Type"); |
| columnType.setWidth(150); |
| createMenuItem(headerMenu, columnType); |
| final TreeColumn columnDate = new TreeColumn(tree, SWT.NONE); |
| columnDate.setText("Date"); |
| columnDate.setWidth(150); |
| createMenuItem(headerMenu, columnDate); |
| final TreeColumn columnOwner = new TreeColumn(tree, SWT.NONE); |
| columnOwner.setText("Owner"); |
| columnOwner.setWidth(0); |
| columnOwner.setResizable(false); |
| createMenuItem(headerMenu, columnOwner); |
| |
| for (int i = 0; i < files.length; i++) { |
| TreeItem item = new TreeItem(tree, SWT.NONE); |
| item.setText(files[i]); |
| TreeItem subItem = new TreeItem(item, SWT.NONE); |
| subItem.setText("node"); |
| } |
| |
| final Menu treeMenu = new Menu(shell, SWT.POP_UP); |
| MenuItem item = new MenuItem(treeMenu, SWT.PUSH); |
| item.setText("Open"); |
| item = new MenuItem(treeMenu, SWT.PUSH); |
| item.setText("Open With"); |
| new MenuItem(treeMenu, SWT.SEPARATOR); |
| item = new MenuItem(treeMenu, SWT.PUSH); |
| item.setText("Cut"); |
| item = new MenuItem(treeMenu, SWT.PUSH); |
| item.setText("Copy"); |
| item = new MenuItem(treeMenu, SWT.PUSH); |
| item.setText("Paste"); |
| new MenuItem(treeMenu, SWT.SEPARATOR); |
| item = new MenuItem(treeMenu, SWT.PUSH); |
| item.setText("Delete"); |
| |
| tree.addListener(SWT.MenuDetect, event -> { |
| Point pt = display.map(null, tree, new Point(event.x, event.y)); |
| Rectangle clientArea = tree.getClientArea(); |
| boolean header = clientArea.y <= pt.y && pt.y < (clientArea.y + tree.getHeaderHeight()); |
| tree.setMenu(header ? headerMenu : treeMenu); |
| }); |
| |
| /* IMPORTANT: Dispose the menus (only the current menu, set with setMenu(), will be automatically disposed) */ |
| tree.addListener(SWT.Dispose, event -> { |
| headerMenu.dispose(); |
| treeMenu.dispose(); |
| }); |
| |
| shell.open(); |
| while (!shell.isDisposed()) { |
| if (!display.readAndDispatch()) { |
| display.sleep(); |
| } |
| } |
| display.dispose(); |
| } |
| } |