RCP tree Menu

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/******************************************************************************* * Copyright (c) 2009 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;/* * 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.events.MouseEvent;import org.eclipse.swt.events.MouseListener;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, new Listener() {            @Override            public void handleEvent(Event event) {                if (itemName.getSelection()) {                    column.setWidth(150);                    column.setResizable(true);                } else {                    column.setWidth(0);                    column.setResizable(false);                }            }        });    }    static void createMenuItem(Menu parent, final Tree tree1) {        final MenuItem itemName = new MenuItem(parent, SWT.CHECK);    }    public static void tree1MouseDown(MouseEvent e, final Tree tree1, Shell shell) {        TreeItem selected = tree1.getItem(new Point(e.x, e.y)); // 取節點控制項        if (selected != null && e.button == 3) // 如果取到節點控制項，且是滑鼠右鍵        {            Menu menu = new Menu(shell, SWT.POP_UP); // 為節點建POP UP菜單            if (selected.getParentItem() != null) // 如果不是根節點            {                            } else { // 如果，是根節點，即selected.getParentItem()==null為真。                System.out.println("@@@@$#");                MenuItem mi4 = new MenuItem(menu, SWT.PUSH); // 為菜單，建功能表項目                mi4.setText("向[" + selected.getText() + "]節點，傳送立即訊息！");                mi4.setData(selected.getText()); // 向響應功能表項目事件的代碼，傳遞值。                mi4.addListener(SWT.Selection, new Listener() {                    public void handleEvent(Event e) { // 向指定使用者發送訊息!                        MenuItem mi = (MenuItem) e.widget; // 取功能表項目Widget                        String selected = (String) mi.getData(); // 取，在建立功能表項目時，傳過來的對象。                        if (selected != null) { // 添加，響應代碼                            System.out.println("aaa");                            tree1.setMenu(null); // 取消快顯功能表                        }                    }                });                tree1.setMenu(menu); // 設定快顯功能表            }                    } else if (e.button == 3) // 選中的是樹形控制項的空白區        {            // 響應程式碼片段，略            tree1.setMenu(null); // 取消快顯功能表        }    }    public static void main(String[] args) {        final Display display = new Display();        final 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);        tree.addMouseListener(new MouseListener() {            @Override            public void mouseUp(MouseEvent e) {            }            @Override            public void mouseDown(MouseEvent e) {                tree1MouseDown(e, tree, shell);            }            @Override            public void mouseDoubleClick(MouseEvent e) {                            }        });        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"+i);        }        /*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);// 分隔字元        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);// 分隔字元        item = new MenuItem(treeMenu, SWT.PUSH);        item.setText("Delete");        tree.addListener(SWT.MenuDetect, new Listener() {            @Override            public void handleEvent(Event 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, new Listener() {            @Override            public void handleEvent(Event event) {                headerMenu.dispose();                treeMenu.dispose();            }        });*/        shell.open();        while (!shell.isDisposed()) {            if (!display.readAndDispatch()) {                display.sleep();            }        }        display.dispose();    }}

 

RCP tree Menu