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/*******************************************************************************
* 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();
}
}
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