DialogLayoutDemo.java Source code

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Here is the source code for DialogLayoutDemo.java

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/*******************************************************************************
 * 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;
/*
 * FormLayout example snippet: create a simple dialog using form layout
 *
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 */
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.List;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;

public class DialogLayoutDemo {

    public static void main(String[] args) {
        Display display = new Display();
        final Shell shell = new Shell(display);
        Label label = new Label(shell, SWT.WRAP);
        label.setText("This is a long text string that will wrap when the dialog is resized.");
        List list = new List(shell, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);
        list.setItems(new String[] { "Item 1", "Item 2" });
        Button button1 = new Button(shell, SWT.PUSH);
        button1.setText("OK");
        Button button2 = new Button(shell, SWT.PUSH);
        button2.setText("Cancel");

        final int insetX = 4, insetY = 4;
        FormLayout formLayout = new FormLayout();
        formLayout.marginWidth = insetX;
        formLayout.marginHeight = insetY;
        shell.setLayout(formLayout);

        Point size = label.computeSize(SWT.DEFAULT, SWT.DEFAULT);
        final FormData labelData = new FormData(size.x, SWT.DEFAULT);
        labelData.left = new FormAttachment(0, 0);
        labelData.right = new FormAttachment(100, 0);
        label.setLayoutData(labelData);
        shell.addListener(SWT.Resize, new Listener() {
            public void handleEvent(Event e) {
                Rectangle rect = shell.getClientArea();
                labelData.width = rect.width - insetX * 2;
                shell.layout();
            }
        });

        FormData button2Data = new FormData();
        button2Data.right = new FormAttachment(100, -insetX);
        button2Data.bottom = new FormAttachment(100, 0);
        button2.setLayoutData(button2Data);

        FormData button1Data = new FormData();
        button1Data.right = new FormAttachment(button2, -insetX);
        button1Data.bottom = new FormAttachment(100, 0);
        button1.setLayoutData(button1Data);

        FormData listData = new FormData();
        listData.left = new FormAttachment(0, 0);
        listData.right = new FormAttachment(100, 0);
        listData.top = new FormAttachment(label, insetY);
        listData.bottom = new FormAttachment(button2, -insetY);
        list.setLayoutData(listData);

        shell.pack();
        shell.open();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch())
                display.sleep();
        }
        display.dispose();
    }
}