org.eclipse.swt.snippets.Snippet357.java Source code

Introduction

Here is the source code for org.eclipse.swt.snippets.Snippet357.java

Source

/*******************************************************************************
 * Copyright (c) 2011, 2013 IBM Corporation and others.
 *
 * This Example Content is intended to demonstrate
 * usage of Eclipse technology. It is provided to you under the terms and
 * conditions of the Eclipse Distribution License v1.0 which is available
 * at http://www.eclipse.org/org/documents/edl-v10.php
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.swt.snippets;

/*
 * Accessibility example snippet: provide a way for an AT to
 * set text attributes in a StyledText.
 *
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 */
import org.eclipse.swt.*;
import org.eclipse.swt.accessibility.*;
import org.eclipse.swt.custom.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;

public class Snippet357 {

    public static void main(String[] args) {
        final Display display = new Display();
        Shell shell = new Shell(display);
        shell.setText("Snippet 357");
        shell.setLayout(new FillLayout());

        final StyledText text = new StyledText(shell, SWT.BORDER | SWT.MULTI);
        text.setText("The quick brown fox jumps over the lazy dog.\nThat's all folks!");
        TextStyle textStyle = new TextStyle(new Font(display, "Courier", 12, SWT.BOLD),
                display.getSystemColor(SWT.COLOR_RED), null);
        textStyle.strikeout = true;
        textStyle.underline = true;
        textStyle.underlineStyle = SWT.UNDERLINE_SINGLE;
        text.setStyleRanges(new int[] { 4, 5 }, new StyleRange[] { new StyleRange(textStyle) });

        text.getAccessible().addAccessibleEditableTextListener(new AccessibleEditableTextAdapter() {
            @Override
            public void setTextAttributes(AccessibleTextAttributeEvent e) {
                TextStyle textStyle = e.textStyle;
                if (textStyle != null) {
                    /* Copy all of the TextStyle fields into the new StyleRange. */
                    StyleRange style = new StyleRange(textStyle);
                    /* Create new graphics resources because the old ones are only valid during the event. */
                    if (textStyle.font != null)
                        style.font = new Font(display, textStyle.font.getFontData());
                    if (textStyle.foreground != null)
                        style.foreground = new Color(display, textStyle.foreground.getRGB());
                    if (textStyle.background != null)
                        style.background = new Color(display, textStyle.background.getRGB());
                    if (textStyle.underlineColor != null)
                        style.underlineColor = new Color(display, textStyle.underlineColor.getRGB());
                    if (textStyle.strikeoutColor != null)
                        style.strikeoutColor = new Color(display, textStyle.strikeoutColor.getRGB());
                    if (textStyle.borderColor != null)
                        style.borderColor = new Color(display, textStyle.borderColor.getRGB());
                    /* Set the StyleRange into the StyledText. */
                    style.start = e.start;
                    style.length = e.end - e.start;
                    text.setStyleRange(style);
                    e.result = ACC.OK;
                } else {
                    text.setStyleRanges(e.start, e.end - e.start, null, null);
                }
            }
        });

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