Dynamic syntax coloring : StyledText Style « SWT « Java Tutorial

1. Java Tutorial
2. SWT
3. StyledText Style

import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.ExtendedModifyEvent;
import org.eclipse.swt.custom.ExtendedModifyListener;
import org.eclipse.swt.custom.StyleRange;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class SyntaxColoring {
  public static void main(String[] args) {
    final Display display = new Display();
    final Shell shell = new Shell(display);

    final StyledText styledText = new StyledText(shell, SWT.V_SCROLL | SWT.BORDER);

    final String PUNCTUATION = "(){}";
    styledText.addExtendedModifyListener(new ExtendedModifyListener() {
      public void modifyText(ExtendedModifyEvent event) {
        int end = event.start + event.length - 1;

        if (event.start <= end) {
          String text = styledText.getText(event.start, end);
          java.util.List ranges = new java.util.ArrayList();

          for (int i = 0, n = text.length(); i < n; i++) {
            if (PUNCTUATION.indexOf(text.charAt(i)) > -1) {
              ranges.add(new StyleRange(event.start + i, 1, display.getSystemColor(SWT.COLOR_BLUE),
                  null, SWT.BOLD));
            }
          }
          if (!ranges.isEmpty()) {
            styledText.replaceStyleRanges(event.start, event.length, (StyleRange[]) ranges
                .toArray(new StyleRange[0]));
          }
        }
      }
    });

    styledText.setBounds(10, 10, 500, 100);
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        display.sleep();
      }
    }
    display.dispose();
  }
}

17.43.StyledText Style
	17.43.1.	Using StyleRanges
	17.43.2.	StyleRange Constructors
	17.43.3.	Compare StyleRange
	17.43.4.	Set a single StyleRange into a StyledText
	17.43.5.	Set two Different styles
	17.43.6.	Store StyleRanges into an array, and called setStyleRanges()
	17.43.7.	replaceStyleRanges(): specifies which portion of the StyledText to repaint
	17.43.8.	Dynamic syntax coloring
	17.43.9.	Make Text Bold
	17.43.10.	Make text appear underlined
	17.43.11.	Use rise and font with StyleRange
	17.43.12.	Change the background
	17.43.13.	Change the Foreground color
	17.43.14.	Make text appear strikeout
	17.43.15.	StyledText: set line background
	17.43.16.	Using LineBackgroundListener