Using LineBackgroundListener : StyledText Style « SWT « Java Tutorial

LineBackgroundEvent Fields

Field	Description
int lineOffset	The zero-based offset, relative to the whole text, of the line the StyledText needs background color information for. Note: this is the character offset, not the line number.
String lineText	The text of the line the StyledText needs background color information for.
Color lineBackground	The field that holds the color you set. The StyledText uses this field to set the background color for the line.

import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.LineBackgroundEvent;
import org.eclipse.swt.custom.LineBackgroundListener;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class StyledTextLineBackgroundListener {
  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);
    styledText.setText("\n1234\n124\n\1234\n12314\n\1241234\n");

    styledText.addLineBackgroundListener(new LineBackgroundListener() {

      public void lineGetBackground(LineBackgroundEvent event) {
        if (event.lineText.indexOf("SWT") > -1) {
          event.lineBackground = Display.getCurrent().getSystemColor(SWT.COLOR_BLUE);
        }

      }
    });

    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