Example usage for org.eclipse.swt.custom StyledText getStyleRangeAtOffset

Introduction

In this page you can find the example usage for org.eclipse.swt.custom StyledText getStyleRangeAtOffset.

Prototype

public StyleRange getStyleRangeAtOffset(int offset) 

Source Link

Document

Returns the style range at the given offset.

Usage

From source file:org.eclipse.swt.snippets.Snippet356.java

public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setText("Snippet 356");
    FillLayout layout = new FillLayout();
    layout.marginHeight = layout.marginWidth = 10;
    shell.setLayout(layout);/*from  w w w.j  a  v a  2  s  .co  m*/

    String string = "This is sample text with a link and some other link here.";
    final StyledText styledText = new StyledText(shell, SWT.MULTI | SWT.BORDER);
    styledText.setText(string);

    String link1 = "link";
    String link2 = "here";
    StyleRange style = new StyleRange();
    style.underline = true;
    style.underlineStyle = SWT.UNDERLINE_LINK;

    int[] ranges = { string.indexOf(link1), link1.length(), string.indexOf(link2), link2.length() };
    StyleRange[] styles = { style, style };
    styledText.setStyleRanges(ranges, styles);

    styledText.addListener(SWT.MouseDown, event -> {
        // It is up to the application to determine when and how a link should be activated.
        // In this snippet links are activated on mouse down when the control key is held down
        if ((event.stateMask & SWT.MOD1) != 0) {
            int offset = styledText.getOffsetAtPoint(new Point(event.x, event.y));
            if (offset != -1) {
                StyleRange style1 = null;
                try {
                    style1 = styledText.getStyleRangeAtOffset(offset);
                } catch (IllegalArgumentException e) {
                    // no character under event.x, event.y
                }
                if (style1 != null && style1.underline && style1.underlineStyle == SWT.UNDERLINE_LINK) {
                    System.out.println("Click on a Link");
                }
            }
        }
    });
    shell.setSize(600, 400);
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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