Examples of javax.swing.text.Highlighter.addHighlight()

javax.swing.text.Highlighter.addHighlight()
Adds a highlight to the view. Returns a tag that can be used to refer to the highlight. @param p0 the beginning of the range >= 0 @param p1 the end of the range >= p0 @param p the painter to use for the actual highlighting @return an object that refers to the highlight @exception BadLocationException for an invalid range specification

        }


        private void highlight(int offset, HighlightPainter painter) {
            try {
                Highlighter hl = textComponent.getHighlighter();
                Object tag = hl.addHighlight(offset, offset + 1, painter);
                highlights.add(tag);
            }
            catch (BadLocationException ex) {
                // Nothing to do
            }

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        Pattern p = Pattern.compile(pattern, flags);
        Matcher m = p.matcher(content);
        while (m.find()) {
            for (int i=(m.groupCount()>0?1:0); i<=m.groupCount(); i++) {
                try {
                    highlighter.addHighlight(m.start(i), m.end(i), matchPainter);
                } catch (BadLocationException e) {}
            }
        }
    }

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        } else {
            if (previous != current) 
                try {
                    if (current != null) {
                        highlighter.removeHighlight(current);
                        highlighter.addHighlight(current.getStartOffset(), current.getEndOffset(), matchPainter);
                    }
                    highlighter.removeHighlight(previous);
                    highlighter.addHighlight(previous.getStartOffset(), previous.getEndOffset(), selectionPainter);
                    center(previous);
                } catch (BadLocationException ble) {

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                    if (current != null) {
                        highlighter.removeHighlight(current);
                        highlighter.addHighlight(current.getStartOffset(), current.getEndOffset(), matchPainter);
                    }
                    highlighter.removeHighlight(previous);
                    highlighter.addHighlight(previous.getStartOffset(), previous.getEndOffset(), selectionPainter);
                    center(previous);
                } catch (BadLocationException ble) {
                    // impossible
                }
            pos = previous.getStartOffset();

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        } else {
            if (next != current) 
                try {
                    if (current != null) {
                        highlighter.removeHighlight(current);
                        highlighter.addHighlight(current.getStartOffset(), current.getEndOffset(), matchPainter);
                    }
                    highlighter.removeHighlight(next);
                    highlighter.addHighlight(next.getStartOffset(), next.getEndOffset(), selectionPainter);
                    center(next);
                } catch (BadLocationException ble) {

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                    if (current != null) {
                        highlighter.removeHighlight(current);
                        highlighter.addHighlight(current.getStartOffset(), current.getEndOffset(), matchPainter);
                    }
                    highlighter.removeHighlight(next);
                    highlighter.addHighlight(next.getStartOffset(), next.getEndOffset(), selectionPainter);
                    center(next);
                } catch (BadLocationException ble) {
                    // impossible
                }
            pos = next.getStartOffset();

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    codeEditor.setEditable(false);


    Highlighter hl = codeEditor.getHighlighter();
    Object o = null;
    try {
      o = hl.addHighlight(0, 0, CURRENT_LINE_MARKER);
    } catch (BadLocationException e1) {
    }
    currentLineTag = o;


    o = null;

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    }
    currentLineTag = o;


    o = null;
    try {
      o = hl.addHighlight(0, 0, SELECTED_LINE_MARKER);
    } catch (BadLocationException e1) {
    }
    selectedLineTag = o;


    codeEditor.getComponentPopupMenu().addPopupMenuListener(new PopupMenuListener() {

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      }


      final int start = codeEditorLines.get(w.getLineNumber());
      int end = codeEditorLines.get(w.getLineNumber()+1);
      try {
        breakpointsLineTags.add(hl.addHighlight(start, end, BREAKPOINTS_MARKER));
      } catch (BadLocationException e1) {
      }
    }
  }

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