Example usage for javax.swing.text Highlighter addHighlight

Introduction

In this page you can find the example usage for javax.swing.text Highlighter addHighlight.

Prototype

public Object addHighlight(int p0, int p1, HighlightPainter p) throws BadLocationException;

Source Link

Document

Adds a highlight to the view.

Usage

From source file:Main.java

public static void main(String args[]) throws Exception {
    JFrame frame = new JFrame("MultiHighlight");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JTextArea comp = new JTextArea(5, 20);
    comp.setText("this is a test");
    frame.getContentPane().add(new JScrollPane(comp), BorderLayout.CENTER);

    String charsToHighlight = "a";
    Highlighter h = comp.getHighlighter();
    h.removeAllHighlights();//from  w  w  w  . j av a2 s .  co  m
    String text = comp.getText().toUpperCase();

    for (int j = 0; j < text.length(); j += 1) {
        char ch = text.charAt(j);
        if (charsToHighlight.indexOf(ch) >= 0)
            h.addHighlight(j, j + 1, DefaultHighlighter.DefaultPainter);
    }
    frame.pack();
    frame.setVisible(true);
}

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From source file:Main.java

public static void main(String args[]) {
    JTextArea area = new JTextArea(5, 20);
    area.setText("this is a test.");
    String charsToHighlight = "aeiouAEIOU";
    Highlighter h = area.getHighlighter();
    h.removeAllHighlights();/* w  w  w .j  a v a 2  s. c  om*/
    String text = area.getText().toUpperCase();
    for (int i = 0; i < text.length(); i += 1) {
        char ch = text.charAt(i);
        if (charsToHighlight.indexOf(ch) >= 0)
            try {
                h.addHighlight(i, i + 1, DefaultHighlighter.DefaultPainter);
            } catch (Exception ble) {
            }
    }
}

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From source file:Main.java

public static void highlight(JTextComponent textComp) {
    try {/*from  ww  w  .j a va2 s. co  m*/
        Highlighter hilite = textComp.getHighlighter();
        Document doc = textComp.getDocument();
        hilite.addHighlight(3, 5, new MyHighlightPainter(Color.red));
    } catch (BadLocationException e) {
        e.printStackTrace();
    }
}

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From source file:Main.java

public static void highlight(JTextComponent textComp, String pattern) throws Exception {
    removeHighlights(textComp);// w w  w.  j  a  v a2s  .c o m

    Highlighter hilite = textComp.getHighlighter();
    Document doc = textComp.getDocument();
    String text = doc.getText(0, doc.getLength());
    int pos = 0;

    while ((pos = text.indexOf(pattern, pos)) >= 0) {
        hilite.addHighlight(pos, pos + pattern.length(), myHighlightPainter);
        pos += pattern.length();
    }

}

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From source file:Main.java

public Main() {
    JTextArea area = new JTextArea(5, 20);
    area.setText("this is a test.");
    String charsToHighlight = "aeiouAEIOU";
    Highlighter h = area.getHighlighter();
    h.removeAllHighlights();//from  w  w  w .j a v  a  2  s.  c o  m
    String text = area.getText().toUpperCase();
    for (int i = 0; i < text.length(); i += 1) {
        char ch = text.charAt(i);
        if (charsToHighlight.indexOf(ch) >= 0)
            try {
                h.addHighlight(i, i + 1, DefaultHighlighter.DefaultPainter);
            } catch (Exception ble) {
            }
    }
    this.getContentPane().add(area);

}

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From source file:MultiHighlight.java

public void actionPerformed(ActionEvent e) {
    Highlighter h = comp.getHighlighter();
    h.removeAllHighlights();//  w  w  w.j ava2 s .co m
    String text = comp.getText().toUpperCase();

    for (int j = 0; j < text.length(); j += 1) {
        char ch = text.charAt(j);
        if (charsToHighlight.indexOf(ch) >= 0)
            try {
                h.addHighlight(j, j + 1, DefaultHighlighter.DefaultPainter);
            } catch (BadLocationException ble) {
            }
    }
}

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From source file:com.prodigy4440.view.MainJFrame.java

public static void highlightText(JTextComponent component, String s) {
    try {// w ww. java2s .  c o  m
        Highlighter highlighter = component.getHighlighter();
        String text = component.getText();
        String line = null;
        int start = 0;
        int end;
        int totalLines = ((JTextArea) component).getLineCount();
        for (int i = 0; i < totalLines; i++) {
            if (i == 5) {
                start = ((JTextArea) component).getLineOfOffset(i);
                end = ((JTextArea) component).getLineEndOffset(i);
                line = text.substring(start, end);
            }

        }

        int pos = start;
        if ((pos = text.indexOf(s, pos)) >= start) {
            DefaultHighlighter.DefaultHighlightPainter highlightPainter = new DefaultHighlighter.DefaultHighlightPainter(
                    Color.BLUE);
            highlighter.addHighlight(pos, pos + s.length(), highlightPainter);
        }
    } catch (BadLocationException ble) {

    }
}

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From source file:net.sf.jabref.gui.fieldeditors.JTextAreaWithHighlighting.java

/**
 * Highlight words in the Textarea//  www . j  ava 2s .com
 *
 * @param words to highlight
 */
private void highLight() {
    // highlight all characters that appear in charsToHighlight
    Highlighter highlighter = getHighlighter();
    highlighter.removeAllHighlights();

    if ((highlightPattern == null) || !highlightPattern.isPresent()) {
        return;
    }
    String content = getText();
    if (content.isEmpty()) {
        return;
    }

    highlightPattern.ifPresent(pattern -> {
        Matcher matcher = pattern.matcher(content);
        while (matcher.find()) {
            try {
                highlighter.addHighlight(matcher.start(), matcher.end(), DefaultHighlighter.DefaultPainter);
            } catch (BadLocationException ble) {
                // should not occur if matcher works right
                LOGGER.warn("Highlighting not possible, bad location", ble);
            }
        }
    });

}

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From source file:hr.fer.zemris.vhdllab.applets.texteditor.TextEditor.java

@Override
public void highlightLine(int line) {
    int caret = textPane.getCaretPosition();
    Highlighter h = textPane.getHighlighter();
    h.removeAllHighlights();//www  . j av a  2  s.  c om
    String content = textPane.getText();
    textPane.setCaretPosition(caret);

    int pos = 0;
    line--;
    while (line > 0) {
        pos = content.indexOf('\n', pos) + 1;
        line--;
    }
    int last = content.indexOf('\n', pos) + 1;
    if (last == 0) {
        last = content.length();
    }
    try {
        highlighted = h.addHighlight(pos, last,
                new DefaultHighlighter.DefaultHighlightPainter(new Color(180, 210, 238)));
    } catch (BadLocationException e) {
        e.printStackTrace();
        StringWriter sw = new StringWriter();
        PrintWriter pw = new PrintWriter(sw);
        e.printStackTrace(pw);
        JOptionPane.showMessageDialog(null, sw.toString());
    }
}

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From source file:Main.java

public int search(String word) {
    int firstOffset = -1;
    Highlighter highlighter = comp.getHighlighter();
    Highlighter.Highlight[] highlights = highlighter.getHighlights();
    for (int i = 0; i < highlights.length; i++) {
        Highlighter.Highlight h = highlights[i];
        if (h.getPainter() instanceof UnderlineHighlightPainter) {
            highlighter.removeHighlight(h);
        }//from w ww  .j a v a 2s  .com
    }
    if (word == null || word.equals("")) {
        return -1;
    }
    String content = null;
    try {
        Document d = comp.getDocument();
        content = d.getText(0, d.getLength()).toLowerCase();
    } catch (BadLocationException e) {
        return -1;
    }
    word = word.toLowerCase();
    int lastIndex = 0;
    int wordSize = word.length();
    while ((lastIndex = content.indexOf(word, lastIndex)) != -1) {
        int endIndex = lastIndex + wordSize;
        try {
            highlighter.addHighlight(lastIndex, endIndex, painter);
        } catch (BadLocationException e) {
        }
        if (firstOffset == -1) {
            firstOffset = lastIndex;
        }
        lastIndex = endIndex;
    }
    return firstOffset;
}

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