Example usage for javax.swing.text JTextComponent getCaretPosition

Introduction

In this page you can find the example usage for javax.swing.text JTextComponent getCaretPosition.

Prototype

@Transient
public int getCaretPosition() 

Source Link

Document

Returns the position of the text insertion caret for the text component.

Usage

From source file:Main.java

public static void main(String[] argv) throws Exception {
    JTextComponent c = new JTextArea();
    c.getCaretPosition();
    if (c.getCaretPosition() < c.getDocument().getLength()) {
        char ch = c.getText(c.getCaretPosition(), 1).charAt(0);
    }/*from w w  w  .  ja  v a 2s . c o m*/
    // Set the caret color
    c.setCaretColor(Color.red);
}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    JTextComponent c = new JTextArea();
    c.getCaretPosition();
    if (c.getCaretPosition() < c.getDocument().getLength()) {
        char ch = c.getText(c.getCaretPosition(), 1).charAt(0);
    }// ww w .  ja v a  2 s  . c  o  m
    // Move the caret
    int newPosition = 0;
    c.moveCaretPosition(newPosition);
}

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From source file:Main.java

public static void refreshJTextComponent(JTextComponent textComponent) {
    // borrowed from metaphase editor
    int pos = textComponent.getCaretPosition();
    textComponent.setText(textComponent.getText());
    textComponent.validate();//from  ww  w . j a va  2s. c om
    try {
        textComponent.setCaretPosition(pos);
    } catch (IllegalArgumentException e) {
        // swallow the exception
        // seems like a bug in the JTextPane component
        // only happens occasionally when pasting text at the end of a document
        System.err.println(e.getMessage());
    }
}

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From source file:Main.java

/**
 * Pastes via the fake clipboard./*  www. j av a2  s .c o  m*/
 */

static void fakePaste(JTextComponent tc) {
    String text = tc.getText();
    int caretPos = tc.getCaretPosition();

    tc.setText(text.substring(0, caretPos) + clipboard + text.substring(caretPos));
    tc.setCaretPosition(caretPos + clipboard.length());
}

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From source file:Main.java

/**
 * sets text of textComp without moving its caret.
 *
 * @param textComp  text component whose text needs to be set
 * @param text      text to be set. null will be treated as empty string
 *//*from   w w w .ja  v  a 2  s .c  o  m*/
public static void setText(JTextComponent textComp, String text) {
    if (text == null)
        text = "";

    if (textComp.getCaret() instanceof DefaultCaret) {
        DefaultCaret caret = (DefaultCaret) textComp.getCaret();
        int updatePolicy = caret.getUpdatePolicy();
        caret.setUpdatePolicy(DefaultCaret.NEVER_UPDATE);
        try {
            textComp.setText(text);
        } finally {
            caret.setUpdatePolicy(updatePolicy);
        }
    } else {
        int mark = textComp.getCaret().getMark();
        int dot = textComp.getCaretPosition();
        try {
            textComp.setText(text);
        } finally {
            int len = textComp.getDocument().getLength();
            if (mark > len)
                mark = len;
            if (dot > len)
                dot = len;
            textComp.setCaretPosition(mark);
            if (dot != mark)
                textComp.moveCaretPosition(dot);
        }
    }
}

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From source file:net.sf.jabref.gui.keyboard.EmacsKeyBindings.java

private static void doCopyOrCut(JTextComponent jtc, boolean copy) {
    if (jtc != null) {
        int caretPosition = jtc.getCaretPosition();
        String text = jtc.getSelectedText();
        if (text != null) {
            // user has manually marked a text without using CTRL+W
            // we obey that selection and copy it.
        } else if (SetMarkCommandAction.isMarked(jtc)) {
            int beginPos = caretPosition;
            int endPos = SetMarkCommandAction.getCaretPosition();
            if (beginPos > endPos) {
                int tmp = endPos;
                endPos = beginPos;//w  w w . j  av  a 2 s .co m
                beginPos = tmp;
            }
            jtc.select(beginPos, endPos);
            SetMarkCommandAction.reset();
        }
        text = jtc.getSelectedText();
        if (text == null) {
            jtc.getToolkit().beep();
        } else {
            if (copy) {
                jtc.copy();
                // clear the selection
                jtc.select(caretPosition, caretPosition);
            } else {
                int newCaretPos = jtc.getSelectionStart();
                jtc.cut();
                // put the cursor to the beginning of the text to cut
                jtc.setCaretPosition(newCaretPos);
            }
            KillRing.getInstance().add(text);
        }
    }
}

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From source file:InsertAction.java

public void actionPerformed(ActionEvent evt) {
    JTextComponent c = (JTextComponent) evt.getSource();

    try {//from  w ww  .  j a va  2  s .  c  o m
        c.getDocument().insertString(c.getCaretPosition(), " space", null);
    } catch (BadLocationException e) {
    }
}

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From source file:Main.java

public void actionPerformed(ActionEvent evt) {
    JTextComponent c = (JTextComponent) evt.getSource();

    try {//from w w  w. j  av a 2  s  . com
        c.getDocument().insertString(c.getCaretPosition(), " ", null);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

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From source file:MyKeyListener.java

public void keyTyped(KeyEvent evt) {
    JTextComponent c = (JTextComponent) evt.getSource();
    char ch = evt.getKeyChar();

    if (Character.isLowerCase(ch) == false) {
        return;/*from  w  w w  .  j a  v  a 2  s.co m*/
    }
    try {
        c.getDocument().insertString(c.getCaretPosition(), "" + Character.toUpperCase(ch), null);
        evt.consume();
    } catch (BadLocationException e) {
    }
}

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From source file:Main.java

public void highLight(JTextComponent component, String patteren) {
    try {/*www.  jav a2  s.c  o  m*/
        Document doc = component.getDocument();
        String text = component.getText(0, doc.getLength());
        int pos = component.getCaretPosition();
        if (pos == doc.getLength()) {
            pos = 0;
        }
        int index = text.toUpperCase().indexOf(patteren.toUpperCase(), pos);
        if (index >= 0) {
            component.setSelectionStart(index);
            component.setSelectionEnd(index + patteren.length());
            component.getCaret().setSelectionVisible(true);
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}

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