Example usage for javax.swing.text JTextComponent getCaret

Introduction

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

Prototype

@Transient
public Caret getCaret() 

Source Link

Document

Fetches the caret that allows text-oriented navigation over the view.

Usage

From source file:Main.java

public static void main(String[] argv) {
    JTextComponent c = new JTextArea();

    // Set rate to blink once a second
    c.getCaret().setBlinkRate(1000);

    // Set the caret to stop blinking
    c.getCaret().setBlinkRate(0);/* ww  w  .j a  v  a2s  . co  m*/
}

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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
 *//*w  w  w.j  ava  2 s  . c om*/
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:Main.java

public void highLight(JTextComponent component, String patteren) {
    try {/*from w w  w  .java 2 s.  co 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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From source file:FormattedTextFieldExample.java

protected void drawLine(int line, Graphics g, int x, int y) {
    // Set the colors
    JTextComponent host = (JTextComponent) getContainer();
    unselected = (host.isEnabled()) ? host.getForeground() : host.getDisabledTextColor();
    Caret c = host.getCaret();
    selected = c.isSelectionVisible() ? host.getSelectedTextColor() : unselected;

    int p0 = element.getStartOffset();
    int p1 = element.getEndOffset() - 1;
    int sel0 = ((JTextComponent) getContainer()).getSelectionStart();
    int sel1 = ((JTextComponent) getContainer()).getSelectionEnd();

    try {//from  w  w  w  .j ava2  s.  c  om
        // If the element is empty or there is no selection
        // in this view, just draw the whole thing in one go.
        if (p0 == p1 || sel0 == sel1 || inView(p0, p1, sel0, sel1) == false) {
            drawUnselectedText(g, x, y, 0, contentBuff.count);
            return;
        }

        // There is a selection in this view. Draw up to three regions:
        //   (a) The unselected region before the selection.
        //   (b) The selected region.
        //   (c) The unselected region after the selection.
        // First, map the selected region offsets to be relative
        // to the start of the region and then map them to view
        // offsets so that they take into account characters not
        // present in the model.
        int mappedSel0 = mapOffset(Math.max(sel0 - p0, 0));
        int mappedSel1 = mapOffset(Math.min(sel1 - p0, p1 - p0));

        if (mappedSel0 > 0) {
            // Draw an initial unselected region
            x = drawUnselectedText(g, x, y, 0, mappedSel0);
        }
        x = drawSelectedText(g, x, y, mappedSel0, mappedSel1);

        if (mappedSel1 < contentBuff.count) {
            drawUnselectedText(g, x, y, mappedSel1, contentBuff.count);
        }
    } catch (BadLocationException e) {
        // Should not happen!
    }
}

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From source file:com.hexidec.ekit.component.RelativeImageView.java

/** Select or grow image when clicked.
  *///www.j a v a  2 s. c  o  m
public void mousePressed(MouseEvent e) {
    Dimension size = fComponent.getSize();
    if ((e.getX() >= (size.width - 7)) && (e.getY() >= (size.height - 7)) && (getSelectionState() == 2)) {
        // Click in selected grow-box:
        Point loc = fComponent.getLocationOnScreen();
        fGrowBase = new Point(loc.x + e.getX() - fWidth, loc.y + e.getY() - fHeight);
        fGrowProportionally = e.isShiftDown();
    } else {
        // Else select image:
        fGrowBase = null;
        JTextComponent comp = (JTextComponent) fContainer;
        int start = fElement.getStartOffset();
        int end = fElement.getEndOffset();
        int mark = comp.getCaret().getMark();
        int dot = comp.getCaret().getDot();
        if (e.isShiftDown()) {
            // extend selection if shift key down:
            if (mark <= start) {
                comp.moveCaretPosition(end);
            } else {
                comp.moveCaretPosition(start);
            }
        } else {
            // just select image, without shift:
            if (mark != start) {
                comp.setCaretPosition(start);
            }
            if (dot != end) {
                comp.moveCaretPosition(end);
            }
        }
    }
}

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From source file:org.executequery.gui.editor.autocomplete.QueryEditorAutoCompletePopupProvider.java

public void firePopupTrigger() {

    try {/*www .  ja va  2s  . c  o  m*/

        final JTextComponent textComponent = queryEditorTextComponent();

        Caret caret = textComponent.getCaret();
        final Rectangle caretCoords = textComponent.modelToView(caret.getDot());

        addFocusActions();

        resetCount = 0;
        captureAndResetListValues();

        popupMenu().show(textComponent, caretCoords.x, caretCoords.y + caretCoords.height);
        textComponent.requestFocus();

    } catch (BadLocationException e) {

        debug("Error on caret coordinates", e);
    }

}

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From source file:org.pmedv.core.components.RelativeImageView.java

/**
 * Select or grow image when clicked.//from  w w  w.  j a v  a  2s.c  om
 * 
 * @param e
 *            MouseEvent to handle
 */
public void mousePressed(MouseEvent e) {

    Dimension size = fComponent.getSize();
    if ((e.getX() >= (size.width - 7)) && (e.getY() >= (size.height - 7)) && (getSelectionState() == 2)) {
        Point loc = fComponent.getLocationOnScreen();
        fGrowBase = new Point(loc.x + e.getX() - fWidth, loc.y + e.getY() - fHeight);
        fGrowProportionally = e.isShiftDown();
    } else {
        fGrowBase = null;
        JTextComponent comp = (JTextComponent) fContainer;
        int start = fElement.getStartOffset();
        int end = fElement.getEndOffset();
        int mark = comp.getCaret().getMark();
        int dot = comp.getCaret().getDot();
        if (e.isShiftDown()) {

            if (mark <= start) {
                comp.moveCaretPosition(end);
            } else {
                comp.moveCaretPosition(start);
            }
        } else {
            if (mark != start) {
                comp.setCaretPosition(start);
            }
            if (dot != end) {
                comp.moveCaretPosition(end);
            }
        }
    }
}

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