Example usage for javax.swing.text JTextComponent getText

Introduction

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

Prototype

public String getText() 

Source Link

Document

Returns the text contained in this TextComponent.

Usage

From source file:Main.java

/**
 * Cuts via the fake clipboard.//from  w w w .  j a va2  s . c om
 */

static void fakeCut(JTextComponent tc) {
    String selection = tc.getSelectedText();
    if ((selection != null) && (selection.length() > 0)) {
        clipboard = selection;

        String text = tc.getText();
        int selectionStart = tc.getSelectionStart();
        int selectionEnd = tc.getSelectionEnd();

        tc.setText(text.substring(0, selectionStart) + text.substring(selectionEnd));
        tc.setCaretPosition(selectionStart);
    }
}

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From source file:Main.java

/**
 * Set the text component in which only numerics (positive decimal integers
 * with character 0-9)./*w ww .ja  va  2s .c om*/
 * 
 * @param c
 *            the specified text component
 */
public static void setTextComponetIntegerValid(final JTextComponent c) {
    c.addKeyListener(new KeyAdapter() {
        @Override
        public void keyTyped(KeyEvent e) {
            if (e.getKeyChar() != KeyEvent.VK_BACK_SPACE)
                try {
                    Integer.valueOf(c.getText() + e.getKeyChar());
                } catch (NumberFormatException nfe) {
                    e.consume();
                    Toolkit.getDefaultToolkit().beep();
                }
        }
    });
}

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From source file:Main.java

/**
 * Returns the {@link Dimension} for the given {@link JTextComponent}
 * subclass that will show the whole word wrapped text in the given width.
 * It won't work for styled text of varied size or style, it's assumed that
 * the whole text is rendered with the {@link JTextComponent}s font.
 *
 * @param textComponent the {@link JTextComponent} to calculate the {@link Dimension} for
 * @param width the width of the resulting {@link Dimension}
 * @param text the {@link String} which should be word wrapped
 * @return The calculated {@link Dimension}
 *//* ww w  .j  a  v a  2  s  . c o m*/
public static Dimension getWordWrappedTextDimension(JTextComponent textComponent, int width, String text) {
    if (textComponent == null) {
        throw new IllegalArgumentException("textComponent cannot be null");
    }
    if (width < 1) {
        throw new IllegalArgumentException("width must be 1 or greater");
    }
    if (text == null) {
        text = textComponent.getText();
    }
    if (text.isEmpty()) {
        return new Dimension(width, 0);
    }

    FontMetrics metrics = textComponent.getFontMetrics(textComponent.getFont());
    FontRenderContext rendererContext = metrics.getFontRenderContext();
    float formatWidth = width - textComponent.getInsets().left - textComponent.getInsets().right;

    int lines = 0;
    String[] paragraphs = text.split("\n");
    for (String paragraph : paragraphs) {
        if (paragraph.isEmpty()) {
            lines++;
        } else {
            AttributedString attributedText = new AttributedString(paragraph);
            attributedText.addAttribute(TextAttribute.FONT, textComponent.getFont());
            AttributedCharacterIterator charIterator = attributedText.getIterator();
            LineBreakMeasurer lineMeasurer = new LineBreakMeasurer(charIterator, rendererContext);

            lineMeasurer.setPosition(charIterator.getBeginIndex());
            while (lineMeasurer.getPosition() < charIterator.getEndIndex()) {
                lineMeasurer.nextLayout(formatWidth);
                lines++;
            }
        }
    }

    return new Dimension(width,
            metrics.getHeight() * lines + textComponent.getInsets().top + textComponent.getInsets().bottom);
}

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

public static void highlightText(JTextComponent component, String s) {
    try {/*from w  w w  .j  a  v a2s .c om*/
        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.keyboard.EmacsKeyBindings.java

private static int getWordEnd(JTextComponent jtc, int start) throws BadLocationException {
    try {/*from ww  w .jav a2 s .c o m*/
        return Utilities.getNextWord(jtc, start);
    } catch (BadLocationException ble) {
        int end = jtc.getText().length();
        if (start < end) {
            return end;
        } else {
            throw ble;
        }
    }
}

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From source file:Main.java

public void focusGained(FocusEvent evt) {
    final JTextComponent c = (JTextComponent) evt.getSource();
    String s = c.getText();

    for (int i = 0; i < s.length(); i++) {
        if (!Character.isDigit(s.charAt(i))) {
            c.setSelectionStart(i);/*w  w  w . j  a v  a 2s.com*/
            c.setSelectionEnd(i);
            break;
        }
    }
}

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From source file:Main.java

public void focusLost(FocusEvent evt) {
    final JTextComponent c = (JTextComponent) evt.getSource();
    String s = c.getText();

    if (evt.isTemporary()) {
        return;/*  ww w  .  j  a v a  2  s .co  m*/
    }
    for (int i = 0; i < s.length(); i++) {
        if (!Character.isDigit(s.charAt(i))) {
            System.out.println("must only contain digits");
            c.requestFocus();
            break;
        }
    }
}

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From source file:com.intel.stl.ui.common.view.ComponentFactory.java

public static SafeNumberField<Integer> createNumericTextField(Integer max, DocumentListener... docListeners) {
    final SafeNumberField<Integer> field = new SafeNumberField<Integer>(new DecimalFormat("###"), 0, false, max,
            false);/*from w w  w. j a  v a 2s  .  com*/
    // only positive integer
    field.setValidChars(UIConstants.DIGITS);
    if (docListeners != null) {
        for (DocumentListener docListener : docListeners) {
            field.getDocument().addDocumentListener(docListener);
        }
    }

    // Add a mouse listener to clear out the field before the user types
    field.addMouseListener(new MouseAdapter() {

        @Override
        public void mouseClicked(MouseEvent e) {

            try {
                JTextComponent tc = (JTextComponent) e.getSource();
                String txt = tc.getText();
                if (!txt.isEmpty()) {
                    field.getFormatter().stringToValue(txt);
                }
            } catch (Exception ex) {
                field.setText("");
            }
        }
    });

    return field;
}

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From source file:de.codesourcery.eve.skills.ui.utils.IntTextFieldValidator.java

protected void attachFilter(JTextComponent comp) {

    // Casting is bad although seems to be 
    // the 'official way' as it's in the Swing tutorials as well....
    final AbstractDocument doc = (AbstractDocument) comp.getDocument();

    final String val = comp.getText();
    if (!isInteger(val) || !isWithinRange(val)) {
        comp.setText(Integer.toString(minValue));
    }//from  w w w . jav a 2 s.c o  m
    doc.setDocumentFilter(filter);
}

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From source file:net.sf.jabref.gui.AutoCompleteListener.java

public void clearCurrentSuggestion(JTextComponent comp) {
    if (toSetIn != null) {
        int selStart = comp.getSelectionStart();
        String text = comp.getText();
        comp.setText(text.substring(0, selStart) + text.substring(comp.getSelectionEnd()));
        comp.setCaretPosition(selStart);
        lastCompletions = null;//from w  ww  . ja  v  a  2s  .c  o  m
        lastShownCompletion = 0;
        lastCaretPosition = -1;
        toSetIn = null;
    }
}

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