/**
* Copyright (c) 2013, Institute of Information Systems (Sven Groppe and contributors of LUPOSDATE), University of Luebeck
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
* following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice, this list of conditions and the following
* disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other materials provided with the distribution.
* - Neither the name of the University of Luebeck nor the names of its contributors may be used to endorse or promote
* products derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package lupos.gui.operatorgraph.visualeditor.util;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;
import java.util.concurrent.locks.ReentrantLock;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
import javax.swing.event.CaretEvent;
import javax.swing.event.CaretListener;
import lupos.gui.operatorgraph.AbstractSuperGuiComponent;
public class JTextFieldResizing extends JTextField {
private static final long serialVersionUID = 9125138588941985739L;
private static volatile boolean ignoreFocus = false;
private static ReentrantLock lock = new ReentrantLock();
/**
* maximal width of this text field
*/
public static int MAX_SIZE_TEXTFIELD = 20;
public JTextFieldResizing(final String text, final Font font,
final AbstractSuperGuiComponent holder) {
super(text);
this.setCaretPosition(0);
this.setFont(font);
final Dimension d = this.calculateSize(font);
this.setPreferredSize(d);
this.setMinimumSize(d);
this.setSize(d);
this.setToolTipText(text);
this.addCaretListener(
new CaretListener(){
@Override
public void caretUpdate(CaretEvent e) {
setToolTipText(getText());
}
});
this.addFocusListener(new FocusListener() {
public void focusGained(final FocusEvent fe) {
}
public void focusLost(final FocusEvent fe) {
lock.lock();
try {
if (!ignoreFocus) {
ignoreFocus = true;
final Dimension d = calculateSize();
setPreferredSize(d);
setMinimumSize(d);
setSize(d);
holder.updateSize();
if (fe.getOppositeComponent() != null) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
fe.getOppositeComponent()
.requestFocus();
SwingUtilities
.invokeLater(new Runnable() {
public void run() {
ignoreFocus = false;
}
});
}
});
}
});
} else {
ignoreFocus = false;
}
}
} finally {
lock.unlock();
}
}
});
}
private String getPlaceholderString() {
String placeholder = getText();
for (int i = placeholder.length(); i < 3; i++) {
placeholder += " ";
}
if(placeholder.length()>JTextFieldResizing.MAX_SIZE_TEXTFIELD){
placeholder = placeholder.substring(0, JTextFieldResizing.MAX_SIZE_TEXTFIELD);
}
return placeholder + " ";
}
public Dimension calculateSize() {
return this.calculateSize(getFont());
}
public Dimension calculateSize(final Font font) {
final FontMetrics fm = getFontMetrics(font);
final String placeholder = getPlaceholderString();
return new Dimension(fm.stringWidth(placeholder), fm.getHeight());
}
public String toString() {
return this.getText();
}
}