/*
* ALMA - Atacama Large Millimiter Array
* (c) European Southern Observatory, 2002
* Copyright by ESO (in the framework of the ALMA collaboration)
* and Cosylab 2002, All rights reserved
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
package alma.acs.gui.loglevel.leveldlg;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import javax.swing.AbstractButton;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.plaf.basic.BasicButtonUI;
import alma.acs.gui.loglevel.LogLevelPanel;
import alma.acs.gui.loglevel.LogPaneNotFoundException;
/**
* Component to be used as tabComponent;
* Contains a JLabel to show the text and
* a JButton to close the tab it belongs to
*/
@SuppressWarnings("serial")
public class ButtonTabComponent extends JPanel {
private static final long serialVersionUID = -7111655172215857672L;
// The tabbed pane
private final LogLevelPanel pane;
// The name of this tab
private final LogLevelSelectorPanel selectorPane;
public ButtonTabComponent(final LogLevelPanel pane, LogLevelSelectorPanel selPane) {
//unset default FlowLayout' gaps
super(new FlowLayout(FlowLayout.LEFT, 0, 0));
if (pane == null) {
throw new NullPointerException("TabbedPane is null");
}
if (selPane== null) {
throw new NullPointerException("LogLevelSelectorPanel is null");
}
this.pane = pane;
this.selectorPane=selPane;
setOpaque(false);
//make JLabel read titles from JTabbedPane
JLabel label = new JLabel() {
public String getText() {
int i = pane.indexOfTabComponent(ButtonTabComponent.this);
if (i != -1) {
return pane.getTitleAt(i);
}
return null;
}
};
add(label);
//add more space between the label and the button
label.setBorder(BorderFactory.createEmptyBorder(0, 0, 0, 5));
//tab button
JButton button = new TabButton();
add(button);
//add more space to the top of the component
setBorder(BorderFactory.createEmptyBorder(2, 0, 0, 0));
}
private class TabButton extends JButton implements ActionListener {
public TabButton() {
int size = 17;
setPreferredSize(new Dimension(size, size));
setToolTipText("close this tab");
//Make the button looks the same for all Laf's
setUI(new BasicButtonUI());
//Make it transparent
setContentAreaFilled(false);
//No need to be focusable
setFocusable(false);
setBorder(BorderFactory.createEtchedBorder());
setBorderPainted(false);
//Making nice rollover effect
//we use the same listener for all buttons
addMouseListener(buttonMouseListener);
setRolloverEnabled(true);
//Close the proper tab by clicking the button
addActionListener(this);
}
/**
* NOTE: there is only one source that can generate events: the button
*
* @see java.awt.event.ActionListener
*/
public void actionPerformed(ActionEvent e) {
if (selectorPane.userChangedLogLevels()) {
if (JOptionPane.showConfirmDialog(
null,
"Do you really want to discard changes?",
"Confirm",
JOptionPane.YES_NO_OPTION)==JOptionPane.NO_OPTION) {
return;
}
}
try {
pane.removeLogSelectorTab(selectorPane.getName());
} catch (LogPaneNotFoundException ex) {
System.err.println("Log panel not found: "+selectorPane.getName());
int i = pane.indexOfTabComponent(ButtonTabComponent.this);
if (i != -1) {
pane.remove(i);
System.err.println("Error recovered: tab "+selectorPane.getName()+" removed");
} else {
System.err.println("Impossible to remove tab named: "+selectorPane.getName());
}
}
}
//we don't want to update UI for this button
public void updateUI() {
}
//paint the cross
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2 = (Graphics2D) g.create();
//shift the image for pressed buttons
if (getModel().isPressed()) {
g2.translate(1, 1);
}
g2.setStroke(new BasicStroke(2));
g2.setColor(Color.BLACK);
if (getModel().isRollover()) {
g2.setColor(Color.MAGENTA);
}
int delta = 6;
g2.drawLine(delta, delta, getWidth() - delta - 1, getHeight() - delta - 1);
g2.drawLine(getWidth() - delta - 1, delta, delta, getHeight() - delta - 1);
g2.dispose();
}
}
private final static MouseListener buttonMouseListener = new MouseAdapter() {
public void mouseEntered(MouseEvent e) {
Component component = e.getComponent();
if (component instanceof AbstractButton) {
AbstractButton button = (AbstractButton) component;
button.setBorderPainted(true);
}
}
public void mouseExited(MouseEvent e) {
Component component = e.getComponent();
if (component instanceof AbstractButton) {
AbstractButton button = (AbstractButton) component;
button.setBorderPainted(false);
}
}
};
}