/*
* Copyright 2011 gitblit.com.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.gitblit.client;
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.Stroke;
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.ImageIcon;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTabbedPane;
import javax.swing.plaf.basic.BasicButtonUI;
/**
* Closable tab control.
*/
public class ClosableTabComponent extends JPanel {
private static final long serialVersionUID = 1L;
private static final MouseListener BUTTON_MOUSE_LISTENER = new MouseAdapter() {
@Override
public void mouseEntered(MouseEvent e) {
Component component = e.getComponent();
if (component instanceof AbstractButton) {
AbstractButton button = (AbstractButton) component;
button.setBorderPainted(true);
}
}
@Override
public void mouseExited(MouseEvent e) {
Component component = e.getComponent();
if (component instanceof AbstractButton) {
AbstractButton button = (AbstractButton) component;
button.setBorderPainted(false);
}
}
};
private final JTabbedPane pane;
private final JLabel label;
private final JButton button = new TabButton();
private final CloseTabListener closeListener;
public interface CloseTabListener {
void closeTab(Component c);
}
public ClosableTabComponent(String title, ImageIcon icon, JTabbedPane pane,
CloseTabListener closeListener) {
super(new FlowLayout(FlowLayout.LEFT, 0, 0));
this.closeListener = closeListener;
if (pane == null) {
throw new NullPointerException("TabbedPane is null");
}
this.pane = pane;
setOpaque(false);
label = new JLabel(title);
if (icon != null) {
label.setIcon(icon);
}
add(label);
label.setBorder(BorderFactory.createEmptyBorder(0, 0, 0, 5));
add(button);
setBorder(BorderFactory.createEmptyBorder(2, 0, 0, 0));
}
private class TabButton extends JButton implements ActionListener {
private static final long serialVersionUID = 1L;
public TabButton() {
int size = 17;
setPreferredSize(new Dimension(size, size));
setToolTipText("Close");
setUI(new BasicButtonUI());
setContentAreaFilled(false);
setFocusable(false);
setBorder(BorderFactory.createEtchedBorder());
setBorderPainted(false);
addMouseListener(BUTTON_MOUSE_LISTENER);
setRolloverEnabled(true);
addActionListener(this);
}
@Override
public void actionPerformed(ActionEvent e) {
int i = pane.indexOfTabComponent(ClosableTabComponent.this);
Component c = pane.getComponentAt(i);
if (i != -1) {
pane.remove(i);
}
if (closeListener != null) {
closeListener.closeTab(c);
}
}
@Override
public void updateUI() {
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2 = (Graphics2D) g;
Stroke stroke = g2.getStroke();
g2.setStroke(new BasicStroke(2));
g.setColor(Color.BLACK);
if (getModel().isRollover()) {
Color highlight = new Color(0, 51, 153);
g.setColor(highlight);
}
int delta = 5;
g.drawLine(delta, delta, getWidth() - delta - 1, getHeight() - delta - 1);
g.drawLine(getWidth() - delta - 1, delta, delta, getHeight() - delta - 1);
g2.setStroke(stroke);
int i = pane.indexOfTabComponent(ClosableTabComponent.this);
pane.setTitleAt(i, label.getText());
}
}
}