/*
* RapidMiner
*
* Copyright (C) 2001-2008 by Rapid-I and the contributors
*
* Complete list of developers available at our web site:
*
* http://rapid-i.com
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see http://www.gnu.org/licenses/.
*/
package com.rapidminer.gui.look.ui;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Insets;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.event.InputEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import javax.swing.BoxLayout;
import javax.swing.ComboBoxEditor;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JComponent;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.ListCellRenderer;
import javax.swing.MenuElement;
import javax.swing.MenuSelectionManager;
import javax.swing.UIManager;
import javax.swing.plaf.ComponentUI;
import javax.swing.plaf.basic.BasicComboBoxUI;
import javax.swing.plaf.basic.BasicComboPopup;
import javax.swing.plaf.basic.ComboPopup;
import com.rapidminer.gui.look.RapidLookComboBoxEditor;
import com.rapidminer.gui.look.RapidLookListCellRenderer;
import com.rapidminer.gui.look.borders.Borders;
import com.rapidminer.gui.look.painters.CashedPainter;
/**
* The UI for combo boxes.
*
* @author Ingo Mierswa
* @version $Id: ComboBoxUI.java,v 1.5 2008/05/09 19:22:42 ingomierswa Exp $
*/
public class ComboBoxUI extends BasicComboBoxUI {
private class RapidLookComboPopup extends BasicComboPopup {
private static final long serialVersionUID = 1389744017891652801L;
public RapidLookComboPopup(JComboBox comboBox) {
super(comboBox);
}
@Override
protected void configureScroller() {
this.scroller.setFocusable(false);
this.scroller.getVerticalScrollBar().setFocusable(false);
this.scroller.setBorder(null);
this.scroller.setOpaque(false);
}
@Override
protected void configurePopup() {
setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
setBorderPainted(true);
setBorder(Borders.getPopupBorder());
setOpaque(false);
add(this.scroller);
setDoubleBuffered(true);
setFocusable(false);
}
@Override
protected JList createList() {
return new JList(this.comboBox.getModel()) {
private static final long serialVersionUID = -2467344849011408539L;
@Override
public void processMouseEvent(MouseEvent e) {
if (e.isControlDown()) {
e = new MouseEvent((Component) e.getSource(), e.getID(), e.getWhen(), e.getModifiers() ^ InputEvent.CTRL_MASK, e.getX(), e.getY(), e.getClickCount(), e.isPopupTrigger());
}
super.processMouseEvent(e);
}
};
}
@Override
protected void configureList() {
super.configureList();
this.list.setBackground(Color.white);
}
@Override
public void delegateFocus(MouseEvent e) {
super.delegateFocus(e);
}
@Override
public void hide() {
MenuSelectionManager manager = MenuSelectionManager.defaultManager();
MenuElement[] selection = manager.getSelectedPath();
for (MenuElement element : selection) {
if (element == this) {
manager.clearSelectedPath();
break;
}
}
ComboBoxUI.this.isDown = false;
this.comboBox.repaint();
}
@Override
public void show() {
setListSelection(this.comboBox.getSelectedIndex());
Point location = getPopupLocation();
show(this.comboBox, location.x + 3, location.y - 2);
}
private void setListSelection(int selectedIndex) {
if (selectedIndex == -1) {
this.list.clearSelection();
} else {
this.list.setSelectedIndex(selectedIndex);
this.list.ensureIndexIsVisible(selectedIndex);
}
}
private Point getPopupLocation() {
Dimension popupSize = new Dimension((int) this.comboBox.getSize().getWidth() - 6, (int) this.comboBox.getSize().getHeight());
Insets insets = getInsets();
popupSize.setSize(popupSize.width - (insets.right + insets.left), getPopupHeightForRowCount(this.comboBox.getMaximumRowCount()));
Rectangle popupBounds = computePopupBounds(0, this.comboBox.getBounds().height, popupSize.width, popupSize.height);
Dimension scrollSize = popupBounds.getSize();
Point popupLocation = popupBounds.getLocation();
this.scroller.setMaximumSize(scrollSize);
this.scroller.setPreferredSize(scrollSize);
this.scroller.setMinimumSize(scrollSize);
this.list.revalidate();
return popupLocation;
}
}
private class ComboBoxPropertyListener implements PropertyChangeListener {
public void propertyChange(PropertyChangeEvent evt) {
if (evt.getPropertyName().equals("enabled")) {
synchronizeEditorStatus(((Boolean) evt.getNewValue()).booleanValue());
}
}
}
private class ComboBoxMouseListener extends MouseAdapter {
@Override
public void mousePressed(MouseEvent e) {
ComboBoxUI.this.isDown = true;
super.mousePressed(e);
getComboBox().repaint();
}
@Override
public void mouseClicked(MouseEvent e) {
super.mouseClicked(e);
getComboBox().repaint();
}
@Override
public void mouseEntered(MouseEvent e) {
super.mouseEntered(e);
getComboBox().repaint();
}
@Override
public void mouseExited(MouseEvent e) {
ComboBoxUI.this.isDown = false;
super.mouseExited(e);
getComboBox().repaint();
}
@Override
public void mouseReleased(MouseEvent e) {
ComboBoxUI.this.isDown = false;
super.mouseReleased(e);
getComboBox().repaint();
}
}
// ================================================================
private ComboBoxMouseListener comboBoxListener = new ComboBoxMouseListener();
private ComboBoxPropertyListener changeListener = new ComboBoxPropertyListener();
private boolean isDown = false;
public static ComponentUI createUI(JComponent c) {
return new ComboBoxUI();
}
@Override
protected void installComponents() {
this.arrowButton = createArrowButton();
if (this.arrowButton != null) {
this.comboBox.add(this.arrowButton);
}
if (this.comboBox.isEditable()) {
addEditor();
}
this.comboBox.add(this.currentValuePane);
}
@Override
public void installUI(JComponent c) {
super.installUI(c);
this.listBox.setCellRenderer(new RapidLookListCellRenderer());
}
@Override
protected void installListeners() {
super.installListeners();
this.comboBox.addMouseListener(this.comboBoxListener);
this.comboBox.addPropertyChangeListener(this.changeListener);
}
@Override
protected void uninstallListeners() {
this.comboBox.removeMouseListener(this.comboBoxListener);
this.comboBox.removePropertyChangeListener(this.changeListener);
super.uninstallListeners();
}
@Override
public void installDefaults() {
super.installDefaults();
}
@Override
public void paint(Graphics g, JComponent c) {
this.hasFocus = this.comboBox.hasFocus();
CashedPainter.drawComboBox(c, g, this.isDown);
CashedPainter.drawComboBoxBorder(c, g, this.isDown, false);
if (!this.comboBox.isEditable()) {
Rectangle r = rectangleForCurrentValue();
paintCurrentValue(g, r, this.hasFocus);
}
}
@Override
public void paintCurrentValue(Graphics g, Rectangle bounds, boolean hasFocus) {
ListCellRenderer renderer = this.comboBox.getRenderer();
Component c;
if (hasFocus && !isPopupVisible(this.comboBox)) {
c = renderer.getListCellRendererComponent(this.listBox, this.comboBox.getSelectedItem(), -1, true, false);
} else {
c = renderer.getListCellRendererComponent(this.listBox, this.comboBox.getSelectedItem(), -1, false, false);
c.setBackground(UIManager.getColor("ComboBox.background"));
}
c.setFont(this.comboBox.getFont());
if (this.comboBox.isEnabled()) {
c.setForeground(this.comboBox.getForeground());
c.setBackground(this.comboBox.getBackground());
} else {
c.setForeground(UIManager.getColor("ComboBox.disabledForeground"));
c.setBackground(UIManager.getColor("ComboBox.disabledBackground"));
}
boolean shouldValidate = false;
if (c instanceof JPanel) {
shouldValidate = true;
}
c.setBackground(new Color(255, 255, 255, 0));
this.currentValuePane.paintComponent(g, c, this.comboBox, bounds.x, bounds.y, bounds.width, bounds.height, shouldValidate);
}
@Override
protected JButton createArrowButton() {
return null;
}
@Override
protected ComboBoxEditor createEditor() {
return new RapidLookComboBoxEditor.UIResource();
}
@Override
protected ComboPopup createPopup() {
return new RapidLookComboPopup(this.comboBox);
}
private JComboBox getComboBox() {
return this.comboBox;
}
protected void synchronizeEditorStatus(boolean enabled) {
if (this.comboBox.getEditor() instanceof RapidLookComboBoxEditor) {
((RapidLookComboBoxEditor) this.comboBox.getEditor()).setEnable(enabled);
}
}
@Override
protected Rectangle rectangleForCurrentValue() {
int width = this.comboBox.getWidth();
int height = this.comboBox.getHeight();
return new Rectangle(5, 3, width - 25, height - 6);
}
}