package net.sourceforge.tuned.ui; import java.awt.Color; import java.awt.Component; import java.awt.Dimension; import java.awt.Font; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Insets; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.awt.geom.GeneralPath; import java.awt.geom.Path2D; import java.util.ArrayList; import java.util.Collection; import java.util.List; import javax.swing.Icon; import javax.swing.JButton; import javax.swing.JMenuItem; import javax.swing.JPopupMenu; import javax.swing.SwingConstants; public class SelectButton extends JButton implements ActionListener { private boolean hover = false; private Color beginColor = Color.decode("#F0EEE4"); private Color endColor = Color.decode("#E0DED4"); private Color beginColorHover = beginColor; private Color endColorHover = Color.decode("#D8D7CD"); private Entry selectedEntry = null; private List> entries = new ArrayList>(); public static final String SELECTED_VALUE_PROPERTY = "SELECTED_VALUE_PROPERTY"; public SelectButton(Collection> entries) { if (entries.isEmpty()) throw new IllegalArgumentException("Entries must not be empty"); this.entries.addAll(entries); setContentAreaFilled(false); setFocusable(false); addActionListener(this); setHorizontalAlignment(SwingConstants.CENTER); setVerticalAlignment(SwingConstants.CENTER); addMouseListener(new MouseInputListener()); setPreferredSize(new Dimension(32, 22)); // select first entry setSelectedIndex(0); } public void setSelectedValue(T value) { Entry entry = find(value); if (entry == null) return; selectedEntry = entry; setIcon(new SelectIcon(selectedEntry.getIcon())); firePropertyChange(SELECTED_VALUE_PROPERTY, null, selectedEntry); } public T getSelectedEntry() { return selectedEntry.getValue(); } public void setSelectedIndex(int i) { setSelectedValue(entries.get(i).getValue()); } public int getSelectedIndex() { return entries.indexOf(selectedEntry); } private Entry find(T value) { for (Entry entry : entries) { if (entry.value == value) return entry; } return null; } public void spinValue(int spin) { spin = spin % entries.size(); int next = getSelectedIndex() + spin; if (next < 0) next += entries.size(); else if (next >= entries.size()) next -= entries.size(); setSelectedIndex(next); } public void actionPerformed(ActionEvent e) { JPopupMenu popup = new JPopupMenu(); for (Entry entry : entries) { popup.add(new SelectMenuItem(entry)); } popup.show(this, 0, getHeight() - 1); } @Override protected void paintComponent(Graphics g) { Graphics2D g2d = (Graphics2D) g; if (hover) g2d.setPaint(GradientStyle.TOP_TO_BOTTOM.getGradientPaint(getBounds(), beginColorHover, endColorHover)); else g2d.setPaint(GradientStyle.TOP_TO_BOTTOM.getGradientPaint(getBounds(), beginColor, endColor)); g2d.fill(getBounds()); super.paintComponent(g); } private class SelectMenuItem extends JMenuItem implements ActionListener { private T value; public SelectMenuItem(Entry entry) { super(entry.toString(), entry.getIcon()); this.value = entry.getValue(); this.setMargin(new Insets(3, 0, 3, 0)); this.addActionListener(this); if (this.value == getSelectedEntry()) this.setFont(this.getFont().deriveFont(Font.BOLD)); } @Override public void actionPerformed(ActionEvent e) { setSelectedValue(value); } } private static class SelectIcon implements Icon { private Icon icon; private GeneralPath arrow; public SelectIcon(Icon icon) { this.icon = icon; arrow = new GeneralPath(Path2D.WIND_EVEN_ODD, 3); int x = 25; int y = 10; arrow.moveTo(x - 2, y); arrow.lineTo(x, y + 3); arrow.lineTo(x + 3, y); arrow.lineTo(x - 2, y); } public synchronized void paintIcon(Component c, Graphics g, int x, int y) { Graphics2D g2d = (Graphics2D) g; icon.paintIcon(c, g2d, 4, 3); g2d.setPaint(Color.BLACK); g2d.fill(arrow); } public int getIconWidth() { return 30; } public int getIconHeight() { return 20; } } private class MouseInputListener extends MouseAdapter { @Override public void mouseEntered(MouseEvent e) { hover = true; repaint(); } @Override public void mouseExited(MouseEvent e) { hover = false; repaint(); } } public static class Entry { private T value; private Icon icon; public Entry(T value, Icon icon) { this.value = value; this.icon = icon; } public T getValue() { return value; } public Icon getIcon() { return icon; } @Override public String toString() { return value.toString(); } } }