package net.sourceforge.tuned.ui;


import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.AbstractAction;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JPanel;
import javax.swing.KeyStroke;
import javax.swing.border.Border;
import javax.swing.plaf.ComboBoxUI;
import javax.swing.plaf.basic.BasicComboBoxUI;

import net.sourceforge.filebot.resources.ResourceManager;


public class SelectButtonTextField<T> extends JPanel {
	
	private SelectButton<T> selectButton;
	
	private ComboBoxTextField editor = new ComboBoxTextField();
	
	private Color borderColor = new Color(0xA4A4A4);
	
	
	public SelectButtonTextField() {
		setLayout(new BorderLayout(0, 0));
		
		selectButton = new SelectButton<T>();
		selectButton.addActionListener(textFieldFocusOnClick);
		
		Border lineBorder = BorderFactory.createLineBorder(borderColor, 1);
		Border matteBorder = BorderFactory.createMatteBorder(1, 0, 1, 1, borderColor);
		Border emptyBorder = BorderFactory.createEmptyBorder(0, 3, 0, 3);
		
		selectButton.setBorder(lineBorder);
		editor.setBorder(BorderFactory.createCompoundBorder(matteBorder, emptyBorder));
		
		add(editor, BorderLayout.CENTER);
		add(selectButton, BorderLayout.WEST);
		
		setPreferredSize(new Dimension(280, 22));
		
		TunedUtil.registerActionForKeystroke(this, KeyStroke.getKeyStroke("shift UP"), new SpinClientAction(-1));
		TunedUtil.registerActionForKeystroke(this, KeyStroke.getKeyStroke("shift DOWN"), new SpinClientAction(1));
	}
	

	/**
	 * Convenience method for <code>getEditor().getSelectedItem().toString()</code>
	 */
	public String getText() {
		return getEditor().getSelectedItem().toString();
	}
	

	/**
	 * Convenience method for <code>getSelectButton().getSelectedValue()</code>
	 */
	public T getSelected() {
		return getSelectButton().getSelectedValue();
	}
	

	public JComboBox getEditor() {
		return editor;
	}
	

	public SelectButton<T> getSelectButton() {
		return selectButton;
	}
	
	private final ActionListener textFieldFocusOnClick = new ActionListener() {
		
		public void actionPerformed(ActionEvent e) {
			getEditor().requestFocus();
		}
		
	};
	
	
	private class SpinClientAction extends AbstractAction {
		
		private int spin;
		
		
		public SpinClientAction(int spin) {
			this.spin = spin;
		}
		

		public void actionPerformed(ActionEvent e) {
			selectButton.spinValue(spin);
		}
	}
	

	private static class ComboBoxTextField extends JComboBox {
		
		public ComboBoxTextField() {
			setEditable(true);
			super.setUI(new TextFieldComboBoxUI());
		}
		

		@Override
		public void setUI(ComboBoxUI ui) {
			// don't reset the UI delegate if laf is changed, or we use our custom ui
		}
		
	}
	

	private static class TextFieldComboBoxUI extends BasicComboBoxUI {
		
		@Override
		protected JButton createArrowButton() {
			JButton b = new JButton(ResourceManager.getIcon("action.list"));
			
			b.setContentAreaFilled(false);
			b.setFocusable(false);
			
			return b;
		}
		
	}
	
}