package com.ericsson.tic.vi;

import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.BoxLayout;
import java.awt.BorderLayout;
import java.awt.Dimension;
import javax.swing.ScrollPaneConstants;
import java.awt.Color;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.JColorChooser;
import javax.swing.ImageIcon;
import java.awt.image.BufferedImage;
import java.awt.Graphics2D;
import java.io.File;
import javax.imageio.ImageIO;
import java.io.IOException;
import java.util.LinkedList;
import java.util.ListIterator;

/**
 * The DataListPanel and DataPanel combine to create lists of
 * categories/views etc.
 * 
 * @see CardPanel
 * @see DataPanel
 * @author	Sami Matilainen
 * @version 1.0 (2008-12-04)
 */
public class DataListPanel extends JPanel implements ActionListener {
	
	/** Subpanel used for layout. */
	private JPanel topPanel;
	
	/** A Jpanel used for layout. */
	private JPanel container;
	
	/** A scrollpane. */
	private JScrollPane scrollPane;
	
	/** A list of datapanels. */
	private DataPanel[] dataPanel;
	
	/** The type of this data list. */
	public int type;
	
	/**
	 * Creates a Data List.
	 *
	 * @param type	The type of this data list. Defined in CardPanel.
	 */
	public DataListPanel(int type) {
		
		this.type = type;
		
		this.setLayout(new BorderLayout());
		
		this.setPreferredSize(new Dimension(350, 350));
		this.setMinimumSize(new Dimension(350, 350));
		this.setMaximumSize(new Dimension(350, 350));
		
		container = new JPanel();
		container.setLayout(new BorderLayout());
		
		topPanel = new JPanel();
		topPanel.setLayout(new BoxLayout(topPanel, BoxLayout.PAGE_AXIS));
		
		if (type == CardPanel.CATEGORY) {
			listCategories();
		} else if (type == CardPanel.NODE) {
			listNodes();
		} else if (type == CardPanel.REL) {
			listRelations();
		} else if (type == CardPanel.VIEW) {
			listViews();
		}
		
		container.add(topPanel, BorderLayout.NORTH);
		container.add(new JPanel(), BorderLayout.CENTER);
		
		scrollPane = new JScrollPane(container);
		scrollPane.setVerticalScrollBarPolicy(
			ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
		
		this.add(scrollPane, BorderLayout.CENTER);
		
	}
	
	/**
	 * Creates a category list.
	 */
	public void listCategories() {
		
		// note that this mrthod currently only lists the first category!
		// todo: loop thru the categories and list each one in it's own "tab"
		// similar to how view-settings are listed.
		dataPanel = new DataPanel[VI.categoryArr[1].cats.length];
		
		for (int i = 0; i < VI.categoryArr[1].cats.length; i++) {
			
			Color c = new Color(	VI.categoryArr[1].cats[i].color[0],
									VI.categoryArr[1].cats[i].color[1],
									VI.categoryArr[1].cats[i].color[2]);
			
			dataPanel[i] = new DataPanel(
				VI.categoryArr[1].cats[i].name, c, this);
			topPanel.add(dataPanel[i]);
			
			dataPanel[i].colorButton.removeActionListener(
				dataPanel[i].colorButton);
			
			dataPanel[i].colorButton.addActionListener(this);
			dataPanel[i].colorButton.setActionCommand("category " + i);
			
			dataPanel[i].brushingButton.addActionListener(this);
			dataPanel[i].brushingButton.setActionCommand("brush category " + i);
			dataPanel[i].colorButton.brushingEnabled = true;
			
		}
		
	}
	
	/**
	 * Creates a view list.
	 */
	public void listViews() {
		
		dataPanel = new DataPanel[VI.viewList.size()];
		
		ListIterator iter = VI.viewList.listIterator();
		
		ViewPanel view;
		
		int i = 0;
		
		while (iter.hasNext()) {
		
			view = (ViewPanel)iter.next();
			
			dataPanel[i] = new DataPanel("View " + view.id, this, view);
			topPanel.add(dataPanel[i]);
			
			i++;
		
		}
		
	}
	
	/**
	 * Updates the view list.
	 */
	public void updateViewList() {
		
		this.removeAll();
		container = new JPanel();
		container.setLayout(new BorderLayout());
		
		topPanel = new JPanel();
		topPanel.setLayout(new BoxLayout(topPanel, BoxLayout.PAGE_AXIS));
		
		dataPanel = new DataPanel[VI.viewList.size()];
		
		ListIterator iter = VI.viewList.listIterator();
		
		ViewPanel view;
		
		int i = 0;
		
		while (iter.hasNext()) {
		
			view = (ViewPanel)iter.next();
			
			dataPanel[i] = new DataPanel("View " + view.id, this, view);
			topPanel.add(dataPanel[i]);
			i++;
		
		}
		
		container.add(topPanel, BorderLayout.NORTH);
		container.add(new JPanel(), BorderLayout.CENTER);
		
		scrollPane = new JScrollPane(container);
		scrollPane.setVerticalScrollBarPolicy(
			ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
		
		this.add(scrollPane, BorderLayout.CENTER);
		
		//this.validate();
		this.revalidate();
		
	}
	
	/**
	 * Creates a relations list. This method is empty.
	 */
	public void listRelations() {
		
		// todo: list all relations
		// todo: settings for the relations
		
	}
	
	/**
	 * Creates a nodes list. This method is empty.
	 */
	public void listNodes() {
		
		// todo: list all nodes
		// todo: settings for the nodes
		
	}
	
	/**
	 * Called when an ActionEvent is triggered.
	 *
	 * @param e The ActionEvent which triggered the event.
	 */
	public void actionPerformed(ActionEvent e) {
		
		for (int i = 0; i < VI.categoryArr[1].cats.length; i++) {
			
			if (("category " + i).equals(e.getActionCommand())) {
				
				Color color = JColorChooser.showDialog(
					this, "Choose color", dataPanel[i].colorButton.c);
				if (color != null) {
					dataPanel[i].colorButton.c = color;
					dataPanel[i].colorButton.updateIcon();
				}
				
				VI.categoryArr[1].cats[i].color = color.getColorComponents(
					VI.categoryArr[1].cats[i].color);
				
			}
			
		}
		
		for (int i = 0; i < VI.categoryArr[1].cats.length; i++) {
			
			if (("brush category " + i).equals(e.getActionCommand())) {
				
				for (int k = 0; k < VI.categoryArr[1].cats.length; k++) {
					dataPanel[k].colorButton.brushingPrimary = false;
					dataPanel[k].brushingButton.setIcon(VI.brushOffIcon);
				}
				
				if (VI.brushingOn && i == VI.brushedCategory) {
					VI.brushingOn = false;
					dataPanel[i].brushingButton.setIcon(VI.brushOffIcon);
				} else {
					VI.brushedCategory = i;
					VI.brushingOn = true;
					dataPanel[i].colorButton.brushingPrimary = true;
					dataPanel[i].brushingButton.setIcon(VI.brushOnIcon);
				}
				
				for (int k = 0; k < VI.categoryArr[1].cats.length; k++) {
					dataPanel[k].colorButton.updateIcon();
				}
				
			}
			
		}
		
	}
	
}