package org.hwo.ui.treetable;

import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;

import org.hwo.ui.CellRenderer;

public class DefaultTreeTableColumnModel implements TreeTableColumnModel {

	public class Column
	{
		private String	label;
		private int		width;
		private int		modelColumn;
		private CellRenderer
						cellRenderer;
		private TreeTablePopupListener
						popupListener;
		
		public String getLabel() {
			return label;
		}
		public void setLabel(String label) {
			this.label = label;
			fireColumnsChanged();
		}
		public int getWidth() {
			return width;
		}
		public Column setWidth(int width) {
			this.width = width;
			fireColumnsChanged();
			
			return this;
		}
		public int getModelColumn() {
			return modelColumn;
		}
		public Column setModelColumn(int modelColumn) {
			this.modelColumn = modelColumn;
			fireColumnsChanged();
			
			return this;		}
		public CellRenderer getCellRenderer() {
			return cellRenderer;
		}
		public Column setCellRenderer(CellRenderer cellRenderer) {
			this.cellRenderer = cellRenderer;
			
			return this;
		}
		public TreeTablePopupListener getPopupListener() {
			return popupListener;
		}
		public Column setPopupListener(TreeTablePopupListener popupListener) {
			this.popupListener = popupListener;
			return this;
		}
	}
	
	private List<Column> columns;
	private List<TreeTableModelListener> treeTableModelListener;
	
	public DefaultTreeTableColumnModel()
	{
		treeTableModelListener = new LinkedList<TreeTableModelListener>();
		
		columns = new ArrayList<DefaultTreeTableColumnModel.Column>();
		Column column = new Column();
		column.label = "";
		column.width = 280;
		columns.add(column);
	}

	public Column addColumn(String label)
	{
		return addColumn(label,100);
	}
	
	public Column addColumn(String label,int width)
	{
		return addColumn(label, width, -1);
	}
	
	public Column addColumn(String label,int width,int modelColumn)
	{
		Column column = new Column();
		column.label = label;
		column.width = width;
		columns.add(column);
		
		if (modelColumn == -1)
			column.modelColumn = columns.indexOf(column);
		else
			column.modelColumn = modelColumn;
		
		fireColumnsChanged();
		return column;
	}
		
	public void removeColumn(int column)
	{
		columns.remove(column);
		fireColumnsChanged();
	}
	
	public Column getColumn(int column)
	{
		return columns.get(column);
	}
	
	public int indexOfColumn(Column column)
	{
		return columns.indexOf(column);
	}
	
	@Override
	public int getColumnCount() {
		return columns.size();
	}

	@Override
	public String getColumnLabel(int column) {
		return columns.get(column).getLabel();
	}

	@Override
	public int getColumnWidth(int column) {
		return columns.get(column).getWidth();
	}

	@Override
	public int getColumnPos(int column) {
		int x = 0;
		for (int i=0;i<column;i++)
			x += getColumnWidth(i);
		return x;
	}

	@Override
	public void addTreeTableModelListener(TreeTableModelListener listener) {
		treeTableModelListener.add(listener);
	}

	@Override
	public void removeTreeTableModelListener(TreeTableModelListener listener) {
		treeTableModelListener.remove(listener);
	}
	
	private void fireColumnsChanged()
	{
		for (TreeTableModelListener listener:treeTableModelListener)
			listener.rowsChanged();
	}

	@Override
	public int getColumnAtX(int x) {
		for (int i=0;i<columns.size();i++)
		{
			if (x < getColumnPos(i+1))
				return i;
		}
		return -1;
	}

	@Override
	public CellRenderer getColumnCellRenderer(int column) {
		return columns.get(column).getCellRenderer();
	}

	@Override
	public int getColumnModelColumn(int x) 
	{
		return getColumn(x).modelColumn;
	}

	@Override
	public TreeTablePopupListener getPopup(int row, int column) {
		TreeTablePopupListener listener;
		
		listener = getPopupFromColumn(column);
		if (listener == null)
			listener = getPopupFromRow(row);
		
		return listener;
	}
	
	protected TreeTablePopupListener getPopupFromRow(int row)
	{
		return null;
	}
	
	protected TreeTablePopupListener getPopupFromColumn(int column)
	{
		return columns.get(column).getPopupListener();
	}
}