/*
	3magic Coffee Table Tutorial 17
	Tutorial17.java - Selection change handling.

	© 1997-1999 3magic.  All rights reserved worldwide.
*/

import java.awt.*;
import java.applet.*;
import java.util.*;

import CoffeeTable.Grid.*;

public class Tutorial17 extends Applet
{
	// Our grid.
	GridPanel fGrid;

	// Rows and Columns;
	int fNumCols = 6;
	int fNumRows = 50;

	// Message area.
	TextArea fMsg = new TextArea("Manipulate the grid with the mouse.\n", 10, 1);

	// sub-class a GridAdapter to handle gridSelChanged events
    class MyGridAdapter extends GridAdapter {

        // handle selection changes
        public void gridSelChanged(GridEvent e) {
        	// Show the event info in the message area.
			fMsg.append("Current selection: [");
			Vector selRows = fGrid.getSelectedRows();
			for (int i = 0; i < selRows.size(); i++) {
				if (i > 0)
					fMsg.append(", ");
				fMsg.append(((Integer)selRows.elementAt(i)).toString());
			}
			fMsg.append("] \n");
        }

    }

	/**
	 * Initialize.
	 */
	public void init() {
		// Let's use a BorderLayout to help us with the user input areas.
		setLayout(new BorderLayout());

		// Instantiate a new Grid Panel with the specified rows and columns
		// and other defaults like cell selection, row and column headers,
		// row and column lines enabled and with scrollbars.
		fGrid = new GridPanel(fNumRows, fNumCols);

		// Enable editing.
		fGrid.setGridAttributes(new GridAttributes(fGrid,
										new Font("Courier", Font.PLAIN, 12),
										null, null, 0, GridPanel.TEXT), true);

		// Enable demo text for the Grid
		fGrid.setDemoText(true);

		// Show the row headers.
		fGrid.setRowHeaderWidth(40);
		fGrid.setRowNumbers(true);

		// Turn on row and multiple selection, turn off cell selection
		fGrid.setMultipleSelection(true);
		fGrid.setRowSelection(true);
		fGrid.setCellSelection(false);

		// Let's use Times, plain, 9-point.
		fGrid.setGridFont(new Font("TimesRoman", Font.PLAIN, 9));

		// Add the grid into the applet panel
		add("Center", fGrid);

		// add a gridListener to handle selection change events
		fGrid.addGridListener(new MyGridAdapter());

		// Add the message area.
		add("South", fMsg);
	}

}