/*
 *      Book Catalog - Catalog your book collection.
 *      
 *      Copyright (C) 2009 Joshua Walters
 *      URL: http://joshwalters.com
 *      
 *      This file is part of Book Catalog.
 *      
 *      Book Catalog is free software: you can redistribute it and/or modify
 *      it under the terms of the GNU General Public License as published by
 *      the Free Software Foundation, either version 3 of the License, or
 *      (at your option) any later version.
 *      
 *      Book Catalog is distributed in the hope that it will be useful,
 *      but WITHOUT ANY WARRANTY; without even the implied warranty of
 *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *      GNU General Public License for more details.
 *      
 *      You should have received a copy of the GNU General Public License
 *      along with Book Catalog.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.joshwalters.bookcatalog;

import java.sql.SQLException;

import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;

import com.joshwalters.bookcatalog.bookdatabase.BookDatabase;
import com.joshwalters.bookcatalog.bookdatabase.EmptyDatabase;
import com.joshwalters.bookcatalog.table.BookCatalogTableModel;

/**
 * Searches the database for books. s
 * 
 * @author Josh Walters
 */
class SearchDatabase implements DocumentListener {

	private JTable bookCatalogTable;
	private BookDatabase bookDatabase;
	private JTextField searchField;

	/**
	 * Get the different objects needed for the class to function.
	 * 
	 * @param bookCatalogTable
	 * @param bookDatabase
	 * @param searchField
	 */
	public SearchDatabase(JTable bookCatalogTable, BookDatabase bookDatabase,
			JTextField searchField) {
		this.bookCatalogTable = bookCatalogTable;
		this.bookDatabase = bookDatabase;
		this.searchField = searchField;
	}

	/**
	 * Updates the table with the search string given by the user.
	 */
	public void updateTableWithSearchString() {
		try {
			// Get the table model.
			BookCatalogTableModel bookCatalogTableModel = (BookCatalogTableModel) bookCatalogTable
					.getModel();
			// If the search field is empty, display all books in the database
			// in the table.
			if (searchField.getText().length() == 0) {
				String[][] data = bookDatabase.getDatabaseForTable();
				bookCatalogTableModel.setData(data);
				bookCatalogTableModel.fireTableDataChanged();
			} else {
				// Search for matches to the search string.
				String[][] data = bookDatabase
						.searchDatabaseForTable(searchField.getText());
				// Update the table.
				bookCatalogTableModel.setData(data);
				// Refresh the table.
				bookCatalogTableModel.fireTableDataChanged();
			}
		} catch (SQLException e) {
			// There was an SQL error of some sort.
			System.err.println(e.getLocalizedMessage());
		} catch (EmptyDatabase e) {
			// The database was empty.
			System.err.println(e.getLocalizedMessage());
		}
	}

	/**
	 * Nothing to do here.
	 */
	public void changedUpdate(DocumentEvent arg0) {
	}

	/**
	 * Update the table with the search string.
	 */
	public void insertUpdate(DocumentEvent arg0) {
		updateTableWithSearchString();
	}

	/**
	 * Update the table with the search string.
	 */
	public void removeUpdate(DocumentEvent arg0) {
		updateTableWithSearchString();
	}
}