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//=============================================================================
// Copyright 2006-2010 Daniel W. Dyer
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//=============================================================================
package org.uncommons.watchmaker.examples.sudoku;
import javax.swing.table.AbstractTableModel;
/**
* {@link javax.swing.table.TableModel} for displaying a Sudoku
* grid in a {@link javax.swing.JTable}.
* @author Daniel Dyer
*/
class SudokuTableModel extends AbstractTableModel
{
// In puzzle mode, the user can edit the given cells and all other
// cells are blank. In solution mode, all cells have values and are
// uneditable.
private boolean puzzleMode = true;
// Solution mode data.
private Sudoku sudoku;
// Puzzle mode data.
private final Character[][] cells = new Character[Sudoku.SIZE][Sudoku.SIZE];
/**
* Sets the Sudoku grid represented by this table model.
*/
public void setSudoku(Sudoku sudoku)
{
this.sudoku = sudoku;
puzzleMode = false;
fireTableRowsUpdated(0, getRowCount() - 1);
}
/**
* @return The Sudoku grid represented by this table model.
*/
public Sudoku getSudoku()
{
return sudoku;
}
public int getRowCount()
{
return Sudoku.SIZE;
}
public int getColumnCount()
{
return Sudoku.SIZE;
}
public Object getValueAt(int row, int column)
{
if (puzzleMode)
{
return cells[row][column];
}
else
{
return sudoku == null ? null : sudoku.getValue(row, column);
}
}
@Override
public boolean isCellEditable(int row, int column)
{
return puzzleMode;
}
@Override
public void setValueAt(Object object, int row, int column)
{
Character value = (Character) object;
if (!(value == null || (value >= '1' && value <= '9')))
{
throw new IllegalArgumentException("Invalid character: " + value);
}
cells[row][column] = value;
fireTableCellUpdated(row, column);
}
/**
* Sets all cells at once using the same patterns as supported by
* {@link SudokuFactory}.
* @param pattern A String representation of a Sudoku puzzle. Each element
* in the array represents a single row. There are 9 elements and each has 9
* characters, one per cell. Number cells are represented by the characters
* '0' to '9' and blank cells are represented by dots.
*/
public void setPattern(String[] pattern)
{
if (pattern.length != Sudoku.SIZE)
{
throw new IllegalArgumentException("Pattern must have " + Sudoku.SIZE + " rows.");
}
for (int row = 0; row < pattern.length; row++)
{
String patternRow = pattern[row];
if (patternRow.length() != Sudoku.SIZE)
{
throw new IllegalArgumentException("Row must have " + Sudoku.SIZE + " columns.");
}
for (int column = 0; column < patternRow.toCharArray().length; column++)
{
char c = patternRow.toCharArray()[column];
cells[row][column] = c == '.' ? null : c;
}
}
sudoku = null;
puzzleMode = true;
fireTableRowsUpdated(0, getRowCount() - 1);
}
/**
* @return A Sudoku puzzle in the pattern format used by {@link SudokuFactory}.
*/
public String[] getPattern()
{
String[] pattern = new String[Sudoku.SIZE];
for (int i = 0; i < cells.length; i++)
{
Character[] row = cells[i];
StringBuilder rowString = new StringBuilder();
for (Character c : row)
{
rowString.append(c == null ? '.' : c);
}
pattern[i] = rowString.toString();
}
return pattern;
}
}
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