private void updateEntireView() {
// upadte board view entirely
boardView.update(board, remainMode.isSelected());
// redraw combination view
Group group = board.getGroup(board.getCurrentCell().getGroupId());
combinationView.update(group);
}
private void moveFocusTo(int row, int col) {
// update combination list if new group is selected
Cell cell = board.getCell(row, col);
int groupId = cell.getGroupId();
if (groupId != board.getCurrentCell().getGroupId()) {
combinationView.update(board.getGroup(groupId));
}
// don't update current cell before checking group ID changed
board.setCurrentCell(row, col);
boardView.focusOn(row, col);
}
@Override
public void handle(KeyEvent event) {
Cell current = board.getCurrentCell();
final int row = current.row;
final int col = current.col;
int nextRow = row;
int nextCol = col;
KeyCode code = event.getCode();
switch (code) {
// move using AWSD feature
case UP:
case W:
nextRow = row == Board.MIN_INDEX ? Board.MAX_INDEX : row - 1;
break;
case DOWN:
case S:
nextRow = row == Board.MAX_INDEX ? Board.MIN_INDEX : row + 1;
break;
case LEFT:
case A:
nextCol = col == Board.MIN_INDEX ? Board.MAX_INDEX : col - 1;
break;
case RIGHT:
case D:
nextCol = col == Board.MAX_INDEX ? Board.MIN_INDEX : col + 1;
break;
// switch to hint mode feature
case SHIFT:
hintMode.setSelected(!hintMode.isSelected());
break;
// auto solve
case SPACE:
auto();
break;
// undo
case Z:
if (event.isControlDown()) {
undo();
}
break;
// delete cell feature
case DIGIT0:
case NUMPAD0:
case DELETE:
case BACK_SPACE:
if (hintMode.isSelected()) {
removeCellHints(row, col);
} else {
removeCellValue(row, col);
}
break;
// enter cell value feature
default:
if (code.isDigitKey()) {
String text = event.getText();
int value = Integer.parseInt(text);
if (hintMode.isSelected()) {
toggleCellHint(row, col, value);
} else {
updateCellValue(row, col, value);
}
}
break;
}
// move to next cell
event.consume(); // prevent arrow keys automatically change the focus
if (nextRow != current.row || nextCol != current.col) {
moveFocusTo(nextRow, nextCol);
}
}