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OptaPlanner solves planning problems. This lightweight, embeddable planning engine implements powerful and scalable algorithms to optimize business resource scheduling and planning. This module contains the examples which demonstrate how to use it in a normal Java application.

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/*
 * Copyright 2016 Red Hat, Inc. and/or its affiliates.
 *
 * 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.optaplanner.examples.scrabble.swingui;

import static org.optaplanner.examples.common.swingui.timetable.TimeTablePanel.HeaderColumnKey.HEADER_COLUMN;
import static org.optaplanner.examples.common.swingui.timetable.TimeTablePanel.HeaderRowKey.HEADER_ROW;

import java.awt.BorderLayout;

import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTabbedPane;
import javax.swing.SwingConstants;

import org.optaplanner.examples.common.swingui.SolutionPanel;
import org.optaplanner.examples.common.swingui.timetable.TimeTablePanel;
import org.optaplanner.examples.scrabble.domain.ScrabbleCell;
import org.optaplanner.examples.scrabble.domain.ScrabbleSolution;
import org.optaplanner.swing.impl.SwingUtils;
import org.optaplanner.swing.impl.TangoColorFactory;

public class ScrabblePanel extends SolutionPanel {

    public static final String LOGO_PATH = "/org/optaplanner/examples/scrabble/swingui/scrabbleLogo.png";

    private final TimeTablePanel gridPanel;

    public ScrabblePanel() {
        setLayout(new BorderLayout());
        JTabbedPane tabbedPane = new JTabbedPane();
        gridPanel = new TimeTablePanel<>();
        tabbedPane.add("Grid", new JScrollPane(gridPanel));
        add(tabbedPane, BorderLayout.CENTER);
        setPreferredSize(PREFERRED_SCROLLABLE_VIEWPORT_SIZE);
    }

    @Override
    public boolean isWrapInScrollPane() {
        return false;
    }

    @Override
    public void resetPanel(ScrabbleSolution solution) {
        gridPanel.reset();
        defineGrid(solution);
        fillCells(solution);
        repaint(); // Hack to force a repaint of TimeTableLayout during "refresh screen while solving"
    }

    private void defineGrid(ScrabbleSolution solution) {
        JButton footprint = SwingUtils.makeSmallButton(new JButton("99"));
        int footprintWidth = footprint.getPreferredSize().width;

        gridPanel.defineColumnHeaderByKey(HEADER_COLUMN);
        for (int x = 0; x < solution.getGridWidth(); x++) {
            gridPanel.defineColumnHeader(x, footprintWidth);
        }

        gridPanel.defineRowHeaderByKey(HEADER_ROW);
        for (int y = 0; y < solution.getGridHeight(); y++) {
            gridPanel.defineRowHeader(y);
        }
        gridPanel.defineRowHeader(null); // Unassigned
    }

    private void fillCells(ScrabbleSolution solution) {
        fillXCells(solution);
        fillYCells(solution);
        fillTeamAssignmentCells(solution);
    }

    private void fillXCells(ScrabbleSolution solution) {
        for (int x = 0; x < solution.getGridWidth(); x++) {
            gridPanel.addColumnHeader(x, HEADER_ROW,
                    createTableHeader(new JLabel(Integer.toString(x), SwingConstants.CENTER)));
        }
    }

    private void fillYCells(ScrabbleSolution solution) {
        for (int y = 0; y < solution.getGridHeight(); y++) {
            gridPanel.addRowHeader(HEADER_COLUMN, y,
                    createTableHeader(new JLabel(Integer.toString(y))));
        }
        gridPanel.addRowHeader(HEADER_COLUMN, null,
                createTableHeader(new JLabel("Unassigned")));
    }

    private void fillTeamAssignmentCells(ScrabbleSolution solution) {
        for (ScrabbleCell cell : solution.getCellList()) {
            for (Character c : cell.getCharacterSet()) {
                gridPanel.addCell(cell.getX(), cell.getY(), new JLabel(c.toString(), SwingConstants.CENTER));
            }
        }
    }

    private JPanel createTableHeader(JLabel label) {
        JPanel headerPanel = new JPanel(new BorderLayout());
        headerPanel.add(label, BorderLayout.NORTH);
        headerPanel.setBorder(BorderFactory.createCompoundBorder(
                BorderFactory.createLineBorder(TangoColorFactory.ALUMINIUM_5),
                BorderFactory.createEmptyBorder(2, 2, 2, 2)));
        return headerPanel;
    }

}