/*
 * This file is part of LCMC written by Rasto Levrinc.
 *
 * Copyright (C) 2014, Rastislav Levrinc.
 *
 * The LCMC 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 2, or (at your option)
 * any later version.
 *
 * The LCMC 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 LCMC; see the file COPYING.  If not, write to
 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 */
package lcmc.cluster.ui.widget;

import java.util.List;
import lcmc.common.domain.util.Tools;

/**
 * Check if fields has changed and if it is correct.
 */
public final class Check {
    private String toolTipCache = null;
    private final List<String> incorrectFields;
    private final List<String> changedFields;

    public Check(final List<String> incorrectFields, final List<String> changedFields) {
        super();
        this.incorrectFields = incorrectFields;
        this.changedFields = changedFields;
    }

    public void addCheck(final Check subCheck) {
        incorrectFields.addAll(subCheck.incorrectFields);
        changedFields.addAll(subCheck.changedFields);
        toolTipCache = null;
    }

    public void addChanged(final String changed) {
        changedFields.add(changed);
        toolTipCache = null;
    }

    public void addIncorrect(final String incorrect) {
        incorrectFields.add(incorrect);
        toolTipCache = null;
    }

    /** All the fields are correct. */
    public boolean isCorrect() {
        return incorrectFields == null || incorrectFields.isEmpty();
    }

    /** At least one field has changed. */
    public boolean isChanged() {
        return changedFields != null && !changedFields.isEmpty();
    }

    public String getToolTip() {
        if (toolTipCache == null) {
            toolTipCache = getToolTipInside().toString();
            return toolTipCache;
        }
        return toolTipCache;
    }

    public CharSequence getToolTipInside() {
        final StringBuilder toolTip = new StringBuilder();
        if (!incorrectFields.isEmpty() || !changedFields.isEmpty()) {
            toolTip.append("<table>");
            if (!incorrectFields.isEmpty()) {
                toolTip.append("<tr><td>incorrect:</td><td>")
                       .append(Tools.join("<br>", incorrectFields))
                       .append("</td></tr>");
            }
            if (!changedFields.isEmpty()) {
                toolTip.append("<tr>")
                       .append("<td valign='top'>change:</td><td>")
                       .append(Tools.join("<br>", changedFields))
                       .append("</td></tr>");
            }
            toolTip.append("</table>");
        }
        return toolTip;
    }
}