TemplateRibbonGroupsPack.java

/**
 * ***************************************************************************
 * Copyright (c) 2010 Qcadoo Limited
 * Project: Qcadoo Framework
 * Version: 1.4
 *
 * This file is part of Qcadoo.
 *
 * Qcadoo is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published
 * by the Free Software Foundation; either version 3 of the License,
 * or (at your option) any later version.
 *
 * This program 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 * ***************************************************************************
 */
package com.qcadoo.view.internal.ribbon.templates.model;

import java.util.ArrayList;
import java.util.List;
import java.util.Set;

import com.google.common.collect.Lists;
import com.google.common.collect.Sets;
import com.qcadoo.view.internal.api.ViewDefinition;
import com.qcadoo.view.internal.ribbon.model.InternalRibbonGroup;
import com.qcadoo.view.internal.ribbon.model.RibbonGroupsPack;
import com.qcadoo.view.internal.ribbon.templates.RibbonTemplateParameters;

public class TemplateRibbonGroupsPack implements RibbonGroupsPack {

    private final RibbonTemplate template;

    private final RibbonTemplateParameters parameters;

    private List<InternalRibbonGroup> groups;

    private final ViewDefinition viewDefinition;

    private final boolean update;

    public TemplateRibbonGroupsPack(final RibbonTemplate template, final RibbonTemplateParameters parameters,
            final ViewDefinition viewDefinition) {
        this(template, parameters, viewDefinition, new ArrayList<InternalRibbonGroup>());
    }

    private TemplateRibbonGroupsPack(final RibbonTemplate template, final RibbonTemplateParameters parameters,
            final ViewDefinition viewDefinition, final List<InternalRibbonGroup> updatedGroups) {
        this.template = template;
        this.parameters = parameters;
        this.viewDefinition = viewDefinition;
        this.groups = updatedGroups;
        update = updatedGroups.isEmpty() ^ true;
    }

    @Override
    public List<InternalRibbonGroup> getGroups() {
        if (!update) {
            List<InternalRibbonGroup> templateGroups = template.getRibbonGroups(parameters, viewDefinition);
            if (templateGroups.size() > groups.size()) {
                appendGroupsFromTemplate(templateGroups);
            }
        }
        return groups;
    }

    private void appendGroupsFromTemplate(final List<InternalRibbonGroup> templateGroups) {
        Set<InternalRibbonGroup> groupsSet = Sets.newLinkedHashSet(groups);
        groupsSet.addAll(templateGroups);
        groups = Lists.newArrayList(groupsSet);
    }

    @Override
    public InternalRibbonGroup getGroupByName(final String groupName) {
        for (InternalRibbonGroup group : getGroups()) {
            if (group.getName().equals(groupName)) {
                return group;
            }
        }
        return null;
    }

    @Override
    public RibbonGroupsPack getCopy() {
        return new TemplateRibbonGroupsPack(template, parameters, viewDefinition);
    }

    @Override
    public RibbonGroupsPack getUpdate() {
        List<InternalRibbonGroup> updatedGroups = Lists.newArrayList();
        for (InternalRibbonGroup group : getGroups()) {
            InternalRibbonGroup updatedGroup = group.getUpdate();
            if (updatedGroup != null) {
                updatedGroups.add(updatedGroup);
            }
        }
        if (updatedGroups.isEmpty()) {
            return null;
        }

        return new TemplateRibbonGroupsPack(template, parameters, viewDefinition, updatedGroups);
    }

}