org.opennms.features.topology.plugins.browsers.CheckboxGenerator.java Source code

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Here is the source code for org.opennms.features.topology.plugins.browsers.CheckboxGenerator.java

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/*******************************************************************************
 * This file is part of OpenNMS(R).
 *
 * Copyright (C) 2012-2014 The OpenNMS Group, Inc.
 * OpenNMS(R) is Copyright (C) 1999-2014 The OpenNMS Group, Inc.
 *
 * OpenNMS(R) is a registered trademark of The OpenNMS Group, Inc.
 *
 * OpenNMS(R) 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.
 *
 * OpenNMS(R) 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 OpenNMS(R).  If not, see:
 *      http://www.gnu.org/licenses/
 *
 * For more information contact:
 *     OpenNMS(R) Licensing <license@opennms.org>
 *     http://www.opennms.org/
 *     http://www.opennms.com/
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package org.opennms.features.topology.plugins.browsers;

import java.util.Collections;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import java.util.TreeSet;

import org.opennms.web.api.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;

import com.vaadin.data.Property;
import com.vaadin.data.Container.ItemSetChangeEvent;
import com.vaadin.data.Container.ItemSetChangeListener;
import com.vaadin.data.Property.ValueChangeEvent;
import com.vaadin.data.Property.ValueChangeListener;
import com.vaadin.ui.CheckBox;
import com.vaadin.ui.Table;
import com.vaadin.ui.Table.ColumnGenerator;

public class CheckboxGenerator implements ColumnGenerator, ItemSetChangeListener {

    private static final long serialVersionUID = 2L;

    private final String m_valueProperty;
    protected final Set<CheckBox> m_checkboxes = new HashSet<CheckBox>();
    protected Set<Integer> m_selectedCheckboxes = new TreeSet<Integer>();
    protected Set<Integer> m_notSelectedCheckboxes = new TreeSet<Integer>(); //Explizit not set
    private boolean m_selectAll = false;

    public CheckboxGenerator(String valueProperty) {
        m_valueProperty = valueProperty;
    }

    @Override
    public Object generateCell(Table source, Object itemId, Object columnId) {
        final Property<Integer> property = source.getContainerProperty(itemId, m_valueProperty);
        if (property.getValue() == null) {
            return null;
        } else {
            if (SecurityContextHolder.getContext().toString().contains(Authentication.ROLE_READONLY)) {
                // Do not render the checkboxes for read-only users
                return null;
            } else {
                final CheckBox button = new CheckBox();
                button.setData(property.getValue());
                button.setValue(isSelected((Integer) property.getValue()));
                button.addValueChangeListener(new ValueChangeListener() {

                    private static final long serialVersionUID = 2991986878904005830L;

                    @Override
                    public void valueChange(ValueChangeEvent event) {
                        if (Boolean.TRUE.equals(event.getProperty().getValue())) {
                            m_selectedCheckboxes.add(property.getValue());
                            m_notSelectedCheckboxes.remove(property.getValue());
                        } else {
                            m_selectedCheckboxes.remove(property.getValue());
                            m_notSelectedCheckboxes.add(property.getValue());
                        }
                    }
                });
                m_checkboxes.add(button);
                return button;
            }
        }
    }

    private boolean isSelected(Integer id) {
        return (m_selectAll || m_selectedCheckboxes.contains(id)) && !m_notSelectedCheckboxes.contains(id);
    }

    public Set<Integer> getSelectedIds(Table source) {
        if (m_selectAll) {
            Set<Integer> selected = new TreeSet<Integer>();
            for (Object eachItemId : source.getItemIds()) {
                Property<Integer> property = source.getContainerProperty(eachItemId, m_valueProperty);
                if (property == null)
                    continue;
                selected.add(property.getValue());
            }

            //remove unselected
            selected.removeAll(m_notSelectedCheckboxes);
            return selected;
        }
        return Collections.unmodifiableSet(m_selectedCheckboxes);
    }

    public void clearSelectedIds(Table source) {
        m_selectAll = false;

        // Uncheck all of the checkboxes
        for (CheckBox button : m_checkboxes) {
            button.setValue(false);
        }
        m_selectedCheckboxes.clear();
        m_notSelectedCheckboxes.clear();
    }

    public void selectAll(Table source) {
        m_selectAll = true;

        m_selectedCheckboxes.clear();
        m_notSelectedCheckboxes.clear();
        // Check all of the checkboxes
        for (CheckBox button : m_checkboxes) {
            button.setValue(true);
            m_selectedCheckboxes.add((Integer) button.getData());
        }
    }

    @Override
    public void containerItemSetChange(ItemSetChangeEvent event) {
        // Delete all of the checkboxes, they will be regenerated during Table.containerItemSetChange()
        m_checkboxes.clear();

        // Remove any selected item IDs that are no longer present in the container
        Iterator<Integer> itr = m_selectedCheckboxes.iterator();
        while (itr.hasNext()) {
            if (!event.getContainer().getItemIds().contains(itr.next())) {
                itr.remove();
            }
        }

        // Remove any not selected item IDs that are no longer present in the container
        itr = m_notSelectedCheckboxes.iterator();
        while (itr.hasNext()) {
            if (!event.getContainer().getItemIds().contains(itr.next())) {
                itr.remove();
            }
        }
    }
}