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 *   Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you 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.
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package org.apache.cayenne.modeler.editor;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Comparator;

import org.apache.cayenne.map.Embeddable;
import org.apache.cayenne.map.EmbeddableAttribute;
import org.apache.cayenne.map.event.EmbeddableAttributeEvent;
import org.apache.cayenne.modeler.Application;
import org.apache.cayenne.modeler.ProjectController;
import org.apache.cayenne.modeler.util.CayenneTable;
import org.apache.cayenne.modeler.util.CayenneTableModel;
import org.apache.cayenne.modeler.util.CellEditorForAttributeTable;
import org.apache.cayenne.modeler.util.ProjectUtil;
import org.apache.cayenne.util.Util;

public class EmbeddableAttributeTableModel extends CayenneTableModel {

    private Embeddable embeddable;

    // Columns
    static final int OBJ_ATTRIBUTE = 0;
    static final int OBJ_ATTRIBUTE_TYPE = 1;
    static final int DB_ATTRIBUTE = 2;

    private CellEditorForAttributeTable cellEditor;

    public EmbeddableAttributeTableModel(Embeddable embeddable,
            ProjectController mediator, Object eventSource) {
        super(mediator, eventSource, new ArrayList<EmbeddableAttribute>(embeddable
                .getAttributes()));
        this.embeddable = embeddable;

        // order using local comparator
        // Collections.sort(objectList, new EmbeddableAttributeComparator());
    }

    public EmbeddableAttribute getEmbeddableAttribute(int row) {
        return (row >= 0 && row < objectList.size()) ? (EmbeddableAttribute) objectList
                .get(row) : null;
    }

    @Override
    public Class<?> getElementsClass() {
        return EmbeddableAttribute.class;
    }

    @Override
    public void setUpdatedValueAt(Object value, int row, int col) {
        EmbeddableAttribute attribute = getEmbeddableAttribute(row);
        EmbeddableAttributeEvent event = new EmbeddableAttributeEvent(
                eventSource,
                embeddable,
                attribute);
        String path = null;
        Collection<String> nameAttr = null;

        if (col == OBJ_ATTRIBUTE) {
            event.setOldName(attribute.getName());
            ProjectUtil.setEmbeddableAttributeName(attribute, value != null ? value
                    .toString()
                    .trim() : null);

            fireTableCellUpdated(row, col);
        }
        else if (col == OBJ_ATTRIBUTE_TYPE) {
            attribute.setType(value != null ? value.toString() : null);
            fireTableCellUpdated(row, col);
        }
        else if (col == DB_ATTRIBUTE) {
            attribute.setDbAttributeName(value != null ? value.toString() : null);
            fireTableCellUpdated(row, col);
        }

        mediator.fireEmbeddableAttributeEvent(event);
    }

    public int getColumnCount() {
        return 3;
    }

    public String getColumnName(int column) {
        switch (column) {
            case OBJ_ATTRIBUTE:
                return "ObjAttribute";
            case OBJ_ATTRIBUTE_TYPE:
                return "Java Type";
            case DB_ATTRIBUTE:
                return "DbAttribute";
            default:
                return "";
        }
    }

    public Object getValueAt(int row, int column) {
        EmbeddableAttribute attribute = getEmbeddableAttribute(row);

        if (column == OBJ_ATTRIBUTE) {
            return attribute.getName();
        }
        else if (column == OBJ_ATTRIBUTE_TYPE) {
            return attribute.getType();
        }
        else if (column == DB_ATTRIBUTE) {
            return attribute.getDbAttributeName();
        }
        else {
            return null;
        }
    }

    public CellEditorForAttributeTable setCellEditor(
            Collection<String> nameAttr,
            CayenneTable table) {
        this.cellEditor = new CellEditorForAttributeTable(table, Application
                .getWidgetFactory()
                .createComboBox(nameAttr, true));
        return cellEditor;
    }

    public CellEditorForAttributeTable getCellEditor() {
        return cellEditor;
    }

    public boolean isCellEditable(int row, int col) {
        return true;
    }

    final class EmbeddableAttributeComparator implements Comparator {

        public int compare(Object o1, Object o2) {
            EmbeddableAttribute a1 = (EmbeddableAttribute) o1;
            EmbeddableAttribute a2 = (EmbeddableAttribute) o2;

            int delta = getWeight(a1) - getWeight(a2);

            return (delta != 0) ? delta : Util.nullSafeCompare(true, a1.getName(), a2
                    .getName());
        }

        private int getWeight(EmbeddableAttribute a) {
            return a.getEmbeddable() == embeddable ? 1 : -1;
        }
    }

    @Override
    public boolean isColumnSortable(int sortCol) {
        return true;
    }

    @Override
    public void sortByColumn(int sortCol, boolean isAscent) {
        switch (sortCol) {
            case OBJ_ATTRIBUTE:
                sortByElementProperty("name", isAscent);
                break;
            case OBJ_ATTRIBUTE_TYPE:
                sortByElementProperty("type", isAscent);
                break;
            case DB_ATTRIBUTE:
                sortByElementProperty("dbAttributeName", isAscent);
                break;
        }
    }
}