org.talend.designer.cmis.ui.metadata.PropertyDefinitionComparator.java Source code

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Here is the source code for org.talend.designer.cmis.ui.metadata.PropertyDefinitionComparator.java

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/*******************************************************************************
 * Copyright (c) 2012 Julien Boulay - Ekito - www.ekito.fr.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Public License v3.0
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/gpl.html
 * 
 * Contributors:
 *     Julien Boulay - Ekito - www.ekito.fr - initial API and implementation
 ******************************************************************************/
package org.talend.designer.cmis.ui.metadata;

import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerComparator;
import org.talend.designer.cmis.model.PropertyDefinitionModel;

public class PropertyDefinitionComparator extends ViewerComparator {

    public final static int ID = 0;
    public final static int NAME = 1;
    public final static int TYPE = 2;
    public final static int MANDATORY = 3;
    public final static int DEFAULT = 4;

    private int propertyIndex;
    private static final int DESCENDING = 1;
    private int direction = DESCENDING;

    public PropertyDefinitionComparator() {
        this.propertyIndex = 0;
        direction = DESCENDING;
    }

    public void setColumn(int column) {
        if (column == this.propertyIndex) {
            // Same column as last sort; toggle the direction
            direction = 1 - direction;
        } else {
            // New column; do an ascending sort
            this.propertyIndex = column;
            direction = DESCENDING;
        }
    }

    @Override
    public int compare(Viewer viewer, Object e1, Object e2) {
        PropertyDefinitionModel prop1 = (PropertyDefinitionModel) e1;
        PropertyDefinitionModel prop2 = (PropertyDefinitionModel) e2;
        int result = 0;

        switch (propertyIndex) {
        case ID:
            result = prop1.getId().compareTo(prop2.getId());
            break;
        case NAME:
            result = prop1.getDisplayName().compareTo(prop2.getDisplayName());
            break;
        case TYPE:
            result = prop1.getPropertyType().compareTo(prop2.getPropertyType());
            break;
        case MANDATORY:
            result = prop1.isRequired().compareTo(prop2.isRequired());
            break;
        case DEFAULT:
            result = prop1.getDefaultValue() != null
                    ? prop1.getDefaultValue().toString().compareTo(prop2.getDefaultValue().toString())
                    : 0;
            break;

        default:
            break;
        }

        // If descending order, flip the direction
        if (direction == DESCENDING) {
            result = -result;
        }

        return result;
    }

}