com.hilotec.elexis.messwerte.v2.views.MessungenComparator.java Source code

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Here is the source code for com.hilotec.elexis.messwerte.v2.views.MessungenComparator.java

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/*******************************************************************************
 * 
 * The authorship of this code and the accompanying materials is held by 
 * medshare GmbH, Switzerland. All rights reserved. 
 * http://medshare.net
 * 
 * This code and the accompanying materials are made available under 
 * the terms of the Eclipse Public License v1.0
 * 
 * Year of publication: 2012
 * 
 *******************************************************************************/

package com.hilotec.elexis.messwerte.v2.views;

import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerComparator;
import org.eclipse.swt.SWT;

import ch.rgw.tools.TimeTool;

import com.hilotec.elexis.messwerte.v2.data.Messung;

public class MessungenComparator extends ViewerComparator {

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

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

    public int getDirection() {
        return direction == 1 ? SWT.DOWN : SWT.UP;
    }

    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) {
        Messung m1 = (Messung) e1;
        Messung m2 = (Messung) e2;
        int rc = 0;
        switch (propertyIndex) {
        case 0:
            TimeTool t1 = new TimeTool(m1.getDatum());
            TimeTool t2 = new TimeTool(m2.getDatum());
            rc = t1.compareTo(t2);
            break;
        default:
            rc = 0;
        }
        // If descending order, flip the direction
        if (direction == DESCENDING) {
            rc = -rc;
        }
        return rc;
    }

}