org.eclipse.scada.ae.ui.testing.views.EventsLabelProvider.java Source code

Introduction

Here is the source code for org.eclipse.scada.ae.ui.testing.views.EventsLabelProvider.java

Source

/*******************************************************************************
 * Copyright (c) 2009, 2013 TH4 SYSTEMS GmbH and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     TH4 SYSTEMS GmbH - initial API and implementation
 *******************************************************************************/
package org.eclipse.scada.ae.ui.testing.views;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Set;

import org.eclipse.core.databinding.observable.map.IMapChangeListener;
import org.eclipse.core.databinding.observable.map.IObservableMap;
import org.eclipse.core.databinding.observable.map.MapChangeEvent;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.jface.resource.LocalResourceManager;
import org.eclipse.jface.resource.ResourceManager;
import org.eclipse.jface.viewers.CellLabelProvider;
import org.eclipse.jface.viewers.LabelProviderChangedEvent;
import org.eclipse.jface.viewers.ViewerCell;
import org.eclipse.scada.ae.Event;
import org.eclipse.scada.core.Variant;

public class EventsLabelProvider extends CellLabelProvider {

    private final IMapChangeListener mapChangeListener = new IMapChangeListener() {
        @Override
        public void handleMapChange(final MapChangeEvent event) {
            final Set<?> affectedElements = event.diff.getChangedKeys();
            if (!affectedElements.isEmpty()) {
                final LabelProviderChangedEvent newEvent = new LabelProviderChangedEvent(EventsLabelProvider.this,
                        affectedElements.toArray());
                fireLabelProviderChanged(newEvent);
            }
        }
    };

    private final IObservableMap[] attributeMaps;

    private final DateFormat dateFormat;

    private final ResourceManager resourceManager = new LocalResourceManager(JFaceResources.getResources());

    public EventsLabelProvider(final IObservableMap... attributeMaps) {
        super();

        for (int i = 0; i < attributeMaps.length; i++) {
            attributeMaps[i].addMapChangeListener(this.mapChangeListener);
        }
        this.attributeMaps = attributeMaps;

        this.dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
    }

    @Override
    public void dispose() {
        for (int i = 0; i < this.attributeMaps.length; i++) {
            this.attributeMaps[i].removeMapChangeListener(this.mapChangeListener);
        }

        super.dispose();

        this.resourceManager.dispose();
    }

    private Variant getAttributes(final Event event, final String key) {
        return getAttributes(event, key, Variant.NULL);
    }

    private Variant getAttributes(final Event event, final String key, final Variant defaultValue) {
        final Variant value = event.getAttributes().get(key);
        if (value == null) {
            return defaultValue;
        } else {
            return value;
        }
    }

    @Override
    public void update(final ViewerCell cell) {
        final Object o = cell.getElement();
        if (o instanceof Event) {
            final Event info = (Event) o;

            switch (cell.getColumnIndex()) {
            case 0:
                cell.setText(this.dateFormat.format(info.getSourceTimestamp()));
                break;
            case 1:
                cell.setText(this.dateFormat.format(info.getEntryTimestamp()));
                break;
            case 2:
                cell.setText(getAttributes(info, Event.Fields.SOURCE.getName()).asString(""));
                break;
            case 3:
                cell.setText(getAttributes(info, Event.Fields.MONITOR_TYPE.getName()).asString(""));
                break;
            case 4:
                cell.setText(getAttributes(info, Event.Fields.EVENT_TYPE.getName()).asString(""));
                break;
            case 5:
                cell.setText(getAttributes(info, Event.Fields.ACTOR_NAME.getName()).asString(""));
                break;
            case 6:
                cell.setText(getAttributes(info, Event.Fields.VALUE.getName()).asString(""));
                break;
            case 7:
                cell.setText(getAttributes(info, Event.Fields.MESSAGE.getName()).asString(""));
                break;
            }
        }
    }

}