org.eclipse.scada.da.ui.connection.views.ConnectionLabelProvider.java Source code

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Here is the source code for org.eclipse.scada.da.ui.connection.views.ConnectionLabelProvider.java

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/*******************************************************************************
 * Copyright (c) 2009, 2014 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
 *     IBH SYSTEMS GmbH - use new adapter helper
 *******************************************************************************/
package org.eclipse.scada.da.ui.connection.views;

import java.util.Arrays;

import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.jface.resource.LocalResourceManager;
import org.eclipse.jface.resource.ResourceManager;
import org.eclipse.scada.core.Variant;
import org.eclipse.scada.da.core.browser.DataItemEntry;
import org.eclipse.scada.da.core.browser.FolderEntry;
import org.eclipse.scada.da.data.IODirection;
import org.eclipse.scada.ui.databinding.CommonListeningLabelProvider;
import org.eclipse.scada.ui.databinding.StyledViewerLabel;
import org.eclipse.scada.utils.core.runtime.AdapterHelper;

public class ConnectionLabelProvider extends CommonListeningLabelProvider {
    private final ResourceManager resource = new LocalResourceManager(JFaceResources.getResources());

    public ConnectionLabelProvider() {
        super("org.eclipse.scada.da.ui.connection.provider");
    }

    @Override
    public void dispose() {
        this.resource.dispose();
        super.dispose();
    }

    @Override
    public void updateLabel(final StyledViewerLabel label, final Object element) {
        final FolderEntry folderEntry = AdapterHelper.adapt(element, FolderEntry.class);
        if (folderEntry != null) {
            updateFolder(label, folderEntry);
        }

        final DataItemEntry dataItemEntry = AdapterHelper.adapt(element, DataItemEntry.class);
        if (dataItemEntry != null) {
            updateItem(label, dataItemEntry);
        }
    }

    private void updateItem(final StyledViewerLabel label, final DataItemEntry dataItemEntry) {
        String itemName = dataItemEntry.getName();
        if (itemName == null || itemName.length() == 0) {
            itemName = " ";
        }
        label.setText(itemName);

        if (dataItemEntry.getIODirections().containsAll(Arrays.asList(IODirection.INPUT, IODirection.OUTPUT))) {
            label.setImage(this.resource.createImage(
                    ImageDescriptor.createFromFile(ConnectionLabelProvider.class, "icons/item_io.gif")));
        } else if (dataItemEntry.getIODirections().contains(IODirection.INPUT)) {
            label.setImage(this.resource.createImage(
                    ImageDescriptor.createFromFile(ConnectionLabelProvider.class, "icons/item_i.gif")));
        } else if (dataItemEntry.getIODirections().contains(IODirection.OUTPUT)) {
            label.setImage(this.resource.createImage(
                    ImageDescriptor.createFromFile(ConnectionLabelProvider.class, "icons/item_o.gif")));
        } else {
            label.setImage(this.resource
                    .createImage(ImageDescriptor.createFromFile(ConnectionLabelProvider.class, "icons/item.gif")));
        }
    }

    private void updateFolder(final StyledViewerLabel label, final FolderEntry folderEntry) {
        label.setImage(this.resource
                .createImage(ImageDescriptor.createFromFile(ConnectionLabelProvider.class, "icons/folder.gif")));

        String folderName = folderEntry.getName();
        if (folderName == null || folderName.length() == 0) {
            folderName = " ";
        }
        label.setText(folderName);
    }

    @Override
    public String getDescription(final Object anElement) {
        final DataItemEntry dataItemEntry = AdapterHelper.adapt(anElement, DataItemEntry.class);
        if (dataItemEntry != null) {
            final String itemId = dataItemEntry.getId();

            final Variant value = dataItemEntry.getAttributes().get("description");
            if (value != null) {
                return String.format("%s (%s)", itemId, value.asString(""));
            } else {
                return itemId;
            }
        }

        final FolderEntry folderEntry = AdapterHelper.adapt(anElement, FolderEntry.class);
        if (folderEntry != null) {
            final Variant value = folderEntry.getAttributes().get("description");
            if (value != null) {
                return value.asString(null);
            }
        }
        return super.getDescription(anElement);
    }
}