gov.redhawk.ide.sdr.internal.ui.IdlLibraryDecorator.java Source code

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Here is the source code for gov.redhawk.ide.sdr.internal.ui.IdlLibraryDecorator.java

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/*******************************************************************************
 * This file is protected by Copyright. 
 * Please refer to the COPYRIGHT file distributed with this source distribution.
 *
 * This file is part of REDHAWK IDE.
 *
 * 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
 *******************************************************************************/
package gov.redhawk.ide.sdr.internal.ui;

import gov.redhawk.eclipsecorba.library.IdlLibrary;
import gov.redhawk.eclipsecorba.library.LibraryPackage;
import gov.redhawk.model.sca.commands.ScaModelCommand;

import org.eclipse.core.runtime.IStatus;
import org.eclipse.emf.common.notify.Adapter;
import org.eclipse.emf.common.notify.impl.AdapterImpl;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.jface.viewers.IDecoration;
import org.eclipse.jface.viewers.ILightweightLabelDecorator;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.LabelProviderChangedEvent;
import org.eclipse.ui.ISharedImages;
import org.eclipse.ui.PlatformUI;

/**
 * 
 */
public class IdlLibraryDecorator extends LabelProvider implements ILightweightLabelDecorator {

    private final Adapter libraryListener = new AdapterImpl() {
        @Override
        public void notifyChanged(final org.eclipse.emf.common.notify.Notification msg) {
            if (IdlLibraryDecorator.this.disposed) {
                if (msg.getNotifier() instanceof EObject) {
                    ((EObject) msg.getNotifier()).eAdapters().remove(this);
                }
                return;
            }
            if (msg.isTouch()) {
                return;
            }
            switch (msg.getFeatureID(IdlLibrary.class)) {
            case LibraryPackage.IDL_LIBRARY__LOAD_STATUS:
                final Object oldValue = msg.getOldValue();
                final Object newValue = msg.getNewValue();
                if (oldValue instanceof IStatus && newValue instanceof IStatus) {
                    final IStatus newStatus = (IStatus) newValue;
                    final IStatus oldStatus = (IStatus) oldValue;
                    if (newStatus.getSeverity() != oldStatus.getSeverity()) {
                        fireStatusChanged(msg.getNotifier());
                    }
                } else {
                    fireStatusChanged(msg.getNotifier());
                }
                break;
            default:
                break;
            }
        }
    };
    private boolean disposed;

    private void fireStatusChanged(final Object object) {
        final LabelProviderChangedEvent event = new LabelProviderChangedEvent(this, object);
        fireLabelProviderChanged(event);
    }

    @Override
    public void dispose() {
        this.disposed = true;
        super.dispose();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void decorate(final Object element, final IDecoration decoration) {
        if (element instanceof IdlLibrary) {
            final IdlLibrary library = (IdlLibrary) element;
            ScaModelCommand.execute(library, new ScaModelCommand() {

                @Override
                public void execute() {
                    if (!library.eAdapters().contains(libraryListener)) {
                        library.eAdapters().add(libraryListener);
                    }
                }
            });
            if (library.getLoadStatus() != null) {
                final ISharedImages sharedImages = PlatformUI.getWorkbench().getSharedImages();
                final IStatus status = library.getLoadStatus();
                switch (status.getSeverity()) {
                case IStatus.WARNING:
                    decoration.addOverlay(sharedImages.getImageDescriptor(ISharedImages.IMG_DEC_FIELD_WARNING),
                            IDecoration.BOTTOM_RIGHT);
                    break;
                case IStatus.ERROR:
                    decoration.addOverlay(sharedImages.getImageDescriptor(ISharedImages.IMG_DEC_FIELD_ERROR),
                            IDecoration.BOTTOM_RIGHT);
                    break;
                default:
                    break;
                }
            }
        }

    }

}