| // SequencersView.java |
| package org.eclipse.stem.ui.views; |
| |
| /******************************************************************************* |
| * Copyright (c) 2006 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| |
| import org.eclipse.stem.core.Constants; |
| import org.eclipse.stem.ui.Activator; |
| import org.eclipse.stem.ui.ISharedImages; |
| import org.eclipse.swt.graphics.Image; |
| |
| /** |
| * This class represents the eclipse view of the |
| * {@link org.eclipse.stem.core.sequencer.Sequencer}s that have been |
| * imported into eclipse as plug-ins. |
| * |
| */ |
| public class SequencersView extends IdentifiablePluginView { |
| /** |
| * The identifier of the Sequencers View |
| */ |
| public static final String ID_SEQUENCERS_VIEW = "org.eclipse.stem.ui.views.sequencers"; //$NON-NLS-1$ |
| |
| /** |
| * @see org.eclipse.stem.ui.views.ExecutablePluginView#getInput() |
| */ |
| @Override |
| protected IdentifiableViewModel getInput() { |
| return SequencerModel.getModel(); |
| } // ExecutableViewModel |
| |
| /** |
| * @see org.eclipse.stem.ui.views.IdentifiablePluginView#getIdentifiablePluginViewLabelContentProvider() |
| */ |
| @Override |
| protected IdentifiablePluginViewLabelContentProvider getIdentifiablePluginViewLabelContentProvider() { |
| return new SequencerViewTreeContentProvider(); |
| } // getIdentifiablePluginViewLabelContentProvider |
| |
| /** |
| * This class represents the model of the Sequencers that extend a |
| * org.eclipse.stem.core.sequencers extension point. |
| */ |
| private static class SequencerModel extends IdentifiableViewModel { |
| |
| // The singleton instance |
| private static SequencerModel seqModel; |
| |
| /** |
| * Constructor |
| */ |
| public SequencerModel() { |
| super(Constants.ID_SEQUENCER_EXTENSION_POINT); |
| } // SequencerModel |
| |
| /** |
| * @return the singleton instance of the model |
| */ |
| public static SequencerModel getModel() { |
| // Do we need to make the model? |
| if (seqModel == null) { |
| // Yes |
| seqModel = new SequencerModel(); |
| } |
| return seqModel; |
| } // getModel |
| } // SequencerModel |
| |
| /** |
| * This class is the content provider of the sequencers view. |
| */ |
| protected static class SequencerViewTreeContentProvider extends |
| IdentifiablePluginViewLabelContentProvider { |
| |
| // This is the image used to represent sequencers in the sequencers view |
| static Image sequencerIcon = null; |
| |
| // If true then we've never tried to get the icon |
| static boolean sequencerIconFirstTime = true; |
| |
| /** |
| * @see org.eclipse.stem.ui.views.IdentifiablePluginView.IdentifiablePluginViewLabelContentProvider#getImage(java.lang.Object) |
| */ |
| @Override |
| public Image getImage(final Object element) { |
| return (element instanceof IdentifiableDelegate) ? getDiseaseIcon() |
| : super.getImage(element); |
| } // getImage |
| |
| /** |
| * @return the icon to be used to represent sequencers, or null if it |
| * can't be loaded. |
| */ |
| private Image getDiseaseIcon() { |
| // Should we try to load the icon? |
| if (sequencerIconFirstTime && sequencerIcon == null) { |
| // Yes |
| sequencerIconFirstTime = false; |
| |
| sequencerIcon = Activator.getDefault().getImageRegistry().get( |
| ISharedImages.SEQUENCER_ICON); |
| } // if we should load the icon |
| return sequencerIcon; |
| } // getdiseaseIcon |
| } // SequencerViewTreeContentProvider |
| } // SequencersView |