PetalsProjectLabelProvider.java

/******************************************************************************
 * Copyright (c) 2010-2013, Linagora
 *
 * 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:
 * 		Linagora - initial API and implementation
 *******************************************************************************/
 
package com.ebmwebsourcing.petals.common.internal.provisional.projectscnf;

import org.eclipse.core.resources.IMarker;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IStorage;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.jdt.core.IPackageFragment;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.DelegatingStyledCellLabelProvider.IStyledLabelProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.StyledString;
import org.eclipse.swt.graphics.Image;
import org.eclipse.ui.model.IWorkbenchAdapter;

import com.ebmwebsourcing.petals.common.croquis.internal.projectscnf.PetalsCroquisLabelProvider;
import com.ebmwebsourcing.petals.common.internal.PetalsCommonPlugin;
import com.ebmwebsourcing.petals.common.internal.projectscnf.PetalsProjectManager;
import com.ebmwebsourcing.petals.common.internal.provisional.utils.ImageRegistry;
import com.ebmwebsourcing.petals.common.internal.provisional.utils.PlatformUtils;

/**
 * A styled label provider for the Petals project explorer.
 * @author Vincent Zurczak - EBM WebSourcing
 */
public class PetalsProjectLabelProvider extends LabelProvider implements IStyledLabelProvider {

	protected final ImageRegistry imageRegistry;


	/**
	 * Constructor.
	 */
	public PetalsProjectLabelProvider() {
		this.imageRegistry = new ImageRegistry();
	}


	/*
	 * (non-Javadoc)
	 * @see org.eclipse.jface.viewers.BaseLabelProvider
	 * #dispose()
	 */
	@Override
	public void dispose() {
		this.imageRegistry.dispose();
		super.dispose();
	}


	/*
	 * (non-Javadoc)
	 * @see org.eclipse.jface.viewers.DelegatingStyledCellLabelProvider.IStyledLabelProvider
	 * #getStyledText(java.lang.Object)
	 */
	@Override
	public StyledString getStyledText( Object element ) {
		String label = getText( element );
		return label != null ? new StyledString( label ) : null;
	}


	/*
	 * (non-Javadoc)
	 * @see org.eclipse.jface.viewers.LabelProvider
	 * #getText(java.lang.Object)
	 */
	@Override
	public String getText( Object element ) {

		if( element instanceof PetalsProjectCategory )
			return ((PetalsProjectCategory) element).getLabel();

		// Hack for croquis
		if( PetalsCroquisLabelProvider.getCroquisExtension( element ) != null )
			return null;
		// End of hack

		if( element instanceof IResource )
			return ((IResource) element).getName();

		if( element instanceof IStorage )
			return ((IStorage) element).getName();

		if( element instanceof IPackageFragment ) {
			String result = ((IPackageFragment) element).isDefaultPackage() ? "default" : ((IPackageFragment) element).getElementName();
			if( PetalsProjectManager.isJavaLayoutFlat())
				return  result;

			PetalsCnfPackageFragment ppf = PetalsProjectManager.INSTANCE.dirtyViewerMap.get( element );
			if( ppf == null )
				return "oops";

			Object parent = ppf.getParent();
			if( parent instanceof PetalsCnfPackageFragment
					&& ((PetalsCnfPackageFragment) parent).getFragment() != null ) {
				String parentName = ((PetalsCnfPackageFragment) parent).getFragment().getElementName();
				result = result.substring( parentName.length() + 1 );
			}

			return result;
		}

		String result = "";
		IWorkbenchAdapter adapter = (IWorkbenchAdapter) PlatformUtils.getAdapter( element, IWorkbenchAdapter.class );
		if( adapter != null )
			result = adapter.getLabel( element );

		return result;
	}


	/*
	 * (non-Javadoc)
	 * @see org.eclipse.jface.viewers.LabelProvider
	 * #getImage(java.lang.Object)
	 */
	@Override
	public Image getImage( Object element ) {

		// Find the image descriptor
		ImageDescriptor descriptor = null;
		IWorkbenchAdapter adapter = (IWorkbenchAdapter) PlatformUtils.getAdapter( element, IWorkbenchAdapter.class );
		if( adapter != null )
			descriptor = adapter.getImageDescriptor( element );
		else if( element instanceof PetalsProjectCategory )
			descriptor = ((PetalsProjectCategory) element).getImageDescriptor();

		// Get the image
		Image img = null;
		if( descriptor != null ) {

			IResource res = (IResource) PlatformUtils.getAdapter( element, IResource.class );
			if( res != null ) {
				if( res.isAccessible()) {
					try {
						int severity = res.findMaxProblemSeverity( null, false, IResource.DEPTH_INFINITE );
						if( severity == IMarker.SEVERITY_ERROR )
							img = this.imageRegistry.getErrorImage( descriptor );
						else if( severity == IMarker.SEVERITY_WARNING )
							img = this.imageRegistry.getWarningImage( descriptor );
						else
							img = this.imageRegistry.getBaseImage( descriptor );

					} catch( CoreException e ) {
						PetalsCommonPlugin.log( e, IStatus.WARNING );
					}
				}

				// Not accessible
				else {
					img = this.imageRegistry.getBaseImage( descriptor );
				}
			}
			else {
				img = this.imageRegistry.getBaseImage( descriptor );
			}
		}

		return img;
	}
}