json/bundles/org.eclipse.wst.json.ui/src/org/eclipse/wst/json/ui/internal/contentoutline/JFaceNodeLabelProvider.java

/*******************************************************************************
 * Copyright (c) 2001, 2015 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *     Jens Lukowski/Innoopract - initial renaming/restructuring
 *     Angelo Zerr <angelo.zerr@gmail.com> - copied from org.eclipse.wst.xml.ui.internal.contentoutline.JFaceNodeLabelProvider
 *                                           modified in order to process JSON Objects.      
 *******************************************************************************/
package org.eclipse.wst.json.ui.internal.contentoutline;

import org.eclipse.jface.viewers.ColumnLabelProvider;
import org.eclipse.jface.viewers.DelegatingStyledCellLabelProvider.IStyledLabelProvider;
import org.eclipse.jface.viewers.StyledString;
import org.eclipse.swt.graphics.Image;
import org.eclipse.wst.sse.core.internal.provisional.INodeAdapter;
import org.eclipse.wst.sse.core.internal.provisional.INodeNotifier;
import org.eclipse.wst.sse.ui.internal.contentoutline.IJFaceNodeAdapter;

/**
 * A (column) label provider backed by JFaceNodeAdapters.
 */
public class JFaceNodeLabelProvider extends ColumnLabelProvider implements
		IStyledLabelProvider {
	/**
	 * JFaceNodeLabelProvider constructor comment.
	 */
	public JFaceNodeLabelProvider() {
		super();
	}

	/**
	 * Returns the JFace adapter for the specified object.
	 * 
	 * @param adaptable
	 *            java.lang.Object The object to get the adapter for
	 */
	protected IJFaceNodeAdapter getAdapter(Object adaptable) {
		if (adaptable instanceof INodeNotifier) {
			INodeAdapter adapter = ((INodeNotifier) adaptable)
					.getAdapterFor(IJFaceNodeAdapter.class);
			if (adapter instanceof IJFaceNodeAdapter) {
				return (IJFaceNodeAdapter) adapter;
			}
		}
		return null;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jface.viewers.ILabelProvider#getImage(java.lang.Object)
	 */
	public Image getImage(Object element) {
		IJFaceNodeAdapter adapter = getAdapter(element);
		if (adapter != null)
			return adapter.getLabelImage(element);
		return super.getImage(element);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jface.viewers.ILabelProvider#getText(java.lang.Object)
	 */
	public String getText(Object element) {
		IJFaceNodeAdapter adapter = getAdapter(element);
		if (adapter != null)
			return adapter.getLabelText(element);
		return super.getText(element);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.eclipse.jface.viewers.IBaseLabelProvider#isLabelProperty(java.lang
	 * .Object, java.lang.String)
	 */
	public boolean isLabelProperty(Object element, String property) {
		return false;
	}

	@Override
	public StyledString getStyledText(Object element) {
		IJFaceNodeAdapter adapter = getAdapter(element);
		if (adapter != null && (adapter instanceof IStyledJFaceNodeAdapter)) {
			return ((IStyledJFaceNodeAdapter) adapter).getStyledLabelText(element);
		}
		return null;
	}
	
	@Override
	public void dispose() {		
		super.dispose();
	}
}