/*******************************************************************************
 * Copyright (c) 2000, 2004 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.search.internal.ui.text;

import java.text.MessageFormat;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.IPath;
import org.eclipse.jface.viewers.ILabelProviderListener;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.search.internal.ui.SearchMessages;
import org.eclipse.search.ui.text.AbstractTextSearchResult;
import org.eclipse.search.ui.text.AbstractTextSearchViewPage;
import org.eclipse.swt.graphics.Image;
import org.eclipse.ui.model.WorkbenchLabelProvider;


public class FileLabelProvider extends LabelProvider {
		
	public static final int SHOW_LABEL= 1;
	public static final int SHOW_LABEL_PATH= 2;
	public static final int SHOW_PATH_LABEL= 3;
	public static final int SHOW_PATH= 4;
	
	private static final String fgSeparatorFormat= "{0} - {1}"; //$NON-NLS-1$
	
	private WorkbenchLabelProvider fLabelProvider;
	private AbstractTextSearchViewPage fPage;
		
	private int fOrder;
	private String[] fArgs= new String[2];

	public FileLabelProvider(AbstractTextSearchViewPage page, int orderFlag) {
		fLabelProvider= new WorkbenchLabelProvider();
		fOrder= orderFlag;
		fPage= page;
	}

	public void setOrder(int orderFlag) {
		fOrder= orderFlag;
	}
	
	public int getOrder() {
		return fOrder;
	}

	public String getText(Object element) {
		if (!(element instanceof IResource))
			return null; //$NON-NLS-1$

		IResource resource= (IResource)element;
		String text= null;

		if (!resource.exists())
			text= SearchMessages.getString("FileLabelProvider.removed_resource.label"); //$NON-NLS-1$
		
		else {
			IPath path= resource.getFullPath().removeLastSegments(1);
			if (path.getDevice() == null)
				path= path.makeRelative();
			if (fOrder == SHOW_LABEL || fOrder == SHOW_LABEL_PATH) {
				text= fLabelProvider.getText(resource);
				if (path != null && fOrder == SHOW_LABEL_PATH) {
					fArgs[0]= text;
					fArgs[1]= path.toString();
					text= MessageFormat.format(fgSeparatorFormat, fArgs);
				}
			} else {
				if (path != null)
					text= path.toString();
				else
					text= ""; //$NON-NLS-1$
				if (fOrder == SHOW_PATH_LABEL) {
					fArgs[0]= text;
					fArgs[1]= fLabelProvider.getText(resource);
					text= MessageFormat.format(fgSeparatorFormat, fArgs);
				}
			}
		}
		
		int matchCount= 0;
		AbstractTextSearchResult result= fPage.getInput();
		if (result != null)
			matchCount= result.getMatchCount(element);
		if (matchCount <= 1)
			return text;
		String format= SearchMessages.getString("FileLabelProvider.count.format"); //$NON-NLS-1$
		return MessageFormat.format(format, new Object[] { text, new Integer(matchCount) });
	}

	public Image getImage(Object element) {
		if (!(element instanceof IResource))
			return null; //$NON-NLS-1$

		IResource resource= (IResource)element;
		Image image= fLabelProvider.getImage(resource);
		return image;
	}

	public void dispose() {
		super.dispose();
		fLabelProvider.dispose();
	}

	public boolean isLabelProperty(Object element, String property) {
		return fLabelProvider.isLabelProperty(element, property);
	}

	public void removeListener(ILabelProviderListener listener) {
		super.removeListener(listener);
		fLabelProvider.removeListener(listener);
	}

	public void addListener(ILabelProviderListener listener) {
		super.addListener(listener);
		fLabelProvider.addListener(listener);
	}
}
