/*******************************************************************************
 * Copyright (c) 2000, 2003 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 net.sourceforge.phpdt.internal.ui.text.java.hover;

import net.sourceforge.phpdt.core.IJavaElement;
import net.sourceforge.phpdt.internal.ui.text.JavaWordFinder;
import net.sourceforge.phpdt.ui.text.java.hover.IJavaEditorTextHover;

import org.eclipse.jface.text.IRegion;
import org.eclipse.jface.text.ITextViewer;
import org.eclipse.ui.IEditorPart;

/**
 * Abstract class for providing hover information for Java elements.
 * 
 * @since 2.1
 */
public abstract class AbstractJavaEditorTextHover implements IJavaEditorTextHover {


	private IEditorPart fEditor;
	

	/*
	 * @see IJavaEditorTextHover#setEditor(IEditorPart)
	 */
	public void setEditor(IEditorPart editor) {
		fEditor= editor;
	}

	protected IEditorPart getEditor() {
		return fEditor;
	}

//	protected ICodeAssist getCodeAssist() {
//		if (fEditor != null) {
//			IEditorInput input= fEditor.getEditorInput();
//			if (input instanceof IClassFileEditorInput) {
//				IClassFileEditorInput cfeInput= (IClassFileEditorInput) input;
//				return cfeInput.getClassFile();
//			}
//			
//			IWorkingCopyManager manager= PHPeclipsePlugin.getDefault().getWorkingCopyManager();				
//			return manager.getWorkingCopy(input);
//		}
//		
//		return null;
//	}
	
	/*
	 * @see ITextHover#getHoverRegion(ITextViewer, int)
	 */
	public IRegion getHoverRegion(ITextViewer textViewer, int offset) {
		return JavaWordFinder.findWord(textViewer.getDocument(), offset);
	}
	
	/*
	 * @see ITextHover#getHoverInfo(ITextViewer, IRegion)
	 */
	public String getHoverInfo(ITextViewer textViewer, IRegion hoverRegion) {
	
//		ICodeAssist resolve= getCodeAssist();
//		if (resolve != null) {
//			try {
//				IJavaElement[] result= null;
//				
//				synchronized (resolve) {
//					result= resolve.codeSelect(hoverRegion.getOffset(), hoverRegion.getLength());
//				}
//				
//				if (result == null)
//					return null;
//				
//				int nResults= result.length;	
//				if (nResults == 0)
//					return null;
//				
//				return getHoverInfo(result);
//				
//			} catch (JavaModelException x) {
//				PHPeclipsePlugin.log(x.getStatus());
//			}
//		}
		return null;
	}

	/**
	 * Provides hover information for the given Java elements.
	 * 
	 * @return the hover information string
	 * @since 2.1
	 */
	protected String getHoverInfo(IJavaElement[] javaElements) {
		return null;
	}
}