/*******************************************************************************
 * Copyright (c) 2007 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
 *******************************************************************************/
/**
 * 
 */
package org.eclipse.wst.jsdt.web.support.jsp;

import org.eclipse.jface.text.ITextHover;
import org.eclipse.jface.text.contentassist.IContentAssistProcessor;
import org.eclipse.jface.text.contentassist.IContentAssistant;
import org.eclipse.jface.text.formatter.IContentFormatter;
import org.eclipse.jface.text.formatter.MultiPassContentFormatter;
import org.eclipse.jface.text.information.IInformationPresenter;
import org.eclipse.jface.text.information.IInformationProvider;
import org.eclipse.jface.text.source.ISourceViewer;
import org.eclipse.jst.jsp.core.text.IJSPPartitions;
import org.eclipse.jst.jsp.ui.StructuredTextViewerConfigurationJSP;
import org.eclipse.wst.html.core.text.IHTMLPartitions;
import org.eclipse.wst.jsdt.web.ui.StructuredTextViewerConfigurationJSDT;
import org.eclipse.wst.jsdt.web.ui.internal.format.FormattingStrategyJSDT;
import org.eclipse.wst.sse.ui.StructuredTextViewerConfiguration;
import org.eclipse.wst.sse.ui.internal.provisional.style.LineStyleProvider;
/**
*
* Provisional API: This class/interface is part of an interim API that is still under development and expected to
* change significantly before reaching stability. It is being made available at this early stage to solicit feedback
* from pioneering adopters on the understanding that any code that uses this API will almost certainly be broken
* (repeatedly) as the API evolves.
*/
public class JSDTStructuredTextViewerConfigurationJSP extends StructuredTextViewerConfigurationJSP{

	private StructuredTextViewerConfiguration fHTMLSourceViewerConfiguration;

	private StructuredTextViewerConfiguration getJSDTHTMLSourceViewerConfiguration() {
		if (fHTMLSourceViewerConfiguration == null) {
			fHTMLSourceViewerConfiguration = new StructuredTextViewerConfigurationJSDT();
		}
		return fHTMLSourceViewerConfiguration;
	}
	
	protected IContentAssistProcessor[] getContentAssistProcessors(ISourceViewer sourceViewer, String partitionType) {
		IContentAssistProcessor[] processors = null;

		if (IHTMLPartitions.SCRIPT.equals(partitionType) || IJSPPartitions.JSP_CONTENT_JAVASCRIPT.equals(partitionType) || IHTMLPartitions.SCRIPT_EVENTHANDLER.equals(partitionType)) {
			// HTML JavaScript
			IContentAssistant htmlContentAssistant = getJSDTHTMLSourceViewerConfiguration().getContentAssistant(sourceViewer);
			IContentAssistProcessor processor = htmlContentAssistant.getContentAssistProcessor(IHTMLPartitions.SCRIPT);
			processors = new IContentAssistProcessor[]{processor};
		}
		else{
			processors = super.getContentAssistProcessors(sourceViewer, partitionType);
		}

		return processors;
	}
	
	public IContentFormatter getContentFormatter(ISourceViewer sourceViewer) {
		final IContentFormatter formatter = super.getContentFormatter(sourceViewer);
		if(formatter instanceof MultiPassContentFormatter) {
		/*
		 * Check for any externally supported auto edit strategies from EP.
		 * [Bradley Childs - childsb@us.ibm.com]
		 */
		String[] contentTypes = getConfiguredContentTypes(sourceViewer);
		for (int i = 0; i < contentTypes.length; i++) {
				if (IHTMLPartitions.SCRIPT.equals(contentTypes[i]) || IJSPPartitions.JSP_CONTENT_JAVASCRIPT.equals(contentTypes[i]) || IHTMLPartitions.SCRIPT_EVENTHANDLER.equals(contentTypes[i])) {
					((MultiPassContentFormatter) formatter).setSlaveStrategy(new FormattingStrategyJSDT(), contentTypes[i]);
				}
			}
		}
		return formatter;
	}
	
	public String[] getIndentPrefixes(ISourceViewer sourceViewer, String contentType) {
		String[] indentations = null;
		if (IHTMLPartitions.SCRIPT.equals(contentType) || IJSPPartitions.JSP_CONTENT_JAVASCRIPT.equals(contentType) || IHTMLPartitions.SCRIPT_EVENTHANDLER.equals(contentType))
			indentations = getJSDTHTMLSourceViewerConfiguration().getIndentPrefixes(sourceViewer, contentType);
		else
			indentations = super.getIndentPrefixes(sourceViewer, contentType);
		return indentations;
	}
	
	protected IInformationProvider getInformationProvider(ISourceViewer sourceViewer, String partitionType) {
		IInformationProvider provider = null;
		if (IHTMLPartitions.SCRIPT.equals(partitionType) || IJSPPartitions.JSP_CONTENT_JAVASCRIPT.equals(partitionType) || IHTMLPartitions.SCRIPT_EVENTHANDLER.equals(partitionType)) {
			// JavaScript
			IInformationPresenter htmlPresenter = getJSDTHTMLSourceViewerConfiguration().getInformationPresenter(sourceViewer);
			provider = htmlPresenter.getInformationProvider(IHTMLPartitions.SCRIPT);
		}
		if(provider == null){
			provider = super.getInformationProvider(sourceViewer, partitionType);
		}
		return provider;
	}
	
	public LineStyleProvider[] getLineStyleProviders(ISourceViewer sourceViewer, String partitionType) {
		LineStyleProvider[] providers = null;
		if (IHTMLPartitions.SCRIPT.equals(partitionType) || IJSPPartitions.JSP_CONTENT_JAVASCRIPT.equals(partitionType) || IHTMLPartitions.SCRIPT_EVENTHANDLER.equals(partitionType)) {
			providers = getJSDTHTMLSourceViewerConfiguration().getLineStyleProviders(sourceViewer, IHTMLPartitions.SCRIPT);
		}
		else{
			providers = super.getLineStyleProviders(sourceViewer, partitionType);
		}

		return providers;
	}
	
	public ITextHover getTextHover(ISourceViewer sourceViewer, String contentType, int stateMask) {
		ITextHover hover = null;

		if (IHTMLPartitions.SCRIPT.equals(contentType) || IJSPPartitions.JSP_CONTENT_JAVASCRIPT.equals(contentType) || IHTMLPartitions.SCRIPT_EVENTHANDLER.equals(contentType)) {
			// html and javascript regions
			hover = getJSDTHTMLSourceViewerConfiguration().getTextHover(sourceViewer, contentType, stateMask);
		}
		else {
			hover = super.getTextHover(sourceViewer, contentType);
		}
	
		return hover;
	}
}