/*******************************************************************************
 * Copyright (c) 2000, 2008 IBM Corporation and others.
 *
 * 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
 *******************************************************************************/
package org.eclipse.ui.examples.templateeditor.editors;

import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.ITextDoubleClickStrategy;
import org.eclipse.jface.text.TextAttribute;
import org.eclipse.jface.text.contentassist.ContentAssistant;
import org.eclipse.jface.text.contentassist.IContentAssistProcessor;
import org.eclipse.jface.text.contentassist.IContentAssistant;
import org.eclipse.jface.text.presentation.IPresentationReconciler;
import org.eclipse.jface.text.presentation.PresentationReconciler;
import org.eclipse.jface.text.rules.DefaultDamagerRepairer;
import org.eclipse.jface.text.rules.Token;
import org.eclipse.jface.text.source.ISourceViewer;

import org.eclipse.ui.examples.templateeditor.template.XMLCompletionProcessor;

import org.eclipse.ui.editors.text.TextSourceViewerConfiguration;

public class XMLConfiguration extends TextSourceViewerConfiguration {

	private XMLDoubleClickStrategy doubleClickStrategy;
	private XMLTagScanner tagScanner;
	private XMLScanner scanner;
	private ColorManager colorManager;

	public XMLConfiguration(ColorManager colorManager) {
		this.colorManager= colorManager;
	}

	@Override
	public String[] getConfiguredContentTypes(ISourceViewer sourceViewer) {
		return new String[]{IDocument.DEFAULT_CONTENT_TYPE, XMLPartitionScanner.XML_COMMENT,
				XMLPartitionScanner.XML_TAG};
	}

	@Override
	public ITextDoubleClickStrategy getDoubleClickStrategy(ISourceViewer sourceViewer, String contentType) {
		if (doubleClickStrategy == null)
			doubleClickStrategy= new XMLDoubleClickStrategy();
		return doubleClickStrategy;
	}

	protected XMLScanner getXMLScanner() {
		if (scanner == null) {
			scanner= new XMLScanner(colorManager);
			scanner.setDefaultReturnToken(new Token(
					new TextAttribute(colorManager.getColor(IXMLColorConstants.DEFAULT))));
		}
		return scanner;
	}

	protected XMLTagScanner getXMLTagScanner() {
		if (tagScanner == null) {
			tagScanner= new XMLTagScanner(colorManager);
			tagScanner
					.setDefaultReturnToken(new Token(new TextAttribute(colorManager.getColor(IXMLColorConstants.TAG))));
		}
		return tagScanner;
	}

	@Override
	public IPresentationReconciler getPresentationReconciler(ISourceViewer sourceViewer) {
		PresentationReconciler reconciler= new PresentationReconciler();

		DefaultDamagerRepairer dr= new DefaultDamagerRepairer(getXMLTagScanner());
		reconciler.setDamager(dr, XMLPartitionScanner.XML_TAG);
		reconciler.setRepairer(dr, XMLPartitionScanner.XML_TAG);

		dr= new DefaultDamagerRepairer(getXMLScanner());
		reconciler.setDamager(dr, IDocument.DEFAULT_CONTENT_TYPE);
		reconciler.setRepairer(dr, IDocument.DEFAULT_CONTENT_TYPE);

		NonRuleBasedDamagerRepairer ndr= new NonRuleBasedDamagerRepairer(new TextAttribute(colorManager
				.getColor(IXMLColorConstants.XML_COMMENT)));
		reconciler.setDamager(ndr, XMLPartitionScanner.XML_COMMENT);
		reconciler.setRepairer(ndr, XMLPartitionScanner.XML_COMMENT);

		return reconciler;
	}

	@Override
	public IContentAssistant getContentAssistant(ISourceViewer sourceViewer) {
		ContentAssistant assistant= new ContentAssistant();
		assistant.setDocumentPartitioning(getConfiguredDocumentPartitioning(sourceViewer));

		IContentAssistProcessor processor= new XMLCompletionProcessor();
		assistant.setContentAssistProcessor(processor, IDocument.DEFAULT_CONTENT_TYPE);
		assistant.setContentAssistProcessor(processor, XMLPartitionScanner.XML_TAG);

		assistant.setContextInformationPopupOrientation(IContentAssistant.CONTEXT_INFO_ABOVE);
		assistant.setInformationControlCreator(getInformationControlCreator(sourceViewer));

		return assistant;
	}

}
