/*******************************************************************************
 * Copyright (c) 2008-2010 Sonatype, Inc.
 * 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:
 *      Sonatype, Inc. - initial API and implementation
 *******************************************************************************/

package org.eclipse.m2e.editor.xml;

import java.util.Collections;
import java.util.List;

import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jface.text.ITextHover;
import org.eclipse.jface.text.contentassist.IContentAssistProcessor;
import org.eclipse.jface.text.hyperlink.IHyperlinkDetector;
import org.eclipse.jface.text.quickassist.IQuickAssistAssistant;
import org.eclipse.jface.text.source.ISourceViewer;
import org.eclipse.wst.sse.ui.contentassist.CompletionProposalInvocationContext;
import org.eclipse.wst.xml.ui.StructuredTextViewerConfigurationXML;
import org.eclipse.wst.xml.ui.internal.contentassist.ProposalComparator;
import org.eclipse.wst.xml.ui.internal.contentassist.XMLStructuredContentAssistProcessor;


/**
 * @author Lukas Krecan
 */
@SuppressWarnings("restriction")
public class PomStructuredTextViewConfiguration extends StructuredTextViewerConfigurationXML {

  @Override
  protected IContentAssistProcessor[] getContentAssistProcessors(ISourceViewer sourceViewer, String partitionType) {
    IContentAssistProcessor processor = new XMLStructuredContentAssistProcessor(this.getContentAssistant(),
        partitionType, sourceViewer) {
      @SuppressWarnings({"unchecked", "rawtypes"})
      protected List filterAndSortProposals(List proposals, IProgressMonitor monitor,
          CompletionProposalInvocationContext context) {
        Collections.sort(proposals, new ProposalComparator());
        return proposals;
      }
    };
    return new IContentAssistProcessor[] {processor};
  }

  @Override
  public ITextHover getTextHover(ISourceViewer sourceViewer, String contentType, int stateMask) {
    return new PomTextHover(sourceViewer, contentType, stateMask);
  }

  @Override
  public IHyperlinkDetector[] getHyperlinkDetectors(ISourceViewer sourceViewer) {
    IHyperlinkDetector[] detectors = super.getHyperlinkDetectors(sourceViewer);
    if(detectors == null) {
      detectors = new IHyperlinkDetector[0];
    }

    IHyperlinkDetector[] pomDetectors = new IHyperlinkDetector[detectors.length + 1];
    pomDetectors[0] = new PomHyperlinkDetector();
    System.arraycopy(detectors, 0, pomDetectors, 1, detectors.length);

    return pomDetectors;
  }

  public IQuickAssistAssistant getQuickAssistAssistant(ISourceViewer sourceViewer) {
    //not explicitly setting processor results in having a bunch of generic quick fixes around..
    //also see org.eclipse.wst.sse.ui.quickFixProcessor extension point regarding the way to declaratively
    //register the pomquickassistprocessor
    IQuickAssistAssistant quickAssistAssistant = super.getQuickAssistAssistant(sourceViewer);
    quickAssistAssistant.setQuickAssistProcessor(new PomQuickAssistProcessor());
    return quickAssistAssistant;
  }

}