Package org.eclipse.jst.jsp.ui

Source Code of org.eclipse.jst.jsp.ui.StructuredTextViewerConfigurationJSP

/*******************************************************************************
* Copyright (c) 2004, 2010 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
*     Matthias Fuessel, mat.fuessel@gmx.net - [177387] use base hyperlinking extension points    
*******************************************************************************/
package org.eclipse.jst.jsp.ui;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import org.eclipse.core.runtime.IPath;
import org.eclipse.jdt.ui.JavaUI;
import org.eclipse.jdt.ui.PreferenceConstants;
import org.eclipse.jdt.ui.text.IJavaPartitions;
import org.eclipse.jdt.ui.text.JavaSourceViewerConfiguration;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.text.IAutoEditStrategy;
import org.eclipse.jface.text.ITextDoubleClickStrategy;
import org.eclipse.jface.text.contentassist.IContentAssistProcessor;
import org.eclipse.jface.text.formatter.IContentFormatter;
import org.eclipse.jface.text.formatter.MultiPassContentFormatter;
import org.eclipse.jface.text.source.ISourceViewer;
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.jst.jsp.core.internal.provisional.contenttype.ContentTypeIdForJSP;
import org.eclipse.jst.jsp.core.internal.text.StructuredTextPartitionerForJSP;
import org.eclipse.jst.jsp.core.text.IJSPPartitions;
import org.eclipse.jst.jsp.ui.internal.autoedit.AutoEditStrategyForTabs;
import org.eclipse.jst.jsp.ui.internal.autoedit.StructuredAutoEditStrategyJSP;
import org.eclipse.jst.jsp.ui.internal.autoedit.StructuredAutoEditStrategyJSPJava;
import org.eclipse.jst.jsp.ui.internal.contentassist.JSPStructuredContentAssistProcessor;
import org.eclipse.jst.jsp.ui.internal.format.FormattingStrategyJSPJava;
import org.eclipse.jst.jsp.ui.internal.style.LineStyleProviderForJSP;
import org.eclipse.jst.jsp.ui.internal.style.java.LineStyleProviderForJava;
import org.eclipse.jst.jsp.ui.internal.style.jspel.LineStyleProviderForJSPEL;
import org.eclipse.wst.css.core.text.ICSSPartitions;
import org.eclipse.wst.html.core.internal.format.HTMLFormatProcessorImpl;
import org.eclipse.wst.html.core.internal.provisional.contenttype.ContentTypeIdForHTML;
import org.eclipse.wst.html.core.text.IHTMLPartitions;
import org.eclipse.wst.html.ui.StructuredTextViewerConfigurationHTML;
import org.eclipse.wst.sse.ui.StructuredTextViewerConfiguration;
import org.eclipse.wst.sse.ui.internal.format.StructuredFormattingStrategy;
import org.eclipse.wst.sse.ui.internal.provisional.style.LineStyleProvider;
import org.eclipse.wst.xml.core.text.IXMLPartitions;
import org.eclipse.wst.xml.ui.StructuredTextViewerConfigurationXML;
import org.eclipse.wst.xml.ui.internal.contentoutline.JFaceNodeLabelProvider;
import org.w3c.dom.Attr;
import org.w3c.dom.Node;

/**
* Configuration for a source viewer which shows JSP content.
* <p>
* Clients can subclass and override just those methods which must be specific
* to their needs.
* </p>
*
* @see org.eclipse.wst.sse.ui.StructuredTextViewerConfiguration
* @since 1.0
*/
public class StructuredTextViewerConfigurationJSP extends StructuredTextViewerConfiguration {
  /*
   * One instance per configuration because not sourceviewer-specific and
   * it's a String array
   */
  private String[] fConfiguredContentTypes;
  /*
   * One instance per configuration
   */
  private LineStyleProvider fLineStyleProviderForJava;
  /*
   * One instance per configuration
   */
  private LineStyleProvider fLineStyleProviderForJSP;
  /*
   * One instance per configuration
   */
  private LineStyleProvider fLineStyleProviderForJSPEL;
  private StructuredTextViewerConfiguration fHTMLSourceViewerConfiguration;
  private JavaSourceViewerConfiguration fJavaSourceViewerConfiguration;
  private StructuredTextViewerConfiguration fXMLSourceViewerConfiguration;
  private ILabelProvider fStatusLineLabelProvider;

  /**
   * Create new instance of StructuredTextViewerConfigurationJSP
   */
  public StructuredTextViewerConfigurationJSP() {
    // Must have empty constructor to createExecutableExtension
    super();
  }

  /*
   * (non-Javadoc)
   *
   * @see org.eclipse.jface.text.source.SourceViewerConfiguration#getAutoEditStrategies(org.eclipse.jface.text.source.ISourceViewer,
   *      java.lang.String)
   */
  public IAutoEditStrategy[] getAutoEditStrategies(ISourceViewer sourceViewer, String contentType) {
    IAutoEditStrategy[] strategies = null;

    if (contentType == IXMLPartitions.XML_DEFAULT) {
      // xml autoedit strategies
      strategies = getXMLSourceViewerConfiguration().getAutoEditStrategies(sourceViewer, contentType);
    }
    else if (contentType == IJSPPartitions.JSP_CONTENT_JAVA) {
      // jsp java autoedit strategies
      List allStrategies = new ArrayList(0);

      // add the scritplet autoedit strategy first
      allStrategies.add(new StructuredAutoEditStrategyJSPJava());
     
      IAutoEditStrategy[] javaStrategies = getJavaSourceViewerConfiguration().getAutoEditStrategies(sourceViewer, IJavaPartitions.JAVA_PARTITIONING);
      for (int i = 0; i < javaStrategies.length; i++) {
        allStrategies.add(javaStrategies[i]);
      }
      // be sure this is added last, after others, so it can modify
      // results from earlier steps.
      // add auto edit strategy that handles when tab key is pressed
      allStrategies.add(new AutoEditStrategyForTabs());

      strategies = (IAutoEditStrategy[]) allStrategies.toArray(new IAutoEditStrategy[allStrategies.size()]);
    }
    else if (contentType == IHTMLPartitions.HTML_DEFAULT || contentType == IHTMLPartitions.HTML_DECLARATION || contentType == IJSPPartitions.JSP_DIRECTIVE) {
      // html and jsp autoedit strategies
      List allStrategies = new ArrayList(0);

      // add the jsp autoedit strategy first then add all html's
      allStrategies.add(new StructuredAutoEditStrategyJSP());

      IAutoEditStrategy[] htmlStrategies = getHTMLSourceViewerConfiguration().getAutoEditStrategies(sourceViewer, contentType);
      for (int i = 0; i < htmlStrategies.length; i++) {
        allStrategies.add(htmlStrategies[i]);
      }

      strategies = (IAutoEditStrategy[]) allStrategies.toArray(new IAutoEditStrategy[allStrategies.size()]);
    }
    else {
      // default autoedit strategies
      List allStrategies = new ArrayList(0);

      IAutoEditStrategy[] superStrategies = super.getAutoEditStrategies(sourceViewer, contentType);
      for (int i = 0; i < superStrategies.length; i++) {
        allStrategies.add(superStrategies[i]);
      }

      // be sure this is added last, after others, so it can modify
      // results from earlier steps.
      // add auto edit strategy that handles when tab key is pressed
      allStrategies.add(new AutoEditStrategyForTabs());

      strategies = (IAutoEditStrategy[]) allStrategies.toArray(new IAutoEditStrategy[allStrategies.size()]);
    }

    return strategies;
  }

  public String[] getConfiguredContentTypes(ISourceViewer sourceViewer) {
    if (fConfiguredContentTypes == null) {
      /*
       * A little bit of cheating because assuming html's configured
       * content types will add default, unknown, and all xml configured
       * content types
       */
      String[] htmlTypes = getHTMLSourceViewerConfiguration().getConfiguredContentTypes(sourceViewer);
      String[] jspTypes = StructuredTextPartitionerForJSP.getConfiguredContentTypes();
      fConfiguredContentTypes = new String[htmlTypes.length + jspTypes.length];

      int index = 0;
      System.arraycopy(htmlTypes, 0, fConfiguredContentTypes, index, htmlTypes.length);
      System.arraycopy(jspTypes, 0, fConfiguredContentTypes, index += htmlTypes.length, jspTypes.length);
    }

    return fConfiguredContentTypes;
  }
 
  /**
   * @see org.eclipse.wst.sse.ui.StructuredTextViewerConfiguration#getContentAssistProcessors(
   *   org.eclipse.jface.text.source.ISourceViewer, java.lang.String)
   */
  protected IContentAssistProcessor[] getContentAssistProcessors(
      ISourceViewer sourceViewer, String partitionType) {
   
    IContentAssistProcessor processor = new JSPStructuredContentAssistProcessor(
        this.getContentAssistant(), partitionType, sourceViewer);
    return new IContentAssistProcessor[]{processor};
  }

  public IContentFormatter getContentFormatter(ISourceViewer sourceViewer) {
    IContentFormatter formatter = super.getContentFormatter(sourceViewer);
    // super was unable to create a formatter, probably because
    // sourceViewer does not have document set yet, so just create a
    // generic one
    if (!(formatter instanceof MultiPassContentFormatter))
      formatter = new MultiPassContentFormatter(getConfiguredDocumentPartitioning(sourceViewer), IXMLPartitions.XML_DEFAULT);

    MultiPassContentFormatter multiFormatter = (MultiPassContentFormatter) formatter;
    multiFormatter.setMasterStrategy(new StructuredFormattingStrategy(new HTMLFormatProcessorImpl()));
    multiFormatter.setSlaveStrategy(new FormattingStrategyJSPJava(), IJSPPartitions.JSP_CONTENT_JAVA);

    return formatter;
  }

  public ITextDoubleClickStrategy getDoubleClickStrategy(ISourceViewer sourceViewer, String contentType) {
    ITextDoubleClickStrategy strategy = null;

    // html or javascript
    if (contentType == IHTMLPartitions.HTML_DEFAULT || contentType == IHTMLPartitions.SCRIPT)
      strategy = getHTMLSourceViewerConfiguration().getDoubleClickStrategy(sourceViewer, contentType);
    else if (contentType == IJSPPartitions.JSP_CONTENT_JAVA || contentType == IJSPPartitions.JSP_CONTENT_JAVASCRIPT)
      // JSP Java or JSP JavaScript
      strategy = getJavaSourceViewerConfiguration().getDoubleClickStrategy(sourceViewer, contentType);
    else if (contentType == IJSPPartitions.JSP_DEFAULT)
      // JSP (just treat like html)
      strategy = getHTMLSourceViewerConfiguration().getDoubleClickStrategy(sourceViewer, IHTMLPartitions.HTML_DEFAULT);
    else
      strategy = super.getDoubleClickStrategy(sourceViewer, contentType);

    return strategy;
  }

  private StructuredTextViewerConfiguration getHTMLSourceViewerConfiguration() {
    if (fHTMLSourceViewerConfiguration == null) {
      fHTMLSourceViewerConfiguration = new StructuredTextViewerConfigurationHTML();
    }
    return fHTMLSourceViewerConfiguration;
  }

  public String[] getIndentPrefixes(ISourceViewer sourceViewer, String contentType) {
    String[] indentations = null;

    if (contentType == IXMLPartitions.XML_DEFAULT)
      indentations = getXMLSourceViewerConfiguration().getIndentPrefixes(sourceViewer, contentType);
    else
      indentations = getHTMLSourceViewerConfiguration().getIndentPrefixes(sourceViewer, contentType);

    return indentations;
  }

  private JavaSourceViewerConfiguration getJavaSourceViewerConfiguration() {
    if (fJavaSourceViewerConfiguration == null) {
      IPreferenceStore store = PreferenceConstants.getPreferenceStore();
      /*
       * NOTE: null text editor is being passed to
       * JavaSourceViewerConfiguration because
       * StructuredTextViewerConfiguration does not know current editor.
       * this is okay because editor is not needed in the cases we are
       * using javasourceviewerconfiguration.
       */
      fJavaSourceViewerConfiguration = new JavaSourceViewerConfiguration(JavaUI.getColorManager(), store, null, IJavaPartitions.JAVA_PARTITIONING);
    }
    return fJavaSourceViewerConfiguration;
  }

  public LineStyleProvider[] getLineStyleProviders(ISourceViewer sourceViewer, String partitionType) {
    LineStyleProvider[] providers = null;

    if (partitionType == IHTMLPartitions.HTML_DEFAULT || partitionType == IHTMLPartitions.HTML_COMMENT || partitionType == IHTMLPartitions.HTML_DECLARATION) {
      providers = getHTMLSourceViewerConfiguration().getLineStyleProviders(sourceViewer, IHTMLPartitions.HTML_DEFAULT);
    }
    else if (partitionType == IHTMLPartitions.SCRIPT || partitionType == IJSPPartitions.JSP_CONTENT_JAVASCRIPT) {
      providers = getHTMLSourceViewerConfiguration().getLineStyleProviders(sourceViewer, IHTMLPartitions.SCRIPT);
    }
    else if (partitionType == ICSSPartitions.STYLE || partitionType == ICSSPartitions.COMMENT) {
      providers = getHTMLSourceViewerConfiguration().getLineStyleProviders(sourceViewer, ICSSPartitions.STYLE);
    }
    else if (partitionType == IXMLPartitions.XML_DEFAULT || partitionType == IXMLPartitions.XML_CDATA || partitionType == IXMLPartitions.XML_COMMENT || partitionType == IXMLPartitions.XML_DECLARATION || partitionType == IXMLPartitions.XML_PI) {
      providers = getXMLSourceViewerConfiguration().getLineStyleProviders(sourceViewer, IXMLPartitions.XML_DEFAULT);
    }
    else if (partitionType == IJSPPartitions.JSP_CONTENT_JAVA) {
      providers = new LineStyleProvider[]{getLineStyleProviderForJava()};
    }
    else if (partitionType == IJSPPartitions.JSP_DEFAULT_EL) {
      providers = new LineStyleProvider[]{getLineStyleProviderForJSPEL()};
    }
    else if (partitionType == IJSPPartitions.JSP_COMMENT || partitionType == IJSPPartitions.JSP_CONTENT_DELIMITER || partitionType == IJSPPartitions.JSP_DEFAULT || partitionType == IJSPPartitions.JSP_DIRECTIVE) {
      providers = new LineStyleProvider[]{getLineStyleProviderForJSP()};
    }

    return providers;
  }

  private LineStyleProvider getLineStyleProviderForJava() {
    if (fLineStyleProviderForJava == null) {
      fLineStyleProviderForJava = new LineStyleProviderForJava();
    }
    return fLineStyleProviderForJava;
  }

  private LineStyleProvider getLineStyleProviderForJSP() {
    if (fLineStyleProviderForJSP == null) {
      fLineStyleProviderForJSP = new LineStyleProviderForJSP();
    }
    return fLineStyleProviderForJSP;
  }

  private LineStyleProvider getLineStyleProviderForJSPEL() {
    if (fLineStyleProviderForJSPEL == null) {
      fLineStyleProviderForJSPEL = new LineStyleProviderForJSPEL();
    }
    return fLineStyleProviderForJSPEL;
  }

  public ILabelProvider getStatusLineLabelProvider(ISourceViewer sourceViewer) {
    if (fStatusLineLabelProvider == null) {
      fStatusLineLabelProvider = new JFaceNodeLabelProvider() {
        public String getText(Object element) {
          if (element == null)
            return null;

          StringBuffer s = new StringBuffer();
          Node node = (Node) element;
          while (node != null) {
            if (node.getNodeType() != Node.DOCUMENT_NODE) {
              s.insert(0, super.getText(node));
            }

            if (node.getNodeType() == Node.ATTRIBUTE_NODE)
              node = ((Attr) node).getOwnerElement();
            else
              node = node.getParentNode();
         
            if (node != null && node.getNodeType() != Node.DOCUMENT_NODE) {
              s.insert(0, IPath.SEPARATOR);
            }
          }
          return s.toString();
        }

      };
    }
    return fStatusLineLabelProvider;
  }

  private StructuredTextViewerConfiguration getXMLSourceViewerConfiguration() {
    if (fXMLSourceViewerConfiguration == null) {
      fXMLSourceViewerConfiguration = new StructuredTextViewerConfigurationXML();
    }
    return fXMLSourceViewerConfiguration;
  }

  protected Map getHyperlinkDetectorTargets(ISourceViewer sourceViewer) {
    Map targets = super.getHyperlinkDetectorTargets(sourceViewer);
    targets.put(ContentTypeIdForJSP.ContentTypeID_JSP, null);

    // also add html & xml since there could be html/xml content in jsp
    // (just hope the hyperlink detectors will do additional checking)
    targets.put(ContentTypeIdForHTML.ContentTypeID_HTML, null);
    //targets.put(ContentTypeIdForXML.ContentTypeID_XML, null);
    return targets;
  }
}
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