core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/text/CSourceViewerConfiguration.java - cdt/org.eclipse.cdt - Git at Google

 package org.eclipse.cdt.internal.ui.text;
 /*
  * (c) Copyright IBM Corp. 2000, 2001.
  * All Rights Reserved.
  */

 import java.util.HashMap;
 import java.util.Vector;

 import org.eclipse.cdt.internal.ui.editor.CEditor;
 import org.eclipse.cdt.internal.ui.editor.CEditorTextHoverDispatcher;
 import org.eclipse.cdt.internal.ui.text.contentassist.*;
 import org.eclipse.cdt.ui.CUIPlugin;
 import org.eclipse.cdt.ui.ICDTConstants;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IConfigurationElement;
 import org.eclipse.core.runtime.IExtension;
 import org.eclipse.core.runtime.IExtensionPoint;
 import org.eclipse.core.runtime.IPluginRegistry;
 import org.eclipse.core.runtime.Platform;
 import org.eclipse.jface.preference.IPreferenceStore;
 import org.eclipse.jface.text.DefaultInformationControl;
 import org.eclipse.jface.text.IAutoIndentStrategy;
 import org.eclipse.jface.text.IDocument;
 import org.eclipse.jface.text.IInformationControl;
 import org.eclipse.jface.text.IInformationControlCreator;
 import org.eclipse.jface.text.ITextDoubleClickStrategy;
 import org.eclipse.jface.text.ITextHover;
 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.formatter.ContentFormatter;
 import org.eclipse.jface.text.formatter.IContentFormatter;
 import org.eclipse.jface.text.formatter.IFormattingStrategy;
 import org.eclipse.jface.text.information.IInformationPresenter;
 import org.eclipse.jface.text.presentation.IPresentationReconciler;
 import org.eclipse.jface.text.presentation.PresentationReconciler;
 import org.eclipse.jface.text.reconciler.IReconciler;
 import org.eclipse.jface.text.reconciler.Reconciler;
 import org.eclipse.jface.text.rules.DefaultDamagerRepairer;
 import org.eclipse.jface.text.rules.DefaultPartitioner;
 import org.eclipse.jface.text.rules.RuleBasedScanner;
 import org.eclipse.jface.text.source.IAnnotationHover;
 import org.eclipse.jface.text.source.ISourceViewer;
 import org.eclipse.jface.text.source.SourceViewerConfiguration;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.widgets.Shell;
 import org.eclipse.ui.texteditor.ITextEditor;


 /**
  * Configuration for an <code>SourceViewer</code> which shows C code.
  */
 public class CSourceViewerConfiguration extends SourceViewerConfiguration {

 	/** Key used to look up display tab width */
 	public final static String PREFERENCE_TAB_WIDTH= "org.eclipse.cdt.editor.tab.width"; //$NON-NLS-1$
 	/** Key used to look up code formatter tab size */
 	private final static String CODE_FORMATTER_TAB_SIZE= "org.eclipse.cdt.formatter.tabulation.size"; //$NON-NLS-1$
 	/** Key used to look up code formatter tab character */
 	private final static String CODE_FORMATTER_TAB_CHAR= "org.eclipse.cdt.formatter.tabulation.char"; //$NON-NLS-1$

 	private CTextTools fTextTools;
 	private CEditor fEditor;

 	/**
 	 * Creates a new C source viewer configuration for viewers in the given editor using
 	 * the given C tools collection.
 	 *
 	 * @param tools the C text tools collection to be used
 	 * @param editor the editor in which the configured viewer will reside
 	 */
 	public CSourceViewerConfiguration(CTextTools tools, CEditor editor) {
 		fTextTools= tools;
 		fEditor= editor;
 	}

 	/**
 	 * Returns the C multiline comment scanner for this configuration.
 	 *
 	 * @return the C multiline comment scanner
 	 */
 	protected RuleBasedScanner getMultilineCommentScanner() {
 		return fTextTools.getMultilineCommentScanner();
 	}

 	/**
 	 * Returns the C singleline comment scanner for this configuration.
 	 *
 	 * @return the C singleline comment scanner
 	 */
 	protected RuleBasedScanner getSinglelineCommentScanner() {
 		return fTextTools.getSinglelineCommentScanner();
 	}

 	/**
 	 * Returns the C string scanner for this configuration.
 	 *
 	 * @return the C string scanner
 	 */
 	protected RuleBasedScanner getStringScanner() {
 		return fTextTools.getStringScanner();
 	}

 	/**
 	 * Returns the color manager for this configuration.
 	 *
 	 * @return the color manager
 	 */
 	protected IColorManager getColorManager() {
 		return fTextTools.getColorManager();
 	}

 	/**
 	 * Returns the editor in which the configured viewer(s) will reside.
 	 *
 	 * @return the enclosing editor
 	 */
 	protected ITextEditor getEditor() {
 		return fEditor;
 	}

 	/**
 	 * @see ISourceViewerConfiguration#getPresentationReconciler(ISourceViewer)
 	 */
 	public IPresentationReconciler getPresentationReconciler(ISourceViewer sourceViewer) {

 		PresentationReconciler reconciler= new PresentationReconciler();

 		RuleBasedScanner scanner;

 		if(sourceViewer instanceof CEditor.AdaptedSourceViewer) {
 			String language = ((CEditor.AdaptedSourceViewer)sourceViewer).getDisplayLanguage();
 			if(language != null && language.equals(CEditor.LANGUAGE_CPP)) {
 				scanner= fTextTools.getCppCodeScanner();
 			} else {
 				scanner= fTextTools.getCCodeScanner();
 			}
 		} else {
 			scanner= fTextTools.getCCodeScanner();
 		}

 		DefaultDamagerRepairer dr= new DefaultDamagerRepairer(scanner);

 		reconciler.setDamager(dr, IDocument.DEFAULT_CONTENT_TYPE);
 		reconciler.setRepairer(dr, IDocument.DEFAULT_CONTENT_TYPE);

 		//TextAttribute attr = new TextAttribute(manager.getColor(ICColorConstants.C_DEFAULT));

 		dr= new DefaultDamagerRepairer(getSinglelineCommentScanner());
 		reconciler.setDamager(dr, CPartitionScanner.C_SINGLE_LINE_COMMENT);
 		reconciler.setRepairer(dr, CPartitionScanner.C_SINGLE_LINE_COMMENT);

 		dr= new DefaultDamagerRepairer(getStringScanner());
 		reconciler.setDamager(dr, CPartitionScanner.C_STRING);
 		reconciler.setRepairer(dr, CPartitionScanner.C_STRING);

 		dr= new DefaultDamagerRepairer(getMultilineCommentScanner());
 		reconciler.setDamager(dr, CPartitionScanner.C_MULTILINE_COMMENT);
 		reconciler.setRepairer(dr, CPartitionScanner.C_MULTILINE_COMMENT);

 		return reconciler;
 	}


 	/**
 	 * @see SourceViewerConfiguration#getContentAssistant(ISourceViewer)
 	 */
 	public IContentAssistant getContentAssistant(ISourceViewer sourceViewer) {
 		if(getEditor() == null) {
 			return null;
 		}

 		ContentAssistant assistant = new ContentAssistant();

 		IContentAssistProcessor processor = new CCompletionProcessor(getEditor());
 		assistant.setContentAssistProcessor(processor, IDocument.DEFAULT_CONTENT_TYPE);

 		//Will this work as a replacement for the configuration lines below?
 		ContentAssistPreference.configure(assistant, getPreferenceStore());

 		assistant.setProposalPopupOrientation(IContentAssistant.PROPOSAL_OVERLAY);
 		assistant.setContextInformationPopupOrientation(ContentAssistant.CONTEXT_INFO_ABOVE);
 		assistant.setInformationControlCreator(getInformationControlCreator(sourceViewer));

 		return assistant;
 	}


 	/**
 	 * @see SourceViewerConfiguration#getReconciler(ISourceViewer)
 	 */
 	public IReconciler getReconciler(ISourceViewer sourceViewer) {
 		if (fEditor != null && fEditor.isEditable()) {
 			Reconciler reconciler= new Reconciler();
 			reconciler.setDelay(1000);
 			reconciler.setIsIncrementalReconciler(false);
 			reconciler.setReconcilingStrategy(new CReconcilingStrategy(fEditor), IDocument.DEFAULT_CONTENT_TYPE);
 			return reconciler;
 		}
 		return null;
 	}


 	/**
 	 * @see SourceViewerConfiguration#getAutoIndentStrategy(ISourceViewer, String)
 	 */
 	public IAutoIndentStrategy getAutoIndentStrategy(ISourceViewer sourceViewer, String contentType) {
 		if(CPartitionScanner.C_MULTILINE_COMMENT.equals(contentType))
 			return new CCommentAutoIndentStrategy();
 		return new CAutoIndentStrategy();
 	}


 	/**
 	 * @see SourceViewerConfiguration#getDoubleClickStrategy(ISourceViewer, String)
 	 */
 	public ITextDoubleClickStrategy getDoubleClickStrategy(ISourceViewer sourceViewer, String contentType) {
 		return new CDoubleClickSelector();
 	}

 	/**
 	 * @see org.eclipse.jface.text.source.SourceViewerConfiguration#getDefaultPrefixes(ISourceViewer, String)
 	 */
 	public String[] getDefaultPrefixes(ISourceViewer sourceViewer, String contentType) {
 		return new String[] { "//", "" };
 	}

 	/**
 	 * @see SourceViewerConfiguration#getDefaultPrefix(ISourceViewer, String)
 	 */
 	public String getDefaultPrefix(ISourceViewer sourceViewer, String contentType) {
 		if(IDocument.DEFAULT_CONTENT_TYPE.equals(contentType))
 			return "//";
 		if(CPartitionScanner.C_SINGLE_LINE_COMMENT.equals(contentType))
 			return "//";
 		if(CPartitionScanner.C_MULTILINE_COMMENT.equals(contentType))
 			return "//";
 		return null;
 	}


 	/*
 	 * @see SourceViewerConfiguration#getIndentPrefixes(ISourceViewer, String)
 	 */
 	public String[] getIndentPrefixes(ISourceViewer sourceViewer, String contentType) {

 		Vector vector= new Vector();

 		// prefix[0] is either '\t' or ' ' x tabWidth, depending on useSpaces
 		int tabWidth= getPreferenceStore().getInt(PREFERENCE_TAB_WIDTH);
 		boolean useSpaces= getPreferenceStore().getBoolean(CEditor.SPACES_FOR_TABS); //$NON-NLS-1$

 		for (int i= 0; i <= tabWidth; i++) {
 		    StringBuffer prefix= new StringBuffer();

 			if (useSpaces) {
 			    for (int j= 0; j + i < tabWidth; j++)
 			    	prefix.append(' ');

 				if (i != 0)
 		    		prefix.append('\t');
 			} else {
 			    for (int j= 0; j < i; j++)
 			    	prefix.append(' ');

 				if (i != tabWidth)
 		    		prefix.append('\t');
 			}

 			vector.add(prefix.toString());
 		}

 		vector.add(""); //$NON-NLS-1$

 		return (String[]) vector.toArray(new String[vector.size()]);
 	}


 	/**
 	 * @see SourceViewerConfiguration#getTabWidth(ISourceViewer)
 	 */
 	public int getTabWidth(ISourceViewer sourceViewer) {
 		return getPreferenceStore().getInt(PREFERENCE_TAB_WIDTH);
 	}


 	/**
 	 * @see SourceViewerConfiguration#getAnnotationHover(ISourceViewer)
 	 */
 	public IAnnotationHover getAnnotationHover(ISourceViewer sourceViewer) {
 		return new CAnnotationHover();
 	}


 	/**
 	 * @see SourceViewerConfiguration#getTextHover(ISourceViewer, String)
 	 */
 	public ITextHover getTextHover(ISourceViewer sourceViewer, String contentType) {
 		HashMap textHovers = new HashMap( 3 );
 		IPluginRegistry pluginRegistry = Platform.getPluginRegistry();
 		IExtensionPoint point = pluginRegistry.getExtensionPoint( CUIPlugin.getDefault().getDescriptor().getUniqueIdentifier(),
 																  ICDTConstants.EP_TEXT_HOVERS );
 		if ( point != null )
 		{
 			IExtension[] extensions = point.getExtensions();
 			for ( int i = 0; i < extensions.length; i++ )
 			{
 				IExtension currentExtension = extensions[i];
 				IConfigurationElement[] configElements = currentExtension.getConfigurationElements();
 				for ( int j = 0; j < configElements.length; j++ )
 				{
 					IConfigurationElement config = configElements[j];
 					if ( config.getName().equals( ICDTConstants.TAG_TEXT_HOVER ) )
 					{
 						processTextHoverElement( textHovers, config );
 					}
 				}
 			}
 		}

 		return new CEditorTextHoverDispatcher( fEditor, textHovers );
 	}

 	private void processTextHoverElement( HashMap textHovers, IConfigurationElement element ) {
 		String perspId = element.getAttribute( ICDTConstants.ATT_PERSPECTIVE );
 		ITextHover textHover = null;
 		try {
 			textHover = (ITextHover)element.createExecutableExtension( ICDTConstants.ATT_CLASS );
 		} catch (CoreException e) {
 		}
 		if ( perspId != null ) {
 			textHovers.put( perspId, textHover );
 		}
 	}

 	/**
 	 * @see SourceViewerConfiguration#getConfiguredContentTypes(ISourceViewer)
 	 */
 	public String[] getConfiguredContentTypes(ISourceViewer sourceViewer) {
 		return new String[] { 	IDocument.DEFAULT_CONTENT_TYPE,
 								CPartitionScanner.C_MULTILINE_COMMENT,
 								CPartitionScanner.C_SINGLE_LINE_COMMENT,
 								CPartitionScanner.C_STRING };
 	}

 	/**
 	 * @see SourceViewerConfiguration#getContentFormatter(ISourceViewer)
 	 */
 	public IContentFormatter getContentFormatter(ISourceViewer sourceViewer) {
 		String[] types= new String[] {
 			DefaultPartitioner.CONTENT_TYPES_CATEGORY
 		};

 		ContentFormatter formatter= new ContentFormatter();
 		IFormattingStrategy strategy= new CFormattingStrategy(sourceViewer);

 		formatter.setFormattingStrategy(strategy, IDocument.DEFAULT_CONTENT_TYPE);
 		formatter.enablePartitionAwareFormatting(false);
 		formatter.setPartitionManagingPositionCategories(types);

 		return formatter;
 	}

 	protected IPreferenceStore getPreferenceStore() {
 		return CUIPlugin.getDefault().getPreferenceStore();
 	}

 	/*
 	 * @see SourceViewerConfiguration#getHoverControlCreator(ISourceViewer)
 	 * @since 2.0
 	 */
 	public IInformationControlCreator getInformationControlCreator(ISourceViewer sourceViewer) {
 		return getInformationControlCreator(sourceViewer, true);
 	}


 	public IInformationControlCreator getInformationControlCreator(ISourceViewer sourceViewer, final boolean cutDown) {
 			return new IInformationControlCreator() {
 			public IInformationControl createInformationControl(Shell parent) {
 				int style = cutDown ? SWT.NONE : (SWT.V_SCROLL | SWT.H_SCROLL);
 				return new DefaultInformationControl(parent, style, new HTMLTextPresenter(cutDown));
 				// return new HoverBrowserControl(parent);
 			}
 		};
 	}

 	public IInformationPresenter getInformationPresenter(ISourceViewer sourceViewer) {
 		return super.getInformationPresenter(sourceViewer);
 	}

 }
	package org.eclipse.cdt.internal.ui.text;
	/*
	* (c) Copyright IBM Corp. 2000, 2001.
	* All Rights Reserved.
	*/

	import java.util.HashMap;
	import java.util.Vector;

	import org.eclipse.cdt.internal.ui.editor.CEditor;
	import org.eclipse.cdt.internal.ui.editor.CEditorTextHoverDispatcher;
	import org.eclipse.cdt.internal.ui.text.contentassist.*;
	import org.eclipse.cdt.ui.CUIPlugin;
	import org.eclipse.cdt.ui.ICDTConstants;
	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.core.runtime.IConfigurationElement;
	import org.eclipse.core.runtime.IExtension;
	import org.eclipse.core.runtime.IExtensionPoint;
	import org.eclipse.core.runtime.IPluginRegistry;
	import org.eclipse.core.runtime.Platform;
	import org.eclipse.jface.preference.IPreferenceStore;
	import org.eclipse.jface.text.DefaultInformationControl;
	import org.eclipse.jface.text.IAutoIndentStrategy;
	import org.eclipse.jface.text.IDocument;
	import org.eclipse.jface.text.IInformationControl;
	import org.eclipse.jface.text.IInformationControlCreator;
	import org.eclipse.jface.text.ITextDoubleClickStrategy;
	import org.eclipse.jface.text.ITextHover;
	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.formatter.ContentFormatter;
	import org.eclipse.jface.text.formatter.IContentFormatter;
	import org.eclipse.jface.text.formatter.IFormattingStrategy;
	import org.eclipse.jface.text.information.IInformationPresenter;
	import org.eclipse.jface.text.presentation.IPresentationReconciler;
	import org.eclipse.jface.text.presentation.PresentationReconciler;
	import org.eclipse.jface.text.reconciler.IReconciler;
	import org.eclipse.jface.text.reconciler.Reconciler;
	import org.eclipse.jface.text.rules.DefaultDamagerRepairer;
	import org.eclipse.jface.text.rules.DefaultPartitioner;
	import org.eclipse.jface.text.rules.RuleBasedScanner;
	import org.eclipse.jface.text.source.IAnnotationHover;
	import org.eclipse.jface.text.source.ISourceViewer;
	import org.eclipse.jface.text.source.SourceViewerConfiguration;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.widgets.Shell;
	import org.eclipse.ui.texteditor.ITextEditor;



	/**
	* Configuration for an <code>SourceViewer</code> which shows C code.
	*/
	public class CSourceViewerConfiguration extends SourceViewerConfiguration {

	/** Key used to look up display tab width */
	public final static String PREFERENCE_TAB_WIDTH= "org.eclipse.cdt.editor.tab.width"; //$NON-NLS-1$
	/** Key used to look up code formatter tab size */
	private final static String CODE_FORMATTER_TAB_SIZE= "org.eclipse.cdt.formatter.tabulation.size"; //$NON-NLS-1$
	/** Key used to look up code formatter tab character */
	private final static String CODE_FORMATTER_TAB_CHAR= "org.eclipse.cdt.formatter.tabulation.char"; //$NON-NLS-1$

	private CTextTools fTextTools;
	private CEditor fEditor;

	/**
	* Creates a new C source viewer configuration for viewers in the given editor using
	* the given C tools collection.
	*
	* @param tools the C text tools collection to be used
	* @param editor the editor in which the configured viewer will reside
	*/
	public CSourceViewerConfiguration(CTextTools tools, CEditor editor) {
	fTextTools= tools;
	fEditor= editor;
	}

	/**
	* Returns the C multiline comment scanner for this configuration.
	*
	* @return the C multiline comment scanner
	*/
	protected RuleBasedScanner getMultilineCommentScanner() {
	return fTextTools.getMultilineCommentScanner();
	}

	/**
	* Returns the C singleline comment scanner for this configuration.
	*
	* @return the C singleline comment scanner
	*/
	protected RuleBasedScanner getSinglelineCommentScanner() {
	return fTextTools.getSinglelineCommentScanner();
	}

	/**
	* Returns the C string scanner for this configuration.
	*
	* @return the C string scanner
	*/
	protected RuleBasedScanner getStringScanner() {
	return fTextTools.getStringScanner();
	}

	/**
	* Returns the color manager for this configuration.
	*
	* @return the color manager
	*/
	protected IColorManager getColorManager() {
	return fTextTools.getColorManager();
	}

	/**
	* Returns the editor in which the configured viewer(s) will reside.
	*
	* @return the enclosing editor
	*/
	protected ITextEditor getEditor() {
	return fEditor;
	}

	/**
	* @see ISourceViewerConfiguration#getPresentationReconciler(ISourceViewer)
	*/
	public IPresentationReconciler getPresentationReconciler(ISourceViewer sourceViewer) {

	PresentationReconciler reconciler= new PresentationReconciler();

	RuleBasedScanner scanner;

	if(sourceViewer instanceof CEditor.AdaptedSourceViewer) {
	String language = ((CEditor.AdaptedSourceViewer)sourceViewer).getDisplayLanguage();
	if(language != null && language.equals(CEditor.LANGUAGE_CPP)) {
	scanner= fTextTools.getCppCodeScanner();
	} else {
	scanner= fTextTools.getCCodeScanner();
	}
	} else {
	scanner= fTextTools.getCCodeScanner();
	}

	DefaultDamagerRepairer dr= new DefaultDamagerRepairer(scanner);

	reconciler.setDamager(dr, IDocument.DEFAULT_CONTENT_TYPE);
	reconciler.setRepairer(dr, IDocument.DEFAULT_CONTENT_TYPE);

	//TextAttribute attr = new TextAttribute(manager.getColor(ICColorConstants.C_DEFAULT));

	dr= new DefaultDamagerRepairer(getSinglelineCommentScanner());
	reconciler.setDamager(dr, CPartitionScanner.C_SINGLE_LINE_COMMENT);
	reconciler.setRepairer(dr, CPartitionScanner.C_SINGLE_LINE_COMMENT);

	dr= new DefaultDamagerRepairer(getStringScanner());
	reconciler.setDamager(dr, CPartitionScanner.C_STRING);
	reconciler.setRepairer(dr, CPartitionScanner.C_STRING);

	dr= new DefaultDamagerRepairer(getMultilineCommentScanner());
	reconciler.setDamager(dr, CPartitionScanner.C_MULTILINE_COMMENT);
	reconciler.setRepairer(dr, CPartitionScanner.C_MULTILINE_COMMENT);

	return reconciler;
	}


	/**
	* @see SourceViewerConfiguration#getContentAssistant(ISourceViewer)
	*/
	public IContentAssistant getContentAssistant(ISourceViewer sourceViewer) {
	if(getEditor() == null) {
	return null;
	}

	ContentAssistant assistant = new ContentAssistant();

	IContentAssistProcessor processor = new CCompletionProcessor(getEditor());
	assistant.setContentAssistProcessor(processor, IDocument.DEFAULT_CONTENT_TYPE);

	//Will this work as a replacement for the configuration lines below?
	ContentAssistPreference.configure(assistant, getPreferenceStore());

	assistant.setProposalPopupOrientation(IContentAssistant.PROPOSAL_OVERLAY);
	assistant.setContextInformationPopupOrientation(ContentAssistant.CONTEXT_INFO_ABOVE);
	assistant.setInformationControlCreator(getInformationControlCreator(sourceViewer));

	return assistant;
	}


	/**
	* @see SourceViewerConfiguration#getReconciler(ISourceViewer)
	*/
	public IReconciler getReconciler(ISourceViewer sourceViewer) {
	if (fEditor != null && fEditor.isEditable()) {
	Reconciler reconciler= new Reconciler();
	reconciler.setDelay(1000);
	reconciler.setIsIncrementalReconciler(false);
	reconciler.setReconcilingStrategy(new CReconcilingStrategy(fEditor), IDocument.DEFAULT_CONTENT_TYPE);
	return reconciler;
	}
	return null;
	}


	/**
	* @see SourceViewerConfiguration#getAutoIndentStrategy(ISourceViewer, String)
	*/
	public IAutoIndentStrategy getAutoIndentStrategy(ISourceViewer sourceViewer, String contentType) {
	if(CPartitionScanner.C_MULTILINE_COMMENT.equals(contentType))
	return new CCommentAutoIndentStrategy();
	return new CAutoIndentStrategy();
	}


	/**
	* @see SourceViewerConfiguration#getDoubleClickStrategy(ISourceViewer, String)
	*/
	public ITextDoubleClickStrategy getDoubleClickStrategy(ISourceViewer sourceViewer, String contentType) {
	return new CDoubleClickSelector();
	}

	/**
	* @see org.eclipse.jface.text.source.SourceViewerConfiguration#getDefaultPrefixes(ISourceViewer, String)
	*/
	public String[] getDefaultPrefixes(ISourceViewer sourceViewer, String contentType) {
	return new String[] { "//", "" };
	}

	/**
	* @see SourceViewerConfiguration#getDefaultPrefix(ISourceViewer, String)
	*/
	public String getDefaultPrefix(ISourceViewer sourceViewer, String contentType) {
	if(IDocument.DEFAULT_CONTENT_TYPE.equals(contentType))
	return "//";
	if(CPartitionScanner.C_SINGLE_LINE_COMMENT.equals(contentType))
	return "//";
	if(CPartitionScanner.C_MULTILINE_COMMENT.equals(contentType))
	return "//";
	return null;
	}


	/*
	* @see SourceViewerConfiguration#getIndentPrefixes(ISourceViewer, String)
	*/
	public String[] getIndentPrefixes(ISourceViewer sourceViewer, String contentType) {

	Vector vector= new Vector();

	// prefix[0] is either '\t' or ' ' x tabWidth, depending on useSpaces
	int tabWidth= getPreferenceStore().getInt(PREFERENCE_TAB_WIDTH);
	boolean useSpaces= getPreferenceStore().getBoolean(CEditor.SPACES_FOR_TABS); //$NON-NLS-1$

	for (int i= 0; i <= tabWidth; i++) {
	StringBuffer prefix= new StringBuffer();

	if (useSpaces) {
	for (int j= 0; j + i < tabWidth; j++)
	prefix.append(' ');

	if (i != 0)
	prefix.append('\t');
	} else {
	for (int j= 0; j < i; j++)
	prefix.append(' ');

	if (i != tabWidth)
	prefix.append('\t');
	}

	vector.add(prefix.toString());
	}

	vector.add(""); //$NON-NLS-1$

	return (String[]) vector.toArray(new String[vector.size()]);
	}


	/**
	* @see SourceViewerConfiguration#getTabWidth(ISourceViewer)
	*/
	public int getTabWidth(ISourceViewer sourceViewer) {
	return getPreferenceStore().getInt(PREFERENCE_TAB_WIDTH);
	}


	/**
	* @see SourceViewerConfiguration#getAnnotationHover(ISourceViewer)
	*/
	public IAnnotationHover getAnnotationHover(ISourceViewer sourceViewer) {
	return new CAnnotationHover();
	}


	/**
	* @see SourceViewerConfiguration#getTextHover(ISourceViewer, String)
	*/
	public ITextHover getTextHover(ISourceViewer sourceViewer, String contentType) {
	HashMap textHovers = new HashMap( 3 );
	IPluginRegistry pluginRegistry = Platform.getPluginRegistry();
	IExtensionPoint point = pluginRegistry.getExtensionPoint( CUIPlugin.getDefault().getDescriptor().getUniqueIdentifier(),
	ICDTConstants.EP_TEXT_HOVERS );
	if ( point != null )
	{
	IExtension[] extensions = point.getExtensions();
	for ( int i = 0; i < extensions.length; i++ )
	{
	IExtension currentExtension = extensions[i];
	IConfigurationElement[] configElements = currentExtension.getConfigurationElements();
	for ( int j = 0; j < configElements.length; j++ )
	{
	IConfigurationElement config = configElements[j];
	if ( config.getName().equals( ICDTConstants.TAG_TEXT_HOVER ) )
	{
	processTextHoverElement( textHovers, config );
	}
	}
	}
	}

	return new CEditorTextHoverDispatcher( fEditor, textHovers );
	}

	private void processTextHoverElement( HashMap textHovers, IConfigurationElement element ) {
	String perspId = element.getAttribute( ICDTConstants.ATT_PERSPECTIVE );
	ITextHover textHover = null;
	try {
	textHover = (ITextHover)element.createExecutableExtension( ICDTConstants.ATT_CLASS );
	} catch (CoreException e) {
	}
	if ( perspId != null ) {
	textHovers.put( perspId, textHover );
	}
	}

	/**
	* @see SourceViewerConfiguration#getConfiguredContentTypes(ISourceViewer)
	*/
	public String[] getConfiguredContentTypes(ISourceViewer sourceViewer) {
	return new String[] { IDocument.DEFAULT_CONTENT_TYPE,
	CPartitionScanner.C_MULTILINE_COMMENT,
	CPartitionScanner.C_SINGLE_LINE_COMMENT,
	CPartitionScanner.C_STRING };
	}

	/**
	* @see SourceViewerConfiguration#getContentFormatter(ISourceViewer)
	*/
	public IContentFormatter getContentFormatter(ISourceViewer sourceViewer) {
	String[] types= new String[] {
	DefaultPartitioner.CONTENT_TYPES_CATEGORY
	};

	ContentFormatter formatter= new ContentFormatter();
	IFormattingStrategy strategy= new CFormattingStrategy(sourceViewer);

	formatter.setFormattingStrategy(strategy, IDocument.DEFAULT_CONTENT_TYPE);
	formatter.enablePartitionAwareFormatting(false);
	formatter.setPartitionManagingPositionCategories(types);

	return formatter;
	}

	protected IPreferenceStore getPreferenceStore() {
	return CUIPlugin.getDefault().getPreferenceStore();
	}

	/*
	* @see SourceViewerConfiguration#getHoverControlCreator(ISourceViewer)
	* @since 2.0
	*/
	public IInformationControlCreator getInformationControlCreator(ISourceViewer sourceViewer) {
	return getInformationControlCreator(sourceViewer, true);
	}


	public IInformationControlCreator getInformationControlCreator(ISourceViewer sourceViewer, final boolean cutDown) {
	return new IInformationControlCreator() {
	public IInformationControl createInformationControl(Shell parent) {
	int style = cutDown ? SWT.NONE : (SWT.V_SCROLL \| SWT.H_SCROLL);
	return new DefaultInformationControl(parent, style, new HTMLTextPresenter(cutDown));
	// return new HoverBrowserControl(parent);
	}
	};
	}

	public IInformationPresenter getInformationPresenter(ISourceViewer sourceViewer) {
	return super.getInformationPresenter(sourceViewer);
	}

	}