PHP highlighting colors could now be managed by the new PreferencePage
[phpeclipse.git] / net.sourceforge.phpeclipse / src / net / sourceforge / phpeclipse / phpeditor / PHPEditor.java
index 86ca2c9..fc5da20 100644 (file)
@@ -11,13 +11,22 @@ Contributors:
     IBM Corporation - Initial implementation
     Klaus Hartlage - www.eclipseproject.de
 **********************************************************************/
+import java.util.ArrayList;
+import java.util.List;
+
 import net.sourceforge.phpdt.internal.ui.actions.CompositeActionGroup;
+import net.sourceforge.phpdt.internal.ui.text.HTMLTextPresenter;
+import net.sourceforge.phpdt.internal.ui.text.PHPPairMatcher;
+import net.sourceforge.phpdt.internal.ui.viewsupport.IViewPartInputProvider;
+import net.sourceforge.phpdt.ui.PreferenceConstants;
 import net.sourceforge.phpdt.ui.actions.GenerateActionGroup;
-import net.sourceforge.phpeclipse.IPreferenceConstants;
+import net.sourceforge.phpdt.ui.actions.GotoMatchingBracketAction;
+import net.sourceforge.phpdt.ui.text.IColorManager;
+import net.sourceforge.phpdt.ui.text.JavaTextTools;
 import net.sourceforge.phpeclipse.PHPeclipsePlugin;
-import net.sourceforge.phpeclipse.phpeditor.php.PHPCodeScanner;
-import net.sourceforge.phpeclipse.phpeditor.util.PHPColorProvider;
+import net.sourceforge.phpeclipse.phpeditor.php.IPHPPartitionScannerConstants;
 
+import org.eclipse.core.resources.IResource;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IProgressMonitor;
 import org.eclipse.jface.action.Action;
@@ -25,489 +34,874 @@ import org.eclipse.jface.action.IAction;
 import org.eclipse.jface.action.MenuManager;
 import org.eclipse.jface.preference.IPreferenceStore;
 import org.eclipse.jface.preference.PreferenceConverter;
+import org.eclipse.jface.text.BadLocationException;
+import org.eclipse.jface.text.DefaultInformationControl;
 import org.eclipse.jface.text.IDocument;
+import org.eclipse.jface.text.IInformationControl;
+import org.eclipse.jface.text.IInformationControlCreator;
+import org.eclipse.jface.text.IRegion;
+import org.eclipse.jface.text.ITextHover;
 import org.eclipse.jface.text.ITextOperationTarget;
+import org.eclipse.jface.text.ITextViewer;
+import org.eclipse.jface.text.ITextViewerExtension2;
+import org.eclipse.jface.text.ITextViewerExtension3;
+import org.eclipse.jface.text.ITypedRegion;
+import org.eclipse.jface.text.Region;
+import org.eclipse.jface.text.information.InformationPresenter;
 import org.eclipse.jface.text.source.AnnotationRulerColumn;
 import org.eclipse.jface.text.source.CompositeRuler;
 import org.eclipse.jface.text.source.ISourceViewer;
 import org.eclipse.jface.text.source.IVerticalRuler;
 import org.eclipse.jface.text.source.IVerticalRulerColumn;
 import org.eclipse.jface.text.source.LineNumberRulerColumn;
-import org.eclipse.jface.util.IPropertyChangeListener;
+import org.eclipse.jface.text.source.SourceViewerConfiguration;
 import org.eclipse.jface.util.PropertyChangeEvent;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.custom.BidiSegmentEvent;
+import org.eclipse.swt.custom.BidiSegmentListener;
+import org.eclipse.swt.custom.StyledText;
+import org.eclipse.swt.graphics.Point;
 import org.eclipse.swt.graphics.RGB;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Shell;
 import org.eclipse.ui.IEditorInput;
 import org.eclipse.ui.actions.ActionContext;
 import org.eclipse.ui.actions.ActionGroup;
-import org.eclipse.ui.editors.text.TextEditor;
 import org.eclipse.ui.texteditor.ContentAssistAction;
 import org.eclipse.ui.texteditor.DefaultRangeIndicator;
+import org.eclipse.ui.texteditor.IDocumentProvider;
+import org.eclipse.ui.texteditor.IEditorStatusLine;
 import org.eclipse.ui.texteditor.ITextEditorActionConstants;
+import org.eclipse.ui.texteditor.StatusTextEditor;
 import org.eclipse.ui.texteditor.TextOperationAction;
 import org.eclipse.ui.views.contentoutline.IContentOutlinePage;
 /**
  * PHP specific text editor.
  */
-public class PHPEditor extends TextEditor {
-
-       // protected PHPActionGroup fActionGroups;
-       /** The outline page */
-       private PHPContentOutlinePage fOutlinePage;
-       private IPreferenceStore phpPrefStore;
-
-       /** The line number ruler column */
-       private LineNumberRulerColumn fLineNumberRulerColumn;
-
-       protected CompositeActionGroup fActionGroups;
-       /** The standard action groups added to the menu */
-       private GenerateActionGroup fGenerateActionGroup;
-       private CompositeActionGroup fContextMenuGroup;
-       /**
-        * Default constructor.
-        */
-       public PHPEditor() {
-               super();
-               setRulerContextMenuId("#PHPRulerContext"); //$NON-NLS-1$
-       }
-//
-//     /**
-//      * @see IMember#getCompilationUnit()
-//      */
-//     public ICompilationUnit getCompilationUnit() {
-//             return this; 
-//     }
-//     /**
-//      * @see org.phpeclipse.phpdt.internal.compiler.env.ICompilationUnit#getContents()
-//      */
-//     public char[] getContents() {
-//             IDocument doc = this.getDocumentProvider().getDocument(this.getEditorInput());
-//     
-//             return doc.get().toCharArray();
-//     }
-
-       /**
-        * Returns this document's complete text.
-        *
-        * @return the document's complete text
-        */
-       public String get() {
-               IDocument doc = this.getDocumentProvider().getDocument(this.getEditorInput());
-               return doc.get();       
-       }
-       
-       /**
-        *  Returns the standard action group of this editor.
-        */
-       protected ActionGroup getActionGroup() {
-               return fActionGroups;
-       }
-
-       public PHPContentOutlinePage getfOutlinePage() {
-               return fOutlinePage;
-       }
-
-       /** The <code>PHPEditor</code> implementation of this 
-        * <code>AbstractTextEditor</code> method extend the 
-        * actions to add those specific to the receiver
-        */
-       protected void createActions() {
-               super.createActions();
-
-               Action action;
-               //    setAction(
-               //      "ContentAssistProposal",
-               //      new TextOperationAction(
-               //        PHPEditorMessages.getResourceBundle(),
-               //        "ContentAssistProposal.",
-               //        this,
-               //        ISourceViewer.CONTENTASSIST_PROPOSALS));
-               action = new ContentAssistAction(PHPEditorMessages.getResourceBundle(), "ContentAssistProposal.", this); //$NON-NLS-1$
-               action.setActionDefinitionId(
-                       PHPEditorActionDefinitionIds.CONTENT_ASSIST_PROPOSALS);
-               setAction("ContentAssistProposal", action); //$NON-NLS-1$
-
-               //      System.out.println(action.getId());
-               //      System.out.println(action.getActionDefinitionId());
-
-               setAction(
-                       "ContentAssistTip",
-                       new TextOperationAction(
-                               PHPEditorMessages.getResourceBundle(),
-                               "ContentAssistTip.",
-                               this,
-                               ISourceViewer.CONTENTASSIST_CONTEXT_INFORMATION));
-
-               action =
-                       new TextOperationAction(
-                               PHPEditorMessages.getResourceBundle(),
-                               "Comment.",
-                               this,
-                               ITextOperationTarget.PREFIX);
-               action.setActionDefinitionId(PHPEditorActionDefinitionIds.COMMENT);
-               setAction("Comment", action);
-
-               //      System.out.println(action.getId());
-               //      System.out.println(action.getActionDefinitionId());
-
-               action =
-                       new TextOperationAction(
-                               PHPEditorMessages.getResourceBundle(),
-                               "Uncomment.",
-                               this,
-                               ITextOperationTarget.STRIP_PREFIX);
-               action.setActionDefinitionId(PHPEditorActionDefinitionIds.UNCOMMENT);
-               setAction("Uncomment", action);
-
-               //      System.out.println(action.getId());
-               //      System.out.println(action.getActionDefinitionId());
-
-               //  fActionGroups = new PHPActionGroup(this, ITextEditorActionConstants.GROUP_EDIT);
-
-               markAsStateDependentAction("Comment", true); //$NON-NLS-1$
-               markAsStateDependentAction("Uncomment", true); //$NON-NLS-1$
-
-               fGenerateActionGroup =
-                       new GenerateActionGroup(
-                               this,
-                               ITextEditorActionConstants.GROUP_EDIT);
-
-               fActionGroups =
-                       new CompositeActionGroup(
-                               new ActionGroup[] { fGenerateActionGroup });
-
-               // We have to keep the context menu group separate to have better control over positioning
-               fContextMenuGroup =
-                       new CompositeActionGroup(
-                               new ActionGroup[] { fGenerateActionGroup });
-               //      rg, 
-               //      new LocalHistoryActionGroup(this, ITextEditorActionConstants.GROUP_EDIT)});
-       }
-
-       /** The <code>PHPEditor</code> implementation of this 
-        * <code>AbstractTextEditor</code> method performs any extra 
-        * disposal actions required by the php editor.
-        */
-       public void dispose() {
-               PHPEditorEnvironment.disconnect(this);
-               if (fOutlinePage != null)
-                       fOutlinePage.setInput(null);
-
-               if (fActionGroups != null)
-                       fActionGroups.dispose();
-
-               super.dispose();
-       }
-
-       /** The <code>PHPEditor</code> implementation of this 
-        * <code>AbstractTextEditor</code> method performs any extra 
-        * revert behavior required by the php editor.
-        */
-       public void doRevertToSaved() {
-               super.doRevertToSaved();
-               if (fOutlinePage != null)
-                       fOutlinePage.update();
-       }
-
-       /** The <code>PHPEditor</code> implementation of this 
-        * <code>AbstractTextEditor</code> method performs any extra 
-        * save behavior required by the php editor.
-        */
-       public void doSave(IProgressMonitor monitor) {
-               super.doSave(monitor);
-               // compile or not, according to the user preferences
-               IPreferenceStore store = phpPrefStore;
-               if (store.getBoolean(PHPeclipsePlugin.PHP_PARSE_ON_SAVE)) {
-                       IAction a = PHPParserAction.getInstance();
-                       if (a != null)
-                               a.run();
-               }
-               if (fOutlinePage != null)
-                       fOutlinePage.update();
-       }
-
-       /** The <code>PHPEditor</code> implementation of this 
-        * <code>AbstractTextEditor</code> method performs any extra 
-        * save as behavior required by the php editor.
-        */
-       public void doSaveAs() {
-               super.doSaveAs();
-               if (fOutlinePage != null)
-                       fOutlinePage.update();
-       }
-
-       /** The <code>PHPEditor</code> implementation of this 
-        * <code>AbstractTextEditor</code> method performs sets the 
-        * input of the outline page after AbstractTextEditor has set input.
-        */
-       public void doSetInput(IEditorInput input) throws CoreException {
-               super.doSetInput(input);
-               if (fOutlinePage != null)
-                       fOutlinePage.setInput(input);
-       }
-
-       /** The <code>PHPEditor</code> implementation of this 
-        * <code>AbstractTextEditor</code> method adds any 
-        * PHPEditor specific entries.
-        */
-       public void editorContextMenuAboutToShow(MenuManager menu) {
-               super.editorContextMenuAboutToShow(menu);
-               //  addAction(menu, "ContentAssistProposal"); //$NON-NLS-1$
-               //  addAction(menu, "ContentAssistTip"); //$NON-NLS-1$
-
-               // fActionGroups.fillContextMenu(menu);
-
-               ActionContext context =
-                       new ActionContext(getSelectionProvider().getSelection());
-               fContextMenuGroup.setContext(context);
-               fContextMenuGroup.fillContextMenu(menu);
-               fContextMenuGroup.setContext(null);
-       }
-
-       protected void updateStateDependentActions() {
-               super.updateStateDependentActions();
-               fGenerateActionGroup.editorStateChanged();
-       }
-
-       /** The <code>PHPEditor</code> implementation of this 
-        * <code>AbstractTextEditor</code> method performs gets
-        * the java content outline page if request is for a an 
-        * outline page.
-        */
-       public Object getAdapter(Class required) {
-               if (IContentOutlinePage.class.equals(required)) {
-                       if (fOutlinePage == null) {
-                               fOutlinePage =
-                                       new PHPContentOutlinePage(getDocumentProvider(), this);
-                               if (getEditorInput() != null)
-                                       fOutlinePage.setInput(getEditorInput());
-                       }
-                       return fOutlinePage;
-               }
-               return super.getAdapter(required);
-       }
-
-       //  public void openContextHelp() {
-       //    IDocument doc = this.getDocumentProvider().getDocument(this.getEditorInput());
-       //    ITextSelection selection = (ITextSelection) this.getSelectionProvider().getSelection();
-       //    int pos = selection.getOffset();
-       //    String word = getFunctionName(doc, pos);
-       //    openContextHelp(word);
-       //  }
-       //
-       //  private void openContextHelp(String word) {
-       //    open(word);
-       //  }
-       //
-       //  public static void open(String word) {
-       //    IHelp help = WorkbenchHelp.getHelpSupport();
-       //    if (help != null) {
-       //      IHelpResource helpResource = new PHPFunctionHelpResource(word);
-       //      WorkbenchHelp.getHelpSupport().displayHelpResource(helpResource);
-       //    } else {
-       //      //   showMessage(shell, dialogTitle, ActionMessages.getString("Open help not available"), false); //$NON-NLS-1$
-       //    }
-       //  }
-
-//     private String getFunctionName(IDocument doc, int pos) {
-//             Point word = PHPWordExtractor.findWord(doc, pos);
-//             if (word != null) {
-//                     try {
-//                             return doc.get(word.x, word.y).replace('_', '-');
-//                     } catch (BadLocationException e) {
-//                     }
-//             }
-//             return "";
-//     }
-
-       /*
-          * @see AbstractTextEditor#handlePreferenceStoreChanged(PropertyChangeEvent)
-          */
-       protected void handlePreferenceStoreChanged(PropertyChangeEvent event) {
-
-               try {
-
-                       ISourceViewer sourceViewer = getSourceViewer();
-                       if (sourceViewer == null)
-                               return;
-
-                       String property = event.getProperty();
-
-                       //      if (JavaSourceViewerConfiguration.PREFERENCE_TAB_WIDTH.equals(property)) {
-                       //        Object value= event.getNewValue();
-                       //        if (value instanceof Integer) {
-                       //          sourceViewer.getTextWidget().setTabs(((Integer) value).intValue());
-                       //        } else if (value instanceof String) {
-                       //          sourceViewer.getTextWidget().setTabs(Integer.parseInt((String) value));
-                       //        }
-                       //        return;
-                       //      }
-
-                       if (IPreferenceConstants.LINE_NUMBER_RULER.equals(property)) {
-                               if (isLineNumberRulerVisible())
-                                       showLineNumberRuler();
-                               else
-                                       hideLineNumberRuler();
-                               return;
-                       }
-
-                       if (fLineNumberRulerColumn != null
-                               && (IPreferenceConstants.LINE_NUMBER_COLOR.equals(property)
-                                       || PREFERENCE_COLOR_BACKGROUND_SYSTEM_DEFAULT.equals(property)
-                                       || PREFERENCE_COLOR_BACKGROUND.equals(property))) {
-
-                               initializeLineNumberRulerColumn(fLineNumberRulerColumn);
-                       }
-
-               } finally {
-                       super.handlePreferenceStoreChanged(event);
-               }
-       }
-       /**
-        * Shows the line number ruler column.
-        */
-       private void showLineNumberRuler() {
-               IVerticalRuler v = getVerticalRuler();
-               if (v instanceof CompositeRuler) {
-                       CompositeRuler c = (CompositeRuler) v;
-                       c.addDecorator(1, createLineNumberRulerColumn());
-               }
-       }
-
-       /**
-       * Return whether the line number ruler column should be 
-       * visible according to the preference store settings.
-       * @return <code>true</code> if the line numbers should be visible
-       */
-       private boolean isLineNumberRulerVisible() {
-               // IPreferenceStore store= getPreferenceStore();
-               return phpPrefStore.getBoolean(IPreferenceConstants.LINE_NUMBER_RULER);
-       }
-       /**
-        * Hides the line number ruler column.
-        */
-       private void hideLineNumberRuler() {
-               IVerticalRuler v = getVerticalRuler();
-               if (v instanceof CompositeRuler) {
-                       CompositeRuler c = (CompositeRuler) v;
-                       try {
-                               c.removeDecorator(1);
-                       } catch (Throwable e) {
-                       }
-               }
-       }
-
-       /**
-       * Initializes the given line number ruler column from the preference store.
-       * @param rulerColumn the ruler column to be initialized
-       */
-       protected void initializeLineNumberRulerColumn(LineNumberRulerColumn rulerColumn) {
-               //   JavaTextTools textTools= JavaPlugin.getDefault().getJavaTextTools();
-               PHPColorProvider manager = PHPEditorEnvironment.getPHPColorProvider();
-
-               if (phpPrefStore != null) {
-
-                       RGB rgb = null;
-                       // foreground color
-                       if (phpPrefStore
-                               .contains(IPreferenceConstants.LINE_NUMBER_COLOR)) {
-                               if (phpPrefStore
-                                       .isDefault(IPreferenceConstants.LINE_NUMBER_COLOR))
-                                       rgb =
-                                               PreferenceConverter.getDefaultColor(
-                                                       phpPrefStore,
-                                                       IPreferenceConstants.LINE_NUMBER_COLOR);
-                               else
-                                       rgb =
-                                               PreferenceConverter.getColor(
-                                                       phpPrefStore,
-                                                       IPreferenceConstants.LINE_NUMBER_COLOR);
-                       }
-                       rulerColumn.setForeground(manager.getColor(rgb));
-
-                       rgb = null;
-                       // background color
-                       if (!phpPrefStore
-                               .getBoolean(
-                                       IPreferenceConstants
-                                               .PREFERENCE_COLOR_BACKGROUND_SYSTEM_DEFAULT)) {
-                               if (phpPrefStore
-                                       .contains(
-                                               IPreferenceConstants.PREFERENCE_COLOR_BACKGROUND)) {
-                                       if (phpPrefStore
-                                               .isDefault(
-                                                       IPreferenceConstants.PREFERENCE_COLOR_BACKGROUND))
-                                               rgb =
-                                                       PreferenceConverter.getDefaultColor(
-                                                               phpPrefStore,
-                                                               IPreferenceConstants
-                                                                       .PREFERENCE_COLOR_BACKGROUND);
-                                       else
-                                               rgb =
-                                                       PreferenceConverter.getColor(
-                                                               phpPrefStore,
-                                                               IPreferenceConstants
-                                                                       .PREFERENCE_COLOR_BACKGROUND);
-                               }
-                               rulerColumn.setBackground(manager.getColor(rgb));
-                       }
-
-               }
-       }
-
-       /**
-        * Creates a new line number ruler column that is appropriately initialized.
-        */
-       protected IVerticalRulerColumn createLineNumberRulerColumn() {
-               fLineNumberRulerColumn = new LineNumberRulerColumn();
-               initializeLineNumberRulerColumn(fLineNumberRulerColumn);
-               return fLineNumberRulerColumn;
-       }
-
-       /*
-        * @see AbstractTextEditor#createVerticalRuler()
-        */
-       protected IVerticalRuler createVerticalRuler() {
-               CompositeRuler ruler = new CompositeRuler();
-               ruler.addDecorator(0, new AnnotationRulerColumn(VERTICAL_RULER_WIDTH));
-               if (isLineNumberRulerVisible())
-                       ruler.addDecorator(1, createLineNumberRulerColumn());
-               return ruler;
-       }
-
-       /* (non-Javadoc)
-        * Method declared on AbstractTextEditor
-        */
-       protected void initializeEditor() {
-               PHPEditorEnvironment.connect(this);
-
-               setSourceViewerConfiguration(new PHPSourceViewerConfiguration());
-               setRangeIndicator(new DefaultRangeIndicator());
-               setEditorContextMenuId("#PHPEditorContext"); //$NON-NLS-1$
-               setRulerContextMenuId("#PHPRulerContext"); //$NON-NLS-1$
-               // setDocumentProvider(PHPeclipsePlugin.getCompilationUnitDocumentProvider());
-               phpPrefStore = PHPeclipsePlugin.getDefault().getPreferenceStore();
-
-               phpPrefStore.addPropertyChangeListener(new IPropertyChangeListener() {
-                       public void propertyChange(PropertyChangeEvent event) {
-                               PHPCodeScanner scanner =
-                                       PHPEditorEnvironment.getPHPCodeScanner();
-                               if (scanner != null) {
-                                       scanner.updateToken(
-                                               PHPEditorEnvironment.getPHPColorProvider());
-                               }
-                               if (getSourceViewer() != null) {
-                                       getSourceViewer().invalidateTextPresentation();
-                               }
-
-                               String property = event.getProperty();
-                               if (IPreferenceConstants.LINE_NUMBER_RULER.equals(property)) {
-                                       if (isLineNumberRulerVisible())
-                                               showLineNumberRuler();
-                                       else
-                                               hideLineNumberRuler();
-                                       return;
-                               }
-                       }
-               });
-       }
+public class PHPEditor
+  extends StatusTextEditor
+  implements IViewPartInputProvider { // extends TextEditor {
+
+  /** Preference key for showing the line number ruler */
+  private final static String LINE_NUMBER_RULER =
+    PreferenceConstants.EDITOR_LINE_NUMBER_RULER;
+  /** Preference key for the foreground color of the line numbers */
+  private final static String LINE_NUMBER_COLOR =
+    PreferenceConstants.EDITOR_LINE_NUMBER_RULER_COLOR;
+  /** Preference key for the link color */
+  private final static String LINK_COLOR =
+    PreferenceConstants.EDITOR_LINK_COLOR;
+
+  // protected PHPActionGroup fActionGroups;
+  /** The outline page */
+  private PHPContentOutlinePage fOutlinePage;
+
+  //  protected PHPSyntaxParserThread fValidationThread = null;
+
+  // private IPreferenceStore fPHPPrefStore;
+
+  /** The editor's bracket matcher */
+  private PHPPairMatcher fBracketMatcher;
+  /** The line number ruler column */
+  private LineNumberRulerColumn fLineNumberRulerColumn;
+
+  protected CompositeActionGroup fActionGroups;
+  /** The standard action groups added to the menu */
+  private GenerateActionGroup fGenerateActionGroup;
+  private CompositeActionGroup fContextMenuGroup;
+
+  /** The information presenter. */
+  private InformationPresenter fInformationPresenter;
+
+  /**
+   * Default constructor.
+   */
+  public PHPEditor() {
+    super();
+    JavaTextTools textTools = PHPeclipsePlugin.getDefault().getJavaTextTools();
+    setSourceViewerConfiguration(
+      new PHPSourceViewerConfiguration(textTools, this));
+    setRangeIndicator(new DefaultRangeIndicator());
+    setPreferenceStore(PHPeclipsePlugin.getDefault().getPreferenceStore());
+
+    //    if (PreferenceConstants.getPreferenceStore().getBoolean(PreferenceConstants.EDITOR_SYNC_OUTLINE_ON_CURSOR_MOVE))
+    //      fUpdater= new OutlinePageSelectionUpdater();
+
+    initializeEditor();
+  }
+  //
+  //   /**
+  //    * @see IMember#getCompilationUnit()
+  //    */
+  //   public ICompilationUnit getCompilationUnit() {
+  //           return this; 
+  //   }
+  //   /**
+  //    * @see org.phpeclipse.phpdt.internal.compiler.env.ICompilationUnit#getContents()
+  //    */
+  //   public char[] getContents() {
+  //           IDocument doc = this.getDocumentProvider().getDocument(this.getEditorInput());
+  //   
+  //           return doc.get().toCharArray();
+  //   }
+
+  /*
+   * Update the hovering behavior depending on the preferences.
+   */
+  private void updateHoverBehavior() {
+    SourceViewerConfiguration configuration= getSourceViewerConfiguration();
+    String[] types= configuration.getConfiguredContentTypes(getSourceViewer());
+
+    for (int i= 0; i < types.length; i++) {
+                       
+      String t= types[i];
+                               
+      int[] stateMasks= configuration.getConfiguredTextHoverStateMasks(getSourceViewer(), t);
+
+      ISourceViewer sourceViewer= getSourceViewer();
+      if (sourceViewer instanceof ITextViewerExtension2) {
+        if (stateMasks != null) {
+          for (int j= 0; j < stateMasks.length; j++)   {
+            int stateMask= stateMasks[j];
+            ITextHover textHover= configuration.getTextHover(sourceViewer, t, stateMask);
+            ((ITextViewerExtension2)sourceViewer).setTextHover(textHover, t, stateMask);
+          }
+        } else {
+          ITextHover textHover= configuration.getTextHover(sourceViewer, t);
+          ((ITextViewerExtension2)sourceViewer).setTextHover(textHover, t, ITextViewerExtension2.DEFAULT_HOVER_STATE_MASK);
+        }
+      } else
+        sourceViewer.setTextHover(configuration.getTextHover(sourceViewer, t), t);
+    }
+  }
+  
+  /*
+   * @see net.sourceforge.phpdt.internal.ui.viewsupport.IViewPartInputProvider#getViewPartInput()
+   */
+  public Object getViewPartInput() {
+    return getEditorInput().getAdapter(IResource.class);
+  }
+
+  /*
+   * @see org.eclipse.ui.IWorkbenchPart#createPartControl(org.eclipse.swt.
+   * widgets.Composite)
+   */
+  public void createPartControl(Composite parent) {
+    super.createPartControl(parent);
+
+    IInformationControlCreator informationControlCreator =
+      new IInformationControlCreator() {
+      public IInformationControl createInformationControl(Shell parent) {
+        boolean cutDown = false;
+        int style = cutDown ? SWT.NONE : (SWT.V_SCROLL | SWT.H_SCROLL);
+        return new DefaultInformationControl(
+          parent,
+          SWT.RESIZE,
+          style,
+          new HTMLTextPresenter(cutDown));
+      }
+    };
+
+    fInformationPresenter = new InformationPresenter(informationControlCreator);
+    fInformationPresenter.setSizeConstraints(60, 10, true, true);
+    fInformationPresenter.install(getSourceViewer());
+  }
+
+  /**
+   * Returns this document's complete text.
+   *
+   * @return the document's complete text
+   */
+  public String get() {
+    IDocument doc =
+      this.getDocumentProvider().getDocument(this.getEditorInput());
+    return doc.get();
+  }
+
+  /**
+   *  Returns the standard action group of this editor.
+   */
+  protected ActionGroup getActionGroup() {
+    return fActionGroups;
+  }
+
+  public PHPContentOutlinePage getfOutlinePage() {
+    return fOutlinePage;
+  }
+
+  /** The <code>PHPEditor</code> implementation of this 
+   * <code>AbstractTextEditor</code> method extend the 
+   * actions to add those specific to the receiver
+   */
+  protected void createActions() {
+    super.createActions();
+
+    Action action;
+    //    setAction(
+    //      "ContentAssistProposal",
+    //      new TextOperationAction(
+    //        PHPEditorMessages.getResourceBundle(),
+    //        "ContentAssistProposal.",
+    //        this,
+    //        ISourceViewer.CONTENTASSIST_PROPOSALS));
+    action = new ContentAssistAction(PHPEditorMessages.getResourceBundle(), "ContentAssistProposal.", this); //$NON-NLS-1$
+    action.setActionDefinitionId(
+      PHPEditorActionDefinitionIds.CONTENT_ASSIST_PROPOSALS);
+    setAction("ContentAssistProposal", action); //$NON-NLS-1$
+
+    setAction(
+      "ContentAssistTip",
+      new TextOperationAction(
+        PHPEditorMessages.getResourceBundle(),
+        "ContentAssistTip.",
+        this,
+        ISourceViewer.CONTENTASSIST_CONTEXT_INFORMATION));
+
+    action =
+      new TextOperationAction(
+        PHPEditorMessages.getResourceBundle(),
+        "Comment.",
+        this,
+        ITextOperationTarget.PREFIX);
+    action.setActionDefinitionId(PHPEditorActionDefinitionIds.COMMENT);
+    setAction("Comment", action);
+
+    action =
+      new TextOperationAction(
+        PHPEditorMessages.getResourceBundle(),
+        "Uncomment.",
+        this,
+        ITextOperationTarget.STRIP_PREFIX);
+    action.setActionDefinitionId(PHPEditorActionDefinitionIds.UNCOMMENT);
+    setAction("Uncomment", action);
+
+    action = new TextOperationAction(PHPEditorMessages.getResourceBundle(), "Format.", this, ISourceViewer.FORMAT); //$NON-NLS-1$
+    action.setActionDefinitionId(PHPEditorActionDefinitionIds.FORMAT);
+    setAction("Format", action); //$NON-NLS-1$
+
+    markAsStateDependentAction("ContentAssistProposal", true); //$NON-NLS-1$
+    markAsStateDependentAction("Comment", true); //$NON-NLS-1$
+    markAsStateDependentAction("Uncomment", true); //$NON-NLS-1$
+    markAsStateDependentAction("Format", true); //$NON-NLS-1$
+
+    action = new GotoMatchingBracketAction(this);
+    action.setActionDefinitionId(
+      PHPEditorActionDefinitionIds.GOTO_MATCHING_BRACKET);
+    setAction(GotoMatchingBracketAction.GOTO_MATCHING_BRACKET, action);
+
+    fGenerateActionGroup =
+      new GenerateActionGroup(this, ITextEditorActionConstants.GROUP_EDIT);
+
+    fActionGroups =
+      new CompositeActionGroup(new ActionGroup[] { fGenerateActionGroup });
+
+    // We have to keep the context menu group separate to have better control over positioning
+    fContextMenuGroup =
+      new CompositeActionGroup(new ActionGroup[] { fGenerateActionGroup });
+    //      rg, 
+    //      new LocalHistoryActionGroup(this, ITextEditorActionConstants.GROUP_EDIT)});
+
+    //    if (fValidationThread == null) {
+    //      fValidationThread =
+    //        new PHPSyntaxParserThread(this, getSourceViewer());
+    //      //Thread defaults
+    //
+    //      fValidationThread.start();
+    //    }
+    //
+    //    fValidationThread.setText(getSourceViewer().getTextWidget().getText());
+  }
+
+  /** The <code>PHPEditor</code> implementation of this 
+   * <code>AbstractTextEditor</code> method performs any extra 
+   * disposal actions required by the php editor.
+   */
+  public void dispose() {
+    PHPEditorEnvironment.disconnect(this);
+    if (fOutlinePage != null)
+      fOutlinePage.setInput(null);
+
+    if (fActionGroups != null)
+      fActionGroups.dispose();
+
+    super.dispose();
+  }
+
+  /** The <code>PHPEditor</code> implementation of this 
+   * <code>AbstractTextEditor</code> method performs any extra 
+   * revert behavior required by the php editor.
+   */
+  public void doRevertToSaved() {
+    super.doRevertToSaved();
+    if (fOutlinePage != null)
+      fOutlinePage.update();
+  }
+
+  /** The <code>PHPEditor</code> implementation of this 
+   * <code>AbstractTextEditor</code> method performs any extra 
+   * save behavior required by the php editor.
+   */
+  public void doSave(IProgressMonitor monitor) {
+    super.doSave(monitor);
+    // compile or not, according to the user preferences
+    IPreferenceStore store = getPreferenceStore(); // fPHPPrefStore;
+    if (store.getBoolean(PHPeclipsePlugin.PHP_PARSE_ON_SAVE)) {
+      IAction a = PHPParserAction.getInstance();
+      if (a != null)
+        a.run();
+    }
+    if (fOutlinePage != null)
+      fOutlinePage.update();
+  }
+
+  /** The <code>PHPEditor</code> implementation of this 
+   * <code>AbstractTextEditor</code> method performs any extra 
+   * save as behavior required by the php editor.
+   */
+  public void doSaveAs() {
+    super.doSaveAs();
+    if (fOutlinePage != null)
+      fOutlinePage.update();
+  }
+
+  /** The <code>PHPEditor</code> implementation of this 
+   * <code>AbstractTextEditor</code> method performs sets the 
+   * input of the outline page after AbstractTextEditor has set input.
+   */
+  protected void doSetInput(IEditorInput input) throws CoreException {
+    super.doSetInput(input);
+    if (fOutlinePage != null)
+      fOutlinePage.setInput(input);
+  }
+
+  /*
+   * @see org.phpeclipse.phpdt.internal.ui.viewsupport.IViewPartInputProvider#getViewPartInput()
+   */
+  //  public Object getViewPartInput() {
+  //    return getEditorInput().getAdapter(IFile.class);
+  //  }
+
+  /** The <code>PHPEditor</code> implementation of this 
+   * <code>AbstractTextEditor</code> method adds any 
+   * PHPEditor specific entries.
+   */
+  public void editorContextMenuAboutToShow(MenuManager menu) {
+    super.editorContextMenuAboutToShow(menu);
+
+    addAction(menu, ITextEditorActionConstants.GROUP_EDIT, "Format"); //$NON-NLS-1$
+
+    ActionContext context =
+      new ActionContext(getSelectionProvider().getSelection());
+    fContextMenuGroup.setContext(context);
+    fContextMenuGroup.fillContextMenu(menu);
+    fContextMenuGroup.setContext(null);
+  }
+
+  protected void updateStateDependentActions() {
+    super.updateStateDependentActions();
+    fGenerateActionGroup.editorStateChanged();
+  }
+
+  /** The <code>PHPEditor</code> implementation of this 
+   * <code>AbstractTextEditor</code> method performs gets
+   * the java content outline page if request is for a an 
+   * outline page.
+   */
+  public Object getAdapter(Class required) {
+    if (IContentOutlinePage.class.equals(required)) {
+      if (fOutlinePage == null) {
+        fOutlinePage = new PHPContentOutlinePage(getDocumentProvider(), this);
+        if (getEditorInput() != null)
+          fOutlinePage.setInput(getEditorInput());
+      }
+      return fOutlinePage;
+    }
+    return super.getAdapter(required);
+  }
+
+  //  public void openContextHelp() {
+  //    IDocument doc = this.getDocumentProvider().getDocument(this.getEditorInput());
+  //    ITextSelection selection = (ITextSelection) this.getSelectionProvider().getSelection();
+  //    int pos = selection.getOffset();
+  //    String word = getFunctionName(doc, pos);
+  //    openContextHelp(word);
+  //  }
+  //
+  //  private void openContextHelp(String word) {
+  //    open(word);
+  //  }
+  //
+  //  public static void open(String word) {
+  //    IHelp help = WorkbenchHelp.getHelpSupport();
+  //    if (help != null) {
+  //      IHelpResource helpResource = new PHPFunctionHelpResource(word);
+  //      WorkbenchHelp.getHelpSupport().displayHelpResource(helpResource);
+  //    } else {
+  //      //   showMessage(shell, dialogTitle, ActionMessages.getString("Open help not available"), false); //$NON-NLS-1$
+  //    }
+  //  }
+
+  //   private String getFunctionName(IDocument doc, int pos) {
+  //           Point word = PHPWordExtractor.findWord(doc, pos);
+  //           if (word != null) {
+  //                   try {
+  //                           return doc.get(word.x, word.y).replace('_', '-');
+  //                   } catch (BadLocationException e) {
+  //                   }
+  //           }
+  //           return "";
+  //   }
+
+  /*
+   * @see AbstractTextEditor#handlePreferenceStoreChanged(PropertyChangeEvent)
+   */
+  protected void handlePreferenceStoreChanged(PropertyChangeEvent event) {
+
+    try {
+
+      ISourceViewer sourceViewer = getSourceViewer();
+      if (sourceViewer == null)
+        return;
+
+      String property = event.getProperty();
+
+      if (PreferenceConstants.EDITOR_TAB_WIDTH.equals(property)) {
+        Object value = event.getNewValue();
+        if (value instanceof Integer) {
+          sourceViewer.getTextWidget().setTabs(((Integer) value).intValue());
+        } else if (value instanceof String) {
+          sourceViewer.getTextWidget().setTabs(
+            Integer.parseInt((String) value));
+        }
+        return;
+      }
+
+      if (LINE_NUMBER_RULER.equals(property)) {
+        if (isLineNumberRulerVisible())
+          showLineNumberRuler();
+        else
+          hideLineNumberRuler();
+        return;
+      }
+
+      if (fLineNumberRulerColumn != null
+        && (LINE_NUMBER_COLOR.equals(property)
+          || PREFERENCE_COLOR_BACKGROUND_SYSTEM_DEFAULT.equals(property)
+          || PREFERENCE_COLOR_BACKGROUND.equals(property))) {
+
+        initializeLineNumberRulerColumn(fLineNumberRulerColumn);
+      }
+
+      if (isJavaEditorHoverProperty(property)) {
+        updateHoverBehavior();
+      }
+
+    } finally {
+      super.handlePreferenceStoreChanged(event);
+    }
+  }
+
+  //  /*
+  //     * @see AbstractTextEditor#handlePreferenceStoreChanged(PropertyChangeEvent)
+  //     */
+  //  protected void handlePreferenceStoreChanged(PropertyChangeEvent event) {
+  //
+  //    try {
+  //
+  //      ISourceViewer sourceViewer = getSourceViewer();
+  //      if (sourceViewer == null)
+  //        return;
+  //
+  //      String property = event.getProperty();
+  //
+  //      //      if (JavaSourceViewerConfiguration.PREFERENCE_TAB_WIDTH.equals(property)) {
+  //      //        Object value= event.getNewValue();
+  //      //        if (value instanceof Integer) {
+  //      //          sourceViewer.getTextWidget().setTabs(((Integer) value).intValue());
+  //      //        } else if (value instanceof String) {
+  //      //          sourceViewer.getTextWidget().setTabs(Integer.parseInt((String) value));
+  //      //        }
+  //      //        return;
+  //      //      }
+  //
+  //      if (IPreferenceConstants.LINE_NUMBER_RULER.equals(property)) {
+  //        if (isLineNumberRulerVisible())
+  //          showLineNumberRuler();
+  //        else
+  //          hideLineNumberRuler();
+  //        return;
+  //      }
+  //
+  //      if (fLineNumberRulerColumn != null
+  //        && (IPreferenceConstants.LINE_NUMBER_COLOR.equals(property)
+  //          || PREFERENCE_COLOR_BACKGROUND_SYSTEM_DEFAULT.equals(property)
+  //          || PREFERENCE_COLOR_BACKGROUND.equals(property))) {
+  //
+  //        initializeLineNumberRulerColumn(fLineNumberRulerColumn);
+  //      }
+  //
+  //    } finally {
+  //      super.handlePreferenceStoreChanged(event);
+  //    }
+  //  }
+
+  private boolean isJavaEditorHoverProperty(String property) {
+    return PreferenceConstants.EDITOR_DEFAULT_HOVER.equals(property)
+      || PreferenceConstants.EDITOR_NONE_HOVER.equals(property)
+      || PreferenceConstants.EDITOR_CTRL_HOVER.equals(property)
+      || PreferenceConstants.EDITOR_SHIFT_HOVER.equals(property)
+      || PreferenceConstants.EDITOR_CTRL_ALT_HOVER.equals(property)
+      || PreferenceConstants.EDITOR_CTRL_SHIFT_HOVER.equals(property)
+      || PreferenceConstants.EDITOR_CTRL_ALT_SHIFT_HOVER.equals(property)
+      || PreferenceConstants.EDITOR_ALT_SHIFT_HOVER.equals(property);
+  }
+
+  /**
+   * Shows the line number ruler column.
+   */
+  private void showLineNumberRuler() {
+    IVerticalRuler v = getVerticalRuler();
+    if (v instanceof CompositeRuler) {
+      CompositeRuler c = (CompositeRuler) v;
+      c.addDecorator(1, createLineNumberRulerColumn());
+    }
+  }
+
+  /**
+   * Return whether the line number ruler column should be 
+   * visible according to the preference store settings.
+   * @return <code>true</code> if the line numbers should be visible
+   */
+  private boolean isLineNumberRulerVisible() {
+    IPreferenceStore store = getPreferenceStore();
+    return store.getBoolean(LINE_NUMBER_RULER);
+  }
+  /**
+   * Hides the line number ruler column.
+   */
+  private void hideLineNumberRuler() {
+    IVerticalRuler v = getVerticalRuler();
+    if (v instanceof CompositeRuler) {
+      CompositeRuler c = (CompositeRuler) v;
+      try {
+        c.removeDecorator(1);
+      } catch (Throwable e) {
+      }
+    }
+  }
+
+  /**
+   * Initializes the given line number ruler column from the preference store.
+   * @param rulerColumn the ruler column to be initialized
+   */
+  protected void initializeLineNumberRulerColumn(LineNumberRulerColumn rulerColumn) {
+    JavaTextTools textTools = PHPeclipsePlugin.getDefault().getJavaTextTools();
+    IColorManager manager = textTools.getColorManager();
+
+    IPreferenceStore store = getPreferenceStore();
+    if (store != null) {
+
+      RGB rgb = null;
+      // foreground color
+      if (store.contains(LINE_NUMBER_COLOR)) {
+        if (store.isDefault(LINE_NUMBER_COLOR))
+          rgb = PreferenceConverter.getDefaultColor(store, LINE_NUMBER_COLOR);
+        else
+          rgb = PreferenceConverter.getColor(store, LINE_NUMBER_COLOR);
+      }
+      rulerColumn.setForeground(manager.getColor(rgb));
+
+      rgb = null;
+      // background color
+      if (!store.getBoolean(PREFERENCE_COLOR_BACKGROUND_SYSTEM_DEFAULT)) {
+        if (store.contains(PREFERENCE_COLOR_BACKGROUND)) {
+          if (store.isDefault(PREFERENCE_COLOR_BACKGROUND))
+            rgb =
+              PreferenceConverter.getDefaultColor(
+                store,
+                PREFERENCE_COLOR_BACKGROUND);
+          else
+            rgb =
+              PreferenceConverter.getColor(store, PREFERENCE_COLOR_BACKGROUND);
+        }
+      }
+      rulerColumn.setBackground(manager.getColor(rgb));
+    }
+  }
+
+  /**
+   * Creates a new line number ruler column that is appropriately initialized.
+   */
+  protected IVerticalRulerColumn createLineNumberRulerColumn() {
+    fLineNumberRulerColumn = new LineNumberRulerColumn();
+    initializeLineNumberRulerColumn(fLineNumberRulerColumn);
+    return fLineNumberRulerColumn;
+  }
+
+  /*
+   * @see AbstractTextEditor#createVerticalRuler()
+   */
+  protected IVerticalRuler createVerticalRuler() {
+    CompositeRuler ruler = new CompositeRuler();
+    ruler.addDecorator(0, new AnnotationRulerColumn(VERTICAL_RULER_WIDTH));
+    if (isLineNumberRulerVisible())
+      ruler.addDecorator(1, createLineNumberRulerColumn());
+    return ruler;
+  }
+
+  /* (non-Javadoc)
+   * Method declared on TextEditor
+   */
+  protected void initializeEditor() {
+    IPreferenceStore store = PHPeclipsePlugin.getDefault().getPreferenceStore();
+    PHPEditorEnvironment.connect(this);
+
+    //    store.addPropertyChangeListener(new IPropertyChangeListener() {
+    //      public void propertyChange(PropertyChangeEvent event) {
+    //        PHPCodeScanner scanner = PHPEditorEnvironment.getPHPCodeScanner();
+    //        if (scanner != null) {
+    //          scanner.updateToken(PHPEditorEnvironment.getPHPColorProvider());
+    //        }
+    //        if (getSourceViewer() != null) {
+    //          getSourceViewer().invalidateTextPresentation();
+    //        }
+    //
+    //        String property = event.getProperty();
+    //        if (IPreferenceConstants.LINE_NUMBER_RULER.equals(property)) {
+    //          if (isLineNumberRulerVisible())
+    //            showLineNumberRuler();
+    //          else
+    //            hideLineNumberRuler();
+    //          return;
+    //        }
+    //      }
+    //    });
+  }
+
+  private static IRegion getSignedSelection(ITextViewer viewer) {
+
+    StyledText text = viewer.getTextWidget();
+    int caretOffset = text.getCaretOffset();
+    Point selection = text.getSelection();
+
+    // caret left
+    int offset, length;
+    if (caretOffset == selection.x) {
+      offset = selection.y;
+      length = selection.x - selection.y;
+
+      // caret right
+    } else {
+      offset = selection.x;
+      length = selection.y - selection.x;
+    }
+
+    return new Region(offset, length);
+  }
+
+  private final static char[] BRACKETS = { '{', '}', '(', ')', '[', ']' };
+
+  private static boolean isBracket(char character) {
+    for (int i = 0; i != BRACKETS.length; ++i)
+      if (character == BRACKETS[i])
+        return true;
+    return false;
+  }
+
+  private static boolean isSurroundedByBrackets(
+    IDocument document,
+    int offset) {
+    if (offset == 0 || offset == document.getLength())
+      return false;
+
+    try {
+      return isBracket(document.getChar(offset - 1))
+        && isBracket(document.getChar(offset));
+
+    } catch (BadLocationException e) {
+      return false;
+    }
+  }
+  /**
+    * Jumps to the matching bracket.
+    */
+  public void gotoMatchingBracket() {
+
+    if (fBracketMatcher == null)
+      fBracketMatcher = new PHPPairMatcher(BRACKETS);
+
+    ISourceViewer sourceViewer = getSourceViewer();
+    IDocument document = sourceViewer.getDocument();
+    if (document == null)
+      return;
+
+    IRegion selection = getSignedSelection(sourceViewer);
+
+    int selectionLength = Math.abs(selection.getLength());
+    if (selectionLength > 1) {
+      setStatusLineErrorMessage(PHPEditorMessages.getString("GotoMatchingBracket.error.invalidSelection")); //$NON-NLS-1$              
+      sourceViewer.getTextWidget().getDisplay().beep();
+      return;
+    }
+
+    // #26314
+    int sourceCaretOffset = selection.getOffset() + selection.getLength();
+    if (isSurroundedByBrackets(document, sourceCaretOffset))
+      sourceCaretOffset -= selection.getLength();
+
+    IRegion region = fBracketMatcher.match(document, sourceCaretOffset);
+    if (region == null) {
+      setStatusLineErrorMessage(PHPEditorMessages.getString("GotoMatchingBracket.error.noMatchingBracket")); //$NON-NLS-1$             
+      sourceViewer.getTextWidget().getDisplay().beep();
+      return;
+    }
+
+    int offset = region.getOffset();
+    int length = region.getLength();
+
+    if (length < 1)
+      return;
+
+    int anchor = fBracketMatcher.getAnchor();
+    int targetOffset =
+      (PHPPairMatcher.RIGHT == anchor) ? offset : offset + length - 1;
+
+    boolean visible = false;
+    if (sourceViewer instanceof ITextViewerExtension3) {
+      ITextViewerExtension3 extension = (ITextViewerExtension3) sourceViewer;
+      visible = (extension.modelOffset2WidgetOffset(targetOffset) > -1);
+    } else {
+      IRegion visibleRegion = sourceViewer.getVisibleRegion();
+      visible =
+        (targetOffset >= visibleRegion.getOffset()
+          && targetOffset < visibleRegion.getOffset() + visibleRegion.getLength());
+    }
+
+    if (!visible) {
+      setStatusLineErrorMessage(PHPEditorMessages.getString("GotoMatchingBracket.error.bracketOutsideSelectedElement")); //$NON-NLS-1$         
+      sourceViewer.getTextWidget().getDisplay().beep();
+      return;
+    }
+
+    if (selection.getLength() < 0)
+      targetOffset -= selection.getLength();
+
+    sourceViewer.setSelectedRange(targetOffset, selection.getLength());
+    sourceViewer.revealRange(targetOffset, selection.getLength());
+  }
+  /**
+     * Ses the given message as error message to this editor's status line.
+     * @param msg message to be set
+     */
+  protected void setStatusLineErrorMessage(String msg) {
+    IEditorStatusLine statusLine =
+      (IEditorStatusLine) getAdapter(IEditorStatusLine.class);
+    if (statusLine != null)
+      statusLine.setMessage(true, msg, null);
+  }
+
+  /**
+     * Returns a segmentation of the line of the given document appropriate for bidi rendering.
+     * The default implementation returns only the string literals of a php code line as segments.
+     * 
+     * @param document the document
+     * @param lineOffset the offset of the line
+     * @return the line's bidi segmentation
+     * @throws BadLocationException in case lineOffset is not valid in document
+     */
+  public static int[] getBidiLineSegments(IDocument document, int lineOffset)
+    throws BadLocationException {
+
+    IRegion line = document.getLineInformationOfOffset(lineOffset);
+    ITypedRegion[] linePartitioning =
+      document.computePartitioning(lineOffset, line.getLength());
+
+    List segmentation = new ArrayList();
+    for (int i = 0; i < linePartitioning.length; i++) {
+      if (IPHPPartitionScannerConstants
+        .PHP_STRING
+        .equals(linePartitioning[i].getType()))
+        segmentation.add(linePartitioning[i]);
+    }
+
+    if (segmentation.size() == 0)
+      return null;
+
+    int size = segmentation.size();
+    int[] segments = new int[size * 2 + 1];
+
+    int j = 0;
+    for (int i = 0; i < size; i++) {
+      ITypedRegion segment = (ITypedRegion) segmentation.get(i);
+
+      if (i == 0)
+        segments[j++] = 0;
+
+      int offset = segment.getOffset() - lineOffset;
+      if (offset > segments[j - 1])
+        segments[j++] = offset;
+
+      if (offset + segment.getLength() >= line.getLength())
+        break;
+
+      segments[j++] = offset + segment.getLength();
+    }
+
+    if (j < segments.length) {
+      int[] result = new int[j];
+      System.arraycopy(segments, 0, result, 0, j);
+      segments = result;
+    }
+
+    return segments;
+  }
+  /**
+     * Returns a segmentation of the given line appropriate for bidi rendering. The default
+     * implementation returns only the string literals of a php code line as segments.
+     * 
+     * @param lineOffset the offset of the line
+     * @param line the content of the line
+     * @return the line's bidi segmentation
+     */
+  protected int[] getBidiLineSegments(int lineOffset, String line) {
+    IDocumentProvider provider = getDocumentProvider();
+    if (provider != null && line != null && line.length() > 0) {
+      IDocument document = provider.getDocument(getEditorInput());
+      if (document != null)
+        try {
+          return getBidiLineSegments(document, lineOffset);
+        } catch (BadLocationException x) {
+          // ignore
+        }
+    }
+    return null;
+  }
+
+  /*
+   * @see AbstractTextEditor#createSourceViewer(Composite, IVerticalRuler, int)
+   */
+  protected final ISourceViewer createSourceViewer(
+    Composite parent,
+    IVerticalRuler ruler,
+    int styles) {
+    ISourceViewer viewer = createJavaSourceViewer(parent, ruler, styles);
+    StyledText text = viewer.getTextWidget();
+    text.addBidiSegmentListener(new BidiSegmentListener() {
+      public void lineGetSegments(BidiSegmentEvent event) {
+        event.segments = getBidiLineSegments(event.lineOffset, event.lineText);
+      }
+    });
+    //   JavaUIHelp.setHelp(this, text, IJavaHelpContextIds.JAVA_EDITOR);
+    return viewer;
+  }
+
+  /*
+   * @see AbstractTextEditor#createSourceViewer(Composite, IVerticalRuler, int)
+   */
+  protected ISourceViewer createJavaSourceViewer(
+    Composite parent,
+    IVerticalRuler ruler,
+    int styles) {
+    return super.createSourceViewer(parent, ruler, styles);
+  }
 }