software/no.uio.ifi.refaktor/src/no/uio/ifi/refaktor/utils/DocumentUtils.java

   1 package no.uio.ifi.refaktor.utils;
   2
   3 import no.uio.ifi.refaktor.textselection.CompilationUnitTextSelection;
   4
   5 import org.eclipse.core.commands.ExecutionEvent;
   6 import org.eclipse.core.commands.ExecutionException;
   7 import org.eclipse.core.resources.IFile;
   8 import org.eclipse.jdt.core.ICompilationUnit;
   9 import org.eclipse.jdt.core.JavaModelException;
  10 import org.eclipse.jface.text.Document;
  11 import org.eclipse.jface.text.IDocument;
  12 import org.eclipse.jface.text.ITextSelection;
  13 import org.eclipse.jface.text.TextSelection;
  14 import org.eclipse.jface.viewers.ISelection;
  15 import org.eclipse.ui.IEditorPart;
  16 import org.eclipse.ui.handlers.HandlerUtil;
  17 import org.eclipse.ui.ide.ResourceUtil;
  18 import org.eclipse.ui.texteditor.ITextEditor;
  19
  20 public class DocumentUtils {
  21
  22         public static ITextEditor getEditorFrom(ExecutionEvent event) throws ExecutionException {
  23                 IEditorPart part = HandlerUtil.getActiveEditorChecked(event);
  24                 assert part instanceof ITextEditor;
  25                 return (ITextEditor) part;
  26         }
  27
  28         public static IDocument getDocumentFrom(ITextEditor editor) {
  29                 return editor.getDocumentProvider().getDocument(editor.getEditorInput());
  30         }
  31
  32         public static CompilationUnitTextSelection getStrippedCompilationUnitTextSelectionFromExecutionEvent(ExecutionEvent event)
  33                         throws ExecutionException {
  34                 ICompilationUnit compilationUnit = getCompilationUnitFromExecutionEvent(event);
  35                 IDocument document = DocumentUtils.getDocumentFromCompilationUnit(compilationUnit);
  36                 ITextSelection strippedTextSelection = ParseUtils.stripTextSelection(document, getTextSelectionFrom(event));
  37                 return new CompilationUnitTextSelection(compilationUnit, strippedTextSelection);
  38         }
  39
  40         public static CompilationUnitTextSelection getCompilationUnitTextSelectionFromExecutionEvent(ExecutionEvent event)
  41                         throws ExecutionException {
  42                 return new CompilationUnitTextSelection(getCompilationUnitFromExecutionEvent(event), getTextSelectionFrom(event));
  43         }
  44
  45         private static ICompilationUnit getCompilationUnitFromExecutionEvent(ExecutionEvent event)
  46                         throws ExecutionException {
  47                 return RefaktorHandleUtils.getCompilationUnitFromEditor(getEditorFrom(event));
  48         }
  49
  50
  51         private static TextSelection getTextSelectionFrom(ExecutionEvent event) throws ExecutionException {
  52                 ISelection selection = HandlerUtil.getCurrentSelectionChecked(event);
  53                 assert selection instanceof TextSelection;
  54                 return (TextSelection) selection;
  55         }
  56         public static void setSelectionForEditor(ISelection selection, ITextEditor editor) {
  57                 editor.getSite().getSelectionProvider().setSelection(selection);
  58         }
  59
  60         public static IDocument getDocumentFromCompilationUnit(ICompilationUnit compilationUnit) {
  61                 assert compilationUnit != null;
  62                 try {
  63                         return new Document(compilationUnit.getSource());
  64                 } catch (JavaModelException e) {
  65                         throw new RuntimeException(e);
  66                 }
  67         }
  68
  69         public static IFile getFileFromEditor(IEditorPart editor) {
  70                 return ResourceUtil.getFile(editor.getEditorInput());
  71         }
  72 }