Examples of org.eclipse.jface.text.Position

org.eclipse.jface.text.Position
Positions describe text ranges of a document. Positions are adapted to changes applied to that document. The text range is specified by an offset and a length. Positions can be marked as deleted. Deleted positions are considered to no longer represent a valid text range in the managing document.
Positions attached to documents are usually updated by position updaters. Because position updaters are freely definable and because of the frequency in which they are used, the fields of a position are made publicly accessible. Clients other than position updaters are not allowed to access these public fields.

Positions cannot be used as keys in hash tables as they override equals and hashCode as they would be value objects.
@see org.eclipse.jface.text.IDocument


            /*
             * store the position and annotation - the position is needed to create the fold, while
             * the annotation is needed to remove it
             */
            Tuple t = new Tuple(new Position(offset, length), new ProjectionAnnotation(collapse));
            tuples.add(t);
        }
    }

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    private void removeFolds(Set toRemove)
    {
        for (Iterator iter = folds.iterator(); iter.hasNext();)
        {
            Tuple t = (Tuple) iter.next();
            Position p = getAnnotations().getPosition(t.annotation);


            if ((p != null) && (p.isDeleted() || ! toRemove.contains(t)))
            {
                getAnnotations().removeAnnotation(t.annotation);
                iter.remove();
            }
            else

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          String text=document.get(offset, length);
          org.jbehave.plugin.eclipse.model.StoryLine storyLine = org.jbehave.plugin.eclipse.model.StoryLine.parseLine(text);
          if ((storyLine!=null)){
            if (storyLine.getKeyWord().equals("Scenario:")){
            Position p= new Position(offset, length);
            document.addPosition(SEGMENTS, p);
            fContent.add(new Segment(storyLine.asText(), p)); //$NON-NLS-1$
            }
          }

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      }
      if (widgetInsertionOffset == -1)
        return;


      // mark caret
      Position caret= new Position(insertionOffset, 0);
      document.addPosition(caret);
      st.setSelectionRange(widgetInsertionOffset, 0);


      // operate directly on the widget
      st.replaceTextRange(widgetInsertionOffset, 0, st.getLineDelimiter());


      // restore caret unless an auto-indenter has already moved the caret
      // then leave it alone
      document.removePosition(caret);
      if (updateCaret && st.getSelection().x == widgetInsertionOffset) {
        int widgetCaret= AbstractTextEditor.modelOffset2WidgetOffset(sv, caret.getOffset());
        if (widgetCaret != -1)
          st.setSelectionRange(widgetCaret, 0);
        st.showSelection();
      }

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   * @see org.eclipse.ui.texteditor.IVerticalRulerListener#annotationDefaultSelected(org.eclipse.ui.texteditor.VerticalRulerEvent)
   */
  public void annotationDefaultSelected(VerticalRulerEvent event) {
    Annotation a= event.getSelectedAnnotation();
    IAnnotationModel model= getAnnotationModel();
    Position position= model.getPosition(a);
    if (position == null)
      return;


    getTextEditor().selectAndReveal(position.offset, position.length);
  }

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      ITextSelection selection= (ITextSelection) s;
      if(selection.getOffset() == 0 && selection.getLength() == 0)
        return;


      IDocument document= getDocument(part);
      Position position= new Position(selection.getOffset(), selection.getLength());
      if (installOnDocument(document, position)) {
        fDocument= document;
        fPosition= position;
        if (!part.isDirty())
          fSavedPosition= new Position(fPosition.offset, fPosition.length);
      }
    }
  }

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      Integer offset= memento.getInteger(TAG_X);
      Integer length= memento.getInteger(TAG_Y);
      String deleted= memento.getString(TAG_INFO);


      if (offset != null && length != null) {
        Position p= new Position(offset.intValue(), length.intValue());
        if (deleted != null)
          p.isDeleted= INFO_DELETED.equals(deleted) ? true : false;


        // activate
        if (installOnDocument(fDocument, p)) {
          fPosition= p;
          if (!part.isDirty())
            fSavedPosition= new Position(fPosition.offset, fPosition.length);
        }
      }
    }
  }

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  public void partSaved(IEditorPart part) {
    // http://dev.eclipse.org/bugs/show_bug.cgi?id=25440
    if (fPosition == null || fPosition.isDeleted())
      fSavedPosition= null;
    else
      fSavedPosition= new Position(fPosition.offset, fPosition.length);
  }

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      fPosition.offset= selection.getOffset();
      fPosition.length= selection.getLength();
      fPosition.isDeleted= false;


      if (!part.isDirty())
        fSavedPosition= new Position(fPosition.offset, fPosition.length);
    }
  }

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        {
        throw new RuntimeException("CoreException creating IMarker", e);
        }
    MarkerAnnotation annotation = new MarkerAnnotation(marker);
    annotation.setType(getAnnotationType(a.details));
    Position position = new Position(a.selection.pos, a.selection.length);
    annotModel.addAnnotation(annotation, position);
    annotations.put(annotation,a);
    }

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