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 Deleted positions are considered to no longer represent a valid text range in the managing document.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


    final int activeLine= fRuler.getLineOfLastMouseButtonActivity();
    for (Iterator it= model.getAnnotationIterator(); it.hasNext();) {
      Annotation annotation= (Annotation) it.next();
      if (annotation instanceof MarkerAnnotation) {
        Position position= model.getPosition(annotation);
        if (includesLine(position, document, activeLine)) {
          return true;
        }
      }
    }

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        }
      }
    }


    if (start > -1 && end > -1)
      return new Position(start, end - start);


    return null;
  }

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   * @see #isAcceptable(IMarker)
   */
  protected final void addMarkerAnnotation(IMarker marker) {


    if (isAcceptable(marker)) {
      Position p= createPositionFromMarker(marker);
      if (p != null)
        try {
          MarkerAnnotation annotation= createMarkerAnnotation(marker);
          if (annotation != null)
            addAnnotation(annotation, p, false);

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   * @param marker the marker
   */
  protected void modifyMarkerAnnotation(IMarker marker) {
    MarkerAnnotation a= getMarkerAnnotation(marker);
    if (a != null) {
      Position p= createPositionFromMarker(marker);
      if (p != null) {
        a.update();
        modifyAnnotationPosition(a, p, false);
      }
    } else

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      for (Iterator e= getAnnotationIterator(false); e.hasNext();) {
        Object o= e.next();
        if (o instanceof MarkerAnnotation) {
          MarkerAnnotation a= (MarkerAnnotation) o;
          IMarker marker= a.getMarker();
          Position position= (Position) annotationMap.get(a);
          if ( !updateMarker(marker, document, position)) {
            if ( !fDeletedAnnotations.contains(a))
              fDeletedAnnotations.add(a);
          }
        }

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    // re-initializes the positions from the markers
    for (Iterator e= getAnnotationIterator(false); e.hasNext();) {
      Object o= e.next();
      if (o instanceof MarkerAnnotation) {
        MarkerAnnotation a= (MarkerAnnotation) o;
        Position p= createPositionFromMarker(a.getMarker());
        if (p != null) {
          removeAnnotation(a, false);
          try {
            addAnnotation(a, p, false);
          } catch (BadLocationException e1) {
            // ignore invalid position
          }
        }
      }
    }


    // add the markers of deleted positions back to the annotation model
    for (Iterator e= fDeletedAnnotations.iterator(); e.hasNext();) {
      Object o= e.next();
      if (o instanceof MarkerAnnotation) {
        MarkerAnnotation a= (MarkerAnnotation) o;
        Position p= createPositionFromMarker(a.getMarker());
        if (p != null)
          try {
            addAnnotation(a, p, false);
          } catch (BadLocationException e1) {
            // ignore invalid position

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      ArrayList allPositions = new ArrayList();
      int bestOffset = Integer.MAX_VALUE;
      while (iter.hasNext()) {
        Annotation annot = (Annotation) iter.next();
        if (RutaCorrectionProcessor.isQuickFixableType(annot)) {
          Position pos = model.getPosition(annot);
          if (pos != null && isInside(pos.offset, rangeStart, rangeEnd)) { // inside
            // our
            // range?
            allAnnotations.add(annot);
            allPositions.add(pos);
            bestOffset = processAnnotation(annot, pos, invocationLocation, bestOffset);
          }
        }
      }
      if (bestOffset == Integer.MAX_VALUE) {
        return invocationLocation;
      }
      for (int i = 0; i < allPositions.size(); i++) {
        Position pos = (Position) allPositions.get(i);
        if (isInside(bestOffset, pos.offset, pos.offset + pos.length)) {
          resultingAnnotations.add(allAnnotations.get(i));
        }
      }
      return bestOffset;
    } else {
      while (iter.hasNext()) {
        Annotation annot = (Annotation) iter.next();
        if (RutaCorrectionProcessor.isQuickFixableType(annot)) {
          Position pos = model.getPosition(annot);
          if (pos != null && isInside(invocationLocation, pos.offset, pos.offset + pos.length)) {
            resultingAnnotations.add(annot);
          }
        }
      }

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    super.possibleCompletionsClosed();
    restorePosition();
  }


  private void storePosition(int currOffset, int currLength) {
    fPosition = new Position(currOffset, currLength);
  }

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      }
      List<ASTNode> result = refFinder.getResult();
      myAnnotations = new HashMap<Annotation, Position>(result.size());
      for (ASTNode each : result) {
        Annotation annotation = new Annotation(SearchPlugin.SEARCH_ANNOTATION_TYPE, true, null);
        Position position = null;
        int sourceStart = each.sourceStart();
        int sourceEnd = each.sourceEnd();
        if (each instanceof RutaAction) {
          RutaAction e = (RutaAction) each;
          sourceStart = e.getNameStart();
          sourceEnd = e.getNameEnd();
        } else if (each instanceof RutaCondition) {
          RutaCondition e = (RutaCondition) each;
          sourceStart = e.getNameStart();
          sourceEnd = e.getNameEnd();
        }
        position = new Position(sourceStart, sourceEnd - sourceStart);
        myAnnotations.put(annotation, position);
      }
      addAnnotations(myAnnotations);
    }

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    myAnnotations = new HashMap<Annotation, Position>();
    if (rule != null) {
      Annotation annotation = new Annotation(SearchPlugin.SEARCH_ANNOTATION_TYPE, true, null);
      int sourceStart = rule.sourceStart();
      int sourceEnd = rule.sourceEnd();
      Position position = new Position(sourceStart, sourceEnd - sourceStart);
      getSourceViewer().revealRange(sourceStart, sourceEnd - sourceStart);
      myAnnotations.put(annotation, position);
    }
    addAnnotations(myAnnotations);
  }

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