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 Deleted positions are considered to no longer represent a valid text range in the managing document.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

    }


    Position[] positions = new Position[matches.length];
    int i = 0;
    for (int c = 0; c < matches.length; c++) {
      positions[i++] = new Position(matches[c].getOffset(),
          matches[c].getLength());
    }


    fOccurrencesFinderJob = new OccurrencesFinderJob(document, positions,
        selection, editor);

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  /**
   * @see org.eclipse.wst.sse.ui.internal.projection.AbstractFoldingStrategy#calcNewFoldPosition(org.eclipse.wst.sse.core.internal.provisional.IndexedRegion)
   */
  protected Position calcNewFoldPosition(IndexedRegion indexedRegion) {
    Position retPos = null;
    
    //only want to fold regions of the valid type and with a valid range
    if(indexedRegion.getStartOffset() >= 0 && indexedRegion.getLength() >= 0) {
      IDOMNode node = (IDOMNode)indexedRegion;
      IStructuredDocumentRegion startRegion = node.getStartStructuredDocumentRegion();

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        }
        parentConstraints.setAvailableLineWidth(lineWidth);


        // format all siblings (and their children) as long they
        // overlap with start/length
        Position formatRange = new Position(start, length);
        formatSiblings(edit, domRegion, parentConstraints, formatRange);
      }
    }
    return edit;
  }

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   *            the offset of the document region
   * @param length
   *            the length of the document region
   */
  public ReplaceNameTemplateContext(TemplateContextType type, IDocument document, int offset, int length) {
    this(type, document, new Position(offset, length));
  }

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   * @param insertOffset
   *            the offset of the document region where insert was
   *            originally requested
   */
  public ReplaceNameTemplateContext(TemplateContextType type, IDocument document, int offset, int length, int insertOffset) {
    this(type, document, new Position(offset, length));
    fInsertOffset = insertOffset;
  }

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      }


      public Position getPosition(Annotation annotation) {
        EclipseAnnotationPeer peer = (EclipseAnnotationPeer) annotation;
        AnnotationFS annotationFS = peer.getAnnotationFS();
        return new Position(annotationFS.getBegin(),
            annotationFS.getEnd() - annotationFS.getBegin());
      }


      public void removeAnnotation(Annotation annotation) {
      }

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                    // errorOffset = container.getOffset();
                    // errorLength = container.getLength();
                    // errorText = new StringBuffer(container.toString());
                    // }
                    Annotation annotation = new Annotation( ERROR_ANNOTATION_TYPE, true, errorText.toString() );
                    Position position = new Position( errorOffset, errorLength );
                    positionList.add( position );
                    viewer.getAnnotationModel().addAnnotation( annotation, position );
                }


            }

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        }
    }


    private static void createAnnotation(IFile file, final IAnnotationModel annotationModel, final String message, final int offset, final int length) {
        Annotation annotation = new DRLProblemAnnotation(message);
        Position position = new Position(0, 1);
//        Position position = new Position(offset, length);
        annotationModel.addAnnotation(annotation, position);
    }

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    protected void calculateFolding(String input) {
        // TODO replace this parsing by getting this input from the parsed rule file
        final List<Position> positions = new ArrayList<Position>();
        Matcher matcher = RULE_PATTERN.matcher(input);
        while (matcher.find()) {
            positions.add(new Position(matcher.start(1), matcher.end(1) - matcher.start(1)));
        }
        matcher = QUERY_PATTERN.matcher(input);
        while (matcher.find()) {
            positions.add(new Position(matcher.start(1), matcher.end(1) - matcher.start(1)));
        }
        matcher = TEMPLATE_PATTERN.matcher(input);
        while (matcher.find()) {
            positions.add(new Position(matcher.start(1), matcher.end(1) - matcher.start(1)));
        }
        matcher = IMPORT_PATTERN.matcher(input);
        while (matcher.find()) {
            positions.add(new Position(matcher.start(1), matcher.end(1) - matcher.start(1)));
        }
        matcher = FUNCTION_PATTERN.matcher(input);
        while (matcher.find()) {
            int start = matcher.start(1);
            // TODO also take comments, strings etc. in consideration
            // use JavaPairMatcher or similar
            int nbOpenBrackets = 1;
            for (int i = matcher.end(); i < input.length(); i++) {
                if (input.charAt(i) == '{') {
                    nbOpenBrackets++;
                } else if (input.charAt(i) == '}') {
                    if (--nbOpenBrackets == 0) {
                        positions.add(new Position(start, i - start + 1));
                        break;
                    }
                }
            }
        }

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                    int stop = invalidFilters[i].getStopToken() != null ? invalidFilters[i].getStopToken().getOffset()
                        + invalidFilters[i].getStopToken().getLength() : start
                        + invalidFilters[i].getStartToken().getLength();


                    Annotation annotation = new Annotation( "DEFAULT", true, invalidFilters[i].toString() ); //$NON-NLS-1$
                    Position position = new Position( start, stop - start );
                    positionList.add( position );
                    sourceViewer.getAnnotationModel().addAnnotation( annotation, position );
                }
            }


            for ( int i = 0; i < tokens.length; i++ )
            {
                if ( tokens[i].getType() == LdapFilterToken.ERROR )
                {


                    boolean overlaps = false;
                    for ( int k = 0; k < positionList.size(); k++ )
                    {
                        Position pos = positionList.get( k );
                        if ( pos.overlapsWith( tokens[i].getOffset(), tokens[i].getLength() ) )
                        {
                            overlaps = true;
                            break;
                        }
                    }
                    if ( !overlaps )
                    {
                        Annotation annotation = new Annotation( "DEFAULT", true, tokens[i].getValue() ); //$NON-NLS-1$
                        Position position = new Position( tokens[i].getOffset(), tokens[i].getLength() );
                        sourceViewer.getAnnotationModel().addAnnotation( annotation, position );
                    }
                }
            }
        }

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