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 Deleted positions are considered to no longer represent a valid text range in the managing document.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

        IRegion region = frAdapter.find(0, ToolMethod.CEX_SIGNATURE_REGEX, true, false, false, true);
        String methodSignature = null;
        while (region != null){
          int offset = region.getOffset();
          int length = region.getLength();
          Position p = new Position(offset, length);
          document.addPosition(SEGMENTS, p);
          methodSignature = document.get(region.getOffset(), region.getLength());
          Matcher sig = ToolMethod.cexSignaturePattern.matcher(methodSignature);
          if (sig.find()){
            methodSignature = sig.group(1);
            methodSignature = methodSignature.replaceAll("\\s","");
            methodSignature = methodSignature.substring(methodSignature.indexOf(".")+1);
            fContent.add(new Segment(methodSignature, p, "icons/private_method.gif"));
          }
          region = frAdapter.find(offset+length, ToolMethod.CEX_SIGNATURE_REGEX, true, false, false, true);
        }
        // do the event handlers
        region = frAdapter.find(0, ToolEventHandler.CEX_SIGNATURE_REGEX, true, false, false, true);
        String ehSignature = null;
        while (region != null){
          int offset = region.getOffset();
          int length = region.getLength();
          Position p = new Position(offset, length);
          document.addPosition(SEGMENTS, p);
          ehSignature = document.get(region.getOffset(), region.getLength());
          Matcher sig = ToolEventHandler.cexSignaturePattern.matcher(ehSignature);
          if (sig.find()){
            ehSignature = sig.group(1);
            ehSignature = ehSignature.replaceAll("\\s","");
            ehSignature = ehSignature.substring(ehSignature.indexOf(".")+1);
            fContent.add(new Segment(ehSignature, p, "icons/private_event_handler.gif"));
          }
          region = frAdapter.find(offset+length, ToolEventHandler.CEX_SIGNATURE_REGEX, true, false, false, true);
        }
        // do constants
        region = frAdapter.find(0, ToolConstant.PLAN_REGEX, true, false, false, true);
        String constText = null;
        while (region != null){
          int offset = region.getOffset();
          int length = region.getLength();
          Position p = new Position(offset, length);
          document.addPosition(SEGMENTS, p);
          constText = document.get(region.getOffset(), region.getLength());
          fContent.add(new Segment(constText, p, "icons/private_constant.gif"));
          region = frAdapter.find(offset+length, ToolConstant.PLAN_REGEX, true, false, false, true);
        }
        // do classes
        region = frAdapter.find(0, ToolClass.CLASS_REGEX, true, false, false, true);
        String classText = null;
        while (region != null){
          int offset = region.getOffset();
          int length = region.getLength();
          Position p = new Position(offset, length);
          document.addPosition(SEGMENTS, p);
          classText = document.get(region.getOffset(), region.getLength());
          fContent.add(new Segment(classText, p, "icons/class.gif"));
          region = frAdapter.find(offset+length, ToolClass.CLASS_REGEX, true, false, false, true);
        }

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    SearchRequestor requestor = new SearchRequestor() {
      @Override
      public void acceptSearchMatch(final SearchMatch match) {
        IAnnotationModel model = textEditor.getDocumentProvider().getAnnotationModel(textEditor.getEditorInput());
        Annotation annotation = new Annotation("org.eclipse.jdt.ui.occurrences", false, "wicket id constant");
        model.addAnnotation(annotation, new Position(match.getOffset(), match.getLength()));
      }
    };


    SearchEngine searchEngine = new SearchEngine();
    try {

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   * org.eclipse.imp.parser.IMessageHandler#handleSimpleMessage(java.lang.
   * String, int, int, int, int, int, int)
   */
  public void handleSimpleMessage(String message, int startOffset,
      int endOffset, int startCol, int endCol, int startLine, int endLine) {
    Position pos = new Position(startOffset, endOffset - startOffset + 1);
    fMessages.add(new PositionedMessage(message, pos));
  }

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                }
            }


            ContributionAnnotation annotation = new ContributionAnnotation(
                source, model);
            addContributionAnnotation(annotation, new Position(offset, length));
        }
    }

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            .hasNext();) {
            Annotation annotation = it.next();


            if (annotation instanceof ContributionAnnotation) {


                Position pos = model.getPosition(annotation);


                if (pos == null) {
                    /*
                     * FIXME This error occurs when search/replacing lots of
                     * small stuff as client
                     */
                    log.warn("Annotation could not be found: " + annotation);
                    return;
                }


                if ((offset > pos.offset) && (offset < pos.offset + pos.length)) {
                    Position beforeOffset = new Position(pos.offset, offset
                        - pos.offset);
                    Position afterOffset = new Position(offset, pos.length
                        - (offset - pos.offset));


                    ContributionAnnotation oldAnnotation = (ContributionAnnotation) annotation;


                    removeFromHistory(oldAnnotation);

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                    }
                }
            }


            setSelectionAnnotation(source, model, new SelectionAnnotation(
                source, isCursor), new Position(offset, length));
        }
    }

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                throw new BadLocationException("Start line -1");
            int end = document.getLineOffset(bottom);
            if (end == -1 || end < start)
                throw new BadLocationException("End line -1 or less than start");
            SarosAnnotation annotation = new ViewportAnnotation(source);
            Position position = new Position(start, end - start);
            model.addAnnotation(annotation, position);
        } catch (BadLocationException e) {
            log.warn("Internal Error:", e);
        }
    }

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   * @return the corresponding Java offset for a give JSP offset
   */
  public int getJavaOffset(int jspOffset) {
    int result = -1;
    int offsetInRange = 0;
    Position jspPos, javaPos = null;


    // iterate all mapped jsp ranges
    Iterator it = fJsp2JavaMap.keySet().iterator();
    while (it.hasNext()) {
      jspPos = (Position) it.next();
      // need to count the last position as included
      if (!jspPos.includes(jspOffset) && !(jspPos.offset+jspPos.length == jspOffset))
        continue;


      offsetInRange = jspOffset - jspPos.offset;
      javaPos = (Position) fJsp2JavaMap.get(jspPos);
      if(javaPos != null)

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   * @return the corresponding JSP offset for a give Java offset
   */
  public int getJspOffset(int javaOffset) {
    int result = -1;
    int offsetInRange = 0;
    Position jspPos, javaPos = null;


    // iterate all mapped java ranges
    Iterator it = fJava2JspMap.keySet().iterator();
    while (it.hasNext()) {
      javaPos = (Position) it.next();

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   */
  public boolean javaSpansMultipleJspPartitions(int javaOffset, int javaLength) {
    HashMap java2jsp = getJava2JspMap();
    int count = 0;
    Iterator it = java2jsp.keySet().iterator();
    Position javaRange = null;
    while(it.hasNext()) {
      javaRange = (Position)it.next();
      if(javaRange.overlapsWith(javaOffset, javaLength))
        count++;
      if(count > 1)
        return true;
    }
    return false;

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