How to use

initializeWidgetContents

method

in

org.eclipse.jface.text.TextViewer

/**
 * Sets this viewer's visible document. The visible document represents the
 * visible region of the viewer's input document.
 *
 * @param document the visible document
 */
protected void setVisibleDocument(IDocument document) {
  if (fVisibleDocument == document && fVisibleDocument instanceof ChildDocument) {
    // optimization for new child documents
    return;
  }
  if (fVisibleDocument != null) {
    if (fVisibleDocumentListener != null)
      fVisibleDocument.removeDocumentListener(fVisibleDocumentListener);
    if (fVisibleDocument != document)
      freeSlaveDocument(fVisibleDocument);
  }
  fVisibleDocument= document;
  initializeDocumentInformationMapping(fVisibleDocument);
  initializeWidgetContents();
  fFindReplaceDocumentAdapter= null;
  if (fVisibleDocument != null && fVisibleDocumentListener != null)
    fVisibleDocument.addDocumentListener(fVisibleDocumentListener);
}

/**
 * Sets this viewer's visible document. The visible document represents the
 * visible region of the viewer's input document.
 *
 * @param document the visible document
 */
protected void setVisibleDocument(IDocument document) {
  if (fVisibleDocument == document && fVisibleDocument instanceof ChildDocument) {
    // optimization for new child documents
    return;
  }
  if (fVisibleDocument != null) {
    if (fVisibleDocumentListener != null)
      fVisibleDocument.removeDocumentListener(fVisibleDocumentListener);
    if (fVisibleDocument != document)
      freeSlaveDocument(fVisibleDocument);
  }
  fVisibleDocument= document;
  initializeDocumentInformationMapping(fVisibleDocument);
  initializeWidgetContents();
  fFindReplaceDocumentAdapter= null;
  if (fVisibleDocument != null && fVisibleDocumentListener != null)
    fVisibleDocument.addDocumentListener(fVisibleDocumentListener);
}