Examples of org.eclipse.jface.text.IDocument.removeDocumentListener()

org.eclipse.jface.text.IDocument.removeDocumentListener()
Removes the listener from the document's list of document listeners. If the listener is not registered with the document nothing happens.
An IDocumentListener may call back to this method when being inside a document notification. @param listener the listener to be removed

    public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
      // Detach from old
      if (oldInput != null) {
        IDocument document = fDocumentProvider.getDocument(oldInput);
        if (document != null) {
          document.removeDocumentListener(this);
        }
      }
      fContent = null;
      // Attach to new
      if (newInput == null)

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   */
  private void unregister() {
    if (documentListener != null) {
      IDocument document= contentAssistSubjectControlAdapter.getDocument();
      if (document != null)
        document.removeDocumentListener(documentListener);
      documentListener= null;
    }
    documentEvents.clear();


    if (keyListener != null && contentAssistSubjectControlAdapter.getControl() != null && contentAssistSubjectControlAdapter.getControl().getScene() != null) {

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