Examples of org.eclipse.swt.widgets.Control.removeFocusListener()

org.eclipse.swt.widgets.Control.removeFocusListener()
Removes the listener from the collection of listeners who will be notified when the control gains or loses focus. @param listener the listener which should no longer be notified @exception IllegalArgumentException
- ERROR_NULL_ARGUMENT - if the listener is null
@exception SWTException
- ERROR_WIDGET_DISPOSED - if the receiver has been disposed
- ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
@see FocusListener @see #addFocusListener

                }


                if (obj instanceof Control) {
                    Control control = (Control) obj;
                    if (!control.isDisposed()) {
                        control.removeFocusListener(pyContextObserver);
                    }
                }
                return null;
            }
        };

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      Control control= fControl;
      fControl= null;
      if (Helper.okToUse(control)) {


        control.removeMouseListener(this);
        control.removeFocusListener(this);


        /*
         * 1GGYYWK: ITPJUI:ALL - Dismissing editor with code assist up causes lots of
         * Internal Errors
         */

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      Control w= fViewer.getTextWidget();
      if (Helper2.okToUse(w)) {


        w.removeMouseListener(this);
        w.removeFocusListener(this);


        /*
         * 1GGYYWK: ITPJUI:ALL - Dismissing editor with code assist up causes lots of Internal Errors
         */
        w.removeDisposeListener(this);

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          control.removeMouseListener(mouseListener);
          // Clear the instance not needed any more
          mouseListener = null;
        }
        if (focusListener != null) {
          control.removeFocusListener(focusListener);
        }


        if (tabeditingListener != null) {
          control.removeTraverseListener(tabeditingListener);
        }

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          control.removeMouseListener(mouseListener);
          // Clear the instance not needed any more
          mouseListener = null;
        }
        if (focusListener != null) {
          control.removeFocusListener(focusListener);
        }


        if (tabeditingListener != null) {
          control.removeTraverseListener(tabeditingListener);
        }

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