How to use

CommandManager$ExecutionListener

in

org.eclipse.core.commands

/**
 * Adds an execution listener to this manager. This listener will be
 * notified if any of the commands controlled by this manager execute. This
 * can be used to support macros and instrumentation of commands.
 *
 * @param listener
 *            The listener to attach; must not be <code>null</code>.
 */
public final void addExecutionListener(final IExecutionListener listener) {
  if (listener == null) {
    throw new NullPointerException(
        "Cannot add a null execution listener"); //$NON-NLS-1$
  }
  if (executionListeners == null) {
    executionListeners = new ListenerList<>(ListenerList.IDENTITY);
    // Add an execution listener to every command.
    executionListener = new ExecutionListener();
    final Iterator<NamedHandleObject> commandItr = handleObjectsById.values().iterator();
    while (commandItr.hasNext()) {
      final Command command = (Command) commandItr.next();
      command.addExecutionListener(executionListener);
    }
  }
  executionListeners.add(listener);
}

/**
 * Adds an execution listener to this manager. This listener will be
 * notified if any of the commands controlled by this manager execute. This
 * can be used to support macros and instrumentation of commands.
 *
 * @param listener
 *            The listener to attach; must not be <code>null</code>.
 */
public final void addExecutionListener(final IExecutionListener listener) {
  if (listener == null) {
    throw new NullPointerException(
        "Cannot add a null execution listener"); //$NON-NLS-1$
  }
  if (executionListeners == null) {
    executionListeners = new ListenerList<>(ListenerList.IDENTITY);
    // Add an execution listener to every command.
    executionListener = new ExecutionListener();
    final Iterator<NamedHandleObject> commandItr = handleObjectsById.values().iterator();
    while (commandItr.hasNext()) {
      final Command command = (Command) commandItr.next();
      command.addExecutionListener(executionListener);
    }
  }
  executionListeners.add(listener);
}

/**
 * Adds an execution listener to this manager. This listener will be
 * notified if any of the commands controlled by this manager execute. This
 * can be used to support macros and instrumentation of commands.
 *
 * @param listener
 *            The listener to attach; must not be <code>null</code>.
 */
public void addExecutionListener(final IExecutionListener listener) {
  if (listener == null) {
    throw new NullPointerException(
        "Cannot add a null execution listener"); //$NON-NLS-1$
  }
  if (executionListeners == null) {
    executionListeners = new ListenerList<>(ListenerList.IDENTITY);
    // Add an execution listener to every command.
    executionListener = new ExecutionListener();
    final Iterator<NamedHandleObject> commandItr = handleObjectsById.values().iterator();
    while (commandItr.hasNext()) {
      final Command command = (Command) commandItr.next();
      command.addExecutionListener(executionListener);
    }
  }
  executionListeners.add(listener);
}