compareMouseAction( action1, action2 ) {

		if ( action1.operation == action2.operation ) {

			if ( action1.mouse == action2.mouse && action1.key == action2.key ) {

				return true;

			} else {

				return false;

			}

		} else {

			return false;

		}

	}
Compare two mouse actions.

@private
@param {Object} action1 - The first mouse action.
@param {Object} action2 - The second mouse action.
@returns {boolean} `true` if action1 and action 2 are the same mouse action, `false` otherwise.