U
    8ÄT_/  ã                   @   s8   d dl mZ d dlmZ d dlmZ G dd„ deƒZdS )é    )ÚBaseStorage)ÚCookieStorage)ÚSessionStoragec                       s8   e Zd ZdZeefZ‡ fdd„Zdd„ Zdd„ Z	‡  Z
S )ÚFallbackStoragezu
    Try to store all messages in the first backend. Store any unstored
    messages in each subsequent backend.
    c                    s2   t ƒ jˆ ˆŽ ‡ ‡fdd„| jD ƒ| _tƒ | _d S )Nc                    s   g | ]}|ˆ ˆŽ‘qS © r   )Ú.0Zstorage_class©ÚargsÚkwargsr   úL/tmp/pip-unpacked-wheel-dv63caxw/django/contrib/messages/storage/fallback.pyÚ
<listcomp>   s   ÿz,FallbackStorage.__init__.<locals>.<listcomp>)ÚsuperÚ__init__Ústorage_classesÚstoragesÚsetÚ_used_storages)Úselfr	   r
   ©Ú	__class__r   r   r      s
    ÿzFallbackStorage.__init__c                 O   sR   g }| j D ]>}| ¡ \}}|dkr& qJ|r6| j |¡ | |¡ |r
 qJq
||fS )zJ
        Get a single list of messages from all storage backends.
        N)r   Ú_getr   ÚaddÚextend)r   r	   r
   Zall_messagesÚstorageÚmessagesZall_retrievedr   r   r   r      s    

zFallbackStorage._getc                 O   sH   | j D ]<}|r |j||dd�}q|| jkr| g |¡ | j |¡ q|S )zÎ
        Store the messages and return any unstored messages after trying all
        backends.

        For each storage backend, any messages not stored are passed on to the
        next backend.
        F)Zremove_oldest)r   Ú_storer   Úremove)r   r   Úresponser	   r
   r   r   r   r   r   &   s    

zFallbackStorage._store)Ú__name__Ú
__module__Ú__qualname__Ú__doc__r   r   r   r   r   r   Ú__classcell__r   r   r   r   r      s
   r   N)Z$django.contrib.messages.storage.baser   Z&django.contrib.messages.storage.cookier   Z'django.contrib.messages.storage.sessionr   r   r   r   r   r   Ú<module>   s   