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RelationshipszGCollection object for |_Relationship| instances, having list semantics.�baseURI�strc s t t| ��� || _i | _d S �N)�superr �__init__�_baseURI�_target_parts_by_rId)�selfr �� __class__� �E/home/arjun/projects/env/lib/python3.10/site-packages/docx/opc/rel.pyr
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zRelationships.__init__F�reltype�target� str | Any�rId� is_external�bool�return�'_Relationship'c C s, t |||| j|�}|| |< |s|| j|< |S )z.Return a newly added |_Relationship| instance.)�
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found and |ValueError| if more than one matching relationship is found.)�_get_rel_of_typer )r r r r r r �part_with_reltype. s
z Relationships.part_with_reltypec C � | j S )z_Dict mapping rIds to target parts for all the internal relationships in the
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related_parts4 s zRelationships.related_partsc C s4 t �� }| �� D ]}|�|j|j|j|j� q|jS )zoSerialize this relationship collection into XML suitable for storage as a
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}|||||�r| S qdS )zuReturn relationship of matching `reltype`, `target`, and `is_external` from
collection, or None if not found.c S s> | j |krdS | j|krdS | jr| jn| j}||kr dS dS )NFT)r r r" r )r r r r �
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�zRelationships._get_matchingc sV � fdd�| � � D �}t|�dkrd}t|� ��t|�dkr'd}t|� ��|d S )z�Return single relationship of type `reltype` from the collection.
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more than one matching relationship is found.
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<listcomp>\ s z2Relationships._get_rel_of_type.<locals>.<listcomp>r z*no relationship of type '%s' in collection� z1multiple relationships of type '%s' in collection)r* �len�KeyError�
ValueError)r r �matching�tmplr r0 r r$ V s z Relationships._get_rel_of_typec C s4 t dt| �d �D ]}d| }|| vr| S q dS )z�Next available rId in collection, starting from 'rId1' and making use of any
gaps in numbering, e.g. 'rId2' for rIds ['rId1', 'rId3'].r3 � zrId%dN)�ranger4 )r �n�
rId_candidater r r r e s ��zRelationships._next_rId)r r �F)
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� Z S )r z&Value object for relationship to part.Fr r c s4 t t| ��� || _|| _|| _|| _t|�| _d S r ) r
r r �_rId�_reltype�_targetr r � _is_external)r r r r r �externalr r r r r s z_Relationship.__init__c C r& r )rG r' r r r r z � z_Relationship.is_externalc C r& r )rE r' r r r r ~ rI z_Relationship.reltypec C r& r )rD r' r r r r � rI z_Relationship.rIdc C s | j rtd��| jS )NzOtarget_part property on _Relationship is undefined when target mode is External)rG r6 rF r' r r r r � s
�z_Relationship.target_partr c C s | j r| jS | jj�| j�S r )rG rF �partname� relative_refr r' r r r r" � s z_Relationship.target_refr= )r r )r r ) r> r? r@ rA r rB r r r r r" rC r r r r r o s
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