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_signalhelper.cpython-36.pyc
3 ��<_r& � @ sj d dl Z ddlmZ de j ko(dk n r6dd� ZG dd � d e�ZG d d � d e�Zd d � Zdd� Z dS )� N� )�_gi� � c C s t | d�S )N�__call__)�hasattr)�fn� r �%/usr/lib64/python3.6/_signalhelper.py�callable s r c @ sj e Zd ZdZG dd� de�Zddd�Zddejdddddfdd �Z dd d �Z d d � Z ddd�Z dd� Z dS )�Signala� Object which gives a nice API for creating and binding signals. :param name: Name of signal or callable closure when used as a decorator. :type name: str or callable :param callable func: Callable closure method. :param GObject.SignalFlags flags: Flags specifying when to run closure. :param type return_type: Return type of the Signal. :param list arg_types: List of argument types specifying the signals function signature :param str doc: Documentation of signal object. :param callable accumulator: Accumulator method with the signature: func(ihint, return_accu, handler_return, accu_data) -> boolean :param object accu_data: User data passed to the accumulator. :Example: .. code-block:: python class Spam(GObject.Object): velocity = 0 @GObject.Signal def pushed(self): self.velocity += 1 @GObject.Signal(flags=GObject.SignalFlags.RUN_LAST) def pulled(self): self.velocity -= 1 stomped = GObject.Signal('stomped', arg_types=(int,)) @GObject.Signal def annotated_signal(self, a:int, b:str): "Python3 annotation support for parameter types. def on_pushed(obj): print(obj) spam = Spam() spam.pushed.connect(on_pushed) spam.pushed.emit() c @ sP e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd d � Z dd� Z dd� Z dS )zSignal.BoundSignalz� Temporary binding object which can be used for connecting signals without specifying the signal name string to connect. c O s t j| |�S )N)�str�__new__)�cls�name�args�kargsr r r r X s zSignal.BoundSignal.__new__c C s t j| � || _|| _d S )N)r �__init__�signal�gobj)�selfr r r r r r [ s zSignal.BoundSignal.__init__c C s d| S )NzBoundSignal("%s")r )r r r r �__repr__` s zSignal.BoundSignal.__repr__c O s | j j| jf|�|�S )zCall the signals closure.)r �funcr )r r r r r r r c s zSignal.BoundSignal.__call__c O s | j j| |f|�|�S )z^Same as GObject.Object.connect except there is no need to specify the signal name.)r �connect)r �callbackr r r r r r g s zSignal.BoundSignal.connectc O s | j j| d | |f|�|�S )a Same as GObject.Object.connect except there is no need to specify the signal name. In addition concats "::<detail>" to the signal name when connecting; for use with notifications like "notify" when a property changes. z::)r r )r r Zdetailr r r r r �connect_detailedl s z#Signal.BoundSignal.connect_detailedc C s | j j|� dS )z"Same as GObject.Object.disconnect.N)�instance� disconnect)r Z handler_idr r r r t s z Signal.BoundSignal.disconnectc O s | j jt| �f|�|�S )z[Same as GObject.Object.emit except there is no need to specify the signal name.)r �emitr )r r r r r r r x s zSignal.BoundSignal.emitN) �__name__� __module__� __qualname__�__doc__r r r r r r r r r r r r � BoundSignalS s r# � c O s t |�r|j}tj| |�S )N)r r r r )r r r r r r r r } s zSignal.__new__Nc C s� |r| r|j }nt|�r$|}|j }|r4| r4|j}tj| � |rX|pH| rXt|�\}}|d krft� }|| _|| _|| _ || _ || _|| _ || _ d S )N) r r r" r r �get_signal_annotations�tupler �flags� return_type� arg_types� accumulator� accu_data) r r r r' r( r) �docr* r+ r r r r � s& zSignal.__init__c C s |dkr | S | j | |�S )z:Returns a BoundSignal when accessed on an object instance.N)r# )r r �ownerr r r �__get__� s zSignal.__get__c O sd t |tj�r | j|f|�|� n@t| �r2t| �}n|j}t| �||| j| j| j | j | j | j d�S dS )zmAllows for instantiated Signals to be used as a decorator or calling of the underlying signal method.)r r r' r( r) r, r* r+ N) � isinstancer ZGObjectr r r �typer' r( r) r" r* r+ )r �objr r r r r r r � s zSignal.__call__c C s8 |dkr| j }t| �|| j| j| j| j| j| j| jd�S )z%Returns a renamed copy of the Signal.N)r r r' r( r) r, r* r+ ) r r0 r r' r( r) r" r* r+ )r ZnewNamer r r �copy� s z Signal.copyc C s | j | j| j| j| jfS )zKReturns a tuple of: (flags, return_type, arg_types, accumulator, accu_data))r' r( r) r* r+ )r r r r �get_signal_args� s zSignal.get_signal_args)r$ )N)N)r r r! r" r r# r r ZSIGNAL_RUN_FIRSTr r. r r2 r3 r r r r r ! s 1* r c @ s e Zd ZdZdd� ZdS )�SignalOverridea& Specialized sub-class of Signal which can be used as a decorator for overriding existing signals on GObjects. :Example: .. code-block:: python class MyWidget(Gtk.Widget): @GObject.SignalOverride def configure_event(self): pass c C s dS )z Returns the string 'override'.�overrider )r r r r r3 � s z SignalOverride.get_signal_argsN)r r r! r" r3 r r r r r4 � s r4 c sZ t � }d}t| d�rRddl}|j| �� t � fdd�� jD ��}d� jkrR� jd }||fS )a Attempt pulling python 3 function annotations off of 'func' for use as a signals type information. Returns an ordered nested tuple of (return_type, (arg_type1, arg_type2, ...)). If the given function does not have annotations then (None, tuple()) is returned. N�__annotations__r c 3 s" | ]}|� j kr� j | V qd S )N)� annotations)�.0�arg)�specr r � <genexpr>� s z)get_signal_annotations.<locals>.<genexpr>�return)r& r �inspectZgetfullargspecr r7 )r r) r( r= r )r: r r% � s r% c C s� | j jdi �}i }xn| j j� D ]`\}}t|t�r t|�}|sV|}|j|�}t| ||� ||krjtd| ��|||< |j � ||< q W || _ xF|j� D ]:\}}|j dk r�d|j dd� }t | |�s�t| ||j � q�W dS )z�Adds Signal instances on a GObject derived class into the '__gsignals__' dictionary to be picked up and registered as real GObject signals. � __gsignals__z(Signal "%s" has already been registered.NZdo_�-�_)�__dict__�get�itemsr/ r r r2 �setattr� ValueErrorr3 r> r �replacer )r ZgsignalsZ newsignalsr r Z signalNameZfuncNamer r r �install_signals� s& rG )r r )r r ) �sysr$ r � version_infor r r r4 r% rG r r r r �<module> s "
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