.. _secbrows:

SectionBrowser
--------------



.. class:: SectionBrowser


    Syntax:
        ``sb = h.SectionBrowser()``

        ``sb = h.SectionBrowser(SectionList)``


    Description:
        Class that makes a visible list of all section names. 
        If the optional SectionList arg is present then only those 
        section names are shown in the browser. 

    Example:

        .. code-block::
            python

            from neuron import h, gui
            soma = h.Section(name='soma')
            dend = h.Section(name='dend')
            sl = h.SectionList([soma])  # only the soma will be shown
            sb = h.SectionBrowser(sl)
            
    
    .. image:: ../../images/secbrows-sectionList.png
        :align: center

    .. seealso::
        :class:`SectionList`, :ref:`stdrun_shape`

         

----



.. method:: SectionBrowser.select


    Syntax:
        ``.select(sec=section)``


    Description:
        specified section is highlighted. 

    Example:

        .. code-block::
            python

            from neuron import h, gui
            soma = h.Section(name='soma')
            axon = h.Section(name='axon')

            sb = h.SectionBrowser()
            sb.select(sec=axon)        

    .. image:: ../../images/secbrows-select.png
        :align: center
----



.. method:: SectionBrowser.select_action


    Syntax:
        ``sb.select_action(python_func)``


    Description:
        A Python function is executed when an item is selected (single click or 
        dragging) by the mouse. Before execution, the selected section 
        is pushed. (and	popped after the function completes.)
        A Python function is executed in the object context in which \ ``select_action`` 
        registered it. 


    Example:

        .. code-block::
            python

            from neuron import h, gui
            soma = h.Section(name='soma')
            axon = h.Section(name='axon')

            def select(sec):
                print('select: {} {}'.format(sec, type(sec)))

            def accept(sec):
                print('accept: {}'.format(sec))

            sb = h.SectionBrowser()
            sb.select_action(select)
            sb.accept_action(accept)

    .. note::

        Python support for :meth:`select_action` was added in NEURON 7.5.
         

----



.. method:: SectionBrowser.accept_action


    Syntax:
        ``sb.accept_action(python_func)``


    Description:
        A Python function is executed when an item is accepted (double click) by 
        the mouse. Before execution, the selected section 
        is pushed. (and	popped after the function completes.) 
        A Python function is executed in the object context in which the  ``accept_action`` 
        registered it. 

             
    Example:

        .. code-block::
            python

            from neuron import h, gui
            soma = h.Section(name='soma')
            axon = h.Section(name='axon')

            def select(sec):
                print('select: {} {}'.format(sec, type(sec)))

            def accept(sec):
                print('accept: {}'.format(sec))

            sb = h.SectionBrowser()
            sb.select_action(select)
            sb.accept_action(accept)

    .. note::

        Python support for :meth:`accept_action` was added in NEURON 7.5.