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'''
Events handling
---------------

Catching click events and plugging a callback
'''

from __future__ import print_function

from __future__ import absolute_import
import anatomist.direct.api as anatomist
from soma import aims

a = anatomist.Anatomist()

# definig a custom event handler in python:


def clickHandler(eventName, params):
    print('click event: ', eventName)
    print('LinkedCursor event contents:', list(params.keys()))
    pos = params['position']
    print('pos:', pos)
    win = params['window']
    print('window:', win)


# register the function on the cursor notifier of anatomist. It will be
# called when the user click on a window
a.onCursorNotifier.add(clickHandler)


# definig a custom event in python
class TotoEvent (anatomist.cpp.OutputEvent):

    def __init__(self):
        # we can't make a custom Object yet...
        anatomist.cpp.OutputEvent.__init__(self, 'Toto',
                                           {}, 1)


ev = TotoEvent()
ev.send()

# ...
# wen you're done
# you can remove the handler
# a.onCursorNotifier.remove(clickHandler)