class PriorityDemo(GnlDemo):
    __name__ = "Priority Demo"
    __usage__ = '''%s''' % sys.argv[0]
    
    def gnl_magic(self, comp, args):

        self.testbin = PriorityTestBin()
        testop = gst.element_factory_make("gnloperation")
        testop.add(self.testbin)
        testop.set_property("start", 0)
        testop.set_property("duration", 5 * gst.SECOND)
        comp.add(testop)

        i = 0
        for name in ["source1", "source2", "source3"]:
            source = gst.element_factory_make("gnlsource", name)
            source.set_property("start", 0)
            source.set_property("duration", 5 * gst.SECOND)
            source.set_property("priority", i)
            i += 1
            comp.add(source)

if __name__ == '__main__':
    d = PriorityDemo()
    d.run()
    d.testbin.dump_pad_info()