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/*
* SPDX-FileCopyrightText: All Contributors to the PyTango project
*
* SPDX-License-Identifier: LGPL-3.0-or-later
*/
#pragma once
#include <map>
#include "defs.h"
/// Tango expects an object for callbacks derived from Tango::CallBack.
/// For read_attribute_asynch, write_attribute_asynch, the callback object
/// should be available until the callback is run. Then it can disappear.
/// Also if we forget about a DeviceProxy we don't need the callback anymore.
/// For event subscription however, the requirements are different. The C++
/// callback can be called way after the original DeviceProxy has disappered.
/// So for this case, the callback should live forever. As we don't want it,
/// we implemented the deletion of the callback in the DeviceProxy destructor
/// itself, after performing an unsubscribe.
/// @todo this is for cmd_ended, attr_read and attr_written. push_event are not done!
class PyCallBackAutoDie : public Tango::CallBack, public bopy::wrapper<Tango::CallBack>
{
public:
PyCallBackAutoDie() :
m_self(0),
m_weak_parent(0),
m_extract_as(PyTango::ExtractAsNumpy)
{
}
virtual ~PyCallBackAutoDie();
//! It is the PyCallBackAutoDie object itself, as seen from python
PyObject *m_self;
//! The object that will call this callback, so we can
//! monitor if it disappears, we are not needed anymore.
PyObject *m_weak_parent;
PyTango::ExtractAs m_extract_as;
static std::map<PyObject *, PyObject *> s_weak2ob;
static bopy::object py_on_callback_parent_fades;
static void on_callback_parent_fades(PyObject *weakobj);
static void init();
void set_autokill_references(bopy::object &py_self, bopy::object &py_parent);
void unset_autokill_references();
void set_extract_as(PyTango::ExtractAs extract_as)
{
this->m_extract_as = extract_as;
}
bopy::object get_override(const char *name)
{
return bopy::wrapper<Tango::CallBack>::get_override(name);
}
virtual void cmd_ended(Tango::CmdDoneEvent *ev);
virtual void attr_read(Tango::AttrReadEvent *ev);
virtual void attr_written(Tango::AttrWrittenEvent *ev);
// virtual void push_event(Tango::EventData *ev);
// virtual void push_event(Tango::AttrConfEventData *ev);
// virtual void push_event(Tango::DataReadyEventData *ev);
};
class PyCallBackPushEvent : public Tango::CallBack, public bopy::wrapper<Tango::CallBack>
{
public:
PyCallBackPushEvent() :
m_weak_device(0),
m_extract_as(PyTango::ExtractAsNumpy)
{
}
virtual ~PyCallBackPushEvent();
//! The object that will call this callback (DeviceProxy), so we can
//! monitor if it disappears, we are not needed anymore.
PyObject *m_weak_device;
PyTango::ExtractAs m_extract_as;
void set_device(bopy::object &py_device);
void set_extract_as(PyTango::ExtractAs extract_as)
{
this->m_extract_as = extract_as;
}
bopy::object get_override(const char *name);
// virtual void cmd_ended(Tango::CmdDoneEvent * ev);
// virtual void attr_read(Tango::AttrReadEvent *ev);
// virtual void attr_written(Tango::AttrWrittenEvent *ev);
virtual void push_event(Tango::EventData *ev);
virtual void push_event(Tango::AttrConfEventData *ev);
virtual void push_event(Tango::DataReadyEventData *ev);
virtual void push_event(Tango::PipeEventData *ev);
virtual void push_event(Tango::DevIntrChangeEventData *ev);
static void
fill_py_event(Tango::EventData *ev, bopy::object &py_ev, bopy::object py_device, PyTango::ExtractAs extract_as);
static void fill_py_event(Tango::AttrConfEventData *ev,
bopy::object &py_ev,
bopy::object py_device,
PyTango::ExtractAs extract_as);
static void fill_py_event(Tango::DataReadyEventData *ev,
bopy::object &py_ev,
bopy::object py_device,
PyTango::ExtractAs extract_as);
static void fill_py_event(Tango::PipeEventData *ev,
bopy::object &py_ev,
bopy::object py_device,
PyTango::ExtractAs extract_as);
static void fill_py_event(Tango::DevIntrChangeEventData *ev,
bopy::object &py_ev,
bopy::object py_device,
PyTango::ExtractAs extract_as);
};
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