gnucash_python/gnc_tree_view_account_gi.py at master · davidjo/gnucash_python

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# the issue with crashes has been resolved as using transfer full instead

# of transfer none for the returned Account objects or list of Account objects

# using transfer full Im assuming that the py-gobject wrapping done in

# do_(g/s)et_selected_accounts of the swig account objects is releasing the

# underlying account gobject when the py-gobject wrapper is freed

# I suppose one solution would be to start with py-gobject wrapped accounts

# in the report options setup itself - and only convert to swig wrap

# when rendering report

import sys

import types

import gobject

import ctypes

import pdb

import gc

import sw_app_utils

import glib_ctypes

import gnome_utils_ctypes

import swighelpers

#import qof_ctypes

import gnucash

import gnucash.gnucash_core_c

from gnucash.gnucash_core_c import string_to_guid as gnucash_core_string_to_guid

#pdb.set_trace()

def string_to_new_guid (cls, str):

#pdb.set_trace()

guid = cls()

retval = gnucash_core_string_to_guid(str,guid.instance)

if retval:

return guid

else:

raise Exception("Unable to convert string to GUID")

gnucash.GUID.string_to_guid = classmethod(string_to_new_guid)

from pygobjectcapi import PyGObjectCAPI

#from pygobjectcapi_gi import PyGObjectCAPI

# call like this:

# Cgobject = PyGObjectCAPI()

# Cgobject.to_object(memory_address)

# to get memory address from a gobject:

# address = hash(obj)

#pdb.set_trace()

Cgobject = PyGObjectCAPI()

NUM_ACCOUNT_TYPES = gnucash.gnucash_core_c.NUM_ACCOUNT_TYPES

class AccountOpaque(ctypes.Structure):

pass

gboolean = ctypes.c_int

class AccountViewInfo(ctypes.Structure):

pass

AccountViewInfo._fields_ = [

('include_type', gboolean*NUM_ACCOUNT_TYPES),

('show_hidden', gboolean),

]

AccountViewInfoPtr = ctypes.POINTER(AccountViewInfo)

# check for introspection

# if so add current path to girepository paths

import os

# this is only for testing

if __name__ == '__main__':

try:

from gi.repository import GIRepository

except ImportError:

pass

else:

#pdb.set_trace()

rep = GIRepository.Repository.get_default()

addrep = os.path.join(sys.path[0],"girepository")

rep.prepend_search_path(addrep)

print("junk")

# new feature - we apparently have no sys.argv

# - fake up a null entry

sys.argv = [ 'gnucash' ]

# be careful - if use wrong shared library can end up with

# weird errors eg not a subclass of GObject

#pdb.set_trace()

# so we can load these at this point

# (this probably will define GncTreeViewAccount, GncTreeView GTypes)

try:

import gi

# so we have big problems with circular references

# if use full Qof definition instant crash on import of GncTreeViewAccount here

# bootstrap version seems to work

#gi.require_version('GncTreeView', '0.1')

#gi.require_version('GncAccount', '0.1')

#gi.require_version('QofIdType', '0.1')

#gi.require_version('Qof', '0.1')

#from gi.repository import GncTreeView

#from gi.repository import QofIdType

#from gi.repository import Qof

#from gi.repository import GncAccount

gi.require_version('GncTreeViewAccount', '0.1')

from gi.repository import GncTreeViewAccount

#from gi.repository import QofBook

#from gi.repository import GLib

except Exception as errexc:

pdb.set_trace()

print("junk")

# so we have to use the following to create new GncTreeViewAccount objects

# but we do not get access to the additional functions the class defines

# only get access to the functions we have mapped for the parent classe(s)

# looks as though we need to add functions to the python side

#pdb.set_trace()

def new_with_root (root, show_root):

pdb.set_trace()

#newaccview = GncTreeViewAccountPython.new_with_root(root, show_root)

newaccview = GncTreeViewAccount.TreeViewAccount.new_with_root(root, show_root)

WrapTreeViewAccount(newaccview)

return newaccview

def new (show_root):

#pdb.set_trace()

#newaccview = GncTreeViewAccount.TreeViewAccount.new(show_root)

newaccview = GncTreeViewAccountPython.new(show_root)

WrapTreeViewAccount(newaccview)

return newaccview

# lets try a python subclass

# - no such luck - apparently the C constructors cannot be used to

# create subclasses (according to error message)

# and the following doesnt work - the class type returned from

# the new methods is the base class (GncTreeViewAccountPython.new)

# not the subclass

class GncTreeViewAccountPython(GncTreeViewAccount.TreeViewAccount):

def __init__ (self):

super(GncTreeViewAccountPython,self).__init__()

@classmethod

def new_with_root (cls, root, show_root):

newobj = GncTreeViewAccount.TreeViewAccount.new_with_root(root, show_root)

return newobj

@classmethod

def new (cls, show_root):

newobj = GncTreeViewAccount.TreeViewAccount.new(show_root)

return newobj

# lets go with a wrap

# well thats not going to work we need a widget object

# I guess we will just have to dynamically extend

# the issue is we need to replace some routines for argument

# fixing

# lets rename the routines with do_ as though a subclass virtual function

def WrapTreeViewAccount (newaccview):

#for gtyp in gobject.type_children(gobject.type_from_name('GObject')):

# print("GType:",gtyp, file=sys.stderr)

#for gtyp in gobject.type_children(gobject.type_from_name('QofInstance')):

# print("QofInstance GType:",gtyp, file=sys.stderr)

# can we add an instance variable - yes but not useful!!

#pdb.set_trace()

#newaccview.accdict = {}

# we dont really need to map these - we just call the base GObject function

newaccview.do_get_headers_visible = types.MethodType(do_get_headers_visible, newaccview)

newaccview.do_set_headers_visible = types.MethodType(do_set_headers_visible, newaccview)

newaccview.do_get_selection = types.MethodType(do_get_selection, newaccview)

newaccview.do_set_selection = types.MethodType(do_set_selection, newaccview)

newaccview.do_get_view_info = types.MethodType(do_get_view_info, newaccview)

newaccview.do_set_view_info = types.MethodType(do_set_view_info, newaccview)

newaccview.do_get_cursor_account = types.MethodType(do_get_cursor_account, newaccview)

newaccview.do_select_subaccounts = types.MethodType(do_select_subaccounts, newaccview)

newaccview.do_set_selected_accounts = types.MethodType(do_set_selected_accounts, newaccview)

newaccview.do_get_selected_accounts = types.MethodType(do_get_selected_accounts, newaccview)

newaccview.do_get_selected_account = types.MethodType(do_get_selected_account, newaccview)

if True:

# these are simple call maps

# we could just use these directly

def do_set_headers_visible (self, make_visible):

#pdb.set_trace()

self.set_headers_visible(make_visible)

def do_get_headers_visible (self):

pdb.set_trace()

return self.get_headers_visible()

def do_get_selection (self):

#pdb.set_trace()

slctn = self.get_selection()

return slctn

def do_set_selection (self, slctn):

# not used yet

pdb.set_trace()

self.set_selection(slctn)

# these functions need some emulation/type mapping

def do_get_view_info (self):

#pdb.set_trace()

#vwinfo = AccountViewInfo()

vwinfo = GncTreeViewAccount.AccountViewInfo()

print(str(vwinfo),"0x%x"%hash(vwinfo), file=sys.stderr)

self.get_view_info(vwinfo)

return vwinfo

def do_set_view_info (self, vwinfo):

#pdb.set_trace()

#print("set_view_info 1",self, file=sys.stderr)

#gc.collect()

print("0x%x"%hash(vwinfo), file=sys.stderr)

self.set_view_info(vwinfo)

#print("set_view_info 2", file=sys.stderr)

#gc.collect()

def do_get_cursor_account (self):

pdb.set_trace()

print("get_cursor_account", file=sys.stderr)

# yet again calling the direct introspection returns a py-gobject wrapped object

# which gets destroyed after this routine - and destroys the underlying Account object!!

# NO - this is all because I had set the return as transfer full

# - transfer none works!!

#trvwptr = hash(self)

#account_ptr = gnome_utils_ctypes.libgnc_gnomeutils.gnc_tree_view_account_get_cursor_account(trvwptr)

#if account_ptr == None:

# return None

accobj = self.get_cursor_account()

if accobj == None:

return None

account_ptr = hash(accobj)

## bugger - we now hit the big problem - how to convert raw C pointers to swig instances

## ah - got a way - stupid but what can we do

## get the account guid and look it up

#curbook = sw_app_utils.get_current_book()

#qof_ptr = ctypes.cast( account_ptr, ctypes.POINTER( qof_ctypes.QofInstanceOpaque ) )

#acc_guid = qof_ctypes.libgnc_qof.qof_instance_get_guid(qof_ptr)

#acc_guid_str = "".join([ "%02x"%x for x in acc_guid.contents.data ])

#acc_guid = gnucash.GUID.string_to_guid(acc_guid_str)

#account = gnucash.GUID.AccountLookup(acc_guid,curbook)

accinst = swighelpers.int_to_swig(account_ptr,"_p_Account")

account = gnucash.Account(instance=accinst)

return account

def do_select_subaccounts (self, account):

pdb.set_trace()

print("select_subaccounts", file=sys.stderr)

print(self, file=sys.stderr)

print(account, file=sys.stderr)

#account_ptr = ctypes.cast( account.instance.__int__(), ctypes.POINTER( AccountOpaque ) )

#trvwptr = hash(self)

#gnome_utils_ctypes.libgnc_gnomeutils.gnc_tree_view_account_select_subaccounts(trvwptr, account_ptr)

accgobj = Cgobject.to_object(account.instance.__int__())

self.select_subaccounts(accgobj)

def do_set_selected_accounts (self, account_list, show_last):

#pdb.set_trace()

print("set_selected_accounts 1",str(self), file=sys.stderr)

gc.collect()

# the issue seems to be the initial SWIG wrapped account list objects

# are being lost on 2nd option instantiation

# my current guess is that the py-gobject wrapping done here of the

# swig account objects is releasing the underlying account gobject

# when the py-gobject wrapper is freed

# so one option would be to just implement the ctypes version here

# the quark key for instance data is PyGObject::instance-data

# this seems to contain the type info as PyTypeObject

print("set_selected_accounts 1",str(account_list), file=sys.stderr)

if len(account_list) > 0:

# the issue is we need to map from the SWIG bindings to py-gobject bindings!!

# as it looks as though we need to store the py-gobject wraps

# lets store them as a dict (hash) - then can look them up

# in do_get_selected_accounts - rather than generating new swig wraps

# each time

acclst = []

for accobj in account_list:

acc_ptr = accobj.instance.__int__()

print("set_selected_accounts 1a",str(accobj),accobj.GetName(), file=sys.stderr)

print("set_selected_accounts 1a","%x"%acc_ptr, file=sys.stderr)

accgobj = Cgobject.to_object(acc_ptr)

# if accgobj == None: pdb.set_trace()

# print("set_selected_accounts 1a",str(accgobj), file=sys.stderr)

# print("set_selected_accounts 1a","%x"%hash(accgobj), file=sys.stderr)

# if not hash(accgobj) in self.accdict:

# self.accdict[hash(accgobj)] = [accobj, accgobj]

acclst.append(accgobj)

# # another option would be to create a GLib.List here

# # no such luck - it does not appear to be a true implementation

# # just a type definition

print("set_selected_accounts 2",str(acclst), file=sys.stderr)

self.set_selected_accounts(acclst, show_last)

## construct a g_list from list of accounts

#glst_ptr = None

#for accobj in account_list:

# acc_ptr = ctypes.cast( accobj.instance.__int__(), ctypes.POINTER( AccountOpaque ) )

# print("set_selected_accounts 1a",str(accobj),accobj.GetName(), file=sys.stderr)

# print("swig 0x%x"%accobj.instance.__int__(), file=sys.stderr)

# print("ctyps 0x%x"%ctypes.addressof(acc_ptr.contents), file=sys.stderr)

# glst_ptr = glib_ctypes.libglib.g_list_prepend(glst_ptr,acc_ptr)

# #self.accdict[accobj.instance.__int__()] = accobj

#glst_ptr = glib_ctypes.libglib.g_list_reverse(glst_ptr)

#print("0x%x"%ctypes.addressof(glst_ptr), file=sys.stderr)

##pdb.set_trace()

#trvwptr = hash(self)

#gnome_utils_ctypes.libgnc_gnomeutils.gnc_tree_view_account_set_selected_accounts(trvwptr, glst_ptr, show_last)

#print("glst ptr 0x%x"%ctypes.addressof(glst_ptr), file=sys.stderr)

#glib_ctypes.libglib.g_list_free(glst_ptr)

print("set_selected_accounts 3", file=sys.stderr)

gc.collect()

def do_get_selected_accounts (self):

#pdb.set_trace()

print("get_selected_accounts 1",str(self), file=sys.stderr)

gc.collect()

# annoying - using introspection here isnt going to work either

# - the gnucash C routine returns a list of py-gobject wrapped accounts

# which get destroyed when the py-gobject wrapper is destroyed

# NO - this is all because I had set the return as transfer full

# - transfer none works!!

# we cant use the do_set_selected_account SWIG wraps as we may

# select something else entirely

# this appears to be a plain python list of gobject wrapped account objects

glst = self.get_selected_accounts()

# this does not convert!!

#print("tree view glst"%str(glst), file=sys.stderr)

# we need a much better way of doing this

# need to be able to hook into the SWIG base functions using the

# ctypes integer pointer value

# - indexing through the list is slow as we scan the pointers each time

acc_lst = []

acctype = swighelpers.get_swig_type("_p_Account")

for gelm in glst:

print("gelm ",str(gelm), file=sys.stderr)

account_ptr = hash(gelm)

print("account_ptr 0x%x"%account_ptr, file=sys.stderr)

accinst = swighelpers.int_to_swig(account_ptr,acctype);

account = gnucash.Account(instance=accinst)

# #accinst = swighelpers.int_to_swig(account_ptr,"_p_Account")

acc_lst.append(account)

#print("get_selected_accounts 1a",str(acc_lst), file=sys.stderr)

#trvwptr = hash(self)

#print("tree view",self, file=sys.stderr)

#print("tree view 0x%x"%trvwptr, file=sys.stderr)

#glst_ptr = gnome_utils_ctypes.libgnc_gnomeutils.gnc_tree_view_account_get_selected_accounts(trvwptr)

#print(glst_ptr, file=sys.stderr)

#glst_ptr = ctypes.cast( glst_ptr, ctypes.POINTER( glib_ctypes.GListRaw ) )

#print(glst_ptr, file=sys.stderr)

#glst_len = glib_ctypes.libglib.g_list_length(glst_ptr)

#print(glst_ptr, file=sys.stderr)

#print(glst_len, file=sys.stderr)

##curbook = sw_app_utils.get_current_book()

## we need a much better way of doing this

## now using dict lookup

## need to be able to hook into the SWIG base functions using the

## ctypes integer pointer value

## - indexing through the list is slow as we scan the pointers each time

#acctype = swighelpers.get_swig_type("_p_Account")

#acc_lst = []

#glst_ptr_base = glst_ptr

#for irng in range(glst_len):

# #gelm1 = glib_ctypes.libglib.g_list_nth_data(glst_ptr_base,irng)

# gelm = glst_ptr.contents.data

# glst_ptr = glib_ctypes.g_list_next(glst_ptr)

# account_ptr = gelm

# print("account_ptr 0x%x"%account_ptr, file=sys.stderr)

# accinst = swighelpers.int_to_swig(account_ptr,acctype);

# #accinst = swighelpers.int_to_swig(account_ptr,"_p_Account")

# account = gnucash.Account(instance=accinst)

# #qof_ptr = ctypes.cast( account_ptr, ctypes.POINTER( qof_ctypes.QofInstanceOpaque ) )

# #acc_guid = qof_ctypes.libgnc_qof.qof_instance_get_guid(qof_ptr)

# #acc_guid_str = "".join([ "%02x"%x for x in acc_guid.contents.data ])

# #acc_guid = gnucash.GUID.string_to_guid(acc_guid_str)

# #account = gnucash.GUID.AccountLookup(acc_guid,curbook)

# acc_lst.append(account)

#pdb.set_trace()

return acc_lst

def do_get_selected_account (self):

#pdb.set_trace()

print("get_selected_account 1",str(self), file=sys.stderr)

gc.collect()

# annoying - using introspection here isnt going to work either

# - the gnucash C routine returns a list of py-gobject wrapped accounts

# which get destroyed when the py-gobject wrapper is destroyed

# NO - this is all because I had set the return as transfer full

# - transfer none works!!

# we cant use the do_set_selected_account SWIG wraps as we may

# select something else entirely

# this appears to be a plain python gobject wrapped account object

acc_gobj = self.get_selected_account()

# convert to SWIG wrapped object

account_ptr = hash(acc_gobj)

print("account_ptr 0x%x"%account_ptr, file=sys.stderr)

accinst = swighelpers.int_to_swig(account_ptr,"_p_Account");

account = gnucash.Account(instance=accinst)

return account

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