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Workaround added for strange Python 2.6 bug on recusive signal handling

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svn: r14007
This commit is contained in:
Doug Blank 2010-01-09 17:13:56 +00:00
parent 36fa65944d
commit 7dd624d657
1 changed files with 34 additions and 13 deletions
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47
src/Simple/_SimpleTable.py
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@ -32,6 +32,28 @@ import Errors
import config
import DateHandler
def on_table_click(obj, table):
"""
This is a workaround for a weird issue in Python. It occurs when a
click occurs faster than gramps can respond, and the
gobject.timeout_add ends up being called recursively. For some
reason some of the methods are removed from the Table object
making future calls invalid.
"""
if hasattr(table, "_callback_leftclick"):
return table.on_table_click(obj)
def on_table_doubleclick(obj, path, view_column, table):
"""
This is a workaround for a weird issue in Python. It occurs when a
double-click occurs faster than gramps can respond, and the
gobject.timeout_add ends up being called recursively. For some
reason some of the methods are removed from the Table object
making future calls invalid.
"""
if hasattr(table, "_callback_leftdouble"):
return table.on_table_doubleclick(obj, path, view_column)
class SimpleTable(object):
"""
Provide a simplified table creation interface.
@ -52,8 +74,8 @@ class SimpleTable(object):
self.__sort_col = None
self.__sort_reverse = False
self.__link_col = None
self.__callback_leftclick = None
self.__callback_leftdouble = None
self._callback_leftclick = None
self._callback_leftdouble = None
self.model_index_of_column = {}
def get_row_count(self):
@ -85,9 +107,9 @@ class SimpleTable(object):
Override (or add) a function for click/double-click
"""
if which == "leftclick":
self.__callback_leftclick = callback
self._callback_leftclick = callback
elif which == "leftdouble":
self.__callback_leftdouble = callback
self._callback_leftdouble = callback
def on_table_doubleclick(self, obj, path, view_column):
"""
@ -100,8 +122,8 @@ class SimpleTable(object):
if not node:
return
index = store.get_value(node, 0) # index
if self.__callback_leftdouble:
self.__callback_leftdouble(store.get_value(node, 1))
if self._callback_leftdouble:
self._callback_leftdouble(store.get_value(node, 1))
return True
elif self.__link[index]:
objclass, handle = self.__link[index]
@ -171,19 +193,18 @@ class SimpleTable(object):
if not node:
return
index = store.get_value(node, 0) # index
if self.__callback_leftclick:
self.__callback_leftclick(store.get_value(node, 1))
if self._callback_leftclick:
self._callback_leftclick(store.get_value(node, 1))
return True
elif self.__link[index]:
objclass, handle = self.__link[index]
if objclass == 'Person':
import gobject
person = self.access.dbase.get_person_from_handle(handle)
# If you emmit the signal here and it causes this table to be deleted,
# then you'll crash Python:
#self.simpledoc.doc.dbstate.change_active_person(person)
#self.simpledoc.doc.dbstate.set_active_person(handle)
# So, let's return from this, then change the active person:
gobject.timeout_add(100, self.simpledoc.doc.dbstate.change_active_person, person)
return gobject.timeout_add(100, self.simpledoc.doc.dbstate.set_active_person, handle)
return True
return False # didn't handle event
@ -375,8 +396,8 @@ class SimpleTable(object):
sort_index = 0
treeview = gtk.TreeView()
treeview.set_grid_lines(gtk.TREE_VIEW_GRID_LINES_BOTH)
treeview.connect('row-activated', self.on_table_doubleclick)
treeview.connect('cursor-changed', self.on_table_click)
treeview.connect('row-activated', on_table_doubleclick, self)
treeview.connect('cursor-changed', on_table_click, self)
renderer = gtk.CellRendererText()
types = [int] # index
cnt = 0