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pythonnet-rawsvnmig/pythonnet/src/runtime/eventbinding.cs at master · pythonnet/pythonnet-rawsvnmig · GitHub
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runtime
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eventbinding.cs
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runtime
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eventbinding.cs
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// ==========================================================================
// This software is subject to the provisions of the Zope Public License,
// Version 2.0 (ZPL). A copy of the ZPL should accompany this distribution.
// THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
// WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
// FOR A PARTICULAR PURPOSE.
// ==========================================================================
using
System
;
namespace
Python
.
Runtime
{
//========================================================================
// Implements a Python event binding type, similar to a method binding.
//========================================================================
internal
class
EventBinding
:
ExtensionType
{
EventObject
e
;
IntPtr
target
;
public
EventBinding
(
EventObject
e
,
IntPtr
target
)
:
base
(
)
{
Runtime
.
Incref
(
target
)
;
this
.
target
=
target
;
this
.
e
=
e
;
}
//====================================================================
// EventBinding += operator implementation.
//====================================================================
public
static
IntPtr
nb_inplace_add
(
IntPtr
ob
,
IntPtr
arg
)
{
EventBinding
self
=
(
EventBinding
)
GetManagedObject
(
ob
)
;
if
(
Runtime
.
PyCallable_Check
(
arg
)
<
1
)
{
Exceptions
.
SetError
(
Exceptions
.
TypeError
,
"event handlers must be callable"
)
;
return
IntPtr
.
Zero
;
}
if
(
!
self
.
e
.
AddEventHandler
(
self
.
target
,
arg
)
)
{
return
IntPtr
.
Zero
;
}
Runtime
.
Incref
(
self
.
pyHandle
)
;
return
self
.
pyHandle
;
}
//====================================================================
// EventBinding -= operator implementation.
//====================================================================
public
static
IntPtr
nb_inplace_subtract
(
IntPtr
ob
,
IntPtr
arg
)
{
EventBinding
self
=
(
EventBinding
)
GetManagedObject
(
ob
)
;
if
(
Runtime
.
PyCallable_Check
(
arg
)
<
1
)
{
Exceptions
.
SetError
(
Exceptions
.
TypeError
,
"invalid event handler"
)
;
return
IntPtr
.
Zero
;
}
if
(
!
self
.
e
.
RemoveEventHandler
(
self
.
target
,
arg
)
)
{
return
IntPtr
.
Zero
;
}
Runtime
.
Incref
(
self
.
pyHandle
)
;
return
self
.
pyHandle
;
}
//====================================================================
// EventBinding __hash__ implementation.
//====================================================================
public
static
IntPtr
tp_hash
(
IntPtr
ob
)
{
EventBinding
self
=
(
EventBinding
)
GetManagedObject
(
ob
)
;
long
x
=
0
;
long
y
=
0
;
if
(
self
.
target
!=
IntPtr
.
Zero
)
{
x
=
Runtime
.
PyObject_Hash
(
self
.
target
)
.
ToInt64
(
)
;
if
(
x
==
-
1
)
{
return
new
IntPtr
(
-
1
)
;
}
}
y
=
Runtime
.
PyObject_Hash
(
self
.
e
.
pyHandle
)
.
ToInt64
(
)
;
if
(
y
==
-
1
)
{
return
new
IntPtr
(
-
1
)
;
}
x
^=
y
;
if
(
x
==
-
1
)
{
x
=
-
1
;
}
return
new
IntPtr
(
x
)
;
}
//====================================================================
// EventBinding __repr__ implementation.
//====================================================================
public
static
IntPtr
tp_repr
(
IntPtr
ob
)
{
EventBinding
self
=
(
EventBinding
)
GetManagedObject
(
ob
)
;
string
type
=
(
self
.
target
==
IntPtr
.
Zero
)
?
"unbound"
:
"bound"
;
string
s
=
String
.
Format
(
"<{0} event '{1}'>"
,
type
,
self
.
e
.
name
)
;
return
Runtime
.
PyString_FromString
(
s
)
;
}
//====================================================================
// EventBinding dealloc implementation.
//====================================================================
public
static
new
void
tp_dealloc
(
IntPtr
ob
)
{
EventBinding
self
=
(
EventBinding
)
GetManagedObject
(
ob
)
;
Runtime
.
Decref
(
self
.
target
)
;
ExtensionType
.
FinalizeObject
(
self
)
;
}
}
}
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