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pythonnet/Python.Runtime/eventbinding.cs at modernisation · Pixelbear/pythonnet · GitHub
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eventbinding.cs
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using
System
;
namespace
Python
.
Runtime
{
/// <summary>
/// Implements a Python event binding type, similar to a method binding.
/// </summary>
internal
class
EventBinding
:
ExtensionType
{
private
EventObject
e
;
private
IntPtr
target
;
public
EventBinding
(
EventObject
e
,
IntPtr
target
)
{
Runtime
.
XIncref
(
target
)
;
this
.
target
=
target
;
this
.
e
=
e
;
}
/// <summary>
/// EventBinding += operator implementation.
/// </summary>
public
static
IntPtr
nb_inplace_add
(
IntPtr
ob
,
IntPtr
arg
)
{
var
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
.
XIncref
(
self
.
pyHandle
)
;
return
self
.
pyHandle
;
}
/// <summary>
/// EventBinding -= operator implementation.
/// </summary>
public
static
IntPtr
nb_inplace_subtract
(
IntPtr
ob
,
IntPtr
arg
)
{
var
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
.
XIncref
(
self
.
pyHandle
)
;
return
self
.
pyHandle
;
}
/// <summary>
/// EventBinding __hash__ implementation.
/// </summary>
public
static
IntPtr
tp_hash
(
IntPtr
ob
)
{
var
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
)
;
}
/// <summary>
/// EventBinding __repr__ implementation.
/// </summary>
public
static
IntPtr
tp_repr
(
IntPtr
ob
)
{
var
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
)
;
}
/// <summary>
/// EventBinding dealloc implementation.
/// </summary>
public
new
static
void
tp_dealloc
(
IntPtr
ob
)
{
var
self
=
(
EventBinding
)
GetManagedObject
(
ob
)
;
Runtime
.
XDecref
(
self
.
target
)
;
ExtensionType
.
FinalizeObject
(
self
)
;
}
}
}
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