forked from pythonnet/pythonnet
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy patheventbinding.cs
More file actions
132 lines (97 loc) · 4.5 KB
/
eventbinding.cs
File metadata and controls
132 lines (97 loc) · 4.5 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
// ==========================================================================
// 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);
}
}
}