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
|
/**
Copyright (C) 2008-2009 Free Software Foundation, Inc.
By: Richard Frith-Macdonald <richard@brainstorm.co.uk>
This file is part of the GNUstep Base Library.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 31 Milk Street #960789 Boston, MA 02196 USA.
$Date: 2009-02-23 20:42:32 +0000 (Mon, 23 Feb 2009) $ $Revision: 27962 $
*/
#import "common.h"
#import "GSRunLoopWatcher.h"
#import "Foundation/NSException.h"
#import "Foundation/NSPort.h"
@implementation GSRunLoopWatcher
- (void) dealloc
{
[super dealloc];
}
- (id) initWithType: (RunLoopEventType)aType
receiver: (id)anObj
data: (void*)item
{
_invalidated = NO;
receiver = anObj;
data = item;
switch (aType)
{
#if defined(_WIN32)
case ET_HANDLE: type = aType; break;
case ET_WINMSG: type = aType; break;
#else
case ET_EDESC: type = aType; break;
case ET_RDESC: type = aType; break;
case ET_WDESC: type = aType; break;
#endif
case ET_RPORT: type = aType; break;
case ET_TRIGGER: type = aType; break;
default:
DESTROY(self);
[NSException raise: NSInvalidArgumentException
format: @"NSRunLoop - unknown event type"];
}
if ([anObj respondsToSelector: @selector(runLoopShouldBlock:)])
{
checkBlocking = YES;
}
if (![anObj respondsToSelector: @selector(receivedEvent:type:extra:forMode:)])
{
DESTROY(self);
[NSException raise: NSInvalidArgumentException
format: @"RunLoop listener has no event handling method"];
}
return self;
}
- (BOOL) runLoopShouldBlock: (BOOL*)trigger
{
if (checkBlocking == YES)
{
BOOL result = [(id)receiver runLoopShouldBlock: trigger];
return result;
}
else if (type == ET_TRIGGER)
{
*trigger = YES;
return NO; // By default triggers may fire immediately
}
*trigger = YES;
return YES; // By default we must wait for input sources
}
@end
|
