summaryrefslogtreecommitdiffstats
path: root/kopete/protocols/jabber/libiris/cutestuff/util/safedelete.cpp
blob: 6bd012e92a0b5f82d08e1040c3bbff4c93df2e8c (plain)
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
#include"safedelete.h"

#include<qtimer.h>

//----------------------------------------------------------------------------
// SafeDelete
//----------------------------------------------------------------------------
SafeDelete::SafeDelete()
{
	lock = 0;
}

SafeDelete::~SafeDelete()
{
	if(lock)
		lock->dying();
}

void SafeDelete::deleteLater(QObject *o)
{
	if(!lock)
		deleteSingle(o);
	else
		list.append(o);
}

void SafeDelete::unlock()
{
	lock = 0;
	deleteAll();
}

void SafeDelete::deleteAll()
{
	if(list.isEmpty())
		return;

	QObjectListIt it(list);
	for(QObject *o; (o = it.current()); ++it)
		deleteSingle(o);
	list.clear();
}

void SafeDelete::deleteSingle(QObject *o)
{
#if QT_VERSION < 0x030000
	// roll our own QObject::deleteLater()
	SafeDeleteLater *sdl = SafeDeleteLater::ensureExists();
	sdl->deleteItLater(o);
#else
	o->deleteLater();
#endif
}

//----------------------------------------------------------------------------
// SafeDeleteLock
//----------------------------------------------------------------------------
SafeDeleteLock::SafeDeleteLock(SafeDelete *sd)
{
	own = false;
	if(!sd->lock) {
		_sd = sd;
		_sd->lock = this;
	}
	else
		_sd = 0;
}

SafeDeleteLock::~SafeDeleteLock()
{
	if(_sd) {
		_sd->unlock();
		if(own)
			delete _sd;
	}
}

void SafeDeleteLock::dying()
{
	_sd = new SafeDelete(*_sd);
	own = true;
}

//----------------------------------------------------------------------------
// SafeDeleteLater
//----------------------------------------------------------------------------
SafeDeleteLater *SafeDeleteLater::self = 0;

SafeDeleteLater *SafeDeleteLater::ensureExists()
{
	if(!self)
		new SafeDeleteLater();
	return self;
}

SafeDeleteLater::SafeDeleteLater()
{
	list.setAutoDelete(true);
	self = this;
	QTimer::singleShot(0, this, SLOT(explode()));
}

SafeDeleteLater::~SafeDeleteLater()
{
	list.clear();
	self = 0;
}

void SafeDeleteLater::deleteItLater(QObject *o)
{
	list.append(o);
}

void SafeDeleteLater::explode()
{
	delete this;
}

#include "safedelete.moc"