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3** Copyright (C) 2015 The Qt Company Ltd and/or its subsidiary(-ies).
4** Contact: http://www.qt-project.org/legal
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32****************************************************************************/
33
34//
35// W A R N I N G
36// -------------
37//
38// This file is not part of the Qt API. It exists purely as an
39// implementation detail. This header file may change from version to
40// version without notice, or even be removed.
41//
42// We mean it.
43//
44
45#ifndef GCONFLAYER_P_H
46#define GCONFLAYER_P_H
47
48#if !defined(QT_NO_GCONFLAYER)
49
50#include <qvaluespacepublisher.h>
51
52#include "gconfitem_p.h"
53#include "qvaluespace_p.h"
54
55#include <QtCore/qmutex.h>
56#include <QtCore/qset.h>
57
58QT_BEGIN_NAMESPACE
59
60class GConfLayer : public QAbstractValueSpaceLayer
61{
62 Q_OBJECT
63
64public:
65 GConfLayer();
66 virtual ~GConfLayer();
67
68 static GConfLayer *instance();
69
70protected:
71 bool value(Handle handle, QVariant *data);
72 bool value(Handle handle, const QString &subPath, QVariant *data);
73 void removeHandle(Handle handle);
74 void setProperty(Handle handle, Properties properties);
75 Handle item(Handle parent, const QString &subPath);
76 QSet<QString> children(Handle handle);
77 QUuid id();
78 QValueSpace::LayerOptions layerOptions() const;
79
80 // QValueSpaceSubscriber functions
81 bool notifyInterest(Handle handle, bool interested);
82 bool supportsInterestNotification() const;
83
84 // QValueSpacePublisher functions
85 void addWatch(QValueSpacePublisher *creator, Handle handle);
86 bool removeSubTree(QValueSpacePublisher *creator, Handle handle);
87 void removeWatches(QValueSpacePublisher *creator, Handle parent);
88 bool removeValue(QValueSpacePublisher *creator, Handle handle, const QString &subPath);
89 bool setValue(QValueSpacePublisher *creator, Handle handle, const QString &subPath, const QVariant &value);
90 void sync();
91
92private Q_SLOTS:
93 void notifyChanged(const QString &key, const QVariant &value);
94
95private:
96 struct GConfHandle
97 {
98 GConfHandle(const QString &p)
99 : path(p), refCount(1)
100 {
101 }
102
103 QString path;
104 unsigned int refCount;
105 };
106
107 QHash<QString, GConfHandle *> m_handles;
108
109 GConfHandle *gConfHandle(Handle handle)
110 {
111 if (handle == InvalidHandle)
112 return 0;
113
114 GConfHandle *h = reinterpret_cast<GConfHandle *>(handle);
115 if (m_handles.values().contains(h))
116 return h;
117
118 return 0;
119 }
120
121 //private methods not locking a mutex
122 bool getValue(Handle handle, const QString &subPath, QVariant *data);
123 void doRemoveHandle(Handle handle);
124 Handle getItem(Handle parent, const QString &subPath);
125
126private:
127 QMap<QString, GConfItem *> m_monitoringItems;
128 QMutex m_mutex;
129 QSet<GConfHandle *> m_monitoringHandles;
130};
131
132QT_END_NAMESPACE
133
134#endif // QT_NO_GCONFLAYER
135
136#endif //GCONFLAYER_P_H
137

source code of qtsystems/src/publishsubscribe/gconflayer_p.h