1/*
2 This file is part of the KDE libraries
3 SPDX-FileCopyrightText: 1999 David Faure <faure@kde.org>
4 SPDX-FileCopyrightText: 1999 Waldo Bastian <bastian@kde.org>
5
6 SPDX-License-Identifier: LGPL-2.0-only
7*/
8
9#ifndef KDED_H
10#define KDED_H
11
12#include <QHash>
13#include <QObject>
14#include <QSet>
15#include <QString>
16#include <QTimer>
17
18#include <QDBusAbstractAdaptor>
19
20#include <KDEDModule>
21#include <ksycoca.h>
22
23class QDBusMessage;
24class QDBusServiceWatcher;
25class KPluginMetaData;
26class KDirWatch;
27
28class Kded : public QObject
29{
30 Q_OBJECT
31public:
32 Kded();
33 ~Kded() override;
34
35 static Kded *self()
36 {
37 return _self;
38 }
39 static void messageFilter(const QDBusMessage &);
40
41 void noDemandLoad(const QString &obj); // Don't load obj on demand
42
43 QStringList loadedModules();
44 bool unloadModule(const QString &obj);
45 // bool isWindowRegistered(qlonglong windowId) const;
46 /**
47 * Applications can register/unregister their windows with kded modules.
48 * This allows kpasswdserver and kcookiejar to delete authentication
49 * and cookies that are local to a particular window when closing it.
50 */
51 //@{
52 /**
53 * Register a window with KDED
54 */
55 void registerWindowId(qlonglong windowId, const QString &sender);
56 /**
57 * Unregister a window previously registered with KDED
58 */
59 void unregisterWindowId(qlonglong windowId, const QString &sender);
60 //@}
61 void recreate(bool initial);
62
63 //@{
64 /**
65 * Check if a module should be loaded on startup.
66 *
67 * @param module the name of the desktop file for the module, without the .desktop extension
68 * @return @c true if the module will be loaded at startup, @c false otherwise
69 */
70 bool isModuleAutoloaded(const QString &module) const;
71 //@}
72
73 //@{
74 /**
75 * Check if a module is supported on the current QPA
76 */
77 bool platformSupportsModule(const KPluginMetaData &module) const;
78 //@}
79
80 //@{
81 /**
82 * Check if a module should be loaded on demand
83 *
84 * @param module the name of the desktop file for the module, without the .desktop extension
85 * @return @c true if the module will be loaded when its D-Bus interface
86 * is requested, @c false otherwise
87 */
88 bool isModuleLoadedOnDemand(const QString &module) const;
89 //@}
90
91 /**
92 * Configure whether a module should be loaded on startup
93 *
94 * If a module is set to be auto-loaded, it will be loaded at the start of a KDE
95 * session. Depending on the phase it is set to load in, it may also be loaded
96 * when the first KDE application is run outside of a KDE session.
97 *
98 * @param module the name of the desktop file for the module, without the .desktop extension
99 * @param autoload if @c true, the module will be loaded at startup,
100 * otherwise it will not
101 */
102 void setModuleAutoloading(const QString &module, bool autoload);
103
104public Q_SLOTS:
105 KDEDModule *loadModule(const QString &obj, bool onDemand);
106
107 /**
108 * Loads / unloads modules according to config
109 */
110 void initModules();
111
112 /**
113 * Recreate the database file
114 */
115 void recreate();
116
117 /**
118 * Recreating finished
119 */
120 void recreateDone();
121
122 /**
123 * Collect all directories to watch
124 */
125 void updateDirWatch();
126
127 /**
128 * Update directories to watch
129 */
130 void updateResourceList();
131
132 /**
133 * An application unregistered itself from DBus
134 */
135 void slotApplicationRemoved(const QString &);
136
137protected Q_SLOTS:
138
139 /**
140 * @internal Triggers rebuilding
141 */
142 void dirDeleted(const QString &path);
143
144 /**
145 * @internal Triggers rebuilding
146 */
147 void update(const QString &dir);
148
149 void runDelayedCheck();
150
151protected:
152 /**
153 * Scans dir for new files and new subdirectories.
154 */
155 void readDirectory(const QString &dir);
156 /**
157 * Check if a module should be loaded on demand
158 *
159 * @param module a service description for the module
160 * @return @c true if the module will be loaded when its D-Bus interface
161 * is requested, @c false otherwise
162 */
163 bool isModuleLoadedOnDemand(const KPluginMetaData &module) const;
164
165 /**
166 * Check if a module should be loaded on startup.
167 *
168 * @param module a service description for the module
169 * @return @c true if the module will be loaded at startup, @c false otherwise
170 */
171 bool isModuleAutoloaded(const KPluginMetaData &module) const;
172
173 KDEDModule *loadModule(const KPluginMetaData &module, bool onDemand);
174
175 QList<KPluginMetaData> availableModules() const;
176 /**
177 * Pointer to the dirwatch class which tells us, when some directories
178 * changed.
179 * Slower polling for remote file systems is now done in KDirWatch (JW).
180 */
181 KDirWatch *m_pDirWatch = nullptr;
182
183 /**
184 * When a desktop file is updated, a timer is started (5 sec)
185 * before rebuilding the binary - so that multiple updates result
186 * in only one rebuilding.
187 */
188 QTimer *m_pTimer;
189
190 QHash<QString, KDEDModule *> m_modules;
191 // QHash<QString,KLibrary *> m_libs;
192 QHash<QString, QObject *> m_dontLoad;
193
194 // window id tracking, with a QDBusServiceWatcher to remove them as needed
195 QDBusServiceWatcher *m_serviceWatcher;
196 QHash<QString, QList<qlonglong>> m_windowIdList;
197 QSet<long> m_globalWindowIdList;
198
199 QStringList m_allResourceDirs;
200 bool m_needDelayedCheck;
201
202 static Kded *_self;
203};
204
205class KUpdateD : public QObject
206{
207 Q_OBJECT
208public:
209 KUpdateD();
210 ~KUpdateD() override;
211
212public Q_SLOTS:
213 void runKonfUpdate();
214 void slotNewUpdateFile(const QString &);
215
216private:
217 /**
218 * Pointer to the dirwatch class which tells us, when some directories
219 * changed.
220 * Slower polling for remote file systems is now done in KDirWatch (JW).
221 */
222 KDirWatch *m_pDirWatch = nullptr;
223
224 /**
225 * When a desktop file is updated, a timer is started (5 sec)
226 * before rebuilding the binary - so that multiple updates result
227 * in only one rebuilding.
228 */
229 QTimer *m_pTimer;
230};
231
232#endif
233

source code of kded/src/kded.h