diff options
| author | Tannin <Tannin@Serenity> | 2013-02-03 12:49:25 +0100 |
|---|---|---|
| committer | Tannin <Tannin@Serenity> | 2013-02-03 12:49:25 +0100 |
| commit | 981f8b3acf7e76f27c02f4ced80d55b424cc7497 (patch) | |
| tree | 0f504d99d1e5fe197258febff3c147d0725abda4 /src/singleinstance.h | |
initial commit to mercurial repository.
Corresponds to MO version 0.12.6
Diffstat (limited to 'src/singleinstance.h')
| -rw-r--r-- | src/singleinstance.h | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/src/singleinstance.h b/src/singleinstance.h new file mode 100644 index 00000000..cc95bf48 --- /dev/null +++ b/src/singleinstance.h @@ -0,0 +1,88 @@ +/* +Copyright (C) 2012 Sebastian Herbord. All rights reserved. + +This file is part of Mod Organizer. + +Mod Organizer is free software: you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation, either version 3 of the License, or +(at your option) any later version. + +Mod Organizer 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 General Public License for more details. + +You should have received a copy of the GNU General Public License +along with Mod Organizer. If not, see <http://www.gnu.org/licenses/>. +*/ + +#ifndef SINGLEINSTANCE_H
+#define SINGLEINSTANCE_H
+
+#include <QObject>
+#include <QSharedMemory>
+#include <QLocalServer>
+
+
+/**
+ * used to ensure only a single instance of Mod Organizer is started and to
+ * allow secondary instances to send messages to the primary (visible) one. This way,
+ * secondary instances can start a download in the primary one
+ **/
+class SingleInstance : public QObject
+{
+
+ Q_OBJECT
+
+public:
+
+ /**
+ * @brief constructor
+ *
+ * @param forcePrimary if true, this will be treated as the primary instance even
+ * if another instance is running. This is used after an update since
+ * the other instance is assumed to be in the process of quitting
+ * @param parent parent object
+ * @todo the forcePrimary parameter makes no sense. The second instance after an update
+ * needs to delete the files from before the update so the first instance needs to quit
+ * first anyway
+ **/
+ explicit SingleInstance(bool forcePrimary, QObject *parent = 0);
+
+ /**
+ * @return true if this is the primary instance (the one that gets to display a UI)
+ **/
+ bool primaryInstance() const { return m_PrimaryInstance; }
+
+ /**
+ * send a message to the primary instance. This can be used to transmit download urls
+ *
+ * @param message message to send
+ **/
+ void sendMessage(const QString &message);
+
+signals:
+
+ /**
+ * @brief emitted when a secondary instance has sent a message (to us)
+ *
+ * @param message the message we received
+ **/
+ void messageSent(const QString &message);
+
+public slots:
+
+private slots:
+
+ void receiveMessage();
+
+private:
+
+ bool m_PrimaryInstance;
+ QSharedMemory m_SharedMem;
+ QLocalServer m_Server;
+
+};
+
+#endif // SINGLEINSTANCE_H
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