File indexing completed on 2024-05-19 05:21:25

 /*
   This file is part of the KDE Kontact Plugin Interface Library.
 
   SPDX-FileCopyrightText: 2003, 2008 David Faure <faure@kde.org>
 
   SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 #pragma once
 
 #include "kontactinterface_export.h"
 #include "plugin.h"
 #include <memory>
 class QCommandLineParser;
 
 namespace KontactInterface
 {
 /**
  * D-Bus Object that has the name of the standalone application (e.g. "kmail")
  * and implements newInstance() so that running the separate application does
  * the right thing when kontact is running.
  * By default this means simply bringing the main window to the front,
  * but newInstance can be reimplemented.
  */
 class KONTACTINTERFACE_EXPORT UniqueAppHandler : public QObject
 {
     Q_OBJECT
     // We implement the PIMUniqueApplication interface
     Q_CLASSINFO("D-Bus Interface", "org.kde.PIMUniqueApplication")
 
 public:
     explicit UniqueAppHandler(Plugin *plugin);
     ~UniqueAppHandler() override;
 
     /// This must be reimplemented so that app-specific command line options can be parsed
     virtual void loadCommandLineOptions(QCommandLineParser *parser) = 0;
 
     [[nodiscard]] Plugin *plugin() const;
 
     /**
       Sets the main QWidget @p widget associated with this application.
       @param widget the QWidget to set as main
     */
     static void setMainWidget(QWidget *widget);
 
     /**
       Returns the main widget, which will zero if setMainWidget() has not be called yet.
       @since 4.6
     */
     [[nodiscard]] QWidget *mainWidget();
 
 public Q_SLOTS: // DBUS methods
     int newInstance(const QByteArray &asn_id, const QStringList &args, const QString &workingDirectory);
     bool load();
 
 protected:
     virtual int activate(const QStringList &args, const QString &workingDirectory);
 
 private:
     class UniqueAppHandlerPrivate;
     std::unique_ptr<UniqueAppHandlerPrivate> const d;
 };
 
 /// Base class for UniqueAppHandler
 class UniqueAppHandlerFactoryBase
 {
 public:
     virtual ~UniqueAppHandlerFactoryBase() = default;
     virtual UniqueAppHandler *createHandler(Plugin *) = 0;
 };
 
 /**
  * Used by UniqueAppWatcher below, to create the above UniqueAppHandler object
  * when necessary.
  * The template argument is the UniqueAppHandler-derived class.
  * This allows to remove the need to subclass UniqueAppWatcher.
  */
 template<class T>
 class UniqueAppHandlerFactory : public UniqueAppHandlerFactoryBase
 {
 public:
     UniqueAppHandler *createHandler(Plugin *plugin) override
     {
         plugin->registerClient();
         return new T(plugin);
     }
 };
 
 /**
  * If the standalone application is running by itself, we need to watch
  * for when the user closes it, and activate the uniqueapphandler then.
  * This prevents, on purpose, that the standalone app can be restarted.
  * Kontact takes over from there.
  *
  */
 class KONTACTINTERFACE_EXPORT UniqueAppWatcher : public QObject
 {
     Q_OBJECT
 
 public:
     /**
      * Create an instance of UniqueAppWatcher, which does everything necessary
      * for the "unique application" behavior: create the UniqueAppHandler as soon
      * as possible, i.e. either right now or when the standalone app is closed.
      *
      * @param factory templatized factory to create the handler. Example:
      * ...   Note that the watcher takes ownership of the factory.
      * @param plugin is the plugin application
      */
     UniqueAppWatcher(UniqueAppHandlerFactoryBase *factory, Plugin *plugin);
 
     ~UniqueAppWatcher() override;
 
     bool isRunningStandalone() const;
 
 private Q_SLOTS:
     KONTACTINTERFACE_NO_EXPORT void slotApplicationRemoved(const QString &name, const QString &oldOwner, const QString &newOwner);
 
 private:
     class UniqueAppWatcherPrivate;
     std::unique_ptr<UniqueAppWatcherPrivate> const d;
 };
 
 } // namespace