File indexing completed on 2024-04-14 03:54:34

 /*
     This file is part of the KDE project
     SPDX-FileCopyrightText: 1998, 1999 Torben Weis <weis@kde.org>
     SPDX-FileCopyrightText: 1999-2006 David Faure <faure@kde.org>
     SPDX-FileCopyrightText: 2022 Harald Sitter <sitter@kde.org>
 
     SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 #ifndef KSERVICE_H
 #define KSERVICE_H
 
 #include "kserviceaction.h"
 #include <QCoreApplication>
 #include <QStringList>
 #include <QVariant>
 #include <kserviceconversioncheck_p.h>
 #include <ksycocaentry.h>
 
 #include <optional>
 
 class QDataStream;
 class KDesktopFile;
 class QWidget;
 
 class KServicePrivate;
 
 /**
  * @class KService kservice.h <KService>
  *
  * Represents an installed application.
  *
  * To obtain a KService instance for a specific application you typically use serviceByDesktopName(), e.g.:
  *
  * @code
  * KService::Ptr service = KService::serviceByDesktopName("org.kde.kate");
  * @endcode
  *
  * Other typical usage would be in combination with KApplicationTrader to obtain e.g. the default application for a given file type.
  *
  * @see <a href="https://specifications.freedesktop.org/desktop-entry-spec/latest/">Desktop Entry Specification</a>
  */
 class KSERVICE_EXPORT KService : public KSycocaEntry
 {
 public:
     /**
      * A shared data pointer for KService.
      */
     typedef QExplicitlySharedDataPointer<KService> Ptr;
     /**
      * A list of shared data pointers for KService.
      */
     typedef QList<Ptr> List;
 
     /**
      * Construct a temporary service with a given name, exec-line and icon.
      * @param name the name of the service
      * @param exec the executable
      * @param icon the name of the icon
      */
     KService(const QString &name, const QString &exec, const QString &icon);
 
     /**
      * Construct a service and take all information from a .desktop file.
      *
      * @param fullpath Full path to the .desktop file.
      */
     explicit KService(const QString &fullpath);
 
     /**
      * Construct a service and take all information from a desktop file.
      * @param config the desktop file to read
      * @param optional relative path to store for findByName
      */
     explicit KService(const KDesktopFile *config, const QString &entryPath = QString());
 
     KService(const KService &other);
 
     ~KService() override;
 
     /**
      * Whether this service is an application
      * @return true if this service is an application, i.e. it has Type=Application in its
      * .desktop file and exec() will not be empty.
      */
     bool isApplication() const;
 
     /**
      * Returns the executable.
      * @return the command that the service executes,
      *         or QString() if not set
      */
     QString exec() const;
 
     /**
      * Returns the name of the icon.
      * @return the icon associated with the service,
      *         or QString() if not set
      */
     QString icon() const;
     /**
      * Checks whether the application should be run in a terminal.
      *
      * This corresponds to `Terminal=true` in the .desktop file.
      *
      * @return @c true if the application should be run in a terminal.
      */
     bool terminal() const;
 
     /**
      * Returns any options associated with the terminal the application
      * runs in, if it requires a terminal.
      *
      * The application must be a TTY-oriented program.
      * @return the terminal options,
      *         or QString() if not set
      */
     QString terminalOptions() const;
 
     /**
      * Returns @c true if the application indicates that it's preferred to run
      * on a discrete graphics card, otherwise return @c false.
      *
      * In releases older than 5.86, this method checked for the @c X-KDE-RunOnDiscreteGpu
      * key in the .desktop file represented by this service; starting from 5.86 this method
      * now also checks for @c PrefersNonDefaultGPU key (added to the Freedesktop.org desktop
      * entry spec in version 1.4 of the spec).
      *
      * @since 5.30
      */
     bool runOnDiscreteGpu() const;
 
     /**
      * @brief Checks whether the application needs to run under a different UID.
      * @return @c true if the application needs to run under a different UID.
      * @see username()
      */
     bool substituteUid() const;
     /**
      * Returns the user name if the application runs with a
      * different user id.
      * @return the username under which the service has to be run,
      *         or QString() if not set
      * @see substituteUid()
      */
     QString username() const;
 
     /**
      * Returns the filename of the desktop entry without any
      * extension, e.g. "org.kde.kate"
      * @return the name of the desktop entry without path or extension,
      *         or QString() if not set
      */
     QString desktopEntryName() const;
 
     /**
      * Returns the menu ID of the application desktop entry.
      * The menu ID is used to add or remove the entry to a menu.
      * @return the menu ID
      */
     QString menuId() const;
 
     /**
      * Returns a normalized ID suitable for storing in configuration files.
      * It will be based on the menu-id when available and otherwise falls
      * back to entryPath()
      * @return the storage ID
      */
     QString storageId() const;
 
     /**
      * @return the working directory to run the program in,
      *         or QString() if not set
      * @since 5.63
      */
     QString workingDirectory() const;
 
     /**
      * Returns the descriptive comment for the application, if there is one.
      * @return the descriptive comment for the application, or QString()
      *         if not set
      */
     QString comment() const;
 
     /**
      * Returns the generic name for the application, if there is one
      * (e.g. "Mail Client").
      * @return the generic name,
      *         or QString() if not set
      */
     QString genericName() const;
 
     /**
      * Returns the untranslated (US English) generic name
      * for the application, if there is one
      * (e.g. "Mail Client").
      * @return the generic name,
      *         or QString() if not set
      */
     QString untranslatedGenericName() const;
 
     /**
      * @return untranslated name for the given service
      *
      * @since 6.0
      */
     QString untranslatedName() const;
     /**
      * Returns a list of descriptive keywords for the application, if there are any.
      * @return the list of keywords
      */
     QStringList keywords() const;
 
     /**
      * Returns a list of VFolder categories.
      * @return the list of VFolder categories
      */
     QStringList categories() const;
 
     /**
      * Returns the list of MIME types that this application supports.
      * Note that this doesn't include inherited MIME types,
      * only the MIME types listed in the .desktop file.
      * @since 4.8.3
      */
     QStringList mimeTypes() const;
 
     /**
      * Returns the list of scheme handlers this application supports.
      *
      * For example a web browser could return {"http", "https"}.
      *
      * This is taken from the x-scheme-handler MIME types
      * listed in the .desktop file.
      *
      * @since 6.0
      *
      */
     QStringList schemeHandlers() const;
 
     /**
      * Returns the list of protocols this application supports.
      *
      * This is taken from the x-scheme-handler MIME types
      * listed in the .desktop file as well as the 'X-KDE-Protocols'
      * entry
      *
      * For example a web browser could return {"http", "https"}.
      * @since 6.0
      */
     QStringList supportedProtocols() const;
 
     /**
      * Checks whether the application supports this MIME type
      * @param mimeType The name of the MIME type you are
      *        interested in determining whether this service supports.
      * @since 4.6
      */
     bool hasMimeType(const QString &mimeType) const;
 
     /**
      * Returns the actions defined in this desktop file
      */
     QList<KServiceAction> actions() const;
 
     /**
      * Checks whether this application can handle several files as
      * startup arguments.
      * @return true if multiple files may be passed to this service at
      * startup. False if only one file at a time may be passed.
      */
     bool allowMultipleFiles() const;
 
     /**
      * What preference to associate with this application initially (before
      * the user has had any chance to define a profile for it).
      * The bigger the value, the stronger the preference for the application.
      * @return the service preference level of the application
      */
     int initialPreference() const;
 
     /**
      * Whether the entry should be hidden from the menu.
      * @return @c true to hide this application from the menu
      *
      * Such services still appear in trader queries, i.e. in
      * "Open With" popup menus for instance.
      */
     bool noDisplay() const;
 
     /**
      * Whether the application should be shown in the current desktop
      * (including in context menus).
      * @return true if the application should be shown in the current desktop.
      *
      * KApplicationTrader honors this and removes such services
      * from its results.
      *
      * @since 5.0
      */
     bool showInCurrentDesktop() const;
 
     /**
      * Whether the application should be shown on the current
      * platform (e.g. on xcb or on wayland).
      * @return @c true if the application should be shown on the current platform.
      *
      * @since 5.0
      */
     bool showOnCurrentPlatform() const;
 
     /**
      * The path to the documentation for this application.
      * @since 4.2
      * @return the documentation path, or QString() if not set
      */
     QString docPath() const;
 
     /**
      * Returns the requested property.
      *
      * @tparam T the type of the requested property.
      *
      * @param name the name of the property.
      *
      * @since 6.0
      */
     template<typename T>
     T property(const QString &name) const
     {
         KServiceConversionCheck::to_QVariant<T>();
         return property(name, static_cast<QMetaType::Type>(qMetaTypeId<T>())).value<T>();
     }
 
     /**
      * Returns a path that can be used for saving changes to this
      * application
      * @return path that can be used for saving changes to this application
      */
     QString locateLocal() const;
 
     /**
      * @internal
      * Set the menu id
      */
     void setMenuId(const QString &menuId);
     /**
      * @internal
      * Sets whether to use a terminal or not
      */
     void setTerminal(bool b);
     /**
      * @internal
      * Sets the terminal options to use
      */
     void setTerminalOptions(const QString &options);
 
     /**
      * Overrides the "Exec=" line of the service.
      *
      * If @ref exec is not empty, its value will override the one
      * the one set when this application was created.
      *
      * Please note that @ref entryPath is also cleared so the application
      * will no longer be associated with a specific config file.
      *
      * @internal
      * @since 4.11
      */
     void setExec(const QString &exec);
 
     /**
      * Overrides the "Path=" line of the application.
      *
      * If @ref workingDir is not empty, its value will override
      * the one set when this application was created.
      *
      * Please note that @ref entryPath is also cleared so the application
      * will no longer be associated with a specific config file.
      *
      * @internal
      * @param workingDir
      * @since 5.79
      */
     void setWorkingDirectory(const QString &workingDir);
 
     /**
      * Find a application based on its path as returned by entryPath().
      * It's usually better to use serviceByStorageId() instead.
      *
      * @param _path the path of the configuration file
      * @return a pointer to the requested application or @c nullptr if the application is
      *         unknown.
      * @em Very @em important: Don't store the result in a KService* !
      */
     static Ptr serviceByDesktopPath(const QString &_path);
 
     /**
      * Find an application by the name of its desktop file, not depending on
      * its actual location (as long as it's under the applications or application
      * directories). For instance "konqbrowser" or "kcookiejar". Note that
      * the ".desktop" extension is implicit.
      *
      * This is the recommended method (safe even if the user moves stuff)
      * but note that it assumes that no two entries have the same filename.
      *
      * @param _name the name of the configuration file
      * @return a pointer to the requested application or @c nullptr if the application is
      *         unknown.
      * @em Very @em important: Don't store the result in a KService* !
      */
     static Ptr serviceByDesktopName(const QString &_name);
 
     /**
      * Find a application by its menu-id
      *
      * @param _menuId the menu id of the application
      * @return a pointer to the requested application or @c nullptr if the application is
      *         unknown.
      * @em Very @em important: Don't store the result in a KService* !
      */
     static Ptr serviceByMenuId(const QString &_menuId);
 
     /**
      * Find a application by its storage-id or desktop-file path. This
      * function will try very hard to find a matching application.
      *
      * @param _storageId the storage id or desktop-file path of the application
      * @return a pointer to the requested application or @c nullptr if the application is
      *         unknown.
      * @em Very @em important: Don't store the result in a KService* !
      */
     static Ptr serviceByStorageId(const QString &_storageId);
 
     /**
      * Returns the whole list of applications.
      *
      *  Useful for being able to
      * to display them in a list box, for example.
      * More memory consuming than the ones above, don't use unless
      * really necessary.
      * @return the list of all applications
      */
     static List allServices();
 
     /**
      * Returns a path that can be used to create a new KService based
      * on @p suggestedName.
      * @param showInMenu @c true, if the application should be shown in the KDE menu
      *        @c false, if the application should be hidden from the menu
      *        This argument isn't used anymore, use `NoDisplay=true` to hide the application.
      * @param suggestedName name to base the file on, if an application with such a
      *        name already exists, a suffix will be added to make it unique
      *        (e.g. foo.desktop, foo-1.desktop, foo-2.desktop).
      * @param menuId If provided, menuId will be set to the menu id to use for
      *        the KService
      * @param reservedMenuIds If provided, the path and menu id will be chosen
      *        in such a way that the new menu id does not conflict with any
      *        of the reservedMenuIds
      * @return The path to use for the new KService.
      */
     static QString newServicePath(bool showInMenu, const QString &suggestedName, QString *menuId = nullptr, const QStringList *reservedMenuIds = nullptr);
 
     /**
      * @brief A desktop file name that this application is an alias for.
      *
      * This is used when a `NoDisplay` application is used to enforce specific handling
      * for an application. In that case the `NoDisplay` application is an `AliasFor` another
      * application and be considered roughly equal to the `AliasFor` application (which should
      * not be `NoDisplay=true`)
      * For example Okular supplies a desktop file for each supported format (e.g. PDF), all
      * of which `NoDisplay` and it is merely there to selectively support specific file formats.
      * A UI may choose to display the aliased entry org.kde.okular instead of the NoDisplay entries.
      *
      * @since 5.96
      *
      * @return QString desktopName of the aliased application (excluding .desktop suffix)
      */
     QString aliasFor() const;
 
     /**
      * Returns the value of StartupNotify for this service.
      *
      * If the service doesn't define a value nullopt is returned.
      *
      * See StartupNotify in the <a href="https://specifications.freedesktop.org/desktop-entry-spec/latest/">Desktop Entry Specification</a>.
      *
      * @since 6.0
      */
     std::optional<bool> startupNotify() const;
 
 private:
     friend class KBuildServiceFactory;
 
     QVariant property(const QString &_name, QMetaType::Type t) const;
 
     /// @internal for KBuildSycoca only
     struct KSERVICE_NO_EXPORT ServiceTypeAndPreference {
         ServiceTypeAndPreference()
             : preference(-1)
             , serviceType()
         {
         }
         ServiceTypeAndPreference(int pref, const QString &servType)
             : preference(pref)
             , serviceType(servType)
         {
         }
         int preference;
         QString serviceType; // or MIME type
     };
     /// @internal for KBuildSycoca only
     QList<ServiceTypeAndPreference> _k_accessServiceTypes();
 
     void setActions(const QList<KServiceAction> &actions);
 
     friend QDataStream &operator>>(QDataStream &, ServiceTypeAndPreference &);
     friend QDataStream &operator<<(QDataStream &, const ServiceTypeAndPreference &);
 
     Q_DECLARE_PRIVATE(KService)
 
     friend class KServiceFactory;
 
     /**
      * @internal
      * Construct a service from a stream.
      * The stream must already be positioned at the correct offset.
      */
     KSERVICE_NO_EXPORT KService(QDataStream &str, int offset);
 };
 
 template<>
 KSERVICE_EXPORT QString KService::property<QString>(const QString &name) const;
 
 #endif