## GOPlugin

GOPlugin

## Synopsis

    void                (*GOPluginMethod)                   (GOPlugin *plugin,
                                                             GOCmdContext *cc);
                        GOPluginServiceResource;
    void                go_plugin_activate                  (GOPlugin *plugin,
                                                             GOErrorInfo **ret_error);
    gboolean            go_plugin_can_deactivate            (GOPlugin *plugin);
    void                go_plugin_db_activate_plugin_list   (GSList *plugins,
                                                             GOErrorInfo **ret_error);
    void                go_plugin_db_deactivate_plugin_list (GSList *plugins,
                                                             GOErrorInfo **ret_error);
    gboolean            go_plugin_db_is_plugin_marked_for_deactivation
                                                            (GOPlugin *plugin);
    void                go_plugin_db_mark_plugin_for_deactivation
                                                            (GOPlugin *plugin,
                                                             gboolean mark);
    void                go_plugin_deactivate                (GOPlugin *plugin,
                                                             GOErrorInfo **ret_error);
    GSList *            go_plugin_get_dependencies_ids      (GOPlugin *plugin);
    char const  *       go_plugin_get_description           (GOPlugin *plugin);
    char const  *       go_plugin_get_dir_name              (GOPlugin *plugin);
    char const  *       go_plugin_get_id                    (GOPlugin *plugin);
    GOPluginLoader *    go_plugin_get_loader                (GOPlugin *plugin);
    char const  *       go_plugin_get_name                  (GOPlugin *plugin);
    GSList *            go_plugin_get_services              (GOPlugin *plugin);
    char const  *       go_plugin_get_textdomain            (GOPlugin *plugin);
    GTypeModule *       go_plugin_get_type_module           (GOPlugin *plugin);
    gboolean            go_plugin_is_active                 (GOPlugin *plugin);
    gboolean            go_plugin_is_loaded                 (GOPlugin *plugin);
    void                go_plugin_load_service              (GOPlugin *plugin,
                                                             GOPluginService *service,
                                                             GOErrorInfo **ret_error);
    void                go_plugin_unload_service            (GOPlugin *plugin,
                                                             GOPluginService *service,
                                                             GOErrorInfo **ret_error);
    void                go_plugin_use_ref                   (GOPlugin *plugin);
    void                go_plugin_use_unref                 (GOPlugin *plugin);
    GSList *            go_plugins_get_active_plugins       (void);
    GSList *            go_plugins_get_available_plugins    (void);
    GOPlugin *          go_plugins_get_plugin_by_id         (const gchar *plugin_id);
    char *              go_plugins_get_plugin_dir           (void);
    void                go_plugins_init                     (GOCmdContext *context,
                                                             GSList const *known_states,
                                                             GSList const *active_plugins,
                                                             GSList *plugin_dirs,
                                                             gboolean activate_new_plugins,
                                                             GType default_loader_type);
    void                go_plugins_register_loader          (const gchar *id_str,
                                                             GOPluginService *service);
    void                go_plugins_rescan                   (GOErrorInfo **ret_error,
                                                             GSList **ret_new_plugins);
    GSList *            go_plugins_shutdown                 (void);
    void                go_plugins_unregister_loader        (const gchar *id_str);

## Object Hierarchy

      GObject
       +----GOPluginService
             +----GOPluginServiceResource

## Description

## Details

### GOPluginMethod ()

    void                (*GOPluginMethod)                   (GOPlugin *plugin,
                                                             GOCmdContext *cc);

### GOPluginServiceResource

    typedef struct _GOPluginServiceResource GOPluginServiceResource;

### go_plugin_activate ()

    void                go_plugin_activate                  (GOPlugin *plugin,
                                                             GOErrorInfo **ret_error);

Activates `plugin` together with all its dependencies. In case of error the plugin won't be activated and detailed error information will be returned using `ret_error`.

`plugin` : | GOPlugin
`ret_error` : | Pointer used to report errors

### go_plugin_can_deactivate ()

    gboolean            go_plugin_can_deactivate            (GOPlugin *plugin);

Tells if the plugin can be deactivated using go_plugin_deactivate.

`plugin` : | GOPlugin
Returns : | TRUE if `plugin` can be deactivated and FALSE otherwise.

### go_plugin_db_activate_plugin_list ()

    void                go_plugin_db_activate_plugin_list   (GSList *plugins,
                                                             GOErrorInfo **ret_error);

Activates all plugins in the list. If some of the plugins cannot be activated, the function reports this via `ret_error` (errors don't affect plugins activated successfully).

`plugins` : | The list of plugins. [element-type GOPlugin]
`ret_error` : | Pointer used to report errors

### go_plugin_db_deactivate_plugin_list ()

    void                go_plugin_db_deactivate_plugin_list (GSList *plugins,
                                                             GOErrorInfo **ret_error);

Deactivates all plugins in the list. If some of the plugins cannot be deactivated, the function reports this via `ret_error` (errors don't affect plugins deactivated successfully).

`plugins` : | The list of plugins. [element-type GOPlugin]
`ret_error` : | Pointer used to report errors

### go_plugin_db_is_plugin_marked_for_deactivation ()

    gboolean            go_plugin_db_is_plugin_marked_for_deactivation
                                                            (GOPlugin *plugin);

`plugin` : | GOPlugin

### go_plugin_db_mark_plugin_for_deactivation ()

    void                go_plugin_db_mark_plugin_for_deactivation
                                                            (GOPlugin *plugin,
                                                             gboolean mark);

`plugin` : | GOPlugin

### go_plugin_deactivate ()

    void                go_plugin_deactivate                (GOPlugin *plugin,
                                                             GOErrorInfo **ret_error);

Dectivates `plugin`. Its dependencies will NOT be automatically deactivated. In case of error the plugin won't be deactivated and detailed error information will be returned using `ret_error`.

`plugin` : | GOPlugin
`ret_error` : | Pointer used to report errors

### go_plugin_get_dependencies_ids ()

    GSList *            go_plugin_get_dependencies_ids      (GOPlugin *plugin);

`plugin` : | GOPlugin
Returns : | the list of identifiers of plugins that `plugin` depends on. All these plugins will be automatically activated before activating the `plugin` itself. The caller must free the returned list together with the strings it points to (use g_slist_free_full (list, g_free) to do this). [element-type char][transfer full]

### go_plugin_get_description ()

    char const  *       go_plugin_get_description           (GOPlugin *plugin);

`plugin` : | GOPlugin
Returns : | textual description of `plugin` or NULL if description is not available. Returned string stays valid during `plugin`'s lifetime.

### go_plugin_get_dir_name ()

    char const  *       go_plugin_get_dir_name              (GOPlugin *plugin);

`plugin` : | GOPlugin
Returns : | the name of the directory in which `plugin` is located. Returned string is != NULL and stays valid during `plugin`'s lifetime.

### go_plugin_get_id ()

    char const  *       go_plugin_get_id                    (GOPlugin *plugin);

`plugin` : | GOPlugin
Returns : | the ID of `plugin` (unique string used for idenfification of plugin). Returned string is != NULL and stays valid during `plugin`'s lifetime.

### go_plugin_get_loader ()

    GOPluginLoader *    go_plugin_get_loader                (GOPlugin *plugin);

`plugin` : | GOPlugin
Returns : | The loader. [transfer none]

### go_plugin_get_name ()

    char const  *       go_plugin_get_name                  (GOPlugin *plugin);

`plugin` : | GOPlugin
Returns : | textual name of `plugin`. If the real name is not available for some reason, automatically generated string will be returned. Returned string is != NULL and stays valid during `plugin`'s lifetime.

### go_plugin_get_services ()

    GSList *            go_plugin_get_services              (GOPlugin *plugin);

`plugin` : | GOPlugin
Returns : | A list of services. The list must not be freed or changed. [element-type GOPluginService][transfer none]

### go_plugin_get_textdomain ()

    char const  *       go_plugin_get_textdomain            (GOPlugin *plugin);

`plugin` : | GOPlugin
Returns : | plugin's textdomain for use with textdomain(3) and d*gettext(3) functions.

### go_plugin_get_type_module ()

    GTypeModule *       go_plugin_get_type_module           (GOPlugin *plugin);

`plugin` : | GOPlugin
Returns : | the GTypeModule associated with the plugin creating it if necessary. [transfer none]

### go_plugin_is_active ()

    gboolean            go_plugin_is_active                 (GOPlugin *plugin);

`plugin` : | GOPlugin
Returns : | TRUE if `plugin` is active and FALSE otherwise.

### go_plugin_is_loaded ()

    gboolean            go_plugin_is_loaded                 (GOPlugin *plugin);

`plugin` : | GOPlugin
Returns : | TRUE if `plugin` is loaded and FALSE otherwise.

### go_plugin_load_service ()

    void                go_plugin_load_service              (GOPlugin *plugin,
                                                             GOPluginService *service,
                                                             GOErrorInfo **ret_error);

Loads base part of the plugin if it is not loaded and then loads given plugin service (prepares necessary part of the plugin for direct use). This function is intended for use by GOPluginService objects.

`plugin` : | GOPlugin
`service` : | Plugin service
`ret_error` : | Pointer used to report errors

### go_plugin_unload_service ()

    void                go_plugin_unload_service            (GOPlugin *plugin,
                                                             GOPluginService *service,
                                                             GOErrorInfo **ret_error);

... This function is intended for use by GOPluginService objects.

`plugin` : | GOPlugin
`service` : | Plugin service
`ret_error` : | Pointer used to report errors

### go_plugin_use_ref ()

    void                go_plugin_use_ref                   (GOPlugin *plugin);

`plugin` : | GOPlugin

### go_plugin_use_unref ()

    void                go_plugin_use_unref                 (GOPlugin *plugin);

`plugin` : | GOPlugin

### go_plugins_get_active_plugins ()

    GSList *            go_plugins_get_active_plugins       (void);

Returns : | the list of active plugins names. The caller needs to free the list, but not the content. [element-type char][transfer container]

### go_plugins_get_available_plugins ()

    GSList *            go_plugins_get_available_plugins    (void);

Returns : | the list of available plugins. The returned value must not be freed and stays valid until calling plugins_rescan or plugins_shutdown. [element-type GOPlugin][transfer container]

### go_plugins_get_plugin_by_id ()

    GOPlugin *          go_plugins_get_plugin_by_id         (const gchar *plugin_id);

`plugin_id` : | String containing plugin ID
Returns : | GOPlugin object for plugin with ID equal to `plugin_id` or NULL if there's no plugin available with given id. Function returns "borrowed" reference, use g_object_ref if you want to be sure that plugin won't disappear. [transfer none]

### go_plugins_get_plugin_dir ()

    char *              go_plugins_get_plugin_dir           (void);

### go_plugins_init ()

    void                go_plugins_init                     (GOCmdContext *context,
                                                             GSList const *known_states,
                                                             GSList const *active_plugins,
                                                             GSList *plugin_dirs,
                                                             gboolean activate_new_plugins,
                                                             GType default_loader_type);

Initializes the plugin subsystem. Might be called several times to add new plugins.

`context` : | GOCmdContext used to report errors
`known_states` : | A list of known states (defined how ?). [element-type char]
`active_plugins` : | A list of active plugins. [element-type char]
`plugin_dirs` : | a list of directories to search for plugins. [element-type char]
`activate_new_plugins` : | activate plugins we have no seen before.
`default_loader_type` : | importer to use by default.

### go_plugins_register_loader ()

    void                go_plugins_register_loader          (const gchar *id_str,
                                                             GOPluginService *service);

Registers new type of plugin loader identified by `loader_id` (identifier consists of loader's plugin ID and service ID concatenated using colon). All requests to create new loader object of this type will be passed to `service`.

This function is intended for use by GOPluginService objects.

`id_str` : | Loader's id
`service` : | Plugin service of type "plugin_loader"

### go_plugins_rescan ()

    void                go_plugins_rescan                   (GOErrorInfo **ret_error,
                                                             GSList **ret_new_plugins);

`ret_error` : | Pointer used to report errors
`ret_new_plugins` : | Optional pointer to return list of new plugins. [element-type GOPlugin]

### go_plugins_shutdown ()

    GSList *            go_plugins_shutdown                 (void);

Shuts down the plugin subsystem. Call this function only once before exiting the application. Some plugins may be left active or in broken state, so calling plugins_init again will NOT work properly.

Returns : | the list of plugins still in use. [element-type char][transfer full]

### go_plugins_unregister_loader ()

    void                go_plugins_unregister_loader        (const gchar *id_str);

Unregisters a type of plugin loader identified by `loader_id`. After callingthis function Gnumeric will be unable to load plugins supported by the specified loader.

This function is intended for use by GOPluginService objects.

`id_str` : | Loader's id