## AnjutaPreferences

AnjutaPreferences — Anjuta Prefereces system.

##

# Synopsis

    enum        AnjutaPropertyObjectType;
    enum        AnjutaPropertyDataType;
    enum        AnjutaPreferencesFilterType;
    struct      AnjutaProperty;
    GtkWidget*  anjuta_property_get_widget      (AnjutaProperty *prop);
    struct      AnjutaPreferencesPriv;
    gboolean    (*AnjutaPreferencesCallback)    (AnjutaPreferences *pr,
                                                 const gchar *key,
                                                 gpointer data);
    GtkWidget*  anjuta_preferences_new          (void);
    void        anjuta_preferences_add_page     (AnjutaPreferences *pr,
                                                 GladeXML *gxml,
                                                 const char *glade_widget_name,
                                                 const gchar *icon_filename);
    void        anjuta_preferences_register_all_properties_from_glade_xml
                                                (AnjutaPreferences *pr,
                                                 GladeXML *gxml,
                                                 GtkWidget *parent);
    gboolean    anjuta_preferences_register_property_from_string
                                                (AnjutaPreferences *pr,
                                                 GtkWidget *object,
                                                 const gchar *property_desc);
    gboolean    anjuta_preferences_register_property_raw
                                                (AnjutaPreferences *pr,
                                                 GtkWidget *object,
                                                 const gchar *key,
                                                 const gchar *default_value,
                                                 guint flags,
                                                 AnjutaPropertyObjectType object_type,
                                                 AnjutaPropertyDataType data_type);
    gboolean    anjuta_preferences_register_property_custom
                                                (AnjutaPreferences *pr,
                                                 GtkWidget *object,
                                                 const gchar *key,
                                                 const gchar *default_value,
                                                 AnjutaPropertyDataType data_type,
                                                 guint flags,
                                                 void (*set_property) (AnjutaProperty *prop, const gchar *value),
                                                 gchar* (*get_property) (AnjutaProperty *));
    void        anjuta_preferences_reset_defaults
                                                (AnjutaPreferences *pr);
    gboolean    anjuta_preferences_load_gconf   (AnjutaPreferences *pr);
    gboolean    anjuta_preferences_save         (AnjutaPreferences *pr,
                                                 FILE *stream);
    gboolean    anjuta_preferences_save_filtered
                                                (AnjutaPreferences *pr,
                                                 FILE *stream,
                                                 AnjutaPreferencesFilterType filter);
    gboolean    anjuta_preferences_save_gconf   (AnjutaPreferences *pr,
                                                 AnjutaPreferencesFilterType filter);
    void        anjuta_preferences_foreach      (AnjutaPreferences *pr,
                                                 AnjutaPreferencesFilterType filter,
                                                 AnjutaPreferencesCallback callback,
                                                 gpointer data);
    void        anjuta_preferences_sync_to_session
                                                (AnjutaPreferences *pr);
    guint       anjuta_preferences_notify_add   (AnjutaPreferences *pr,
                                                 const gchar *key,
                                                 GConfClientNotifyFunc func,
                                                 gpointer data,
                                                 GFreeFunc destroy_notify);
    void        anjuta_preferences_notify_remove
                                                (AnjutaPreferences *pr,
                                                 guint notify_id);
    const gchar* anjuta_preferences_get_prefix  (AnjutaPreferences *pr);

## Description

AnjutaPreferences is a way to let plugins register their preferences. There are mainly two ways a plugin could register its preferences in Anjuta.

First is to not use AnjutaPreferences at all. Simply register a preferences page in AnjutaPreferencesDialog using the function `anjuta_preferences_dialog_add_page()`. The plugin should take care of loading, saving and widgets synchronization of the preferences values. It is particularly useful if the plugin uses gconf system for its preferences. Also no "changed" signal will be emitted from it.

Second is to use `anjuta_preferences_add_page()`, which will automatically register the preferences keys and values from a glade xml file. The glade xml file contains a preferences page of the plugin. The widget names in the page are given in a particular way (see `anjuta_preferences_add_page()`) to let it know property key details. Loading, saving and widget synchronization are automatically done. "changed" signal is emitted when a preference is changed.

`anjuta_preferences_register_all_properties_from_glade_xml()` only registers the preferences propery keys for automatic loading, saving and widget syncrhronization, but does not add the page in preferences dialog. It is useful if the plugin wants to show the preferences page somewhere else.

`anjuta_preferences_register_property_from_string()` is similar to `anjuta_preferences_register_all_properties_from_glade_xml()`, but it only registers one property, the detail of which is given in its arguments. `anjuta_preferences_register_property_custom()` is used to register a property that uses a widget which is not supported by AnjutaPreferences.

## Details

### enum AnjutaPropertyObjectType

    typedef enum
    {
    	ANJUTA_PROPERTY_OBJECT_TYPE_TOGGLE,
    	ANJUTA_PROPERTY_OBJECT_TYPE_SPIN,
    	ANJUTA_PROPERTY_OBJECT_TYPE_ENTRY,
    	ANJUTA_PROPERTY_OBJECT_TYPE_MENU,
    	ANJUTA_PROPERTY_OBJECT_TYPE_TEXT,
    	ANJUTA_PROPERTY_OBJECT_TYPE_COLOR,
    	ANJUTA_PROPERTY_OBJECT_TYPE_FONT
    } AnjutaPropertyObjectType;

### enum AnjutaPropertyDataType

    typedef enum
    {
    	ANJUTA_PROPERTY_DATA_TYPE_BOOL,
    	ANJUTA_PROPERTY_DATA_TYPE_INT,
    	ANJUTA_PROPERTY_DATA_TYPE_TEXT,
    	ANJUTA_PROPERTY_DATA_TYPE_COLOR,
    	ANJUTA_PROPERTY_DATA_TYPE_FONT
    } AnjutaPropertyDataType;

### enum AnjutaPreferencesFilterType

    typedef enum
    {
    	ANJUTA_PREFERENCES_FILTER_NONE = 0,
    	ANJUTA_PREFERENCES_FILTER_PROJECT = 1
    } AnjutaPreferencesFilterType;

### struct AnjutaProperty

    struct AnjutaProperty;

### anjuta_property_get_widget ()

    GtkWidget*  anjuta_property_get_widget      (AnjutaProperty *prop);

Gets the widget associated with the property.

`prop` : | an AnjutaProperty reference
Returns : | a GtkWidget object associated with the property.

### struct AnjutaPreferencesPriv

    struct AnjutaPreferencesPriv;

### AnjutaPreferencesCallback ()

    gboolean    (*AnjutaPreferencesCallback)    (AnjutaPreferences *pr,
                                                 const gchar *key,
                                                 gpointer data);

`pr` : |
`key` : |
`data` : |
Returns : |

### anjuta_preferences_new ()

    GtkWidget*  anjuta_preferences_new          (void);

Creates a new AnjutaPreferences object

Returns : | A AnjutaPreferences object.

### anjuta_preferences_add_page ()

    void        anjuta_preferences_add_page     (AnjutaPreferences *pr,
                                                 GladeXML *gxml,
                                                 const char *glade_widget_name,
                                                 const gchar *icon_filename);

Add a page to the preferences sytem. gxml is the GladeXML object of the glade dialog containing the page widget. The glade dialog will contain the layout of the preferences widgets. The widgets which are preference widgets (e.g. toggle button) should have widget names of the form:

        preferences_OBJECTTYPE:DATATYPE:DEFAULT:FLAGS:PROPERTYKEY
        where,
          OBJECTTYPE is 'toggle', 'spin', 'entry', 'text', 'color' or 'font'.
          DATATYPE   is 'bool', 'int', 'float', 'text', 'color' or 'font'.
          DEFAULT    is the default value (in the appropriate format). The format
                        for color is 'XXXXXX' representing RGB value and for
                        font, it is the pango font description.
          FLAGS      is any flag associated with the property. Currently it
                        has only two values -- 0 and 1. For normal preference
                        property which is saved/retrieved globally, the flag = 0.
                        For preference property which is also saved/retrieved
                        along with the project, the flag = 1.
          PROPERTYKEY is the property key. e.g - 'tab.size'.

All widgets having the above names in the gxml tree will be registered and will become part of auto saving/loading. For example, refer to anjuta preferences dialogs and study the widget names.

`pr` : | a AnjutaPreferences object
`gxml` : | GladeXML object containing the preferences page
`glade_widget_name` : | Page widget name (as give with glade interface editor). The widget will be searched with the given name and detached (that is, removed from the container, if present) from it's parent.
`icon_filename` : | File name (of the form filename.png) of the icon representing the preference page.

### anjuta_preferences_register_all_properties_from_glade_xml ()

    void        anjuta_preferences_register_all_properties_from_glade_xml
                                                (AnjutaPreferences *pr,
                                                 GladeXML *gxml,
                                                 GtkWidget *parent);

This will register all the properties names of the format described above without considering the UI. Useful if you have the widgets shown elsewhere but you want them to be part of preferences system.

`pr` : | a AnjutaPreferences Object
`gxml` : | GladeXML object containing the properties widgets.
`parent` : | Parent widget in the gxml object

### anjuta_preferences_register_property_from_string ()

    gboolean    anjuta_preferences_register_property_from_string
                                                (AnjutaPreferences *pr,
                                                 GtkWidget *object,
                                                 const gchar *property_desc);

This registers only one widget. The widget could be shown elsewhere. the property_description should be of the form described before.

`pr` : | a AnjutaPreferences object
`object` : | Widget to register
`property_desc` : | Property description (see `anjuta_preferences_add_pag()`)
Returns : | TRUE if sucessful.

### anjuta_preferences_register_property_raw ()

    gboolean    anjuta_preferences_register_property_raw
                                                (AnjutaPreferences *pr,
                                                 GtkWidget *object,
                                                 const gchar *key,
                                                 const gchar *default_value,
                                                 guint flags,
                                                 AnjutaPropertyObjectType object_type,
                                                 AnjutaPropertyDataType data_type);

This also registers only one widget, but instead of supplying the property parameters as a single parsable string (as done in previous method), it takes them separately.

`pr` : | a AnjutaPreferences object
`object` : | Widget to register
`key` : | Property key
`default_value` : | Default value of the key
`flags` : | Flags
`object_type` : | Object type of widget
`data_type` : | Data type of the property
Returns : | TRUE if sucessful.

### anjuta_preferences_register_property_custom ()

    gboolean    anjuta_preferences_register_property_custom
                                                (AnjutaPreferences *pr,
                                                 GtkWidget *object,
                                                 const gchar *key,
                                                 const gchar *default_value,
                                                 AnjutaPropertyDataType data_type,
                                                 guint flags,
                                                 void (*set_property) (AnjutaProperty *prop, const gchar *value),
                                                 gchar* (*get_property) (AnjutaProperty *));

This is meant for complex widgets which can not be set/get with the standard object set/get methods. Custom set/get methods are passed for the property to set/get the value to/from the widget.

`pr` : | a AnjutaPreferences object.
`object` : | Object to register.
`key` : | Property key.
`default_value` : | Default value of the key.
`data_type` : | property data type.
`flags` : | Flags
`set_property` : | Set property to widget callback.
`get_property` : | Get property from widget callback.
Returns : | TRUE if sucessful.

### anjuta_preferences_reset_defaults ()

    void        anjuta_preferences_reset_defaults
                                                (AnjutaPreferences *pr);

Resets the default values into the keys

`pr` : | a AnjutaPreferences object.

### anjuta_preferences_load_gconf ()

    gboolean    anjuta_preferences_load_gconf   (AnjutaPreferences *pr);

`pr` : |
Returns : |

### anjuta_preferences_save ()

    gboolean    anjuta_preferences_save         (AnjutaPreferences *pr,
                                                 FILE *stream);

`pr` : |
`stream` : |
Returns : |

### anjuta_preferences_save_filtered ()

    gboolean    anjuta_preferences_save_filtered
                                                (AnjutaPreferences *pr,
                                                 FILE *stream,
                                                 AnjutaPreferencesFilterType filter);

`pr` : |
`stream` : |
`filter` : |
Returns : |

### anjuta_preferences_save_gconf ()

    gboolean    anjuta_preferences_save_gconf   (AnjutaPreferences *pr,
                                                 AnjutaPreferencesFilterType filter);

`pr` : |
`filter` : |
Returns : |

### anjuta_preferences_foreach ()

    void        anjuta_preferences_foreach      (AnjutaPreferences *pr,
                                                 AnjutaPreferencesFilterType filter,
                                                 AnjutaPreferencesCallback callback,
                                                 gpointer data);

Calls `callback` function for each of the registered property keys. Keys with matching `filter` flags are left out of the loop. If `filter` is ANJUTA_PREFERENCES_FILTER_NONE, all properties are selected for the loop.

`pr` : | A AnjutaPreferences object.
`filter` : | Keys to filter out from the loop.
`callback` : | User callback function.
`data` : | User data passed to `callback`

### anjuta_preferences_sync_to_session ()

    void        anjuta_preferences_sync_to_session
                                                (AnjutaPreferences *pr);

`pr` : |

### anjuta_preferences_notify_add ()

    guint       anjuta_preferences_notify_add   (AnjutaPreferences *pr,
                                                 const gchar *key,
                                                 GConfClientNotifyFunc func,
                                                 gpointer data,
                                                 GFreeFunc destroy_notify);

This is similar to `gconf_client_notify_add()`, except that the key is not given as full path. Only anjuta preference key is given. The key prefix is added internally.

`pr` : | A AnjutaPreferences object.
`key` : | Key to monitor.
`func` : | User callback function.
`data` : | User data passed to `func`
`destroy_notify` : | Destroy notify function - called when notify is removed.
Returns : | Notify ID.

### anjuta_preferences_notify_remove ()

    void        anjuta_preferences_notify_remove
                                                (AnjutaPreferences *pr,
                                                 guint notify_id);

Removes the notify callback added with `anjuta_preferences_notify_add()`.

`pr` : | A AnjutaPreferences object.
`notify_id` : | Notify ID returned by `anjuta_preferences_notify_add()`.

### anjuta_preferences_get_prefix ()

    const gchar* anjuta_preferences_get_prefix  (AnjutaPreferences *pr);

Returns the gconf key prefix used by anjuta to store its preferences.

`pr` : | A AnjutaPreferences object.
Returns : | preferences keys prefix.