GcrCollection

GcrCollection — A collection of objects.

Synopsis

                    GcrCollection;
guint               gcr_collection_get_length           (GcrCollection *self);
GList *             gcr_collection_get_objects          (GcrCollection *self);
gboolean            gcr_collection_contains             (GcrCollection *self,
                                                         GObject *object);
void                gcr_collection_emit_added           (GcrCollection *self,
                                                         GObject *object);
void                gcr_collection_emit_removed         (GcrCollection *self,
                                                         GObject *object);

Object Hierarchy

  GInterface
   +----GcrCollection

Prerequisites

GcrCollection requires GObject.

Known Implementations

GcrCollection is implemented by GcrFilterCollection, GcrSimpleCollection and GcrUnionCollection.

Signals

  "added"                                          : Run Last
  "removed"                                        : Run Last

Description

A GcrCollection is used to group a set of objects. This is an abstract interface which can be used to determine which objects show up in a selector or other user interface element.

Use gcr_simple_collection_new() to create a concrete implementation of this interface which you can add objects to.

Details

GcrCollection

typedef struct _GcrCollection GcrCollection;

A GcrCollection is used to group a set of objects.

gcr_collection_get_length ()

guint               gcr_collection_get_length           (GcrCollection *self);

Get the number of objects in this collection.

self :

 The collection

Returns :

 The number of objects.

gcr_collection_get_objects ()

GList *             gcr_collection_get_objects          (GcrCollection *self);

Get a list of the objects in this collection.

self :

 The collection

Returns :

 a list of the objects in this collection, which should be freed with g_list_free(). [transfer container][element-type GObject.Object]

gcr_collection_contains ()

gboolean            gcr_collection_contains             (GcrCollection *self,
                                                         GObject *object);

Check whether the collection contains an object or not.

self :

 the collection

object :

 object to check

Returns :

 whether the collection contains this object

gcr_collection_emit_added ()

void                gcr_collection_emit_added           (GcrCollection *self,
                                                         GObject *object);

Emit the "added" signal for the given object. This function is used by implementors of this interface.

self :

 The collection

object :

 The object that was added

gcr_collection_emit_removed ()

void                gcr_collection_emit_removed         (GcrCollection *self,
                                                         GObject *object);

Emit the "removed" signal for the given object. This function is used by implementors of this interface.

self :

 The collection

object :

 The object that was removed

Signal Details

The "added" signal

void                user_function                      (GcrCollection *self,
                                                        GObject       *object,
                                                        gpointer       user_data)      : Run Last

This signal is emitted when an object is added to the collection.

self :

 the collection

object :

 object that was added. [type GObject.Object]

user_data :

 user data set when the signal handler was connected.

The "removed" signal

void                user_function                      (GcrCollection *self,
                                                        GObject       *object,
                                                        gpointer       user_data)      : Run Last

This signal is emitted when an object is removed from the collection.

self :

 the collection

object :

 object that was removed. [type GObject.Object]

user_data :

 user data set when the signal handler was connected.
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