WebKitFaviconDatabase: WebKit2GTK+ Reference Manual

WebKitFaviconDatabase

WebKitFaviconDatabase — A WebKit favicon database

Functions

void	webkit_favicon_database_get_favicon ()
cairo_surface_t *	webkit_favicon_database_get_favicon_finish ()
gchar *	webkit_favicon_database_get_favicon_uri ()
void	webkit_favicon_database_clear ()

Signals

void

favicon-changed

Run Last

Types and Values

struct	WebKitFaviconDatabase
#define	WEBKIT_FAVICON_DATABASE_ERROR
enum	WebKitFaviconDatabaseError

Object Hierarchy

    GObject
    ╰── WebKitFaviconDatabase

Description

WebKitFaviconDatabase provides access to the icons associated with web sites.

WebKit will automatically look for available icons in <link> elements on opened pages as well as an existing favicon.ico and load the images found into a memory cache if possible. That cache is frozen to an on-disk database for persistence.

If “enable-private-browsing” is TRUE, new icons won't be added to the on-disk database and no existing icons will be deleted from it. Nevertheless, WebKit will still store them in the in-memory cache during the current execution.

Functions

webkit_favicon_database_get_favicon ()

void
webkit_favicon_database_get_favicon (WebKitFaviconDatabase *database,
                                     const gchar *page_uri,
                                     GCancellable *cancellable,
                                     GAsyncReadyCallback callback,
                                     gpointer user_data);

Asynchronously obtains a cairo_surface_t of the favicon for the given page URI. It returns the cached icon if it's in the database asynchronously waiting for the icon to be read from the database.

This is an asynchronous method. When the operation is finished, callback will be invoked. You can then call webkit_favicon_database_get_favicon_finish() to get the result of the operation.

You must call webkit_web_context_set_favicon_database_directory() for the WebKitWebContext associated with this WebKitFaviconDatabase before attempting to use this function; otherwise, webkit_favicon_database_get_favicon_finish() will return WEBKIT_FAVICON_DATABASE_ERROR_NOT_INITIALIZED.

Parameters

database	a WebKitFaviconDatabase
page_uri	URI of the page for which we want to retrieve the favicon
cancellable	A GCancellable or `NULL`.	[allow-none]
callback	A GAsyncReadyCallback to call when the request is satisfied or `NULL` if you don't care about the result.	[scope async]
user_data	The data to pass to `callback` .	[closure]

webkit_favicon_database_get_favicon_finish ()

cairo_surface_t *
webkit_favicon_database_get_favicon_finish
                               (WebKitFaviconDatabase *database,
                                GAsyncResult *result,
                                GError **error);

Finishes an operation started with webkit_favicon_database_get_favicon().

Parameters

database	a WebKitFaviconDatabase
result	A GAsyncResult obtained from the GAsyncReadyCallback passed to `webkit_favicon_database_get_favicon()`
error	Return location for error or `NULL`.	[allow-none]

Returns

a new reference to a cairo_surface_t, or NULL in case of error.

[transfer full]

webkit_favicon_database_get_favicon_uri ()

gchar *
webkit_favicon_database_get_favicon_uri
                               (WebKitFaviconDatabase *database,
                                const gchar *page_uri);

Obtains the URI of the favicon for the given page_uri .

Parameters

database	a WebKitFaviconDatabase
page_uri	URI of the page containing the icon

Returns

a newly allocated URI for the favicon, or NULL if the database doesn't have a favicon for page_uri .

webkit_favicon_database_clear ()

void
webkit_favicon_database_clear (WebKitFaviconDatabase *database);

Clears all icons from the database.

Parameters

database

a WebKitFaviconDatabase

Types and Values

struct WebKitFaviconDatabase

struct WebKitFaviconDatabase;

WEBKIT_FAVICON_DATABASE_ERROR

#define WEBKIT_FAVICON_DATABASE_ERROR           (webkit_favicon_database_error_quark())

enum WebKitFaviconDatabaseError

Enum values used to denote the various errors related to the WebKitFaviconDatabase.

Members

WEBKIT_FAVICON_DATABASE_ERROR_NOT_INITIALIZED	The WebKitFaviconDatabase has not been initialized yet
WEBKIT_FAVICON_DATABASE_ERROR_FAVICON_NOT_FOUND	There is not an icon available for the requested URL
WEBKIT_FAVICON_DATABASE_ERROR_FAVICON_UNKNOWN	There might be an icon for the requested URL, but its data is unknown at the moment

Signal Details

The `“favicon-changed”` signal

void
user_function (WebKitFaviconDatabase *database,
               gchar                 *page_uri,
               gchar                 *favicon_uri,
               gpointer               user_data)

This signal is emitted when the favicon URI of page_uri has been changed to favicon_uri in the database. You can connect to this signal and call webkit_favicon_database_get_favicon() to get the favicon. If you are interested in the favicon of a WebKitWebView it's easier to use the “favicon” property. See webkit_web_view_get_favicon() for more details.

Parameters

database	the object on which the signal is emitted
page_uri	the URI of the Web page containing the icon
favicon_uri	the URI of the favicon
user_data	user data set when the signal handler was connected.

Flags: Run Last