| Libbonobo Reference Manual |
|---|
bonobo-moniker-util — Object activation and construction through monikers.
Bonobo_Unknown bonobo_get_object (const CORBA_char *name, const char *interface_name, CORBA_Environment *opt_ev); Bonobo_Moniker bonobo_moniker_client_new_from_name (const CORBA_char *name, CORBA_Environment *opt_ev); CORBA_char* bonobo_moniker_client_get_name (Bonobo_Moniker moniker, CORBA_Environment *opt_ev); Bonobo_Unknown bonobo_moniker_client_resolve_default (Bonobo_Moniker moniker, const char *interface_name, CORBA_Environment *opt_ev); gboolean bonobo_moniker_client_equal (Bonobo_Moniker moniker, const CORBA_char *name, CORBA_Environment *opt_ev); void (*BonoboMonikerAsyncFn) (Bonobo_Unknown object, CORBA_Environment *ev, gpointer user_data); void bonobo_get_object_async (const CORBA_char *name, const char *interface_name, CORBA_Environment *ev, BonoboMonikerAsyncFn cb, gpointer user_data); void bonobo_moniker_client_new_from_name_async (const CORBA_char *name, CORBA_Environment *ev, BonoboMonikerAsyncFn cb, gpointer user_data); void bonobo_moniker_resolve_async (Bonobo_Moniker moniker, Bonobo_ResolveOptions *options, const char *interface_name, CORBA_Environment *ev, BonoboMonikerAsyncFn cb, gpointer user_data); void bonobo_moniker_resolve_async_default (Bonobo_Moniker moniker, const char *interface_name, CORBA_Environment *ev, BonoboMonikerAsyncFn cb, gpointer user_data); CORBA_char* bonobo_moniker_util_get_parent_name (Bonobo_Moniker moniker, CORBA_Environment *opt_ev); Bonobo_Unknown bonobo_moniker_util_qi_return (Bonobo_Unknown object, const CORBA_char *requested_interface, CORBA_Environment *ev); const char* bonobo_moniker_util_parse_name (const char *name, int *plen); int bonobo_moniker_util_seek_std_separator (const CORBA_char *str, int min_idx); char* bonobo_moniker_util_escape (const char *string, int offset); char* bonobo_moniker_util_unescape (const char *string, int num_chars); void bonobo_url_register (char *oafiid, char *url, char *mime_type, Bonobo_Unknown object, CORBA_Environment *ev); void bonobo_url_unregister (char *oafiid, char *url, CORBA_Environment *ev); Bonobo_Unknown bonobo_url_lookup (char *oafiid, char *url, CORBA_Environment *ev);
The moniker utility functions provide two sets of functions:
Helper functions for constructing and resolving monikers, and a simple get_object method that constructs and resolves against an interface in a single pass. Also, asynchronous versions of these methods are provided using the BonoboAsync code.
Helper functions for the implementation of new custom monikers are also provided here, along with a lot of the grunt code neccessary for moniker implementation, particularly constructing the chained list of sub-monikers that comprises a complex moniker.
The most useful function to get a feel for what monikers can do is the bonobo_get_object method. This is used to create a moniker and resolve it against a given interface like this:
Example 3. GetObject example
GtkWidget *
moniker_resolve_demo (void)
{
Bonobo_Control control;
CORBA_Environment ev;
CORBA_exception_init (&ev);
control = bonobo_get_object ("file:/demo/a.jpeg",
"Bonobo/Control", NULL);
if (control == CORBA_OBJECT_NIL)
g_error ("Failed to get object file:/demo/a.jpeg");
return bonobo_widget_new_control (control);
}
This also makes a control out of the widget.
It is worth noting that when resolving monikers a contracted version of the interface name may be used, ommitting the 'IDL:' prefix and / or the ':0' suffix.
Bonobo_Unknown bonobo_get_object (const CORBA_char *name,
const char *interface_name,
CORBA_Environment *opt_ev);This encapsulates both the parse stage and resolve process of using a moniker, providing a simple VisualBasic like mechanism for using the object name space.
| name : | the name of a moniker |
| interface_name : | the name of the interface we want returned as the result |
| opt_ev : | an optional corba exception environment |
| Returns : | the requested interface or CORBA_OBJECT_NIL |
Bonobo_Moniker bonobo_moniker_client_new_from_name
(const CORBA_char *name,
CORBA_Environment *opt_ev);This routine tries to parse a Moniker in string form
eg. file:/tmp/a.tar.gzgzip:tar:
into a CORBA_Object representation of this that can later be resolved against an interface.
| name : | the name of a moniker |
| opt_ev : | an optional corba exception environment |
| Returns : | a new Moniker handle |
CORBA_char* bonobo_moniker_client_get_name (Bonobo_Moniker moniker,
CORBA_Environment *opt_ev);
| moniker : | a moniker handle |
| opt_ev : | a corba exception environment |
| Returns : | the name of the moniker. |
Bonobo_Unknown bonobo_moniker_client_resolve_default
(Bonobo_Moniker moniker,
const char *interface_name,
CORBA_Environment *opt_ev);This resolves the moniker object against the given interface, with a default set of resolve options.
| moniker : | a moniker |
| interface_name : | the name of the interface we want returned as the result |
| opt_ev : | an optional corba exception environment |
| Returns : | the interfaces resolved to or CORBA_OBJECT_NIL |
gboolean bonobo_moniker_client_equal (Bonobo_Moniker moniker, const CORBA_char *name, CORBA_Environment *opt_ev);
Compare a full moniker with the given name
| moniker : | The moniker |
| name : | a moniker name eg. file:/demo/a.jpeg |
| opt_ev : | optional CORBA_Environment or NULL. |
| Returns : | TRUE if they are the same |
void (*BonoboMonikerAsyncFn) (Bonobo_Unknown object,
CORBA_Environment *ev,
gpointer user_data);Callback function, invoked when bonobo_get_object_async() completes its work.
| object : | the newly-activated object, or CORBA_OBJECT_NIL if an exception occurred |
| ev : | CORBA environment that may contain an exception if an activation error occurred |
| user_data : | user data |
void bonobo_get_object_async (const CORBA_char *name,
const char *interface_name,
CORBA_Environment *ev,
BonoboMonikerAsyncFn cb,
gpointer user_data);An async version of bonobo_get_object
| name : | |
| interface_name : | the name of the interface we want returned as the result |
| ev : | a corba exception environment |
| cb : | the async callback that gets the response |
| user_data : | user context data to pass to that callback |
void bonobo_moniker_client_new_from_name_async
(const CORBA_char *name,
CORBA_Environment *ev,
BonoboMonikerAsyncFn cb,
gpointer user_data);An asynchronous version of new_from_name
| name : | the name |
| ev : | a corba exception environment |
| cb : | the async callback that gets the response |
| user_data : | user context data to pass to that callback |
void bonobo_moniker_resolve_async (Bonobo_Moniker moniker,
Bonobo_ResolveOptions *options,
const char *interface_name,
CORBA_Environment *ev,
BonoboMonikerAsyncFn cb,
gpointer user_data);An async version of bonobo_moniker_client_resolve
| moniker : | the moniker to resolve |
| options : | resolve options |
| interface_name : | the name of the interface we want returned as the result |
| ev : | a corba exception environment |
| cb : | the async callback that gets the response |
| user_data : | user context data to pass to that callback |
void bonobo_moniker_resolve_async_default
(Bonobo_Moniker moniker,
const char *interface_name,
CORBA_Environment *ev,
BonoboMonikerAsyncFn cb,
gpointer user_data);An async version of bonobo_moniker_client_resolve_default
| moniker : | |
| interface_name : | the name of the interface we want returned as the result |
| ev : | a corba exception environment |
| cb : | the async callback that gets the response |
| user_data : | user context data to pass to that callback |
CORBA_char* bonobo_moniker_util_get_parent_name
(Bonobo_Moniker moniker,
CORBA_Environment *opt_ev);This gets the name of the parent moniker ( recursively all of the parents of this moniker ).
| moniker : | the moniker |
| opt_ev : | an optional corba exception environment |
| Returns : | the name; use CORBA_free to release it. |
Bonobo_Unknown bonobo_moniker_util_qi_return
(Bonobo_Unknown object,
const CORBA_char *requested_interface,
CORBA_Environment *ev);A helper function to share code from the end of a resolve implementation; this ensures that the returned object is of the correct interface by doing a queryInterface on the object.
| object : | the unknown to query |
| requested_interface : | the desired interface |
| ev : | a corba exception environment |
| Returns : | an handle to the requested interface |
const char* bonobo_moniker_util_parse_name (const char *name,
int *plen);This routine finds the rightmost moniker name. For example it will return "cache:" if you pass in "file:/tmp.txtcache:". It will also store the length of the parent string in plen (13 for the above example)
| name : | a moniker name |
| plen : | an optional pointer to store the parent length |
| Returns : | the name of the rightmost moniker |
int bonobo_moniker_util_seek_std_separator
(const CORBA_char *str,
int min_idx);This looks for a moniker separator in a moniker's name string.
See also bonobo_moniker_util_escape
| str : | the string to scan |
| min_idx : | the minimum offset at which a separator can be found. |
| Returns : | the position of the separator, or a pointer to the end of the string. |
char* bonobo_moniker_util_escape (const char *string,
int offset);Escapes possible separator characters inside a moniker these include '!' and '#', the '\' escaping character is used.
| string : | an unescaped string |
| offset : | an offset of characters to ignore |
| Returns : | an escaped sub-string. |
char* bonobo_moniker_util_unescape (const char *string,
int num_chars);This routine strips num_chars: from the start of string, discards the rest, and proceeds to un-escape characters escaped with '\'.
| string : | a string |
| num_chars : | the number of chars to process. |
| Returns : | the unescaped sub string. |
void bonobo_url_register (char *oafiid,
char *url,
char *mime_type,
Bonobo_Unknown object,
CORBA_Environment *ev);
| oafiid : | |
| url : | |
| mime_type : | |
| object : | |
| ev : |
void bonobo_url_unregister (char *oafiid,
char *url,
CORBA_Environment *ev);
| oafiid : | |
| url : | |
| ev : |
| << BonoboMonikerSimple | BonoboMonikerExtender >> |