Implementing it

Create a MateComponentItemHandler. This component will let you do argument parsing of any kind.

You have to provide two functions: enumObjects (this can be empty) and getObject.

The getObject function will be called when the moniker mechanism is trying to resolve a set of arguments to your function.

Like this:

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MateComponent_Unknown
getObject (MateComponentItemHandler *h, const char *item_name,
           gboolean only_if_exists, gpointer data,
           CORBA_Environment *ev)
{
        MyData *m = data;
        if (strcmp (item_name, "friendly") == 0){
                m->friendly = true;
        }
        /* we just return ourselves */
        return matecomponent_object_dup_ref (matecomponent_object_corba_objref (h), NULL);
}

So basically during the `getObject' operation you will be given a chance to process the `item_name' string which is basically like a command line argument (for the sake of explaining this) and based on this information you can customize your component.

Sample functions

Sometimes you will want to specify a bunch of options to configure your component, like this:

OAFIID:MyComponent!visible=true;image=blah.png

So we are separating the various options with semi-colons here. To simplify your code, we have provided a couple of functions that given the following string:

visible=true;image=blah.png

Will return a GList split with MateComponentItemOptions:

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GSList *l, *x;
x = matecomponent_item_option_parse ("visible=true;image=blah.png");
for (l = x; l != NULL; l++){
    MateComponentItemOption *io = l->data;
    printf ("Key=%s, Value=%s\n", io->key, io->value);
}
matecomponent_item_option_free (x);

MateComponentItemHandler

typedef struct _MateComponentItemHandler MateComponentItemHandler;

MateComponent::ItemHandler implementation

MateComponentItemHandlerClass

typedef struct {
	MateComponentObjectClass parent_class;

	POA_MateComponent_ItemContainer__epv epv;
} MateComponentItemHandlerClass;

MateComponentItemHandler class

matecomponent_item_handler_new ()

MateComponentItemHandler * matecomponent_item_handler_new             (MateComponentItemHandlerEnumObjectsFn enum_objects,
                                                         MateComponentItemHandlerGetObjectFn get_object,
                                                         gpointer user_data);

Creates a new MateComponentItemHandler object. These are used to hold client sites.

matecomponent_item_handler_new_closure ()

MateComponentItemHandler * matecomponent_item_handler_new_closure     (GClosure *enum_objects,
                                                         GClosure *get_object);

Creates a new MateComponentItemHandler object. These are used to hold client sites.

matecomponent_item_handler_construct ()

MateComponentItemHandler * matecomponent_item_handler_construct       (MateComponentItemHandler *handler,
                                                         GClosure *enum_objects,
                                                         GClosure *get_object);

Constructs the container MateComponentObject using the provided closures for the actual implementation.

MateComponentItemOption

typedef struct {
	char *key;
	char *value;
} MateComponentItemOption;

A key-value pair.

matecomponent_item_option_parse ()

GSList *            matecomponent_item_option_parse            (const char *option_string);

matecomponent_item_options_free ()

void                matecomponent_item_options_free            (GSList *options);

Use this to release a list returned by matecomponent_item_option_parse()