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add a parameter for-each function per request from Niel Williams

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git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@10070 57a11ea4-9604-0410-9ed3-97b8803252fd
This commit is contained in:
Linas Vepstas 2004-06-20 15:48:39 +00:00
parent 9d453b6680
commit 4999b0b966
2 changed files with 46 additions and 3 deletions
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34
src/engine/qofclass.c
View File

@ -186,4 +186,38 @@ qof_class_get_default_sort (QofIdTypeConst obj_name)
return g_hash_table_lookup (sortTable, obj_name);
}
/* ================================================================ */
struct _iterate {
QofParamForeachCB fcn;
gpointer data;
};
static void
foreach_cb (gpointer key, gpointer item, gpointer arg)
{
struct _iterate *iter = arg;
QofParam *parm = item;
iter->fcn (parm, iter->data);
}
void
qof_class_param_foreach (QofIdTypeConst obj_name,
QofParamForeachCB cb, gpointer user_data)
{
struct _iterate iter;
GHashTable *param_ht;
if (!obj_name || !cb) return;
param_ht = g_hash_table_lookup (paramTable, obj_name);
if (!param_ht) return;
iter.fcn = cb;
iter.data = user_data;
g_hash_table_foreach (param_ht, foreach_cb, &iter);
}
/* ============================= END OF FILE ======================== */

15
src/engine/qofclass.h
View File

@ -116,9 +116,9 @@ typedef void (*QofSetterFunc) (gpointer, gpointer);
* object (QofIdType) or it can be a core data type (QofType).
* -- param_getfcn is the function to actually obtain the parameter
* -- param_setfcn is the function to actually set the parameter
* -- param_userdata is a place where the user can place any desiered
* user-defined data (and thus can be used by the user-defined
* setter/getter).
* -- param_userdata is a place where the object author can place any
* desired object-author-defined data (and thus can be used by the
* author-defined setter/getter).
*
* Either the getter or the setter may be NULL.
*
@ -195,6 +195,15 @@ QofAccessFunc qof_class_get_parameter_getter (QofIdTypeConst obj_name,
QofSetterFunc qof_class_get_parameter_setter (QofIdTypeConst obj_name,
const char *parameter);
/** Type definition for the paramter callback function. */
typedef void (*QofParamForeachCB) (QofParam *, gpointer user_data);
/** Call the callback once for each parameter on the indicated
* object class. The 'user_data' is passed back to teh callback.
*/
void qof_class_param_foreach (QofIdTypeConst obj_name,
QofParamForeachCB, gpointer user_data);
#endif /* QOF_CLASS_H */
/* @} */