edje: add edje_file_iterator_new().

This list the actually opened Edje file by the current process.

src/lib/edje/Edje_Common.h

@@ -1772,6 +1772,13 @@ EAPI void              edje_mmap_collection_list_free(Eina_List *lst);
  */
 EAPI Eina_Bool         edje_mmap_group_exists(Eina_File *f, const char *glob);
 
+/**
+ * @brief Iterate over all the opened Edje file.
+ *
+ * @return an iterator of Eina_File currently opened Edje file.
+ */
+EAPI Eina_Iterator *edje_file_iterator_new(void);
+
 /**
  * Get a list of groups in an edje file
  * @param file The path to the edje file

src/lib/edje/edje_cache.c

@@ -1,6 +1,7 @@
 #include "edje_private.h"
 
-static Eina_Hash   *_edje_file_hash = NULL;
+Eina_Hash   *_edje_file_hash = NULL;
+
 static int          _edje_file_cache_size = 16;
 static Eina_List   *_edje_file_cache = NULL;
 

src/lib/edje/edje_load.c

@@ -234,6 +234,62 @@ edje_mmap_group_exists(Eina_File *f, const char *glob)
    return succeed;
 }
 
+typedef struct _Edje_File_Iterator Edje_File_Iterator;
+struct _Edje_File_Iterator
+{
+   Eina_Iterator iterator;
+
+   Eina_Iterator *it;
+};
+
+static Eina_Bool
+_edje_file_iterator_next(Eina_Iterator *it, void **data)
+{
+   Edje_File_Iterator *et = (void*) it;
+   Edje_File *edf = NULL;
+
+   if (!eina_iterator_next(et->it, (void**) &edf))
+     return EINA_FALSE;
+
+   *data = edf->f;
+   return EINA_TRUE;
+}
+
+static void *
+_edje_file_iterator_container(Eina_Iterator *it EINA_UNUSED)
+{
+   return NULL;
+}
+
+static void
+_edje_file_iterator_free(Eina_Iterator *it)
+{
+   Edje_File_Iterator *et = (void*) it;
+
+   EINA_MAGIC_SET(&et->iterator, 0);
+   eina_iterator_free(et->it);
+   free(et);
+}
+
+EAPI Eina_Iterator *
+edje_file_iterator_new(void)
+{
+   Edje_File_Iterator *it;
+
+   it = calloc(1, sizeof (Edje_File_Iterator));
+   if (!it) return NULL;
+
+   EINA_MAGIC_SET(&it->iterator, EINA_MAGIC_ITERATOR);
+   it->it = eina_hash_iterator_data_new(_edje_file_hash);
+
+   it->iterator.version = EINA_ITERATOR_VERSION;
+   it->iterator.next = _edje_file_iterator_next;
+   it->iterator.get_container = _edje_file_iterator_container;
+   it->iterator.free = _edje_file_iterator_free;
+
+   return &it->iterator;
+}
+
 EAPI Eina_Bool
 edje_file_group_exists(const char *file, const char *glob)
 {

src/lib/edje/edje_private.h

@@ -2129,6 +2129,8 @@ extern Eina_Mempool *_edje_real_part_state_mp;
 extern Eina_Cow *_edje_calc_params_map_cow;
 extern Eina_Cow *_edje_calc_params_physics_cow;
 
+extern Eina_Hash       *_edje_file_hash;
+
 EAPI extern Eina_Mempool *_emp_RECTANGLE;
 EAPI extern Eina_Mempool *_emp_TEXT;
 EAPI extern Eina_Mempool *_emp_IMAGE;