static void
ungroup_objects_free(struct UngroupObjectsChange *change)
{
DEBUG_PRINTF(("ungroup_objects_free()\n"));
if (change->applied) {
group_destroy_shallow(change->group);
change->group = NULL;
change->obj_list = NULL;
}
}
static void
group_objects_free(struct GroupObjectsChange *change)
{
DEBUG_PRINTF(("group_objects_free()\n"));
if (!change->applied) {
group_destroy_shallow(change->group);
change->group = NULL;
change->obj_list = NULL;
/** Leak here? */
}
g_list_free(change->orig_list);
}
/**
* Recursive function to read objects from a specific level in the xml.
*
* Nowadays there are quite a few of them :
* - Layers : a diagram may have different layers, but this function does *not*
* add the created objects to them as it does not know on which nesting level it
* is called. So the topmost caller must add the returned objects to the layer.
* - Groups : groups in itself can have an arbitrary nesting level including other
* groups or objects or both of them. A group not containing any objects is by
* definition useless. So it is not created. This is to avoid trouble with some older
* diagrams which happen to be saved with empty groups.
* - Parents : if the parent relations would have been there from the beginning of
* Dias file format they probably would have been added as nesting level
* themselves. But to maintain forward compatibility (allow to let older versions
* of Dia to see as much as possible) they were added all on the same level and
* the parent child relation is reconstructed from additional attributes.
*/
static GList *
read_objects(xmlNodePtr objects,
GHashTable *objects_hash,const char *filename, DiaObject *parent,
GHashTable *unknown_objects_hash)
{
GList *list;
DiaObjectType *type;
DiaObject *obj;
ObjectNode obj_node;
char *typestr;
char *versionstr;
char *id;
int version;
xmlNodePtr child_node;
list = NULL;
obj_node = objects->xmlChildrenNode;
while ( obj_node != NULL) {
if (xmlIsBlankNode(obj_node)) {
obj_node = obj_node->next;
continue;
}
if (!obj_node) break;
if (xmlStrcmp(obj_node->name, (const xmlChar *)"object")==0) {
typestr = (char *) xmlGetProp(obj_node, (const xmlChar *)"type");
versionstr = (char *) xmlGetProp(obj_node, (const xmlChar *)"version");
id = (char *) xmlGetProp(obj_node, (const xmlChar *)"id");
version = 0;
if (versionstr != NULL) {
version = atoi(versionstr);
xmlFree(versionstr);
}
type = object_get_type((char *)typestr);
if (!type) {
if (g_utf8_validate (typestr, -1, NULL) &&
NULL == g_hash_table_lookup(unknown_objects_hash, typestr))
g_hash_table_insert(unknown_objects_hash, g_strdup(typestr), 0);
}
else
{
obj = type->ops->load(obj_node, version, filename);
list = g_list_append(list, obj);
if (parent)
{
obj->parent = parent;
parent->children = g_list_append(parent->children, obj);
}
g_hash_table_insert(objects_hash, g_strdup((char *)id), obj);
child_node = obj_node->children;
while(child_node)
{
if (xmlStrcmp(child_node->name, (const xmlChar *)"children") == 0)
{
GList *children_read = read_objects(child_node, objects_hash, filename, obj, unknown_objects_hash);
list = g_list_concat(list, children_read);
break;
}
child_node = child_node->next;
}
}
if (typestr) xmlFree(typestr);
if (id) xmlFree (id);
} else if (xmlStrcmp(obj_node->name, (const xmlChar *)"group")==0
&& obj_node->children) {
/* don't create empty groups */
obj = group_create(read_objects(obj_node, objects_hash, filename, NULL, unknown_objects_hash));
#ifdef USE_NEWGROUP
/* Old group objects had objects recursively inside them. Since
* objects are now done with parenting, we need to extract those objects,
* make a newgroup object, set parent-child relationships, and add
* all of them to the diagram.
*/
{
DiaObject *newgroup;
GList *objects;
Point lower_right;
type = object_get_type("Misc - NewGroup");
lower_right = obj->position;
newgroup = type->ops->create(&lower_right,
NULL,
NULL,
NULL);
list = g_list_append(list, newgroup);
for (objects = group_objects(obj); objects != NULL; objects = g_list_next(objects)) {
DiaObject *subobj = (DiaObject *) objects->data;
list = g_list_append(list, subobj);
subobj->parent = newgroup;
newgroup->children = g_list_append(newgroup->children, subobj);
if (subobj->bounding_box.right > lower_right.x) {
lower_right.x = subobj->bounding_box.right;
}
if (subobj->bounding_box.bottom > lower_right.y) {
lower_right.y = subobj->bounding_box.bottom;
}
}
newgroup->ops->move_handle(newgroup, newgroup->handles[7],
&lower_right, NULL,
HANDLE_MOVE_CREATE_FINAL, 0);
/* We've used the info from the old group, destroy it */
group_destroy_shallow(obj);
}
#else
list = g_list_append(list, obj);
#endif
} else {
/* silently ignore other nodes */
}
obj_node = obj_node->next;
}
return list;
}
