/*!
* \brief Parse _DiaObject from the given node
* Fill a GList* with objects which is to be put in a
* diagram or a group by the caller.
* Can be called recursively to allow groups in groups.
* This is only using the render branch of the file, if the
* object type is not registered with Dia. Otherwise the objects
* are just created from their type and properties.
* \ingroup DiaRenderScriptImport
*/
static GList*
read_items (xmlNodePtr startnode, DiaContext *ctx)
{
xmlNodePtr node;
GList *items = NULL;
for (node = startnode; node != NULL; node = node->next) {
if (xmlIsBlankNode(node))
continue;
if (node->type != XML_ELEMENT_NODE)
continue;
if (!xmlStrcmp(node->name, (const xmlChar *)"object")) {
xmlChar *sType = xmlGetProp(node, (const xmlChar *)"type");
const DiaObjectType *ot = object_get_type ((gchar *)sType);
xmlNodePtr props = NULL, render = NULL;
props = find_child_named (node, "properties");
render = find_child_named (node, "render");
if (ot && !ot->ops) {
GList *moreitems;
/* FIXME: 'render' is also the grouping element */
moreitems = read_items (render->children, ctx);
if (moreitems) {
DiaObject *group = group_create (moreitems);
/* apply group props, e.g. transform */
object_load_props (group, props, ctx);
/* group eats list */
items = g_list_append (items, group);
}
} else if (ot) {
Point startpoint = {0.0,0.0};
Handle *handle1,*handle2;
DiaObject *o;
o = ot->ops->create(&startpoint,
ot->default_user_data,
&handle1,&handle2);
if (o) {
object_load_props (o, props, ctx);
items = g_list_append (items, o);
}
} else if (render) {
DiaObject *o = _render_object (render, ctx);
if (o)
items = g_list_append (items, o);
} else {
g_debug ("DRS-Import: %s?", node->name);
}
} else {
g_debug ("DRS-Import: %s?", node->name);
}
}
return items;
}
/* *NOT A CALLBACK* --> Must be called by inherited class (see aadldata.c) */
void aadlbox_load(ObjectNode obj_node, int version, DiaContext *ctx,
Aadlbox *aadlbox)
{
AttributeNode attr;
DataNode composite, data;
Aadl_type type;
gchar *declaration;
Aadlport *port;
ConnectionPoint *connection;
int i, num;
attr = object_find_attribute(obj_node, "aadlbox_ports");
composite = attribute_first_data(attr);
num = attribute_num_data(attr);
for (i=0; i<num; i++) {
Point p;
attr = composite_find_attribute(composite, "point");
data_point(attribute_first_data(attr), &p, ctx);
attr = composite_find_attribute(composite, "port_type");
type = data_enum(attribute_first_data(attr), ctx);
attr = composite_find_attribute(composite, "port_declaration");
declaration = data_string(attribute_first_data(attr), ctx);
port = g_new0(Aadlport,1);
port->handle = g_new0(Handle,1);
port->type = type;
port->declaration = declaration;
aadlbox_add_port(aadlbox, &p, port);
composite = data_next(composite);
}
attr = object_find_attribute(obj_node, "aadlbox_connections");
num = attribute_num_data(attr);
data = attribute_first_data(attr);
for (i=0; i<num; i++) {
Point p;
data_point(data, &p, ctx);
connection = g_new0(ConnectionPoint,1);
aadlbox_add_connection(aadlbox, &p, connection);
data = data_next(data);
}
object_load_props(&aadlbox->element.object,obj_node, ctx);
}
/**
* 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,
DiaContext *ctx,
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, ctx);
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, ctx, 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 */
GList *inner_objects = read_objects(obj_node, objects_hash, ctx, NULL, unknown_objects_hash);
if (inner_objects) {
obj = group_create(inner_objects);
object_load_props(obj, obj_node, ctx);
list = g_list_append(list, obj);
}
} else {
/* silently ignore other nodes */
}
obj_node = obj_node->next;
}
return list;
}
/**
* @param filename the file to load from or NULL for default
* @param create_lazy if FALSE creates default objects for
* every known type. Otherwise default objects
* are created on demand
*
* Create all the default objects.
*/
gboolean
dia_object_defaults_load (const gchar *filename, gboolean create_lazy)
{
xmlDocPtr doc;
xmlNsPtr name_space;
ObjectNode obj_node, layer_node;
object_default_create_lazy = create_lazy;
if (!defaults_hash)
{
defaults_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
NULL, _obj_destroy);
if (!create_lazy)
object_registry_foreach (_obj_create, defaults_hash);
}
/* overload properties from file */
if (!filename)
{
gchar *default_filename = dia_config_filename("defaults.dia");
if (g_file_test(default_filename, G_FILE_TEST_EXISTS))
doc = xmlDiaParseFile(default_filename);
else
doc = NULL;
g_free (default_filename);
}
else
doc = xmlDiaParseFile(filename);
if (!doc)
return FALSE;
name_space = xmlSearchNs(doc, doc->xmlRootNode, (const xmlChar *)"dia");
if (xmlStrcmp (doc->xmlRootNode->name, (const xmlChar *)"diagram")
|| (name_space == NULL))
{
message_error(_("Error loading defaults '%s'.\n"
"Not a Dia diagram file."),
dia_message_filename(filename));
xmlFreeDoc (doc);
return FALSE;
}
layer_node = doc->xmlRootNode->xmlChildrenNode;
while (layer_node)
{
if ( !xmlIsBlankNode(layer_node)
&& 0 == xmlStrcmp(layer_node->name, (const xmlChar *)"layer"))
{
obj_node = layer_node->xmlChildrenNode;
while (obj_node)
{
if (!xmlIsBlankNode(obj_node)
&& 0 == xmlStrcmp(obj_node->name, (const xmlChar *)"object"))
{
char *typestr = (char *) xmlGetProp(obj_node, (const xmlChar *)"type");
char *version = (char *) xmlGetProp(obj_node, (const xmlChar *)"version");
if (typestr)
{
DiaObject *obj = g_hash_table_lookup (defaults_hash, typestr);
if (!obj)
{
if (!create_lazy)
g_warning ("Unknown object '%s' while reading '%s'",
typestr, filename);
else
{
DiaObjectType *type = object_get_type (typestr);
if (type)
obj = type->ops->load (
obj_node,
0,
filename);
if (obj)
g_hash_table_insert (defaults_hash,
obj->type->name, obj);
}
}
else
{
#if 0 /* lots of complaining about missing attributes */
object_load_props(obj, obj_node); /* leaks ?? */
#else
DiaObject *def_obj;
def_obj = obj->type->ops->load (
obj_node,
/*version ? atoi(version) : 0,*/0,
filename);
if (def_obj->ops->set_props)
{
object_copy_props (obj, def_obj, TRUE);
def_obj->ops->destroy (def_obj);
}
else
{
/* can't copy props */
g_hash_table_replace (defaults_hash,
def_obj->type->name, def_obj);
}
#endif
}
if (version)
xmlFree (version);
xmlFree (typestr);
}
}
obj_node = obj_node->next;
}
}
layer_node = layer_node->next;
}
xmlFreeDoc(doc);
return TRUE;
}
