helm/gtkmathview-bonobo/src/persist-file.c

   1 #include <bonobo.h>
   2 #include <gtk_math_view.h>
   3 #include <glib.h>
   4
   5
   6 static BonoboObjectClass *gtk_math_view_persist_file_parent_class;
   7
   8 static void load_implementation(PortableServer_Servant servant,const CORBA_char *path,Corba_Environment *ev);
   9
  10 static void finalize(GObject *object)
  11 {
  12         GtkMathViewPersistFile *file = GTK_MATH_VIEW_PERSIST_FILE(object);
  13
  14         if(file->math_view){
  15                 g_object_unref(file->html);
  16                 file->math_view = NULL;
  17         }
  18
  19         G_OBJECT_CLASS(gtk_math_view_persist_file_parent_class)->finalize (object);
  20 }
  21
  22 static Bonobo_Persist_ContentTypeList *
  23 get_content_types(BonoboPersist *persist,CORBA_Environment *ev)
  24 {
  25         return bonobo_persist_generate_content_types();
  26 }
  27
  28 static void
  29 gtk_math_view_persist_file_class_init(GtkMathViewFileClass *klass)
  30 {
  31         GObjectClass *object_class = G_OBJECT_CLASS(klass);
  32         BonoboPersistClass *persist_class = BONOBO_PERSIST_CLASS(klass);
  33         POA_Bonobo_PersistFile__epv *epv = &klass->epv;
  34
  35         gtk_math_view_persist_file_parent_class = g_type_class_peek_parent(klass);
  36
  37         epv->load = load_implementation;
  38         epv->save = save_implementation;
  39
  40         object_class->finalize = finalize;
  41         persist_class->get_content_types = get_content_types;
  42 }
  43
  44 GType
  45 gtk_math_view_persist_file_get_type(void)
  46 {
  47         static GType type = 0;
  48         if(!type){
  49                 GTypeInfo info = {
  50                         sizeof(GtkMathViewPresistFileClass),
  51                         (GBaseInitFunc) NULL,
  52                         (GBaseFinalizeFunc) NULL,
  53                         (GClassInitFunc) gtk_math_view_persist_file_class_init,
  54                         NULL,  /* class finalize */
  55                         NULL,  /* class_data */
  56                         sizeof(GtkMathViewPresistFile),
  57                         0,   /* n_preallocs */
  58                         (GInstanceInitFunc) NULL
  59                 };
  60
  61                 type = bonobo_type_unique(
  62                                 BONOBO_TYPE_PERSIST,
  63                                 POA_Bonobo_PersistFile__init,POA_Bonobo_PersistFile__fini,
  64                                 G_STRUCT_OFFSET(GtkMathViewPresistFileClass, epv),
  65                                 &info,"GtkMathViewPresistFile");
  66         }
  67         return type;
  68 }
  69
  70 BonoboObject *
  71 gtk_math_view_persist_file_new(GtkMathView *math_view)
  72 {
  73         BonoboObject *file;
  74
  75         file = g_object_new(gtk_math_view_persist_file_get_type(),NULL);
  76         bonobo_persist_construct(BONOBO_PRESIST(file), CONTROL_FACTORY_ID);
  77
  78         g_object_ref(math_view);
  79         GTK_MATH_VIEW_PRESIST_FILE (file) = math_view;
  80
  81         return file;
  82 }
  83
  84 static void
  85 load_implementation(const gchar *path,CORBA_Environment *ev)
  86 {
  87         gboolean result;
  88         g_assert(GTK_IS_MATH_VIEW(ev));
  89         result = gtk_math_view_load_uri((GtkMathView *) ev);
  90         if(!result){
  91                 CORBA_exception_set(ev,CORBA_USER_EXCEPTION,ex_Bonobo_Persist_WrongDataType,NULL);
  92                 return;
  93         }
  94         return ;
  95 }
  96
  97 static void
  98 save_implementation(const gchar *path,CORBA_Environment *ev)
  99 {
 100         bonobo_exception_set(ev,"save_exception");
 101         bonobo_exception_add_handler_str("save_exception",
 102                                           "Save option is not valid");
 103         return;
 104 }