--- /dev/null
+/* This file is part of GtkMathView-Bonobo, a Bonobo wrapper for GtkMathView.
+ * Copyright (C) 2003 Luca Padovani <lpadovan@cs.unibo.it>
+ * Pouria Masoudi <pmasoudi@cs.unibo.it>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * For more information, please visit the project's home page
+ * http://helm.cs.unibo.it/gtkmathview-bonobo
+ * or send an email to <lpadovan@cs.unibo.it>
+ */
+
+#include <config.h>
+
+#include <bonobo.h>
+#include <gtkmathview.h>
+
+#include "persist-stream.h"
+#include "control-factory.h"
+
+#define DEBUG0
+
+static BonoboObjectClass *gtk_math_view_persist_stream_parent_class;
+
+static void load_implementation(PortableServer_Servant servant,
+ const Bonobo_Stream stream,
+ const CORBA_char *type,
+ CORBA_Environment *ev);
+
+static void save_implementation(PortableServer_Servant servant,
+ const Bonobo_Stream stream,
+ const CORBA_char *type,
+ CORBA_Environment *ev);
+
+static void finalize(GObject *object)
+{
+ GtkMathViewPersistStream *stream = GTK_MATH_VIEW_PERSIST_STREAM(object);
+
+ if (stream->math_view != NULL)
+ {
+ g_object_unref(stream->math_view);
+ stream->math_view = NULL;
+ }
+
+ G_OBJECT_CLASS(gtk_math_view_persist_stream_parent_class)->finalize(object);
+}
+
+static Bonobo_Persist_ContentTypeList *
+get_content_types(BonoboPersist *persist,CORBA_Environment *ev)
+{
+ return bonobo_persist_generate_content_types(2, "application/mathml+xml", "text/mathml");
+}
+
+static void
+gtk_math_view_persist_stream_class_init(GtkMathViewPersistStreamClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS(klass);
+ BonoboPersistClass *persist_class = BONOBO_PERSIST_CLASS(klass);
+ POA_Bonobo_PersistStream__epv *epv = &klass->epv;
+
+#ifdef DEBUG
+ printf("persist stream class init\n");
+#endif
+ gtk_math_view_persist_stream_parent_class = g_type_class_peek_parent(klass);
+
+ epv->load = load_implementation;
+ epv->save = save_implementation;
+
+ object_class->finalize = finalize;
+ persist_class->get_content_types = get_content_types;
+}
+
+GType
+gtk_math_view_persist_stream_get_type(void)
+{
+ static GType type = 0;
+#ifdef DEBUG
+ printf("persist stream get type\n");
+#endif
+ if (!type)
+ {
+ GTypeInfo info =
+ {
+ sizeof(GtkMathViewPersistStreamClass),
+ (GBaseInitFunc) NULL,
+ (GBaseFinalizeFunc) NULL,
+ (GClassInitFunc) gtk_math_view_persist_stream_class_init,
+ NULL, /*class finalize */
+ NULL, /*class data */
+ sizeof(GtkMathViewPersistStream),
+ 0, /* n_preallocs */
+ (GInstanceInitFunc) NULL
+ };
+
+ type = bonobo_type_unique(BONOBO_TYPE_PERSIST,
+ POA_Bonobo_PersistStream__init,POA_Bonobo_PersistStream__fini,
+ G_STRUCT_OFFSET(GtkMathViewPersistStreamClass,epv),
+ &info,"GtkMathViewPersistStream");
+ }
+
+ return type;
+}
+
+BonoboObject *
+gtk_math_view_persist_stream_new(GtkMathView *math_view)
+{
+ BonoboObject *stream;
+
+#ifdef DEBUG
+ printf("persist stream new\n");
+#endif
+ stream = g_object_new(gtk_math_view_persist_stream_get_type(),NULL);
+ bonobo_persist_construct(BONOBO_PERSIST(stream),CONTROL_FACTORY_ID);
+
+ g_object_ref(math_view);
+ GTK_MATH_VIEW_PERSIST_STREAM(stream)->math_view = math_view;
+
+ return stream;
+}
+
+static FILE*
+create_tmp_file(GtkMathViewPersistStream *persist)
+{
+ FILE *tmpfile;
+ int fd;
+
+ persist->tmp_path_name = g_strconcat(g_get_tmp_dir(), "/gmvXXXXXX", NULL);
+ if ((fd = mkstemp(persist->tmp_path_name)) < 0)
+ {
+ g_free(persist->tmp_path_name),
+ persist->tmp_path_name = NULL;
+ return NULL;
+ }
+
+ tmpfile = fdopen(fd, "w");
+ if(!tmpfile)
+ {
+ close(fd);
+ return NULL;
+ }
+
+ return tmpfile;
+}
+
+
+static void
+load_implementation(PortableServer_Servant servant,
+ Bonobo_PersistStream stream,
+ const CORBA_char *type,
+ CORBA_Environment *ev)
+{
+ GtkMathViewPersistStream *persist = GTK_MATH_VIEW_PERSIST_STREAM (bonobo_object_from_servant (servant));
+ Bonobo_Stream_iobuf *buffer;
+ GtkMathViewPersistStream *handle;
+ CORBA_long len_read;
+ gboolean result;
+ FILE *tmpfile;
+
+#ifdef DEBUG
+ printf("persist stream loading\n");
+#endif
+
+ if (strcmp (type, "application/mathml+xml") != 0)
+ {
+ CORBA_exception_set (ev, CORBA_USER_EXCEPTION,
+ ex_Bonobo_Persist_WrongDataType, NULL);
+ return;
+ }
+
+ tmpfile = create_tmp_file(persist);
+ do
+ {
+ Bonobo_Stream_read (stream, 4096, &buffer, ev);
+ if (ev->_major != CORBA_NO_EXCEPTION)
+ goto clean;
+
+ len_read = buffer->_length;
+
+ if (buffer->_buffer && len_read)
+ if (fwrite(buffer->_buffer, 1, len_read, tmpfile) != len_read)
+ {
+ CORBA_free (buffer);
+ goto clean;
+ }
+
+ CORBA_free (buffer);
+ } while (len_read > 0);
+
+ fclose(tmpfile);
+
+ result = gtk_math_view_load_uri(persist->math_view,persist->tmp_path_name);
+ if(!result)
+ {
+ CORBA_exception_set(ev,CORBA_USER_EXCEPTION,ex_Bonobo_Persist_WrongDataType,NULL);
+ }
+ return ;
+
+ clean:
+ fclose (tmpfile);
+ return;
+}
+
+static void
+save_implementation(PortableServer_Servant servant,const Bonobo_Stream stream,const CORBA_char *type,CORBA_Environment *ev)
+{
+ bonobo_exception_set(ev,"save_exception");
+ bonobo_exception_add_handler_str("save_exception",
+ "Save option is not valid");
+ return;
+}
projects / helm.git / blobdiff