2 * AT-SPI - Assistive Technology Service Provider Interface
3 * (Gnome Accessibility Project; http://developer.gnome.org/projects/gap) *
4 * Copyright 2001, 2002 Sun Microsystems Inc.,
5 * Copyright 2001, 2002 Ximian, Inc.
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
17 * You should have received a copy of the GNU Library General Public
18 * License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
23 /* streamablecontent.c : implements the StreamableContent interface */
27 #include <libspi/accessible.h>
28 #include <libspi/component.h>
29 #include <libspi/streamablecontent.h>
31 /* Our parent Gtk object type */
32 #define PARENT_TYPE SPI_TYPE_BASE
34 /* A pointer to our parent object class */
35 static GObjectClass *spi_streamable_parent_class;
37 #define SPI_CONTENT_STREAM_TYPE (spi_content_stream_get_type ())
38 #define SPI_CONTENT_STREAM(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), SPI_CONTENT_STREAM_TYPE, SpiContentStream))
39 #define SPI_CONTENT_STREAM_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), SPI_CONTENT_STREAM_TYPE, SpiContentStreamClass))
40 #define SPI_IS_CONTENT_STREAM(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), SPI_CONTENT_STREAM_TYPE))
41 #define SPI_IS_CONTENT_STREAM_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), SPI_CONTENT_STREAM_TYPE))
43 typedef struct _SpiContentStream SpiContentStream;
44 typedef struct _SpiContentStreamClass SpiContentStreamClass;
46 struct _SpiContentStream {
51 struct _SpiContentStreamClass {
52 BonoboObjectClass parent_class;
53 POA_Accessibility_ContentStream__epv epv;
56 GType spi_content_stream_get_type (void);
58 static SpiContentStream*
59 spi_content_stream_new (GIOChannel *gio)
61 SpiContentStream *new_stream = g_object_new (SPI_CONTENT_STREAM_TYPE, NULL);
62 new_stream->gio = gio;
67 spi_content_stream_dispose (GObject *o)
69 if (SPI_IS_CONTENT_STREAM (o))
71 SpiContentStream *stream = SPI_CONTENT_STREAM (o);
72 if (stream->gio) g_io_channel_unref (stream->gio);
77 impl_content_stream_seek (PortableServer_Servant servant,
78 const CORBA_long offset,
79 const Accessibility_ContentStream_SeekType whence,
80 CORBA_Environment *ev)
82 SpiContentStream *stream = SPI_CONTENT_STREAM (bonobo_object_from_servant(servant));
83 if (stream && stream->gio)
86 GSeekType seektype = G_SEEK_SET;
88 case Accessibility_ContentStream_SEEK_CURRENT:
89 seektype = G_SEEK_CUR;
91 case Accessibility_ContentStream_SEEK_END:
92 seektype = G_SEEK_END;
95 if (g_io_channel_seek_position (stream->gio, (gint64) offset,
96 seektype, &err) == G_IO_STATUS_NORMAL)
106 impl_content_stream_read (PortableServer_Servant servant,
107 const CORBA_long count,
108 Accessibility_ContentStream_iobuf** buffer,
109 CORBA_Environment *ev)
111 SpiContentStream *stream = SPI_CONTENT_STREAM (bonobo_object_from_servant(servant));
112 CORBA_long realcount = 0;
114 if (stream && stream->gio)
120 /* read the giochannel and determine the actual bytes read...*/
122 gbuf = g_malloc (count+1);
123 status = g_io_channel_read_chars (stream->gio, gbuf, count, &realcount, &err);
126 status = g_io_channel_read_to_end (stream->gio, &gbuf, &realcount, &err);
128 if (status == G_IO_STATUS_NORMAL || status == G_IO_STATUS_EOF)
130 *buffer = Bonobo_Stream_iobuf__alloc ();
131 CORBA_sequence_set_release (*buffer, TRUE);
133 (*buffer)->_buffer = CORBA_sequence_CORBA_octet_allocbuf (realcount);
134 (*buffer)->_length = realcount;
136 g_memmove ((*buffer)->_buffer, gbuf, realcount);
146 impl_content_stream_close (PortableServer_Servant servant,
147 CORBA_Environment *ev)
151 SpiContentStream *stream = SPI_CONTENT_STREAM (bonobo_object_from_servant(servant));
152 if (stream && stream->gio) {
153 status = g_io_channel_shutdown (stream->gio, TRUE, &err);
154 g_io_channel_unref (stream->gio);
156 if (err) g_free (err);
160 spi_content_stream_class_init (SpiContentStreamClass *klass)
162 POA_Accessibility_ContentStream__epv *epv = &klass->epv;
163 GObjectClass * object_class = (GObjectClass *) klass;
165 epv->seek = impl_content_stream_seek;
166 epv->read = impl_content_stream_read;
167 epv->close = impl_content_stream_close;
169 object_class->dispose = spi_content_stream_dispose;
174 spi_content_stream_init (SpiContentStream *stream)
179 BONOBO_TYPE_FUNC_FULL (SpiContentStream,
180 Accessibility_ContentStream,
184 static AtkStreamableContent *
185 get_streamable_from_servant (PortableServer_Servant servant)
187 SpiBase *object = SPI_BASE (bonobo_object_from_servant (servant));
188 g_return_val_if_fail (object != NULL, NULL);
189 g_return_val_if_fail (ATK_IS_STREAMABLE_CONTENT(object->gobj), NULL);
190 return ATK_STREAMABLE_CONTENT (object->gobj);
194 * CORBA Accessibility::StreamableContent::getContentTypes method implementation
196 static Accessibility_StringSeq*
197 impl_accessibility_streamable_get_content_types (PortableServer_Servant servant,
198 CORBA_Environment *ev)
200 Accessibility_StringSeq *typelist = Accessibility_StringSeq__alloc ();
201 AtkStreamableContent *streamable = get_streamable_from_servant (servant);
204 typelist->_length = typelist->_maximum = 0;
206 g_return_val_if_fail (streamable != NULL, typelist);
208 n_types = atk_streamable_content_get_n_mime_types (streamable);
212 typelist->_length = typelist->_maximum = n_types;
213 typelist->_buffer = Accessibility_StringSeq_allocbuf (n_types);
214 for (i = 0; i < n_types; ++i) {
215 const gchar *mimetype = atk_streamable_content_get_mime_type (streamable, i);
216 typelist->_buffer[i] = CORBA_string_dup (mimetype ? mimetype : "");
223 * CORBA Accessibility::StreamableContent::getContent method implementation
226 impl_accessibility_streamable_get_content (PortableServer_Servant servant,
227 const CORBA_char * content_type,
228 CORBA_Environment *ev)
230 Bonobo_Stream stream;
231 AtkStreamableContent *streamable = get_streamable_from_servant (servant);
234 g_return_val_if_fail (streamable != NULL, NULL);
236 gio = atk_streamable_content_get_stream (streamable, content_type);
238 stream = CORBA_OBJECT_NIL; /* deprecated,
239 * and it was never implemented,
240 * so don't bother fixing this
246 * CORBA Accessibility::StreamableContent::getStream method implementation
248 static Accessibility_ContentStream
249 impl_accessibility_streamable_get_stream (PortableServer_Servant servant,
250 const CORBA_char * content_type,
251 CORBA_Environment *ev)
253 SpiContentStream *stream;
254 AtkStreamableContent *streamable = get_streamable_from_servant (servant);
257 g_return_val_if_fail (streamable != NULL, NULL);
259 gio = atk_streamable_content_get_stream (streamable, content_type);
261 stream = spi_content_stream_new (gio);
263 return bonobo_object_dup_ref (BONOBO_OBJREF (stream), ev);
267 * CORBA Accessibility::StreamableContent::getURI method implementation
270 impl_accessibility_streamable_get_uri (PortableServer_Servant servant,
271 const CORBA_char * content_type,
272 CORBA_Environment *ev)
275 AtkStreamableContent *streamable = get_streamable_from_servant (servant);
277 g_return_val_if_fail (streamable != NULL, NULL);
279 uri = atk_streamable_content_get_uri (streamable, content_type);
281 return (uri != NULL ? CORBA_string_dup (uri) : CORBA_string_dup (""));
285 spi_streamable_class_init (SpiStreamableClass *klass)
287 POA_Accessibility_StreamableContent__epv *epv = &klass->epv;
288 spi_streamable_parent_class = g_type_class_peek_parent (klass);
290 epv->getContentTypes = impl_accessibility_streamable_get_content_types;
291 epv->getContent = impl_accessibility_streamable_get_content;
292 epv->getStream = impl_accessibility_streamable_get_stream;
293 epv->getURI = impl_accessibility_streamable_get_uri;
297 spi_streamable_init (SpiStreamable *streamable)
303 spi_streamable_interface_new (AtkObject *o)
305 SpiStreamable *retval = g_object_new (SPI_STREAMABLE_TYPE, NULL);
307 spi_base_construct (SPI_BASE (retval), G_OBJECT(o));
312 BONOBO_TYPE_FUNC_FULL (SpiStreamable,
313 Accessibility_StreamableContent,