git.maemo.org Git - modest/blob - src/widgets/modest-tny-stream-gtkhtml.c

   1 /* Copyright (c) 2006, Nokia Corporation
   2  * All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions are
   6  * met:
   7  *
   8  * * Redistributions of source code must retain the above copyright
   9  *   notice, this list of conditions and the following disclaimer.
  10  * * Redistributions in binary form must reproduce the above copyright
  11  *   notice, this list of conditions and the following disclaimer in the
  12  *   documentation and/or other materials provided with the distribution.
  13  * * Neither the name of the Nokia Corporation nor the names of its
  14  *   contributors may be used to endorse or promote products derived from
  15  *   this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  18  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  19  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  20  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
  21  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  22  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  23  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  24  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  25  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  26  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  27  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30
  31 /* modest-tny-stream-gtkhtml.c */
  32
  33 #include "modest-tny-stream-gtkhtml.h"
  34 #include <tny-stream.h>
  35 #include <gtkhtml/gtkhtml-stream.h>
  36 #include <gtkhtml/gtkhtml-search.h>
  37
  38 /* 'private'/'protected' functions */
  39 static void  modest_tny_stream_gtkhtml_class_init   (ModestTnyStreamGtkhtmlClass *klass);
  40 static void  modest_tny_stream_gtkhtml_init         (ModestTnyStreamGtkhtml *obj);
  41 static void  modest_tny_stream_gtkhtml_finalize     (GObject *obj);
  42
  43 static void  modest_tny_stream_gtkhml_iface_init (gpointer g_iface, gpointer iface_data);
  44
  45 /* list my signals */
  46 enum {
  47         /* MY_SIGNAL_1, */
  48         /* MY_SIGNAL_2, */
  49         LAST_SIGNAL
  50 };
  51
  52 typedef struct _ModestTnyStreamGtkhtmlPrivate ModestTnyStreamGtkhtmlPrivate;
  53 struct _ModestTnyStreamGtkhtmlPrivate {
  54         GtkHTMLStream *stream;
  55 };
  56 #define MODEST_TNY_STREAM_GTKHTML_GET_PRIVATE(o)      (G_TYPE_INSTANCE_GET_PRIVATE((o), \
  57                                                        MODEST_TYPE_TNY_STREAM_GTKHTML, \
  58                                                        ModestTnyStreamGtkhtmlPrivate))
  59 /* globals */
  60 static GObjectClass *parent_class = NULL;
  61
  62 /* uncomment the following if you have defined any signals */
  63 /* static guint signals[LAST_SIGNAL] = {0}; */
  64
  65 GType
  66 modest_tny_stream_gtkhtml_get_type (void)
  67 {
  68         static GType my_type = 0;
  69         if (!my_type) {
  70                 static const GTypeInfo my_info = {
  71                         sizeof(ModestTnyStreamGtkhtmlClass),
  72                         NULL,           /* base init */
  73                         NULL,           /* base finalize */
  74                         (GClassInitFunc) modest_tny_stream_gtkhtml_class_init,
  75                         NULL,           /* class finalize */
  76                         NULL,           /* class data */
  77                         sizeof(ModestTnyStreamGtkhtml),
  78                         1,              /* n_preallocs */
  79                         (GInstanceInitFunc) modest_tny_stream_gtkhtml_init,
  80                         NULL
  81                 };
  82
  83                 static const GInterfaceInfo iface_info = {
  84                         (GInterfaceInitFunc) modest_tny_stream_gtkhml_iface_init,
  85                         NULL,         /* interface_finalize */
  86                         NULL          /* interface_data */
  87                 };
  88
  89                 my_type = g_type_register_static (G_TYPE_OBJECT,
  90                                                   "ModestTnyStreamGtkhtml",
  91                                                   &my_info, 0);
  92
  93                 g_type_add_interface_static (my_type, TNY_TYPE_STREAM,
  94                                              &iface_info);
  95
  96         }
  97         return my_type;
  98 }
  99
 100 static void
 101 modest_tny_stream_gtkhtml_class_init (ModestTnyStreamGtkhtmlClass *klass)
 102 {
 103         GObjectClass *gobject_class;
 104         gobject_class = (GObjectClass*) klass;
 105
 106         parent_class            = g_type_class_peek_parent (klass);
 107         gobject_class->finalize = modest_tny_stream_gtkhtml_finalize;
 108
 109         g_type_class_add_private (gobject_class, sizeof(ModestTnyStreamGtkhtmlPrivate));
 110 }
 111
 112 static void
 113 modest_tny_stream_gtkhtml_init (ModestTnyStreamGtkhtml *obj)
 114 {
 115         ModestTnyStreamGtkhtmlPrivate *priv;
 116         priv = MODEST_TNY_STREAM_GTKHTML_GET_PRIVATE(obj);
 117
 118         priv->stream  = NULL;
 119 }
 120
 121 static void
 122 modest_tny_stream_gtkhtml_finalize (GObject *obj)
 123 {
 124         ModestTnyStreamGtkhtmlPrivate *priv;
 125
 126         priv = MODEST_TNY_STREAM_GTKHTML_GET_PRIVATE(obj);
 127         priv->stream = NULL;
 128 }
 129
 130 GObject*
 131 modest_tny_stream_gtkhtml_new (GtkHTMLStream *stream)
 132 {
 133         GObject *obj;
 134         ModestTnyStreamGtkhtmlPrivate *priv;
 135
 136         obj  = G_OBJECT(g_object_new(MODEST_TYPE_TNY_STREAM_GTKHTML, NULL));
 137         priv = MODEST_TNY_STREAM_GTKHTML_GET_PRIVATE(obj);
 138
 139         g_return_val_if_fail (stream, NULL);
 140
 141         priv->stream = stream;
 142
 143         return obj;
 144 }
 145
 146
 147 /* the rest are interface functions */
 148
 149
 150 static ssize_t
 151 gtkhtml_read (TnyStream *self, char *buffer, size_t n)
 152 {
 153         return -1; /* we cannot read */
 154 }
 155
 156
 157 static ssize_t
 158 gtkhtml_write (TnyStream *self, const char *buffer, size_t n)
 159 {
 160         ModestTnyStreamGtkhtmlPrivate *priv;
 161
 162         priv = MODEST_TNY_STREAM_GTKHTML_GET_PRIVATE(self);
 163
 164         if (!priv->stream) {
 165                 g_print ("modest: cannot write to closed stream\n");
 166                 return 0;
 167         }
 168
 169         if (n == 0 || !buffer)
 170                 return 0;
 171
 172         gtk_html_stream_write (priv->stream, buffer, n);
 173         return n; /* hmmm */
 174 }
 175
 176
 177 static gint
 178 gtkhtml_flush (TnyStream *self)
 179 {
 180         return 0;
 181 }
 182
 183
 184 static gint
 185 gtkhtml_close (TnyStream *self)
 186 {
 187         ModestTnyStreamGtkhtmlPrivate *priv;
 188         g_return_val_if_fail (self, 0);
 189         priv = MODEST_TNY_STREAM_GTKHTML_GET_PRIVATE(self);
 190
 191         gtk_html_stream_close   (priv->stream, GTK_HTML_STREAM_OK);
 192         priv->stream = NULL;
 193
 194         return 0;
 195 }
 196
 197
 198 static gboolean
 199 gtkhtml_is_eos (TnyStream *self)
 200 {
 201         return TRUE;
 202 }
 203
 204
 205
 206 static gint
 207 gtkhtml_reset (TnyStream *self)
 208 {
 209         return 0;
 210 }
 211
 212
 213 static ssize_t
 214 gtkhtml_write_to_stream (TnyStream *self, TnyStream *output)
 215 {
 216         return 0;
 217 }
 218
 219
 220 static void
 221 modest_tny_stream_gtkhml_iface_init (gpointer g_iface, gpointer iface_data)
 222 {
 223         TnyStreamIface *klass;
 224
 225         g_return_if_fail (g_iface);
 226
 227         klass = (TnyStreamIface*) g_iface;
 228
 229         klass->read_func            = gtkhtml_read;
 230         klass->write_func           = gtkhtml_write;
 231         klass->flush_func           = gtkhtml_flush;
 232         klass->close_func           = gtkhtml_close;
 233         klass->is_eos_func          = gtkhtml_is_eos;
 234         klass->reset_func           = gtkhtml_reset;
 235         klass->write_to_stream_func = gtkhtml_write_to_stream;
 236 }