/*
* This program 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 of the License, or (at your option) version 3.
*
* This program 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 the program; if not, see <http://www.gnu.org/licenses/>
*
*
* Authors:
* Michael Zucchi <notzed@ximian.com>
*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <string.h>
#include <stdlib.h>
#include <glib.h>
#include "em-format-hook.h"
#include <glib/gi18n.h>
/* class name -> klass map for EMFormat and subclasses */
static GHashTable *emfh_types;
/* ********************************************************************** */
/* Mail formatter handler plugin */
/*
<hook class="org.gnome.evolution.mail.format:1.0">
<group id="EMFormatHTML">
<item flags="inline,inline_disposition"
mime_type="text/vcard"
format="format_vcard"/>
</group>
</hook>
*/
static gpointer emfh_parent_class;
#define emfh ((EMFormatHook *)eph)
#define d(x)
static const EPluginHookTargetKey emfh_flag_map[] = {
{ "inline", EM_FORMAT_HANDLER_INLINE },
{ "inline_disposition", EM_FORMAT_HANDLER_INLINE_DISPOSITION },
{ NULL }
};
static void
emfh_format_format (EMFormat *md,
CamelStream *stream,
CamelMimePart *part,
const EMFormatHandler *info,
gboolean is_fallback)
{
struct _EMFormatHookItem *item = (EMFormatHookItem *)info;
if (item->hook->hook.plugin->enabled) {
EMFormatHookTarget target = {
md, stream, part, item
};
e_plugin_invoke(item->hook->hook.plugin, item->format, &target);
} else if (info->old) {
info->old->handler(md, stream, part, info->old, FALSE);
}
}
static void
emfh_free_item(struct _EMFormatHookItem *item)
{
/* FIXME: remove from formatter class */
g_free(item->handler.mime_type);
g_free(item->format);
g_free(item);
}
static void
emfh_free_group(struct _EMFormatHookGroup *group)
{
g_slist_foreach(group->items, (GFunc)emfh_free_item, NULL);
g_slist_free(group->items);
g_free(group->id);
g_free(group);
}
static struct _EMFormatHookItem *
emfh_construct_item(EPluginHook *eph, EMFormatHookGroup *group, xmlNodePtr root)
{
struct _EMFormatHookItem *item;
d(printf(" loading group item\n"));
item = g_malloc0(sizeof(*item));
item->handler.mime_type = e_plugin_xml_prop(root, "mime_type");
item->handler.flags = e_plugin_hook_mask(root, emfh_flag_map, "flags");
item->format = e_plugin_xml_prop(root, "format");
item->handler.handler = emfh_format_format;
item->hook = emfh;
if (item->handler.mime_type == NULL || item->format == NULL)
goto error;
d(printf(" type='%s' format='%s'\n", item->handler.mime_type, item->format));
return item;
error:
d(printf("error!\n"));
emfh_free_item(item);
return NULL;
}
static struct _EMFormatHookGroup *
emfh_construct_group(EPluginHook *eph, xmlNodePtr root)
{
struct _EMFormatHookGroup *group;
xmlNodePtr node;
d(printf(" loading group\n"));
group = g_malloc0(sizeof(*group));
group->id = e_plugin_xml_prop(root, "id");
if (group->id == NULL)
goto error;
node = root->children;
while (node) {
if (0 == strcmp((gchar *)node->name, "item")) {
struct _EMFormatHookItem *item;
item = emfh_construct_item(eph, group, node);
if (item)
group->items = g_slist_append(group->items, item);
}
node = node->next;
}
return group;
error:
emfh_free_group(group);
return NULL;
}
static gint
emfh_construct(EPluginHook *eph, EPlugin *ep, xmlNodePtr root)
{
xmlNodePtr node;
d(printf("loading format hook\n"));
if (((EPluginHookClass *)emfh_parent_class)->construct(eph, ep, root) == -1)
return -1;
node = root->children;
while (node) {
if (strcmp((gchar *)node->name, "group") == 0) {
struct _EMFormatHookGroup *group;
group = emfh_construct_group(eph, node);
if (group) {
EMFormatClass *klass;
if (emfh_types
&& (klass = g_hash_table_lookup(emfh_types, group->id))) {
GSList *l = group->items;
for (;l;l=g_slist_next(l)) {
EMFormatHookItem *item = l->data;
/* TODO: only add handlers if enabled? */
/* Well, disabling is handled by the callback,
* if we leave as is, then we can enable the
* plugin after startup and it will start
* working automagically */
em_format_class_add_handler(klass, &item->handler);
}
}
/* We don't actually need to keep this around once its set on the class */
emfh->groups = g_slist_append(emfh->groups, group);
}
}
node = node->next;
}
eph->plugin = ep;
/* Load the plugin as it does a few thing in the formatter thread. */
((EPluginClass *)G_OBJECT_GET_CLASS(ep))->enable (ep, 1);
return 0;
}
static void
emfh_enable(EPluginHook *eph, gint state)
{
GSList *g, *l;
EMFormatClass *klass;
g = emfh->groups;
if (emfh_types == NULL)
return;
for (;g;g=g_slist_next(g)) {
struct _EMFormatHookGroup *group = g->data;
klass = g_hash_table_lookup(emfh_types, group->id);
for (l=group->items;l;l=g_slist_next(l)) {
EMFormatHookItem *item = l->data;
if (state)
em_format_class_add_handler(klass, &item->handler);
else
em_format_class_remove_handler(klass, &item->handler);
}
}
}
static void
emfh_finalise(GObject *o)
{
EPluginHook *eph = (EPluginHook *)o;
g_slist_foreach(emfh->groups, (GFunc)emfh_free_group, NULL);
g_slist_free(emfh->groups);
((GObjectClass *)emfh_parent_class)->finalize(o);
}
static void
emfh_class_init(EPluginHookClass *klass)
{
((GObjectClass *)klass)->finalize = emfh_finalise;
klass->construct = emfh_construct;
klass->enable = emfh_enable;
klass->id = "org.gnome.evolution.mail.format:1.0";
}
GType
em_format_hook_get_type(void)
{
static GType type = 0;
if (!type) {
static const GTypeInfo info = {
sizeof(EMFormatHookClass), NULL, NULL, (GClassInitFunc) emfh_class_init, NULL, NULL,
sizeof(EMFormatHook), 0, (GInstanceInitFunc) NULL,
};
emfh_parent_class = g_type_class_ref(e_plugin_hook_get_type());
type = g_type_register_static(e_plugin_hook_get_type(), "EMFormatHook", &info, 0);
}
return type;
}
void em_format_hook_register_type(GType type)
{
EMFormatClass *klass;
if (emfh_types == NULL)
emfh_types = g_hash_table_new(g_str_hash, g_str_equal);
d(printf("registering formatter type '%s'\n", g_type_name(type)));
klass = g_type_class_ref(type);
g_hash_table_insert(emfh_types, (gpointer)g_type_name(type), klass);
}
