Convert junk filtering EPlugins to EExtensions.

We now have a proper junk mail filtering API.  All junk filtering
extensions must subclass EMailJunkFilter for user preferences and
availability testing, and implement the CamelJunkFilter interface
for the actual junk filtering and learning operations.

The bogofilter module should be feature-equivalent to its former
EPlugin.  The spamassassin module is far more complex.  It's nearly
feature-equivalent to its former EPlugin, but I ditched the spamd
respawning code since it seemed unnecessary for a mail client to
have to deal with.  If there's a huge outcry from users about it
I'll reluctantly put it back, but I don't expect one.

This gets us a step closer to killing off EConfig, and eventually
the EPlugin framework itself.

1 files changed, 82 insertions, 0 deletions

diff --git a/mail/e-mail-junk-filter.c b/mail/e-mail-junk-filter.c
new file mode 100644
index 0000000000..71128013ad
--- /dev/null
+++ b/mail/e-mail-junk-filter.c
@@ -0,0 +1,82 @@
+/*
+ * e-mail-junk-filter.c
+ *
+ * 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/>
+ *
+ */
+
+#include "e-mail-junk-filter.h"
+
+#include <mail/e-mail-session.h>
+
+G_DEFINE_ABSTRACT_TYPE (
+	EMailJunkFilter,
+	e_mail_junk_filter,
+	E_TYPE_EXTENSION)
+
+static void
+e_mail_junk_filter_class_init (EMailJunkFilterClass *class)
+{
+	EExtensionClass *extension_class;
+
+	extension_class = E_EXTENSION_CLASS (class);
+	extension_class->extensible_type = E_TYPE_MAIL_SESSION;
+}
+
+static void
+e_mail_junk_filter_init (EMailJunkFilter *junk_filter)
+{
+}
+
+gboolean
+e_mail_junk_filter_available (EMailJunkFilter *junk_filter)
+{
+	EMailJunkFilterClass *class;
+
+	g_return_val_if_fail (E_IS_MAIL_JUNK_FILTER (junk_filter), FALSE);
+
+	class = E_MAIL_JUNK_FILTER_GET_CLASS (junk_filter);
+	g_return_val_if_fail (class->available != NULL, FALSE);
+
+	return class->available (junk_filter);
+}
+
+GtkWidget *
+e_mail_junk_filter_new_config_widget (EMailJunkFilter *junk_filter)
+{
+	EMailJunkFilterClass *class;
+	GtkWidget *widget = NULL;
+
+	g_return_val_if_fail (E_IS_MAIL_JUNK_FILTER (junk_filter), NULL);
+
+	class = E_MAIL_JUNK_FILTER_GET_CLASS (junk_filter);
+
+	if (class->new_config_widget != NULL)
+		widget = class->new_config_widget (junk_filter);
+
+	return widget;
+}
+
+gint
+e_mail_junk_filter_compare (EMailJunkFilter *junk_filter_a,
+                            EMailJunkFilter *junk_filter_b)
+{
+	EMailJunkFilterClass *class_a;
+	EMailJunkFilterClass *class_b;
+
+	class_a = E_MAIL_JUNK_FILTER_GET_CLASS (junk_filter_a);
+	class_b = E_MAIL_JUNK_FILTER_GET_CLASS (junk_filter_b);
+
+	return g_utf8_collate (class_a->display_name, class_b->display_name);
+}