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-rw-r--r--libemail-utils/e-signature-list.c498
1 files changed, 498 insertions, 0 deletions
diff --git a/libemail-utils/e-signature-list.c b/libemail-utils/e-signature-list.c
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+++ b/libemail-utils/e-signature-list.c
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+/*
+ *
+ * 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:
+ * Jeffrey Stedfast <fejj@ximian.com>
+ *
+ * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "e-signature-list.h"
+
+#include <string.h>
+
+#include <libedataserver/e-uid.h>
+
+struct _ESignatureListPrivate {
+ GConfClient *gconf;
+ guint notify_id;
+ gboolean resave;
+};
+
+enum {
+ SIGNATURE_ADDED,
+ SIGNATURE_CHANGED,
+ SIGNATURE_REMOVED,
+ LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL] = { 0 };
+
+G_DEFINE_TYPE (
+ ESignatureList,
+ e_signature_list,
+ E_TYPE_LIST)
+
+static void
+e_signature_list_dispose (GObject *object)
+{
+ ESignatureList *list = (ESignatureList *) object;
+
+ if (list->priv->gconf) {
+ if (list->priv->notify_id != 0)
+ gconf_client_notify_remove (
+ list->priv->gconf, list->priv->notify_id);
+ g_object_unref (list->priv->gconf);
+ list->priv->gconf = NULL;
+ }
+
+ /* Chain up to parent's dispose() method. */
+ G_OBJECT_CLASS (e_signature_list_parent_class)->dispose (object);
+}
+
+static void
+e_signature_list_class_init (ESignatureListClass *class)
+{
+ GObjectClass *object_class;
+
+ g_type_class_add_private (class, sizeof (ESignatureListPrivate));
+
+ object_class = G_OBJECT_CLASS (class);
+ object_class->dispose = e_signature_list_dispose;
+
+ signals[SIGNATURE_ADDED] = g_signal_new (
+ "signature-added",
+ G_OBJECT_CLASS_TYPE (object_class),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (ESignatureListClass, signature_added),
+ NULL, NULL,
+ g_cclosure_marshal_VOID__OBJECT,
+ G_TYPE_NONE, 1,
+ E_TYPE_SIGNATURE);
+
+ signals[SIGNATURE_CHANGED] = g_signal_new (
+ "signature-changed",
+ G_OBJECT_CLASS_TYPE (object_class),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (ESignatureListClass, signature_changed),
+ NULL, NULL,
+ g_cclosure_marshal_VOID__OBJECT,
+ G_TYPE_NONE, 1,
+ E_TYPE_SIGNATURE);
+
+ signals[SIGNATURE_REMOVED] = g_signal_new (
+ "signature-removed",
+ G_OBJECT_CLASS_TYPE (object_class),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (ESignatureListClass, signature_removed),
+ NULL, NULL,
+ g_cclosure_marshal_VOID__OBJECT,
+ G_TYPE_NONE, 1,
+ E_TYPE_SIGNATURE);
+}
+
+static void
+e_signature_list_init (ESignatureList *signature_list)
+{
+ signature_list->priv = G_TYPE_INSTANCE_GET_PRIVATE (
+ signature_list, E_TYPE_SIGNATURE_LIST, ESignatureListPrivate);
+}
+
+static GSList *
+add_autogen (ESignatureList *list,
+ GSList *new_sigs)
+{
+ ESignature *autogen;
+
+ autogen = e_signature_new ();
+ e_signature_set_autogenerated (autogen, TRUE);
+
+ e_list_append (E_LIST (list), autogen);
+
+ return g_slist_prepend (new_sigs, autogen);
+}
+
+static void
+gconf_signatures_changed (GConfClient *client,
+ guint cnxn_id,
+ GConfEntry *entry,
+ gpointer user_data)
+{
+ ESignatureList *signature_list = user_data;
+ GSList *list, *l, *n, *new_sigs = NULL;
+ gboolean have_autogen = FALSE;
+ gboolean resave = FALSE;
+ ESignature *signature;
+ EList *old_sigs;
+ EIterator *iter;
+ gboolean found;
+ gchar *uid;
+
+ old_sigs = e_list_duplicate (E_LIST (signature_list));
+
+ list = gconf_client_get_list (
+ client, "/apps/evolution/mail/signatures",
+ GCONF_VALUE_STRING, NULL);
+ for (l = list; l; l = l->next) {
+ found = FALSE;
+ if ((uid = e_signature_uid_from_xml (l->data))) {
+ /* See if this is an existing signature */
+ iter = e_list_get_iterator (old_sigs);
+ while (e_iterator_is_valid (iter)) {
+ const gchar *signature_uid;
+
+ signature = (ESignature *) e_iterator_get (iter);
+ signature_uid = e_signature_get_uid (signature);
+ if (!strcmp (signature_uid, uid)) {
+ /* The signature still exists, so remove
+ * it from "old_sigs" and update it. */
+ found = TRUE;
+ e_iterator_delete (iter);
+ if (e_signature_set_from_xml (
+ signature, l->data))
+ g_signal_emit (
+ signature_list,
+ signals[SIGNATURE_CHANGED],
+ 0, signature);
+
+ have_autogen |=
+ e_signature_get_autogenerated (
+ signature);
+
+ break;
+ }
+
+ e_iterator_next (iter);
+ }
+
+ g_object_unref (iter);
+ }
+
+ if (!found) {
+ resave = TRUE;
+
+ /* Must be a new signature */
+ signature = e_signature_new_from_xml (l->data);
+ if (signature) {
+ have_autogen |=
+ e_signature_get_autogenerated (signature);
+
+ e_list_append (E_LIST (signature_list), signature);
+ new_sigs = g_slist_prepend (new_sigs, signature);
+ }
+ }
+
+ g_free (uid);
+ }
+
+ g_slist_foreach (list, (GFunc) g_free, NULL);
+ g_slist_free (list);
+
+ if (!have_autogen) {
+ new_sigs = add_autogen (signature_list, new_sigs);
+ resave = TRUE;
+ }
+
+ if (new_sigs != NULL) {
+ /* Now emit signals for each added signature. */
+ l = g_slist_reverse (new_sigs);
+ while (l != NULL) {
+ n = l->next;
+ signature = l->data;
+ g_signal_emit (
+ signature_list,
+ signals[SIGNATURE_ADDED], 0,
+ signature);
+ g_object_unref (signature);
+ g_slist_free_1 (l);
+ l = n;
+ }
+ }
+
+ /* Anything left in old_sigs must have been deleted */
+ iter = e_list_get_iterator (old_sigs);
+ while (e_iterator_is_valid (iter)) {
+ signature = (ESignature *) e_iterator_get (iter);
+ e_list_remove (E_LIST (signature_list), signature);
+ g_signal_emit (
+ signature_list, signals[SIGNATURE_REMOVED], 0,
+ signature);
+ e_iterator_next (iter);
+ }
+
+ g_object_unref (iter);
+ g_object_unref (old_sigs);
+
+ signature_list->priv->resave = resave;
+}
+
+static gpointer
+copy_func (gconstpointer data,
+ gpointer closure)
+{
+ GObject *object = (GObject *) data;
+
+ g_object_ref (object);
+
+ return object;
+}
+
+static void
+free_func (gpointer data,
+ gpointer closure)
+{
+ g_object_unref (data);
+}
+
+/**
+ * e_signature_list_new:
+ *
+ * Reads the list of signaturess from @gconf and listens for changes.
+ * Will emit #signature_added, #signature_changed, and #signature_removed
+ * signals according to notifications from GConf.
+ *
+ * You can modify the list using e_list_append(), e_list_remove(), and
+ * e_iterator_delete(). After adding, removing, or changing accounts,
+ * you must call e_signature_list_save() to push the changes back to
+ * GConf.
+ *
+ * Return value: the list of signatures
+ **/
+ESignatureList *
+e_signature_list_new (void)
+{
+ ESignatureList *signature_list;
+ GConfClient *client;
+
+ signature_list = g_object_new (E_TYPE_SIGNATURE_LIST, NULL);
+
+ client = gconf_client_get_default ();
+ e_signature_list_construct (signature_list, client);
+ g_object_unref (client);
+
+ return signature_list;
+}
+
+void
+e_signature_list_construct (ESignatureList *signature_list,
+ GConfClient *gconf)
+{
+ g_return_if_fail (GCONF_IS_CLIENT (gconf));
+
+ e_list_construct (E_LIST (signature_list), copy_func, free_func, NULL);
+ signature_list->priv->gconf = gconf;
+ g_object_ref (gconf);
+
+ gconf_client_add_dir (signature_list->priv->gconf,
+ "/apps/evolution/mail/signatures",
+ GCONF_CLIENT_PRELOAD_ONELEVEL, NULL);
+
+ signature_list->priv->notify_id =
+ gconf_client_notify_add (signature_list->priv->gconf,
+ "/apps/evolution/mail/signatures",
+ gconf_signatures_changed, signature_list,
+ NULL, NULL);
+
+ gconf_signatures_changed (signature_list->priv->gconf,
+ signature_list->priv->notify_id,
+ NULL, signature_list);
+
+ if (signature_list->priv->resave) {
+ e_signature_list_save (signature_list);
+ signature_list->priv->resave = FALSE;
+ }
+}
+
+/**
+ * e_signature_list_save:
+ * @signature_list: an #ESignatureList
+ *
+ * Saves @signature_list to GConf. Signals will be emitted for changes.
+ **/
+void
+e_signature_list_save (ESignatureList *signature_list)
+{
+ GSList *list = NULL;
+ ESignature *signature;
+ EIterator *iter;
+ gchar *xmlbuf;
+
+ for (iter = e_list_get_iterator (E_LIST (signature_list));
+ e_iterator_is_valid (iter);
+ e_iterator_next (iter)) {
+ signature = (ESignature *) e_iterator_get (iter);
+
+ if ((xmlbuf = e_signature_to_xml (signature)))
+ list = g_slist_append (list, xmlbuf);
+ }
+
+ g_object_unref (iter);
+
+ gconf_client_set_list (signature_list->priv->gconf,
+ "/apps/evolution/mail/signatures",
+ GCONF_VALUE_STRING, list, NULL);
+
+ while (list) {
+ g_free (list->data);
+ list = g_slist_remove (list, list->data);
+ }
+
+ gconf_client_suggest_sync (signature_list->priv->gconf, NULL);
+}
+
+/**
+ * e_signature_list_add:
+ * @signature_list: signature list
+ * @signature: signature to add
+ *
+ * Add an signature to the signature list. Will emit the signature-changed
+ * event.
+ **/
+void
+e_signature_list_add (ESignatureList *signature_list,
+ ESignature *signature)
+{
+ e_list_append ((EList *) signature_list, signature);
+ g_signal_emit (signature_list, signals[SIGNATURE_ADDED], 0, signature);
+}
+
+/**
+ * e_signature_list_change:
+ * @signature_list: signature list
+ * @signature: signature to change
+ *
+ * Signal that the details of an signature have changed.
+ **/
+void
+e_signature_list_change (ESignatureList *signature_list,
+ ESignature *signature)
+{
+ /* maybe the signature should do this itself ... */
+ g_signal_emit (signature_list, signals[SIGNATURE_CHANGED], 0, signature);
+}
+
+/**
+ * e_signature_list_remove:
+ * @signature_list: signature list
+ * @signature: signature
+ *
+ * Remove an signature from the signature list, and emit the
+ * signature-removed signal. If the signature was the default signature,
+ * then reset the default to the first signature.
+ **/
+void
+e_signature_list_remove (ESignatureList *signature_list,
+ ESignature *signature)
+{
+ /* not sure if need to ref but no harm */
+ g_object_ref (signature);
+ e_list_remove ((EList *) signature_list, signature);
+ g_signal_emit (signature_list, signals[SIGNATURE_REMOVED], 0, signature);
+ g_object_unref (signature);
+}
+
+/**
+ * e_signature_list_find_by_name:
+ * @signature_list: an #ESignatureList
+ * @name: the signature name to find
+ *
+ * Searches @signature_list for the given signature name.
+ *
+ * Returns: the matching signature or %NULL if it doesn't exist
+ **/
+ESignature *
+e_signature_list_find_by_name (ESignatureList *signature_list,
+ const gchar *signature_name)
+{
+ ESignature *signature = NULL;
+ EIterator *it;
+
+ g_return_val_if_fail (E_IS_SIGNATURE_LIST (signature_list), NULL);
+
+ /* this could use a callback for more flexibility ...
+ * ... but this makes the common cases easier */
+
+ if (signature_name == NULL)
+ return NULL;
+
+ for (it = e_list_get_iterator (E_LIST (signature_list));
+ e_iterator_is_valid (it);
+ e_iterator_next (it)) {
+ const gchar *value;
+
+ /* XXX EIterator misuses const. */
+ signature = (ESignature *) e_iterator_get (it);
+ value = e_signature_get_name (signature);
+
+ if (g_strcmp0 (value, signature_name) == 0)
+ break;
+
+ signature = NULL;
+ }
+
+ g_object_unref (it);
+
+ return signature;
+}
+
+/**
+ * e_signature_list_find_by_uid:
+ * @signature_list: an #ESignatureList
+ * @name: the signature UID to find
+ *
+ * Searches @signature_list for the given signature UID.
+ *
+ * Returns: the matching signature or %NULL if it doesn't exist
+ **/
+ESignature *
+e_signature_list_find_by_uid (ESignatureList *signature_list,
+ const gchar *signature_uid)
+{
+ ESignature *signature = NULL;
+ EIterator *it;
+
+ g_return_val_if_fail (E_IS_SIGNATURE_LIST (signature_list), NULL);
+
+ /* this could use a callback for more flexibility ...
+ * ... but this makes the common cases easier */
+
+ if (signature_uid == NULL)
+ return NULL;
+
+ for (it = e_list_get_iterator (E_LIST (signature_list));
+ e_iterator_is_valid (it);
+ e_iterator_next (it)) {
+ const gchar *value = NULL;
+
+ /* XXX EIterator misuses const. */
+ signature = (ESignature *) e_iterator_get (it);
+ value = e_signature_get_uid (signature);
+
+ if (g_strcmp0 (value, signature_uid) == 0)
+ break;
+
+ signature = NULL;
+ }
+
+ g_object_unref (it);
+
+ return signature;
+}
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