[evolution] Bug 769152 - Confirm folder Unsubscribe before doing so

[Milan Crha <mcrha src gnome org>]

commit 2b2b26ba308427f7184be1ad7fc595defd99421b
Author: Milan Crha <mcrha redhat com>
Date:   Fri Aug 5 08:53:51 2016 +0200

    Bug 769152 - Confirm folder Unsubscribe before doing so

 mail/mail.error.xml                      |    7 +++++
 modules/mail/e-mail-shell-view-actions.c |   40 +++++++++++++++++++++++++++--
 2 files changed, 44 insertions(+), 3 deletions(-)
---
diff --git a/mail/mail.error.xml b/mail/mail.error.xml
index c4b6f9e..0be2744 100644
--- a/mail/mail.error.xml
+++ b/mail/mail.error.xml
@@ -214,6 +214,13 @@ The reported error was &quot;{0}&quot;.</_secondary>
     <button stock="gtk-delete" response="GTK_RESPONSE_OK"/>
   </error>
 
+  <error id="ask-unsubscribe-folder" type="question" default="GTK_RESPONSE_NO">
+    <_primary>Really unsubscribe folder "{0}"?</_primary>
+    <_secondary xml:space="preserve">If you unsubscribe the folder, it might not be visible in the 
Evolution, while still being available on the server. You can re-subscribe in Folder->Subscriptions... 
menu.</_secondary>
+    <button _label="Do _Not Unsubscribe" response="GTK_RESPONSE_NO"/>
+    <button _label="_Unsubscribe" response="GTK_RESPONSE_YES"/>
+  </error>
+
   <error id="ask-delete-vfolder" type="question" default="GTK_RESPONSE_CANCEL">
     <_primary>Really delete folder "{0}" and all of its subfolders?</_primary>
     <button _label="Do _Not Delete" response="GTK_RESPONSE_CANCEL"/>
diff --git a/modules/mail/e-mail-shell-view-actions.c b/modules/mail/e-mail-shell-view-actions.c
index f1159cf..fc6cebf 100644
--- a/modules/mail/e-mail-shell-view-actions.c
+++ b/modules/mail/e-mail-shell-view-actions.c
@@ -960,6 +960,34 @@ action_mail_folder_select_subthread_cb (GtkAction *action,
        message_list_select_subthread (MESSAGE_LIST (message_list));
 }
 
+static gboolean
+ask_can_unsubscribe_folder (GtkWindow *parent,
+                           EMailSession *session,
+                           CamelStore *store,
+                           const gchar *folder_name)
+{
+       CamelFolder *folder;
+       gchar *full_display_name;
+       gboolean res;
+
+       g_return_val_if_fail (E_IS_MAIL_SESSION (session), FALSE);
+       g_return_val_if_fail (CAMEL_IS_STORE (store), FALSE);
+       g_return_val_if_fail (folder_name != NULL, FALSE);
+
+       folder = mail_folder_cache_ref_folder (e_mail_session_get_folder_cache (session), store, folder_name);
+       g_return_val_if_fail (CAMEL_IS_FOLDER (folder), FALSE);
+
+       full_display_name = e_mail_folder_to_full_display_name (folder, NULL);
+
+       res = GTK_RESPONSE_YES == e_alert_run_dialog_for_args (parent,
+               "mail:ask-unsubscribe-folder", full_display_name ? full_display_name : folder_name, NULL);
+
+       g_clear_object (&folder);
+       g_free (full_display_name);
+
+       return res;
+}
+
 static void
 action_mail_folder_unsubscribe_cb (GtkAction *action,
                                    EMailShellView *mail_shell_view)
@@ -968,6 +996,8 @@ action_mail_folder_unsubscribe_cb (GtkAction *action,
        EMailShellSidebar *mail_shell_sidebar;
        EMailView *mail_view;
        EMFolderTree *folder_tree;
+       EShellWindow *shell_window;
+       EMailSession *session;
        CamelStore *selected_store = NULL;
        gchar *selected_folder_name = NULL;
 
@@ -982,9 +1012,13 @@ action_mail_folder_unsubscribe_cb (GtkAction *action,
        g_return_if_fail (CAMEL_IS_STORE (selected_store));
        g_return_if_fail (selected_folder_name != NULL);
 
-       e_mail_reader_unsubscribe_folder_name (
-               E_MAIL_READER (mail_view),
-               selected_store, selected_folder_name);
+       shell_window = e_shell_view_get_shell_window (E_SHELL_VIEW (mail_shell_view));
+       session = em_folder_tree_get_session (folder_tree);
+
+       if (ask_can_unsubscribe_folder (GTK_WINDOW (shell_window), session, selected_store, 
selected_folder_name))
+               e_mail_reader_unsubscribe_folder_name (
+                       E_MAIL_READER (mail_view),
+                       selected_store, selected_folder_name);
 
        g_object_unref (selected_store);
        g_free (selected_folder_name);