[gedit/gnome-3-16] spell: fix bug with document metadata



commit f2beb86ace88f9e4009feacf9c96629590073ced
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sun Jun 7 14:51:43 2015 +0200

    spell: fix bug with document metadata
    
    See the comment in the code.
    
    With one document, the bug was easy to reproduce:
    1. open document <file> in gedit
    2. activate the auto spell -> metadata set to 1
    3. close gedit
    4. $ gedit <file> -> spell checking disabled, but should be enabled
    
    https://bugzilla.gnome.org/show_bug.cgi?id=741853

 plugins/spell/gedit-spell-plugin.c |   56 +++++++++++++++++++++++++++++------
 1 files changed, 46 insertions(+), 10 deletions(-)
---
diff --git a/plugins/spell/gedit-spell-plugin.c b/plugins/spell/gedit-spell-plugin.c
index 66ea961..9e507da 100644
--- a/plugins/spell/gedit-spell-plugin.c
+++ b/plugins/spell/gedit-spell-plugin.c
@@ -89,15 +89,16 @@ G_DEFINE_DYNAMIC_TYPE_EXTENDED (GeditSpellPlugin,
                                                               gedit_window_activatable_iface_init)
                                G_ADD_PRIVATE_DYNAMIC (GeditSpellPlugin))
 
-static void    spell_cb        (GSimpleAction *action, GVariant *parameter, gpointer data);
-static void    set_language_cb (GSimpleAction *action, GVariant *parameter, gpointer data);
-static void    auto_spell_cb   (GSimpleAction *action, GVariant *state, gpointer data);
+static void    spell_cb                        (GSimpleAction *action, GVariant *parameter, gpointer data);
+static void    set_language_cb                 (GSimpleAction *action, GVariant *parameter, gpointer data);
+static void    auto_spell_activate_cb          (GSimpleAction *action, GVariant *parameter, gpointer data);
+static void    auto_spell_change_state_cb      (GSimpleAction *action, GVariant *state, gpointer data);
 
 static GActionEntry action_entries[] =
 {
        { "check-spell", spell_cb },
        { "config-spell", set_language_cb },
-       { "auto-spell", NULL, NULL, "false", auto_spell_cb }
+       { "auto-spell", auto_spell_activate_cb, NULL, "false", auto_spell_change_state_cb }
 };
 
 static GQuark spell_checker_id = 0;
@@ -895,20 +896,27 @@ set_auto_spell (GeditWindow   *window,
 }
 
 static void
-auto_spell_cb (GSimpleAction  *action,
-               GVariant       *state,
-               gpointer        data)
+auto_spell_activate_cb (GSimpleAction *action,
+                       GVariant      *parameter,
+                       gpointer       data)
 {
        GeditSpellPlugin *plugin = GEDIT_SPELL_PLUGIN (data);
        GeditSpellPluginPrivate *priv = plugin->priv;
-       GeditView *view;
+       GVariant *state;
        gboolean active;
+       GeditView *view;
 
        gedit_debug (DEBUG_PLUGINS);
 
+       state = g_action_get_state (G_ACTION (action));
+       g_return_if_fail (state != NULL);
+
        active = g_variant_get_boolean (state);
+       g_variant_unref (state);
 
-       gedit_debug_message (DEBUG_PLUGINS, active ? "Auto Spell activated" : "Auto Spell deactivated");
+       /* We must toggle ourself the value. */
+       active = !active;
+       g_action_change_state (G_ACTION (action), g_variant_new_boolean (active));
 
        view = gedit_window_get_active_view (priv->window);
        if (view != NULL)
@@ -917,10 +925,38 @@ auto_spell_cb (GSimpleAction  *action,
 
                doc = GEDIT_DOCUMENT (gtk_text_view_get_buffer (GTK_TEXT_VIEW (view)));
 
+               /* Set metadata in the "activate" handler, not in "change-state"
+                * because "change-state" is called every time the state
+                * changes, not specifically when the user has changed the state
+                * herself. For example "change-state" is called to initialize
+                * the sate to the default value specified in the GActionEntry.
+                */
                gedit_document_set_metadata (doc,
                                             GEDIT_METADATA_ATTRIBUTE_SPELL_ENABLED,
-                                            active ? "1" : NULL, NULL);
+                                            active ? "1" : NULL,
+                                            NULL);
+       }
+}
+
+static void
+auto_spell_change_state_cb (GSimpleAction *action,
+                           GVariant      *state,
+                           gpointer       data)
+{
+       GeditSpellPlugin *plugin = GEDIT_SPELL_PLUGIN (data);
+       GeditSpellPluginPrivate *priv = plugin->priv;
+       GeditView *view;
+       gboolean active;
+
+       gedit_debug (DEBUG_PLUGINS);
+
+       active = g_variant_get_boolean (state);
 
+       gedit_debug_message (DEBUG_PLUGINS, active ? "Auto Spell activated" : "Auto Spell deactivated");
+
+       view = gedit_window_get_active_view (priv->window);
+       if (view != NULL)
+       {
                set_auto_spell (priv->window, view, active);
                g_simple_action_set_state (action, g_variant_new_boolean (active));
        }


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