[gnome-control-center] region: Wire up the input source settings button

[Bastien Nocera <hadess src gnome org>]

commit 5e737900b0df98aa5c6aac9fc0b83fff9f454692
Author: Rui Matos <tiagomatos gmail com>
Date:   Mon Jul 2 03:39:10 2012 +0200

    region: Wire up the input source settings button
    
    For XKB input sources the settings button remains unsensitive. For
    IBus sources we make it sensitive and launch the engine's setup tool
    on clicked if there is one.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=662489

 panels/region/gnome-region-panel-input.c |  115 +++++++++++++++++++++++++++---
 1 files changed, 104 insertions(+), 11 deletions(-)
---
diff --git a/panels/region/gnome-region-panel-input.c b/panels/region/gnome-region-panel-input.c
index cd670d0..3c588ca 100644
--- a/panels/region/gnome-region-panel-input.c
+++ b/panels/region/gnome-region-panel-input.c
@@ -25,6 +25,7 @@
 
 #include <glib.h>
 #include <glib/gi18n.h>
+#include <gio/gdesktopappinfo.h>
 
 #define GNOME_DESKTOP_USE_UNSTABLE_API
 #include <libgnome-desktop/gnome-xkb-info.h>
@@ -49,6 +50,7 @@ enum {
   NAME_COLUMN,
   TYPE_COLUMN,
   ID_COLUMN,
+  SETUP_COLUMN,
   N_COLUMNS
 };
 
@@ -105,6 +107,19 @@ engine_get_display_name (IBusEngineDesc *engine_desc)
   return display_name;
 }
 
+static GDesktopAppInfo *
+setup_app_info_for_id (const gchar *id)
+{
+  GDesktopAppInfo *app_info;
+  gchar *desktop_file_name;
+
+  desktop_file_name = g_strdup_printf ("ibus-setup-%s.desktop", id);
+  app_info = g_desktop_app_info_new (desktop_file_name);
+  g_free (desktop_file_name);
+
+  return app_info;
+}
+
 static void
 update_ibus_active_sources (GtkBuilder *builder)
 {
@@ -127,17 +142,22 @@ update_ibus_active_sources (GtkBuilder *builder)
       if (g_str_equal (type, INPUT_SOURCE_TYPE_IBUS))
         {
           IBusEngineDesc *engine_desc = NULL;
+          GDesktopAppInfo *app_info = NULL;
           gchar *display_name = NULL;
 
           engine_desc = g_hash_table_lookup (ibus_engines, id);
           if (engine_desc)
             {
               display_name = engine_get_display_name (engine_desc);
+              app_info = setup_app_info_for_id (id);
 
               gtk_list_store_set (GTK_LIST_STORE (model), &iter,
                                   NAME_COLUMN, display_name,
+                                  SETUP_COLUMN, app_info,
                                   -1);
               g_free (display_name);
+              if (app_info)
+                g_object_unref (app_info);
             }
         }
 
@@ -293,6 +313,7 @@ populate_with_active_sources (GtkListStore *store)
   const gchar *type;
   const gchar *id;
   gchar *display_name;
+  GDesktopAppInfo *app_info;
   GtkTreeIter tree_iter;
 
   sources = g_settings_get_value (input_sources_settings, KEY_INPUT_SOURCES);
@@ -301,6 +322,7 @@ populate_with_active_sources (GtkListStore *store)
   while (g_variant_iter_next (&iter, "(&s&s)", &type, &id))
     {
       display_name = NULL;
+      app_info = NULL;
 
       if (g_str_equal (type, INPUT_SOURCE_TYPE_XKB))
         {
@@ -321,7 +343,10 @@ populate_with_active_sources (GtkListStore *store)
             engine_desc = g_hash_table_lookup (ibus_engines, id);
 
           if (engine_desc)
-            display_name = engine_get_display_name (engine_desc);
+            {
+              display_name = engine_get_display_name (engine_desc);
+              app_info = setup_app_info_for_id (id);
+            }
 #else
           g_warning ("IBus input source type specified but IBus support was not compiled");
           continue;
@@ -338,8 +363,11 @@ populate_with_active_sources (GtkListStore *store)
                           NAME_COLUMN, display_name,
                           TYPE_COLUMN, type,
                           ID_COLUMN, id,
+                          SETUP_COLUMN, app_info,
                           -1);
       g_free (display_name);
+      if (app_info)
+        g_object_unref (app_info);
     }
 
   g_variant_unref (sources);
@@ -384,17 +412,13 @@ get_selected_iter (GtkBuilder    *builder,
 }
 
 static gint
-find_selected_layout_idx (GtkBuilder *builder)
+idx_from_model_iter (GtkTreeModel *model,
+                     GtkTreeIter  *iter)
 {
-  GtkTreeIter iter;
-  GtkTreeModel *model;
   GtkTreePath *path;
   gint idx;
 
-  if (!get_selected_iter (builder, &model, &iter))
-    return -1;
-
-  path = gtk_tree_model_get_path (model, &iter);
+  path = gtk_tree_model_get_path (model, iter);
   if (path == NULL)
     return -1;
 
@@ -411,24 +435,45 @@ update_button_sensitivity (GtkBuilder *builder)
   GtkWidget *up_button;
   GtkWidget *down_button;
   GtkWidget *show_button;
+  GtkWidget *settings_button;
   GtkTreeView *tv;
+  GtkTreeModel *model;
+  GtkTreeIter iter;
   gint n_active;
   gint index;
+  gboolean settings_sensitive;
+  GDesktopAppInfo *app_info;
 
   remove_button = WID("input_source_remove");
   show_button = WID("input_source_show");
   up_button = WID("input_source_move_up");
   down_button = WID("input_source_move_down");
+  settings_button = WID("input_source_settings");
 
   tv = GTK_TREE_VIEW (WID ("active_input_sources"));
-
   n_active = gtk_tree_model_iter_n_children (gtk_tree_view_get_model (tv), NULL);
-  index = find_selected_layout_idx (builder);
+
+  if (get_selected_iter (builder, &model, &iter))
+    {
+      index = idx_from_model_iter (model, &iter);
+      gtk_tree_model_get (model, &iter, SETUP_COLUMN, &app_info, -1);
+    }
+  else
+    {
+      index = -1;
+      app_info = NULL;
+    }
+
+  settings_sensitive = (index >= 0 && app_info != NULL);
+
+  if (app_info)
+    g_object_unref (app_info);
 
   gtk_widget_set_sensitive (remove_button, index >= 0 && n_active > 1);
   gtk_widget_set_sensitive (show_button, index >= 0);
   gtk_widget_set_sensitive (up_button, index > 0);
   gtk_widget_set_sensitive (down_button, index >= 0 && index < n_active - 1);
+  gtk_widget_set_sensitive (settings_button, settings_sensitive);
 }
 
 static void
@@ -470,6 +515,7 @@ chooser_response (GtkWidget *chooser, gint response_id, gpointer data)
           gchar *name;
           gchar *type;
           gchar *id;
+          GDesktopAppInfo *app_info = NULL;
 
           gtk_tree_model_get (model, &iter,
                               NAME_COLUMN, &name,
@@ -477,6 +523,11 @@ chooser_response (GtkWidget *chooser, gint response_id, gpointer data)
                               ID_COLUMN, &id,
                               -1);
 
+#ifdef HAVE_IBUS
+          if (g_str_equal (type, INPUT_SOURCE_TYPE_IBUS))
+            app_info = setup_app_info_for_id (id);
+#endif
+
           tv = GTK_TREE_VIEW (WID ("active_input_sources"));
           child_model = GTK_LIST_STORE (tree_view_get_actual_model (tv));
 
@@ -486,10 +537,13 @@ chooser_response (GtkWidget *chooser, gint response_id, gpointer data)
                               NAME_COLUMN, name,
                               TYPE_COLUMN, type,
                               ID_COLUMN, id,
+                              SETUP_COLUMN, app_info,
                               -1);
           g_free (name);
           g_free (type);
           g_free (id);
+          if (app_info)
+            g_object_unref (app_info);
 
           gtk_tree_model_filter_convert_child_iter_to_iter (GTK_TREE_MODEL_FILTER (gtk_tree_view_get_model (tv)),
                                                             &filter_iter,
@@ -712,6 +766,39 @@ show_selected_layout (GtkButton *button, gpointer data)
   g_free (id);
 }
 
+static void
+show_selected_settings (GtkButton *button, gpointer data)
+{
+  GtkBuilder *builder = data;
+  GtkTreeModel *model;
+  GtkTreeIter iter;
+  GdkAppLaunchContext *ctx;
+  GDesktopAppInfo *app_info;
+  GError *error = NULL;
+
+  g_debug ("show selected layout");
+
+  if (!get_selected_iter (builder, &model, &iter))
+    return;
+
+  gtk_tree_model_get (model, &iter, SETUP_COLUMN, &app_info, -1);
+
+  if (!app_info)
+    return;
+
+  ctx = gdk_display_get_app_launch_context (gdk_display_get_default ());
+  gdk_app_launch_context_set_timestamp (ctx, gtk_get_current_event_time ());
+
+  if (!g_app_info_launch (G_APP_INFO (app_info), NULL, G_APP_LAUNCH_CONTEXT (ctx), &error))
+    {
+      g_warning ("Failed to launch input source setup: %s", error->message);
+      g_error_free (error);
+    }
+
+  g_object_unref (ctx);
+  g_object_unref (app_info);
+}
+
 static gboolean
 go_to_shortcuts (GtkLinkButton *button,
                  CcRegionPanel *panel)
@@ -840,7 +927,11 @@ setup_input_tabs (GtkBuilder    *builder,
   gtk_tree_view_column_add_attribute (column, cell, "text", NAME_COLUMN);
   gtk_tree_view_append_column (GTK_TREE_VIEW (treeview), column);
 
-  store = gtk_list_store_new (3, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_STRING);
+  store = gtk_list_store_new (4,
+                              G_TYPE_STRING,
+                              G_TYPE_STRING,
+                              G_TYPE_STRING,
+                              G_TYPE_DESKTOP_APP_INFO);
 
   populate_with_active_sources (store);
 
@@ -870,6 +961,8 @@ setup_input_tabs (GtkBuilder    *builder,
                     G_CALLBACK (move_selected_input_down), builder);
   g_signal_connect (WID("input_source_show"), "clicked",
                     G_CALLBACK (show_selected_layout), builder);
+  g_signal_connect (WID("input_source_settings"), "clicked",
+                    G_CALLBACK (show_selected_settings), builder);
 
   /* use an em dash is no shortcut */
   update_shortcuts (builder);