[empathy] Force all toggle buttons in the linking UI to update on each toggle event

[Philip Withnall <pwithnall src gnome org>]

commit 788b62fd3efbfefcd2788772693af497d0123dc6
Author: Philip Withnall <philip withnall collabora co uk>
Date:   Mon Aug 30 10:06:03 2010 +0100

    Force all toggle buttons in the linking UI to update on each toggle event
    
    This ensures that the toggle buttons for different instances of the same
    Individual in the list always display in the correct state. Closes: bgo#628123

 libempathy-gtk/empathy-individual-linker.c |   44 ++++++++++++++++++++++++---
 1 files changed, 39 insertions(+), 5 deletions(-)
---
diff --git a/libempathy-gtk/empathy-individual-linker.c b/libempathy-gtk/empathy-individual-linker.c
index 94c95cb..a44e0bf 100644
--- a/libempathy-gtk/empathy-individual-linker.c
+++ b/libempathy-gtk/empathy-individual-linker.c
@@ -66,6 +66,8 @@ typedef struct {
   EmpathyIndividualView *individual_view; /* child widget */
   GtkWidget *preview_widget; /* child widget */
   EmpathyPersonaStore *persona_store; /* owned */
+  GtkTreeViewColumn *toggle_column; /* child widget */
+  GtkCellRenderer *toggle_renderer; /* child widget */
 
   FolksIndividual *start_individual; /* owned, allow-none */
   FolksIndividual *new_individual; /* owned, allow-none */
@@ -118,6 +120,21 @@ contact_toggle_cell_data_func (GtkTreeViewColumn *tree_column,
 }
 
 static void
+update_toggle_renderers (EmpathyIndividualLinker *self)
+{
+  EmpathyIndividualLinkerPriv *priv = GET_PRIV (self);
+
+  /* Re-setting the cell data func to the same function causes a refresh of the
+   * entire column, ensuring that each toggle button is correctly active or
+   * inactive. This is necessary because one Individual might appear multiple
+   * times in the list (in different groups), so toggling one instance of the
+   * Individual should toggle all of them. */
+  gtk_tree_view_column_set_cell_data_func (priv->toggle_column,
+      priv->toggle_renderer,
+      (GtkTreeCellDataFunc) contact_toggle_cell_data_func, self, NULL);
+}
+
+static void
 link_individual (EmpathyIndividualLinker *self,
     FolksIndividual *individual)
 {
@@ -137,6 +154,11 @@ link_individual (EmpathyIndividualLinker *self,
       g_list_copy (folks_individual_get_personas (individual)));
   folks_individual_set_personas (priv->new_individual, new_persona_list);
   g_list_free (new_persona_list);
+
+  /* Update the toggle renderers, so that if this Individual is listed in
+   * another group in the EmpathyIndividualView, the toggle button for that
+   * group is updated. */
+  update_toggle_renderers (self);
 }
 
 static void
@@ -166,6 +188,11 @@ unlink_individual (EmpathyIndividualLinker *self,
   new_persona_list = g_list_reverse (new_persona_list);
   folks_individual_set_personas (priv->new_individual, new_persona_list);
   g_list_free (new_persona_list);
+
+  /* Update the toggle renderers, so that if this Individual is listed in
+   * another group in the EmpathyIndividualView, the toggle button for that
+   * group is updated. */
+  update_toggle_renderers (self);
 }
 
 static void
@@ -296,7 +323,6 @@ set_up (EmpathyIndividualLinker *self)
 {
   EmpathyIndividualLinkerPriv *priv;
   EmpathyIndividualManager *individual_manager;
-  GtkCellRenderer *cell_renderer;
   GtkWidget *top_vbox;
   GtkPaned *paned;
   GtkWidget *label, *scrolled_window, *search_bar;
@@ -348,12 +374,20 @@ set_up (EmpathyIndividualLinker *self)
       (GCallback) individual_view_drag_persona_received_cb, self);
 
   /* Add a checkbox column to the selector */
-  cell_renderer = gtk_cell_renderer_toggle_new ();
-  g_signal_connect (cell_renderer, "toggled", (GCallback) row_toggled_cb, self);
-  gtk_tree_view_insert_column_with_data_func (
-      GTK_TREE_VIEW (priv->individual_view), 0, NULL, cell_renderer,
+  priv->toggle_renderer = gtk_cell_renderer_toggle_new ();
+  g_signal_connect (priv->toggle_renderer, "toggled",
+      (GCallback) row_toggled_cb, self);
+
+  priv->toggle_column = gtk_tree_view_column_new ();
+  gtk_tree_view_column_pack_start (priv->toggle_column, priv->toggle_renderer,
+      FALSE);
+  gtk_tree_view_column_set_cell_data_func (priv->toggle_column,
+      priv->toggle_renderer,
       (GtkTreeCellDataFunc) contact_toggle_cell_data_func, self, NULL);
 
+  gtk_tree_view_insert_column (GTK_TREE_VIEW (priv->individual_view),
+      priv->toggle_column, 0);
+
   scrolled_window = gtk_scrolled_window_new (NULL, NULL);
   gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window),
       GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);