From 1bc24273997f94cae871613dd655ab548f97565c Mon Sep 17 00:00:00 2001
From: Lars Uebernickel <lars.uebernickel@canonical.com>
Date: Mon, 24 Jun 2013 13:09:43 -0400
Subject: unitymenumodel: set free func on GSequence

Makes item removal code much cleaner (no need for the explicit free), at the
cost of another qdata.
---
 libqmenumodel/src/unitymenumodel.cpp | 39 +++++++++---------------------------
 1 file changed, 10 insertions(+), 29 deletions(-)

diff --git a/libqmenumodel/src/unitymenumodel.cpp b/libqmenumodel/src/unitymenumodel.cpp
index 525e115..58b9fda 100644
--- a/libqmenumodel/src/unitymenumodel.cpp
+++ b/libqmenumodel/src/unitymenumodel.cpp
@@ -25,6 +25,7 @@ extern "C" {
 
 G_DEFINE_QUARK (UNITY_MENU_MODEL, unity_menu_model)
 G_DEFINE_QUARK (UNITY_SUBMENU_MODEL, unity_submenu_model)
+G_DEFINE_QUARK (UNITY_MENU_ITEM_ITERATOR, unity_menu_item_iterator)
 
 enum MenuRoles {
     ActionRole  = Qt::DisplayRole + 1,
@@ -55,7 +56,6 @@ public:
     QByteArray actionObjectPath;
     QByteArray menuObjectPath;
 
-    static void freeMenuItem(gpointer data, gpointer user_data);
     static void nameAppeared(GDBusConnection *connection, const gchar *name, const gchar *owner, gpointer user_data);
     static void nameVanished(GDBusConnection *connection, const gchar *name, gpointer user_data);
     static void menuItemInserted(GtkMenuTrackerItem *item, gint position, gpointer user_data);
@@ -63,20 +63,12 @@ public:
     static void menuItemChanged(GObject *object, GParamSpec *pspec, gpointer user_data);
 };
 
-/*
- * Same as g_sequence_foreach_range, but calls func with the GSequenceIter
- * instead of the item.
- */
-static void
-g_sequence_foreach_iter_range (GSequenceIter *begin,
-                               GSequenceIter *end,
-                               GFunc          func,
-                               gpointer       user_data)
+void menu_item_free (gpointer data)
 {
-    GSequenceIter *it;
+    GtkMenuTrackerItem *item = (GtkMenuTrackerItem *) data;
 
-    for (it = begin; it != end; it = g_sequence_iter_next (it))
-        func (it, user_data);
+    g_signal_handlers_disconnect_by_func (item, (gpointer) UnityMenuModelPrivate::menuItemChanged, NULL);
+    g_object_unref (item);
 }
 
 UnityMenuModelPrivate::UnityMenuModelPrivate(UnityMenuModel *model)
@@ -89,7 +81,7 @@ UnityMenuModelPrivate::UnityMenuModelPrivate(UnityMenuModel *model)
     this->muxer = gtk_action_muxer_new ();
     g_object_set_qdata (G_OBJECT (this->muxer), unity_menu_model_quark (), model);
 
-    this->items = g_sequence_new (NULL);
+    this->items = g_sequence_new (menu_item_free);
 }
 
 UnityMenuModelPrivate::~UnityMenuModelPrivate()
@@ -104,16 +96,6 @@ UnityMenuModelPrivate::~UnityMenuModelPrivate()
         g_bus_unwatch_name (this->nameWatchId);
 }
 
-void UnityMenuModelPrivate::freeMenuItem (gpointer data, gpointer user_data)
-{
-    GSequenceIter *it = (GSequenceIter *) data;
-    GtkMenuTrackerItem *item;
-
-    item = (GtkMenuTrackerItem *) g_sequence_get (it);
-    g_signal_handlers_disconnect_by_func (item, (gpointer) menuItemChanged, it);
-    g_object_unref (item);
-}
-
 void UnityMenuModelPrivate::clearItems(bool resetModel)
 {
     GSequenceIter *begin;
@@ -124,7 +106,6 @@ void UnityMenuModelPrivate::clearItems(bool resetModel)
 
     begin = g_sequence_get_begin_iter (this->items);
     end = g_sequence_get_end_iter (this->items);
-    g_sequence_foreach_iter_range (begin, end, freeMenuItem, NULL);
     g_sequence_remove_range (begin, end);
 
     if (resetModel)
@@ -199,6 +180,7 @@ void UnityMenuModelPrivate::menuItemInserted(GtkMenuTrackerItem *item, gint posi
     priv->model->beginInsertRows(QModelIndex(), position, position);
 
     it = g_sequence_get_iter_at_pos (priv->items, position);
+    g_object_set_qdata (G_OBJECT (item), unity_menu_item_iterator_quark (), it);
     g_signal_connect (item, "notify", G_CALLBACK (menuItemChanged), it);
     g_sequence_insert_before (it, g_object_ref (item));
 
@@ -212,21 +194,20 @@ void UnityMenuModelPrivate::menuItemRemoved(gint position, gpointer user_data)
 
     priv->model->beginRemoveRows(QModelIndex(), position, position);
 
-    it = g_sequence_get_iter_at_pos (priv->items, position);
-    freeMenuItem ((gpointer) it, NULL);
-    g_sequence_remove (it);
+    g_sequence_remove (g_sequence_get_iter_at_pos (priv->items, position));
 
     priv->model->endRemoveRows();
 }
 
 void UnityMenuModelPrivate::menuItemChanged(GObject *object, GParamSpec *pspec, gpointer user_data)
 {
-    GSequenceIter *it = (GSequenceIter *) user_data;
+    GSequenceIter *it;
     GtkMenuTrackerItem *item;
     GtkActionObservable *muxer;
     UnityMenuModel *model;
     gint position;
 
+    it = (GSequenceIter *) g_object_get_qdata (object, unity_menu_item_iterator_quark ());
     item = (GtkMenuTrackerItem *) g_sequence_get (it);
     muxer = _gtk_menu_tracker_item_get_observable (item);
     model = (UnityMenuModel *) g_object_get_qdata (G_OBJECT (muxer), unity_menu_model_quark ());
-- 
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