From 7579572643413c5d399ec2bee6339ab20232c8cf Mon Sep 17 00:00:00 2001
From: Albert Astals Cid <albert.astals@canonical.com>
Date: Mon, 6 Mar 2017 15:55:12 +0100
Subject: Call about to show for those items that have a qtubuntu-tag property

---
 libqmenumodel/src/unitymenumodel.cpp | 43 +++++++++++++++++++++++++++++++++++-
 libqmenumodel/src/unitymenumodel.h   |  3 ++-
 2 files changed, 44 insertions(+), 2 deletions(-)

diff --git a/libqmenumodel/src/unitymenumodel.cpp b/libqmenumodel/src/unitymenumodel.cpp
index 192ee46..ebadaf7 100644
--- a/libqmenumodel/src/unitymenumodel.cpp
+++ b/libqmenumodel/src/unitymenumodel.cpp
@@ -289,7 +289,7 @@ UnityMenuModel::UnityMenuModel(QObject *parent):
     priv = new UnityMenuModelPrivate(this);
 }
 
-UnityMenuModel::UnityMenuModel(const UnityMenuModelPrivate& other, QObject *parent):
+UnityMenuModel::UnityMenuModel(const UnityMenuModelPrivate& other, UnityMenuModel *parent):
     QAbstractListModel(parent)
 {
     priv = new UnityMenuModelPrivate(other, this);
@@ -729,6 +729,47 @@ void UnityMenuModel::activate(int index, const QVariant& parameter)
     }
 }
 
+void UnityMenuModel::aboutToShow(int index)
+{
+    GSequenceIter *it = g_sequence_get_iter_at_pos (priv->items, index);
+    if (g_sequence_iter_is_end (it)) {
+        return;
+    }
+
+    GtkMenuTrackerItem *item = (GtkMenuTrackerItem *) g_sequence_get (it);
+    if (!item) {
+        return;
+    }
+
+    quint64 actionTag;
+    if (gtk_menu_tracker_item_get_attribute (item, "qtubuntu-tag", "t", &actionTag)) {
+        // Child UnityMenuModel have priv->connection null, so climb to the parent until we find a non null one
+        UnityMenuModelPrivate *privToUse = priv;
+        while (privToUse && !privToUse->connection) {
+            UnityMenuModel *pModel = dynamic_cast<UnityMenuModel*>(privToUse->model->QObject::parent());
+            if (pModel) {
+                privToUse = pModel->priv;
+            } else {
+                privToUse = nullptr;
+            }
+        }
+        if (privToUse) {
+            g_dbus_connection_call (privToUse->connection,
+                                    privToUse->busName,
+                                    privToUse->menuObjectPath,
+                                    "qtubuntu.actions.extra",
+                                    "aboutToShow",
+                                    g_variant_new("(t)", actionTag),
+                                    nullptr,
+                                    G_DBUS_CALL_FLAGS_NO_AUTO_START,
+                                    0,
+                                    nullptr,
+                                    nullptr,
+                                    nullptr);
+        }
+    }
+}
+
 void UnityMenuModel::activateByVariantString(int index, const QString& parameter)
 {
     activate(index, Converter::toQVariantFromVariantString(parameter));
diff --git a/libqmenumodel/src/unitymenumodel.h b/libqmenumodel/src/unitymenumodel.h
index ed3bcd7..1a2a190 100644
--- a/libqmenumodel/src/unitymenumodel.h
+++ b/libqmenumodel/src/unitymenumodel.h
@@ -63,6 +63,7 @@ public:
     Q_INVOKABLE QVariant get(int row, const QByteArray &role);
 
     Q_INVOKABLE void activate(int index, const QVariant& parameter = QVariant());
+    Q_INVOKABLE void aboutToShow(int index);
     Q_INVOKABLE void activateByVariantString(int index, const QString& parameter = QString());
     Q_INVOKABLE void changeState(int index, const QVariant& parameter);
     Q_INVOKABLE void changeStateByVariantString(int index, const QString& parameter);
@@ -90,7 +91,7 @@ private:
     class UnityMenuModelPrivate *priv;
     friend class UnityMenuModelPrivate;
 
-    UnityMenuModel(const UnityMenuModelPrivate& other, QObject *parent);
+    UnityMenuModel(const UnityMenuModelPrivate& other, UnityMenuModel *parent);
 };
 
 #endif
-- 
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