autoupdate: fix corner case of update window not appearing

If the update window is displayed when Ring is minimized
then it can be seen in the taskbar but there is no way
to deminimize it.

- Bump Winsparkle to use the new did_find_update_callback

Change-Id: I69cbacef43f81fae5aaca5375691788f09b5d48d
Tuleap: #280

main.cpp

@@ -136,22 +136,20 @@ main(int argc, char *argv[])
     QCoreApplication::setOrganizationDomain("ring.cx");
     QCoreApplication::setApplicationName("Ring");
 
-    MainWindow w;
-
     if (not uri.isEmpty()) {
         startMinimized = false;
-        w.onRingEvent(uri);
+        MainWindow::instance().onRingEvent(uri);
     }
 
     if (not startMinimized)
-        w.show();
+        MainWindow::instance().show();
     else
-        w.showMinimized();
+        MainWindow::instance().showMinimized();
 
-    w.createThumbBar();
+    MainWindow::instance().createThumbBar();
 
 #ifdef URI_PROTOCOL
-    QObject::connect(shmClient, SIGNAL(RingEvent(QString)), &w, SLOT(onRingEvent(QString)));
+    QObject::connect(shmClient, SIGNAL(RingEvent(QString)), &MainWindow::instance(), SLOT(onRingEvent(QString)));
 
     QObject::connect(&a, &QApplication::aboutToQuit, [&a, &shmClient, &shm, &sem]() {
         shmClient->terminate();

mainwindow.cpp

@@ -100,6 +100,7 @@ MainWindow::MainWindow(QWidget *parent) :
     win_sparkle_set_appcast_url("http://gpl.savoirfairelinux.net/ring-download/windows/winsparkle-ring.xml");
     win_sparkle_set_app_details(L"Savoir-faire Linux", L"Ring", QString(NIGHTLY_VERSION).toStdWString().c_str());
     win_sparkle_set_shutdown_request_callback([]() {QCoreApplication::exit();});
+    win_sparkle_set_did_find_update_callback([]() {MainWindow::instance().showNormal();});
     win_sparkle_init();
 
     if (win_sparkle_get_last_check_time() == -1) {

mainwindow.h

@@ -39,8 +39,10 @@ class MainWindow : public QMainWindow
     Q_OBJECT
 
 public:
-    explicit MainWindow(QWidget *parent = 0);
-    ~MainWindow();
+    inline static MainWindow& instance()  {
+        static auto instance = new MainWindow();
+        return *instance;
+    }
     void createThumbBar();
 
 protected:
@@ -55,6 +57,8 @@ private slots:
     void switchNormalMaximize();
 
 private:
+    explicit MainWindow(QWidget *parent = 0);
+     ~MainWindow();
     Ui::MainWindow* ui;
     NavStack* navStack_;
     WindowBarUpOne* wbOne_;

winsparkle @ 1110f626

-Subproject commit 0e2112bf52ca171062cbb732896be1c9760ff44c
+Subproject commit 1110f626f4c659beb9fcb05e7ecac380b96c6d15