[eog] Revert "Remove unneeded static variable"

[Felix Riemann <friemann src gnome org>]

commit abe2d406d61a40073b6d8f8cfa3ae5cedf451c0f
Author: Felix Riemann <friemann gnome org>
Date:   Fri Sep 30 23:26:44 2011 +0200

    Revert "Remove unneeded static variable"
    
    This reverts commit d90c385f06fc57837bbfe39e7f8b6084eccaace9.
    
    Let's keep it how it's done in the GObject manual for now.

 src/eog-window-activatable.c |   33 +++++++++++++++++++--------------
 1 files changed, 19 insertions(+), 14 deletions(-)
---
diff --git a/src/eog-window-activatable.c b/src/eog-window-activatable.c
index a70f56f..3221ab7 100644
--- a/src/eog-window-activatable.c
+++ b/src/eog-window-activatable.c
@@ -38,20 +38,25 @@ G_DEFINE_INTERFACE(EogWindowActivatable, eog_window_activatable, G_TYPE_OBJECT)
 void
 eog_window_activatable_default_init (EogWindowActivatableInterface *iface)
 {
-	/**
-	 * EogWindowActivatable:window:
-	 *
-	 * This is the #EogWindow this #EogWindowActivatable instance
-	 * should be attached to.
-	 */
-	g_object_interface_install_property (iface,
-			g_param_spec_object ("window", "Window",
-					     "The EogWindow this "
-					     "instance it attached to",
-					     EOG_TYPE_WINDOW,
-					     G_PARAM_READWRITE |
-					     G_PARAM_CONSTRUCT_ONLY |
-					     G_PARAM_STATIC_STRINGS));
+	static gboolean initialized = FALSE;
+
+	if (!initialized) {
+		/**
+		 * EogWindowActivatable:window:
+		 *
+		 * This is the #EogWindow this #EogWindowActivatable instance
+		 * should be attached to.
+		 */
+		g_object_interface_install_property (iface,
+				g_param_spec_object ("window", "Window",
+						     "The EogWindow this "
+						     "instance it attached to",
+						     EOG_TYPE_WINDOW,
+						     G_PARAM_READWRITE |
+						     G_PARAM_CONSTRUCT_ONLY |
+						     G_PARAM_STATIC_STRINGS));
+		initialized = TRUE;
+	}
 }
 
 void