Imported Upstream version 0.26.0

components/loadinglistener/loadinglistener.hpp

@@ -0,0 +1,35 @@
+#ifndef COMPONENTS_LOADINGLISTENER_H
+#define COMPONENTS_LOADINGLISTENER_H
+
+namespace Loading
+{
+    class Listener
+    {
+    public:
+        virtual void setLabel (const std::string& label) = 0;
+
+        // Use ScopedLoad instead of using these directly
+        virtual void loadingOn() = 0;
+        virtual void loadingOff() = 0;
+
+        /// Indicate that some progress has been made, without specifying how much
+        virtual void indicateProgress () = 0;
+
+        virtual void setProgressRange (size_t range) = 0;
+        virtual void setProgress (size_t value) = 0;
+        virtual void increaseProgress (size_t increase) = 0;
+
+        /// Indicate the scene is now ready to be shown
+        virtual void removeWallpaper() = 0;
+    };
+
+    // Used for stopping a loading sequence when the object goes out of scope
+    struct ScopedLoad
+    {
+        ScopedLoad(Listener* l) : mListener(l) { mListener->loadingOn(); }
+        ~ScopedLoad() { mListener->loadingOff(); }
+        Listener* mListener;
+    };
+}
+
+#endif