1 files changed, 52 insertions, 0 deletions
diff --git a/plugins/!NotAdopted/WinterSpeak/general/observer/subject.h b/plugins/!NotAdopted/WinterSpeak/general/observer/subject.h
new file mode 100644
index 0000000000..a086e80765
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+++ b/plugins/!NotAdopted/WinterSpeak/general/observer/subject.h
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+#ifndef guard_general_observer_subject_h
+#define guard_general_observer_subject_h
+//==============================================================================
+// General Code, © 2002 Ryan Winter
+//==============================================================================
+
+#include "observer.h"
+
+#include <list>
+
+class Subject
+{
+  public:
+    Subject();
+    virtual ~Subject();
+
+    //--------------------------------------------------------------------------
+    // Description : Notify all observers of a state change
+    //--------------------------------------------------------------------------
+    void notify();
+
+    //--------------------------------------------------------------------------
+    // Description : Attach an observer to the subject
+    // Parameters  : observer - the observer
+    //--------------------------------------------------------------------------
+    void attach(Observer &observer);
+
+    //--------------------------------------------------------------------------
+    // Description : Detach an observer from the subject
+    // Parameters  : observer - the observer
+    //--------------------------------------------------------------------------
+    void detach(const Observer &observer);
+
+  private:
+    //--------------------------------------------------------------------------
+    // Description : Disallow assignment operator and copy constructor
+    //--------------------------------------------------------------------------
+    Subject(const Subject &rhs);
+    const Subject & operator=(const Subject &rhs);
+
+    std::list<Observer *> m_observer_list;
+};
+
+//==============================================================================
+//
+//  Summary     : Subject side of the observer pattern
+//
+//  Description : Instances of this class are what is observered by observers
+//
+//==============================================================================
+
+#endif