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-rw-r--r--common/message.cpp32
-rw-r--r--common/message.h40
2 files changed, 72 insertions, 0 deletions
diff --git a/common/message.cpp b/common/message.cpp
new file mode 100644
index 0000000..a124ed6
--- /dev/null
+++ b/common/message.cpp
@@ -0,0 +1,32 @@
+//
+// LeoCAD messaging system
+//
+
+#include "message.h"
+
+Messenger::Messenger ()
+{
+ m_nRef = 0;
+}
+
+Messenger::~Messenger ()
+{
+ for (unsigned int i = 0; i < m_Listeners.GetSize (); i++)
+ delete m_Listeners[i];
+}
+
+void Messenger::Dispatch (int message, void *data)
+{
+ for (unsigned int i = 0; i < m_Listeners.GetSize (); i++)
+ m_Listeners[i]->func (message, data, m_Listeners[i]->user);
+}
+
+void Messenger::Listen (LC_MSG_CALLBACK func, void *user)
+{
+ LC_MSG_STRUCT *s = new LC_MSG_STRUCT;
+
+ s->func = func;
+ s->user = user;
+
+ m_Listeners.Add (s);
+}
diff --git a/common/message.h b/common/message.h
new file mode 100644
index 0000000..f97cff2
--- /dev/null
+++ b/common/message.h
@@ -0,0 +1,40 @@
+#ifndef _MESSAGE_H_
+#define _MESSAGE_H_
+
+#include "array.h"
+
+typedef void (*LC_MSG_CALLBACK) (int message, void *data, void *user);
+
+typedef enum
+{
+ LC_MSG_FOCUS_CHANGED,
+ // LC_MSG_SELECTION_CHANGED,
+ LC_MSG_COUNT
+} LC_MESSAGES;
+
+typedef struct
+{
+ LC_MSG_CALLBACK func;
+ void *user;
+} LC_MSG_STRUCT;
+
+class Messenger
+{
+ public:
+ Messenger ();
+ ~Messenger ();
+
+ void AddRef ()
+ { m_nRef++; };
+ void DecRef ()
+ { m_nRef--; if (m_nRef == 0) delete this; };
+
+ void Dispatch (int message, void *data);
+ void Listen (LC_MSG_CALLBACK func, void *user);
+
+ protected:
+ int m_nRef;
+ PtrArray<LC_MSG_STRUCT> m_Listeners;
+};
+
+#endif // _MESSAGE_H_