callback: Remove all references to callbacks

Callbacks have no remaining users and can safely be removed :)

Signed-off-by: Anna Schumaker <Anna@OcarinaProject.net>

DESIGN

@@ -39,5 +39,4 @@ Core Layers:
 		* Index		(include/core/index.h)
 		* Databases	(include/core/database.h)
 		* File		(include/core/file.h)
-		* Callbacks	(include/core/callback.h)
 		* Version	(include/core/version.h)

TODO

@@ -58,7 +58,6 @@ Future work:
 		the library?  Perhaps create a mirror group?
 
 	- Extra testing ideas:
-		- Test callbacks
 		- Create a default main() that deletes data directory
 
 	- Preferences:
@@ -90,7 +89,6 @@ Future work:
 	- Make DatabaseEntry::primary_key() private (only used by Database)
 	- "On demand" databases that load the first time they are accessed?
 	- Queues have their own indexes?
-	- Remove callbacks (may need "driver" for queues)
 	- Remove glib specifc code from core/
 	- Virtual file system
 	  - Fake filesystem access for testing

core/callback.cpp

@@ -1,19 +0,0 @@
-/**
- * @file
- * Copyright 2014 (c) Anna Schumaker.
- */
-#include <core/callback.h>
-
-
-static void no_op(Queue *) {}
-
-
-static struct Callbacks callbacks = {
-	.on_pq_removed			= no_op,
-};
-
-
-struct Callbacks *get_callbacks()
-{
-	return &callbacks;
-}

core/deck.cpp

@@ -2,7 +2,6 @@
  * @file
  * Copyright 2013 (c) Anna Schumaker.
  */
-#include <core/callback.h>
 #include <core/deck.h>
 #include <core/file.h>
 #include <core/library.h>
@@ -136,7 +135,6 @@ Queue *deck :: create(bool random)
 
 static void _destroy(std::list<TempQueue>::iterator &it)
 {
-	get_callbacks()->on_pq_removed(&(*it));
 	queue_deck.erase(it);
 	deck :: write();
 }

core/queue.cpp

@@ -2,7 +2,6 @@
  * @file
  * Copyright 2013 (c) Anna Schumaker.
  */
-#include <core/callback.h>
 #include <core/queue.h>
 #include <core/random.h>
 #include <core/string.h>

gui/queue.cpp

@@ -1,7 +1,6 @@
 /*
  * Copyright 2014 (c) Anna Schumaker.
  */
-#include <core/callback.h>
 #include <core/deck.h>
 #include <core/string.h>
 #include <gui/tabs.h>

gui/tabs.cpp

@@ -1,7 +1,6 @@
 /*
  * Copyright 2014 (c) Anna Schumaker.
  */
-#include <core/callback.h>
 #include <core/deck.h>
 #include <core/filter.h>
 #include <core/playlist.h>

include/core/callback.h

@@ -1,36 +0,0 @@
-/**
- * @file
- * Copyright 2014 (c) Anna Schumaker.
- */
-#ifndef OCARINA_CORE_CALLBACK_H
-#define OCARINA_CORE_CALLBACK_H
-
-#include <core/library.h>
-#include <core/queue.h>
-
-
-/**
- * A structure for managing callback function pointers
- */
-struct Callbacks {
-	/* Deck callbacks */
-
-	/**
-	 * Called when a queue is removed.
-	 *
-	 * @param  queue  The queue that is being removed.
-	 */
-	void (*on_pq_removed)(Queue *);
-
-};
-
-
-/**
- * Called to access the callbacks structure.
- *
- * @return The current struct Callbacks for this application.
- */
-struct Callbacks *get_callbacks();
-
-
-#endif /* OCARINA_CORE_CALLBACK_H */

tests/core/Sconscript

@@ -24,7 +24,6 @@ test(	"tags/track"	)
 
 test(	"random"	)
 
-objs += [ get_test_obj("callback", "core") ]
 objs += [ get_test_obj("tags/tags", "core") ]
 test(	"queue"		)
 test_env.UsePackage("taglib")

tests/core/deck.cpp

@@ -1,7 +1,6 @@
 /*
  * Copyright 2013 (c) Anna Schumaker.
  */
-#include <core/callback.h>
 #include <core/deck.h>
 #include <core/library.h>
 #include <core/tags/tags.h>

tests/core/queue.cpp

@@ -1,7 +1,6 @@
 /*
  * Copyright 2014 (c) Anna Schumaker.
  */
-#include <core/callback.h>
 #include <core/queue.h>
 #include <core/random.h>
 #include <core/tags/tags.h>
@@ -31,6 +30,7 @@ class TestQueue : public Queue {
 public:
 	TestQueue() : Queue() { set_notifier(&test_notifier); }
 	TestQueue(unsigned int f) : Queue(f) { set_notifier(&test_notifier); }
+	~TestQueue() {}
 	unsigned int get_cur()    { return _cur;    }
 	unsigned int get_flags()  { return _flags;  }
 	QNotifier   *get_notify() { return _notify; }