Added ITrackList interface to sdk. We'll use this for plugins in the near

future.

src/core/core.vcxproj

@@ -180,6 +180,7 @@
     <ClInclude Include="sdk\IRetainedTrack.h" />
     <ClInclude Include="sdk\ISpectrumVisualizer.h" />
     <ClInclude Include="sdk\ITrack.h" />
+    <ClInclude Include="sdk\ITrackList.h" />
     <ClInclude Include="sdk\ITrackListEditor.h" />
     <ClInclude Include="sdk\IVisualizer.h" />
     <ClInclude Include="support\Common.h" />

src/core/core.vcxproj.filters

@@ -327,5 +327,8 @@
     <ClInclude Include="sdk\ITrackListEditor.h">
       <Filter>src\sdk</Filter>
     </ClInclude>
+    <ClInclude Include="sdk\ITrackList.h">
+      <Filter>src\sdk</Filter>
+    </ClInclude>
   </ItemGroup>
 </Project>

src/core/library/track/TrackList.cpp

@@ -38,6 +38,7 @@
 #include <core/library/query/QueryBase.h>
 #include <core/library/track/LibraryTrack.h>
 #include <core/library/LocalLibraryConstants.h>
+#include <core/library/track/RetainedTrack.h>
 #include <core/db/Connection.h>
 #include <core/db/Statement.h>
 
@@ -50,6 +51,8 @@ using namespace musik::core::db;
 using namespace musik::core::query;
 using namespace musik::core::library;
 
+using namespace musik::core::sdk;
+
 class TrackMetadataQuery : public QueryBase {
     public:
         TrackMetadataQuery(DBID trackId, LibraryPtr library);
@@ -137,6 +140,10 @@ TrackPtr TrackList::Get(size_t index) {
     return query->Result();
 }
 
+IRetainedTrack* TrackList::GetRetainedTrack(size_t index) {
+    return new RetainedTrack(this->Get(index));
+}
+
 DBID TrackList::GetId(size_t index) {
     return this->ids.at(index);
 }

src/core/library/track/TrackList.h

@@ -34,39 +34,45 @@
 
 #pragma once
 
+#include <core/sdk/ITrackList.h>
+#include <core/sdk/ITrackListEditor.h>
+
 #include <core/library/track/Track.h>
 #include <core/library/ILibrary.h>
-#include <core/sdk/ITrackListEditor.h>
 
 #include <unordered_map>
 #include <list>
 
 namespace musik { namespace core {
-    class TrackList : public musik::core::sdk::ITrackListEditor {
+    class TrackList :
+        public musik::core::sdk::ITrackList,
+        public musik::core::sdk::ITrackListEditor
+    {
         public:
             TrackList(LibraryPtr library);
             virtual ~TrackList();
 
-            /* implementation specific */
-            DBID GetId(size_t index);
-            int IndexOf(DBID id);
-            void ClearCache();
-            void Swap(TrackList& list);
-            void CopyFrom(TrackList& from);
-
             /* ITrackList */
-            size_t Count();
+            virtual size_t Count();
-            TrackPtr Get(size_t index);
+            virtual musik::core::sdk::IRetainedTrack* GetRetainedTrack(size_t index);
+            virtual DBID GetId(size_t index);
+            virtual int IndexOf(DBID id);
 
             /* ITrackListEditor */
             virtual void Add(const DBID id);
             virtual void Clear();
-            virtual bool Insert(unsigned long long id, size_t index);
+            virtual bool Insert(DBID id, size_t index);
             virtual bool Swap(size_t index1, size_t index2);
             virtual bool Move(size_t from, size_t to);
             virtual bool Delete(size_t index);
             virtual void Shuffle();
 
+            /* implementation specific */
+            TrackPtr Get(size_t index);
+            void ClearCache();
+            void Swap(TrackList& list);
+            void CopyFrom(TrackList& from);
+
         private:
             typedef std::list<DBID> CacheList;
             typedef std::pair<TrackPtr, CacheList::iterator> CacheValue;

src/core/sdk/ITrackList.h

@@ -0,0 +1,54 @@
+//////////////////////////////////////////////////////////////////////////////
+//
+// Copyright (c) 2007-2016 musikcube team
+//
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+//    * Redistributions of source code must retain the above copyright notice,
+//      this list of conditions and the following disclaimer.
+//
+//    * Redistributions in binary form must reproduce the above copyright
+//      notice, this list of conditions and the following disclaimer in the
+//      documentation and/or other materials provided with the distribution.
+//
+//    * Neither the name of the author nor the names of other contributors may
+//      be used to endorse or promote products derived from this software
+//      without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+//
+//////////////////////////////////////////////////////////////////////////////
+
+#pragma once
+
+#include "IRetainedTrack.h"
+
+namespace musik {
+    namespace core {
+        namespace sdk {
+
+            class ITrackList {
+                public:
+                    virtual size_t Count() = 0;
+                    virtual IRetainedTrack* GetRetainedTrack(size_t index) = 0;
+                    virtual unsigned long long GetId(size_t index) = 0;
+                    virtual int IndexOf(unsigned long long id) = 0;
+            };
+
+        }
+    }
+}
+