michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* vim: set ts=2 et sw=2 tw=80: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
michael@0:  * You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef mozilla_dom_quota_arraycluster_h__
michael@0: #define mozilla_dom_quota_arraycluster_h__
michael@0: 
michael@0: #include "mozilla/dom/quota/QuotaCommon.h"
michael@0: 
michael@0: #include "Client.h"
michael@0: 
michael@0: BEGIN_QUOTA_NAMESPACE
michael@0: 
michael@0: template <class ValueType, uint32_t Length = Client::TYPE_MAX>
michael@0: class ArrayCluster
michael@0: {
michael@0: public:
michael@0:   ArrayCluster()
michael@0:   {
michael@0:     mArrays.AppendElements(Length);
michael@0:   }
michael@0: 
michael@0:   nsTArray<ValueType>&
michael@0:   ArrayAt(uint32_t aIndex)
michael@0:   {
michael@0:     MOZ_ASSERT(aIndex < Length, "Bad index!");
michael@0:     return mArrays[aIndex];
michael@0:   }
michael@0: 
michael@0:   nsTArray<ValueType>&
michael@0:   operator[](uint32_t aIndex)
michael@0:   {
michael@0:     return ArrayAt(aIndex);
michael@0:   }
michael@0: 
michael@0:   bool
michael@0:   IsEmpty()
michael@0:   {
michael@0:     for (uint32_t index = 0; index < Length; index++) {
michael@0:       if (!mArrays[index].IsEmpty()) {
michael@0:         return false;
michael@0:       }
michael@0:     }
michael@0:     return true;
michael@0:   }
michael@0: 
michael@0:   template <class T>
michael@0:   void
michael@0:   AppendElementsTo(uint32_t aIndex, nsTArray<T>& aArray)
michael@0:   {
michael@0:     NS_ASSERTION(aIndex < Length, "Bad index!");
michael@0:     aArray.AppendElements(mArrays[aIndex]);
michael@0:   }
michael@0: 
michael@0:   template <class T>
michael@0:   void
michael@0:   AppendElementsTo(uint32_t aIndex, ArrayCluster<T, Length>& aArrayCluster)
michael@0:   {
michael@0:     NS_ASSERTION(aIndex < Length, "Bad index!");
michael@0:     aArrayCluster[aIndex].AppendElements(mArrays[aIndex]);
michael@0:   }
michael@0: 
michael@0:   template <class T>
michael@0:   void
michael@0:   AppendElementsTo(nsTArray<T>& aArray)
michael@0:   {
michael@0:     for (uint32_t index = 0; index < Length; index++) {
michael@0:       aArray.AppendElements(mArrays[index]);
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   template<class T>
michael@0:   void
michael@0:   AppendElementsTo(ArrayCluster<T, Length>& aArrayCluster)
michael@0:   {
michael@0:     for (uint32_t index = 0; index < Length; index++) {
michael@0:       aArrayCluster[index].AppendElements(mArrays[index]);
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   template<class T>
michael@0:   void
michael@0:   SwapElements(ArrayCluster<T, Length>& aArrayCluster)
michael@0:   {
michael@0:     for (uint32_t index = 0; index < Length; index++) {
michael@0:       mArrays[index].SwapElements(aArrayCluster.mArrays[index]);
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   void
michael@0:   Clear()
michael@0:   {
michael@0:     for (uint32_t index = 0; index < Length; index++) {
michael@0:       mArrays[index].Clear();
michael@0:     }
michael@0:   }
michael@0: 
michael@0: private:
michael@0:   nsAutoTArray<nsTArray<ValueType>, Length> mArrays;
michael@0: };
michael@0: 
michael@0: END_QUOTA_NAMESPACE
michael@0: 
michael@0: #endif // mozilla_dom_quota_arraycluster_h__