110 lines
3.2 KiB
C++
110 lines
3.2 KiB
C++
/*
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* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef WEBRTC_SYSTEM_WRAPPERS_INTERFACE_LIST_WRAPPER_H_
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#define WEBRTC_SYSTEM_WRAPPERS_INTERFACE_LIST_WRAPPER_H_
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#include "constructor_magic.h"
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namespace webrtc {
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class CriticalSectionWrapper;
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class ListItem
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{
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friend class ListWrapper;
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public:
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ListItem(const void* ptr);
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ListItem(const unsigned int item);
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virtual ~ListItem();
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void* GetItem() const;
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unsigned int GetUnsignedItem() const;
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protected:
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ListItem* next_;
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ListItem* prev_;
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private:
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const void* item_ptr_;
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const unsigned int item_;
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DISALLOW_COPY_AND_ASSIGN(ListItem);
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};
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class ListWrapper
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{
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public:
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ListWrapper();
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virtual ~ListWrapper();
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// Returns the number of elements stored in the list.
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unsigned int GetSize() const;
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// Puts a pointer to anything last in the list.
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int PushBack(const void* ptr);
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// Puts a pointer to anything first in the list.
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int PushFront(const void* ptr);
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// Puts a copy of the specified integer last in the list.
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int PushBack(const unsigned int item_id);
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// Puts a copy of the specified integer first in the list.
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int PushFront(const unsigned int item_id);
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// Pops the first ListItem from the list
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int PopFront();
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// Pops the last ListItem from the list
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int PopBack();
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// Returns true if the list is empty
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bool Empty() const;
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// Returns a pointer to the first ListItem in the list.
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ListItem* First() const;
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// Returns a pointer to the last ListItem in the list.
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ListItem* Last() const;
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// Returns a pointer to the ListItem stored after item in the list.
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ListItem* Next(ListItem* item) const;
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// Returns a pointer to the ListItem stored before item in the list.
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ListItem* Previous(ListItem* item) const;
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// Removes item from the list.
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int Erase(ListItem* item);
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// Insert list item after existing_previous_item. Please note that new_item
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// must be created using new ListItem(). The map will take ownership of
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// new_item following a successfull insert. If insert fails new_item will
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// not be released by the List
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int Insert(ListItem* existing_previous_item,
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ListItem* new_item);
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// Insert list item before existing_next_item. Please note that new_item
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// must be created using new ListItem(). The map will take ownership of
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// new_item following a successfull insert. If insert fails new_item will
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// not be released by the List
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int InsertBefore(ListItem* existing_next_item,
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ListItem* new_item);
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private:
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void PushBackImpl(ListItem* item);
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void PushFrontImpl(ListItem* item);
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CriticalSectionWrapper* critical_section_;
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ListItem* first_;
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ListItem* last_;
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unsigned int size_;
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DISALLOW_COPY_AND_ASSIGN(ListWrapper);
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};
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} //namespace webrtc
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#endif // WEBRTC_SYSTEM_WRAPPERS_INTERFACE_LIST_WRAPPER_H_
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