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