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LayerManager.cpp
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LayerManager.cpp
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// LayerManager.cpp: implementation of the CLayerManager class.
//
//////////////////////////////////////////////////////////////////////
#include "stdafx.h"
#include "PacketSender.h"
#include "LayerManager.h"
#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
CLayerManager::CLayerManager()
: m_nLayerCount( 0 ),
mp_sListHead( NULL ),
mp_sListTail( NULL ),
m_nTop( -1 )
{
}
CLayerManager::~CLayerManager()
{
}
void CLayerManager::AddLayer(CBaseLayer *pLayer)
{
mp_aLayers[ m_nLayerCount++ ] = pLayer ;
}
CBaseLayer* CLayerManager::GetLayer(int nindex)
{
return mp_aLayers[ nindex ] ;
}
CBaseLayer* CLayerManager::GetLayer(char *pName)
{
for ( int i = 0 ; i < m_nLayerCount ; i++ )
{
CString stName( pName ) ;
if ( !stName.Compare( mp_aLayers[i]->GetLayerName( ) ) )
return mp_aLayers[i] ;
}
return NULL ;
}
void CLayerManager::ConnectLayers(char *pcList)
{
MakeList( pcList ) ;
LinkLayer( mp_sListHead ) ;
}
void CLayerManager::MakeList(char *pcList)
{
while( pcList != (char*) 0x01 )
{
char sBuff[ 100 ] ;
sscanf( pcList, "%s", sBuff ) ;
pcList = strchr( pcList, ' ' ) + 1 ;
PNODE pNode = AllocNode( sBuff ) ;
AddNode( pNode ) ;
}
}
CLayerManager::PNODE CLayerManager::AllocNode(char *pcName)
{
PNODE node = new NODE ;
ASSERT( node ) ;
strcpy( node->token, pcName ) ;
node->next = NULL ;
return node ;
}
void CLayerManager::AddNode(PNODE pNode)
{
if ( !mp_sListHead )
{
mp_sListHead = mp_sListTail = pNode ;
}
else
{
mp_sListTail->next = pNode ;
mp_sListTail = pNode ;
}
}
void CLayerManager::Push(CBaseLayer *pLayer)
{
if ( m_nTop >= MAX_LAYER_NUMBER )
{
#ifdef _DEBUG
TRACE( "The Stack is full.. so cannot run the push operation.. \n" ) ;
#endif
return ;
}
mp_Stack[ ++m_nTop ] = pLayer ;
}
CBaseLayer* CLayerManager::Pop()
{
if ( m_nTop < 0 )
{
#ifdef _DEBUG
TRACE( "The Stack is empty.. so cannot run the pop operation.. \n" ) ;
#endif
return NULL ;
}
CBaseLayer* pLayer = mp_Stack[ m_nTop ] ;
mp_Stack[ m_nTop ] = NULL ;
m_nTop-- ;
return pLayer ;
}
CBaseLayer* CLayerManager::Top()
{
if ( m_nTop < 0 )
{
#ifdef _DEBUG
TRACE( "The Stack is empty.. so cannot run the top operation.. \n" ) ;
#endif
return NULL ;
}
return mp_Stack[ m_nTop ] ;
}
void CLayerManager::LinkLayer(PNODE pNode)
{
CBaseLayer* pLayer = NULL ;
while ( pNode )
{
if ( !pLayer )
pLayer = GetLayer( pNode->token ) ;
else
{
if ( *pNode->token == '(' )
Push( pLayer ) ;
else if ( *pNode->token == ')' )
Pop( ) ;
else
{
char cMode = *pNode->token ;
char* pcName = pNode->token + 1 ;
pLayer = GetLayer( pcName ) ;
switch( cMode )
{
case '*' : Top( )->SetUpperUnderLayer( pLayer ) ; break ;
case '+' : Top( )->SetUpperLayer( pLayer ) ; break ;
case '-' : Top( )->SetUnderLayer( pLayer ) ; break ;
}
}
}
pNode = pNode->next ;
}
}
void CLayerManager::DeAllocLayer()
{
for ( int i = 0 ; i < this->m_nLayerCount ; i ++ )
delete this->mp_aLayers[ i ] ;
}