109 lines
2.3 KiB
C++
109 lines
2.3 KiB
C++
#include "precompiled.h"
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# include "sr_sn_group.h"
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//# define SR_USE_TRACE1 // Const/Dest
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# include "sr_trace.h"
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//======================================= SrSnGroup ====================================
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const char* SrSnGroup::class_name = "Group";
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SrSnGroup::SrSnGroup ()
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:SrSn ( SrSn::TypeGroup, SrSnGroup::class_name )
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{
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SR_TRACE1 ( "Constructor" );
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_separator = false;
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}
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SrSnGroup::~SrSnGroup ()
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{
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SR_TRACE1 ( "Destructor" );
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remove_all ();
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}
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void SrSnGroup::capacity ( int c )
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{
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if ( c<=_children.size() ) return;
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_children.capacity ( c );
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}
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SrSn* SrSnGroup::get ( int pos ) const
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{
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if ( _children.size()==0 ) return 0;
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if ( pos<0 || pos>=_children.size() ) return _children.get(_children.size()-1);
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return _children.get(pos);
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}
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int SrSnGroup::search ( SrSn *n ) const
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{
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for ( int i=0; i<_children.size(); i++ )
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{ if ( _children[i]==n ) return i; }
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return -1;
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}
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void SrSnGroup::add ( SrSn *sn, int pos )
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{
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sn->ref(); // Increment reference counter
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if ( pos<0 || pos>=_children.size() ) // Append
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{ _children.push() = sn;
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}
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else // Insert
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{ _children.insert(pos) = sn;
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}
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}
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SrSn *SrSnGroup::remove ( int pos )
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{
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SR_TRACE3 ( "remove "<<pos );
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SrSn *sn;
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if ( _children.empty() ) // empty
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{ return 0;
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}
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else if ( pos<0 || pos>=_children.size() ) // get last child
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{ sn = _children.pop();
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}
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else // remove item in the middle
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{ sn = _children[pos];
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_children.remove(pos);
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}
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int oldref = sn->getref();
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sn->unref();
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return oldref>1? sn:0;
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}
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SrSn *SrSnGroup::remove ( SrSn *n )
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{
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int pos = search ( n );
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if ( pos<0 ) return 0;
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return remove ( pos );
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}
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SrSn *SrSnGroup::replace ( int pos, SrSn *sn )
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{
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SR_TRACE3 ( "replace "<<pos );
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if ( _children.empty() || pos<0 || pos>=_children.size() ) return 0; // invalid pos
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sn->ref();
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SrSn *old = _children[pos];
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_children[pos] = sn;
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int oldref = old->getref();
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old->unref();
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return oldref>1? old:0;
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}
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void SrSnGroup::remove_all ()
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{
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SR_TRACE3 ( "remove_all" );
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while ( !_children.empty() ) _children.pop()->unref();
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}
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//======================================= EOF ====================================
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