File: clStringHistory.cpp

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#include "clStringHistory.h"

clStringHistory::clStringHistory()
    : m_index ( 0 )
{
}

clStringHistory::~clStringHistory()
{
}

bool clStringHistory::Current( wxString& str )
{
    if ( m_strings.IsEmpty() || ( m_index < 0 || m_index >= ( int ) m_strings.GetCount() ) )
        return false;

    str = m_strings.Item( m_index );
    return true;
}

bool clStringHistory::Next( wxString& str )
{
    if ( CanNext() ) {
        ++m_index;
        str = m_strings.Item( m_index );
        return true;
    }
    return false;
}

bool clStringHistory::Previous( wxString& str )
{
    if ( CanPrev() ) {
        --m_index;
        str = m_strings.Item( m_index );
        return true;
    }
    return false;
}

bool clStringHistory::CanNext()
{
    if ( m_strings.IsEmpty() ) return false;
    return ( m_index + 1 ) < ( int )m_strings.GetCount();
}

bool clStringHistory::CanPrev()
{
    if ( m_strings.IsEmpty() ) return false;
    return ( m_index - 1 ) >= 0;
}