C++ TOOL_EVENT::Category方法代码示例

void TOOL_MANAGER::dispatchInternal( const TOOL_EVENT& aEvent )
{
    // iterate over all registered tools
    for( auto it = m_activeTools.begin(); it != m_activeTools.end(); /* iteration is done inside */)
    {
        auto curIt = it;
        TOOL_STATE* st = m_toolIdIndex[*it];
        ++it;       // it might be overwritten, if the tool is removed the m_activeTools deque

        // the tool state handler is waiting for events (i.e. called Wait() method)
        if( st->pendingWait )
        {
            if( st->waitEvents.Matches( aEvent ) )
            {
                // By default, only messages are passed further
                m_passEvent = ( aEvent.Category() == TC_MESSAGE );

                // got matching event? clear wait list and wake up the coroutine
                st->wakeupEvent = aEvent;
                st->pendingWait = false;
                st->waitEvents.clear();

                if( st->cofunc && !st->cofunc->Resume() )
                {
                    if( finishTool( st, false ) ) // The couroutine has finished
                        it = m_activeTools.erase( curIt );
                }

                // If the tool did not request to propagate
                // the event to other tools, we should stop it now
                if( !m_passEvent )
                    break;
            }
        }
    }

    for( TOOL_STATE* st : ( m_toolState | boost::adaptors::map_values ) )
    {
        // no state handler in progress - check if there are any transitions (defined by
        // Go() method that match the event.
        if( !st->pendingWait && !st->transitions.empty() )
        {
            for( TRANSITION& tr : st->transitions )
            {
                if( tr.first.Matches( aEvent ) )
                {
                    auto func_copy = tr.second;

                    // if there is already a context, then store it
                    if( st->cofunc )
                        st->Push();

                    st->cofunc = new COROUTINE<int, const TOOL_EVENT&>( std::move( func_copy ) );

                    // as the state changes, the transition table has to be set up again
                    st->transitions.clear();

                    // got match? Run the handler.
                    st->cofunc->Call( aEvent );

                    if( !st->cofunc->Running() )
                        finishTool( st ); // The couroutine has finished immediately?

                    // there is no point in further checking, as transitions got cleared
                    break;
                }
            }
        }
    }
}

void TOOL_MANAGER::dispatchInternal( const TOOL_EVENT& aEvent )
{
    // iterate over all registered tools
    for( auto it = m_activeTools.begin(); it != m_activeTools.end(); ++it )
    {
        TOOL_STATE* st = m_toolIdIndex[*it];

        // forward context menu events to the tool that created the menu
        if( aEvent.IsMenu() )
        {
            if( *it != m_menuOwner )
                continue;
        }

        // the tool state handler is waiting for events (i.e. called Wait() method)
        if( st->pendingWait )
        {
            if( st->waitEvents.Matches( aEvent ) )
            {
                // By default only messages are passed further
                m_passEvent = ( aEvent.Category() == TC_MESSAGE );

                // got matching event? clear wait list and wake up the coroutine
                st->wakeupEvent = aEvent;
                st->pendingWait = false;
                st->waitEvents.clear();

                if( st->cofunc )
                {
                    setActiveState( st );
                    bool end = !st->cofunc->Resume();

                    if( end )
                        it = finishTool( st );
                }

                // If the tool did not request to propagate
                // the event to other tools, we should stop it now
                if( !m_passEvent )
                    break;
            }
        }
    }

    for( auto& state : m_toolState )
    {
        TOOL_STATE* st = state.second;
        bool finished = false;

        // no state handler in progress - check if there are any transitions (defined by
        // Go() method that match the event.
        if( !st->transitions.empty() )
        {
            for( TRANSITION& tr : st->transitions )
            {
                if( tr.first.Matches( aEvent ) )
                {
                    auto func_copy = tr.second;

                    // if there is already a context, then push it on the stack
                    // and transfer the previous view control settings to the new context
                    if( st->cofunc )
                    {
                        auto vc = st->vcSettings;
                        st->Push();
                        st->vcSettings = vc;
                    }

                    st->cofunc = new COROUTINE<int, const TOOL_EVENT&>( std::move( func_copy ) );

                    // as the state changes, the transition table has to be set up again
                    st->transitions.clear();

                    // got match? Run the handler.
                    setActiveState( st );
                    st->idle = false;
                    st->cofunc->Call( aEvent );

                    if( !st->cofunc->Running() )
                        finishTool( st ); // The couroutine has finished immediately?

                    // if it is a message, continue processing
                    finished = !( aEvent.Category() == TC_MESSAGE );

                    // there is no point in further checking, as transitions got cleared
                    break;
                }
            }
        }

        if( finished )
            break;      // only the first tool gets the event
    }
}