XInterface.GUIHorzList

// ====================================================================
//  Class:  UT2K4UI.GUIHorzList
//  Parent: UT2K4UI.GUIListBase
//
//  <Enter a description here>
// ====================================================================

class GUIHorzList extends GUIListBase
        Native;

// (cpptext)
// (cpptext)
// (cpptext)
// (cpptext)

event int CalculateIndex(optional bool bRequireValidIndex)
{
    local int i, NewIndex;

    i = Top + ((Controller.MouseX - ClientBounds[0]) / ItemWidth);
    if ( i >= ItemCount && bRequireValidIndex )
        i = -1;

    NewIndex = Min( i, ItemCount - 1 );
    return NewIndex;
}

function bool InternalOnClick(GUIComponent Sender)
{
    local int NewIndex;

    if ( !IsInClientBounds() || ItemsPerPage == 0 )
        return false;

    NewIndex = CalculateIndex();
    SetIndex(NewIndex);
    return true;
}

function bool InternalOnKeyType(out byte Key, optional string Unicode)
{
    // Add code to jump to next line with Char

    return false;
}

function WheelUp()
{
    if (MyScrollBar!=None)
        GUIHorzScrollBar(MyScrollBar).WheelUp();
    else
    {
        if (!Controller.CtrlPressed)
            ScrollLeft();
        else
            PgUp();
    }
}

function WheelDown()
{
    if (MyScrollBar!=None)
        GUIHorzScrollBar(MyScrollBar).WheelDown();
    else
    {
        if (!Controller.CtrlPressed)
            ScrollRight();
        else
            PgDn();
    }
}

function bool MoveLeft()
{
    if ( (ItemCount<2) || (Index==0) ) return true;

    Index = max(0,Index-1);

    if ( (Index<Top) || (Index>Top+ItemsPerPage) )
    {
        Top = Index;
        MyScrollBar.AlignThumb();
    }
    return true;
}

function bool MoveRight()
{
    if ( (ItemCount<2) || (Index==ItemCount-1) ) return true;

    Index = min(Index+1,ItemCount-1);
    if (Index<Top)
    {
        Top = Index;
        MyScrollBar.AlignThumb();
    }
    else if (Index>=Top+ItemsPerPage)
    {
        Top = Index-ItemsPerPage+1;
        MyScrollBar.AlignThumb();
    }
    return true;
}

function ScrollLeft()
{
    MoveLeft();
}

function ScrollRight()
{
    MoveRight();
}

function Home()
{
    if (ItemCount<2) return;

    SetIndex(0);
    Top = 0;
    MyScrollBar.AlignThumb();

}

function End()
{
    if (ItemCount<2) return;

    Top = ItemCount - ItemsPerPage;
    if (Top<0)
        Top = 0;

    SetIndex(ItemCount-1);
    MyScrollBar.AlignThumb();
}

function PgUp()
{

    if (ItemCount<2) return;

    Index -= ItemsPerPage;

    // Adjust to bounds
    if (Index < 0)
        Index = 0;

    // If new index
    if (Top + ItemsPerPage <= Index)        // If index is forward but not visible, jump to it
        Top = Index;
    else if (Index + ItemsPerPage < Top)    // Item is way too far
        Top = Index;
    else if (Index < Top)   // Item is 1 page or less away
        SetTopItem(Top - ItemsPerPage);

    SetIndex(Index);
    MyScrollBar.AlignThumb();
}

function PgDn()
{

    if (ItemCount<2) return;

    // Select item 1 page away from current selection
    Index += ItemsPerPage;

    // Adjust to bounds
    if (Index >= ItemCount)
        Index = ItemCount-1;


    if (Index < Top)  // If item is still before Top Item, go to it
        Top = Index;
    else if (Index - Top - ItemsPerPage >= ItemsPerPage)    // Too far away
        SetTopItem(Index);
    else if (Index - Top >= ItemsPerPage) // Just 1 page away
        SetTopItem(Top + ItemsPerPage);

    SetIndex(Index);
    MyScrollBar.AlignThumb();
}

defaultproperties
{
     bRequiresStyle=True
     OnClick=GUIHorzList.InternalOnClick
}