GUI2K4.GUIDynArrayPage

//==============================================================================
//  Created on: 11/15/2003
//  Specialized array property page for dynamic arrays
//
//  Written by Ron Prestenback
//  © 2003, Epic Games, Inc. All Rights Reserved
//==============================================================================

class GUIDynArrayPage extends GUIArrayPropPage;

struct ArrayControl
{
    var() GUIButton                 b_New;
    var() GUIButton                 b_Remove;
};

var() array<ArrayControl>               ArrayButton;

var() string SizingCaption;
var() localized string  NewText, RemoveText;

function InitComponent(GUIController MyController, GUIComponent MyOwner)
{
    Super.InitComponent(MyController, MyOwner);
    li_Values.OnAdjustTop = InternalOnAdjustTop;

    SizingCaption = RemoveText;
}

// Create buttons and controls for array members
function InitializeList()
{
    local int i;
    local float AW, AL, Y;

    // ItemsPerPage is set in PreDraw, so if li_Values hasn't received a call to PreDraw() yet, stop here
    if ( !li_Values.bPositioned )
        return;

    bListInitialized = True;

    // Unset bInit so that InternalOnPreDraw won't call InitializeList() again
    if (Item.RenderType == PIT_Check)
        MOType = "XInterface.moCheckBox";

    else if (Item.RenderType == PIT_Select)
        MOType = "XInterface.moComboBox";

    AW = li_Values.ActualWidth();
    AL = li_Values.ActualLeft();

    Clear();
    for (i = 0; i < PropValue.Length; i++)
        AddListItem(i);

    ArrayButton.Length = li_Values.ItemsPerPage;

    Y = li_Values.ClientBounds[1];
    for (i = 0; i < li_Values.ItemsPerPage; i++)
    {
        ArrayButton[i] = AddButton(i);

        ArrayButton[i].b_New.WinLeft = ArrayButton[i].b_New.RelativeLeft((AL + AW) + 5);
        ArrayButton[i].b_Remove.WinLeft = ArrayButton[i].b_New.WinLeft;

        ArrayButton[i].b_New.WinTop = ArrayButton[i].b_New.RelativeTop(Y);
        ArrayButton[i].b_Remove.WinTop = ArrayButton[i].b_Remove.RelativeTop(Y);

        Y += li_Values.ItemHeight;
    }

    UpdateListCaptions();
    UpdateListValues();
    UpdateButtons();
    RemapComponents();
}

function ArrayControl AddButton(int Index)
{
    local ArrayControl AC;

    AC.b_New = GUIButton(AddComponent("XInterface.GUIButton",True));
    AC.b_New.TabOrder = Index+1;
    AC.b_New.Tag = Index;
    AC.b_New.OnClick = InternalOnClick;
    AC.b_New.Caption = NewText;
    AC.b_New.SizingCaption = SizingCaption;

    AC.b_Remove = GUIButton(AddComponent("XInterface.GUIButton",True));
    AC.b_Remove.TabOrder = Index+1;
    AC.b_Remove.Tag = Index;
    AC.b_Remove.OnClick = InternalOnClick;
    AC.b_Remove.Caption = RemoveText;
    AC.b_Remove.SizingCaption = SizingCaption;

    return AC;
}

function Clear()
{
    local int i;

    for (i = 0; i < ArrayButton.Length; i++)
    {
        RemoveComponent(ArrayButton[i].b_New, True);
        RemoveComponent(ArrayButton[i].b_Remove, True);
    }

    ArrayButton.Remove(0, ArrayButton.Length);
    Super.Clear();
    RemapComponents();
}

// Resets the button captions and roles to correspond to the currently displayed array members
// (Makes sure that the last button says "New" while all others say "Remove"
function UpdateButtons()
{
    local int i, j;

    j = li_Values.Top;

    for (i = 0; i < ArrayButton.Length; i++)
    {

        SetElementState(i, j == li_Values.Elements.Length && j < li_Values.Top + li_Values.ItemsPerPage, j < li_Values.Elements.Length && j < li_Values.Top + li_Values.ItemsPerPage);
        SetElementCaption(i, j);
        j++;
    }
}

protected function SetElementState(int Index, bool bNewOn, bool bRemoveOn)
{
    if (Index < 0 || Index >= ArrayButton.Length)
        return;

    ArrayButton[Index].b_New.TabOrder = Index + 1;
    ArrayButton[Index].b_Remove.TabOrder = Index + 1;
    if (ArrayButton[Index].b_New.bVisible != bNewOn)
        ArrayButton[Index].b_New.SetVisibility(bNewOn);

    if (ArrayButton[Index].b_Remove.bVisible != bRemoveOn)
        ArrayButton[Index].b_Remove.SetVisibility(bRemoveOn);

    if (bNewOn)
        EnableComponent(ArrayButton[Index].b_New);
    else DisableComponent(ArrayButton[Index].b_New);

    if (bRemoveOn)
        EnableComponent(ArrayButton[Index].b_Remove);
    else DisableComponent(ArrayButton[Index].b_Remove);
}

protected function SetElementCaption(int ButtonArrayIndex, int ListElementIndex)
{
    ArrayButton[ButtonArrayIndex].b_New.Caption = NewText;
    ArrayButton[ButtonArrayIndex].b_New.Tag = ListElementIndex;

    ArrayButton[ButtonArrayIndex].b_Remove.Caption = RemoveText;
    ArrayButton[ButtonArrayIndex].b_Remove.Tag = ListElementIndex;
}

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

    if ( Super.InternalOnClick(Sender) )
        return true;

    if (GUIButton(Sender) != None)
    {
        for (i = 0; i < ArrayButton.Length; i++)
        {
            if (Sender == ArrayButton[i].b_New)
            {
                PropValue.Insert(ArrayButton[i].b_New.Tag, 1);
                AddListItem(ArrayButton[i].b_New.Tag).SetFocus(None);
                break;
            }

            if (Sender == ArrayButton[i].b_Remove)
            {
                if (ArrayButton[i].b_Remove.Tag != -1 && ArrayButton[i].b_Remove.Tag < li_Values.Elements.Length)
                {
                    li_Values.RemoveItem(ArrayButton[i].b_Remove.Tag);
                    PropValue.Remove(ArrayButton[i].b_Remove.Tag, 1);
                }
                break;
            }
        }

        if (i < ArrayButton.Length)
        {
            UpdateListCaptions();
            UpdateButtons();
            RemapComponents();
        }

    }

    return false;
}

function InternalOnAdjustTop(GUIComponent Sender)
{
    UpdateButtons();
    li_Values.InternalOnAdjustTop(Sender);
}

function bool FloatingPreDraw(Canvas C)
{
    local float XL, YL, XL2, YL2;

    if ( bInit )
    {
        b_OK.Style.TextSize(C, MSAT_Blurry, NewText, XL, YL, FNS_Medium);
        b_OK.Style.TextSize(C, MSAT_Blurry, RemoveText, XL2, YL2, FNS_Medium);

        if ( XL > XL2 )
            SizingCaption = NewText;
        else SizingCaption = RemoveText;
    }

    return Super.FloatingPreDraw(C);

}

defaultproperties
{
     NewText="New"
     RemoveText="Remove"
}