// $Revision: 1.7 $
// Copyright (c) 1995 Taligent, Inc.  All rights reserved.

#ifndef TaligentSamples_COLORACCEPTORVIEW
#include "ColorAcceptorView.h"
#endif

#ifndef Taligent_GRAFPORT
#include <Taligent/GrafPort.h>
#endif

#ifndef Taligent_ASSERTIONS
#include <Taligent/Assertions.h>
#endif

#ifndef TaligentSamples_COLORSCRAPITEM
#include "ColorScrapItem.h"
#endif

MCollectibleDefinitionsMacro(TColorAcceptorView, 0);

TColorAcceptorView::TColorAcceptorView() 
    : TSimpleView(), MDropAcceptor(TViewHandle(*this)), fColor(1, 1, 1)
{
}

TColorAcceptorView::TColorAcceptorView(const TGPoint& extent, const TColor& color) 
    : TSimpleView(extent), MDropAcceptor(TViewHandle(*this)), fColor(color)
{
}

TColorAcceptorView::~TColorAcceptorView()
{
}

TColorAcceptorView::TColorAcceptorView(const TColorAcceptorView& source)
    : TSimpleView(), MDropAcceptor(TViewHandle(*this)), fColor(1, 1, 1)
{
    // We need this or else the compiler complains that in MCollectibleDefinitionsMacro
    // it can't construct an object of type "TColorAcceptorView" from a "const TColorAcceptorView" expression.

     Assertion(false, "cannot copy TColorAcceptorView.");
}

void
TColorAcceptorView::DrawContents(TGrafPort& port) const
{
    TGArea area;
    GetAllocatedArea(area);
    port.Draw(area.GetBounds(), TFillAndFrameBundle(fColor, TRGBColor(0,0,0), 1.0, TPen::kInsetFrame));
}

bool 
TColorAcceptorView::ChoosePreferredType(
    const TGPoint& location,
    const TSequenceOf<TTypeDescription>& availableTypes,
    TTypeDescription& chosenType) const
{
    bool result = false;

    TIteratorOver<TTypeDescription>* iter = availableTypes.CreateIterator();
    for (const TTypeDescription* td = iter->First(); td; td = iter->Next()) {
        if (*td == TColorScrapItem::kScrapItemType) {
            chosenType = *td;
            result = true;
            break;
        } 
    }
    delete iter;

    return result;
}

bool 
TColorAcceptorView::AcceptDrop(
    const TGPoint& location,
    const TTypeDescription& typeDescription,
    const TScrapItem& scrapItem)
{
    bool result = false;

    if (typeDescription == TColorScrapItem::kScrapItemType) {
        fColor = ((TColorScrapItem&)scrapItem).GetColor();
        Invalidate();

        result = true;
    } 

    return result;
}

void
TColorAcceptorView::HandleAllocatedAreaChanged(const TGArea&)
{
    InvalidateAll();
}