// $Revision: 1.5 $
// Copyright (C) 1995 Taligent, Inc. All rights reserved.
#ifndef Taligent_SCROLLINGVIEW
#include <Taligent/ScrollingView.h>
#endif
#ifndef TaligentSamples_WEBVIEW
#include "WebView.h"
#endif
#ifndef TaligentSamples_WEBMODEL
#include "WebModel.h"
#endif

MCollectibleDefinitionsMacro(TWebView, kOriginalVersion);

TWebView::TWebView()
    : TDocumentComponentView(),
	fScrollingViewAlias(NIL), 
	fTextViewAlias(NIL),
	fTitleViewAlias(NIL)
{
}

TWebView::TWebView(TGUIBundle* bundleToAlias)
    : TDocumentComponentView(bundleToAlias),
	fScrollingViewAlias(NIL),
	fTextViewAlias(NIL),
	fTitleViewAlias(NIL)
{
}

TWebView::TWebView(const TWebView& source)
    : TDocumentComponentView(source),
    fScrollingViewAlias(NIL),
    fTextViewAlias(NIL),
	fTitleViewAlias(NIL)
{
}

TWebView::~TWebView()
{
}

TStream&
TWebView::operator>>=(TStream& toStream) const
{
	::WriteVersion(toStream);
	TDocumentComponentView::operator>>=(toStream);
	return toStream;
}

TStream&
TWebView::operator<<=(TStream& fromStream)
{
	::ReadVersion(fromStream, kOriginalVersion, kOriginalVersion);
	TDocumentComponentView::operator<<=(fromStream);
	return fromStream;
}

void
TWebView::AdoptHypertextView(TView* adoptScrollingView, TView* textViewAlias)
{
	if (fScrollingViewAlias != 0) {
		delete OrphanChild(*fScrollingViewAlias);
	}
	fTextViewAlias = textViewAlias;
	fScrollingViewAlias = adoptScrollingView;
	AdoptChild(fScrollingViewAlias);
	HandleAllocatedAreaChanged(GetAllocatedArea());
}

void
TWebView::HandleAllocatedAreaChanged(const TGArea& newArea)
{
	// calculate the total view dimensions
	TGRect webViewArea = newArea.GetBounds();
	GCoordinate rightSide = webViewArea.GetBottomRight().fX;
	PlaceLabelView(newArea);
	if (fTitleViewAlias != NIL) {
		GCoordinate titleHeight = 
			fTitleViewAlias->GetAllocatedAreaInParent().GetBottomRight().fY;
		if (fScrollingViewAlias != NIL) {
			TGRect textViewArea(TGPoint(0,titleHeight),
								webViewArea.GetBottomRight());
			fScrollingViewAlias->SetAllocatedAreaInParent(textViewArea);
			if (fTextViewAlias != NIL) {
				TScrollingView* scrollingView = 0;
				DynamicCastTo(scrollingView, fScrollingViewAlias);
				if (scrollingView != 0) {
					TGPoint clipSize = scrollingView->GetClipRectSize();
					TGArea textViewArea;
					fTextViewAlias->GetAllocatedArea(textViewArea);
					TGPoint textSize = textViewArea.GetBounds().GetSize();
					textSize.fX = clipSize.fX;
					fTextViewAlias->SetAllocatedArea(TGRect(TGPoint(0,0),
															textSize));
				}
			}
		}
	}
}

void
TWebView::HandleAfterConnectionToViewRoot()
{
	// This call to the parent's HandleAfterConnectionToViewRoot() must
	// be present whenever you override this member function.
	TDocumentComponentView::HandleAfterConnectionToViewRoot();
	if (fTitleViewAlias == NIL) {
		CreateTitleView();
	}
}

void
TWebView::CreateTitleView()
{
	if (fTitleViewAlias != NIL) {
		delete OrphanChild(*fTitleViewAlias);
		fTitleViewAlias = NIL;
	}
	const TModelPointerTo<TWebModel> model(GetModelReference());
	TStandardText labelText = model->GetPageTitle();
	fTitleViewAlias = new TLabelView(new TTextLabel(labelText));
	AdoptChild(fTitleViewAlias);
	PlaceLabelView(GetAllocatedArea());
}

void
TWebView::PlaceLabelView(const TGArea& mainViewArea)
{
	if (fTitleViewAlias != NIL) {
		TGRect titleRect = fTitleViewAlias->GetLooseFitBounds();
		GCoordinate titleHeight = titleRect.GetBottomRight().fY;
		GCoordinate rightSide = mainViewArea.GetBounds().GetBottomRight().fX;
		TGRect titleViewArea(TGPoint(0,0), TGPoint(rightSide, titleHeight));
		fTitleViewAlias->SetAllocatedAreaInParent(titleViewArea);
	}
}

void 
TWebView::HandleModelChanged(const TNotification& change)
{
	CreateTitleView();
	Invalidate();
}

bool
TWebView::DistributePositionalEvent(TEvent& event,
									const TGPoint& local)
{
	// This code masks a small problem that causes the selection feedback to
    // disappear.
	bool result =
		TDocumentComponentView::DistributePositionalEvent(event, local);
	TMouseDownEvent* eventPointer = 0;
	::DynamicCastTo(eventPointer, &event);
	if (eventPointer != 0) {
		Invalidate();
	}
	return result;
}