#include "layout.h"
#include <QPaintEvent>
#include <QTime>
#include <QPainter>
#include <QPaintEngine>
#include <QDebug>
#include <QAbstractEventDispatcher>

int layoutFilter::cRef(0);
QAbstractEventDispatcher::EventFilter layoutFilter::prevFilter(NULL);

static LRESULT CALLBACK HTMLayoutNotifyHandler(UINT uMsg, WPARAM wParam, LPARAM lParam, LPVOID vParam);
/*
bool eventFilter(void *message)
{
	LARGE_INTEGER t1;
	QueryPerformanceCounter(&t1);
	HTMLayoutTranslateMessage((MSG*)message);
	LARGE_INTEGER t2;
	QueryPerformanceCounter(&t2);
	LARGE_INTEGER freq;
	QueryPerformanceFrequency(&freq);
	//qDebug()<<(qreal)(qreal(t2.QuadPart-t1.QuadPart)/freq.QuadPart);
	return false;
}*/
Layout::Layout(QWidget *parent, Qt::WFlags flags)
	: QWidget(parent, flags)
	, htmlayout::event_handler(-1)
{
	setWindowFlags(Qt::Window);
	setUpdatesEnabled(false);
	
	BOOL bHandled;
	HTMLayoutProcND(winId(),WM_CREATE,0,0, &bHandled);
	HTMLayoutSetCallback(winId(),&HTMLayoutNotifyHandler,this); // attach handler of htmlayout events
	htmlayout::attach_event_handler(winId(),this); // attach handler of DOM events
	
	BOOL bOk=::HTMLayoutLoadFile(winId(), L"d:\\PTShell\\release\\Layout\\temp.html");
	//BOOL bOk=::HTMLayoutLoadFile(winId(), L"D:\\htmlayout\\html_samples\\grid\\sortable-grid.htm");
}

Layout::~Layout()
{
	BOOL bHandled;
	HTMLayoutProcND(winId(),WM_DESTROY,0,0, &bHandled);
}
bool Layout::winEvent( MSG * message, long * result ) 
{
	BOOL    bHandled = FALSE;
	LRESULT lr=HTMLayoutProcND(winId(),message->message,message->wParam,message->lParam, &bHandled);
	if (bHandled) return lr;

	QRect rect=contentsRect();
	QPoint pos=mapFromGlobal(QPoint(message->pt.x,message->pt.y));
	if (rect.contains(pos) && (message->message >= WM_MOUSEFIRST) && (message->message <= WM_MOUSELAST))
		return true;
	
	return QWidget::winEvent(message,result);
}

LRESULT Layout::OnAttachBehavior(LPNMHL_ATTACH_BEHAVIOR lpab )
{
	// attach custom behaviors
	htmlayout::event_handler *pb = htmlayout::behavior::find(lpab->behaviorName, lpab->element);
	if(pb)
	{
		lpab->elementTag  = pb;
		lpab->elementProc = htmlayout::behavior::element_proc;
		lpab->elementEvents = pb->subscribed_to;
	} else Q_ASSERT(FALSE);

	// this project includes two behavior implementationsL
	// behavior_hyperlink.cpp
	// behavior_command.cpp
	// to connect them into the chain of available 
	// behaviors - just include them into the project.
	return 0;
}

static LRESULT CALLBACK HTMLayoutNotifyHandler(UINT uMsg, WPARAM wParam, LPARAM lParam, LPVOID vParam)
{
	// all HTMLayout notification are comming here.
	NMHDR*  phdr = (NMHDR*)lParam;

	Layout* pView = static_cast<Layout*>(vParam);

	switch(phdr->code)
	{
	case HLN_CREATE_CONTROL:    return pView->OnCreateControl((LPNMHL_CREATE_CONTROL) lParam);
	case HLN_CONTROL_CREATED:   return pView->OnControlCreated((LPNMHL_CREATE_CONTROL) lParam);
	case HLN_DESTROY_CONTROL:   return pView->OnDestroyControl((LPNMHL_DESTROY_CONTROL) lParam);
	case HLN_LOAD_DATA:         return pView->OnLoadData((LPNMHL_LOAD_DATA) lParam);
	case HLN_DATA_LOADED:       return pView->OnDataLoaded((LPNMHL_DATA_LOADED)lParam);
	case HLN_DOCUMENT_COMPLETE: return pView->OnDocumentComplete();
	case HLN_ATTACH_BEHAVIOR:   return pView->OnAttachBehavior((LPNMHL_ATTACH_BEHAVIOR)lParam );
	}
	return 0;
}
BOOL Layout::on_script_call(HELEMENT he, LPCSTR name, UINT argc, json::value* argv, json::value& retval)
{
	return FALSE;
}