/*
 * The Apache Software License, Version 1.1
 * 
 * Copyright (c) 1999-2000 The Apache Software Foundation.  All rights
 * reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 * 
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:  
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 * 
 * 4. The names "Xerces" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written 
 *    permission, please contact apache\@apache.org.
 * 
 * 5. Products derived from this software may not be called "Apache",
 *    nor may "Apache" appear in their name, without prior written
 *    permission of the Apache Software Foundation.
 * 
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 * 
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation, and was
 * originally based on software copyright (c) 1999, International
 * Business Machines, Inc., http://www.ibm.com .  For more information
 * on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

/*
 * $Log: XMLHttpRequest.h,v $
 * Revision 1.3  2000/06/03 00:29:04  andyh
 * COM Wrapper changes from Curt Arnold
 *
 * Revision 1.2  2000/03/30 02:00:09  abagchi
 * Initial checkin of working code with Copyright Notice
 *
 */

#ifndef ___xmlhttprequest_h___
#define ___xmlhttprequest_h___

#include <dom/DOM_Document.hpp>
#include "IXMLDOMNodeImpl.h"

#include "resource.h"       // main symbols

class ATL_NO_VTABLE CXMLHttpRequest : 
	public CComObjectRootEx<CComSingleThreadModel>,
	public CComCoClass<CXMLHttpRequest, &CLSID_XMLHTTPRequest>,
	public IObjectSafetyImpl<CXMLHttpRequest, INTERFACESAFE_FOR_UNTRUSTED_CALLER>,
	public IDispatchImpl<IXMLHttpRequest, &IID_IXMLHttpRequest, &LIBID_Xerces>,
	public IObjectWithSiteImpl<CXMLHttpRequest>,
	public ISupportErrorInfo,
	public CWindowImpl<CXMLHttpRequest, CWindow, CWinTraits<0,0> >
{
public:
	CXMLHttpRequest();

	HRESULT FinalConstruct();
	void	FinalRelease();

	//DECLARE_REGISTRY_RESOURCEID(IDR_XMLHTTPREQUEST)
	static HRESULT WINAPI UpdateRegistry(BOOL bRegister);

DECLARE_NOT_AGGREGATABLE(CXMLHttpRequest)

DECLARE_PROTECT_FINAL_CONSTRUCT()

BEGIN_COM_MAP(CXMLHttpRequest)
	COM_INTERFACE_ENTRY(IXMLHttpRequest)
	COM_INTERFACE_ENTRY(IDispatch)
	COM_INTERFACE_ENTRY(IObjectSafety)
	COM_INTERFACE_ENTRY(IObjectWithSite)
	COM_INTERFACE_ENTRY(ISupportErrorInfo)
END_COM_MAP()

	DECLARE_WND_CLASS(_T("XMLHttpRequestMonitor")) 

BEGIN_MSG_MAP(CMonitorWnd)
	MESSAGE_HANDLER(MSG_READY_STATE_CHANGE,	OnReadyStateChange)
END_MSG_MAP()

	LRESULT OnReadyStateChange(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);


	// ISupportsErrorInfo
	STDMETHOD(InterfaceSupportsErrorInfo)(REFIID riid);

	// IXMLHttpRequest methods
	STDMETHOD(open)(/*[in]*/ BSTR bstrMethod, /*[in]*/ BSTR bstrUrl, /*[in,optional]*/ VARIANT varAsync, /*[in,optional]*/ VARIANT bstrUser, /*[in,optional]*/ VARIANT bstrPassword);
	STDMETHOD(setRequestHeader)(/*[in]*/ BSTR bstrHeader, /*[in]*/ BSTR bstrValue);
	STDMETHOD(getResponseHeader)(/*[in]*/ BSTR bstrHeader, /*[out, retval]*/ BSTR * pbstrValue);
	STDMETHOD(getAllResponseHeaders)(/*[out, retval]*/ BSTR * pbstrHeaders);
	STDMETHOD(send)(/*[in, optional]*/ VARIANT varBody);
	STDMETHOD(abort)();
	STDMETHOD(get_status)(/*[out, retval]*/ long * plStatus);
	STDMETHOD(get_statusText)(/*[out, retval]*/ BSTR * pbstrStatus);
	STDMETHOD(get_responseXML)(/*[out, retval]*/ IDispatch ** ppBody);
	STDMETHOD(get_responseText)(/*[out, retval]*/ BSTR * pbstrBody);
	STDMETHOD(get_responseBody)(/*[out, retval]*/ VARIANT * pvarBody);
	STDMETHOD(get_responseStream)(/*[out, retval]*/ VARIANT * pvarBody);
	STDMETHOD(get_readyState)(/*[out, retval]*/ long * plState);
	STDMETHOD(put_onreadystatechange)(/*[in]*/ IDispatch * pReadyStateSink);

private:

	LPDISPATCH	  m_pOnReadyStateChange;
	bool		  m_bAbort; 	
	HANDLE		  m_hThread;		
	long		  m_lReadyState;
	bool		  m_bAsync;	
	_bstr_t		  m_Method;
	_bstr_t		  m_HostName;	
	INTERNET_PORT m_Port;
	_bstr_t		  m_URLPath;
	_bstr_t		  m_User;
	_bstr_t		  m_Password;
	DWORD		  m_dwStatus;
	_bstr_t		  m_StatusText;	
	_bstr_t		  m_ResponseHeaders;
	CSimpleMap<_bstr_t, _bstr_t>  m_RequestHeaderMap;
	HWND		  m_HwndParent;		
 
	PBYTE		  m_pBody;
	long		  m_lBodyLength;
	PBYTE		  m_pResponseBody;
	long		  m_lResponseBodyLength;
	_bstr_t	      m_Error;	
	bool	      m_bSuccess;

	HWND GetParentWindow();

	static _bstr_t GetErrorMsg(DWORD rc);
	static void CALLBACK InternetStatusCallback(HINTERNET hInternet,
												DWORD dwContext,
												DWORD dwInternetStatus,
												LPVOID lpvStatusInformation,
												DWORD dwStatusInformationLength);
	static UINT APIENTRY SendThread(void *pParm);
	static HRESULT InitializeVarFromByte(VARIANT &varOut, const PBYTE pByte, long lSize);
};

typedef CComObject<CXMLHttpRequest> CXMLHttpRequestObj;

#endif // ___xmlhttprequest_h___
