htmlviewwin.h

vc编写的

/*
 Copyright (c) 1999, kSet Lab 
 Author: Konstantin Bukreev 
 E-mail: [e-mail] 

 Created: 23.08.99 14:33:41
 Version: 1.0.0

 html view window
*/

#ifndef _HtmlViewWin_7715d762_5967_11d3_9284_0080adb811c5
#define _HtmlViewWin_7715d762_5967_11d3_9284_0080adb811c5

#if _MSC_VER > 1000 
#pragma once
#endif // _MSC_VER > 1000

#pragma warning (disable : 4244)

class HTMLViewWin :
	public CWindowImpl <HTMLViewWin, CAxWindow>
{
public:
	enum exStyleEnum {exFlat, ex3D, exBorder};

private:
	CComPtr<IHTMLDocument2> m_pDoc;
	CComPtr<IHTMLElement>   m_pBody;
	CComPtr<IHTMLBodyElement> m_pBodyElement;
	const CComBSTR afterBegin;
	const CComBSTR beforeEnd;
	CComBSTR m_url;
	CComBSTR m_file;
	RECT m_rect;

public:

	HTMLViewWin() : afterBegin(L"AfterBegin"), beforeEnd(L"BeforeEnd"), m_url(L""), m_file(L"")
	{
		memset(&m_rect, 0, sizeof RECT);
	}

	~HTMLViewWin ()
	{
		if (m_hWnd)
			DestroyWindow();
	}

DECLARE_WND_SUPERCLASS (0, _T("STATIC"))

BEGIN_MSG_MAP(HTMLView)
	MESSAGE_HANDLER(WM_CREATE, OnCreate)
	MESSAGE_HANDLER(WM_DESTROY, OnDestroy)
END_MSG_MAP()

public:

	STDMETHOD(Create1)(HWND hWndParent, exStyleEnum eVal, LONG Left, LONG Top, LONG Width, LONG Height)
	{
		RECT rect = {Left, Top, Left + Width, Top + Height};
		m_rect = rect;

		HWND res = CWindowImpl <HTMLViewWin, CAxWindow>::Create ((HWND)hWndParent, rect, 0, WS_CHILD | WS_VISIBLE | (eVal & exBorder ? WS_BORDER : 0),  (eVal & ex3D ? WS_EX_CLIENTEDGE : 0));
		if (!res) 
			return E_FAIL;	
		return S_OK;
	}
	STDMETHOD(Resize)(short Left, short Top, short Width, short Height)
	{
		RECT rect = {Left, Top, Width, Height};
		m_rect = rect;

		if (HelperSetPos()) 
			return S_OK;
		return E_FAIL;
	}
	STDMETHOD(Clear)()
	{
		HRESULT hr = E_FAIL;
		BSTR txt = SysAllocString(L"");	
		__try {hr = m_pBody->put_innerHTML(txt);}	
		__finally {SysFreeString(txt);}			
		return hr;
	}
	STDMETHOD(insertToFront)(BSTR html)
	{	
		HRESULT hr = E_FAIL;	
		__try {hr = m_pBody->insertAdjacentHTML(afterBegin, html);}	
		__except(1) {}		
		return hr;
	}
	STDMETHOD(insertToBack)(BSTR html)
	{
		HRESULT hr = E_FAIL;	
		__try {hr = m_pBody->insertAdjacentHTML(beforeEnd, html);}	
		__except(1) {}
		return hr;
	}
	STDMETHOD(get_HTML)(BSTR *pVal)
	{
		HRESULT hr = E_FAIL;	
		__try {hr = m_pBody->get_innerHTML (pVal);}
		__except(1) {}
		return hr;
	}
	STDMETHOD(put_HTML)(BSTR newVal)
	{
		HRESULT hr = E_FAIL;	
		__try {hr = m_pBody->put_innerHTML (newVal);}
		__except(1) {}
		return hr;
	}
	STDMETHOD(get_Text)(BSTR *pVal)
	{
		HRESULT hr = E_FAIL;	
		__try {hr = m_pBody->get_innerText (pVal);}
		__except(1) {}
		return hr;
	}
	STDMETHOD(put_Text)(BSTR newVal)
	{
		HRESULT hr = E_FAIL;	
		__try {hr = m_pBody->put_innerText (newVal);}
		__except(1) {}
		return hr;
	}
	STDMETHOD(get_Top)(short *pVal)
	{	
		if (!pVal) return E_POINTER;
		(*pVal) = m_rect.top; 
		return S_OK;
	}
	STDMETHOD(put_Top)(short newVal)
	{
		short old_value = m_rect.top;
		m_rect.top = newVal;
		if (HelperSetPos())
			return S_OK;

		m_rect.top = old_value;
		return E_FAIL;
	}
	STDMETHOD(get_Left)(short *pVal)
	{
		if (!pVal) return E_POINTER;
		(*pVal) = m_rect.left; 
		return S_OK;
	}
	STDMETHOD(put_Left)(short newVal)
	{
		short old_value = m_rect.left;
		m_rect.left = newVal;
		if (HelperSetPos())
			return S_OK;

		m_rect.left = old_value;
		return E_FAIL;
	}
	STDMETHOD(get_Width)(short *pVal)
	{
		if (!pVal) return E_POINTER;
		(*pVal) = m_rect.right; 
		return S_OK;	
	}
	STDMETHOD(put_Width)(short newVal)
	{
		short old_value = m_rect.right;
		m_rect.right = newVal;
		if (HelperSetPos())
			return S_OK;

		m_rect.right = old_value;
		return E_FAIL;
	}
	STDMETHOD(get_Height)(short *pVal)
	{
		if (!pVal) return E_POINTER;
		(*pVal) = m_rect.bottom; 
		return S_OK;	
	}
	STDMETHOD(put_Height)(short newVal)
	{
		short old_value = m_rect.bottom;
		m_rect.bottom = newVal;
		if (HelperSetPos())
			return S_OK;

		m_rect.bottom = old_value;
		return E_FAIL;
	}
	STDMETHOD(get_fgColor)(VARIANT *pVal)
	{
		HRESULT hr = E_FAIL;	
		__try {hr = m_pDoc->get_fgColor (pVal);}
		__except(1) {}	
		return hr;
	}
	STDMETHOD(put_fgColor)(VARIANT newVal)
	{
		HRESULT hr = E_FAIL;	
		__try {hr = m_pDoc->put_fgColor (newVal);}
		__except(1) {}	
		return hr;
	}
	STDMETHOD(get_bgColor)(VARIANT *pVal)
	{
		HRESULT hr = E_FAIL;	
		__try {hr = m_pDoc->get_bgColor (pVal);}
		__except(1) {}	
		return hr;
	}
	STDMETHOD(put_bgColor)(VARIANT newVal)
	{
		HRESULT hr = E_FAIL;	
		__try {hr = m_pDoc->put_bgColor (newVal);}
		__except(1) {}
		return hr;
	}
	STDMETHOD(get_Background)(BSTR *pVal)
	{
		HRESULT hr = E_FAIL;			
		__try {hr = m_pBodyElement->get_background (pVal);}
		__except(1) {}	
		return hr;
	}
	STDMETHOD(put_Background)(BSTR newVal)
	{
		HRESULT hr = E_FAIL;			
		__try {hr = m_pBodyElement->put_background (newVal);}
		__except(1) {}
		return hr;
	}
	STDMETHOD(get_URL)(BSTR *pVal)
	{
		if (!pVal) return E_POINTER;
		*pVal = m_url.Copy();
		return S_OK;
	}
	STDMETHOD(put_URL)(BSTR newVal)
	{
		CComPtr<IMoniker> pMnk;
		CComPtr<IPersistMoniker> pPM;

		HRESULT hr = CreateURLMoniker(0, newVal, &pMnk);
		if (FAILED(hr)) return hr;	
		hr = m_pDoc.QueryInterface (&pPM);
		if (FAILED(hr)) return hr;
		hr = pPM->Load (true, pMnk, 0, 0);
		if (FAILED(hr)) return hr;		

		m_url = newVal;
		m_file = L"";
		return hr;
	}
	STDMETHOD (get_File)(BSTR *pVal)
	{
		if (!pVal) return E_POINTER;
		*pVal = m_file.Copy();
		return S_OK;	
	}
	STDMETHOD(put_File)(BSTR newVal)
	{
		CComPtr<IPersistFile> m_pF;

		HRESULT hr = m_pDoc.QueryInterface (&m_pF);
		if (FAILED(hr)) return hr;	
		hr = m_pF->Load (newVal, 0);
		if (FAILED(hr)) return hr;		

		m_file = newVal;
		m_url = L"";
		return hr;
	}	
	LRESULT OnCreate(UINT, WPARAM, LPARAM, BOOL&)
	{			
		CComPtr<IUnknown> pUnk;		
		return HelperCreateDoc(pUnk);		
	}
	LRESULT OnDestroy(UINT, WPARAM, LPARAM, BOOL&)
	{
		__try {m_pBody.Release ();} __except(1) {} 
		__try {m_pDoc.Release ();} __except(1) {}
		return 0;
	}

private:

	//need for used SEH (thru warning 4509)
	LRESULT HelperCreateDoc (CComPtr<IUnknown>& pUnk)
	{
		HRESULT hr = E_FAIL;

		__try 
		{ 
			CreateControlEx(L"{25336920-03F9-11cf-8FD0-00AA00686F13}", 0, 0, &pUnk);
			pUnk.QueryInterface(&m_pDoc);								
			hr = m_pDoc->get_body(&m_pBody);
			m_pBody.QueryInterface(&m_pBodyElement);											
		}
		__except (1) {}

		if (FAILED(hr) || !m_pBody) 
			return -1;
		return 0;
	}

	bool HelperSetPos ()
	{
		return (MoveWindow (m_rect.left, m_rect.top, m_rect.right, m_rect.bottom) != 0);
	}
};

#pragma warning (default : 4244)

#endif //_HtmlViewWin_7715d762_5967_11d3_9284_0080adb811c5