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Visual C++

CHtmlView_SearchView.cpp：源码内容
							// CHtmlView_SearchView.cpp : implementation of the CCHtmlView_SearchView class
//
#include "stdafx.h"
#include "CHtmlView_Search.h"
#include "CHtmlView_SearchDoc.h"
#include "CHtmlView_SearchView.h"
#include <Mshtml.h>
#include <atlbase.h>
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CCHtmlView_SearchView
IMPLEMENT_DYNCREATE(CCHtmlView_SearchView, CHtmlView)
BEGIN_MESSAGE_MAP(CCHtmlView_SearchView, CHtmlView)
	//{{AFX_MSG_MAP(CCHtmlView_SearchView)
		// NOTE - the ClassWizard will add and remove mapping macros here.
		//    DO NOT EDIT what you see in these blocks of generated code!
	//}}AFX_MSG_MAP
	// Standard printing commands
	ON_COMMAND(ID_FILE_PRINT, CHtmlView::OnFilePrint)
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CCHtmlView_SearchView construction/destruction
CCHtmlView_SearchView::CCHtmlView_SearchView()
{
	// TODO: add construction code here
}
CCHtmlView_SearchView::~CCHtmlView_SearchView()
{
}
BOOL CCHtmlView_SearchView::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs
	return CHtmlView::PreCreateWindow(cs);
}
/////////////////////////////////////////////////////////////////////////////
// CCHtmlView_SearchView drawing
void CCHtmlView_SearchView::OnDraw(CDC* pDC)
{
	CCHtmlView_SearchDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
}
void CCHtmlView_SearchView::OnInitialUpdate()
{
	CHtmlView::OnInitialUpdate();
	// TODO: This code navigates to a popular spot on the web.
	//  change the code to go where you'd like.
	Navigate2(_T("http://www.codeproject.com"),NULL,NULL);
}
/////////////////////////////////////////////////////////////////////////////
// CCHtmlView_SearchView printing
/////////////////////////////////////////////////////////////////////////////
// CCHtmlView_SearchView diagnostics
#ifdef _DEBUG
void CCHtmlView_SearchView::AssertValid() const
{
	CHtmlView::AssertValid();
}
void CCHtmlView_SearchView::Dump(CDumpContext& dc) const
{
	CHtmlView::Dump(dc);
}
CCHtmlView_SearchDoc* CCHtmlView_SearchView::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CCHtmlView_SearchDoc)));
	return (CCHtmlView_SearchDoc*)m_pDocument;
}
#endif //_DEBUG
/////////////////////////////////////////////////////////////////////////////
// CCHtmlView_SearchView message handlers
void CCHtmlView_SearchView::FindText(CString searchText, long lFlags /* =2 */, BOOL bNNF /* =FALSE  (for internal use)*/)
{
	static CString sLastSearch;
	static BSTR lastBookmark = NULL;
	if(sLastSearch != searchText)
		lastBookmark = NULL;
	sLastSearch = searchText;
	
	IHTMLDocument2 *lpHtmlDocument = NULL;
	LPDISPATCH lpDispatch = NULL;
	lpDispatch = GetHtmlDocument();
	ASSERT(lpDispatch);
	lpDispatch->QueryInterface(IID_IHTMLDocument2, (void**)&lpHtmlDocument);
	ASSERT(lpHtmlDocument);
	lpDispatch->Release();
	IHTMLElement *lpBodyElm;
	IHTMLBodyElement *lpBody;
	IHTMLTxtRange *lpTxtRange;
	lpHtmlDocument->get_body(&lpBodyElm);
	ASSERT(lpBodyElm);
	lpHtmlDocument->Release();
	lpBodyElm->QueryInterface(IID_IHTMLBodyElement,(void**)&lpBody);
	ASSERT(lpBody);
	lpBodyElm->Release();
	lpBody->createTextRange(&lpTxtRange);
	ASSERT(lpTxtRange);
	lpBody->Release();
	CComBSTR search(searchText.GetLength()+1,(LPCTSTR)searchText);
	bool bFound,bTest;
	long t;
	if(lastBookmark!=NULL)
	{
		lpTxtRange->moveToBookmark(lastBookmark,(VARIANT_BOOL*)&bTest);
		if(!bTest)
		{
			lastBookmark=NULL;
			lpTxtRange->moveStart((BSTR)CComBSTR("Textedit"),1,&t);
			lpTxtRange->moveEnd((BSTR)CComBSTR("Textedit"),1,&t);
		} else
		{
			lpTxtRange->moveStart((BSTR)CComBSTR("Character"),1,&t);
			lpTxtRange->moveEnd((BSTR)CComBSTR("Textedit"),1,&t);
		}
	} else
	{
		lpTxtRange->moveStart((BSTR)CComBSTR("Textedit"),0,&t);
		lpTxtRange->moveEnd((BSTR)CComBSTR("Textedit"),1,&t);
	}
	lpTxtRange->findText((BSTR)search,0,lFlags,(VARIANT_BOOL*)&bFound);
	if(!bFound)
	{
		if(lastBookmark==NULL && !bNNF)
		{
			CString message;
			message.Format("Cannot find the string: '%s'",searchText);
			AfxMessageBox(message);
		} else if(lastBookmark!=NULL)
		{
			lastBookmark = NULL;
			FindText(searchText,lFlags,TRUE);
		}
	} else
	{
		if(lpTxtRange->getBookmark(&lastBookmark)!=S_OK)
			lastBookmark=NULL;
		lpTxtRange->select();
		lpTxtRange->scrollIntoView(TRUE);
	}
	lpTxtRange->Release();
}
void CCHtmlView_SearchView::FindText2(CString searchText, long lFlags /* =2 */, CString matchStyle, CString searchID)
{
	ClearSearchResults(searchID);
	IHTMLDocument2 *lpHtmlDocument = NULL;
	LPDISPATCH lpDispatch = NULL;
	lpDispatch = GetHtmlDocument();
	ASSERT(lpDispatch);
	lpDispatch->QueryInterface(IID_IHTMLDocument2, (void**)&lpHtmlDocument);
	ASSERT(lpHtmlDocument);
	lpDispatch->Release();
	IHTMLElement *lpBodyElm;
	IHTMLBodyElement *lpBody;
	IHTMLTxtRange *lpTxtRange;
	lpHtmlDocument->get_body(&lpBodyElm);
	ASSERT(lpBodyElm);
	lpHtmlDocument->Release();
	lpBodyElm->QueryInterface(IID_IHTMLBodyElement,(void**)&lpBody);
	ASSERT(lpBody);
	lpBodyElm->Release();
	lpBody->createTextRange(&lpTxtRange);
	ASSERT(lpTxtRange);
	lpBody->Release();
	CComBSTR html;
	CComBSTR newhtml;
	CComBSTR search(searchText.GetLength()+1,(LPCTSTR)searchText);
	long t;
	bool bFound;
	while(lpTxtRange->findText(search,0,lFlags,(VARIANT_BOOL*)&bFound),bFound)
	{
		newhtml.Empty();
		lpTxtRange->get_htmlText(&html);
		newhtml.Append("<span id='");
		newhtml.Append((LPCTSTR)searchID);
		newhtml.Append("' style='");
		newhtml.Append((LPCTSTR)matchStyle);
		newhtml.Append("'>");
		if(searchText==" ")
			newhtml.Append("&nbsp;"); // doesn't work very well, but prevents (some) shit
		else 
			newhtml.AppendBSTR(html);
		newhtml.Append("</span>");
		lpTxtRange->pasteHTML(newhtml);
				
		lpTxtRange->moveStart((BSTR)CComBSTR("Character"),1,&t);
		lpTxtRange->moveEnd((BSTR)CComBSTR("Textedit"),1,&t);
	}
	lpTxtRange->Release();
}
void CCHtmlView_SearchView::ClearSearchResults(CString searchID)
{
	CComBSTR testid(searchID.GetLength()+1,searchID);
	CComBSTR testtag(5,"SPAN");
	IHTMLDocument2 *lpHtmlDocument = NULL;
	LPDISPATCH lpDispatch = NULL;
	lpDispatch = GetHtmlDocument();
	ASSERT(lpDispatch);
	lpDispatch->QueryInterface(IID_IHTMLDocument2, (void**)&lpHtmlDocument);
	ASSERT(lpHtmlDocument);
	lpDispatch->Release();
	IHTMLElementCollection *lpAllElements;
	lpHtmlDocument->get_all(&lpAllElements);
	ASSERT(lpAllElements);
	lpHtmlDocument->Release();
	IUnknown *lpUnk;
	IEnumVARIANT *lpNewEnum;
	if (SUCCEEDED(lpAllElements->get__newEnum(&lpUnk)) && lpUnk != NULL)
	{
		lpUnk->QueryInterface(IID_IEnumVARIANT,(void**)&lpNewEnum);
		ASSERT(lpNewEnum);
		VARIANT varElement;
		IHTMLElement *lpElement;
		while (lpNewEnum->Next(1, &varElement, NULL) == S_OK)
		{
			_ASSERTE(varElement.vt == VT_DISPATCH);
			varElement.pdispVal->QueryInterface(IID_IHTMLElement,(void**)&lpElement);
			ASSERT(lpElement);
			if (lpElement)
			{
				CComBSTR id;
				CComBSTR tag;
				lpElement->get_id(&id);
				lpElement->get_tagName(&tag);
				if((id==testid)&&(tag==testtag))
				{
					BSTR innerText;
					lpElement->get_innerHTML(&innerText);
					lpElement->put_outerHTML(innerText);
				}
			}
			VariantClear(&varElement);
		}
	}
}

						