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Updated testEmbed for MRE application support. Changed files testembed.cpp, winfilelocprovider.cpp & .h

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git-svn-id: svn://10.0.0.236/trunk@123928 18797224-902f-48f8-a5cc-f745e15eee43
This commit is contained in:
ashishbhatt%netscape.com
2002-06-24 19:32:18 +00:00
parent e5f2c53ab4
commit 3fb8d58b92
3 changed files with 121 additions and 6 deletions
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103
mozilla/embedding/qa/testembed/winEmbedFileLocProvider.cpp
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@@ -47,7 +47,7 @@
#define CHROME_DIR_NAME NS_LITERAL_CSTRING("chrome")
#define PLUGINS_DIR_NAME NS_LITERAL_CSTRING("plugins")
#define SEARCH_DIR_NAME NS_LITERAL_CSTRING("searchplugins")
#define COMPONENTS_DIR_NAME NS_LITERAL_CSTRING("components")
//*****************************************************************************
// winEmbedFileLocProvider::Constructor/Destructor
@@ -148,14 +148,113 @@ winEmbedFileLocProvider::GetFile(const char *prop, PRBool *persistant, nsIFile *
if (NS_SUCCEEDED(rv))
rv = localFile->AppendRelativeNativePath(SEARCH_DIR_NAME);
}
//---------------------------------------------------------------
// Note that by returning a valid localFile's for NS_MRE_DIR and
// NS_NRE_COMPONENT_DIR your app is indicating to XPCOM that
// it found an MRE version with which it's compatible with and
// it intends to be "run against" that MRE
//
// Please see http://www.mozilla.org/projects/embedding/MRE.html
// for more info. on MRE
//---------------------------------------------------------------
else if (nsCRT::strcmp(prop, NS_MRE_DIR) == 0)
{
rv = GetMreDirectory(getter_AddRefs(localFile));
}
else if (nsCRT::strcmp(prop, NS_MRE_COMPONENT_DIR) == 0)
{
rv = GetMreDirectory(getter_AddRefs(localFile));
if (NS_SUCCEEDED(rv))
rv = localFile->AppendRelativeNativePath(COMPONENTS_DIR_NAME);
}
if (localFile && NS_SUCCEEDED(rv))
return localFile->QueryInterface(NS_GET_IID(nsIFile), (void**)_retval);
return rv;
}
// Get the location of the MRE version we're compatible with from
// the registry
//
static char * GetMreLocationFromRegistry()
{
char szKey[256];
HKEY hRegKey = NULL;
DWORD dwLength = _MAX_PATH * sizeof(char);
long rc;
char keyValue[_MAX_PATH + 1];
char *pMreLocation = NULL;
// A couple of key points here:
// 1. Note the usage of the "Software\\Mozilla\\MRE" subkey - this allows
// us to have multiple versions of MREs on the same machine by having
// subkeys such as 1.0, 1.1, 2.0 etc. under it.
// 2. In this sample below we're looking for the location of MRE version 1.0
// i.e. we're compatible with MRE 1.0 and we're trying to find it's install
// location.
//
// Please see http://www.mozilla.org/projects/embedding/MRE.html for
// more info.
//
strcpy(szKey, "Software\\Mozilla\\MRE\\1.0");
if (::RegOpenKeyEx(HKEY_LOCAL_MACHINE, szKey, 0, KEY_QUERY_VALUE, &hRegKey) == ERROR_SUCCESS)
{
if ((rc = ::RegQueryValueEx(hRegKey, "MreHome", NULL, NULL, (BYTE *)keyValue, &dwLength))==ERROR_SUCCESS)
{
pMreLocation = ::strdup(keyValue);
::RegCloseKey(hRegKey);
}
}
return pMreLocation;
}
// Create and return the location of the MRE the application is
// currently using, if any, via the |aLocalFile| param
//
// If an embedding application is written to use an MRE it determines
// the compatible MRE's location by looking in the Windows registry
// In this case GetMreDirectory() creates a new localFile based on the
// MRE path it just read from the registry
//
// If the embedding appliction is not using an MRE and is running in
// a "regular" embedding scenario GetMreDirectory() simply returns a
// failure code indicating to the caller to fallback to a non-MRE
// based operation - which is the default mode of operation.
//
// Please see http://www.mozilla.org/projects/embedding/MRE.html for
// more information on the Mozilla Runtime Environment(MRE) and for
// the actual registry key whichs contains the MRE path, if any.
NS_METHOD winEmbedFileLocProvider::GetMreDirectory(nsILocalFile **aLocalFile)
{
NS_ENSURE_ARG_POINTER(aLocalFile);
nsresult rv = NS_ERROR_FAILURE;
// Get the path of the MRE which is compatible with our embedding application
// from the registry
//
char *pMreDir = GetMreLocationFromRegistry();
if(pMreDir)
{
nsCOMPtr<nsILocalFile> tempLocal;
rv = NS_NewNativeLocalFile(nsDependentCString(pMreDir), TRUE, getter_AddRefs(tempLocal));
if (tempLocal)
{
*aLocalFile = tempLocal;
NS_ADDREF(*aLocalFile);
rv = NS_OK;
}
::free(pMreDir);
}
return rv;
}
NS_METHOD winEmbedFileLocProvider::CloneMozBinDirectory(nsILocalFile **aLocalFile)
{
NS_ENSURE_ARG_POINTER(aLocalFile);