//
// FindUnicodeFromPlainText
//
// we are looking for text/unicode and we failed to find it on the clipboard first,
// try again with text/plain. If that is present, convert it to unicode.
//
bool
nsClipboard :: FindUnicodeFromPlainText ( IDataObject* inDataObject, UINT inIndex, void** outData, PRUint32* outDataLen )
{
bool dataFound = false;
// we are looking for text/unicode and we failed to find it on the clipboard first,
// try again with text/plain. If that is present, convert it to unicode.
nsresult loadResult = GetNativeDataOffClipboard(inDataObject, inIndex, GetFormat(kTextMime), nullptr, outData, outDataLen);
if ( NS_SUCCEEDED(loadResult) && *outData ) {
const char* castedText = reinterpret_cast<char*>(*outData);
PRUnichar* convertedText = nullptr;
PRInt32 convertedTextLen = 0;
nsPrimitiveHelpers::ConvertPlatformPlainTextToUnicode ( castedText, *outDataLen,
&convertedText, &convertedTextLen );
if ( convertedText ) {
// out with the old, in with the new
nsMemory::Free(*outData);
*outData = convertedText;
*outDataLen = convertedTextLen * sizeof(PRUnichar);
dataFound = true;
}
} // if plain text data on clipboard
return dataFound;
} // FindUnicodeFromPlainText
//
// FindURLFromNativeURL
//
// we are looking for a URL and couldn't find it using our internal
// URL flavor, so look for it using the native URL flavor,
// CF_INETURLSTRW (We don't handle CF_INETURLSTRA currently)
//
bool
nsClipboard :: FindURLFromNativeURL ( IDataObject* inDataObject, UINT inIndex, void** outData, PRUint32* outDataLen )
{
bool dataFound = false;
void* tempOutData = nullptr;
PRUint32 tempDataLen = 0;
nsresult loadResult = GetNativeDataOffClipboard(inDataObject, inIndex, ::RegisterClipboardFormat(CFSTR_INETURLW), nullptr, &tempOutData, &tempDataLen);
if ( NS_SUCCEEDED(loadResult) && tempOutData ) {
nsDependentString urlString(static_cast<PRUnichar*>(tempOutData));
// the internal mozilla URL format, text/x-moz-url, contains
// URL\ntitle. Since we don't actually have a title here,
// just repeat the URL to fake it.
*outData = ToNewUnicode(urlString + NS_LITERAL_STRING("\n") + urlString);
*outDataLen = NS_strlen(static_cast<PRUnichar*>(*outData)) * sizeof(PRUnichar);
nsMemory::Free(tempOutData);
dataFound = true;
}
else {
loadResult = GetNativeDataOffClipboard(inDataObject, inIndex, ::RegisterClipboardFormat(CFSTR_INETURLA), nullptr, &tempOutData, &tempDataLen);
if ( NS_SUCCEEDED(loadResult) && tempOutData ) {
// CFSTR_INETURLA is (currently) equal to CFSTR_SHELLURL which is equal to CF_TEXT
// which is by definition ANSI encoded.
nsCString urlUnescapedA;
bool unescaped = NS_UnescapeURL(static_cast<char*>(tempOutData), tempDataLen, esc_OnlyNonASCII | esc_SkipControl, urlUnescapedA);
nsString urlString;
if (unescaped)
NS_CopyNativeToUnicode(urlUnescapedA, urlString);
else
NS_CopyNativeToUnicode(nsDependentCString(static_cast<char*>(tempOutData), tempDataLen), urlString);
// the internal mozilla URL format, text/x-moz-url, contains
// URL\ntitle. Since we don't actually have a title here,
// just repeat the URL to fake it.
*outData = ToNewUnicode(urlString + NS_LITERAL_STRING("\n") + urlString);
*outDataLen = NS_strlen(static_cast<PRUnichar*>(*outData)) * sizeof(PRUnichar);
nsMemory::Free(tempOutData);
dataFound = true;
}
}
return dataFound;
} // FindURLFromNativeURL
//
// FindURLFromLocalFile
//
// we are looking for a URL and couldn't find it, try again with looking for
// a local file. If we have one, it may either be a normal file or an internet shortcut.
// In both cases, however, we can get a URL (it will be a file:// url in the
// local file case).
//
bool
nsClipboard :: FindURLFromLocalFile ( IDataObject* inDataObject, UINT inIndex, void** outData, PRUint32* outDataLen )
{
bool dataFound = false;
nsresult loadResult = GetNativeDataOffClipboard(inDataObject, inIndex, GetFormat(kFileMime), nullptr, outData, outDataLen);
if ( NS_SUCCEEDED(loadResult) && *outData ) {
// we have a file path in |data|. Is it an internet shortcut or a normal file?
const nsDependentString filepath(static_cast<PRUnichar*>(*outData));
nsCOMPtr<nsIFile> file;
nsresult rv = NS_NewLocalFile(filepath, true, getter_AddRefs(file));
if (NS_FAILED(rv)) {
nsMemory::Free(*outData);
return dataFound;
}
if ( IsInternetShortcut(filepath) ) {
nsMemory::Free(*outData);
nsCAutoString url;
ResolveShortcut( file, url );
if ( !url.IsEmpty() ) {
// convert it to unicode and pass it out
nsDependentString urlString(UTF8ToNewUnicode(url));
// the internal mozilla URL format, text/x-moz-url, contains
// URL\ntitle. We can guess the title from the file's name.
nsAutoString title;
file->GetLeafName(title);
// We rely on IsInternetShortcut check that file has a .url extension.
title.SetLength(title.Length() - 4);
if (title.IsEmpty())
title = urlString;
*outData = ToNewUnicode(urlString + NS_LITERAL_STRING("\n") + title);
*outDataLen = NS_strlen(static_cast<PRUnichar*>(*outData)) * sizeof(PRUnichar);
dataFound = true;
}
}
else {
// we have a normal file, use some Necko objects to get our file path
nsCAutoString urlSpec;
NS_GetURLSpecFromFile(file, urlSpec);
// convert it to unicode and pass it out
nsMemory::Free(*outData);
*outData = UTF8ToNewUnicode(urlSpec);
*outDataLen = NS_strlen(static_cast<PRUnichar*>(*outData)) * sizeof(PRUnichar);
dataFound = true;
} // else regular file
}
return dataFound;
} // FindURLFromLocalFile
//
// FindURLFromLocalFile
//
// we are looking for a URL and couldn't find it, try again with looking for
// a local file. If we have one, it may either be a normal file or an internet shortcut.
// In both cases, however, we can get a URL (it will be a file:// url in the
// local file case).
//
PRBool
nsClipboard :: FindURLFromLocalFile ( IDataObject* inDataObject, UINT inIndex, void** outData, PRUint32* outDataLen )
{
PRBool dataFound = PR_FALSE;
nsresult loadResult = GetNativeDataOffClipboard(inDataObject, inIndex, GetFormat(kFileMime), outData, outDataLen);
if ( NS_SUCCEEDED(loadResult) && *outData ) {
// we have a file path in |data|. Is it an internet shortcut or a normal file?
const nsDependentString filepath(static_cast<PRUnichar*>(*outData));
nsCOMPtr<nsILocalFile> file;
nsresult rv = NS_NewLocalFile(filepath, PR_TRUE, getter_AddRefs(file));
if (NS_FAILED(rv))
return dataFound;
if ( IsInternetShortcut(filepath) ) {
nsCAutoString url;
ResolveShortcut( file, url );
if ( !url.IsEmpty() ) {
// convert it to unicode and pass it out
nsMemory::Free(*outData);
*outData = UTF8ToNewUnicode(url);
*outDataLen = nsCRT::strlen(static_cast<PRUnichar*>(*outData)) * sizeof(PRUnichar);
dataFound = PR_TRUE;
}
}
else {
// we have a normal file, use some Necko objects to get our file path
nsCAutoString urlSpec;
NS_GetURLSpecFromFile(file, urlSpec);
// convert it to unicode and pass it out
nsMemory::Free(*outData);
*outData = UTF8ToNewUnicode(urlSpec);
*outDataLen = nsCRT::strlen(static_cast<PRUnichar*>(*outData)) * sizeof(PRUnichar);
dataFound = PR_TRUE;
} // else regular file
}
return dataFound;
} // FindURLFromLocalFile
//
// FindURLFromNativeURL
//
// we are looking for a URL and couldn't find it using our internal
// URL flavor, so look for it using the native URL flavor,
// CF_INETURLSTRW (We don't handle CF_INETURLSTRA currently)
//
PRBool
nsClipboard :: FindURLFromNativeURL ( IDataObject* inDataObject, UINT inIndex, void** outData, PRUint32* outDataLen )
{
PRBool dataFound = PR_FALSE;
void* tempOutData = nsnull;
PRUint32 tempDataLen = 0;
nsresult loadResult = GetNativeDataOffClipboard(inDataObject, inIndex, ::RegisterClipboardFormat(CFSTR_INETURLW), &tempOutData, &tempDataLen);
if ( NS_SUCCEEDED(loadResult) && tempOutData ) {
nsDependentString urlString(static_cast<PRUnichar*>(tempOutData));
// the internal mozilla URL format, text/x-moz-url, contains
// URL\ntitle. Since we don't actually have a title here,
// just repeat the URL to fake it.
*outData = ToNewUnicode(urlString + NS_LITERAL_STRING("\n") + urlString);
*outDataLen = nsCRT::strlen(static_cast<PRUnichar*>(*outData)) * sizeof(PRUnichar);
nsMemory::Free(tempOutData);
dataFound = PR_TRUE;
}
return dataFound;
} // FindURLFromNativeURL
//-------------------------------------------------------------------------
nsresult nsClipboard::GetDataFromDataObject(IDataObject * aDataObject,
UINT anIndex,
nsIWidget * aWindow,
nsITransferable * aTransferable)
{
// make sure we have a good transferable
if ( !aTransferable )
return NS_ERROR_INVALID_ARG;
nsresult res = NS_ERROR_FAILURE;
// get flavor list that includes all flavors that can be written (including ones
// obtained through conversion)
nsCOMPtr<nsISupportsArray> flavorList;
res = aTransferable->FlavorsTransferableCanImport ( getter_AddRefs(flavorList) );
if ( NS_FAILED(res) )
return NS_ERROR_FAILURE;
// Walk through flavors and see which flavor is on the clipboard them on the native clipboard,
PRUint32 i;
PRUint32 cnt;
flavorList->Count(&cnt);
for (i=0;i<cnt;i++) {
nsCOMPtr<nsISupports> genericFlavor;
flavorList->GetElementAt ( i, getter_AddRefs(genericFlavor) );
nsCOMPtr<nsISupportsCString> currentFlavor ( do_QueryInterface(genericFlavor) );
if ( currentFlavor ) {
nsXPIDLCString flavorStr;
currentFlavor->ToString(getter_Copies(flavorStr));
UINT format = GetFormat(flavorStr);
// Try to get the data using the desired flavor. This might fail, but all is
// not lost.
void* data = nullptr;
PRUint32 dataLen = 0;
bool dataFound = false;
if (nullptr != aDataObject) {
if ( NS_SUCCEEDED(GetNativeDataOffClipboard(aDataObject, anIndex, format, flavorStr, &data, &dataLen)) )
dataFound = true;
}
else if (nullptr != aWindow) {
if ( NS_SUCCEEDED(GetNativeDataOffClipboard(aWindow, anIndex, format, &data, &dataLen)) )
dataFound = true;
}
// This is our second chance to try to find some data, having not found it
// when directly asking for the flavor. Let's try digging around in other
// flavors to help satisfy our craving for data.
if ( !dataFound ) {
if ( strcmp(flavorStr, kUnicodeMime) == 0 )
dataFound = FindUnicodeFromPlainText ( aDataObject, anIndex, &data, &dataLen );
else if ( strcmp(flavorStr, kURLMime) == 0 ) {
// drags from other windows apps expose the native
// CFSTR_INETURL{A,W} flavor
dataFound = FindURLFromNativeURL ( aDataObject, anIndex, &data, &dataLen );
if ( !dataFound )
dataFound = FindURLFromLocalFile ( aDataObject, anIndex, &data, &dataLen );
}
} // if we try one last ditch effort to find our data
// Hopefully by this point we've found it and can go about our business
if ( dataFound ) {
nsCOMPtr<nsISupports> genericDataWrapper;
if ( strcmp(flavorStr, kFileMime) == 0 ) {
// we have a file path in |data|. Create an nsLocalFile object.
nsDependentString filepath(reinterpret_cast<PRUnichar*>(data));
nsCOMPtr<nsIFile> file;
if ( NS_SUCCEEDED(NS_NewLocalFile(filepath, false, getter_AddRefs(file))) )
genericDataWrapper = do_QueryInterface(file);
nsMemory::Free(data);
}
else if ( strcmp(flavorStr, kNativeHTMLMime) == 0) {
// the editor folks want CF_HTML exactly as it's on the clipboard, no conversions,
// no fancy stuff. Pull it off the clipboard, stuff it into a wrapper and hand
// it back to them.
if ( FindPlatformHTML(aDataObject, anIndex, &data, &dataLen) )
nsPrimitiveHelpers::CreatePrimitiveForData ( flavorStr, data, dataLen, getter_AddRefs(genericDataWrapper) );
else
{
nsMemory::Free(data);
continue; // something wrong with this flavor, keep looking for other data
}
nsMemory::Free(data);
}
else if ( strcmp(flavorStr, kJPEGImageMime) == 0 ||
strcmp(flavorStr, kJPGImageMime) == 0 ||
strcmp(flavorStr, kPNGImageMime) == 0) {
nsIInputStream * imageStream = reinterpret_cast<nsIInputStream*>(data);
genericDataWrapper = do_QueryInterface(imageStream);
NS_IF_RELEASE(imageStream);
}
else {
// we probably have some form of text. The DOM only wants LF, so convert from Win32 line
// endings to DOM line endings.
PRInt32 signedLen = static_cast<PRInt32>(dataLen);
nsLinebreakHelpers::ConvertPlatformToDOMLinebreaks ( flavorStr, &data, &signedLen );
dataLen = signedLen;
nsPrimitiveHelpers::CreatePrimitiveForData ( flavorStr, data, dataLen, getter_AddRefs(genericDataWrapper) );
nsMemory::Free(data);
}
NS_ASSERTION ( genericDataWrapper, "About to put null data into the transferable" );
aTransferable->SetTransferData(flavorStr, genericDataWrapper, dataLen);
res = NS_OK;
// we found one, get out of the loop
break;
}
}
} // foreach flavor
return res;
}
