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Support pasting of CF_HTML flavor. r=brade/sr=alecf. bug#69566

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This commit is contained in:
pinkerton%netscape.com 2002-05-01 21:58:38 +00:00
parent c2c1a1574f
commit 6235895bd0
3 changed files with 37 additions and 9 deletions
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33
widget/src/windows/nsClipboard.cpp
View File

@ -64,6 +64,10 @@
#include "nsIImage.h"
// oddly, this isn't in the MSVC headers anywhere.
UINT nsClipboard::CF_HTML = ::RegisterClipboardFormat("HTML Format");
//-------------------------------------------------------------------------
//
// nsClipboard constructor
@ -101,6 +105,8 @@ UINT nsClipboard::GetFormat(const char* aMimeStr)
format = CF_HDROP;
else if (mimeStr.Equals(kURLMime))
format = CF_UNICODETEXT;
else if (mimeStr.Equals(kHTMLMime))
format = nsClipboard::CF_HTML;
else
format = ::RegisterClipboardFormat(aMimeStr);
@ -181,7 +187,7 @@ nsresult nsClipboard::SetupNativeDataObject(nsITransferable * aTransferable, IDa
// if we find text/html, also advertise win32's html flavor (which we will convert
// on our own in nsDataObj::GetText().
FORMATETC htmlFE;
SET_FORMATETC(htmlFE, ::RegisterClipboardFormat("HTML Format"), 0, DVASPECT_CONTENT, -1, TYMED_HGLOBAL);
SET_FORMATETC(htmlFE, CF_HTML, 0, DVASPECT_CONTENT, -1, TYMED_HGLOBAL);
dObj->AddDataFlavor(kHTMLMime, &htmlFE);
}
else if ( strcmp(flavorStr, kURLMime) == 0 ) {
@ -571,6 +577,31 @@ nsresult nsClipboard::GetDataFromDataObject(IDataObject * aDataObject,
if ( NS_SUCCEEDED(NS_NewNativeLocalFile(filepath, PR_FALSE, getter_AddRefs(file))) )
genericDataWrapper = do_QueryInterface(file);
}
else if ( strcmp(flavorStr, kHTMLMime) == 0 ) {
// CF_HTML is different from what we want as html. Munge the data appropriately.
// convert the win32 line endings to DOM line endings. We do this first to
// avoid another copy since we can't replace the converter's buffer in situ.
// CF_HTML is UTF8, so tell the converter we have text/plain so that it does
// single byte conversion.
PRInt32 signedLen = NS_STATIC_CAST(PRInt32, dataLen);
nsLinebreakHelpers::ConvertPlatformToDOMLinebreaks ( kTextMime, &data, &signedLen );
// Convert from CF_HTML to gecko's html data flavor. Details of the CF_HTML format
// can be found at:
// http://msdn.microsoft.com/workshop/networking/clipboard/htmlclipboard.asp
//
// Essentially, we strip off all the header info and return everything else. I think
// it's safe to assume that the fragment will always contain <!DOCTYPE> at the beginning
// of the actual data, so look for that.
char* headerStart = strchr((char*)data, '<');
if ( headerStart ) {
// gecko expects HTML in unicode, but CF_HTML is in UTF8. Convert it
NS_ConvertUTF8toUCS2 converter ( headerStart );
dataLen = converter.Length() * sizeof(PRUnichar);
nsPrimitiveHelpers::CreatePrimitiveForData ( flavorStr, (void*)converter.get(), dataLen, getter_AddRefs(genericDataWrapper) );
}
}
else {
// we probably have some form of text. The DOM only wants LF, so convert from Win32 line
// endings to DOM line endings.

4
widget/src/windows/nsClipboard.h
View File

@ -75,10 +75,12 @@ public:
static nsresult GetGlobalData(HGLOBAL aHGBL, void ** aData, PRUint32 * aLen);
static UINT GetFormat(const char* aMimeStr);
static UINT CF_HTML;
protected:
NS_IMETHOD SetNativeClipboardData ( PRInt32 aWhichClipboard );
NS_IMETHOD GetNativeClipboardData ( nsITransferable * aTransferable, PRInt32 aWhichClipboard );
static PRBool IsInternetShortcut ( const char* inFileName ) ;
static PRBool FindURLFromLocalFile ( IDataObject* inDataObject, UINT inIndex, void** outData, PRUint32* outDataLen ) ;
static PRBool FindUnicodeFromPlainText ( IDataObject* inDataObject, UINT inIndex, void** outData, PRUint32* outDataLen ) ;

9
widget/src/windows/nsDataObj.cpp
View File

@ -38,6 +38,7 @@
* ***** END LICENSE BLOCK ***** */
#include "nsDataObj.h"
#include "nsClipboard.h"
#include "nsString.h"
#include "nsReadableUtils.h"
#include "nsVoidArray.h"
@ -640,9 +641,6 @@ HRESULT nsDataObj::GetText(const nsACString & aDataFlavor, FORMATETC& aFE, STGME
aSTG.tymed = TYMED_HGLOBAL;
aSTG.pUnkForRelease = NULL;
// oddly, this isn't in the MSVC headers anywhere.
static int CF_HTML = ::RegisterClipboardFormat("HTML Format");
// We play games under the hood and advertise flavors that we know we
// can support, only they require a bit of conversion or munging of the data.
// Do that here.
@ -672,7 +670,7 @@ HRESULT nsDataObj::GetText(const nsACString & aDataFlavor, FORMATETC& aFE, STGME
return ResultFromScode(S_OK);
}
}
else if ( aFE.cfFormat == CF_HTML ) {
else if ( aFE.cfFormat == nsClipboard::CF_HTML ) {
// Someone is asking for win32's HTML flavor. Convert our html fragment
// from unicode to UTF-8 then put it into a format specified by msft.
NS_ConvertUCS2toUTF8 converter ( NS_REINTERPRET_CAST(PRUnichar*, data) );
@ -902,9 +900,6 @@ nsDataObj :: BuildPlatformHTML ( const char* inOurHTML, char** outPlatformHTML )
if( !buf )
return NS_ERROR_FAILURE;
// Get clipboard id for HTML format...
static int cfid = RegisterClipboardFormat("HTML Format");;
// Create a template string for the HTML header...
strcpy(buf,
"Version:0.9\r\n"