PassRefPtr<DocumentFragment> fragmentFromHTML(Document* doc, IDataObject* data) { if (!doc || !data) return 0; STGMEDIUM store; String html; String srcURL; if (SUCCEEDED(data->GetData(htmlFormat(), &store))) { //MS HTML Format parsing char* data = (char*)GlobalLock(store.hGlobal); SIZE_T dataSize = ::GlobalSize(store.hGlobal); String cf_html(UTF8Encoding().decode(data, dataSize)); GlobalUnlock(store.hGlobal); ReleaseStgMedium(&store); if (PassRefPtr<DocumentFragment> fragment = fragmentFromCF_HTML(doc, cf_html)) return fragment; } if (SUCCEEDED(data->GetData(texthtmlFormat(), &store))) { //raw html UChar* data = (UChar*)GlobalLock(store.hGlobal); html = String(data); GlobalUnlock(store.hGlobal); ReleaseStgMedium(&store); return createFragmentFromMarkup(doc, html, srcURL); } return 0; }
PassRefPtr<DocumentFragment> Pasteboard::documentFragment(Frame* frame, PassRefPtr<Range> context, bool allowPlainText, bool& chosePlainText) { chosePlainText = false; if (::IsClipboardFormatAvailable(HTMLClipboardFormat) && ::OpenClipboard(m_owner)) { // get data off of clipboard HANDLE cbData = ::GetClipboardData(HTMLClipboardFormat); if (cbData) { SIZE_T dataSize = ::GlobalSize(cbData); String cf_html(UTF8Encoding().decode((char*)GlobalLock(cbData), dataSize)); GlobalUnlock(cbData); CloseClipboard(); PassRefPtr<DocumentFragment> fragment = fragmentFromCF_HTML(frame->document(), cf_html); if (fragment) return fragment; } else CloseClipboard(); } if (allowPlainText && IsClipboardFormatAvailable(CF_UNICODETEXT)) { chosePlainText = true; if (OpenClipboard(m_owner)) { HANDLE cbData = GetClipboardData(CF_UNICODETEXT); if (cbData) { UChar* buffer = (UChar*)GlobalLock(cbData); String str(buffer); GlobalUnlock(cbData); CloseClipboard(); RefPtr<DocumentFragment> fragment = createFragmentFromText(context.get(), str); if (fragment) return fragment.release(); } else CloseClipboard(); } } if (allowPlainText && ::IsClipboardFormatAvailable(CF_TEXT)) { chosePlainText = true; if (::OpenClipboard(m_owner)) { HANDLE cbData = ::GetClipboardData(CF_TEXT); if (cbData) { char* buffer = (char*)GlobalLock(cbData); String str(buffer); GlobalUnlock(cbData); CloseClipboard(); RefPtr<DocumentFragment> fragment = createFragmentFromText(context.get(), str); if (fragment) return fragment.release(); } else CloseClipboard(); } } return 0; }
// Documentation for the CF_HTML format is available at http://msdn.microsoft.com/workshop/networking/clipboard/htmlclipboard.asp DeprecatedCString markupToCF_HTML(const String& markup, const String& srcURL) { if (!markup.length()) return DeprecatedCString(); DeprecatedCString cf_html ("Version:0.9"); DeprecatedCString startHTML ("\nStartHTML:"); DeprecatedCString endHTML ("\nEndHTML:"); DeprecatedCString startFragment ("\nStartFragment:"); DeprecatedCString endFragment ("\nEndFragment:"); DeprecatedCString sourceURL ("\nSourceURL:"); bool shouldFillSourceURL = !srcURL.isEmpty() && (srcURL != "about:blank"); if (shouldFillSourceURL) sourceURL.append(srcURL.utf8().data()); DeprecatedCString startMarkup ("\n<HTML>\n<BODY>\n<!--StartFragment-->\n"); DeprecatedCString endMarkup ("\n<!--EndFragment-->\n</BODY>\n</HTML>"); // calculate offsets const unsigned UINT_MAXdigits = 10; // number of digits in UINT_MAX in base 10 unsigned startHTMLOffset = cf_html.length() + startHTML.length() + endHTML.length() + startFragment.length() + endFragment.length() + (shouldFillSourceURL ? sourceURL.length() : 0) + (4*UINT_MAXdigits); unsigned startFragmentOffset = startHTMLOffset + startMarkup.length(); CString markupUTF8 = markup.utf8(); unsigned endFragmentOffset = startFragmentOffset + markupUTF8.length(); unsigned endHTMLOffset = endFragmentOffset + endMarkup.length(); // fill in needed data startHTML.append(String::format("%010u", startHTMLOffset).deprecatedString().utf8()); endHTML.append(String::format("%010u", endHTMLOffset).deprecatedString().utf8()); startFragment.append(String::format("%010u", startFragmentOffset).deprecatedString().utf8()); endFragment.append(String::format("%010u", endFragmentOffset).deprecatedString().utf8()); startMarkup.append(markupUTF8.data()); // create full cf_html string from the fragments cf_html.append(startHTML); cf_html.append(endHTML); cf_html.append(startFragment); cf_html.append(endFragment); if (shouldFillSourceURL) cf_html.append(sourceURL); cf_html.append(startMarkup); cf_html.append(endMarkup); return cf_html; }