328 lines
11 KiB
C++
328 lines
11 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsCopySupport.h"
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#include "nsIDocumentEncoder.h"
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#include "nsISupports.h"
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#include "nsIContent.h"
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#include "nsIComponentManager.h"
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#include "nsIServiceManager.h"
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#include "nsIClipboard.h"
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#include "nsISelection.h"
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#include "nsWidgetsCID.h"
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#include "nsIEventStateManager.h"
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#include "nsIPresContext.h"
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#include "nsIDOMNSHTMLInputElement.h"
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#include "nsIDOMNSHTMLTextAreaElement.h"
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#include "nsISupportsPrimitives.h"
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#include "nsIDOMRange.h"
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// for IBMBIDI
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#include "nsIDocument.h"
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#include "nsIPresShell.h"
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#include "nsIDOMNode.h"
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#include "nsIDOMElement.h"
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#include "nsIHTMLDocument.h"
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#include "nsHTMLAtoms.h"
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#ifdef IBMBIDI
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#include "nsIUBidiUtils.h"
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static NS_DEFINE_CID(kUBidiUtilCID, NS_UNICHARBIDIUTIL_CID);
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#endif
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static NS_DEFINE_CID(kCClipboardCID, NS_CLIPBOARD_CID);
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static NS_DEFINE_CID(kCTransferableCID, NS_TRANSFERABLE_CID);
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static NS_DEFINE_CID(kHTMLConverterCID, NS_HTMLFORMATCONVERTER_CID);
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static NS_DEFINE_CID(kTextEncoderCID, NS_TEXT_ENCODER_CID);
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// private clipboard data flavors for html copy, used by editor when pasting
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#define kHTMLContext "text/_moz_htmlcontext"
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#define kHTMLInfo "text/_moz_htmlinfo"
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nsresult nsCopySupport::HTMLCopy(nsISelection *aSel, nsIDocument *aDoc, PRInt16 aClipboardID)
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{
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nsresult rv = NS_OK;
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nsCOMPtr<nsIDocumentEncoder> docEncoder;
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docEncoder = do_CreateInstance(NS_HTMLCOPY_ENCODER_CONTRACTID);
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NS_ENSURE_TRUE(docEncoder, NS_ERROR_FAILURE);
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PRBool bIsPlainTextContext = PR_FALSE;
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rv = IsPlainTextContext(aSel, aDoc, &bIsPlainTextContext);
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if (NS_FAILED(rv)) return rv;
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PRBool bIsHTMLCopy = !bIsPlainTextContext;
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PRUint32 flags = 0;
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nsAutoString mimeType;
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if (bIsHTMLCopy)
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mimeType = NS_LITERAL_STRING(kHTMLMime);
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else
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{
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flags |= nsIDocumentEncoder::OutputBodyOnly | nsIDocumentEncoder::OutputPreformatted;
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mimeType = NS_LITERAL_STRING(kUnicodeMime);
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}
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rv = docEncoder->Init(aDoc, mimeType, flags);
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if (NS_FAILED(rv)) return rv;
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rv = docEncoder->SetSelection(aSel);
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if (NS_FAILED(rv)) return rv;
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nsAutoString buffer, parents, info;
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if (bIsHTMLCopy)
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{
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// encode the selection as html with contextual info
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rv = docEncoder->EncodeToStringWithContext(buffer, parents, info);
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if (NS_FAILED(rv))
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return rv;
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}
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else
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{
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// encode the selection
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rv = docEncoder->EncodeToString(buffer);
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if (NS_FAILED(rv))
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return rv;
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}
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#ifdef IBMBIDI //ahmed
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rv = NS_OK;
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PRBool arabicCharset;
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nsCOMPtr<nsIDocument> doc = do_QueryInterface(aDoc);
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if (doc) {
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nsCOMPtr<nsIPresShell> shell;
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doc->GetShellAt(0, getter_AddRefs(shell));
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if (shell) {
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nsCOMPtr<nsIPresContext> context;
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shell->GetPresContext(getter_AddRefs(context) );
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if (context) {
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context->IsArabicEncoding(arabicCharset);
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if (arabicCharset) {
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nsCOMPtr<nsIUBidiUtils> bidiUtils = do_GetService("@mozilla.org/intl/unicharbidiutil;1");
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PRUint32 bidiOptions;
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PRBool isVisual;
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PRBool isBidiSystem;
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context->GetBidi(&bidiOptions);
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context->IsVisualMode(isVisual);
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context->GetIsBidiSystem(isBidiSystem);
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if ( (GET_BIDI_OPTION_CLIPBOARDTEXTMODE(bidiOptions) == IBMBIDI_CLIPBOARDTEXTMODE_LOGICAL)&&(isVisual)
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) {
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nsAutoString newBuffer;
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if (isBidiSystem) {
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if (GET_BIDI_OPTION_DIRECTION(bidiOptions) == IBMBIDI_TEXTDIRECTION_RTL) {
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bidiUtils->Conv_FE_06(buffer, newBuffer);
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}
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else {
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bidiUtils->Conv_FE_06_WithReverse(buffer, newBuffer);
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}
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}
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else { //nonbidisystem
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bidiUtils->HandleNumbers(buffer, newBuffer);//ahmed
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}
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buffer = newBuffer;
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}
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//Mohamed
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else {
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nsAutoString bidiCharset;
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context->GetBidiCharset(bidiCharset);
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if (bidiCharset.EqualsIgnoreCase("UTF-8") || (!isVisual)) {
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if ( (GET_BIDI_OPTION_CLIPBOARDTEXTMODE(bidiOptions) == IBMBIDI_CLIPBOARDTEXTMODE_VISUAL) || (!isBidiSystem) ) {
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nsAutoString newBuffer;
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bidiUtils->Conv_06_FE_WithReverse(buffer, newBuffer, GET_BIDI_OPTION_DIRECTION(bidiOptions));
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bidiUtils->HandleNumbers(newBuffer, buffer);
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}
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}
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}
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}
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}
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}
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}
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#endif // IBMBIDI
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// Get the Clipboard
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nsCOMPtr<nsIClipboard> clipboard(do_GetService(kCClipboardCID, &rv));
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if (NS_FAILED(rv))
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return rv;
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if ( clipboard )
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{
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// Create a transferable for putting data on the Clipboard
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nsCOMPtr<nsITransferable> trans = do_CreateInstance(kCTransferableCID);
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if ( trans )
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{
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if (bIsHTMLCopy)
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{
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// set up the data converter
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nsCOMPtr<nsIFormatConverter> htmlConverter = do_CreateInstance(kHTMLConverterCID);
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NS_ENSURE_TRUE(htmlConverter, NS_ERROR_FAILURE);
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trans->SetConverter(htmlConverter);
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}
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// get wStrings to hold clip data
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nsCOMPtr<nsISupportsWString> dataWrapper, contextWrapper, infoWrapper;
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dataWrapper = do_CreateInstance(NS_SUPPORTS_WSTRING_CONTRACTID);
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NS_ENSURE_TRUE(dataWrapper, NS_ERROR_FAILURE);
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if (bIsHTMLCopy)
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{
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contextWrapper = do_CreateInstance(NS_SUPPORTS_WSTRING_CONTRACTID);
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NS_ENSURE_TRUE(contextWrapper, NS_ERROR_FAILURE);
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infoWrapper = do_CreateInstance(NS_SUPPORTS_WSTRING_CONTRACTID);
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NS_ENSURE_TRUE(infoWrapper, NS_ERROR_FAILURE);
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}
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// populate the strings
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dataWrapper->SetData ( NS_CONST_CAST(PRUnichar*,buffer.get()) );
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if (bIsHTMLCopy)
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{
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contextWrapper->SetData ( NS_CONST_CAST(PRUnichar*,parents.get()) );
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infoWrapper->SetData ( NS_CONST_CAST(PRUnichar*,info.get()) );
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}
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// QI the data object an |nsISupports| so that when the transferable holds
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// onto it, it will addref the correct interface.
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nsCOMPtr<nsISupports> genericDataObj ( do_QueryInterface(dataWrapper) );
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if (bIsHTMLCopy)
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{
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if (buffer.Length())
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{
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// Add the html DataFlavor to the transferable
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trans->AddDataFlavor(kHTMLMime);
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trans->SetTransferData(kHTMLMime, genericDataObj, buffer.Length()*2);
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}
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if (parents.Length())
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{
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// Add the htmlcontext DataFlavor to the transferable
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trans->AddDataFlavor(kHTMLContext);
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genericDataObj = do_QueryInterface(contextWrapper);
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trans->SetTransferData(kHTMLContext, genericDataObj, parents.Length()*2);
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}
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if (info.Length())
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{
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// Add the htmlinfo DataFlavor to the transferable
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trans->AddDataFlavor(kHTMLInfo);
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genericDataObj = do_QueryInterface(infoWrapper);
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trans->SetTransferData(kHTMLInfo, genericDataObj, info.Length()*2);
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}
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}
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else
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{
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if (buffer.Length())
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{
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// Add the unicode DataFlavor to the transferable
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trans->AddDataFlavor(kUnicodeMime);
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trans->SetTransferData(kUnicodeMime, genericDataObj, buffer.Length()*2);
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}
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}
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// put the transferable on the clipboard
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clipboard->SetData(trans, nsnull, aClipboardID);
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}
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}
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return rv;
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}
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nsresult nsCopySupport::IsPlainTextContext(nsISelection *aSel, nsIDocument *aDoc, PRBool *aIsPlainTextContext)
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{
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nsresult rv;
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if (!aSel || !aIsPlainTextContext)
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return NS_ERROR_NULL_POINTER;
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*aIsPlainTextContext = PR_FALSE;
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nsCOMPtr<nsIDOMRange> range;
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nsCOMPtr<nsIDOMNode> commonParent;
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PRInt32 count = 0;
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rv = aSel->GetRangeCount(&count);
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NS_ENSURE_SUCCESS(rv, rv);
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// if selection is uninitialized return
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if (!count)
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return NS_ERROR_FAILURE;
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// we'll just use the common parent of the first range. Implicit assumption
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// here that multi-range selections are table cell selections, in which case
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// the common parent is somewhere in the table and we don't really care where.
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rv = aSel->GetRangeAt(0, getter_AddRefs(range));
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NS_ENSURE_SUCCESS(rv, rv);
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if (!range)
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return NS_ERROR_NULL_POINTER;
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range->GetCommonAncestorContainer(getter_AddRefs(commonParent));
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nsCOMPtr<nsIContent> tmp, selContent( do_QueryInterface(commonParent) );
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while (selContent)
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{
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// checking for selection inside a plaintext form widget
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nsCOMPtr<nsIAtom> atom;
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selContent->GetTag(*getter_AddRefs(atom));
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if (atom.get() == nsHTMLAtoms::input ||
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atom.get() == nsHTMLAtoms::textarea)
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{
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*aIsPlainTextContext = PR_TRUE;
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break;
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}
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if (atom.get() == nsHTMLAtoms::body)
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{
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// check for moz prewrap style on body. If it's there we are
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// in a plaintext editor. This is pretty cheezy but I haven't
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// found a good way to tell if we are in a plaintext editor.
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nsCOMPtr<nsIDOMElement> bodyElem = do_QueryInterface(selContent);
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nsAutoString wsVal;
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rv = bodyElem->GetAttribute(NS_LITERAL_STRING("style"), wsVal);
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if (NS_SUCCEEDED(rv) && (kNotFound != wsVal.Find(NS_LITERAL_STRING("-moz-pre-wrap").get())))
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{
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*aIsPlainTextContext = PR_TRUE;
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break;
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}
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}
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selContent->GetParent(*getter_AddRefs(tmp));
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selContent = tmp;
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}
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// also consider ourselves in a text widget if we can't find an html document
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nsCOMPtr<nsIHTMLDocument> htmlDoc = do_QueryInterface(aDoc);
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if (!htmlDoc) *aIsPlainTextContext = PR_TRUE;
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return NS_OK;
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}
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