XWIKI-8605: Editing a document in french, or other language provided as...

XWIKI-8605: Editing a document in french, or other language provided as translation, doesn't use the provided sheet
* The sheet is not applied for new translations because EditAction doesn't mark them with setTranslation(1).
* Copy the title from the default translation to the new translation and set the default locale of the new translation.
* New translations edited in inline mode are not saved correctly because editinline.vm doesn't submit the right language.

xwiki-platform-core/xwiki-platform-oldcore/src/main/java/com/xpn/xwiki/web/EditAction.java

@@ -96,6 +96,12 @@ public String render(XWikiContext context) throws XWikiException
                 // Edit a new translation.
                 tdoc = new XWikiDocument(doc.getDocumentReference());
                 tdoc.setLanguage(languageToEdit);
+                tdoc.setDefaultLocale(doc.getDefaultLocale());
+                // Mark the translation. It's important to know whether a document is a translation or not, especially
+                // for the sheet manager which needs to access the objects using the default document not one of its
+                // translations.
+                tdoc.setTranslation(1);
+                tdoc.setTitle(doc.getTitle());
                 tdoc.setContent(doc.getContent());
                 tdoc.setSyntax(doc.getSyntax());
                 tdoc.setAuthorReference(context.getUserReference());

xwiki-platform-core/xwiki-platform-web/src/main/webapp/templates/editinline.vm

@@ -55,7 +55,10 @@ $xwiki.ssfx.use('uicomponents/widgets/fullScreen.css', true)##
 <input type="hidden" name="xredirect" value="$!{escapetool.xml($request.get('xredirect'))}" />
 <input type="hidden" name="xnotification" value="$!{escapetool.xml($request.get('xnotification'))}" />
 <input type="hidden" name="template" value="$!{escapetool.xml($request.template)}" />
-<input type="hidden" name="language" value="$!{escapetool.xml($doc.language)}" />
+## We need to submit the language of the translated document because the inline edit mode is not limited to editing only
+## the objects, which are shared by all translations. We can also edit the content or the title of the document which are
+## specific to each translation and so we need to specify which translation is being edited.
+<input type="hidden" name="language" value="$!{escapetool.xml($tdoc.realLanguage)}" />
 #if("$!request.parent" != '')
   <input type="hidden" name="parent" value="$escapetool.xml($!request.parent)" />
 #end