diff -r 000000000000 -r 6474c204b198 uriloader/exthandler/unix/nsMIMEInfoUnix.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/uriloader/exthandler/unix/nsMIMEInfoUnix.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,184 @@
+/* -*- Mode: C++; tab-width: 3; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifdef MOZ_WIDGET_QT
+#include <QDesktopServices>
+#include <QUrl>
+#include <QString>
+#if (MOZ_ENABLE_CONTENTACTION)
+#include <contentaction/contentaction.h>
+#include "nsContentHandlerApp.h"
+#endif
+#endif
+
+#include "nsMIMEInfoUnix.h"
+#include "nsGNOMERegistry.h"
+#include "nsIGIOService.h"
+#include "nsNetCID.h"
+#include "nsIIOService.h"
+#include "nsIGnomeVFSService.h"
+#include "nsAutoPtr.h"
+#ifdef MOZ_ENABLE_DBUS
+#include "nsDBusHandlerApp.h"
+#endif
+
+nsresult
+nsMIMEInfoUnix::LoadUriInternal(nsIURI * aURI)
+{
+  nsresult rv = nsGNOMERegistry::LoadURL(aURI);
+
+#ifdef MOZ_WIDGET_QT
+  if (NS_FAILED(rv)) {
+    nsAutoCString spec;
+    aURI->GetAsciiSpec(spec);
+    if (QDesktopServices::openUrl(QUrl(spec.get()))) {
+      rv = NS_OK;
+    }
+  }
+#endif
+
+  return rv;
+}
+
+NS_IMETHODIMP
+nsMIMEInfoUnix::GetHasDefaultHandler(bool *_retval)
+{
+  // if mDefaultApplication is set, it means the application has been set from
+  // either /etc/mailcap or ${HOME}/.mailcap, in which case we don't want to
+  // give the GNOME answer.
+  if (mDefaultApplication)
+    return nsMIMEInfoImpl::GetHasDefaultHandler(_retval);
+
+  *_retval = false;
+
+  if (mClass ==  eProtocolInfo) {
+    *_retval = nsGNOMERegistry::HandlerExists(mSchemeOrType.get());
+  } else {
+    nsRefPtr<nsMIMEInfoBase> mimeInfo = nsGNOMERegistry::GetFromType(mSchemeOrType);
+    if (!mimeInfo) {
+      nsAutoCString ext;
+      nsresult rv = GetPrimaryExtension(ext);
+      if (NS_SUCCEEDED(rv)) {
+        mimeInfo = nsGNOMERegistry::GetFromExtension(ext);
+      }
+    }
+    if (mimeInfo)
+      *_retval = true;
+  }
+
+  if (*_retval)
+    return NS_OK;
+
+#if defined(MOZ_ENABLE_CONTENTACTION)
+  ContentAction::Action action = 
+    ContentAction::Action::defaultActionForFile(QUrl(), QString(mSchemeOrType.get()));
+  if (action.isValid()) {
+    *_retval = true;
+    return NS_OK;
+  }
+#endif
+
+  return NS_OK;
+}
+
+nsresult
+nsMIMEInfoUnix::LaunchDefaultWithFile(nsIFile *aFile)
+{
+  // if mDefaultApplication is set, it means the application has been set from
+  // either /etc/mailcap or ${HOME}/.mailcap, in which case we don't want to
+  // give the GNOME answer.
+  if (mDefaultApplication)
+    return nsMIMEInfoImpl::LaunchDefaultWithFile(aFile);
+
+  nsAutoCString nativePath;
+  aFile->GetNativePath(nativePath);
+
+#if defined(MOZ_ENABLE_CONTENTACTION)
+  QUrl uri = QUrl::fromLocalFile(QString::fromUtf8(nativePath.get()));
+  ContentAction::Action action =
+    ContentAction::Action::defaultActionForFile(uri, QString(mSchemeOrType.get()));
+  if (action.isValid()) {
+    action.trigger();
+    return NS_OK;
+  }
+  return NS_ERROR_FAILURE;
+#endif
+
+  nsCOMPtr<nsIGIOService> giovfs = do_GetService(NS_GIOSERVICE_CONTRACTID);
+  nsAutoCString uriSpec;
+  if (giovfs) {
+    // nsGIOMimeApp->Launch wants a URI string instead of local file
+    nsresult rv;
+    nsCOMPtr<nsIIOService> ioservice = do_GetService(NS_IOSERVICE_CONTRACTID, &rv);
+    NS_ENSURE_SUCCESS(rv, rv);
+    nsCOMPtr<nsIURI> uri;
+    rv = ioservice->NewFileURI(aFile, getter_AddRefs(uri));
+    NS_ENSURE_SUCCESS(rv, rv);
+    uri->GetSpec(uriSpec);
+  }
+
+  nsCOMPtr<nsIGnomeVFSService> gnomevfs = do_GetService(NS_GNOMEVFSSERVICE_CONTRACTID);
+  if (giovfs) {
+    nsCOMPtr<nsIGIOMimeApp> app;
+    if (NS_SUCCEEDED(giovfs->GetAppForMimeType(mSchemeOrType, getter_AddRefs(app))) && app)
+      return app->Launch(uriSpec);
+  } else if (gnomevfs) {
+    /* Fallback to GnomeVFS */
+    nsCOMPtr<nsIGnomeVFSMimeApp> app;
+    if (NS_SUCCEEDED(gnomevfs->GetAppForMimeType(mSchemeOrType, getter_AddRefs(app))) && app)
+      return app->Launch(nativePath);
+  }
+
+  // If we haven't got an app we try to get a valid one by searching for the
+  // extension mapped type
+  nsRefPtr<nsMIMEInfoBase> mimeInfo = nsGNOMERegistry::GetFromExtension(nativePath);
+  if (mimeInfo) {
+    nsAutoCString type;
+    mimeInfo->GetType(type);
+    if (giovfs) {
+      nsCOMPtr<nsIGIOMimeApp> app;
+      if (NS_SUCCEEDED(giovfs->GetAppForMimeType(type, getter_AddRefs(app))) && app)
+        return app->Launch(uriSpec);
+    } else if (gnomevfs) {
+      nsCOMPtr<nsIGnomeVFSMimeApp> app;
+      if (NS_SUCCEEDED(gnomevfs->GetAppForMimeType(type, getter_AddRefs(app))) && app)
+        return app->Launch(nativePath);
+    }
+  }
+
+  if (!mDefaultApplication)
+    return NS_ERROR_FILE_NOT_FOUND;
+
+  return LaunchWithIProcess(mDefaultApplication, nativePath);
+}
+
+#if defined(MOZ_ENABLE_CONTENTACTION)
+NS_IMETHODIMP
+nsMIMEInfoUnix::GetPossibleApplicationHandlers(nsIMutableArray ** aPossibleAppHandlers)
+{
+  if (!mPossibleApplications) {
+    mPossibleApplications = do_CreateInstance(NS_ARRAY_CONTRACTID);
+
+    if (!mPossibleApplications)
+      return NS_ERROR_OUT_OF_MEMORY;
+
+    QList<ContentAction::Action> actions =
+      ContentAction::Action::actionsForFile(QUrl(), QString(mSchemeOrType.get()));
+
+    for (int i = 0; i < actions.size(); ++i) {
+      nsContentHandlerApp* app =
+        new nsContentHandlerApp(nsString((char16_t*)actions[i].name().data()), 
+                                mSchemeOrType, actions[i]);
+      mPossibleApplications->AppendElement(app, false);
+    }
+  }
+
+  *aPossibleAppHandlers = mPossibleApplications;
+  NS_ADDREF(*aPossibleAppHandlers);
+  return NS_OK;
+}
+#endif
+