Added support for KDE file dialogs.

chrome/browser/ui/gtk/dialogs_common.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // This file implements commond select dialog functionality between GTK and KDE.
 
 #include "chrome/browser/ui/gtk/dialogs_common.h"
 
+#include "base/environment.h"
 #include "base/file_util.h"
 #include "base/message_loop.h"
+#include "base/nix/xdg_util.h"
 #include "base/threading/thread.h"
 #include "base/threading/thread_restrictions.h"
 #include "content/browser/browser_thread.h"
 
 FilePath* SelectFileDialogImpl::last_saved_path_ = NULL;
 FilePath* SelectFileDialogImpl::last_opened_path_ = NULL;
 
 // static
 SelectFileDialog* SelectFileDialog::Create(Listener* listener) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  scoped_ptr<base::Environment> env(base::Environment::Create());
+  base::nix::DesktopEnvironment desktop =
+      base::nix::GetDesktopEnvironment(env.get());
+  if (desktop == base::nix::DESKTOP_ENVIRONMENT_KDE3 ||
+      desktop == base::nix::DESKTOP_ENVIRONMENT_KDE4) {
+    return SelectFileDialogImpl::NewSelectFileDialogImplKDE(listener);
+  }
   return SelectFileDialogImpl::NewSelectFileDialogImplGTK(listener);
 }
 
 SelectFileDialogImpl::SelectFileDialogImpl(Listener* listener)
     : SelectFileDialog(listener),
       file_type_index_(0),
       type_(SELECT_NONE) {
   if (!last_saved_path_) {
     last_saved_path_ = new FilePath();
     last_opened_path_ = new FilePath();
   }
 }
 
 SelectFileDialogImpl::~SelectFileDialogImpl() { }
 
 void SelectFileDialogImpl::ListenerDestroyed() {
   listener_ = NULL;
 }
 
 bool SelectFileDialogImpl::IsRunning(gfx::NativeWindow parent_window) const {
   return parents_.find(parent_window) != parents_.end();
 }
 
 bool SelectFileDialogImpl::CallDirectoryExistsOnUIThread(const FilePath& path) {
   base::ThreadRestrictions::ScopedAllowIO allow_io;
   return file_util::DirectoryExists(path);
 }