shell dialogs: Move the linux implementations.

chrome/browser/ui/gtk/select_file_dialog_impl.cc

-// Copyright (c) 2012 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 common select dialog functionality between GTK and KDE.
-
-#include "chrome/browser/ui/gtk/select_file_dialog_impl.h"
-
-#include "base/environment.h"
-#include "base/file_util.h"
-#include "base/nix/xdg_util.h"
-#include "base/threading/thread_restrictions.h"
-#include "content/public/browser/browser_thread.h"
-
-using content::BrowserThread;
-
-namespace {
-
-enum UseKdeFileDialogStatus {
-  UNKNOWN,
-  NO_KDE,
-  YES_KDE
-};
-
-UseKdeFileDialogStatus use_kde_ = UNKNOWN;
-
-}  // namespace
-
-FilePath* SelectFileDialogImpl::last_saved_path_ = NULL;
-FilePath* SelectFileDialogImpl::last_opened_path_ = NULL;
-
-// static
-SelectFileDialog* SelectFileDialog::Create(Listener* listener,
-                                           ui::SelectFilePolicy* policy) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  if (use_kde_ == UNKNOWN) {
-    // Start out assumimg we are not going to use KDE.
-    use_kde_ = NO_KDE;
-
-    // Check to see if KDE is the desktop environment.
-    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) {
-      // Check to see if the user dislikes the KDE file dialog.
-      if (!env->HasVar("NO_CHROME_KDE_FILE_DIALOG")) {
-        // Check to see if the KDE dialog works.
-        if (SelectFileDialogImpl::CheckKDEDialogWorksOnUIThread()) {
-          use_kde_ = YES_KDE;
-        }
-      }
-    }
-  }
-
-  if (use_kde_ == NO_KDE)
-    return SelectFileDialogImpl::NewSelectFileDialogImplGTK(listener, policy);
-
-  scoped_ptr<base::Environment> env(base::Environment::Create());
-  base::nix::DesktopEnvironment desktop =
-      base::nix::GetDesktopEnvironment(env.get());
-  return SelectFileDialogImpl::NewSelectFileDialogImplKDE(
-      listener, policy, desktop);
-}
-
-SelectFileDialogImpl::SelectFileDialogImpl(Listener* listener,
-                                           ui::SelectFilePolicy* policy)
-    : SelectFileDialog(listener, policy),
-      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);
-}