chrome/browser/ui/libgtk2ui/select_file_dialog_impl.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4 //
   5 // This file implements common select dialog functionality between GTK and KDE.
   6
   7 #include "chrome/browser/ui/libgtk2ui/select_file_dialog_impl.h"
   8
   9 #include "base/environment.h"
  10 #include "base/files/file_util.h"
  11 #include "base/nix/xdg_util.h"
  12 #include "base/threading/thread_restrictions.h"
  13 #include "content/public/browser/browser_thread.h"
  14
  15 using content::BrowserThread;
  16
  17 namespace {
  18
  19 enum UseKdeFileDialogStatus {
  20   UNKNOWN,
  21   NO_KDE,
  22   YES_KDE
  23 };
  24
  25 UseKdeFileDialogStatus use_kde_ = UNKNOWN;
  26
  27 }  // namespace
  28
  29 namespace libgtk2ui {
  30
  31 base::FilePath* SelectFileDialogImpl::last_saved_path_ = NULL;
  32 base::FilePath* SelectFileDialogImpl::last_opened_path_ = NULL;
  33
  34 // static
  35 ui::SelectFileDialog* SelectFileDialogImpl::Create(
  36     ui::SelectFileDialog::Listener* listener,
  37     ui::SelectFilePolicy* policy) {
  38   DCHECK_CURRENTLY_ON(BrowserThread::UI);
  39   if (use_kde_ == UNKNOWN) {
  40     // Start out assumimg we are not going to use KDE.
  41     use_kde_ = NO_KDE;
  42
  43     // Check to see if KDE is the desktop environment.
  44     scoped_ptr<base::Environment> env(base::Environment::Create());
  45     base::nix::DesktopEnvironment desktop =
  46         base::nix::GetDesktopEnvironment(env.get());
  47     if (desktop == base::nix::DESKTOP_ENVIRONMENT_KDE3 ||
  48         desktop == base::nix::DESKTOP_ENVIRONMENT_KDE4) {
  49       // Check to see if the user dislikes the KDE file dialog.
  50       if (!env->HasVar("NO_CHROME_KDE_FILE_DIALOG")) {
  51         // Check to see if the KDE dialog works.
  52         if (SelectFileDialogImpl::CheckKDEDialogWorksOnUIThread()) {
  53           use_kde_ = YES_KDE;
  54         }
  55       }
  56     }
  57   }
  58
  59   if (use_kde_ == NO_KDE)
  60     return SelectFileDialogImpl::NewSelectFileDialogImplGTK(listener, policy);
  61
  62   scoped_ptr<base::Environment> env(base::Environment::Create());
  63   base::nix::DesktopEnvironment desktop =
  64       base::nix::GetDesktopEnvironment(env.get());
  65   return SelectFileDialogImpl::NewSelectFileDialogImplKDE(
  66       listener, policy, desktop);
  67 }
  68
  69 SelectFileDialogImpl::SelectFileDialogImpl(Listener* listener,
  70                                            ui::SelectFilePolicy* policy)
  71     : SelectFileDialog(listener, policy),
  72       file_type_index_(0),
  73       type_(SELECT_NONE) {
  74   if (!last_saved_path_) {
  75     last_saved_path_ = new base::FilePath();
  76     last_opened_path_ = new base::FilePath();
  77   }
  78 }
  79
  80 SelectFileDialogImpl::~SelectFileDialogImpl() { }
  81
  82 void SelectFileDialogImpl::ListenerDestroyed() {
  83   listener_ = NULL;
  84 }
  85
  86 bool SelectFileDialogImpl::CallDirectoryExistsOnUIThread(
  87     const base::FilePath& path) {
  88   base::ThreadRestrictions::ScopedAllowIO allow_io;
  89   return base::DirectoryExists(path);
  90 }
  91
  92 }  // namespace libgtk2ui