ui/shell_dialogs/gtk/select_file_dialog_impl.cc

   1 // Copyright (c) 2013 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 "ui/shell_dialogs/gtk/select_file_dialog_impl.h"
   8
   9 #include "base/environment.h"
  10 #include "base/file_util.h"
  11 #include "base/nix/xdg_util.h"
  12 #include "base/threading/thread_restrictions.h"
  13
  14 namespace {
  15
  16 enum UseKdeFileDialogStatus {
  17   UNKNOWN,
  18   NO_KDE,
  19   YES_KDE
  20 };
  21
  22 UseKdeFileDialogStatus use_kde_ = UNKNOWN;
  23
  24 }  // namespace
  25
  26 namespace ui {
  27
  28 base::FilePath* SelectFileDialogImpl::last_saved_path_ = NULL;
  29 base::FilePath* SelectFileDialogImpl::last_opened_path_ = NULL;
  30
  31 // static
  32 SelectFileDialog* CreateLinuxSelectFileDialog(
  33     SelectFileDialog::Listener* listener,
  34     SelectFilePolicy* policy) {
  35   if (use_kde_ == UNKNOWN) {
  36     // Start out assumimg we are not going to use KDE.
  37     use_kde_ = NO_KDE;
  38
  39     // Check to see if KDE is the desktop environment.
  40     scoped_ptr<base::Environment> env(base::Environment::Create());
  41     base::nix::DesktopEnvironment desktop =
  42         base::nix::GetDesktopEnvironment(env.get());
  43     if (desktop == base::nix::DESKTOP_ENVIRONMENT_KDE3 ||
  44         desktop == base::nix::DESKTOP_ENVIRONMENT_KDE4) {
  45       // Check to see if the user dislikes the KDE file dialog.
  46       if (!env->HasVar("NO_CHROME_KDE_FILE_DIALOG")) {
  47         // Check to see if the KDE dialog works.
  48         if (SelectFileDialogImpl::CheckKDEDialogWorksOnUIThread()) {
  49           use_kde_ = YES_KDE;
  50         }
  51       }
  52     }
  53   }
  54
  55   if (use_kde_ == NO_KDE)
  56     return SelectFileDialogImpl::NewSelectFileDialogImplGTK(listener, policy);
  57
  58   scoped_ptr<base::Environment> env(base::Environment::Create());
  59   base::nix::DesktopEnvironment desktop =
  60       base::nix::GetDesktopEnvironment(env.get());
  61   return SelectFileDialogImpl::NewSelectFileDialogImplKDE(
  62       listener, policy, desktop);
  63 }
  64
  65 SelectFileDialogImpl::SelectFileDialogImpl(Listener* listener,
  66                                            ui::SelectFilePolicy* policy)
  67     : SelectFileDialog(listener, policy),
  68       file_type_index_(0),
  69       type_(SELECT_NONE) {
  70   if (!last_saved_path_) {
  71     last_saved_path_ = new base::FilePath();
  72     last_opened_path_ = new base::FilePath();
  73   }
  74 }
  75
  76 SelectFileDialogImpl::~SelectFileDialogImpl() { }
  77
  78 void SelectFileDialogImpl::ListenerDestroyed() {
  79   listener_ = NULL;
  80 }
  81
  82 bool SelectFileDialogImpl::IsRunning(gfx::NativeWindow parent_window) const {
  83   return parents_.find(parent_window) != parents_.end();
  84 }
  85
  86 bool SelectFileDialogImpl::CallDirectoryExistsOnUIThread(
  87     const base::FilePath& path) {
  88   base::ThreadRestrictions::ScopedAllowIO allow_io;
  89   return file_util::DirectoryExists(path);
  90 }
  91
  92 }  // namespace ui