text: // 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.
  
  #include "chrome/browser/ui/chrome_select_file_policy.h"
  
  #include "base/bind.h"
  #include "base/callback.h"
  #include "base/logging.h"
  #include "base/prefs/pref_service.h"
  #include "chrome/browser/browser_process.h"
  #include "chrome/browser/infobars/infobar_service.h"
  #include "chrome/browser/infobars/simple_alert_infobar_delegate.h"
  #include "chrome/common/pref_names.h"
  #include "grit/generated_resources.h"
  #include "ui/base/l10n/l10n_util.h"
  
  ChromeSelectFilePolicy::ChromeSelectFilePolicy(
      content::WebContents* source_contents)
      : source_contents_(source_contents) {
  }
  
  ChromeSelectFilePolicy::~ChromeSelectFilePolicy() {}
  
  bool ChromeSelectFilePolicy::CanOpenSelectFileDialog() {
    return FileSelectDialogsAllowed();
  }
  
  void ChromeSelectFilePolicy::SelectFileDenied() {
    // Show the InfoBar saying that file-selection dialogs are disabled.
    if (source_contents_) {
      SimpleAlertInfoBarDelegate::Create(
          InfoBarService::FromWebContents(source_contents_),
          infobars::InfoBarDelegate::kNoIconID,
          l10n_util::GetStringUTF16(IDS_FILE_SELECTION_DIALOG_INFOBAR), true);
    } else {
      LOG(WARNING) << "File-selection dialogs are disabled but no WebContents "
                   << "is given to display the InfoBar.";
    }
  }
  
  // static
  bool ChromeSelectFilePolicy::FileSelectDialogsAllowed() {
    DCHECK(g_browser_process);
  
    // local_state() can return NULL for tests.
    if (!g_browser_process->local_state())
      return false;
  
    return !g_browser_process->local_state()->FindPreference(
               prefs::kAllowFileSelectionDialogs) ||
           g_browser_process->local_state()->GetBoolean(
               prefs::kAllowFileSelectionDialogs);
  }
  