// 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.

#ifndef CHROME_BROWSER_CHROMEOS_OPTIONS_VPN_CONFIG_VIEW_H_
#define CHROME_BROWSER_CHROMEOS_OPTIONS_VPN_CONFIG_VIEW_H_
#pragma once

#include <string>

#include "base/string16.h"
#include "chrome/browser/chromeos/cros/network_library.h"
#include "chrome/browser/chromeos/options/network_config_view.h"
#include "chrome/browser/ui/shell_dialogs.h"
#include "ui/base/models/combobox_model.h"
#include "views/controls/button/button.h"
#include "views/controls/button/native_button.h"
#include "views/controls/combobox/combobox.h"
#include "views/controls/textfield/textfield_controller.h"
#include "views/view.h"

namespace views {
class Label;
}

namespace chromeos {

// A dialog box to allow configuration of VPN connection.
class VPNConfigView : public ChildNetworkConfigView,
                      public views::TextfieldController,
                      public views::ButtonListener,
                      public views::Combobox::Listener {
 public:
  VPNConfigView(NetworkConfigView* parent, VirtualNetwork* vpn);
  explicit VPNConfigView(NetworkConfigView* parent);
  virtual ~VPNConfigView();

  // views::TextfieldController methods.
  virtual void ContentsChanged(views::Textfield* sender,
                               const string16& new_contents);
  virtual bool HandleKeyEvent(views::Textfield* sender,
                              const views::KeyEvent& key_event);

  // views::ButtonListener
  virtual void ButtonPressed(views::Button* sender, const views::Event& event);

  // views::Combobox::Listener
  virtual void ItemChanged(views::Combobox* combo_box,
                           int prev_index, int new_index);

  // ChildNetworkConfigView implementation.
  virtual string16 GetTitle() OVERRIDE;
  virtual bool CanLogin() OVERRIDE;
  virtual bool Login() OVERRIDE;
  virtual void Cancel() OVERRIDE;
  virtual void InitFocus() OVERRIDE;

 private:
  class ProviderTypeComboboxModel : public ui::ComboboxModel {
   public:
    ProviderTypeComboboxModel() {}
    virtual ~ProviderTypeComboboxModel() {}
    virtual int GetItemCount();
    virtual string16 GetItemAt(int index);
   private:
    DISALLOW_COPY_AND_ASSIGN(ProviderTypeComboboxModel);
  };

  class UserCertComboboxModel : public ui::ComboboxModel {
   public:
    UserCertComboboxModel();
    virtual ~UserCertComboboxModel() {}
    virtual int GetItemCount();
    virtual string16 GetItemAt(int index);
   private:
    std::vector<std::string> user_certs_;
    DISALLOW_COPY_AND_ASSIGN(UserCertComboboxModel);
  };

  // Initializes data members and create UI controls.
  void Init(VirtualNetwork* vpn);

  void EnableControls();

  // Update state of the Login button.
  void UpdateCanLogin();

  // Update the error text label.
  void UpdateErrorLabel();

  // Get text from input field.
  const std::string GetTextFromField(views::Textfield* textfield,
                                     bool trim_whitespace) const;

  // Convenience methods to get text from input field or cached VirtualNetwork.
  const std::string GetService() const;
  const std::string GetServer() const;
  const std::string GetPSKPassphrase() const;
  const std::string GetUsername() const;
  const std::string GetUserPassphrase() const;

  std::string server_hostname_;
  string16 service_name_from_server_;
  bool service_text_modified_;
  VirtualNetwork::ProviderType provider_type_;

  views::Label* service_text_;
  views::Textfield* service_textfield_;
  views::Label* server_text_;
  views::Textfield* server_textfield_;
  views::Combobox* provider_type_combobox_;
  views::Label* provider_type_text_label_;
  views::Label* psk_passphrase_label_;
  views::Textfield* psk_passphrase_textfield_;
  views::Label* user_cert_label_;
  views::Combobox* user_cert_combobox_;
  views::Textfield* username_textfield_;
  views::Textfield* user_passphrase_textfield_;
  views::Label* error_label_;

  DISALLOW_COPY_AND_ASSIGN(VPNConfigView);
};

}  // namespace chromeos

#endif  // CHROME_BROWSER_CHROMEOS_OPTIONS_VPN_CONFIG_VIEW_H_