/**
 * @file llpanellogin.h
 * @brief Login username entry fields.
 *
 * $LicenseInfo:firstyear=2002&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2010, Linden Research, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation;
 * version 2.1 of the License only.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
 * $/LicenseInfo$
 */

#ifndef LL_LLPANELLOGIN_H
#define LL_LLPANELLOGIN_H

#include "llpanel.h"
#include "llpointer.h"          // LLPointer<>
#include "llmediactrl.h"    // LLMediaCtrlObserver
#include <boost/scoped_ptr.hpp>

class LLLineEditor;
class LLUIImage;
class LLPanelLoginListener;
class LLSLURL;
class LLCredential;

class LLPanelLogin:
    public LLPanel,
    public LLViewerMediaObserver
{
    LOG_CLASS(LLPanelLogin);
public:
    LLPanelLogin(const LLRect &rect,
                void (*callback)(S32 option, void* user_data),
                void *callback_data);
    ~LLPanelLogin();

    virtual void setFocus( BOOL b );

    static void show(const LLRect &rect,
        void (*callback)(S32 option, void* user_data),
        void* callback_data);
    static void reshapePanel();

    static void populateFields(LLPointer<LLCredential> credential, bool remember_user, bool remember_psswrd);
    static void resetFields();
    static void getFields(LLPointer<LLCredential>& credential, bool& remember_user, bool& remember_psswrd);

    static BOOL isCredentialSet() { return sCredentialSet; }

    static BOOL areCredentialFieldsDirty();
    static void setLocation(const LLSLURL& slurl);
    static void autologinToLocation(const LLSLURL& slurl);

    /// Call when preferences that control visibility may have changed
    static void updateLocationSelectorsVisibility();

    static void closePanel();

    void setSiteIsAlive( bool alive );

    static void loadLoginPage();
    static void giveFocus();
    static void setAlwaysRefresh(bool refresh);

    // inherited from LLViewerMediaObserver
    /*virtual*/ void handleMediaEvent(LLPluginClassMedia* self, EMediaEvent event);
    static void updateServer();  // update the combo box, change the login page to the new server, clear the combo

    /// to be called from LLStartUp::setStartSLURL
    static void onUpdateStartSLURL(const LLSLURL& new_start_slurl);

    // called from prefs when initializing panel
    static bool getShowFavorites();

    // extract name from cred in a format apropriate for username field
    static std::string getUserName(const LLPointer<LLCredential> &cred);

private:
    friend class LLPanelLoginListener;
    void addFavoritesToStartLocation();
    void addUsersWithFavoritesToUsername();
    void onSelectServer();
    void onLocationSLURL();

    static void setFields(LLPointer<LLCredential> credential);

    static void onClickConnect(bool commit_fields = true);
    static void onClickNewAccount(void*);
    static void onClickVersion(void*);
    static void onClickForgotPassword(void*);
    static void onClickSignUp(void*);
    static void onUserNameTextEnty(void*);
    static void onUserListCommit(void*);
    static void onRememberUserCheck(void*);
    static void onRememberPasswordCheck(void*);
    static void onPassKey(LLLineEditor* caller, void* user_data);
    static void updateServerCombo();

private:
    std::unique_ptr<LLPanelLoginListener> mListener;

    void updateLoginButtons();
    void populateUserList(LLPointer<LLCredential> credential);

    void            (*mCallback)(S32 option, void *userdata);
    void*           mCallbackData;

    BOOL            mPasswordModified;
    bool            mShowFavorites;

    static LLPanelLogin* sInstance;
    static BOOL     sCapslockDidNotification;
    bool            mFirstLoginThisInstall;

    static BOOL sCredentialSet;

    unsigned int mUsernameLength;
    unsigned int mPasswordLength;
    unsigned int mLocationLength;
};

#endif