/**
 * @file llpresetsmanager.h
 * @brief Implementation for the LLPresetsManager class.
 *
 * $LicenseInfo:firstyear=2007&license=viewerlgpl$
 * 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_PRESETSMANAGER_H
#define LL_PRESETSMANAGER_H

#include "llcombobox.h"

#include <list>
#include <map>

static const std::string PRESETS_DEFAULT = "Default";
static const std::string PRESETS_DEFAULT_UPPER = "DEFAULT";
static const std::string PRESETS_DIR = "presets";
static const std::string PRESETS_GRAPHIC = "graphic";
static const std::string PRESETS_CAMERA = "camera";
static const std::string PRESETS_REAR = "Rear";
static const std::string PRESETS_FRONT = "Front";
static const std::string PRESETS_SIDE = "Side";
static const std::string PRESETS_VIEW_SUFFIX = " View";
static const std::string PRESETS_REAR_VIEW = PRESETS_REAR + PRESETS_VIEW_SUFFIX;
static const std::string PRESETS_FRONT_VIEW = PRESETS_FRONT + PRESETS_VIEW_SUFFIX;
static const std::string PRESETS_SIDE_VIEW = PRESETS_SIDE + PRESETS_VIEW_SUFFIX;

enum EDefaultOptions
{
    DEFAULT_SHOW,
    DEFAULT_TOP,
    DEFAULT_BOTTOM,
    DEFAULT_HIDE                // Do not display "Default" in a list
};

class LLPresetsManager : public LLSingleton<LLPresetsManager>
{
    LLSINGLETON(LLPresetsManager);
    ~LLPresetsManager();

public:

    typedef std::list<std::string> preset_name_list_t;
    typedef boost::signals2::signal<void()> preset_list_signal_t;

    void createMissingDefault(const std::string& subdirectory);
    void startWatching(const std::string& subdirectory);
    void triggerChangeCameraSignal();
    void triggerChangeSignal();
    static std::string getPresetsDir(const std::string& subdirectory);
    bool setPresetNamesInComboBox(const std::string& subdirectory, LLComboBox* combo, EDefaultOptions default_option);
    void loadPresetNamesFromDir(const std::string& subdirectory, preset_name_list_t& presets, EDefaultOptions default_option);
    bool savePreset(const std::string& subdirectory, std::string name, bool createDefault = false);
    void loadPreset(const std::string& subdirectory, std::string name);
    bool deletePreset(const std::string& subdirectory, std::string name);
    bool isCameraDirty();
    static void setCameraDirty(bool dirty);

    void createCameraDefaultPresets();

    bool isTemplateCameraPreset(std::string preset_name);
    bool isDefaultCameraPreset(std::string preset_name);
    void resetCameraPreset(std::string preset_name);
    bool createDefaultCameraPreset(std::string preset_name, bool force_reset = false);

    // Emitted when a preset gets loaded, deleted, or saved.
    boost::signals2::connection setPresetListChangeCameraCallback(const preset_list_signal_t::slot_type& cb);
    boost::signals2::connection setPresetListChangeCallback(const preset_list_signal_t::slot_type& cb);

    // Emitted when a preset gets loaded or saved.

    preset_name_list_t mPresetNames;

    preset_list_signal_t mPresetListChangeCameraSignal;
    preset_list_signal_t mPresetListChangeSignal;

  private:
    LOG_CLASS(LLPresetsManager);

    void getControlNames(std::vector<std::string>& names);
    static void settingChanged();

    boost::signals2::connection mCameraChangedSignal;

    static bool mCameraDirty;
    static bool mIgnoreChangedSignal;
};

#endif // LL_PRESETSMANAGER_H