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/**
* @file llsidetraypanelcontainer.h
* @brief LLSideTrayPanelContainer class declaration
*
* $LicenseInfo:firstyear=2009&license=viewerlgpl$
* 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_LLSIDETRAY_PANEL_CONTAINER_H
#define LL_LLSIDETRAY_PANEL_CONTAINER_H

#include "lltabcontainer.h"

/**
* LLSideTrayPanelContainer class acts like LLTabContainer with invisible tabs.
* It is designed to make panel switching easier, avoid setVisible(true) setVisible(false)
* calls and related workarounds.
* use onOpen to open sub panel, pass the name of panel to open
* in key[PARAM_SUB_PANEL_NAME].
* LLSideTrayPanelContainer also implements panel navigation history - it allows to
* open previous or next panel if navigation history is available(after user
* has opened two or more panels). *NOTE - only back navigation is implemented so far.
*/
class LLSideTrayPanelContainer : public LLTabContainer
{
public:

    struct Params : public LLInitParam::Block<Params, LLTabContainer::Params>
    {
        Optional<std::string> default_panel_name;
        Params();
    };

    /**
    * Opens sub panel
    * @param key - params to be passed to panel, use key[PARAM_SUB_PANEL_NAME]
    * to specify panel name to be opened.
    */
    /*virtual*/ void onOpen(const LLSD& key);

    /**
     * Opens given subpanel.
     */
    void openPanel(const std::string& panel_name, const LLSD& key = LLSD::emptyMap());

    /**
    * Opens previous panel from panel navigation history.
    */
    void openPreviousPanel();

    /**
    * Overrides LLTabContainer::handleKeyHere to disable panel switch on
    * Alt + Left/Right button press.
    */
    bool handleKeyHere(KEY key, MASK mask);

    /**
    * Name of parameter that stores panel name to open.
    */
    static std::string PARAM_SUB_PANEL_NAME;

protected:
    LLSideTrayPanelContainer(const Params& p);
    friend class LLUICtrlFactory;

    /**
    * std::string - name of panel
    * S32 - index of previous panel
    * *NOTE - no forward navigation implemented yet
    */
    typedef std::map<std::string, S32> panel_navigation_history_t;

    // Navigation history
    panel_navigation_history_t mPanelHistory;
    std::string mDefaultPanelName;
};

#endif //LL_LLSIDETRAY_PANEL_CONTAINER_H