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 | /**
 * @dir lldirpicker.h
 * @brief OS-specific dir picker
 *
 * $LicenseInfo:firstyear=2001&license=viewerlgpl$
 * 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
 * $/LicenseInfo$
 */
// OS specific dir selection dialog. This is implemented as a
// singleton class, so call the instance() method to get the working
// instance.
#ifndef LL_LLDIRPICKER_H
#define LL_LLDIRPICKER_H
#include "stdtypes.h"
#include "llthread.h"
#include <queue>
#if LL_WINDOWS
#include <shlobj.h>
#endif
#if LL_DARWIN
// AssertMacros.h does bad things.
#undef verify
#undef check
#undef require
#include <vector>
#include "llstring.h"
#endif
class LLFilePicker;
class LLDirPicker
{
public:
    bool getDir(std::string* filename, bool blocking = true);
    std::string getDirName();
    // clear any lists of buffers or whatever, and make sure the dir
    // picker isn't locked.
    void reset();
private:
    enum
    {
        SINGLE_DIRNAME_BUFFER_SIZE = 1024,
        //DIRNAME_BUFFER_SIZE = 65536
        DIRNAME_BUFFER_SIZE = 65000
    };
    void buildDirname( void );
    bool check_local_file_access_enabled();
#if LL_LINUX || LL_DARWIN
    // On Linux we just implement LLDirPicker on top of LLFilePicker
    LLFilePicker *mFilePicker;
#endif
    std::string* mFileName;
    std::string  mDir;
    bool mLocked;
    void *pDialog;
    boost::signals2::connection mEventListener;
public:
    // don't call these directly please.
    LLDirPicker();
    ~LLDirPicker();
};
class LLDirPickerThread : public LLThread
{
public:
    static std::queue<LLDirPickerThread*> sDeadQ;
    static LLMutex* sMutex;
    static void initClass();
    static void cleanupClass();
    static void clearDead();
    std::vector<std::string> mResponses;
    std::string mProposedName;
    typedef boost::signals2::signal<void(const std::vector<std::string>& filenames, std::string proposed_name)> dir_picked_signal_t;
    LLDirPickerThread(const dir_picked_signal_t::slot_type& cb, const std::string &proposed_name);
    ~LLDirPickerThread();
    void getFile();
    virtual void run();
    virtual void notify(const std::vector<std::string>& filenames);
private:
    dir_picked_signal_t*        mFilePickedSignal;
};
#endif
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