//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose: Declaration of FileOpenDialog class, a generic open/save as file
// dialog
//
// $NoKeywords: $
//===========================================================================//

#ifndef FILEOPENDIALOG_H
#define FILEOPENDIALOG_H

#ifdef _WIN32
#pragma once
#endif

#include "vgui_controls/Frame.h"

namespace vgui {

class FileCompletionEdit;  // local
class InputDialog;

//-----------------------------------------------------------------------------
// Purpose: generic open/save as file dialog
//-----------------------------------------------------------------------------
enum FileOpenDialogType_t {
    FOD_SAVE = 0,
    FOD_OPEN,
    FOD_SELECT_DIRECTORY,
};

class FileOpenDialog : public vgui::Frame {
    DECLARE_CLASS_SIMPLE(FileOpenDialog, Frame);

   public:
    // NOTE: Backward compat constructor
    FileOpenDialog(Panel *parent, const char *title, bool bOpenFile,
                   KeyValues *pContextKeyValues = 0);

    // The context keyvalues are added to all messages sent by this dialog if
    // they are specified
    FileOpenDialog(Panel *parent, const char *title, FileOpenDialogType_t type,
                   KeyValues *pContextKeyValues = 0);
    ~FileOpenDialog();

    // Set the directory the file search starts in
    void SetStartDirectory(const char *dir);

    // Sets the start directory context (and resets the start directory in the
    // process) NOTE: If you specify a startdir context, then if you've already
    // opened a file with that same start dir context before, it will start in
    // the same directory it ended up in.
    void SetStartDirectoryContext(const char *pContext,
                                  const char *pDefaultDir);

    // Add filters for the drop down combo box
    // The filter info, if specified, gets sent back to the app in the
    // FileSelected message
    void AddFilter(const char *filter, const char *filterName, bool bActive,
                   const char *pFilterInfo = NULL);

    // Activate the dialog
    // NOTE: The argument is there for backward compat
    void DoModal(bool bUnused = false);

    // Get the directory this is currently in
    void GetCurrentDirectory(char *buf, int bufSize);

    // Get the last selected file name
    void GetSelectedFileName(char *buf, int bufSize);

    /*
            messages sent:
                    "FileSelected"
                            "fullpath"	// specifies the fullpath of the file
                            "filterinfo"	// Returns the filter info
       associated with the active filter "FileSelectionCancelled"
    */

   protected:
    virtual void OnCommand(const char *command);
    virtual void ApplySchemeSettings(IScheme *pScheme);
    virtual void OnClose();
    virtual void OnKeyCodeTyped(ButtonCode_t code);

    // handles the open button being pressed
    // checks on what has changed and acts accordingly
    MESSAGE_FUNC(OnOpen, "OnOpen");
    MESSAGE_FUNC(OnSelectFolder, "SelectFolder");
    MESSAGE_FUNC(OnFolderUp, "OnFolderUp");
    MESSAGE_FUNC(OnNewFolder, "OnNewFolder");
    MESSAGE_FUNC(OnOpenInExplorer, "OpenInExplorer");

    MESSAGE_FUNC(PopulateFileList, "PopulateFileList");
    MESSAGE_FUNC(PopulateDriveList, "PopulateDriveList");
    MESSAGE_FUNC(PopulateFileNameCompletion, "PopulateFileNameCompletion");

    // moves the directory structure up
    virtual void MoveUpFolder();

    // validates that the current path is valid
    virtual void ValidatePath();

    // handles an item in the list being selected
    MESSAGE_FUNC(OnItemSelected, "ItemSelected");
    MESSAGE_FUNC(OnListItemSelected, "ListItemSelected") { OnItemSelected(); }

    // changes directories in response to selecting drives from the combo box
    MESSAGE_FUNC_PARAMS(OnTextChanged, "TextChanged", kv);

    MESSAGE_FUNC(OnInputCanceled, "InputCanceled");
    MESSAGE_FUNC_PARAMS(OnInputCompleted, "InputCompleted", data);

   private:
    // Necessary because we have 2 constructors
    void Init(const char *title, KeyValues *pContextKeyValues);

    // Does the specified extension match something in the filter list?
    bool ExtensionMatchesFilter(const char *pExt);

    // Choose the first non *.* filter in the filter list
    void ChooseExtension(char *pExt, int nBufLen);

    // Saves the file to the start dir context
    void SaveFileToStartDirContext(const char *pFullPath);

    // Posts a file selected message
    void PostFileSelectedMessage(const char *pFileName);

    // Creates a new folder
    void NewFolder(char const *folderName);

    vgui::ComboBox *m_pFullPathEdit;
    vgui::ListPanel *m_pFileList;

    FileCompletionEdit *m_pFileNameEdit;

    vgui::ComboBox *m_pFileTypeCombo;
    vgui::Button *m_pOpenButton;
    vgui::Button *m_pCancelButton;
    vgui::Button *m_pFolderUpButton;
    vgui::Button *m_pNewFolderButton;
    vgui::Button *m_pOpenInExplorerButton;
    vgui::ImagePanel *m_pFolderIcon;
    vgui::Label *m_pFileTypeLabel;

    KeyValues *m_pContextKeyValues;

    char m_szLastPath[1024];
    unsigned short m_nStartDirContext;
    FileOpenDialogType_t m_DialogType;
    bool m_bFileSelected : 1;

    VPANEL m_SaveModal;
    vgui::DHANDLE<vgui::InputDialog> m_hInputDialog;
};

}  // namespace vgui

#endif  // FILEOPENDIALOG_H