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// *****************************************************************************
// * This file is part of the FreeFileSync project. It is distributed under *
// * GNU General Public License: https://www.gnu.org/licenses/gpl-3.0 *
// * Copyright (C) Zenju (zenju AT freefilesync DOT org) - All Rights Reserved *
// *****************************************************************************
#ifndef CHOICE_ENUM_H_132413545345687
#define CHOICE_ENUM_H_132413545345687
#include <unordered_map>
#include <vector>
#include <wx/choice.h>
//handle mapping of enum values to wxChoice controls
/*
Example:
Member variable:
zen::EnumDescrList<EnumOnError> enumDescrMap;
Constructor code:
enumDescrMap.
add(ON_ERROR_POPUP, "Show pop-up", "Show pop-up on errors or warnings"). <- add localization
add(ON_ERROR_IGNORE, "Ignore errors", "Hide all error and warning messages").
add(ON_ERROR_EXIT, "Exit instantly", "Abort synchronization immediately");
Set enum value:
setEnumVal(enumDescrMap, *m_choiceHandleError, value);
Get enum value:
value = getEnumVal(enumDescrMap, *m_choiceHandleError)
Update enum tooltips (after user changed selection):
updateTooltipEnumVal(enumDescrMap, *m_choiceHandleError);
*/
namespace zen
{
template <class Enum>
struct EnumDescrList
{
EnumDescrList& add(Enum value, const wxString& text, const wxString& tooltip = {})
{
descrList.push_back({value, {text, tooltip}});
return *this;
}
using DescrList = std::vector<std::pair<Enum, std::pair<wxString, wxString>>>;
DescrList descrList;
std::unordered_map<const wxChoice*, std::vector<wxString>> itemsSetLast;
};
template <class Enum> void setEnumVal(const EnumDescrList<Enum>& mapping, wxChoice& ctrl, Enum value);
template <class Enum> Enum getEnumVal(const EnumDescrList<Enum>& mapping, const wxChoice& ctrl);
template <class Enum> void updateTooltipEnumVal(const EnumDescrList<Enum>& mapping, wxChoice& ctrl);
//--------------- impelementation -------------------------------------------
template <class Enum>
void setEnumVal(EnumDescrList<Enum>& mapping, wxChoice& ctrl, Enum value)
{
auto& itemsSetLast = mapping.itemsSetLast[&ctrl];
std::vector<wxString> items;
for (auto it = mapping.descrList.begin(); it != mapping.descrList.end(); ++it)
items.push_back(it->second.first);
if (items != itemsSetLast)
{
ctrl.Set(items); //expensive as fuck! => only call when absolutely needed!
itemsSetLast = std::move(items);
}
//-----------------------------------------------------------------
const auto it = std::find_if(mapping.descrList.begin(), mapping.descrList.end(), [&](const auto& mapItem) { return mapItem.first == value; });
if (it != mapping.descrList.end())
{
if (const wxString& tooltip = it->second.second;
!tooltip.empty())
ctrl.SetToolTip(tooltip);
else
ctrl.UnsetToolTip();
const int selectedPos = it - mapping.descrList.begin();
ctrl.SetSelection(selectedPos);
}
else assert(false);
}
template <class Enum>
Enum getEnumVal(const EnumDescrList<Enum>& mapping, const wxChoice& ctrl)
{
const int selectedPos = ctrl.GetSelection();
if (0 <= selectedPos && selectedPos < std::ssize(mapping.descrList))
return mapping.descrList[selectedPos].first;
else
{
assert(false);
return Enum(0);
}
}
template <class Enum> void updateTooltipEnumVal(const EnumDescrList<Enum>& mapping, wxChoice& ctrl)
{
const int selectedPos = ctrl.GetSelection();
if (0 <= selectedPos && selectedPos < std::ssize(mapping.descrList))
{
if (const auto& [text, tooltip] = mapping.descrList[selectedPos].second;
!tooltip.empty())
ctrl.SetToolTip(tooltip);
else
ctrl.UnsetToolTip();
}
else assert(false);
}
}
#endif //CHOICE_ENUM_H_132413545345687
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