92 lines
3.4 KiB
C++
92 lines
3.4 KiB
C++
#ifndef SAVABLE_H
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#define SAVABLE_H
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#include "json.hpp"
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#include "Util/qpointervariant.h"
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#include <QVariant>
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#include <QDebug>
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#include <QColor>
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#include <array>
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#include <exception>
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class Savable {
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public:
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virtual nlohmann::json toJSON() = 0;
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virtual void fromJSON(nlohmann::json j) = 0;
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bool openFromFileDialog(QString title, QString filetype);
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bool saveToFileDialog(QString title, QString filetype, QString ending = "");
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using SettingDescription = struct {
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QPointerVariant var;
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QString name;
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QVariant def;
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};
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static void parseJSON(nlohmann::json j, std::vector<SettingDescription> descr) {
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for(auto e : descr) {
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auto list = e.name.split(".");
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auto *json_entry = &j;
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bool entry_exists = true;
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while(list.size() > 0) {
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auto key = list.takeFirst().toStdString();
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if((*json_entry).contains(key)) {
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json_entry = &(*json_entry)[key];
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} else {
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entry_exists = false;
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break;
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}
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}
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if(!entry_exists) {
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// missing entry in json file, nothing to do (default values already set in constructor)
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qWarning() << "Entry" << e.name << "not present in file";
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continue;
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}
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// json library does not now about QVariant, handle used cases
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auto val = e.var.value();
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switch(static_cast<QMetaType::Type>(val.type())) {
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case QMetaType::Double: e.var.setValue((*json_entry).get<double>()); break;
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case QMetaType::Int: e.var.setValue((*json_entry).get<int>()); break;
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case QMetaType::Bool: e.var.setValue((*json_entry).get<bool>()); break;
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case QMetaType::QString: {
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auto s = QString::fromStdString((*json_entry).get<std::string>());
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e.var.setValue(s);
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}
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break;
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case QMetaType::QColor: {
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auto s = QString::fromStdString((*json_entry).get<std::string>());
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e.var.setValue(QColor(s));
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}
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break;
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default:
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throw std::runtime_error("Unimplemented metatype:"+std::string(val.typeName()));
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}
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}
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}
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static nlohmann::json createJSON(std::vector<SettingDescription> descr) {
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nlohmann::json j;
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for(auto e : descr) {
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auto list = e.name.split(".");
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auto *json_entry = &j;
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while(list.size() > 0) {
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json_entry = &(*json_entry)[list.takeFirst().toStdString()];
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}
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// json library does not now about QVariant, handle used cases
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auto val = e.var.value();
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switch(static_cast<QMetaType::Type>(val.type())) {
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case QMetaType::Double: *json_entry = val.toDouble(); break;
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case QMetaType::Int: *json_entry = val.toInt(); break;
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case QMetaType::Bool: *json_entry = val.toBool(); break;
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case QMetaType::QString: *json_entry = val.toString().toStdString(); break;
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case QMetaType::QColor: *json_entry = val.value<QColor>().name().toStdString(); break;
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default:
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throw std::runtime_error("Unimplemented metatype:"+std::string(val.typeName()));
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}
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}
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return j;
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}
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};
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#endif // SAVABLE_H
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