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//
// lager - library for functional interactive c++ programs
// Copyright (C) 2017 Juan Pedro Bolivar Puente
//
// This file is part of lager.
//
// lager is free software: you can redistribute it and/or modify
// it under the terms of the MIT License, as detailed in the LICENSE
// file located at the root of this source code distribution,
// or here: <https://github.com/arximboldi/lager/blob/master/LICENSE>
//
#include "../model.hpp"
#include <lager/cursor.hpp>
#include <lager/extra/qt.hpp>
#include <lager/state.hpp>
#include <QApplication>
#include <QFileInfo>
#include <QMessageBox>
#include <QObject>
#include <QQmlApplicationEngine>
#include <QQuickStyle>
#include <iostream>
class Item : public QObject
{
Q_OBJECT
public:
Item(lager::cursor<todo::item> data)
: LAGER_QT(done){data[&todo::item::done]}
, LAGER_QT(text){data[&todo::item::text].xform(
zug::map([](auto&& x) { return QString::fromStdString(x); }),
zug::map([](auto&& x) { return x.toStdString(); }))}
{}
LAGER_QT_CURSOR(bool, done);
LAGER_QT_CURSOR(QString, text);
};
class Model : public QObject
{
Q_OBJECT
lager::state<todo::model, lager::automatic_tag> state_;
lager::state<QString, lager::automatic_tag> file_name_;
public:
LAGER_QT_READER(QString, fileName);
LAGER_QT_READER(QString, name);
LAGER_QT_READER(int, count);
Model()
: LAGER_QT(fileName){file_name_}
, LAGER_QT(name){file_name_.map(
[](auto f) { return QFileInfo{f}.baseName(); })}
, LAGER_QT(count){state_.xform(zug::map(
[](auto&& x) { return static_cast<int>(x.todos.size()); }))}
{}
Q_INVOKABLE Item* todo(int index)
{
return new Item{
state_[&todo::model::todos][index][lager::lenses::or_default]};
}
Q_INVOKABLE void add(QString text)
{
if (!text.isEmpty()) {
state_.update([&](auto x) {
x.todos = x.todos.push_front({false, text.toStdString()});
return x;
});
}
}
Q_INVOKABLE void remove(int index)
{
state_.update([&](auto x) {
x.todos = x.todos.erase(index);
return x;
});
}
Q_INVOKABLE bool save(QString fname)
{
try {
auto fpath = QUrl{fname}.toLocalFile();
if (QFileInfo{fname}.suffix() != "todo")
fpath += ".todo";
todo::save(fpath.toStdString(), *state_);
file_name_.set(fname);
return true;
} catch (std::exception const& err) {
std::cerr << "Exception thrown: " << err.what() << std::endl;
return false;
}
}
Q_INVOKABLE bool load(QString fname)
{
try {
auto model = todo::load(QUrl{fname}.toLocalFile().toStdString());
state_.set(model);
file_name_.set(fname);
return true;
} catch (std::exception const& err) {
std::cerr << "Exception thrown: " << err.what() << std::endl;
return false;
}
}
};
#include "main.moc"
int main(int argc, char** argv)
{
QApplication app{argc, argv};
QQmlApplicationEngine engine;
qmlRegisterType<Model>("Lager.Example.Todo", 1, 0, "Model");
qmlRegisterUncreatableType<Item>("Lager.Example.Todo", 1, 0, "Item", "");
QQuickStyle::setStyle("Material");
engine.load(LAGER_TODO_QML_DIR "/main.qml");
return app.exec();
}
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