config moved to c++ plugin, removed old qml + fileview implementation

Plugins/ZShell/Config/Config.cpp

@@ -0,0 +1,137 @@
+#include "Config.hpp"
+
+#include <QFile>
+#include <QSaveFile>
+#include <QJsonDocument>
+#include <QStandardPaths>
+#include <QDir>
+#include <QDebug>
+#include <QFutureWatcher>
+
+Config::Config(QObject* parent) : ConfigSection(parent) {
+	m_appearance = new Appearance(this);
+	m_background = new Background(this);
+	m_bar = new Bar(this);
+	m_clipboard = new Clipboard(this);
+	m_colors = new Colors(this);
+	m_dashboard = new Dashboard(this);
+	m_dock = new Dock(this);
+	m_general = new General(this);
+	m_launcher = new Launcher(this);
+	m_lock = new Lock(this);
+	m_notifs = new Notifs(this);
+	m_osd = new Osd(this);
+	m_overview = new Overview(this);
+	m_screenshot = new Screenshot(this);
+	m_services = new Services(this);
+	m_sidebar = new Sidebar(this);
+	m_utilities = new Utilities(this);
+	wireSignals(); // forwards every child's changed() up to our own changed()
+
+	connect(this, &ConfigSection::changed, this, &Config::scheduleSave);
+
+	m_saveTimer.setSingleShot(true);
+	m_saveTimer.setInterval(
+		300); // debounce: coalesce rapid-fire edits (e.g. dragging a slider)
+	connect(&m_saveTimer, &QTimer::timeout, this, &Config::flushAsync);
+
+	loadSync();
+	m_firstLoadDone = true;
+}
+
+Config* Config::create(QQmlEngine*, QJSEngine*) {
+	// The QML engine takes ownership of singletons created this way.
+	return new Config();
+}
+
+QString Config::filePath() const {
+	const QString dir =
+		QStandardPaths::writableLocation(QStandardPaths::ConfigLocation) +
+		QStringLiteral("/zshell");
+	QDir().mkpath(dir);
+	return dir + QStringLiteral("/config.json");
+}
+
+void Config::loadSync() {
+	m_loading =
+		true; // suppress scheduleSave() while properties are set from disk
+	QFile f(filePath());
+	if (f.open(QIODevice::ReadOnly)) {
+		const auto doc = QJsonDocument::fromJson(f.readAll());
+		if (doc.isObject()) fromJson(doc.object());
+	} else {
+		qInfo() << "Config: no existing config at" << filePath()
+				<< "- using defaults";
+	}
+	m_loading = false;
+}
+
+void Config::loadAsync() {
+	m_loading = true;
+	auto future = QtConcurrent::run([this]() {
+		QFile f(filePath());
+		if (f.open(QIODevice::ReadOnly)) {
+			const auto doc = QJsonDocument::fromJson(f.readAll());
+			if (doc.isObject()) {
+				QMetaObject::invokeMethod(this, [this, doc]() {
+					fromJson(doc.object());
+					m_loading = false;
+				}, Qt::QueuedConnection);
+			} else {
+				QMetaObject::invokeMethod(this, [this]() {
+					m_loading = false;
+				}, Qt::QueuedConnection);
+			}
+		} else {
+			qInfo() << "Config: failed to reload from" << filePath()
+					<< "- using in-memory values";
+			QMetaObject::invokeMethod(this, [this]() {
+				m_loading = false;
+			}, Qt::QueuedConnection);
+		}
+	});
+	m_loadFuture = future;
+}
+
+void Config::load() {
+	if (!m_firstLoadDone) {
+		loadSync();
+	} else {
+		loadAsync();
+	}
+}
+
+void Config::reloadAsync() {
+	loadAsync();
+}
+
+void Config::scheduleSave() {
+	if (m_loading) return;
+	m_saveTimer.start(); // restarts the window if it's already running
+}
+
+void Config::flushAsync() {
+	auto future = QtConcurrent::run([this]() {
+		const QByteArray data = QJsonDocument(toJson()).toJson(QJsonDocument::Indented);
+		writeAtomically(data);
+	});
+}
+
+void Config::saveNow() {
+	m_saveTimer.stop();
+	flushAsync();
+}
+
+void Config::writeAtomically(const QByteArray& data) {
+	// QSaveFile writes to a temp file next to the target and atomically
+	// renames it into place on commit() - a crash or power loss mid-write
+	// can never leave config.json half-written.
+	QSaveFile f(filePath());
+	if (!f.open(QIODevice::WriteOnly)) {
+		qWarning() << "Config: failed to open for atomic write:"
+				   << f.errorString();
+		return;
+	}
+	f.write(data);
+	if (!f.commit()) qWarning() << "Config: commit failed:" << f.errorString();
+}