Cpp changes, minor refactor plus separate signal logic, typo.

- typo in searchindex
- Cpp plugin changed to use enum lidstate
- minor refactor
- Using signals instead of direct property access.
- Using states instead
- checking lidclosed instead of preparetosleep

Plugins/ZShell/lidwatcher.cpp

@@ -1,6 +1,8 @@
 #include "lidwatcher.hpp"
 
 #include <QtDBus/QDBusConnection>
+#include <QtDBus/QDBusMessage>
+#include <QtDBus/QDBusReply>
 #include <QLoggingCategory>
 
 Q_LOGGING_CATEGORY(lcLidWatcher, "ZShell.lidwatcher", QtInfoMsg)
@@ -10,11 +12,12 @@ namespace ZShell {
 static constexpr auto kLogin1Service = "org.freedesktop.login1";
 static constexpr auto kLogin1Path = "/org/freedesktop/login1";
 static constexpr auto kLogin1Interface = "org.freedesktop.login1.Manager";
-static constexpr auto kPrepareForSleep = "PrepareForSleep";
+static constexpr auto kDBusPropertiesInterface = "org.freedesktop.DBus.Properties";
 
 LidWatcher::LidWatcher(QObject* parent)
 	: QObject(parent)
-	, m_available(false) {
+	, m_available(false)
+	, m_state(Opened) {
 	QDBusConnection bus = QDBusConnection::systemBus();
 	m_available = bus.isConnected();
 
@@ -24,26 +27,48 @@ LidWatcher::LidWatcher(QObject* parent)
 		return;
 	}
 
-	const auto ok = bus.connect(kLogin1Service, kLogin1Path, kLogin1Interface, kPrepareForSleep, this,
-	                            SLOT(onPrepareForSleep(bool)));
+	const auto ok = bus.connect(kLogin1Service, kLogin1Path, kDBusPropertiesInterface, "PropertiesChanged",
+	                            this, SLOT(onPropertiesChanged(QString,QVariantMap,QStringList)));
 
 	m_available = ok;
 	emit availableChanged();
 	if (!m_available) {
-		qCWarning(lcLidWatcher) << "login1 lid signal unavailable";
+		qCWarning(lcLidWatcher) << "login1 properties signal unavailable";
+		return;
 	}
+
+	queryInitialState();
 }
 
 bool LidWatcher::available() const {
 	return m_available;
 }
 
-void LidWatcher::onPrepareForSleep(bool goingDown) {
-	if (goingDown) {
-		emit lidClosing();
-	} else {
-		emit lidOpened();
+LidWatcher::LidState LidWatcher::state() const {
+	return m_state;
+}
+
+void LidWatcher::queryInitialState() {
+	const auto msg = QDBusMessage::createMethodCall(
+		kLogin1Service, kLogin1Path,
+		kDBusPropertiesInterface, "Get");
+	msg << kLogin1Interface << "LidClosed";
+	const QDBusReply<QVariant> reply = QDBusConnection::systemBus().call(msg);
+	if (!reply.isValid()) {
+		qCWarning(lcLidWatcher) << "cannot query LidClosed:" << reply.error().message();
+		return;
 	}
+	m_state = reply.value().toBool() ? Closed : Opened;
+	emit stateChanged();
+}
+
+void LidWatcher::onPropertiesChanged(const QString& interface, const QVariantMap& changed, const QStringList& /*invalidated*/) {
+	if (interface != kLogin1Interface)
+		return;
+	if (!changed.contains("LidClosed"))
+		return;
+	m_state = changed.value("LidClosed").toBool() ? Closed : Opened;
+	emit stateChanged();
 }
 
 } // namespace ZShell