core/reloader: trigger onPostReload if launched post-reload

This is similar to the check in Reloadable, and fixes a number of hard
to debug issues with Process, IpcHandler, NotificationServer, and
GlobalShortcut not working depending on where you put them in a QML file.

src/core/reload.cpp

@@ -126,12 +126,17 @@ QObject* Reloadable::getChildByReloadId(QObject* parent, const QString& reloadId
 	return nullptr;
 }
 
-void PostReloadHook::postReloadTree(QObject* root) {
-	for (auto* child: root->children()) {
-		PostReloadHook::postReloadTree(child);
-	}
-
-	if (auto* self = dynamic_cast<PostReloadHook*>(root)) {
-		self->onPostReload();
-	}
+void PostReloadHook::componentComplete() {
+	auto* engineGeneration = EngineGeneration::findObjectGeneration(this);
+	if (!engineGeneration || engineGeneration->reloadComplete) this->postReload();
+}
+
+void PostReloadHook::postReload() {
+	this->isPostReload = true;
+	this->onPostReload();
+}
+
+void PostReloadHook::postReloadTree(QObject* root) {
+	for (auto* child: root->children()) PostReloadHook::postReloadTree(child);
+	if (auto* self = dynamic_cast<PostReloadHook*>(root)) self->postReload();
 }

src/core/reload.hpp

@@ -119,16 +119,19 @@ private:
 };
 
 /// Hook that runs after the old widget tree is dropped during a reload.
-class PostReloadHook {
+class PostReloadHook
+    : public QObject
+    , public QQmlParserStatus {
 public:
-	PostReloadHook() = default;
-	virtual ~PostReloadHook() = default;
-	PostReloadHook(PostReloadHook&&) = default;
-	PostReloadHook(const PostReloadHook&) = default;
-	PostReloadHook& operator=(PostReloadHook&&) = default;
-	PostReloadHook& operator=(const PostReloadHook&) = default;
+	PostReloadHook(QObject* parent = nullptr): QObject(parent) {}
+	void classBegin() override {}
+	void componentComplete() override;
 
+	void postReload();
 	virtual void onPostReload() = 0;
 
 	static void postReloadTree(QObject* root);
+
+protected:
+	bool isPostReload = false;
 };

src/io/ipchandler.hpp

@@ -154,9 +154,7 @@ class IpcHandlerRegistry;
 /// #### Properties
 /// Properties of an IpcHanlder can be read using `qs ipc prop get` as long as they are
 /// of an IPC compatible type. See the table above for compatible types.
-class IpcHandler
-    : public QObject
-    , public PostReloadHook {
+class IpcHandler: public PostReloadHook {
 	Q_OBJECT;
 	/// If the handler should be able to receive calls. Defaults to true.
 	Q_PROPERTY(bool enabled READ enabled WRITE setEnabled NOTIFY enabledChanged);
@@ -166,7 +164,7 @@ class IpcHandler
 	QML_ELEMENT;
 
 public:
-	explicit IpcHandler(QObject* parent = nullptr): QObject(parent) {};
+	explicit IpcHandler(QObject* parent = nullptr): PostReloadHook(parent) {};
 	~IpcHandler() override;
 	Q_DISABLE_COPY_MOVE(IpcHandler);
 

src/io/process.cpp

@@ -15,10 +15,11 @@
 
 #include "../core/generation.hpp"
 #include "../core/qmlglobal.hpp"
+#include "../core/reload.hpp"
 #include "datastream.hpp"
 #include "processcore.hpp"
 
-Process::Process(QObject* parent): QObject(parent) {
+Process::Process(QObject* parent): PostReloadHook(parent) {
 	QObject::connect(
 	    QuickshellSettings::instance(),
 	    &QuickshellSettings::workingDirectoryChanged,
@@ -37,10 +38,7 @@ Process::~Process() {
 	}
 }
 
-void Process::onPostReload() {
-	this->postReload = true;
-	this->startProcessIfReady();
-}
+void Process::onPostReload() { this->startProcessIfReady(); }
 
 bool Process::isRunning() const { return this->process != nullptr; }
 
@@ -180,9 +178,10 @@ void Process::setStdinEnabled(bool enabled) {
 }
 
 void Process::startProcessIfReady() {
-	if (this->process != nullptr || !this->postReload || !this->targetRunning
+	if (this->process != nullptr || !this->isPostReload || !this->targetRunning
 	    || this->mCommand.isEmpty())
 		return;
+
 	this->targetRunning = false;
 
 	auto& cmd = this->mCommand.first();

src/io/process.hpp

@@ -31,9 +31,7 @@
 ///   }
 /// }
 /// ```
-class Process
-    : public QObject
-    , public PostReloadHook {
+class Process: public PostReloadHook {
 	Q_OBJECT;
 	// clang-format off
 	/// If the process is currently running. Defaults to false.
@@ -258,5 +256,4 @@ private:
 	bool targetRunning = false;
 	bool mStdinEnabled = false;
 	bool mClearEnvironment = false;
-	bool postReload = false;
 };

src/io/test/process.cpp

@@ -18,7 +18,7 @@ void TestProcess::startAfterReload() {
 	QVERIFY(!process.isRunning());
 	QCOMPARE(startedSpy.count(), 0);
 
-	process.onPostReload();
+	process.postReload();
 
 	QVERIFY(process.isRunning());
 	QVERIFY(startedSpy.wait(100));
@@ -29,7 +29,7 @@ void TestProcess::testExec() {
 	auto startedSpy = QSignalSpy(&process, &Process::started);
 	auto exitedSpy = QSignalSpy(&process, &Process::exited);
 
-	process.onPostReload();
+	process.postReload();
 
 	process.setCommand({"sleep", "30"});
 	process.setRunning(true);

src/services/notifications/qml.hpp

@@ -21,9 +21,7 @@ namespace qs::service::notifications {
 /// The server does not advertise most capabilities by default. See the individual properties for details.
 ///
 /// [Desktop Notifications Specification]: https://specifications.freedesktop.org/notification-spec/notification-spec-latest.html
-class NotificationServerQml
-    : public QObject
-    , public PostReloadHook {
+class NotificationServerQml: public PostReloadHook {
 	Q_OBJECT;
 	// clang-format off
 	/// If notifications should be re-emitted when quickshell reloads. Defaults to true.

src/wayland/hyprland/global_shortcuts/qml.hpp

@@ -32,9 +32,7 @@ namespace qs::hyprland::global_shortcuts {
 ///
 /// [hyprland_global_shortcuts_v1]: https://github.com/hyprwm/hyprland-protocols/blob/main/protocols/hyprland-global-shortcuts-v1.xml
 /// [the wiki]: https://wiki.hyprland.org/Configuring/Binds/#dbus-global-shortcuts
-class GlobalShortcut
-    : public QObject
-    , public PostReloadHook {
+class GlobalShortcut: public PostReloadHook {
 	using ShortcutImpl = impl::GlobalShortcut;
 
 	Q_OBJECT;
@@ -59,7 +57,7 @@ class GlobalShortcut
 	QML_ELEMENT;
 
 public:
-	explicit GlobalShortcut(QObject* parent = nullptr): QObject(parent) {}
+	explicit GlobalShortcut(QObject* parent = nullptr): PostReloadHook(parent) {}
 	~GlobalShortcut() override;
 	Q_DISABLE_COPY_MOVE(GlobalShortcut);