feat: basic QtShell and ShellComponent types

src/cpp/shell.cpp

@@ -0,0 +1,96 @@
+#include "shell.hpp"
+#include <utility>
+
+#include <qfileinfo.h>
+#include <qlogging.h>
+#include <qobject.h>
+#include <qobjectdefs.h>
+#include <qqmlcomponent.h>
+#include <qqmlcontext.h>
+#include <qqmlengine.h>
+#include <qqmllist.h>
+#include <qtmetamacros.h>
+
+QString CONFIG_PATH; // NOLINT
+
+QtShell::QtShell(): QObject(nullptr), path(CONFIG_PATH), dir(QFileInfo(this->path).dir()) {
+	CONFIG_PATH = "";
+}
+
+void QtShell::componentComplete() {
+	if (this->path.isEmpty()) {
+		qWarning() << "Multiple QtShell objects were created. You should not do this.";
+		return;
+	}
+
+	for (auto* component: this->mComponents) {
+		component->prepare(this->dir);
+	}
+}
+
+QQmlListProperty<ShellComponent> QtShell::components() {
+	return QQmlListProperty<ShellComponent>(
+	    this,
+	    nullptr,
+	    &QtShell::appendComponent,
+	    nullptr,
+	    nullptr,
+	    nullptr,
+	    nullptr,
+	    nullptr
+	);
+}
+
+void QtShell::appendComponent(QQmlListProperty<ShellComponent>* list, ShellComponent* component) {
+	auto* shell = qobject_cast<QtShell*>(list->object);
+
+	if (shell != nullptr) shell->mComponents.append(component);
+}
+
+void ShellComponent::setSource(QString source) {
+	if (this->mComponent != nullptr) {
+		qWarning() << "cannot define ShellComponent.source while defining a component";
+		return;
+	}
+
+	this->mSource = std::move(source);
+}
+
+void ShellComponent::setComponent(QQmlComponent* component) {
+	if (this->mSource != nullptr) {
+		qWarning() << "cannot define a component for ShellComponent while source is set";
+		return;
+	}
+
+	this->mComponent = component;
+}
+
+void ShellComponent::prepare(const QDir& basePath) {
+	if (this->mComponent == nullptr) {
+		if (this->mSource == nullptr) {
+			qWarning() << "neither source or a component was set for ShellComponent on prepare";
+			return;
+		}
+
+		auto path = basePath.filePath(this->mSource);
+		qDebug() << "preparing ShellComponent from" << path;
+
+		auto* context = QQmlEngine::contextForObject(this);
+		if (context == nullptr) {
+			qWarning() << "ShellComponent was created without an associated QQmlEngine, cannot prepare";
+			return;
+		}
+
+		auto* engine = context->engine();
+
+		this->mComponent = new QQmlComponent(engine, path, this);
+
+		if (this->mComponent == nullptr) {
+			qWarning() << "could not load ShellComponent source" << path;
+			return;
+		}
+	}
+
+	qDebug() << "Sending ready for ShellComponent";
+	emit this->ready();
+}