HackStudio: Add GML Preview action tab

This allows us to show a GML Preview in realtime via
HackStudio::GMLPreviewWidget! :^)

1 files changed, 40 insertions, 0 deletions

diff --git a/Userland/DevTools/HackStudio/GMLPreviewWidget.cpp b/Userland/DevTools/HackStudio/GMLPreviewWidget.cpp
new file mode 100644
index 0000000000..e2f07af251
--- /dev/null
+++ b/Userland/DevTools/HackStudio/GMLPreviewWidget.cpp
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2021, Conor Byrne <cbyrneee@protonmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include "GMLPreviewWidget.h"
+#include <LibGUI/BoxLayout.h>
+#include <LibGUI/Label.h>
+
+namespace HackStudio {
+
+GMLPreviewWidget::GMLPreviewWidget(String const& gml_content)
+{
+    set_layout<GUI::VerticalBoxLayout>();
+    load_gml(gml_content);
+}
+
+void GMLPreviewWidget::load_gml(String const& gml)
+{
+    remove_all_children();
+
+    if (gml.is_empty()) {
+        auto& label = add<GUI::Label>();
+        label.set_text("Open a .gml file to show the preview");
+
+        return;
+    }
+
+    load_from_gml(gml, [](const String& name) -> RefPtr<Core::Object> {
+        return GUI::Label::construct(String::formatted("{} is not registered as a GML element!", name));
+    });
+
+    if (children().is_empty()) {
+        auto& label = add<GUI::Label>();
+        label.set_text("Failed to load GML!");
+    }
+}
+
+}