From 5e26bb764308a87082c769eff65755ac2bcf23d9 Mon Sep 17 00:00:00 2001
From: Samuel Bowman <sam@sambowman.tech>
Date: Sat, 15 Oct 2022 13:15:03 -0400
Subject: [PATCH] GMLPlayground: Allow previewing GML in a separate window

Previously, Playground would always preview the rendered GML in a frame
next to the editor. This can be annoying when trying to work with small
or large widget hierarchies since the size of the preview is tied to the
size of the editor. Now there is a view menu which allows you to toggle
between the frame or a separate window which can be resized independent
of the editor.
---
 Userland/DevTools/GMLPlayground/main.cpp | 43 ++++++++++++++++++++++--
 1 file changed, 41 insertions(+), 2 deletions(-)

diff --git a/Userland/DevTools/GMLPlayground/main.cpp b/Userland/DevTools/GMLPlayground/main.cpp
index 9530a76c47..42a231baab 100644
--- a/Userland/DevTools/GMLPlayground/main.cpp
+++ b/Userland/DevTools/GMLPlayground/main.cpp
@@ -11,6 +11,7 @@
 #include <LibCore/File.h>
 #include <LibCore/System.h>
 #include <LibDesktop/Launcher.h>
+#include <LibGUI/ActionGroup.h>
 #include <LibGUI/Application.h>
 #include <LibGUI/FilePicker.h>
 #include <LibGUI/GML/AutocompleteProvider.h>
@@ -84,9 +85,15 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     window->resize(800, 600);
 
     auto splitter = TRY(window->try_set_main_widget<GUI::HorizontalSplitter>());
-
     auto editor = TRY(splitter->try_add<GUI::TextEditor>());
-    auto preview = TRY(splitter->try_add<GUI::Frame>());
+    auto preview_frame_widget = TRY(splitter->try_add<GUI::Frame>());
+
+    auto preview_window = TRY(GUI::Window::try_create());
+    preview_window->set_title("Preview - GML Playground");
+    preview_window->set_icon(app_icon.bitmap_for_size(16));
+    auto preview_window_widget = TRY(preview_window->try_set_main_widget<GUI::Widget>());
+
+    GUI::Widget* preview = preview_frame_widget;
 
     editor->set_syntax_highlighter(make<GUI::GML::SyntaxHighlighter>());
     editor->set_autocomplete_provider(make<GUI::GML::AutocompleteProvider>());
@@ -246,6 +253,38 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     vim_emulation_setting_action->set_checked(false);
     TRY(edit_menu->try_add_action(vim_emulation_setting_action));
 
+    auto view_menu = TRY(window->try_add_menu("&View"));
+    GUI::ActionGroup views_group;
+    views_group.set_exclusive(true);
+    views_group.set_unchecking_allowed(false);
+
+    auto view_frame_action = GUI::Action::create_checkable("&Frame", [&](auto&) {
+        dbgln("View switched to frame");
+        preview = preview_frame_widget;
+        editor->on_change();
+        preview_window->hide();
+        preview_frame_widget->set_preferred_width(splitter->width() / 2);
+        preview_frame_widget->set_visible(true);
+    });
+    view_menu->add_action(view_frame_action);
+    views_group.add_action(view_frame_action);
+    view_frame_action->set_checked(true);
+
+    auto view_window_action = GUI::Action::create_checkable("&Window", [&](auto&) {
+        dbgln("View switched to window");
+        preview = preview_window_widget;
+        editor->on_change();
+        preview_window->resize(400, 300);
+        preview_window->show();
+        preview_frame_widget->set_visible(false);
+    });
+    view_menu->add_action(view_window_action);
+    views_group.add_action(view_window_action);
+
+    preview_window->on_close = [&] {
+        view_frame_action->activate();
+    };
+
     auto help_menu = TRY(window->try_add_menu("&Help"));
     TRY(help_menu->try_add_action(GUI::CommonActions::make_help_action([](auto&) {
         Desktop::Launcher::open(URL::create_with_file_scheme("/usr/share/man/man1/GMLPlayground.md"), "/bin/Help");