using Adw;
using Gtk;

public class MessageListView : Adw.Bin
{
    private Adw.ToolbarView container;

    private MessageDrawingArea message_drawing_area = new MessageDrawingArea();
    private ScrolledWindow scrolled_window = new ScrolledWindow();

    public MessageListView(MessageListModel model) {
        container = new Adw.ToolbarView();
        set_child(container);

        scrolled_window.set_child(message_drawing_area);
        scrolled_window.add_css_class("message-list-scroller");
        container.set_content(scrolled_window);

        var header_bar = new Adw.HeaderBar();
        header_bar.set_title_widget(new Label("Messages"));
        container.add_top_bar(header_bar);
    }
}


private class MessageDrawingArea : Widget {
    public MessageDrawingArea() {
    }

    public override SizeRequestMode get_request_mode() {
        return SizeRequestMode.HEIGHT_FOR_WIDTH;
    }
    
    public override void measure(Orientation orientation, int for_size, out int minimum, out int natural, out int minimum_baseline, out int natural_baseline) {
        GLib.message("Measure orientation: %s, for_size: %d", orientation.to_string(), for_size);

        if (orientation == Orientation.HORIZONTAL) {
            // Horizontal, so we take up the full width provided
            minimum = 0;
            natural = for_size;
        } else {
            GLib.message("Vertical measure for width: %d", for_size);
            minimum = 1500;
            natural = 1500;
        }
        
        minimum_baseline = -1;
        natural_baseline = -1;
    }
    
    public override void snapshot(Snapshot snapshot) {
        var width = get_width();
        var height = get_height();

        GLib.message("Snapshot width: %d, height: %d", width, height);

        var rect = Graphene.Rect().init(0, 0, width, height);
        snapshot.append_color({1.0f, 0.0f, 0.0f, 1.0f}, rect);

        // Create a text layout
        var layout = create_pango_layout("Hello World!");
        layout.set_width(width * Pango.SCALE);
        
        // Set text attributes
        var font_desc = Pango.FontDescription.from_string("Sans 14");
        layout.set_font_description(font_desc);

        // Draw the text in white
        snapshot.append_layout(layout, Gdk.RGBA() { red = 1.0f, green = 1.0f, blue = 1.0f, alpha = 1.0f });
    }
}