UITest.cs

// Reference: Oxide.Ext.RustUI
using System.IO;
using RustUI;
using RustUI.UIComponents;
using UnityEngine;
using UnityEngine.UI;

namespace Oxide.Plugins
{
    [Info("UITest", "DefaultPlayer", "1.0")]
    class UITest : RustPlugin
    {
        private readonly Color grey = new Color(0.5f, 0.5f, 0.5f, 0.5f);
        private int clicks;
        private BaseUIComponent UI;

        [ChatCommand("cui")]
        private void OnCUICmd(BasePlayer player, string command, string[] args)
        {
            if (!player.IsAdmin())
                return;
            CommunityEntity.ServerInstance.ClientRPCEx(new Network.SendInfo() { connection = player.net.connection }, null, "DestroyUI", UI.name);

        }

        [ChatCommand("ui")]
        private void OnUICmd(BasePlayer player, string command, string[] args)
        {
            if (!player.IsAdmin())
                return;
            ShowUI(player);
        }
        private void ShowUI(BasePlayer player)
        {
            var comp = UI.FindComponent<UIText>("Counter");
            comp.text = $"You clicked {clicks} times.";
            CommunityEntity.ServerInstance.ClientRPCEx(new Network.SendInfo() { connection = player.net.connection }, null, "AddUI", UI.GetCompressedJSON());
        }

        [ConsoleCommand("click")]
        private void cmdClick(ConsoleSystem.Arg arg)
        {
            clicks++;
            ShowUI(arg.Player());
        }

        private void Loaded()
        {
            var MainUI = BaseUIComponent.Create("Overlay", "Dialog");
            MainUI.AddComponent(new UIImage(grey, Image.Type.Simple))
                .AddComponent(new UIRectTransform(new Vector2(0.297f, 0.2463031f), new Vector2(.7f, .7f)))
                .AddComponent(new UINeedsCursor())

                // Header
                .AddNestedComponent(BaseUIComponent.Inherit(MainUI))
                .AddComponent(new UIText("Clicker", 26, Color.white, TextAnchor.MiddleCenter))
                .AddComponent(new UIRectTransform(new Vector2(0f, 0.8201072f), Vector2.one))

                // Counter
                .GetOwner().AddNestedComponent(BaseUIComponent.Inherit(MainUI))
                .AddComponent(new UIText("", 14, Color.yellow, TextAnchor.MiddleCenter).SetName("Counter"))
                .AddComponent(new UIRectTransform(new Vector2(0,.5f), new Vector2(1f, .9f)))
                
                // Button
                .GetOwner().AddNestedComponent(BaseUIComponent.Inherit(MainUI, "TheButton"))
                .AddComponent(new UIButton("global.click","Dialog",Color.yellow, Image.Type.Tiled))
                .AddComponent(new UIRectTransform(new Vector2(0.0f,0.0f),new Vector2(1f,0.30f)))
                .GetOwner().AddNestedComponent(BaseUIComponent.Create("TheButton")).AddComponent(new UIText("CLICK ME", 20, Color.white, TextAnchor.MiddleCenter));

                // Close Button
            MainUI.AddNestedComponent(BaseUIComponent.Inherit(MainUI, "CloseBtn")).AddComponent(new UIButton(null, "Dialog", Color.red, Image.Type.Tiled))
                .AddComponent(new UIRectTransform(new Vector2(0.95f, 0.95f), Vector2.one))
                .GetOwner().AddNestedComponent(BaseUIComponent.Create("CloseBtn")).AddComponent(new UIText("[X]", 14, Color.white, TextAnchor.MiddleCenter));

            File.WriteAllText(@"C:\debugui.txt", MainUI.ToString());
            UI = MainUI;
        }
    }
}