@using System;
@using Sandbox;
@using Sandbox.UI;
@inherits Panel
@namespace Sandbox

<style>
    InputAnalogHint
    {
        justify-content: center;
        align-items: center;
        
        gap: 32px;

        img
        {
            background-size: contain;
            background-repeat: no-repeat;
            max-height: 64px;
            max-width: 64px;
        }

        label{
            font-family: Arial;
            color: white;
            font-size: 24px;
            text-transform: uppercase;
        }
    }
</style>

<root>
    <img @ref=Glyph />
    <label>@( !string.IsNullOrEmpty( Text ) ? Text : Analog.ToString() )</label>
</root>

@code
{
    // @ref
    public Image Glyph { get; set; }
    public InputAnalog Analog { get; set; }
    public InputGlyphSize Size { get; set; } = InputGlyphSize.Medium;
    public string Text { get; set; }

    /// <summary>
    /// Checks the current button and updates the glyph.
    /// </summary>
    void UpdateTexture()
    {
        var texture = Input.GetGlyph(Analog, Size, true);
        if ( texture is null ) return;
        if ( !Glyph.IsValid() ) return;
        Glyph.Texture = texture;
    }

    protected override void OnAfterTreeRender( bool firstTime )
    {
        UpdateTexture();

        SetClass("keyboard", !Input.UsingController);
    }

    protected override int BuildHash()
    {
        // If we switch input device, rebuild the tree.
        return HashCode.Combine(Analog, Input.UsingController);
    }
}