using CefSharp.Wpf;
using System.Windows;
using System;
using Microsoft.Xaml.Behaviors;

namespace CefSharp.MinimalExample.Wpf.Behaviours
{
    public class HoverLinkBehaviour : Behavior<ChromiumWebBrowser>
    {
        // Using a DependencyProperty as the backing store for HoverLink. This enables animation, styling, binding, etc...
        public static readonly DependencyProperty HoverLinkProperty = DependencyProperty.Register("HoverLink", typeof(string), typeof(HoverLinkBehaviour), new PropertyMetadata(string.Empty));

        public string HoverLink
        {
            get { return (string)GetValue(HoverLinkProperty); }
            set { SetValue(HoverLinkProperty, value); }
        }

        protected override void OnAttached()
        {
            AssociatedObject.StatusMessage += OnStatusMessageChanged;
        }

        protected override void OnDetaching()
        {
            AssociatedObject.StatusMessage -= OnStatusMessageChanged;
        }
        
        private void OnStatusMessageChanged(object sender, StatusMessageEventArgs e)
        {
            var chromiumWebBrowser = sender as ChromiumWebBrowser;
            chromiumWebBrowser.Dispatcher.BeginInvoke((Action)(() => HoverLink = e.Value));
        }
    }
}