using System;

using System.Collections.Generic;

using System.Linq;

using System.Net;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Documents;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Animation;

using System.Windows.Shapes;

using System.Threading;

using Iri.Modernisation.BaseMVVM.Commands;

using Iri.Modernisation.Controls.Converter;

using Iri.Modernisation.Data.Models;

namespace Iri.Modernisation.Controls.View

{

    public partial class ContextualBinderLayer : UserControl

    {

        private ContextualLinkBinder _movingBinder;

        private Line _linkLine;

        private bool _active = false;

        private System.Windows.Threading.DispatcherTimer myDispatcherTimer;

        private Point _menuAnnotationPoint;

        public ContextualBinderLayer()

        {

            InitializeComponent();

            Commands.PolemicElement.ElementSelected.Executed += new EventHandler<SLExtensions.Input.ExecutedEventArgs>(ElementSelected_Executed);

            Commands.ContextualBinderLayer.EndBind.Executed += new EventHandler<SLExtensions.Input.ExecutedEventArgs>(EndBind_Executed);

            MouseLeftButtonUp += new MouseButtonEventHandler(ContextualBinderLayer_MouseLeftButtonUp);

            MouseMove += new MouseEventHandler(ContextualBinderLayer_MouseMove);

            Commands.ContextualBinderLayer.BeginBind.Executed += new EventHandler<SLExtensions.Input.ExecutedEventArgs>(BeginBind_Executed);  

            myDispatcherTimer = new System.Windows.Threading.DispatcherTimer();

            myDispatcherTimer.Interval = new TimeSpan(0, 0, 0, 0, 0);

            myDispatcherTimer.Tick +=new EventHandler(myDispatcherTimer_Tick);

        }

        void ElementSelected_Executed(object sender, SLExtensions.Input.ExecutedEventArgs e)

        {

            _menuAnnotationPoint = ((MouseButtonEventArgs)e.Parameter).GetPosition(Application.Current.RootVisual);

        }

        void  myDispatcherTimer_Tick(object sender, EventArgs e)

        {

                    LayoutRoot.Background.Opacity = 0.0;

                    _movingBinder.Visibility = Visibility.Visible;

                    _linkLine.Visibility = Visibility.Visible;

        }

        void EndBind_Executed(object sender, SLExtensions.Input.ExecutedEventArgs e)

        {

            if (_active)

            {

                FlushDisplay();

            }

        }

        void ContextualBinderLayer_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)

        {

            FlushDisplay();

        }

        private void FlushDisplay()

        {

            LayoutRoot.Children.Clear();

            _movingBinder.ReleaseMouseCapture();

            LayoutRoot.Background = null;

            _active = false;

            myDispatcherTimer.Stop();

            Commands.ContextualBinderLayer.DesactiveBind.Execute();

        }

        void ContextualBinderLayer_MouseMove(object sender, MouseEventArgs e)

        { 

            LayoutRoot.Background = null;

            _movingBinder.Visibility = Visibility.Collapsed;

            _linkLine.Visibility = Visibility.Collapsed;

            LayoutRoot.UpdateLayout();

            _movingBinder.Margin = new Thickness(

                                       e.GetPosition(this).X - _movingBinder.Width/2,

                                       e.GetPosition(this).Y - _movingBinder.Height / 2,

                                        0,

                                        0);

            _linkLine.X2 = e.GetPosition(this).X ;

            _linkLine.Y2 = e.GetPosition(this).Y;

        }

        void BeginBind_Executed(object sender, SLExtensions.Input.ExecutedEventArgs e)

        {

            Point temp;

            if(e.Source ==null)

            {

               temp = _menuAnnotationPoint;

            }

            else

            {

                temp  =  ((MouseButtonEventArgs)e.Source).GetPosition(Application.Current.RootVisual);

            }

            LayoutRoot.Children.Clear();

            _movingBinder =new ContextualLinkBinder( ((ContextualLinkBinder)e.Parameter));  

            _movingBinder.Margin = new Thickness(

             temp.X - _movingBinder.Width/ 2,

             temp.Y - _movingBinder.Height / 2,

              _movingBinder.Margin.Right,

               _movingBinder.Margin.Bottom);

            _linkLine = new Line()

            {

                X1 = temp.X,

                Y1 = temp.Y,

                X2 = temp.X,

                Y2 = temp.Y,

                StrokeThickness = 2

            };

            LayoutRoot.Background.Opacity = 0.0;

            LayoutRoot.Children.Add(_movingBinder);

            LayoutRoot.Children.Add(_linkLine);

            _active = true;

            Commands.ContextualBinderLayer.ActiveBind.Execute();

            myDispatcherTimer.Start();  

        }

    }

}