using MetroGauges.Controls.DrawTools;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
using System.Windows.Media;

namespace MetroGauges.Controls
{
    public class TextTool : DrawToolBase
    {
        TextBox textBox;
        
        System.Timers.Timer timer = new System.Timers.Timer();
        public TextTool(DesignControl canvas) : base(canvas)
        {
            IsStartDraw = true;
        }

        public override void MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            if (IsStartDraw)
            {
                Point mousePosition = Mouse.GetPosition(this.DrawDesign.canvasDesign);

                if (!this.DrawDesign.canvasDesign.Children.Contains(textBox))
                {
                    textBox = new TextBox();
                    textBox.Foreground= new SolidColorBrush(Colors.White);
                    textBox.KeyDown += TextBox_KeyDown;
                    this.DrawDesign.canvasDesign.Children.Add(textBox);
                    timer.Elapsed += Timer_Elapsed;
                }

                //添加文本到画布
                if(!string.IsNullOrWhiteSpace(textBox.Text))
                {
                    Point point = (Point)textBox.DataContext;
                    TextBlock textBlock = new TextBlock();
                    textBlock.Text = textBox.Text;
                    textBlock.Foreground = new SolidColorBrush(Colors.White);
                    Canvas.SetLeft(textBlock, point.X+2);
                    Canvas.SetTop(textBlock, point.Y+6);

                    textBlock.DataContext = point;
                    this.AddShap(textBlock);
                    textBox.Text = "";

                }
                timer.Interval = 300;
                timer.Start();
                Canvas.SetLeft(textBox, mousePosition.X);
                Canvas.SetTop(textBox, mousePosition.Y);
                textBox.DataContext = new Point() { X = mousePosition.X, Y = mousePosition.Y };

                if (e == null)
                {
                    MouseRightButtonUp(sender, e);
                }
            }
        }

        private void TextBox_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.Key == Key.Enter)
            {
                MouseLeftButtonDown(sender, null);
            }
        }

        

        public override void Highlight(FrameworkElement shape)
        {
            this.DrawDesign.CrrentDrawTool = this;
            base.Highlight(shape);
        }

        private void Timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
        {
            this.DrawDesign.Dispatcher.Invoke(new Action(() => { textBox.Focus(); }));
            timer.Stop();
        }

        public override void MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
        {
            
        }

        public override void MouseMove(object sender, MouseEventArgs e)
        {
            
        }

        public override void MouseRightButtonUp(object sender, MouseButtonEventArgs e)
        {
            IsStartDraw = false;
            this.DrawDesign.canvasDesign.Children.Remove(textBox);

            //textBox.Focus();
        }

        public override void m_Root_MouseRightButtonDown(object sender, MouseButtonEventArgs e)
        {
            
        }

        public override void Deactivated()
        {
            IsStartDraw = false;
            this.DrawDesign.canvasDesign.Children.Remove(textBox);
        }
    }
}