using System;
using System.Collections.Generic;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using WPFProject.Controls;
using WPFProject.Models;
using WPFProject.UI.Test;
using WPFProject.Utils;

namespace WPFProject.UI
{
    /// <summary>
    /// WorkControl.xaml 的交互逻辑
    /// </summary>
    public partial class WorkControl : UserControl,IPlugin
    {
        public WorkControl()
        {
            InitializeComponent();
            Loaded += UserControl_Loaded;
        }

        private List<CanvasPosition> InitGridSize()
        {
            List<CanvasPosition> result = new List<CanvasPosition>();
            result.Add(new CanvasPosition
            {
                Left = 0,
                Top = 0,
                Width = 0.1 * ActualWidth -2,
                Height = 0.5 * ActualHeight - 2
            });
            result.Add(new CanvasPosition
            {
                Left = 0.1*ActualWidth +2,
                Top = 0,
                Width = 0.5* ActualWidth -4,
                Height = ActualHeight,
            });

            result.Add(new CanvasPosition
            {
                Left = 0.6*ActualWidth+2,
                Top = 0,
                Width = 0.4*ActualWidth-2,
                Height = 0.5 * ActualHeight - 2
            });

            result.Add(new CanvasPosition
            {
                Left = 0,
                Top = 0.5*ActualHeight+2,
                Width = 0.1 * ActualWidth - 2,
                Height = 0.5 * ActualHeight - 2
            });

            result.Add(new CanvasPosition
            {
                Left = 0.6 * ActualWidth + 2,
                Top = 0.5 * ActualHeight + 2,
                Width = 0.4 * ActualWidth - 2,
                Height = 0.5 * ActualHeight - 2
            });

            return result;
        }

        private void UserControl_Loaded(object sender, RoutedEventArgs e)
        {
            List<CanvasPosition> pos = InitGridSize();
            ProgramList programList = new ProgramList();
            InnerWindow p = new InnerWindow(pos[0])
            {
                Title = "程序列表",
                Content = programList
            };
            HandleInnerWindow(p);

            InnerWindow p1 = new InnerWindow(pos[1])
            {
                Title = "图片",
            };
            HandleInnerWindow(p1);

            SequnceList sequnceList = new SequnceList();
            programList.ProgramChanged += sequnceList.Selected_Program_Changed;

            InnerWindow p2 = new InnerWindow(pos[2])
            {
                Title = "序列",
                Content = sequnceList
            };
            HandleInnerWindow(p2);

            FunctionSetting functionSetting = new FunctionSetting();
            InnerWindow p3 = new InnerWindow(pos[3])
            {
                Title = "函数",
                Content = functionSetting
            };
            HandleInnerWindow(p3);

            StepSetting stepSetting = new StepSetting();
            InnerWindow p4 = new InnerWindow(pos[4])
            {
                Title = "单步设置",
                Content = stepSetting
            };
            HandleInnerWindow(p4);


            SizeChanged += WorkControl_SizeChanged;
            Loaded -= UserControl_Loaded;

        }

        public int CanvasChildrenCount { get; private set; } = 0;
        private void HandleInnerWindow(InnerWindow inner)
        {
            inner.MinEvent += InnerWindowMin;
            inner.MaxEvent += InnerWindowMax;
            inner.ZIndexEvent += Inner_ZIndexEvent;
            inner.GotFocus += Inner_GotFocus;
            inner.AttachToCanvas(WorkArea);
            inner.Zindex = CanvasChildrenCount++;
        }

        private void Inner_GotFocus(object sender, RoutedEventArgs e)
        {
            CanvasHelper.SetTopZIndex(sender as InnerWindow, WorkArea, typeof(InnerWindow));
        }

        private void Inner_ZIndexEvent(object sender, EventArgs e)
        {
            CanvasHelper.SetTopZIndex(sender as InnerWindow, WorkArea, typeof(InnerWindow));
        }

        private void HandleMinInnerWindow(InnerWindow inner)
        {
            MinInnerWindow min = new MinInnerWindow(inner);
            min.MaxEvent += MinInnerWindowMax;
            min.CloseEvent += MinInnerWindowClose;
            BottomBar.AddMinWindow(min);
        }

        private void InnerWindowMin(object sender, System.EventArgs e)
        {
            InnerWindow inner = sender as InnerWindow;
            inner.Visibility = Visibility.Collapsed;
            HandleMinInnerWindow(inner);
        }

        private void InnerWindowMax(object sender, System.EventArgs e)
        {
            InnerWindow inner = sender as InnerWindow;
            if (inner.WindowState == WindowState.Maximized)
            {
                Canvas.SetLeft(inner, inner.canvasPosition.Left);
                Canvas.SetTop(inner, inner.canvasPosition.Top);

                inner.Width = inner.canvasPosition.Width;
                inner.Height = inner.canvasPosition.Height;
                inner.WindowState = WindowState.Normal;
            }
            else{
                Canvas.SetLeft(inner, 0);
                Canvas.SetTop(inner, 0);
                inner.Width = WorkArea.ActualWidth;
                inner.Height = WorkArea.ActualHeight;
                inner.WindowState = WindowState.Maximized;
            }
        }

        private void MinInnerWindowMax(object sender, System.EventArgs e)
        {
            MinInnerWindow min = sender as MinInnerWindow;
            min.Inner.Visibility = Visibility.Visible;
            CanvasHelper.SetTopZIndex(min.Inner, WorkArea, typeof(InnerWindow));
            BottomBar.RemoveMinWindow(min);
        }

        private void MinInnerWindowClose(object sender, System.EventArgs e)
        {
            MinInnerWindow min = sender as MinInnerWindow;
            BottomBar.RemoveMinWindow(min);
        }


        private void WorkControl_SizeChanged(object sender, SizeChangedEventArgs e)
        {
            Size newSize = e.NewSize;
            Size previousSize = e.PreviousSize;

            for (int i = 0; i < VisualTreeHelper.GetChildrenCount(WorkArea); i++)
            {
                UIElement child = VisualTreeHelper.GetChild(WorkArea, i) as UIElement;
                if (Canvas.GetLeft(child) >= newSize.Width)
                {
                    Canvas.SetLeft(child, Canvas.GetLeft(child) + newSize.Width - previousSize.Width);
                }
                if (Canvas.GetTop(child) >= newSize.Height)
                {
                    Canvas.SetTop(child, Canvas.GetTop(child) + newSize.Height - previousSize.Height);
                }
            }
        }


        public void OnTabChange(object sender, SelectionChangedEventArgs args)
        {
            if (args.AddedItems.Count > 0)
            {
                IconTabItem newTab = args.AddedItems[0] as IconTabItem;
                if (newTab != null && newTab.Content == this)
                { 
                    
                }
            }

            if (args.RemovedItems.Count > 0)
            {
                IconTabItem oldTab = args.RemovedItems[0] as IconTabItem;
                if (oldTab != null && oldTab.Content == this)
                {

                }
            }
        }
    }
}