using KGIS.Framework.Views;
using Kingo.PluginServiceInterface;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;

namespace Kingo.PlatformPlugin.Services
{
    public class DockViewService : IDockViewService
    {
        private IDockPanel2 _DockPanel { get; set; }
        private List<IElementInfo> _Elements = new List<IElementInfo>();
        public List<IElementInfo> Elements => _Elements;

        public EnumOrientation Orientation { get; set; }
        public bool IsShowSaveButton { get; set; }
        public Action<string> Callback { get; set; }

        public void AddElement(IElementInfo obj)
        {

            if (_DockPanel == null)
                throw new Exception("视图未初始化，调用AddElements函数前，请先调用InitView函数进行初始化视图");
            try
            {
                _Elements.Add(obj);
                _Elements = _Elements.OrderBy(e => e.ShowIndex).ToList();
                Grid grid2 = (_DockPanel as System.Windows.Controls.UserControl).Content as Grid;
                Grid grid = null;
                Grid btnGrid = null;
                foreach (var item in grid2.Children)
                {
                    if (item is Grid)
                    {
                        if ((item as Grid).Name == "ContentPanel")
                            grid = item as Grid;
                        if ((item as Grid).Name == "btnPanel")
                            btnGrid = item as Grid;

                    }
                }
                if (!IsShowSaveButton && btnGrid != null)
                {
                    btnGrid.Visibility = Visibility.Collapsed;
                }
                if (grid == null)
                    return;
                grid.Children.Clear();
                grid.RowDefinitions.Clear();
                grid.ColumnDefinitions.Clear();
                int count = _Elements.Count;
                foreach (var item in _Elements)
                {
                    if ((item as UserControl).Parent != null)
                    {
                        if (((item as UserControl).Parent as Grid) != null)
                            ((item as UserControl).Parent as Grid).Children.Clear();
                        //(item as UserControl).Parent.SetValue(ContentPresenter.ContentProperty, null);
                    }
                    //grid.Children.Remove(item as UIElement);
                    grid.Children.Add(item as UIElement);
                    item.IsShow = true;
                    if (Orientation == EnumOrientation.Vertical)
                    {
                        grid.RowDefinitions.Add(new RowDefinition());
                        if (item.DockHeight > 0)
                            grid.RowDefinitions[grid.RowDefinitions.Count - 1].Height = new GridLength(item.DockHeight);
                        if (item.ResetSize || _Elements.Count > 1)
                        {
                            grid.Children[grid.Children.Count - 1].SetValue(Grid.RowProperty, grid.RowDefinitions.Count - 1);
                            GridSplitter split = new GridSplitter();
                            split.VerticalAlignment = VerticalAlignment.Bottom;
                            split.HorizontalAlignment = HorizontalAlignment.Stretch;
                            split.Height = 5;
                            split.SetValue(Grid.RowProperty, grid.RowDefinitions.Count - 1);
                            grid.Children.Add(split);
                        }
                    }
                    else
                    {
                        grid.ColumnDefinitions.Add(new ColumnDefinition());
                        if (item.DockWidth > 0)
                            grid.ColumnDefinitions[grid.ColumnDefinitions.Count - 1].Width = new GridLength(item.DockWidth);
                        if (item.ResetSize || _Elements.Count > 1)
                        {
                            grid.Children[grid.Children.Count - 1].SetValue(Grid.ColumnProperty, grid.ColumnDefinitions.Count - 1);
                            GridSplitter split = new GridSplitter();
                            split.VerticalAlignment = VerticalAlignment.Stretch;
                            split.HorizontalAlignment = HorizontalAlignment.Right;
                            split.Width = 5;
                            grid.Children.Add(split);
                        }
                    }
                }
                grid.UpdateLayout();
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        public IDockPanel2 InitView()
        {
            if (_DockPanel == null)
            {
                View.DefaultDockView _view = new View.DefaultDockView();
                _view.BtnCallBack += (s) =>
                {
                    if (s == "SaveEdit")
                    {
                        Save();
                    }
                    else
                    {
                        Save();
                        Callback?.Invoke(s);
                    }
                };
                _DockPanel = _view;
                _DockPanel.CloseViewHandler += (s, a) =>
                {
                    Grid grid2 = (_DockPanel as System.Windows.Controls.UserControl).Content as Grid;
                    Grid grid = null;
                    Grid btnGrid = null;
                    foreach (var item in grid2.Children)
                    {
                        if (item is Grid)
                        {
                            if ((item as Grid).Name == "ContentPanel")
                                grid = item as Grid;
                            if ((item as Grid).Name == "btnPanel")
                                btnGrid = item as Grid;

                        }
                    }
                    if (grid == null)
                        return;
                    grid.Children.Clear();
                    grid.RowDefinitions.Clear();
                    grid.ColumnDefinitions.Clear();

                    _DockPanel = null;
                };
            }
            _Elements.Clear();
            return _DockPanel;
        }
        public void Save()
        {
            try
            {
                foreach (var item in _Elements)
                {
                    item.SaveEdit();
                }
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        public void RemoveElement(IElementInfo obj)
        {
            int idx = _Elements.IndexOf(obj);
            if (idx > -1)
            {
                _Elements.RemoveAt(idx);
                if (_DockPanel != null)
                {
                    Grid grid = (_DockPanel as System.Windows.Controls.UserControl).Content as Grid;
                    idx = grid.Children.IndexOf(obj as UIElement);
                    if (idx > -1)
                    {
                        grid.Children.RemoveAt(idx);
                    }
                }
            }
        }
    }
}