using ComPDFKit.PDFDocument;
using PDF_Office.Helper;
using PDF_Office.ViewModels.BOTA;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using static Dropbox.Api.Sharing.ListFileMembersIndividualResult;

namespace PDF_Office.Views.BOTA
{
/// <summary>
    /// BookmarkContent.xaml 的交互逻辑
/// </summary>
public partial class BookmarkContent : UserControl
{
private BookmarkContentViewModel viewModel = null;

/// <summary>
    /// 上一个ListBoxItem，为选中状态做准备
/// </summary>
private ListBoxItem histotyListBoxItem = null;

private bool isAdd = false;

public BookmarkContent()
{
InitializeComponent();
viewModel = this.DataContext as BookmarkContentViewModel;
KeyEventsHelper.KeyDown -= ShortCut_KeyDown;
KeyEventsHelper.KeyDown += ShortCut_KeyDown;
}

private void ShortCut_KeyDown(object sender, KeyEventArgs e)
{
if (KeyEventsHelper.IsSingleKey(Key.Escape))
{
if (BookMarkListView.SelectedItems == null)
{
return;
}

BookMarkListView.SelectedItems.Clear();
}
}

/// <summary>
    ///ListViewItem，鼠标左键点击
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void ListViewItem_MouseButtonDown(object sender, MouseButtonEventArgs e)
{
object[] objects = new object[] { sender, e };
TextBlock textBlock = null;
ListViewItem listBoxItem = (sender as ListViewItem);
if (e.LeftButton == MouseButtonState.Pressed)
{
if (e.ClickCount >= 2)
    {
    histotyListBoxItem = listBoxItem;
    if (e.OriginalSource is TextBlock)
    {
    textBlock = (TextBlock)e.OriginalSource;

    if (textBlock != null)
    {
    TextBox textBox = CommonHelper.FindVisualChild<TextBox>(listBoxItem);

        SetSelectedStatus(listBoxItem, textBox, textBlock);
        }
        }
        }
        else if (e.ClickCount == 1)
        {
        if (histotyListBoxItem != listBoxItem)
        {
        if (histotyListBoxItem != null)
        {
        histotyListBoxItem.IsSelected = false;
        textBlock = CommonHelper.FindVisualChild<TextBlock>(histotyListBoxItem);
            textBlock.Visibility = Visibility.Visible;
            textBlock.Focusable = true;
            }
            }

            viewModel.ListViewItemMouseDownCommand.Execute(sender);
            }
            }
            else if (e.RightButton == MouseButtonState.Pressed)
            {
            ContextMenu contextMenu = listBoxItem.ContextMenu;
            if (contextMenu.Items.Count == 3)
            {
            MenuItem rename = contextMenu.Items[0] as MenuItem;
            MenuItem editPageIndex = contextMenu.Items[1] as MenuItem;
            MenuItem del = contextMenu.Items[2] as MenuItem;
            if (isSelects)
            {
            rename.IsEnabled = false;
            editPageIndex.IsEnabled = false;
            isSelects = false;
            }
            else
            {
            CPDFBookmark bookmark = (CPDFBookmark)listBoxItem.DataContext;
            if (viewModel.PDFViewer.CurrentIndex == bookmark.PageIndex)
            {
            editPageIndex.IsEnabled = false;
            return;
            }
            rename.IsEnabled = true;
            editPageIndex.IsEnabled = true;
            editPageIndex.CommandParameter = listBoxItem.DataContext;
            editPageIndex.Command = viewModel.EditPageIndexCommand;
            }
            }
            }
            }

            private bool isSelects = false;

            private void BookMarkListView_SelectionChanged(object sender, SelectionChangedEventArgs e)
            {
            var a1 = (sender as ListView).SelectedItems.Count;
if (a1 > 1)
                {
                isSelects = true;
                }
                }

                /// <summary>
                    /// ListViewItem双击时选中状态
                /// </summary>
                /// <param name="listBoxItem"></param>
                /// <param name="textBox"></param>
                /// <param name="textBlock"></param>
                private void SetSelectedStatus(ListBoxItem listBoxItem, TextBox textBox, TextBlock textBlock)
                {
                listBoxItem.IsSelected = true;
                listBoxItem.Focus();
                textBlock.Visibility = Visibility.Collapsed;

textBox.Dispatcher.BeginInvoke(new Action(() =>
                    {
                    textBox.Focus();
                    textBox.SelectAll();
                    //listBoxItem.IsSelected = true;
                    }));
                    }

                    /// <summary>
                        /// ListViewItem失去焦点
                    /// </summary>
                    /// <param name="sender"></param>
                    /// <param name="e"></param>
                    private void ListViewItem_LostFocus(object sender, RoutedEventArgs e)
                    {
                    ListViewItem listItem = sender as ListViewItem;
                    if (listItem != null)
                    {
                    BookMarkListView.ItemContainerGenerator.StatusChanged -= ItemContainerGenerator_StatusChanged;
                    viewModel.LostFocusCommand.Execute(listItem);

                    TextBlock textBlock = CommonHelper.FindVisualChild<TextBlock>(listItem);
                        TextBox text = CommonHelper.FindVisualChild<TextBox>(listItem);

                            if (textBlock.Visibility != Visibility.Visible)
                            {
                            if (isAdd == false && isRename == false)
                            {
                            listItem.IsSelected = false;
                            }
                            else
                            {
                            listItem.IsSelected = true;
                            isAdd = false;
                            }
                            if (text.IsSelectionActive == true)
                            {
                            textBlock.Visibility = Visibility.Visible;
                            }
                            }
                            else
                            {
                            listItem.IsSelected = true;
                            }

                            //if (histotyListBoxItem != null)
                            //{
                            //    histotyListBoxItem.IsSelected = false;
                            //    TextBlock textBlock = CommonHelper.FindVisualChild<TextBlock>(histotyListBoxItem);
                                //    textBlock.Visibility = Visibility.Visible;
                                //    textBlock.Focusable = true;
                                //}
                                //if (textBlock.Visibility == Visibility.Collapsed)
                                //{
                                //    listItem.IsSelected = false;
                                //    //textBlock.Visibility = Visibility.Visible;
                                //}
                                //else
                                //{
                                //    listItem.IsSelected = true;
                                //    //textBlock.Visibility = Visibility.Collapsed;
                                //}
                                }
                                }

                                private bool isRename = false;

                                /// <summary>
                                    /// 右键菜单-重命名
                                /// </summary>
                                /// <param name="sender"></param>
                                /// <param name="e"></param>
                                private void MenuItemRename_Click(object sender, RoutedEventArgs e)
                                {
                                if (sender is MenuItem)
                                {
                                MenuItem menuItem = (MenuItem)sender;
                                CPDFBookmark bookmark = menuItem.CommandParameter as CPDFBookmark;
                                if (bookmark != null)
                                {
                                BookMarkListView.ItemContainerGenerator.StatusChanged -= ItemContainerGenerator_StatusChanged;
                                isRename = true;
                                ListViewItem listBoxItem = (ListViewItem)(BookMarkListView.ItemContainerGenerator.ContainerFromItem(bookmark));
                                histotyListBoxItem = listBoxItem;

                                TextBox textBox = CommonHelper.FindVisualChild<TextBox>(listBoxItem);
                                    TextBlock textBlock = CommonHelper.FindVisualChild<TextBlock>(listBoxItem);
                                        SetSelectedStatus(listBoxItem, textBox, textBlock);
                                        }
                                        }
                                        }

                                        /// <summary>
                                            /// BookMarkListView，鼠标点击
                                        /// </summary>
                                        /// <param name="sender"></param>
                                        /// <param name="e"></param>
                                        private void BookMarkListView_PreviewMouseDown(object sender, MouseButtonEventArgs e)
                                        {
                                        if (e.LeftButton == MouseButtonState.Pressed)
                                        {
                                        var pos = e.GetPosition(BookMarkListView);

                                        var result = VisualTreeHelper.HitTest(BookMarkListView, pos);
                                        if (result != null)
                                        {
                                        //获取当前鼠标指针下的容器
                                        var listBoxItem = CommonHelper.FindVisualParent<ListViewItem>(result.VisualHit);
                                            if (listBoxItem == null)
                                            {
                                            if (BookMarkListView.SelectedItem != null)
                                            {
                                            ListViewItem item = (ListViewItem)(BookMarkListView.ItemContainerGenerator.ContainerFromItem(BookMarkListView.SelectedItem));
                                            item.IsSelected = false;
                                            TextBlock box = CommonHelper.FindVisualChild<TextBlock>(item);
                                                box.Visibility = Visibility.Visible;
                                                BookMarkListView.SelectedItems.Clear();
                                                }
                                                if (histotyListBoxItem != null)
                                                {
                                                var pos1 = e.GetPosition(histotyListBoxItem);
                                                var result1 = VisualTreeHelper.HitTest(BookMarkListView, pos1);
                                                if (result1 == null)
                                                {
                                                histotyListBoxItem.IsSelected = false;
                                                TextBlock textBlock = CommonHelper.FindVisualChild<TextBlock>(histotyListBoxItem);
                                                    textBlock.Visibility = Visibility.Visible;
                                                    textBlock.Focusable = true;
                                                    }
                                                    }
                                                    }
                                                    else
                                                    {
                                                    TextBox textBox = CommonHelper.FindVisualChild<TextBox>(listBoxItem);
                                                        TextBlock textBlock = CommonHelper.FindVisualChild<TextBlock>(listBoxItem);
                                                            if (textBox.IsFocused == false)
                                                            {
                                                            listBoxItem.Focus();
                                                            }
                                                            }
                                                            }
                                                            //BookMarkListView.Focus();
                                                            }
                                                            }

                                                            /// <summary>
                                                                /// 右键菜单-删除
                                                            /// </summary>
                                                            /// <param name="sender"></param>
                                                            /// <param name="e"></param>
                                                            private void MenuItemDeleteCommand_Click(object sender, RoutedEventArgs e)
                                                            {
                                                            List<int> pagelist = new List<int>();
                                                                    for (int i = 0; i < BookMarkListView.SelectedItems.Count; i++)
                                                                      {
                                                                      CPDFBookmark item = BookMarkListView.SelectedItems[i] as CPDFBookmark;
                                                                      pagelist.Add(BookMarkListView.Items.IndexOf(item));
                                                                      }
                                                                      pagelist.Sort();
                                                                    for (int i = 0; i < pagelist.Count; i++)
                                                                      {
                                                                      CPDFBookmark data = BookMarkListView.Items[pagelist[pagelist.Count - i - 1]] as CPDFBookmark;
                                                                      if (data != null)
                                                                      {
                                                                      viewModel.DeleteCommand.Execute(data);
                                                                      }
                                                                      }
                                                                      }

                                                                      public void BtnAddBookmark_Click(object sender, RoutedEventArgs e)
                                                                      {
                                                                      isAdd = true;
                                                                      viewModel.AddBookmarkCommand.Execute(BookMarkListView);
                                                                      if (viewModel.IsHasBookmark == false)
                                                                      {
                                                                      BookMarkListView.ScrollIntoView(viewModel.AddCPDFBookmark);
                                                                      ListViewItem myListBoxItem = (ListViewItem)(BookMarkListView.ItemContainerGenerator.ContainerFromItem(viewModel.AddCPDFBookmark));
                                                                      if (myListBoxItem == null)
                                                                      {
                                                                      BookMarkListView.ItemContainerGenerator.StatusChanged -= ItemContainerGenerator_StatusChanged;
                                                                      BookMarkListView.ItemContainerGenerator.StatusChanged += ItemContainerGenerator_StatusChanged;
                                                                      }
                                                                      else
                                                                      {
                                                                    TextBox textBox = CommonHelper.FindVisualChild<TextBox>(myListBoxItem);
                                                                        TextBlock textBlock = CommonHelper.FindVisualChild<TextBlock>(myListBoxItem);

                                                                            SetSelectedStatus(myListBoxItem, textBox, textBlock);
                                                                            }
                                                                            }
                                                                            }

                                                                            private void ItemContainerGenerator_StatusChanged(object sender, EventArgs e)
                                                                            {
                                                                            ItemContainerGenerator itemContainer = sender as ItemContainerGenerator;
                                                                            if (itemContainer.Status == GeneratorStatus.ContainersGenerated)
                                                                            {
                                                                            BookMarkListView.ScrollIntoView(viewModel.AddCPDFBookmark);
                                                                            ListViewItem myListBoxItem = (ListViewItem)(BookMarkListView.ItemContainerGenerator.ContainerFromItem(viewModel.AddCPDFBookmark));
                                                                            if (myListBoxItem != null)
                                                                            {
                                                                            if (myListBoxItem.RenderSize.Width < 0 && myListBoxItem.RenderSize.Height < 0)
                                                                              {
                                                                              BookMarkListView.UpdateLayout();
                                                                              myListBoxItem.UpdateLayout();
                                                                              BookMarkListView.ScrollIntoView(viewModel.AddCPDFBookmark);
                                                                              }
                                                                            TextBox textBox = CommonHelper.FindVisualChild<TextBox>(myListBoxItem);
                                                                                TextBlock textBlock = CommonHelper.FindVisualChild<TextBlock>(myListBoxItem);
                                                                                    SetSelectedStatus(myListBoxItem, textBox, textBlock);
                                                                                    }
                                                                                    }
                                                                                    }

                                                                                    private void BookMarkListView_KeyDown(object sender, KeyEventArgs e)
                                                                                    {
                                                                                    if (BookMarkListView.SelectedItems == null)
                                                                                    {
                                                                                    return;
                                                                                    }
                                                                                    if (e.Key == Key.Escape)
                                                                                    {
                                                                                    BookMarkListView.SelectedItems.Clear();
                                                                                    }
                                                                                    //if (e.Key == Key.Delete)
                                                                                    //{
                                                                              //    if (BookMarkListView.SelectedItems.Count > 0)
                                                                                        //    {
                                                                                        //        //全选删除
                                                                                        //        if (BookMarkListView.SelectedItems.Count == BookMarkListView.Items.Count)
                                                                                        //        {
                                                                                        //        }
                                                                                        //    }
                                                                                        //}
                                                                                        }
                                                                                        }
                                                                                        }