MARKUS

using KCOM.Common;

using KCOMDataModel.DataModel;

using System;

using System.Collections.Generic;

using System.Collections.ObjectModel;

using System.ComponentModel;

using System.Linq;

using System.Text;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Data;

using System.Windows.Documents;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Imaging;

using System.Windows.Navigation;

using System.Windows.Shapes;

namespace KCOM.Controls

{

    /// <summary>

    /// Interaction logic for PageNavigator.xaml

    /// </summary>

    public partial class PageNavigator : UserControl, INotifyPropertyChanged

    {

        public List<FAVORITE_DOC> _FavoriteSet { get; set; }

        public event PropertyChangedEventHandler PropertyChanged;

        public PageNavigator()

        {            

            InitializeComponent();

            _Initialize = true;

        }

        public ObservableCollection<ThumbnailItem> _thumbnailItems;

        private List<DOCPAGE> _PageList = null;

        private string _DefaultUri = null;

        public ThumbnailItem CurrentPage = null;

        public ThumbnailItem _NextPage = null;

        private bool _Initialize;

        public event EventHandler<PageChangeEventArgs> PageChanged;

        public event EventHandler<PageChangeEventArgs> PageChanging;

        public class PageChangeEventArgs : EventArgs

        {

            public DOCPAGE CurrentPage { get; set; }

            public string PageUri { get; set; }

            public int PageNumber { get; set; }

        }

        private bool _IsFitOn { get; set; }

        public bool IsFitOn

        {

            get

            {

                return _IsFitOn;

            }

            set

            {

                _IsFitOn = value;

                RaisePropertyChanged("IsFitOn");

            }

        }

        public void RaisePropertyChanged(string propName)

        {

            if (PropertyChanged != null)

                PropertyChanged(this, new PropertyChangedEventArgs(propName));

        }

        public void SetPageNavi(List<DOCPAGE> PageList, string DefaultUri)

        {

            this._PageList = PageList;

            this._DefaultUri = DefaultUri;

            ThumbnailSet();

        }

        private void ImgListbox_SelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)

        {

            //tmStart = false;

            //tm.Stop();

            //tm.Tick -= new EventHandler(tm_Tick);

            System.Threading.Tasks.Task.Factory.StartNew(() =>

            {

                int _PageNo = -1;

                if (this.CurrentPage != null)

                {

                    _PageNo = this.CurrentPage.PageNumber;

                };

                if (_PageNo != (ImgListbox.SelectedItem as ThumbnailItem).PageNumber)

                {

                    GotoPage((ImgListbox.SelectedItem as ThumbnailItem).PageNumber);

                }

            }).RunAndForget();

        }

        public bool GotoPageFlag = false;

        public void GotoPage(int _pageNumber)

        {

            int _PageNo = -1;

            if (int.TryParse(_pageNumber.ToString(), out _PageNo))

            {

                var _page = _thumbnailItems.Where(item => item.PageNumber == _PageNo);

                if (_page.Count() > 0)

                {

                    ThumbnailItem _item = _page.First();

                    setPageChange(_item);

                }

            }

        }

        private void setPageChange(ThumbnailItem thumbnailItem)

        {

            if (thumbnailItem != null)

            {

                if (PageChanging != null)

                {

                    CurrentPage = _NextPage;

                    _NextPage = thumbnailItem;

                    PageChanging(this, new PageChangeEventArgs

                    {

                        CurrentPage = _PageList.Where(p => p.PAGE_NUMBER == thumbnailItem.PageNumber).First(),

                        PageNumber = Convert.ToInt32(thumbnailItem.PageNumber),

                        PageUri = null

                    });

                }

            }

        }

        private void Grid_LeftButtonDown(object sender, MouseButtonEventArgs e)

        {

        }

        private void ThumbnailSet()

        {

            if (!_Initialize) return;

            this._thumbnailItems = new ObservableCollection<ThumbnailItem>();

            var uri = _DefaultUri.Replace("{0}/{1}_{2}", "8/0_0");

            this._PageList = this._PageList.OrderBy(data => data.PAGE_NUMBER).ToList();

            this._PageList.ForEach(page =>

            {

                var _pageNo = page.PAGE_NUMBER;

                this._thumbnailItems.Add(new ThumbnailItem

                {

                    ImageUri = new Uri(uri.Replace("{PageNo}", _pageNo.ToString())),

                    PageNumber = Convert.ToInt32(_pageNo),

                    Angle = Convert.ToInt32(page.PAGE_ANGLE),

                });

            });

            txtTotPageNo.Text = this._PageList.Count().ToString();

            txtThumbCount.Text = String.Format("Count : {0}", (this._thumbnailItems.Count).ToString());

            if (ImgListbox.ItemsSource == null)

            {

                ImgListbox.ItemsSource = this._thumbnailItems;

                if (ImgListbox.Items.Count > 0)

                {

                    //int StartPageIdx = Convert.ToInt32(App.ViewInfo.StartPage) - 1;

                    int StartPageIdx = 1;

                    //if (App.ViewInfo.IsCustomPage)

                    //{

                    //    ImgListbox.SelectedItem = ImgListbox.Items.Where(data => (data as ThumbnailItem).PageNumber == Convert.ToInt32(App.ViewInfo.StartPage)).FirstOrDefault();

                    //}

                    //else

                    //{

                        if (StartPageIdx <= 0 || StartPageIdx > ImgListbox.Items.Count || StartPageIdx == 1)

                        {

                            ImgListbox.SelectedItem = ImgListbox.Items[0];

                        }

                        else

                        {

                            ImgListbox.SelectedItem = ImgListbox.Items[StartPageIdx];

                        }

                    //}

                }

            }

            else

            {

                ImgListbox.UpdateLayout();

                ImgListbox.ItemsSource = this._thumbnailItems;

            }

        }

    }

}