using ComPDFKitViewer;
using ComPDFKitViewer.PdfViewer;
using PDF_Office.Model;
using Prism.Commands;
using Prism.Mvvm;
using Prism.Regions;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace PDF_Office.ViewModels.PropertyPanel.PDFEdit
{
    public class ImageTextEditPropertyViewModel : PDFEditVM, INavigationAware
    {
        #region 变量
        protected List<ComPDFKitViewer.PDFEditEvent> TextEditEventList;
        public event EventHandler ClearCheckedAglin;
        #endregion

        #region Command
        public DelegateCommand<object> ImgAlignCheckedCommand { get; set; }
        #endregion

        public ImageTextEditPropertyViewModel()
        {
            ImgAlignCheckedCommand = new DelegateCommand<object>(ImgAlignChecked);

        }

        #region Command实现
        private void ImgAlignChecked(object obj)
        {
            if (obj != null)
            {
                switch ((string)obj)
                {
                    case "AlignLeft":
                        PDFViewer.SetPDFEditAligment(AlignModes.AlignLeft);
                        break;
                    case "AlignHorizonCenter":
                        PDFViewer.SetPDFEditAligment(AlignModes.AlignHorizonCenter);
                        break;
                    case "AlignRight":
                        PDFViewer.SetPDFEditAligment(AlignModes.AlignRight);
                        break;
                    case "DistributeHorizontal":
                        PDFViewer.SetPDFEditAligment(AlignModes.DistributeHorizontal);
                        break;
                    case "AlignTop":
                        PDFViewer.SetPDFEditAligment(AlignModes.AlignTop);
                        break;
                    case "AlignVerticalCenter":
                        PDFViewer.SetPDFEditAligment(AlignModes.AlignVerticalCenter);
                        break;
                    case "AlignBottom":
                        PDFViewer.SetPDFEditAligment(AlignModes.AlignBottom);
                        break;
                    case "DistributeVertical":
                        PDFViewer.SetPDFEditAligment(AlignModes.DistributeVertical);
                        break;
                }

            }
        }
        #endregion

        public void OnNavigatedTo(NavigationContext navigationContext)
        {
            navigationContext.Parameters.TryGetValue<CPDFViewer>(ParameterNames.PDFViewer, out PDFViewer);
            navigationContext.Parameters.TryGetValue<List<PDFEditEvent>>(ParameterNames.AnnotEvent, out TextEditEventList);
            if (PDFViewer != null)
            {
                if (TextEditEventList != null && TextEditEventList.Count > 0)
                {
                    TextEditEvent = TextEditEventList[0];
                
                    if (TextEditEventList.Count == 2)
                    {
                        IsLayoutAlign = true;
                        IsLayoutAvgAlign = false;
                    }
                    else if (TextEditEventList.Count > 2)
                    {
                        IsLayoutAlign = true;
                        IsLayoutAvgAlign = true;
                    }
                    else
                    {
                        IsLayoutAlign = false;
                        IsLayoutAvgAlign = false;
                    }
                    
                }
            }

        }

        public bool IsNavigationTarget(NavigationContext navigationContext) { return true; }

        
        public void OnNavigatedFrom(NavigationContext navigationContext) 
        { 
           
            ClearCheckedAglin?.Invoke(null, null);
        }


    }
}