using ComPDFKit.PDFPage;
using compdfkit_tools.Edit;
using compdfkit_tools.PDFControl;
using ComPDFKitViewer;
using ComPDFKitViewer.PdfViewer;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.Linq;
using System.Runtime.CompilerServices;
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.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Xml.Linq;

namespace edit_ctrl_demo
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window,INotifyPropertyChanged
    {
        public bool CanUndo
        {
            get
            {
                if (PDFView != null)
                {
                    return PDFView.UndoManager.CanUndo;
                }
                return false;
            }
        }

        public bool CanRedo
        {
            get
            {
                if (PDFView != null)
                {
                    return PDFView.UndoManager.CanRedo;
                }
                return false;
            }
        }

        public MainWindow()
        {
            InitializeComponent();
            Loaded += MainWindow_Loaded;
            DataContext = this;
        }

        public event PropertyChangedEventHandler PropertyChanged;
        protected void OnPropertyChanged([CallerMemberName] string name = null)
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name));
        }

        private void MainWindow_Loaded(object sender, RoutedEventArgs e)
        {
            LoadDefaultDocument();
            TitleBarTool.OpenFileEvent += TitleBarTool_OpenFileEvent;
            PDFView.PDFEditActiveHandler += PDFView_PDFEditActiveHandler;
            PDFView.UndoManager.PropertyChanged += UndoManager_PropertyChanged;
        }

        private void UndoManager_PropertyChanged(object sender, PropertyChangedEventArgs e)
        {
            OnPropertyChanged(e.PropertyName);
        }

        /// <summary>
        /// 文字或图片块选中事件
        /// </summary>
        private void PDFView_PDFEditActiveHandler(object sender, PDFEditEvent e)
        {
            if (e == null)
            {
                PDFEditContainer.Child= null;
                return;
            }

            if(e.EditType==CPDFEditType.EditText)
            {
                PDFTextEditControl textEditControl= new PDFTextEditControl();
                textEditControl.SetPDFTextEditData(e);
                PDFEditContainer.Child = textEditControl;
                return;
            }

            if(e.EditType== CPDFEditType.EditImage)
            {
                PDFImageEditControl imageEditControl= new PDFImageEditControl();
                imageEditControl.InitWithPDFViewer(PDFView);
                imageEditControl.SetPDFImageEditData(e);
                PDFEditContainer.Child = imageEditControl;
                return;
            }
        }

        private void TitleBarTool_OpenFileEvent(object sender, string filePath)
        {
            ClearPDFEditState();
            PDFView?.CloseDocument();
            PDFView?.InitDocument(filePath);
            PDFView?.Load();
            PDFView?.SetMouseMode(MouseModes.PanTool);
        }

        private void LoadDefaultDocument()
        {
            string defaultFilePath = "..\\..\\..\\..\\developer_guide_windows.pdf";
            PDFView?.InitDocument(defaultFilePath);
            PDFView?.Load();
        }

        /// <summary>
        /// 文字编辑模式
        /// </summary>
        private void PDFTextEditButton_Click(object sender, RoutedEventArgs e)
        {
            ToggleButton senderBtn=sender as ToggleButton;
            if(senderBtn != null)
            {
                PDFImageEditButton.IsChecked = false;
                if (senderBtn.IsChecked == true)
                {
                    PDFView?.SetPDFEditType(CPDFEditType.EditText);
                    PDFView?.SetMouseMode(MouseModes.PDFEdit);
                    PDFView?.ReloadDocument();
                }
                else
                {
                    PDFView?.SetPDFEditType(CPDFEditType.None);
                    PDFView?.SetMouseMode(MouseModes.PanTool);
                    PDFView?.ReloadDocument();
                }
            }
        }

        /// <summary>
        /// 图片编辑模式
        /// </summary>
        private void PDFImageEditButton_Click(object sender, RoutedEventArgs e)
        {
            ToggleButton senderBtn = sender as ToggleButton;
            if (senderBtn != null)
            {
                PDFTextEditButton.IsChecked= false;
                if (senderBtn.IsChecked == true)
                {
                    PDFView?.SetPDFEditType(CPDFEditType.EditImage);
                    PDFView?.SetMouseMode(MouseModes.PDFEdit);
                    PDFView?.ReloadDocument();
                }
                else
                {
                    PDFView?.SetPDFEditType(CPDFEditType.None);
                    PDFView?.SetMouseMode(MouseModes.PanTool);
                    PDFView?.ReloadDocument();
                }
            }
        }

        private void ClearPDFEditState()
        {
            PDFTextEditButton.IsChecked = false;
            PDFImageEditButton.IsChecked = false;
            PDFEditContainer.Child = null;
        }

        private void UndoBtn_Click(object sender, RoutedEventArgs e)
        {
            PDFView?.UndoManager?.Undo();
        }

        private void RedoBtn_Click(object sender, RoutedEventArgs e)
        {
            PDFView?.UndoManager?.Redo();
        }
    }
}