Sysnet.TouchScreen/AppCode/DialogController.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using GalaSoft.MvvmLight.Messaging;

namespace Sysnet.TouchScreen
{
    /// <summary>
    /// A class to display MessageBoxes and CommonDialog windows.
    /// </summary>
    public class DialogController
    {
        public DialogController()
        {
            // Standard message to display a dialog message
            Messenger.Default.Register<DialogMessage>(this, MsgDialogMessage_Handler);

            Messenger.Default.Register<GenericMessageAction<MsgOpenFile, MsgOpenFile>>(this, this.MsgOpenFile_Handler);
            Messenger.Default.Register<GenericMessageAction<MsgSaveFile, MsgOpenFile>>(this, this.MsgSaveFile_Handler);
            Messenger.Default.Register<GenericMessageAction<MsgSelectFolder, string>>(this, this.MsgOpenFolder_Handler);
        }

        void MsgDialogMessage_Handler(DialogMessage msg)
        {
            var result = System.Windows.MessageBox.Show(
                        msg.Content,
                        msg.Caption,
                        msg.Button,
                        msg.Icon);

            // Send callback
            msg.ProcessCallback(result);
        }

        // --- OPEN FILE
        void MsgOpenFile_Handler(GenericMessageAction<MsgOpenFile, MsgOpenFile> msg)
        {
            MsgOpenFile data = msg.Data;

            FileDialogResult r = DialogController.ShowOpenFileDialog(data.Multiselect);
            data.FileName = r.FileName;
            data.FileNames = r.FileNames;
            data.NewFile = r.CommonDialogReturn;
            msg.Execute(data);
        }


        // --- SAVE FILE
        void MsgSaveFile_Handler(GenericMessageAction<MsgSaveFile, MsgOpenFile> msg)
        {
            FileDialogResult r = DialogController.ShowSaveFileDialog();
            msg.Execute(new MsgOpenFile(r.FileName, r.CommonDialogReturn));
        }



        // --- OPEN FOLDER
        void MsgOpenFolder_Handler(GenericMessageAction<MsgSelectFolder, string> msg) //MsgSelectFolder msg)
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