Handle expected error

Author: hukatama024e

src/UserInputMacro/MainWindow.xaml

@@ -5,7 +5,7 @@
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
         xmlns:local="clr-namespace:UserInputMacro"
         mc:Ignorable="d"
-        Title="UserInputMacro" Height="101.867" Width="414.6">
+        Title="UserInputMacro" Height="301.867" Width="414.6">
     <Grid>
         <Button x:Name="recordButton" Content="Record"
                 HorizontalAlignment="Left" Margin="10,10,0,0"
@@ -31,5 +31,7 @@
                  Margin="90,40,0,0" TextWrapping="NoWrap" Width="173" VerticalAlignment="Top" Height="19" Text="{Binding ScriptPath}"/>
         <TextBlock x:Name="scriptPathText" HorizontalAlignment="Left"
                    Margin="19,40,0,0" TextWrapping="Wrap" Text="Script Path" VerticalAlignment="Top" Width="66" Height="19"/>
+        <TextBox x:Name="textBox" HorizontalAlignment="Left" Height="177" Margin="10,75,0,0" TextWrapping="Wrap"
+                 Text="{Binding ErrorMessage}" VerticalAlignment="Top" Width="380" IsReadOnly="True" VerticalScrollBarVisibility="Auto"/>
     </Grid>
 </Window>

src/UserInputMacro/MainWindowViewModel.cs

@@ -1,10 +1,11 @@
-using System.IO;
+using System;
+using System.IO;
 using System.Windows.Threading;
 using System.Threading.Tasks;
 using System.ComponentModel;
 using Microsoft.Win32;
-using System;
 using System.Windows.Input;
+using Microsoft.CodeAnalysis.Scripting;
 
 namespace UserInputMacro
 {
@@ -13,8 +14,11 @@ class MainWindowViewModel : INotifyPropertyChanged
 		private ButtonState buttonState;
 		private ScriptRecorder recorder;
 		private string scriptPath;
+		private string errorMessage;
 
 		private static readonly PropertyChangedEventArgs scriptPathChangedEventArgs = new PropertyChangedEventArgs( nameof( ScriptPath ) );
+		private static readonly PropertyChangedEventArgs errorMessageChangedEventArgs = new PropertyChangedEventArgs( nameof( ErrorMessage ) );
+
 		public event PropertyChangedEventHandler PropertyChanged;
 
 		public DelegateCommand RecordCommand { get; set; }
@@ -37,6 +41,19 @@ public string ScriptPath
 			}
 		}
 
+		public string ErrorMessage
+		{
+			get { return errorMessage; }
+			set {
+				if( errorMessage == value ) {
+					return;
+				}
+
+				errorMessage = value;
+				PropertyChanged?.Invoke( this, errorMessageChangedEventArgs );
+			}
+		}
+
 		public MainWindowViewModel()
 		{
 			buttonState = new ButtonState();
@@ -46,6 +63,8 @@ public MainWindowViewModel()
 			StopCommand = new DelegateCommand( StopCmd_Execute, StopCmd_CanExecute );
 			BrowseCommand = new DelegateCommand( BrowseCmd_Execute );
 			PlayCommand = new AsyncDelegateCommand( PlayCmd_ExecuteAsync, PlayCmd_CanExecute );
+
+			ErrorMessage = "[Message]" + Environment.NewLine + "If expected error occur, view to this text box.";
 		}
 
 		private bool RecordCmd_CanExecute()
@@ -71,11 +90,27 @@ private void RecordCmd_Execute()
 
 		private async Task PlayCmd_ExecuteAsync()
 		{
-			buttonState.IsPlaying = true;
-			await Task.Delay( 50 );
-			WinDispacher?.Invoke( new Action( CommandManager.InvalidateRequerySuggested ) );
+			if( !File.Exists( scriptPath ) ) {
+				ErrorMessage = "[File Error]" + Environment.NewLine + "'" + scriptPath + "' is not found.";
+				return;
+			}
+
+			ErrorMessage = "";
+
+			try {
+				buttonState.IsPlaying = true;
+				await Task.Delay( 50 );
+				WinDispacher?.Invoke( new Action( CommandManager.InvalidateRequerySuggested ) );
+
+				await ScriptExecuter.ExecuteAsync( ScriptPath );
+			}
+			catch( CompilationErrorException ex ) {
+				ErrorMessage = "[Compile Error]" + Environment.NewLine + ex.Message;
+			}
+			catch( Exception ) {
+				throw;
+			}
 
-			await ScriptExecuter.ExecuteAsync( ScriptPath );
 			buttonState.IsPlaying = false;
 		}
 

src/UserInputMacro/ScriptExecuter.cs

@@ -1,5 +1,4 @@
-using System;
-using System.IO;
+using System.IO;
 using System.Threading.Tasks;
 using Microsoft.CodeAnalysis.Scripting;
 using Microsoft.CodeAnalysis.CSharp.Scripting;
@@ -10,16 +9,11 @@ static class ScriptExecuter
 	{
 		public static async Task ExecuteAsync( string scriptPath )
 		{
-			try {
-				using( var hook = new UserInputHook() ) {
-					HookSetting( hook );
+			using( var hook = new UserInputHook() ) {
+				HookSetting( hook );
 
-					var script = CSharpScript.Create( File.ReadAllText( scriptPath ), ScriptOptions.Default, typeof( MacroScript ) );
-					await script.RunAsync( new MacroScript() );
-				}
-			}
-			catch( Exception ex ) {
-				CommonUtil.HandleException( ex );
+				var script = CSharpScript.Create( File.ReadAllText( scriptPath ), ScriptOptions.Default, typeof( MacroScript ) );
+				await script.RunAsync( new MacroScript() );
 			}
 		}