new project: add some new project folder validation #201

Author: unitycoder

UnityLauncherPro/NewProject.xaml

@@ -44,13 +44,13 @@
                 <CheckBox Grid.Column="3" x:Name="chkForceDX11" Content="DX11" ToolTip="Use DX11 instead of DX12" Margin="6,0,0,0" IsChecked="True" Checked="chkForceDX11_Checked" Unchecked="chkForceDX11_Checked"/>
             </Grid>
 
-            <Label x:Name="lblNewProjectFolderLabel" Grid.Column="0" Content="Project Folder:" Foreground="{DynamicResource ThemeButtonForeground}" Margin="0" Padding="0,5,5,0" />
+            <Label x:Name="lblNewProjectFolderLabel" Grid.Column="0" Content="Project Root Folder:" Foreground="{DynamicResource ThemeButtonForeground}" Margin="0" Padding="0,5,5,0" />
             <Grid HorizontalAlignment="Stretch" Margin="0,3,0,0">
                 <Grid.ColumnDefinitions>
                     <ColumnDefinition Width="18*"/>
                     <ColumnDefinition Width="*"/>
                 </Grid.ColumnDefinitions>
-                <TextBox Grid.Column="0" x:Name="txtNewProjectFolder" VerticalAlignment="Center" IsUndoEnabled="True" TextChanged="TxtNewProjectName_TextChanged" PreviewKeyDown="TxtNewProjectName_PreviewKeyDown" TabIndex="0" Margin="0,2,6,2" />
+                <TextBox Grid.Column="0" x:Name="txtNewProjectFolder" VerticalAlignment="Center" IsUndoEnabled="True" TextChanged="txtNewProjectFolder_TextChanged" PreviewKeyDown="TxtNewProjectName_PreviewKeyDown" TabIndex="0" Margin="0,2,6,2" />
                 <Button Grid.Column="1" x:Name="btnBrowseForProjectFolder" Style="{StaticResource CustomButton}" ToolTip="Browse for New Project folder"  Content="..." Height="22" Width="22" HorizontalAlignment="Right" VerticalAlignment="Top" FontSize="16" Padding="1,-2,1,1" BorderBrush="{x:Null}" Click="btnBrowseForProjectFolder_Click"/>
             </Grid>
 

UnityLauncherPro/NewProject.xaml.cs

@@ -336,11 +336,26 @@ private void chkForceDX11_Checked(object sender, RoutedEventArgs e)
         private void btnBrowseForProjectFolder_Click(object sender, RoutedEventArgs e)
         {
             var folder = Tools.BrowseForOutputFolder("Select New Project folder");
-            if (string.IsNullOrEmpty(folder) == false)
+            if (string.IsNullOrEmpty(folder) == false && Directory.Exists(folder) == true)
             {
                 txtNewProjectFolder.Text = folder;
             }
 
         }
+
+        private void txtNewProjectFolder_TextChanged(object sender, TextChangedEventArgs e)
+        {
+            // validate that folder exists
+            if (Directory.Exists(txtNewProjectFolder.Text) == false)
+            {
+                txtNewProjectFolder.BorderBrush = Brushes.Red; // not visible if focused
+                btnCreateNewProject.IsEnabled = false;
+            }
+            else
+            {
+                txtNewProjectFolder.BorderBrush = null;
+                btnCreateNewProject.IsEnabled = true;
+            }
+        }
     }
 }