allow file drag&drop to job list, avoid having multiple entries with jame job in job list

VECTO3GUI/Helper/FileDialogHelper.cs

@@ -17,7 +17,7 @@ namespace VECTO3GUI.Helper
 		public const string JobFileExtension = ".vecto";
 
 		public const string XMLFilter = "XML Files (*.xml)|*.xml|All Files (*.*)|*.*";
-		public const string JobFilter = "Vecto Files (*.vecto|*.vecto|All Files (*.*)|*.*";
+		public const string JobFilter = "Vecto Files (*.vecto)|*.vecto|All Files (*.*)|*.*";
 
 		public static string[] ShowSelectFilesDialog(bool multiselect)
 		{

VECTO3GUI/ViewModel/Impl/JoblistViewModel.cs

@@ -397,20 +397,36 @@ namespace VECTO3GUI.ViewModel.Impl
 			if (filePath.IsNullOrEmpty() || !IsNewJobFile(filePath.First()))
 				return;
 
-			if (IsJobFile(filePath.First()))
-			{
-				var jobEntry = SerializeHelper.DeserializeToObject<JobEntry>(filePath.First());
-				jobEntry.JobEntryFilePath = filePath.First();
+			HandleFileOpen(filePath.First());
+		}
+
+		public void HandleFileOpen(string filePath)
+		{
+			JobEntry jobEntry = null;
+			if (IsJobFile(filePath)) {
+				jobEntry = SerializeHelper.DeserializeToObject<JobEntry>(filePath);
+				jobEntry.JobEntryFilePath = filePath;
 				jobEntry.Selected = true;
-				_jobs.Add(jobEntry);
-			}
-			else if(IsXmlFile(filePath.First()))
-			{
-				var jobEntry = GetAdditionalJobEntry(filePath.First());
+				//_jobs.Add(jobEntry);
+			} else if (IsXmlFile(filePath)) {
+				jobEntry = GetAdditionalJobEntry(filePath);
 				jobEntry.Selected = true;
+				//_jobs.Add(jobEntry);
+			}
+			if (jobEntry == null) {
+				return;
+			}
+
+			var newJob = Path.GetFullPath(jobEntry.JobEntryFilePath);
+			var existing = _jobs.Where(x => Path.GetFullPath(x.JobEntryFilePath).Equals(newJob, StringComparison.InvariantCultureIgnoreCase)).ToArray();
+			if (existing.Length == 0) {
 				_jobs.Add(jobEntry);
+				return;
 			}
+
+			SelectedJobEntry = existing.First();
 		}
+
 		private bool IsJobFile(string filePath)
 		{
 			var extension = Path.GetExtension(filePath)?.ToLower();

VECTO3GUI/ViewModel/Interfaces/IJoblistViewModel.cs

@@ -11,6 +11,7 @@ namespace VECTO3GUI.ViewModel.Interfaces
 		ObservableCollection<MessageEntry> Messages { get; }
 		ICommand AddBusJob { get; }
 		ICommand AddJob { get; }
+		void HandleFileOpen(string filename);
 		ICommand RemoveJob { get; }
 		ICommand RemoveAllJobs { get; }
 		ICommand MoveJobUp { get; }

VECTO3GUI/Views/JoblistTabView.xaml

@@ -7,7 +7,7 @@
              xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity"
              xmlns:converter="clr-namespace:VECTO3GUI.Helper.Converter"
              mc:Ignorable="d" 
-             d:DesignHeight="450" d:DesignWidth="800"
+             d:DesignHeight="800" d:DesignWidth="500"
              xmlns:Dialog="clr-namespace:MahApps.Metro.Controls.Dialogs;assembly=MahApps.Metro"
              xmlns:interfaces="clr-namespace:VECTO3GUI.ViewModel.Interfaces"
              Dialog:DialogParticipation.Register="{Binding}">

VECTO3GUI/Views/JoblistView.xaml

@@ -74,7 +74,8 @@
             <DataGrid x:Name="JobList" ItemsSource="{Binding Jobs}" 
                       SelectedValue="{Binding DataContext.SelectedJobEntry, RelativeSource={RelativeSource AncestorType=views:JoblistView}}"
                       Style="{DynamicResource AzureDataGrid}" BorderThickness="1" CanUserAddRows="False" AutoGenerateColumns="False" SelectionUnit="FullRow" 
-                      IsReadOnly="False" HeadersVisibility="All"  RowHeaderWidth="5" IsSynchronizedWithCurrentItem="True" >
+                      IsReadOnly="False" HeadersVisibility="All"  RowHeaderWidth="5" IsSynchronizedWithCurrentItem="True" 
+                      Drop="JobList_OnDrop" AllowDrop="True">
 
                 <DataGrid.InputBindings>
                     <MouseBinding

VECTO3GUI/Views/JoblistView.xaml.cs

@@ -33,10 +33,28 @@ namespace VECTO3GUI.Views
 
 		private void AutoScroll(object sender, NotifyCollectionChangedEventArgs e)
 		{
-			if (MessageList.Items.Count > 0) {
-				var border = VisualTreeHelper.GetChild(MessageList, 0) as Decorator;
-				var scroll = border?.Child as ScrollViewer;
-				scroll?.ScrollToEnd();
+			if (MessageList.Items.Count <= 0) {
+				return;
+			}
+
+			var border = VisualTreeHelper.GetChild(MessageList, 0) as Decorator;
+			var scroll = border?.Child as ScrollViewer;
+			scroll?.ScrollToEnd();
+		}
+
+		private void JobList_OnDrop(object sender, DragEventArgs e)
+		{
+			if (!e.Data.GetDataPresent(DataFormats.FileDrop)) {
+				return;
+			}
+
+			var files = (string[])e.Data.GetData(DataFormats.FileDrop);
+			if (files == null) {
+				return;
+			}
+			var vm = (IJoblistViewModel)DataContext;
+			foreach (var file in files) {
+				vm.HandleFileOpen(file);
 			}
 		}
 	}