Changeset 5702

Timestamp:

03/16/11 01:08:19 (14 years ago)

Author:

swagner

Message:

Implemented dragging of multiple items in RunCollectionView (#1112)

File:

• trunk/sources/HeuristicLab.Optimization.Views/3.3/RunCollectionView.cs (modified) (3 diffs)

trunk/sources/HeuristicLab.Optimization.Views/3.3/RunCollectionView.cs

@@ -263 +263 @@
     private void itemsListView_ItemDrag(object sender, ItemDragEventArgs e) {
       if (!Locked) {
-        ListViewItem listViewItem = (ListViewItem)e.Item;
-        IRun item = listViewItem.Tag as IRun;
-        if (item != null) {
+        List<IRun> items = new List<IRun>();
+        foreach (ListViewItem listViewItem in itemsListView.SelectedItems) {
+          IRun item = listViewItem.Tag as IRun;
+          if (item != null) items.Add(item);
+        }
+
+        if (items.Count > 0) {
           DataObject data = new DataObject();
-          data.SetData("Type", item.GetType());
-          data.SetData("Value", item);
+          if (items.Count == 1) {
+            data.SetData("Type", items[0].GetType());
+            data.SetData("Value", items[0]);
+          } else {
+            data.SetData("Type", typeof(IEnumerable<IRun>));
+            data.SetData("Value", items);
+          }
           if (Content.IsReadOnly || ReadOnly) {
             DoDragDrop(data, DragDropEffects.Copy | DragDropEffects.Link);
           } else {
             DragDropEffects result = DoDragDrop(data, DragDropEffects.Copy | DragDropEffects.Link | DragDropEffects.Move);
-            if ((result & DragDropEffects.Move) == DragDropEffects.Move)
-              Content.Remove(item);
+            if ((result & DragDropEffects.Move) == DragDropEffects.Move) {
+              foreach (IRun item in items) Content.Remove(item);
+            }
           }
         }
@@ -282 +292 @@
       e.Effect = DragDropEffects.None;
       Type type = e.Data.GetData("Type") as Type;
-      if (!Content.IsReadOnly && !ReadOnly && (type != null) && (typeof(IRun).IsAssignableFrom(type))) {
+      if (!Content.IsReadOnly && !ReadOnly && (type != null) && (typeof(IRun).IsAssignableFrom(type) || typeof(IEnumerable<IRun>).IsAssignableFrom(type))) {
         if ((e.KeyState & 32) == 32) e.Effect = DragDropEffects.Link;  // ALT key
         else if ((e.KeyState & 4) == 4) e.Effect = DragDropEffects.Move;  // SHIFT key
@@ -292 +302 @@
     private void itemsListView_DragDrop(object sender, DragEventArgs e) {
       if (e.Effect != DragDropEffects.None) {
-        IRun item = e.Data.GetData("Value") as IRun;
-        if ((e.Effect & DragDropEffects.Copy) == DragDropEffects.Copy) item = (IRun)item.Clone();
-        Content.Add(item);
+        object value = e.Data.GetData("Value");
+        IEnumerable<IRun> items = Enumerable.Empty<IRun>();
+        if (value is IRun)
+          items = new IRun[] { (IRun)value };
+        else if (value is IEnumerable<IRun>)
+          items = (IEnumerable<IRun>)value;
+
+        foreach (IRun item in items) {
+          if ((e.Effect & DragDropEffects.Copy) == DragDropEffects.Copy) Content.Add((IRun)item.Clone());
+          else Content.Add(item);
+        }
       }
     }