diff --git a/ListViewEx.cs b/ListViewEx.cs
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+//! \file ListViewEx.cs
+//! \date Thu Jul 24 02:19:38 2014
+//! \brief Extended ListView with explorer-like multiple items selection.
+//
+// Copyright (C) 2014 by morkt
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//
+
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Input;
+using System.Collections;
+using System.Diagnostics;
+using System.Linq;
+
+namespace GARbro.GUI
+{
+ ///
+ /// This Extended ListView allows selecting multiple items by dragging mouse over them.
+ ///
+ public class ListViewEx : ListView
+ {
+ public bool SelectionActive { get; set; }
+ public ListViewItem LastSelectedItem { get; set; }
+
+ public ListViewEx ()
+ {
+ }
+
+ protected override DependencyObject GetContainerForItemOverride()
+ {
+ return new ListViewItemEx();
+ }
+
+ protected override void OnMouseLeftButtonDown (MouseButtonEventArgs e)
+ {
+ if (0 == (Keyboard.Modifiers & (ModifierKeys.Control | ModifierKeys.Shift)))
+ {
+ StartDragSelect();
+ }
+ base.OnMouseLeftButtonDown (e);
+ }
+
+ protected override void OnMouseLeftButtonUp (MouseButtonEventArgs e)
+ {
+ if (SelectionActive)
+ {
+ EndDragSelect();
+ }
+ base.OnMouseLeftButtonUp (e);
+ }
+
+ protected override void OnMouseLeave (MouseEventArgs e)
+ {
+ if (SelectionActive)
+ {
+ EndDragSelect();
+ }
+ base.OnMouseLeave (e);
+ }
+
+ protected override void OnItemsSourceChanged (IEnumerable oldValue, IEnumerable newValue)
+ {
+ if (SelectionActive)
+ {
+ EndDragSelect();
+ }
+ base.OnItemsSourceChanged (oldValue, newValue);
+ }
+
+ internal void StartDragSelect ()
+ {
+ SelectionActive = true;
+ SelectedItems.Clear();
+ }
+
+ internal void EndDragSelect ()
+ {
+ SelectionActive = false;
+ LastSelectedItem = null;
+ }
+
+ internal void ContinueDragSelect (ListViewItem addition)
+ {
+ if (null != LastSelectedItem)
+ {
+ int start = ItemContainerGenerator.IndexFromContainer (LastSelectedItem);
+ int end = ItemContainerGenerator.IndexFromContainer (addition);
+ if (start != -1 && end != -1)
+ {
+ if (start > end)
+ {
+ int index = start;
+ start = end;
+ end = index;
+ }
+ // for each item in the range [start, end]
+ foreach (var item in Items.Cast