private static void SelectSingleItem(MultiSelectTreeView treeView, TreeViewItem treeViewItem)
{
// first deselect all items
treeView.DeselectAllItems();
SetIsItemSelected(treeViewItem, true);
SetStartItem(treeView, treeViewItem);
}
private void treeKeyDown(object sender, KeyEventArgs e)
{
if (e.Key == Key.C && Keyboard.Modifiers.HasFlag(ModifierKeys.Control))
{
if (inputData.HasGrepLineSelection)
{
CopyGrepLines();
e.Handled = true;
}
else if (inputData.HasGrepResultSelection)
{
CopyFileNames(true);
e.Handled = true;
}
}
else if (e.Key == Key.A && Keyboard.Modifiers.HasFlag(ModifierKeys.Control))
{
MultiSelectTreeView.SelectAll(treeView);
e.Handled = true;
}
else if (e.Key == Key.Delete)
{
ExcludeLines();
e.Handled = true;
}
}
private static void SelectItems(TreeViewItem treeViewItem, MultiSelectTreeView treeView)
{
if (treeViewItem != null && treeView != null)
{
bool isFunctionKeyDown = Keyboard.IsKeyDown(Key.F1) || Keyboard.IsKeyDown(Key.F2) || Keyboard.IsKeyDown(Key.F3) ||
Keyboard.IsKeyDown(Key.F4) || Keyboard.IsKeyDown(Key.F5) || Keyboard.IsKeyDown(Key.F6) ||
Keyboard.IsKeyDown(Key.F7) || Keyboard.IsKeyDown(Key.F7) || Keyboard.IsKeyDown(Key.F9) ||
Keyboard.IsKeyDown(Key.F10) || Keyboard.IsKeyDown(Key.F11) || Keyboard.IsKeyDown(Key.F12);
if (treeView.MultiSelectRootLevelOnly)
{
bool isRoot = ItemsControl.ItemsControlFromItemContainer(treeViewItem) == treeView;
if (isRoot)
{
treeView.DeselectAllChildItems();
if (Keyboard.Modifiers.HasFlag(ModifierKeys.Control | ModifierKeys.Shift) && !isFunctionKeyDown)
{
SelectMultipleItemsContinuously(treeView, treeViewItem, true);
}
else if (Keyboard.Modifiers.HasFlag(ModifierKeys.Control) && !isFunctionKeyDown)
{
SelectMultipleItemsRandomly(treeView, treeViewItem);
}
else if (Keyboard.Modifiers.HasFlag(ModifierKeys.Shift) && !isFunctionKeyDown)
{
SelectMultipleItemsContinuously(treeView, treeViewItem);
}
else
{
SelectSingleItem(treeView, treeViewItem);
}
}
else
{
SelectSingleItem(treeView, treeViewItem);
}
}
else
{
if (Keyboard.Modifiers.HasFlag(ModifierKeys.Control | ModifierKeys.Shift) && !isFunctionKeyDown)
{
SelectMultipleItemsContinuously(treeView, treeViewItem, true);
}
else if (Keyboard.Modifiers.HasFlag(ModifierKeys.Control) && !isFunctionKeyDown)
{
SelectMultipleItemsRandomly(treeView, treeViewItem);
}
else if (Keyboard.Modifiers.HasFlag(ModifierKeys.Shift) && !isFunctionKeyDown)
{
SelectMultipleItemsContinuously(treeView, treeViewItem);
}
else
{
SelectSingleItem(treeView, treeViewItem);
}
}
}
}
private static void SelectItems(TreeViewItem treeViewItem, MultiSelectTreeView treeView)
{
if (treeViewItem != null && treeView != null)
{
if (treeView.MultiSelectRootLevelOnly)
{
bool isRoot = ItemsControl.ItemsControlFromItemContainer(treeViewItem) == treeView;
if (isRoot)
{
treeView.DeselectAllChildItems();
if ((Keyboard.Modifiers & (ModifierKeys.Control | ModifierKeys.Shift)) == (ModifierKeys.Control | ModifierKeys.Shift))
{
SelectMultipleItemsContinuously(treeView, treeViewItem, true);
}
else if (Keyboard.Modifiers == ModifierKeys.Control)
{
SelectMultipleItemsRandomly(treeView, treeViewItem);
}
else if (Keyboard.Modifiers == ModifierKeys.Shift)
{
SelectMultipleItemsContinuously(treeView, treeViewItem);
}
else
{
SelectSingleItem(treeView, treeViewItem);
}
}
else
{
SelectSingleItem(treeView, treeViewItem);
}
}
else
{
if ((Keyboard.Modifiers & (ModifierKeys.Control | ModifierKeys.Shift)) == (ModifierKeys.Control | ModifierKeys.Shift))
{
SelectMultipleItemsContinuously(treeView, treeViewItem, true);
}
else if (Keyboard.Modifiers == ModifierKeys.Control)
{
SelectMultipleItemsRandomly(treeView, treeViewItem);
}
else if (Keyboard.Modifiers == ModifierKeys.Shift)
{
SelectMultipleItemsContinuously(treeView, treeViewItem);
}
else
{
SelectSingleItem(treeView, treeViewItem);
}
}
}
}
private static void SelectMultipleItemsRandomly(MultiSelectTreeView treeView, TreeViewItem treeViewItem)
{
SetIsItemSelected(treeViewItem, !GetIsItemSelected(treeViewItem));
if (GetStartItem(treeView) == null || Keyboard.Modifiers == ModifierKeys.Control)
{
if (GetIsItemSelected(treeViewItem))
{
SetStartItem(treeView, treeViewItem);
}
}
else if (GetSelectedItems(treeView).Count == 0)
{
SetStartItem(treeView, null);
}
}
private static void SelectMultipleItemsContinuously(MultiSelectTreeView treeView, TreeViewItem treeViewItem, bool shiftControl = false)
{
TreeViewItem startItem = GetStartItem(treeView);
if (startItem != null)
{
if (startItem == treeViewItem)
{
SelectSingleItem(treeView, treeViewItem);
return;
}
bool msRootOnly = treeView.MultiSelectRootLevelOnly;
ICollection <ITreeItem> allItems = new List <ITreeItem>();
GetAllItems(treeView, allItems);
bool isBetween = false;
foreach (var item in allItems)
{
bool isRoot = item.Level == 0;
if (item == treeViewItem.DataContext || item == startItem.DataContext)
{
// toggle to true if first element is found and
// back to false if last element is found
isBetween = !isBetween;
// set boundary element
item.IsSelected = msRootOnly ? isRoot : true;
continue;
}
if (isBetween)
{
item.IsSelected = msRootOnly ? isRoot : true;
continue;
}
if (!shiftControl)
{
item.IsSelected = false;
}
}
}
}
