protected override void SelectOnly(DragTreeViewItem item)
{
base.SelectOnly(item);
var node = item.DataContext as IOutlineNode;
var surface = node.DesignItem.View.TryFindParent<DesignSurface>();
if (surface != null)
surface.ScrollIntoView(node.DesignItem);
}
internal void ItemAttached(DragTreeViewItem item)
{
if (item.IsSelected) Selection.Add(item);
}
internal void ItemMouseUp(DragTreeViewItem item)
{
if (upSelection == item) {
SelectOnly(item);
}
upSelection = null;
}
void Select(DragTreeViewItem item)
{
Selection.Add(item);
item.IsSelected = true;
OnSelectionChanged();
}
public virtual bool ShouldItemBeVisible(DragTreeViewItem dragTreeViewitem)
{
return true;
}
protected virtual void Insert(DragTreeViewItem target, DragTreeViewItem[] items, DragTreeViewItem after, bool copy)
{
}
protected virtual void SelectOnly(DragTreeViewItem item)
{
ClearSelection();
Select(item);
OnSelectionChanged();
}
void Select(DragTreeViewItem item)
{
Selection.Add(item);
item.IsSelected = true;
OnSelectionChanged();
}
protected override bool CanInsert(DragTreeViewItem target, DragTreeViewItem[] items, DragTreeViewItem after, bool copy)
{
UpdateCustomNodes(items);
return((target.DataContext as IOutlineNode).CanInsert(_customOutlineNodes,
after == null ? null : after.DataContext as IOutlineNode, copy));
}
public virtual bool ShouldItemBeVisible(DragTreeViewItem dragTreeViewitem)
{
return(true);
}
protected virtual void Remove(DragTreeViewItem target, DragTreeViewItem item)
{
}
protected virtual void Insert(DragTreeViewItem target, DragTreeViewItem[] items, DragTreeViewItem after, bool copy)
{
}
protected virtual bool CanInsert(DragTreeViewItem target, DragTreeViewItem[] items, DragTreeViewItem after, bool copy)
{
return(true);
}
protected virtual void SelectOnly(DragTreeViewItem item)
{
ClearSelection();
Select(item);
OnSelectionChanged();
}
void Unselect(DragTreeViewItem item)
{
Selection.Remove(item);
item.IsSelected = false;
OnSelectionChanged();
}
internal void ItemDetached(DragTreeViewItem item)
{
if (item.IsSelected) Selection.Remove(item);
}
internal void ItemIsSelectedChanged(DragTreeViewItem item)
{
if (item.IsSelected) {
Selection.Add(item);
}
else {
Selection.Remove(item);
}
}
public override bool ShouldItemBeVisible(DragTreeViewItem dragTreeViewitem)
{
var node = dragTreeViewitem.DataContext as IOutlineNode;
return string.IsNullOrEmpty(Filter) || node.Name.ToLower().Contains(Filter.ToLower());
}
void Unselect(DragTreeViewItem item)
{
Selection.Remove(item);
item.IsSelected = false;
OnSelectionChanged();
}
public override bool ShouldItemBeVisible(DragTreeViewItem dragTreeViewitem)
{
var node = dragTreeViewitem.DataContext as IOutlineNode;
return string.IsNullOrEmpty(Filter) || node.DesignItem.Services.GetService<IOutlineNodeNameService>().GetOutlineNodeName(node.DesignItem).ToLower().Contains(Filter.ToLower());
}
protected virtual bool CanInsert(DragTreeViewItem target, DragTreeViewItem[] items, DragTreeViewItem after, bool copy)
{
return true;
}
void PrepareDropInfo(DragEventArgs e)
{
dropTarget = null;
dropAfter = null;
treeItem = (e.OriginalSource as DependencyObject).GetVisualAncestors().OfType<DragTreeViewItem>().FirstOrDefault();
if (treeItem != null) {
var parent = ItemsControl.ItemsControlFromItemContainer(treeItem) as DragTreeViewItem;
ContentPresenter header = treeItem.HeaderPresenter;
Point p = e.GetPosition(header);
part = (int)(p.Y / (header.ActualHeight / 3));
dropCopy = Keyboard.IsKeyDown(Key.LeftCtrl);
dropInside = false;
if (part == 1 || parent == null) {
dropTarget = treeItem;
dropInside = true;
if (treeItem.Items.Count > 0) {
dropAfter = treeItem.ItemContainerGenerator.ContainerFromIndex(treeItem.Items.Count - 1) as DragTreeViewItem;
}
}
else if (part == 0) {
dropTarget = parent;
var index = dropTarget.ItemContainerGenerator.IndexFromContainer(treeItem);
if (index > 0) {
dropAfter = dropTarget.ItemContainerGenerator.ContainerFromIndex(index - 1) as DragTreeViewItem;
}
}
else {
dropTarget = parent;
dropAfter = treeItem;
}
}
}
protected virtual void Remove(DragTreeViewItem target, DragTreeViewItem item)
{
}
internal void ItemMouseDown(DragTreeViewItem item)
{
upSelection = null;
bool control = Keyboard.IsKeyDown(Key.LeftCtrl);
if (Selection.Contains(item)) {
if (control) {
Unselect(item);
}
else {
upSelection = item;
}
}
else {
if (control) {
Select(item);
}
else {
SelectOnly(item);
}
}
}
protected override void Insert(DragTreeViewItem target, DragTreeViewItem[] items, DragTreeViewItem after, bool copy)
{
UpdateCustomNodes(items);
(target.DataContext as OutlineNode).Insert(_customOutlineNodes,
after == null ? null : after.DataContext as OutlineNode, copy);
}
public override bool ShouldItemBeVisible(DragTreeViewItem dragTreeViewitem)
{
var node = dragTreeViewitem.DataContext as IOutlineNode;
return(string.IsNullOrEmpty(Filter) || node.Name.ToLower().Contains(Filter.ToLower()));
}
