public static IEnumerable <DependencyObject> Child(this DependencyObject dependencyObject, DependencyObject exclude = null)
{
foreach (var item in LogicalTreeHelper.GetChildren(dependencyObject).OfType <DependencyObject>())
{
if (item != exclude)
{
yield return(item);
}
}
foreach (var item in LogicalTreeHelper.GetChildren(dependencyObject).OfType <DependencyObject>())
{
if (item != exclude)
{
foreach (var result in item.Child())
{
yield return(result);
}
}
}
}
/// <summary>
/// Evaluate the HasLoadedChangeHandler flag on the given node by
/// querying its children, and styles, and templates.
/// </summary>
/// <param name="fo">
/// Node
/// </param>
private static bool AreThereLoadedChangeHandlersInSubtree(ref FrameworkObject fo)
{
// HasHandler flag can be evaluated only for a FE/FCE.
if (!fo.IsValid)
{
return(false);
}
if (fo.ThisHasLoadedChangeEventHandler)
{
return(true);
}
if (fo.IsFE)
{
// Check if any of your visual children have the flag set
Visual v = (Visual)fo.FE;
int count = VisualTreeHelper.GetChildrenCount(v);
for (int i = 0; i < count; i++)
{
FrameworkElement child = VisualTreeHelper.GetChild(v, i) as FrameworkElement;
if (child != null && child.SubtreeHasLoadedChangeHandler)
{
return(true);
}
}
}
// Check if any of your logical children have the flag set
foreach (object o in LogicalTreeHelper.GetChildren(fo.DO))
{
DependencyObject child = o as DependencyObject;
if (null != child && SubtreeHasLoadedChangeHandlerHelper(child))
{
return(true);
}
}
return(false);
}
private bool isChildOf(IChangeNotifer ch, DO p)
{
if (ch is DO dch)
{
if (H.GetParent(dch) == p)
{
return(true);
}
child.MODIFIED -= reset; isTracking = false;
return(false);
}
var chs = H.GetChildren(p);
foreach (var c in chs)
{
if (c == ch)
{
return(true);
}
}
child.MODIFIED -= reset; isTracking = false;
return(false);
}
private void bind(FE parent, int dl = 0)
{
if (parent == null || dl > searchDepth)
{
return;
}
var chs = H.GetChildren(parent);
foreach (object ch in chs)
{
if (ch is UIReseter r && r != this)
{
throw new Exception($@"There's overlapping ""{nameof(UIReseter)}"" instance in the tree. Use single global instance of check ""{nameof(UIReseter.searchDepth)}"" levels.");
}
if (ch is IChangeNotifer sc)
{
trackObject(sc, parent);
}
else
{
bind(ch as FE, ++dl);
}
}
}
public static IEnumerable <DependencyObject> GetLogicalChilds([CanBeNull] this DependencyObject obj) => obj is null
? Enumerable.Empty <DependencyObject>()
: LogicalTreeHelper.GetChildren(obj).OfType <DependencyObject>();
public void CreateFriendsList()
{
var friend_list = MainWindow.api.Friends.Get(new FriendsGetParams
{
Order = FriendsOrder.Hints,
Fields = ProfileFields.FirstName | ProfileFields.Photo50,
Count = 6000,
NameCase = NameCase.Nom,
});
/*_ = Dispatcher.BeginInvoke(DispatcherPriority.Render, new ThreadStart(delegate
* {
* FullFriendList.Items.Add(MainWindow.api.Account.GetProfileInfo().FirstName + ' ' + MainWindow.api.Account.GetProfileInfo().LastName + " ID:" + MainWindow.api.UserId);
* }));*/
int friendnum = 0;
foreach (var friend in friend_list)
{
using (WebClient webClient = new WebClient())
{
try
{
webClient.DownloadFile(friend.Photo50.AbsoluteUri, (Path.Combine(Environment.CurrentDirectory, "Friendava" + friendnum.ToString() + ".jpg")));
}
catch { }
}
Dispatcher.BeginInvoke(new ThreadStart(delegate {
ListBoxItem itemfriend = new ListBoxItem(); itemfriend.Name = "frienditem" + friendnum.ToString();
StackPanel itemstack = new StackPanel(); itemstack.Name = "friendstack" + friendnum.ToString();
Grid itemgrid = new Grid(); for (int i = 0; i < 8; i++)
{
itemgrid.ColumnDefinitions.Add(new ColumnDefinition());
}
for (int i = 0; i < 3; i++)
{
itemgrid.RowDefinitions.Add(new RowDefinition());
}
itemgrid.Name = "friendgrid" + friendnum.ToString();
itemstack.Children.Add(itemgrid);
TextBlock friendinfo = new TextBlock(); friendinfo.Text = " " + friend.FirstName + " " + friend.LastName;
friendinfo.FontSize = 15;
Grid.SetColumn(friendinfo, 5); Grid.SetColumnSpan(friendinfo, 4);
Grid.SetRow(friendinfo, 1); Grid.SetRowSpan(friendinfo, 2);
itemgrid.Children.Add(friendinfo);
itemfriend.Content = itemstack;
itemfriend.Tag = friend.Id;
FullFriendList.Items.Add(itemfriend); FullFriendList.UpdateLayout();
}));
friendnum++;
}
_ = Dispatcher.BeginInvoke(new ThreadStart(delegate
{
int num = 0;
System.Collections.IEnumerable nodes = LTH.GetChildren(FullFriendList);
foreach (var node in nodes)
{
//MessageBox.Show(node.GetType().ToString());
if (node is string)
{
continue;
}
Visual listitem = (Visual)node;
System.Collections.IEnumerable items = LTH.GetChildren(listitem);
foreach (var item in items)
{
if (item is StackPanel)
{
Grid frgr = VTH.GetChild(item as DependencyObject, 0) as Grid;
ImageBrush friendava = new ImageBrush();
BitmapImage friendbit = new BitmapImage(new Uri(Path.Combine(Environment.CurrentDirectory, "Friendava" + num.ToString() + ".jpg")));
friendava.ImageSource = friendbit;
Ellipse ava = new Ellipse();
ava.Height = 50;
ava.Width = 50;
ava.Fill = friendava;
Grid.SetColumn(ava, 0); Grid.SetColumnSpan(ava, 2);
Grid.SetRow(ava, 0); Grid.SetRowSpan(ava, 3);
frgr.Children.Add(ava);
}
}
num++;
}
}));
}