Add project files.

2022-11-01 15:26:08 +00:00
parent daa7b59f22
commit 7e4f880821
408 changed files with 16863 additions and 0 deletions
@@ -0,0 +1,95 @@
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Media.Animation;
+
+namespace TheXamlGuy.UI.WPF.Controls;
+
+public class Countdown : Control
+{
+    public static readonly DependencyProperty CountdownIdentifierProperty =
+        DependencyProperty.Register(nameof(CountdownIdentifier),
+            typeof(CountdownIdentifier), typeof(Countdown));
+
+    private Storyboard? completingTransition;
+    private VisualStateGroup? countdownGroup;
+    private bool isTransitioning;
+
+    public Countdown()
+    {
+        DefaultStyleKey = typeof(Countdown);
+    }
+
+    public event TypedEventHandler<Countdown, CountdownCompletedEventArgs>? Completed;
+
+    public event TypedEventHandler<Countdown, CountdownStartedEventArgs>? Started;
+
+    public CountdownIdentifier CountdownIdentifier
+    {
+        get => (CountdownIdentifier)GetValue(CountdownIdentifierProperty);
+        set => SetValue(CountdownIdentifierProperty, value);
+    }
+
+    private Storyboard? CompletingTransition
+    {
+        get => completingTransition;
+        set
+        {
+            if (completingTransition is not null)
+            {
+                CompletingTransition!.Completed -= OnTransitionCompleted;
+            }
+
+            completingTransition = value;
+
+            if (completingTransition is not null)
+            {
+                CompletingTransition!.Completed += OnTransitionCompleted;
+            }
+        }
+    }
+
+    public override void OnApplyTemplate()
+    {
+        if (GetTemplateChild("Container") is Grid container)
+        {
+            countdownGroup = ((IEnumerable<VisualStateGroup>)VisualStateManager.GetVisualStateGroups(container))!.FirstOrDefault(x => x.Name == "CountdownStates");
+        }
+    }
+
+    public void Start()
+    {
+        if (isTransitioning)
+        {
+            return;
+        }
+
+        Started?.Invoke(this, new CountdownStartedEventArgs());
+
+        isTransitioning = true;
+        CompletingTransition = GetTransitionStoryboardByName($"{CountdownIdentifier}");
+        VisualStateManager.GoToState(this, $"{CountdownIdentifier}", true);
+    }
+
+    private Storyboard GetTransitionStoryboardByName(string transitionName)
+    {
+        if (countdownGroup is not null)
+        {
+            if (((IEnumerable<VisualState>)countdownGroup.States).Where(x => x.Name == transitionName).Select(x => x.Storyboard).FirstOrDefault() is Storyboard transition)
+            {
+                return transition;
+            }
+        }
+
+        return new Storyboard();
+    }
+
+    private void OnTransitionCompleted(object? sender, EventArgs args)
+    {
+        CompletingTransition!.Completed -= OnTransitionCompleted;
+        VisualStateManager.GoToState(this, "Pending", false);
+
+        isTransitioning = false;
+
+        Completed?.Invoke(this, new CountdownCompletedEventArgs());
+    }
+}