public void ValidateChildRemovedFromParentWhenOwnerIsDifferent()
{
RunOnUIThread.Execute(() =>
{
var element = new Button();
const string key1 = "Key1";
const string key2 = "Key2";
RecyclePool pool = new RecyclePool();
var parent1 = new StackPanel();
var child1 = new Button();
var child2 = new Button();
parent1.Children.Add(child1);
parent1.Children.Add(child2);
pool.PutElement(child1, key1, parent1);
pool.PutElement(child2, key2, parent1);
var parent2 = new StackPanel();
// Recycle the second child for a different parent. It should be disconnected
var recycled1 = (FrameworkElement)pool.TryGetElement(key2, parent2);
Verify.IsNull(recycled1.Parent);
var recycled2 = (FrameworkElement)pool.TryGetElement(key1, parent2);
Verify.IsNull(recycled2.Parent);
});
}
public void ValidateOwnershipWithStackPanel()
{
RunOnUIThread.Execute(() =>
{
RecyclePool pool = new RecyclePool();
var owner = new StackPanel();
var child = new Button();
owner.Children.Add(child);
pool.PutElement(child, "Key", owner);
var recycled = pool.TryGetElement("Key", owner);
Verify.AreSame(child, recycled);
Verify.AreEqual(0, owner.Children.IndexOf(child));
});
}
public void ValidateElementsHaveCorrectKeys()
{
RunOnUIThread.Execute(() =>
{
var element = new Button();
const string buttonKey = "ButtonKey";
const string textBlockKey = "TextBlockKey";
const string stackPanelKey = "StackPanelKey";
RecyclePool pool = new RecyclePool();
pool.PutElement(new Button(), buttonKey);
pool.PutElement(new TextBlock(), textBlockKey);
pool.PutElement(new StackPanel(), stackPanelKey);
pool.PutElement(new Button(), buttonKey);
pool.PutElement(new TextBlock(), textBlockKey);
pool.PutElement(new StackPanel(), stackPanelKey);
pool.PutElement(new Button(), buttonKey);
pool.PutElement(new TextBlock(), textBlockKey);
pool.PutElement(new StackPanel(), stackPanelKey);
Verify.IsNotNull((Button)pool.TryGetElement(buttonKey));
Verify.IsNotNull((Button)pool.TryGetElement(buttonKey));
Verify.IsNotNull((Button)pool.TryGetElement(buttonKey));
Verify.IsNull(pool.TryGetElement(buttonKey));
Verify.IsNotNull((TextBlock)pool.TryGetElement(textBlockKey));
Verify.IsNotNull((TextBlock)pool.TryGetElement(textBlockKey));
Verify.IsNotNull((TextBlock)pool.TryGetElement(textBlockKey));
Verify.IsNull(pool.TryGetElement(textBlockKey));
Verify.IsNotNull((StackPanel)pool.TryGetElement(stackPanelKey));
Verify.IsNotNull((StackPanel)pool.TryGetElement(stackPanelKey));
Verify.IsNotNull((StackPanel)pool.TryGetElement(stackPanelKey));
Verify.IsNull(pool.TryGetElement(stackPanelKey));
Verify.Throws <COMException>(delegate
{
pool.PutElement(new Button(), null, null);
});
Verify.Throws <COMException>(delegate
{
pool.PutElement(new Button(), buttonKey, new Button() /* not a panel */);
});
Verify.Throws <COMException>(delegate
{
pool.TryGetElement(null, null);
});
});
}