/// <summary>
/// Gets the <see cref="BehaviorCollection"/> associated with a specified object.
/// </summary>
/// <param name="obj">The object from which to retrieve the <see cref="BehaviorCollection"/>.</param>
/// <returns>A <see cref="BehaviorCollection"/> containing the behaviors associated with the specified object.</returns>
public static BehaviorCollection GetBehaviors(DependencyObject obj)
{
var behaviorCollection = (BehaviorCollection)obj.GetValue(BehaviorsProperty);
if (behaviorCollection == null)
{
#if WINDOWS_PHONE
behaviorCollection = (BehaviorCollection)typeof(BehaviorCollection)
.GetConstructor(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance, null, Type.EmptyTypes, null)
.Invoke(null);
#else
behaviorCollection = new BehaviorCollection();
#endif
obj.SetValue(BehaviorsProperty, behaviorCollection);
obj.SetValue(Interaction.BehaviorsProperty, behaviorCollection);
var frameworkElement = obj as FrameworkElement;
if (frameworkElement != null)
{
frameworkElement.Loaded -= FrameworkElement_Loaded;
frameworkElement.Loaded += FrameworkElement_Loaded;
frameworkElement.Unloaded -= FrameworkElement_Unloaded;
frameworkElement.Unloaded += FrameworkElement_Unloaded;
}
}
return behaviorCollection;
}
/// <summary>
/// Gets the <see cref="BehaviorCollection"/> associated with a specified object.
/// </summary>
/// <param name="obj">The <see cref="Windows.UI.Xaml.DependencyObject"/> from which to retrieve the <see cref="BehaviorCollection"/>.</param>
/// <returns>A <see cref="BehaviorCollection"/> containing the behaviors associated with the specified object.</returns>
public static BehaviorCollection GetBehaviors(DependencyObject obj)
{
if (obj == null)
{
throw new ArgumentNullException("obj");
}
BehaviorCollection behaviorCollection = (BehaviorCollection)obj.GetValue(Interaction.BehaviorsProperty);
if (behaviorCollection == null)
{
behaviorCollection = new BehaviorCollection();
obj.SetValue(Interaction.BehaviorsProperty, behaviorCollection);
var frameworkElement = obj as FrameworkElement;
if (frameworkElement != null)
{
frameworkElement.Loaded -= FrameworkElement_Loaded;
frameworkElement.Loaded += FrameworkElement_Loaded;
frameworkElement.Unloaded -= FrameworkElement_Unloaded;
frameworkElement.Unloaded += FrameworkElement_Unloaded;
}
}
return behaviorCollection;
}
public void VectorChanged_BehaviorChangedToNonBehavior_ExceptionThrown()
{
BehaviorCollection behaviorCollection = new BehaviorCollection();
behaviorCollection.Add(new StubBehavior());
TestUtilities.AssertThrowsException(() => behaviorCollection[0] = new ToggleSwitch());
}
private void ConfigureOrCreateSearchContract( BehaviorCollection behaviors )
{
Contract.Requires( behaviors != null );
if ( !searchOptions.IsValueCreated )
return;
var options = searchOptions.Value;
var searchContract = behaviors.OfType<SearchContractBehavior>().FirstOrDefault();
if ( searchContract == null )
{
searchContract = new SearchContractBehavior();
behaviors.Add( searchContract );
}
searchContract.SearchHistoryEnabled = options.SearchHistoryEnabled;
searchContract.ShowOnKeyboardInput = options.ShowOnKeyboardInput;
if ( !string.IsNullOrEmpty( options.PlaceholderText ) )
searchContract.PlaceholderText = options.PlaceholderText;
if ( !string.IsNullOrEmpty( options.SearchHistoryContext ) )
searchContract.SearchHistoryContext = options.SearchHistoryContext;
}
private void ConfigureOrCreateSettingsContract( BehaviorCollection behaviors )
{
Contract.Requires( behaviors != null );
var settingsContract = behaviors.OfType<SettingsContractBehavior>().FirstOrDefault();
if ( settingsContract == null )
{
settingsContract = new SettingsContractBehavior();
behaviors.Add( settingsContract );
}
foreach ( var appSetting in appSettings )
{
var setting = new ApplicationSetting()
{
Name = appSetting.Item2,
ViewTypeName = appSetting.Item3
};
if ( !string.IsNullOrEmpty( appSetting.Item1 ) )
setting.Id = appSetting.Item1;
settingsContract.ApplicationSettings.Add( setting );
}
}
/// <summary>
/// Gets the <see cref="BehaviorCollection"/> associated with a specified object.
/// </summary>
/// <param name="obj">The <see cref="Windows.UI.Xaml.DependencyObject"/> from which to retrieve the <see cref="BehaviorCollection"/>.</param>
/// <returns>A <see cref="BehaviorCollection"/> containing the behaviors associated with the specified object.</returns>
public static BehaviorCollection GetBehaviors(DependencyObject obj)
{
if (obj == null)
{
throw new ArgumentNullException(nameof(obj));
}
BehaviorCollection behaviorCollection = (BehaviorCollection)obj.GetValue(Interaction.BehaviorsProperty);
if (behaviorCollection == null)
{
behaviorCollection = new BehaviorCollection();
obj.SetValue(Interaction.BehaviorsProperty, behaviorCollection);
var frameworkElement = obj as FrameworkElement;
if (frameworkElement != null)
{
frameworkElement.Loaded -= FrameworkElement_Loaded;
frameworkElement.Loaded += FrameworkElement_Loaded;
frameworkElement.Unloaded -= FrameworkElement_Unloaded;
frameworkElement.Unloaded += FrameworkElement_Unloaded;
}
}
return(behaviorCollection);
}
public void VectorChanged_NonBehaviorAdded_ExceptionThrown()
{
BehaviorCollection behaviorCollection = new BehaviorCollection();
behaviorCollection.Add(new StubBehavior());
TestUtilities.AssertThrowsException(() => behaviorCollection.Add(new TextBlock()));
}
/// <summary>
/// Sets the <see cref="BehaviorCollection"/> associated with a specified object.
/// </summary>
/// <param name="obj">The <see cref="Windows.UI.Xaml.DependencyObject"/> on which to set the <see cref="BehaviorCollection"/>.</param>
/// <param name="value">The <see cref="BehaviorCollection"/> associated with the object.</param>
public static void SetBehaviors(DependencyObject obj, BehaviorCollection value)
{
if (obj == null)
{
throw new ArgumentNullException("obj");
}
obj.SetValue(Interaction.BehaviorsProperty, value);
}
/// <summary>
/// Sets the <see cref="BehaviorCollection"/> associated with a specified object.
/// </summary>
/// <param name="obj">The <see cref="Windows.UI.Xaml.DependencyObject"/> on which to set the <see cref="BehaviorCollection"/>.</param>
/// <param name="value">The <see cref="BehaviorCollection"/> associated with the object.</param>
public static void SetBehaviors(DependencyObject obj, BehaviorCollection value)
{
if (obj == null)
{
throw new ArgumentNullException(nameof(obj));
}
obj.SetValue(Interaction.BehaviorsProperty, value);
}
public void VectorChanged_AddWhileNotAttached_AttachNotCalled()
{
BehaviorCollection behaviorCollection = new BehaviorCollection();
StubBehavior stub = new StubBehavior();
behaviorCollection.Add(stub);
TestUtilities.AssertNotAttached(stub);
}
public void VectorChanged_DuplicateAdd_ExceptionThrown()
{
BehaviorCollection behaviorCollection = new BehaviorCollection();
StubBehavior stub = new StubBehavior();
behaviorCollection.Add(stub);
TestUtilities.AssertThrowsException(() => behaviorCollection.Add(stub));
}
public void SetBehaviors_MultipleSets_DoesNotReattach()
{
BehaviorCollection behaviorCollection = new BehaviorCollection() { new StubBehavior() };
Button button = new Button();
Interaction.SetBehaviors(button, behaviorCollection);
Interaction.SetBehaviors(button, behaviorCollection);
foreach (StubBehavior behavior in behaviorCollection)
{
Assert.AreEqual(1, behavior.AttachCount, "Should only have called Attach once.");
}
}
public void VectorChanged_AddWhileAttached_AllAttached()
{
BehaviorCollection behaviorCollection = new BehaviorCollection();
behaviorCollection.Attach(new Button());
behaviorCollection.Add(new StubBehavior());
behaviorCollection.Add(new StubBehavior());
behaviorCollection.Add(new StubBehavior());
foreach (StubBehavior stub in behaviorCollection)
{
TestUtilities.AssertAttached(stub, behaviorCollection.AssociatedObject);
}
}
public void SetBehaviors_CollectionThenNull_DeatchCollection()
{
BehaviorCollection behaviorCollection = new BehaviorCollection() { new StubBehavior() };
Button button = new Button();
Interaction.SetBehaviors(button, behaviorCollection);
Interaction.SetBehaviors(button, null);
foreach (StubBehavior behavior in behaviorCollection)
{
Assert.AreEqual(1, behavior.DetachCount, "Should only have called Detach once.");
Assert.IsNull(behavior.AssociatedObject, "AssociatedObject should be null after Detach.");
}
}
public void VectorChanged_ReplaceWhileAttached_OldDetachedNewAttached()
{
BehaviorCollection behaviorCollection = new BehaviorCollection();
behaviorCollection.Attach(new Button());
StubBehavior first = new StubBehavior();
behaviorCollection.Add(first);
StubBehavior second = new StubBehavior();
behaviorCollection[0] = second;
TestUtilities.AssertDetached(first);
TestUtilities.AssertAttached(second, behaviorCollection.AssociatedObject);
}
public void SetBehaviors_MultipleBehaviors_AllAttached()
{
BehaviorCollection behaviorCollection = new BehaviorCollection();
behaviorCollection.Add(new StubBehavior());
behaviorCollection.Add(new StubBehavior());
behaviorCollection.Add(new StubBehavior());
Button button = new Button();
Interaction.SetBehaviors(button, behaviorCollection);
foreach (StubBehavior behavior in behaviorCollection)
{
Assert.AreEqual(1, behavior.AttachCount, "Should only have called Attach once.");
Assert.AreEqual(0, behavior.DetachCount, "Should not have called Detach.");
Assert.AreEqual(button, behavior.AssociatedObject, "Should be attached to the host of the BehaviorCollection.");
}
}
private static void OnBehaviorsChanged(DependencyObject sender, DependencyPropertyChangedEventArgs args)
{
BehaviorCollection oldCollection = (BehaviorCollection)args.OldValue;
BehaviorCollection newCollection = (BehaviorCollection)args.NewValue;
if (oldCollection == newCollection)
{
return;
}
if (oldCollection != null && oldCollection.AssociatedObject != null)
{
oldCollection.Detach();
}
if (newCollection != null && sender != null)
{
newCollection.Attach(sender);
}
}
public void SetBehaviors_ManualDetachThenNull_DoesNotDoubleDetach()
{
BehaviorCollection behaviorCollection = new BehaviorCollection();
behaviorCollection.Add(new StubBehavior());
behaviorCollection.Add(new StubBehavior());
behaviorCollection.Add(new StubBehavior());
Button button = new Button();
Interaction.SetBehaviors(button, behaviorCollection);
foreach (StubBehavior behavior in behaviorCollection)
{
behavior.Detach();
}
Interaction.SetBehaviors(button, null);
foreach (StubBehavior behavior in behaviorCollection)
{
Assert.AreEqual(1, behavior.DetachCount, "Setting BehaviorCollection to null should not call Detach on already Detached Behaviors.");
Assert.IsNull(behavior.AssociatedObject, "AssociatedObject should be null after Detach.");
}
}
public void VectorChanged_RemoveWhileAttached_Detached()
{
BehaviorCollection behaviorCollection = new BehaviorCollection();
behaviorCollection.Attach(new ToggleSwitch());
StubBehavior behavior = new StubBehavior();
behaviorCollection.Add(behavior);
behaviorCollection.Remove(behavior);
TestUtilities.AssertDetached(behavior);
}
public void Attach_MultipleBehaviors_AllAttached()
{
BehaviorCollection behaviorCollection = new BehaviorCollection();
behaviorCollection.Add(new StubBehavior());
behaviorCollection.Add(new StubBehavior());
behaviorCollection.Add(new StubBehavior());
Button button = new Button();
behaviorCollection.Attach(button);
Assert.AreEqual(button, behaviorCollection.AssociatedObject, "Attach should set the AssociatedObject to the given parameter.");
foreach (StubBehavior stub in behaviorCollection)
{
TestUtilities.AssertAttached(stub, button);
}
}
public void Attach_Null_AttachNotCalledOnItems()
{
BehaviorCollection behaviorCollection = new BehaviorCollection();
behaviorCollection.Add(new StubBehavior());
behaviorCollection.Add(new StubBehavior());
behaviorCollection.Add(new StubBehavior());
behaviorCollection.Attach(null);
foreach (StubBehavior stub in behaviorCollection)
{
TestUtilities.AssertNotAttached(stub);
}
}
public void Attach_MultipleObjects_ExceptionThrown()
{
BehaviorCollection behaviorCollection = new BehaviorCollection();
StubBehavior stub = new StubBehavior();
behaviorCollection.Attach(new Button());
TestUtilities.AssertThrowsException(() => behaviorCollection.Attach(new StackPanel()));
}
public void Attach_NonNullThenNull_ExceptionThrown()
{
BehaviorCollection behaviorCollection = new BehaviorCollection();
behaviorCollection.Add(new StubBehavior());
behaviorCollection.Attach(new Button());
TestUtilities.AssertThrowsException(() => behaviorCollection.Attach(null));
}
public void Attach_MultipleTimeSameObject_AttachCalledOnce()
{
BehaviorCollection behaviorCollection = new BehaviorCollection() { new StubBehavior() };
Button button = new Button();
behaviorCollection.Attach(button);
behaviorCollection.Attach(button);
// This method hard codes AttachCount == 1.
TestUtilities.AssertAttached((StubBehavior)behaviorCollection[0], button);
}
public void VectorChanged_RemoveWhileNotAttached_DetachNotCalled()
{
BehaviorCollection behaviorCollection = new BehaviorCollection();
StubBehavior behavior = new StubBehavior();
behaviorCollection.Add(behavior);
behaviorCollection.Remove(behavior);
TestUtilities.AssertNotDetached(behavior);
}
public void VectorChanged_ResetWhileAttached_AllDetached()
{
StubBehavior[] behaviorArray = { new StubBehavior(), new StubBehavior(), new StubBehavior() };
BehaviorCollection behaviorCollection = new BehaviorCollection();
behaviorCollection.Attach(new Button());
foreach (StubBehavior behavior in behaviorArray)
{
behaviorCollection.Add(behavior);
}
behaviorCollection.Clear();
foreach (StubBehavior behavior in behaviorArray)
{
TestUtilities.AssertDetached(behavior);
}
}
public void Detach_NotAttached_DetachNotCalledOnItems()
{
BehaviorCollection behaviorCollection = new BehaviorCollection() { new StubBehavior() };
behaviorCollection.Detach();
TestUtilities.AssertNotDetached((StubBehavior)behaviorCollection[0]);
}
public void Detach_Attached_AllItemsDetached()
{
BehaviorCollection behaviorCollection = new BehaviorCollection();
behaviorCollection.Add(new StubBehavior());
behaviorCollection.Add(new StubBehavior());
behaviorCollection.Add(new StubBehavior());
behaviorCollection.Attach(new Button());
behaviorCollection.Detach();
Assert.IsNull(behaviorCollection.AssociatedObject, "The AssociatedObject should be null after Detach.");
foreach (StubBehavior behavior in behaviorCollection)
{
TestUtilities.AssertDetached(behavior);
}
}
