Table of Contents

Class TriggerAction

Namespace
HeBianGu.Base.WpfBase
Assembly
HeBianGu.Base.WpfBase.dll

Represents an attachable object that encapsulates a unit of functionality.

[DefaultTrigger(typeof(UIElement), typeof(EventTrigger), "MouseLeftButtonDown")]
[DefaultTrigger(typeof(ButtonBase), typeof(EventTrigger), "Click")]
public abstract class TriggerAction : Animatable, IAnimatable, IAttachedObject
Inheritance
TriggerAction
Implements
Derived
Inherited Members
Extension Methods

Remarks

This is an infrastructure class. Action authors should derive from TriggerAction<T> instead of this class.

Fields

IsEnabledProperty 

public static readonly DependencyProperty IsEnabledProperty

Field Value

DependencyProperty

Properties

AssociatedObject

Gets the object to which this action is attached.

protected DependencyObject AssociatedObject { get; }

Property Value

DependencyObject

The associated object.

AssociatedObjectTypeConstraint

Gets the associated object type constraint.

protected virtual Type AssociatedObjectTypeConstraint { get; }

Property Value

Type

The associated object type constraint.

IsEnabled

Gets or sets a value indicating whether this action will run when invoked. This is a dependency property.

public bool IsEnabled { get; set; }

Property Value

bool

True if this action will be run when invoked; otherwise, False.

Methods

Attach(DependencyObject)

Attaches to the specified object.

public void Attach(DependencyObject dependencyObject)

Parameters

dependencyObject DependencyObject

The object to attach to.

Exceptions

InvalidOperationException

Cannot host the same TriggerAction on more than one object at a time.

InvalidOperationException

dependencyObject does not satisfy the TriggerAction type constraint.

CreateInstanceCore()

When implemented in a derived class, creates a new instance of the Freezable derived class.

protected override Freezable CreateInstanceCore()

Returns

Freezable

The new instance.

Detach()

Detaches this instance from its associated object.

public void Detach()

Invoke(object)

Invokes the action.

protected abstract void Invoke(object parameter)

Parameters

parameter object

The parameter to the action. If the action does not require a parameter, the parameter may be set to a null reference.

OnAttached()

Called after the action is attached to an AssociatedObject.

protected virtual void OnAttached()

OnDetaching()

Called when the action is being detached from its AssociatedObject, but before it has actually occurred.

protected virtual void OnDetaching()
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