public void ResolverShouldRegisterAndResolveDynamicObjectTarget()
{
string name = BindingServiceProvider.ResourceResolver.RootElementResourceName;
var visualTreeManagerMock = new VisualTreeManagerMock();
BindingServiceProvider.VisualTreeManager = visualTreeManagerMock;
var rootMember = AttachedBindingMember.CreateAutoProperty <object, object>("root");
visualTreeManagerMock.GetRootMember = type => rootMember;
var target = new object();
rootMember.SetValue(target, target);
var dataContext = new DataContext
{
{ BindingBuilderConstants.Target, target }
};
var resolver = CreateBindingResourceResolver();
bool isInvoked = false;
var value = resolver.ResolveObject(name, dataContext, false);
value.Value.ShouldEqual(target);
value.ValueChanged += (sender, args) => isInvoked = true;
rootMember.SetValue(target, name);
value.Value.ShouldEqual(name);
isInvoked.ShouldBeTrue();
}
public void ManagerShouldRaiseEventWhenParentChanged()
{
bool contextChanged = false;
var context = new object();
IEventListener eventListener = null;
var memberMock = new BindingMemberInfoMock
{
TryObserveMember = (o, listener) =>
{
eventListener = listener;
return(null);
}
};
var managerMock = new VisualTreeManagerMock
{
FindParent = o => null,
GetParentMember = type =>
{
type.ShouldEqual(context.GetType());
return(memberMock);
}
};
var manager = CreateContextManager(managerMock);
var bindingContext = manager.GetBindingContext(context);
bindingContext.ValueChanged += (sender, args) => contextChanged = true;
eventListener.ShouldNotBeNull();
eventListener.Handle(this, EventArgs.Empty);
contextChanged.ShouldBeTrue();
}
public void ManagerShouldRaiseEventWhenDataContextChangedNotExplicit()
{
bool contextChanged = false;
var context = new object();
var managerMock = new VisualTreeManagerMock
{
FindParent = o => null,
GetParentMember = type => null
};
var manager = CreateContextManager(managerMock);
var bindingContext = manager.GetBindingContext(context);
bindingContext.ValueChanged += (sender, args) => contextChanged = true;
bindingContext.Value = context;
contextChanged.ShouldBeTrue();
}
public void ManagerShouldNotUpdateContextWhenParentChangedIfHasValue()
{
bool isFindParentInvoked = false;
var context = new object();
IEventListener eventListener = null;
var memberMock = new BindingMemberInfoMock
{
TryObserveMember = (o, listener) =>
{
eventListener = listener;
return(null);
}
};
var managerMock = new VisualTreeManagerMock
{
FindParent = o =>
{
o.ShouldEqual(context);
isFindParentInvoked = true;
return(null);
},
GetParentMember = type =>
{
type.ShouldEqual(context.GetType());
return(memberMock);
}
};
var manager = CreateContextManager(managerMock);
var bindingContext = manager.GetBindingContext(context);
isFindParentInvoked.ShouldBeTrue();
bindingContext.Value.ShouldBeNull();
isFindParentInvoked = false;
bindingContext.Value = context;
eventListener.ShouldNotBeNull();
eventListener.Handle(this, EventArgs.Empty);
isFindParentInvoked.ShouldBeFalse();
}
public void ManagerShouldUseParentBindingContextIfItHasNotExplicit()
{
bool isFindParentInvoked = false;
bool isObserveParentInvoked = false;
var context = new object();
var memberMock = new BindingMemberInfoMock
{
TryObserveMember = (o, listener) =>
{
o.ShouldEqual(context);
isObserveParentInvoked = true;
return(null);
}
};
var managerMock = new VisualTreeManagerMock
{
FindParent = o =>
{
o.ShouldEqual(context);
isFindParentInvoked = true;
return(null);
},
GetParentMember = type =>
{
type.ShouldEqual(context.GetType());
return(memberMock);
}
};
var manager = CreateContextManager(managerMock);
var bindingContext = manager.GetBindingContext(context);
isFindParentInvoked.ShouldBeTrue();
isObserveParentInvoked.ShouldBeTrue();
bindingContext.Value.ShouldBeNull();
}
public void ResolverShouldResolveRootMember()
{
string name = BindingServiceProvider.ResourceResolver.RootElementResourceName;
var visualTreeManagerMock = new VisualTreeManagerMock();
BindingServiceProvider.VisualTreeManager = visualTreeManagerMock;
var rootMember = AttachedBindingMember.CreateAutoProperty <object, object>(name);
visualTreeManagerMock.GetRootMember = type => rootMember;
var target = new object();
var dataContext = new DataContext
{
{ BindingBuilderConstants.Target, target }
};
var resolver = CreateBindingResourceResolver();
var value = resolver.ResolveObject(name, dataContext, false);
value.Value.ShouldBeNull();
rootMember.SetValue(target, target);
value.Value.ShouldEqual(target);
}