protected override object ResolveImpl(object parent, ref SelectorTreeResolutionContext context)
{
var dataTemplate = parent as DataTemplate;
if (dataTemplate == null)
{
return(null);
}
//var templatedParent = param as FrameworkElement;
//if (templatedParent == null)
// return null;
var templatedParentFrame = context.GetBacktracedFrame(1);
var templatedParent = templatedParentFrame.ResolvedValue as FrameworkElement;
if (templatedParent == null)
{
return(null);
}
var targetObject = dataTemplate.FindName(TargetName, templatedParent);
if (targetObject == null)
{
return(null);
}
return(targetObject);
}
//TODO supporting Parameters and parameter selectors
protected override object ResolveImpl(
object parent,
ref SelectorTreeResolutionContext context)
{
return(parent
.Reflect()
.InvokeMethod <object>(
MemberDescriptor.Any,
MethodName));
}
protected override object ResolveImpl(object parent, ref SelectorTreeResolutionContext context)
{
if (parent == null)
{
//TODO how to handle this?
}
if (PropertyName == "Template" || PropertyName == "ContentTemplate")
{
(parent as FrameworkElement)?.ApplyTemplate();
}
return(parent.GetPropertyValue <object>(PropertyName));
}
protected override object ResolveImpl(
object parent,
ref SelectorTreeResolutionContext context)
{
parent.IsNotNull(nameof(parent));
var frameworkElement = parent.IsOfType <FrameworkElement>();
var resolvedParent = frameworkElement
.FindParent(AncestorType, AncestorLevel);
return(resolvedParent);
}
protected override object ResolveImpl(object parent, ref SelectorTreeResolutionContext context)
{
var list = parent as IList;
if (list == null)
{
throw new NotSupportedException($"ArrayElementSelectors not supported on type \'{parent.GetType().Name}\'. " +
$"Object must be convertable to \'IList\'.");
}
var element = list[ArrayIndex];
return(element);
}
protected override object ResolveImpl(
object parent,
ref SelectorTreeResolutionContext context)
{
var template = context
.RootExecutionContext
.Reflect()
.GetFieldValue <FrameworkTemplate>(
MemberDescriptor.Any,
TemplatePropertyName);
return(template);
}
protected override object ResolveImpl(object parent, ref SelectorTreeResolutionContext context)
{
var listView = context.RootExecutionContext as ListView;
if (listView == null)
{
throw new ReactionExecutionException("Can only execute FindNameInListViewSelector on an ListView.");
}
listView.ApplyTemplate();
var listViewItem = parent as ListViewItem;
if (listViewItem == null)
{
throw new ReactionExecutionException("Parent selector must be a \'ListViewItem\'.");
}
listViewItem.ApplyTemplate();
var currentChild = VisualTreeHelper.GetChild(listViewItem, 0) as ContentPresenter;
if (currentChild == null)
{
throw new ReactionExecutionException(
"The root visual child of the ListViewItem must be of Type \'ContentPresenter\'.");
}
currentChild.ApplyTemplate();
//var targetElement = currentChild.FindName(TargetName);
var targetElement = currentChild.ContentTemplate.FindName(TargetName, currentChild);
if (targetElement == null)
{
throw new ReactionExecutionException(
$"The name \'{TargetName}\' could not be found in the ListViewItem's ContentPresenter.");
}
var targetAnimatable = targetElement as IAnimatable;
if (targetAnimatable == null)
{
throw new ReactionExecutionException(
$"The targeted element with name \'{TargetName}\' must be of type \'IAnimatable\'. " +
$"Actual type \'{targetElement.GetType().Name}\' is not supported.");
}
return(targetAnimatable);
}
protected override object ResolveImpl(object parent, ref SelectorTreeResolutionContext context)
{
var control = parent as Control;
if (control == null)
{
throw new NotSupportedException("Can only execute FindNameInControlTemplateSelector on a Control.");
}
//var frameworkElement = parent as FrameworkElement;
//if(frameworkElement == null)
// throw new NotSupportedException("Parent selector must be FrameworkElement.");
//frameworkElement.ApplyTemplate();
control.ApplyTemplate();
var targetElement = control.Template.FindName(TargetName, control);
return(targetElement);
}
protected override object ResolveImpl(object parent, ref SelectorTreeResolutionContext context)
{
var container = parent as FrameworkElement;
if (container == null)
{
return(null);
}
// TODO check if already applied? is this necessary?
container.ApplyTemplate();
//TODO trycatch index out of bounds
var currentChild = VisualTreeHelper.GetChild(container, ChildIndex);
// as ContentPresenter;
if (currentChild == null)
{
return(null);
}
return(currentChild);
}
protected override object ResolveImpl(object parent, ref SelectorTreeResolutionContext context)
{
var itemsControl = context.RootExecutionContext as ItemsControl;
if (itemsControl == null)
{
throw new NotSupportedException("Can only execute FindNameInItemsControlSelector on an ItemsControl.");
}
var frameworkElement = parent as FrameworkElement;
if (frameworkElement == null)
{
throw new NotSupportedException("Parent selector must be FrameworkElement.");
}
frameworkElement.ApplyTemplate();
itemsControl.ApplyTemplate();
var targetElement = itemsControl.ItemTemplate.FindName(TargetName, frameworkElement);
return(targetElement);
}
protected override object ResolveImpl(object parent, ref SelectorTreeResolutionContext context)
{
return(context.RootExecutionContext);
}
protected override object ResolveImpl(
object parent,
ref SelectorTreeResolutionContext context)
{
return(ParameterValue);
}
