Custom control acting as Page allowing children in XAML - wpf

Question

I actually have two questions:
How do I modify a custom control that inherits from a FrameworkElement that only holds one child (e.g. Page or ContentControl) so that it holds multiple children (like a Panel)? Can this be done from the class definition?
How do I bind the children of a custom control to a Panel object (e.g WrapPanel) defined in the template of the custom control?
I'm not even sure if it is possible, but I want to create a custom control that behaves like a Page, or may even inherit from Page, but allows me to enter in children in XAML. For example, I would like the XAML for generating my custom control to look like this:
<CustomPage CustomAttribute="blah">
<TextBox/>
<TextBlock Text="hehe"/>
<Label Content="ha!"/>
</CustomPage>
I want to define in the style that a WrapPanel displays the children. Something like this:
<Style TargetType="{x:Type CustomPage}">
<Style.Setters>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type CustomPage}">
<WrapPanel/>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style.Setters>
</Style>
I would replace the WrapPanel with a ContentPresenter except that I want the ContentPresenter to behave like a WrapPanel.
I hope this is specific enough.

Answer 1

You can actually do exactly what you want already with an ItemsControl.
<ItemsControl>
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<WrapPanel/>
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.Items>
<TextBox/>
<TextBlock Text="hehe"/>
<Label Content="ha!"/>
</ItemsControl.Items>
</ItemsControl>
Hope that helps
EDIT: You can use the above ItemsControl as the root element in a page to gain the page's functionality.

Answer 2

Thank you, Murkaeus. You got me going in the right direction.
In the end, I created a custom control that inherited from Page, defining a ContentProperty for it. This apparently overrides the ContentProperty of the base class. And this works for any control type, too. Here is my code:
[ContentProperty("Children")]
class CustomPage : System.Windows.Controls.Page
{
ObservableCollection<UIElement> children = new ObservableCollection<UIElement>();
public ObservableCollection<UIElement> Children { get { return children; } set { children = value; } }
}
Then I defined the template for my control in the Themes/Generic.xaml file with an ItemsControl using my custom ContentProperty as a source:
<Style TargetType="local:CustomPage">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate>
<ItemsControl ItemsSource="{Binding Children,
RelativeSource={RelativeSource TemplatedParent}}">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<WrapPanel/>
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
</ItemsControl>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
I hope this helps anyone else who is looking for a solution to the same problem. And thank you again, Murkaeus, for your help!
EDIT: I should warn everyone that if you use this method, all your data bindings are lost for some reason, I discovered this with further experimentation. I ended up giving up and just specifying a panel as the child of my custom page object.