/// <summary>
/// Returns the current view (activity) as a list of .NET objects.
/// </summary>
/// <typeparam name="TViewModel">The type of the ViewModel associated to the activity.</typeparam>
/// <param name="bindingActivity">The current activity we want to get as a list of XML elements.</param>
/// <returns>A list of .NET objects which composed the view.</returns>
private static List <View> GetViewAsObjects <TViewModel>(ActivityBase <TViewModel> bindingActivity) where TViewModel : IControllerBase
{
// Get the objects on the view
var rootView = bindingActivity.Window.DecorView.FindViewById(Android.Resource.Id.Content);
return(GetAllChildrenInView(rootView, true));
}
/// <summary>
/// Returns the current view (activity) as a list of XML element.
/// </summary>
/// <typeparam name="TViewModel">The type of the ViewModel associated to the activity.</typeparam>
/// <param name="bindingActivity">The current activity we want to get as a list of XML elements.</param>
/// <param name="viewLayoutResourceId">The id corresponding to the layout.</param>
/// <returns>A list of XML elements which represent the XML layout of the view.</returns>
private static List <XElement> GetViewAsXmlElements <TViewModel>(ActivityBase <TViewModel> bindingActivity, int viewLayoutResourceId) where TViewModel : IControllerBase
{
List <XElement> xmlElements;
using (var viewAsXmlReader = bindingActivity.Resources.GetLayout(viewLayoutResourceId))
{
using (var sb = new StringBuilder())
{
while (viewAsXmlReader.Read())
{
sb.Append(viewAsXmlReader.ReadOuterXml());
}
var viewAsXDocument = XDocument.Parse(sb.ToString());
xmlElements = viewAsXDocument.Descendants().ToList();
}
}
return(xmlElements);
}
public static IEnumerable <Binding> BindXml <TViewModel>(ActivityBase <TViewModel> bindingActivity, IControllerBase source) where TViewModel : IControllerBase
{
var bindings = new List <Binding>();
List <View> viewElements = null;
List <XElement> xmlElements = null;
// Find the value of the ViewLayoutResourceId property
var viewLayoutResourceIdProperty = bindingActivity.GetType().GetProperty(ViewLayoutResourceIdPropertyName);
var viewLayoutResourceId = (int)viewLayoutResourceIdProperty.GetValue(bindingActivity);
if (viewLayoutResourceId > -1)
{
// Load the XML elements of the view
xmlElements = GetViewAsXmlElements(bindingActivity, viewLayoutResourceId);
}
// If there is at least one 'Binding' attribute set in the XML file, get the view as objects
if (xmlElements != null && xmlElements.Any(xe => xe.Attribute(BindingOperationXmlNamespace) != null))
{
viewElements = GetViewAsObjects(bindingActivity);
}
if (xmlElements != null && xmlElements.Any() && viewElements != null && viewElements.Any())
{
// Get all the binding operations inside the XML file.
var bindingOperations = ExtractBindingOperationsFromLayoutFile(xmlElements, viewElements, source);
if (bindingOperations != null && bindingOperations.Any())
{
foreach (var bindingOperation in bindingOperations)
{
bindings.Add(BindInternal(bindingOperation, null));
}
}
}
return(bindings);
}
