private DataBinding AddBinding(BindingParameters bp)
{
if (bp.View != null && FindBindingForView(bp.View) != null)
{
throw new ArgumentException("Cannot add binding because a binding already exists for the view " + bp.View.ToString());
}
if (dataBindings.ContainsKey(IdName(bp.ViewModelPropertyName)))
{
throw new ArgumentException("Cannot add binding because a binding already exists for the view with Id " + IdName(bp.ViewModelPropertyName));
}
var view = bp.View;
if (view == null)
{
return(null);
}
var viewMemberName = bp.ViewMemberName;
if ((bp.Mode == BindingMode.OneWay || bp.Mode == BindingMode.TwoWay) && bp.UpdateView == null && viewMemberName == null)
{
ViewDefaultPropertyOrFieldName.TryGetValue(view.GetType().FullName, out viewMemberName);
}
var propertyName = bp.ViewModelPropertyName;
var mode = bp.Mode;
var listPropertyName = bp.ListPropertyName;
var itemTemplateName = bp.ListItemTemplateName;
var idName = IdName(propertyName);
var viewModelPropertyInfo = (string.IsNullOrEmpty(propertyName) || propertyName == ".") ? null : viewModel.GetType().GetProperty(propertyName);
var binding = new DataBinding
{
ViewProperty = new PropertyReference(view, viewMemberName, viewModelPropertyInfo != null ? viewModelPropertyInfo.PropertyType : null),
UpdateViewAction = bp.UpdateView,
UpdateViewModelAction = bp.UpdateViewModel,
Mode = mode,
ViewModelPropertyInfo = viewModelPropertyInfo
};
if (listPropertyName == null)
{
listPropertyName = propertyName + "List";
}
var pi = viewModel.GetType().GetProperty(listPropertyName);
if (pi == null && binding.ViewModelPropertyInfo != null && binding.ViewModelPropertyInfo.PropertyType.GetInterface("IList") != null)
{
listPropertyName = propertyName;
pi = binding.ViewModelPropertyInfo;
binding.ViewModelPropertyInfo = null;
}
binding.ViewModelListPropertyInfo = pi;
if (binding.ViewProperty.ContainingObject is UITableView)
{
var tableView = (UITableView)binding.ViewProperty.ContainingObject;
if (tableView.Source != null)
{
binding.TableViewSource = tableView.Source as DataBindableUITableViewSource;
}
else
{
if (itemTemplateName == null)
{
itemTemplateName = listPropertyName + "Item";
}
string listItemSelectedPropertyName = (mode == BindingMode.Command || mode == BindingMode.TwoWay) ? bp.ViewModelPropertyName : null;
tableView.Source = binding.TableViewSource = new DataBindableUITableViewSource(
tableView,
itemTemplateName,
viewModel,
bp.ListCanEditItem,
bp.ListCanMoveItem,
listItemSelectedPropertyName,
bp.ListRemoveItemCommandName,
bp.ListAddItemCommandName,
rootViewExtensionPoints
);
}
}
switch (binding.Mode)
{
case BindingMode.TwoWay: AddTwoWayHandler(binding); break;
case BindingMode.Command: AddCommandHandler(binding); break;
}
dataBindings.Add(idName, binding);
return(binding);
}
private DataBinding AddBinding(BindingParameters bp)
{
object view = bp.View;
View androidView = view as View;
string propertyName = bp.ViewModelPropertyName;
if (string.IsNullOrEmpty(propertyName))
{
throw new ArgumentNullException("ViewModelPropertyName");
}
string idName = IdName(propertyName);
int? resourceId;
if (androidView != null)
{
string viewIdName = AndroidHelpers.FindResourceName(androidView.Id);
if (viewIdName != idName)
{
throw new ArgumentException(string.Format("View Id '{0}' does not match expected value '{1}'; adjust either the view Id or the ViewModelPropertyName binding parameter.", viewIdName, idName));
}
resourceId = androidView.Id;
}
else
{
resourceId = AndroidHelpers.FindResourceId(idName);
}
if (view == null && resourceId.HasValue)
{
view = androidView = rootView.FindViewById(resourceId.Value);
}
if (view == null)
{
return(null);
}
if (androidView != null && androidView.Tag != null)
{
bp = ParseBindingParameters(androidView.Tag.ToString(), bp);
}
string viewMemberName = bp.ViewMemberName;
if ((bp.Mode == BindingMode.OneWay || bp.Mode == BindingMode.TwoWay) && bp.UpdateView == null && viewMemberName == null)
{
ViewDefaultPropertyOrFieldName.TryGetValue(view.GetType().FullName, out viewMemberName);
}
var viewModelPropertyInfo = (string.IsNullOrEmpty(propertyName) || propertyName == ".") ? null : viewModel.GetType().GetProperty(propertyName);
AdapterView commandParameterSelectedItemAdapterView = bp.CommandParameterSelectedItemAdapterView;
if (commandParameterSelectedItemAdapterView == null && bp.ListId.HasValue)
{
commandParameterSelectedItemAdapterView = rootView.FindViewById <AdapterView>(bp.ListId.Value);
}
var binding = new DataBinding
{
ViewProperty = new PropertyReference(view, viewMemberName, viewModelPropertyInfo != null ? viewModelPropertyInfo.PropertyType : null),
ResourceId = resourceId,
UpdateViewAction = bp.UpdateView,
UpdateViewModelAction = bp.UpdateViewModel,
Mode = bp.Mode,
ViewModelPropertyInfo = viewModelPropertyInfo,
CommandParameterListId = bp.ListId,
CommandParameterListView = commandParameterSelectedItemAdapterView
};
string listPropertyName = bp.ListPropertyName;
if (listPropertyName == null)
{
listPropertyName = propertyName + "List";
}
var pi = viewModel.GetType().GetProperty(listPropertyName);
if (pi == null && binding.ViewModelPropertyInfo.PropertyType.GetInterface("IList") != null)
{
listPropertyName = propertyName;
pi = binding.ViewModelPropertyInfo;
binding.ViewModelPropertyInfo = null;
}
binding.ViewModelListPropertyInfo = pi;
if (view is AdapterView)
{
pi = view.GetType().GetProperty("Adapter", BindingFlags.Public | BindingFlags.Instance);
if (pi != null)
{
var adapter = pi.GetValue(view);
if (adapter == null)
{
string itemTemplateName = bp.ListItemTemplateName ?? listPropertyName + "Item";
string itemValueId = (bp.ListItemIsValue && bp.ListItemValueId == null) ? itemTemplateName : bp.ListItemValueId;
int? itemTemplateResourceId = AndroidHelpers.FindResourceId(itemTemplateName, AndroidHelpers.ResourceCategory.Layout);
int? itemValueResourceId = AndroidHelpers.FindResourceId(itemValueId);
if (itemTemplateResourceId.HasValue)
{
adapter = new DataBindableListAdapter <object>(layoutInflater, itemTemplateResourceId.Value, itemTemplateName + "_", itemValueResourceId, rootViewExtensionPoints);
pi.SetValue(view, adapter);
}
}
binding.ListAdapter = adapter as IDataBindableListAdapter;
}
}
switch (binding.Mode)
{
case BindingMode.TwoWay: AddTwoWayHandler(binding); break;
case BindingMode.Command: AddCommandHandler(binding); break;
}
dataBindings.Add(idName, binding);
return(binding);
}