/// <summary>
/// Processes the node.
/// </summary>
public override void VisitControl(ResolvedControl node)
{
var parentName = controlName;
controlName = CreateControl(node);
base.VisitControl(node);
emitter.EmitAddCollectionItem(parentName, controlName);
controlName = parentName;
}
public override void VisitControl(ResolvedControl control)
{
Matcher.PushControl(control);
foreach (var style in Matcher.GetMatchingStyles())
{
style.ApplyStyle(control);
}
base.VisitControl(control);
Matcher.PopControl();
}
public override Type GetChildDataContextType(Type dataContext, DataContextStack controlContextStack, ResolvedControl control, DotvvmProperty dproperty = null)
{
var property = DotvvmProperty.ResolveProperty(control.Metadata.Type, PropertyName);
ResolvedPropertySetter propertyValue;
if (control.Properties.TryGetValue(property, out propertyValue))
{
var binding = propertyValue as ResolvedPropertyBinding;
if (binding == null) return dataContext;
return binding.Binding.GetExpression().Type;
}
else return dataContext;
}
// public static Expression GetDataContextExpression(DataContextStack dataContextStack, ResolvedControl control, DotvvmProperty property = null)
//{
// var attributes = control.Metadata.Type.GetCustomAttributes<DataContextChangeAttribute>();
// Expression dataContextExpression = Expression.Parameter(dataContextStack.DataContextType, Constants.ThisSpecialBindingProperty);
// var paramDataContextExpression = dataContextExpression;
// foreach (var attribute in attributes)
// {
// // TODO: assign to varialbes to reduce multiple calls ?
// dataContextExpression = attribute.GetChildDataContextType(dataContextExpression, dataContextStack, control, property);
// }
// return dataContextExpression == paramDataContextExpression ? null : dataContextExpression;
//}
public static Type GetDataContextExpression(DataContextStack dataContextStack, ResolvedControl control, DotvvmProperty property = null)
{
var attributes = property == null ? control.Metadata.Type.GetCustomAttributes<DataContextChangeAttribute>() : property.PropertyInfo?.GetCustomAttributes<DataContextChangeAttribute>();
if (attributes == null) return null;
var type = dataContextStack.DataContextType;
var paramDataContextExpression = type;
foreach (var attribute in attributes)
{
// TODO: assign to varialbes to reduce multiple calls ?
type = attribute.GetChildDataContextType(type, dataContextStack, control, property);
}
return type == paramDataContextExpression ? null : type;
}
protected virtual void ApplyStyle(ResolvedControl control)
{
if(SetHtmlAttributes != null)
{
foreach (var attr in SetHtmlAttributes)
{
if(control.HtmlAttributes == null || !control.HtmlAttributes.ContainsKey(attr.Key) || attr.Value.append)
{
control.SetHtmlAttribute(attr.Key, attr.Value.value);
}
}
}
if(SetProperties != null)
{
foreach (var prop in SetProperties)
{
if(!control.Properties.ContainsKey(prop.Key))
{
control.Properties.Add(prop.Key, prop.Value);
}
}
}
}
public virtual void VisitControl(ResolvedControl control)
{
DefaultVisit(control);
}
public ResolvedPropertyControl(DotvvmProperty property, ResolvedControl control)
: base(property)
{
Control = control;
}
/// <summary>
/// Processes the HTML element that represents a new object.
/// </summary>
protected string CreateControl(ResolvedControl control)
{
string name;
if (control.Metadata.ControlBuilderType == null)
{
// compiled control
name = emitter.EmitCreateObject(control.Metadata.Type, control.ContructorParameters);
}
else
{
// markup control
name = emitter.EmitInvokeControlBuilder(control.Metadata.Type, control.Metadata.VirtualPath);
}
emitter.EmitSetAttachedProperty(name, typeof(Internal).FullName, Internal.UniqueIDProperty.Name, name);
if(control.HtmlAttributes != null && control.Metadata.HasHtmlAttributesCollection)
{
ProcessHtmlAttributes(name, control.HtmlAttributes, control.DataContextTypeStack);
}
return name;
}
//public override Expression GetChildDataContextType(Expression dataContext, DataContextStack controlContextStack, ResolvedControl control, DotvvmProperty property = null)
//{
// return ExpressionUtils.Indexer(dataContext, controlContextStack.GetNextParameter(typeof(int)));
//}
public override Type GetChildDataContextType(Type dataContext, DataContextStack controlContextStack, ResolvedControl control, DotvvmProperty property = null)
{
return ReflectionUtils.GetEnumerableType(dataContext);
}
public void PushControl(ResolvedControl control)
{
Context = new StyleMatchContext() { Control = control, Parent = Context };
}
public abstract Type GetChildDataContextType(Type dataContext, DataContextStack controlContextStack, ResolvedControl control, DotvvmProperty property = null);
public void ApplyStyle(ResolvedControl control)
{
@this.ApplyStyle(control);
}
public ResolvedPropertyControl(DotvvmProperty property, ResolvedControl control)
: base(property)
{
Control = control;
}
public override Type GetChildDataContextType(Type dataContext, DataContextStack controlContextStack, ResolvedControl control, DotvvmProperty property = null)
{
return type;
}
public virtual void VisitControl(ResolvedControl control)
{
DefaultVisit(control);
}