/// <summary>
/// Processes the attribute node.
/// </summary>
private void ProcessAttribute(DothtmlAttributeNode attribute, IAbstractControl control, IDataContextStack dataContext)
{
var name = attribute.AttributePrefix == null ? attribute.AttributeName : attribute.AttributePrefix + ":" + attribute.AttributeName;
// find the property
var property = controlResolver.FindProperty(control.Metadata, name);
if (property != null)
{
if (property.IsBindingProperty || property.DataContextManipulationAttribute != null) // when DataContextManipulationAttribute is set, lets hope that author knows what is he doing.
{
dataContext = GetDataContextChange(dataContext, control, property);
}
if (!property.MarkupOptions.MappingMode.HasFlag(MappingMode.Attribute))
{
attribute.AddError($"The property '{property.FullName}' cannot be used as a control attribute!");
return;
}
// set the property
if (attribute.ValueNode == null)
{
// implicitly set boolean property
if (property.PropertyType.IsEqualTo(new ResolvedTypeDescriptor(typeof(bool))))
{
string error;
if (!treeBuilder.AddProperty(control, treeBuilder.BuildPropertyValue(property, true, attribute), out error))
{
attribute.AddError(error);
}
}
else if (property.MarkupOptions.AllowAttributeWithoutValue)
{
string error;
if (!treeBuilder.AddProperty(control, treeBuilder.BuildPropertyValue(property, (property as DotVVM.Framework.Binding.DotvvmProperty)?.DefaultValue, attribute), out error))
{
attribute.AddError(error);
}
}
else
{
attribute.AddError($"The attribute '{property.Name}' on the control '{control.Metadata.Type.FullName}' must have a value!");
}
}
else if (attribute.ValueNode is DothtmlValueBindingNode)
{
// binding
var bindingNode = (attribute.ValueNode as DothtmlValueBindingNode).BindingNode;
if (property.IsVirtual && !property.IsBindingProperty && property.PropertyType.FullName != "System.Object")
{
attribute.ValueNode.AddError($"The property '{ property.FullName }' cannot contain bindings because it's not DotvvmProperty.");
}
else if (!treatBindingAsHardCodedValue.Contains(bindingNode.Name))
{
if (!property.MarkupOptions.AllowBinding)
{
attribute.ValueNode.AddError($"The property '{ property.FullName }' cannot contain {bindingNode.Name} binding.");
}
}
var binding = ProcessBinding(bindingNode, dataContext, property);
var bindingProperty = treeBuilder.BuildPropertyBinding(property, binding, attribute);
string error;
if (!treeBuilder.AddProperty(control, bindingProperty, out error))
{
attribute.AddError(error);
}
}
else
{
// hard-coded value in markup
if (!property.MarkupOptions.AllowHardCodedValue)
{
attribute.ValueNode.AddError($"The property '{ property.FullName }' cannot contain hard coded value.");
}
var textValue = attribute.ValueNode as DothtmlValueTextNode;
var value = ConvertValue(WebUtility.HtmlDecode(textValue.Text), property.PropertyType);
var propertyValue = treeBuilder.BuildPropertyValue(property, value, attribute);
string error;
if (!treeBuilder.AddProperty(control, propertyValue, out error))
{
attribute.AddError(error);
}
}
}
else
{
attribute.AddError($"The control '{control.Metadata.Type}' does not have a property '{attribute.AttributeName}' and does not allow HTML attributes!");
}
}
/// <summary>
/// Processes the attribute node.
/// </summary>
private void ProcessAttribute(DothtmlAttributeNode attribute, IAbstractControl control, IDataContextStack dataContext)
{
if (attribute.AttributePrefix == "html")
{
if (!control.Metadata.HasHtmlAttributesCollection)
{
attribute.AddError($"The control '{control.Metadata.Type.FullName}' cannot use HTML attributes!");
}
else
{
try
{
treeBuilder.SetHtmlAttribute(control, ProcessAttributeValue(attribute, dataContext));
}
catch (NotSupportedException ex)
{
if (ex.InnerException == null)
{
throw;
}
else
{
attribute.AddError(ex.Message);
}
}
}
return;
}
if (!string.IsNullOrEmpty(attribute.AttributePrefix))
{
attribute.AddError("Attributes with XML namespaces are not supported!");
return;
}
// find the property
var property = FindProperty(control.Metadata, attribute.AttributeName);
if (property != null)
{
if (control.HasProperty(property))
{
attribute.AttributeNameNode.AddError($"control '{ ((DothtmlElementNode)control.DothtmlNode).FullTagName }' already has property '{ attribute.AttributeName }'.");
}
if (property.IsBindingProperty || property.DataContextManipulationAttribute != null) // when DataContextManipulationAttribute is set, lets hope that author knows what is he doing.
{
dataContext = GetDataContextChange(dataContext, control, property);
}
if (!property.MarkupOptions.MappingMode.HasFlag(MappingMode.Attribute))
{
attribute.AddError($"The property '{property.FullName}' cannot be used as a control attribute!");
return;
}
// set the property
if (attribute.ValueNode == null)
{
attribute.AddError($"The attribute '{property.Name}' on the control '{control.Metadata.Type.FullName}' must have a value!");
}
else if (attribute.ValueNode is DothtmlValueBindingNode)
{
// binding
var bindingNode = (attribute.ValueNode as DothtmlValueBindingNode).BindingNode;
if (property.IsVirtual)
{
attribute.ValueNode.AddError($"The property '{ property.FullName }' cannot contain bindings because it's not DotvvmProperty.");
}
else if (treatBindingAsHardCodedValue.Contains(bindingNode.Name))
{
if (!property.MarkupOptions.AllowHardCodedValue)
{
attribute.ValueNode.AddError($"The property '{ property.FullName }' cannot contain {bindingNode.Name} binding, it can contain only hard-coded value or resource binding.");
}
}
else
{
if (!property.MarkupOptions.AllowBinding)
{
attribute.ValueNode.AddError($"The property '{ property.FullName }' cannot contain {bindingNode.Name} binding.");
}
}
var binding = ProcessBinding(bindingNode, dataContext);
var bindingProperty = treeBuilder.BuildPropertyBinding(property, binding, attribute);
treeBuilder.SetProperty(control, bindingProperty);
}
else
{
// hard-coded value in markup
if (!property.MarkupOptions.AllowHardCodedValue)
{
attribute.ValueNode.AddError($"The property '{ property.FullName }' cannot contain hard coded value.");
}
var textValue = attribute.ValueNode as DothtmlValueTextNode;
var value = ConvertValue(textValue.Text, property.PropertyType);
var propertyValue = treeBuilder.BuildPropertyValue(property, value, attribute);
treeBuilder.SetProperty(control, propertyValue);
}
}
else if (control.Metadata.HasHtmlAttributesCollection)
{
// if the property is not found, add it as an HTML attribute
try
{
treeBuilder.SetHtmlAttribute(control, ProcessAttributeValue(attribute, dataContext));
}
catch (NotSupportedException ex)
{
if (ex.InnerException == null)
{
throw;
}
else
{
attribute.AddError(ex.Message);
}
}
}
else
{
attribute.AddError($"The control '{control.Metadata.Type}' does not have a property '{attribute.AttributeName}' and does not allow HTML attributes!");
}
}