private OptionConfigurationElement EnsureElementPropertyValue(OptionConfigurationProperty property)
{
if(property == null)
throw new ArgumentNullException("property");
object value = null;
lock(_values)
{
_values.TryGetValue(property, out value);
if(value == null)
{
//如果当前配置属性定义项的类型不是一个选项配置元素，则抛出异常。因为所有复合类型必须从选项配置元素继承
if(!typeof(OptionConfigurationElement).IsAssignableFrom(property.Type))
throw new OptionConfigurationException();
//根据配置属性定义项的类型创建其对应的目标对象
if(property.Type.IsGenericType && property.Type.GetGenericTypeDefinition() == typeof(OptionConfigurationElementCollection<>))
value = Activator.CreateInstance(property.Type, new object[] { property.ElementName, null });
else
value = Activator.CreateInstance(property.Type);
//设置创建的选项配置元素对象的表示其自身的属性定义项
((OptionConfigurationElement)value)._elementProperty = property;
//将创建的目标对象保存到对应的属性值中
_values[property] = value;
}
}
return (OptionConfigurationElement)value;
}
protected internal object this[OptionConfigurationProperty property]
{
get
{
if (property == null)
{
throw new ArgumentNullException("property");
}
object value;
if (_values.TryGetValue(property, out value))
{
return(value);
}
return(property.DefaultValue);
}
set
{
this.SetPropertyValue(property, value);
//激发“PropertyChanged”事件
this.RaisePropertyChanged(property.Name);
}
}
private void SetPropertyValue(OptionConfigurationProperty property, object value)
{
if (property == null)
{
throw new ArgumentNullException("property");
}
if (object.Equals(value, property.DefaultValue))
{
_values.Remove(property);
}
else
{
if (property.Type.IsAssignableFrom(value.GetType()))
{
_values[property] = value;
}
else
{
if (property.Converter == null)
{
_values[property] = Zongsoft.Common.Convert.ConvertValue(value, property.Type, property.DefaultValue);
}
else
{
_values[property] = property.Converter.ConvertFrom(value);
}
}
}
}
static TracerElement()
{
_enabled = new OptionConfigurationProperty("enabled", typeof(bool), true);
_listeners = new OptionConfigurationProperty("listeners", typeof(TraceListenerElementCollection), null);
_properties = new OptionConfigurationPropertyCollection();
_properties.Add(_enabled);
_properties.Add(_listeners);
}
private static OptionConfigurationProperty CreateOptionPropertyFromAttribute(PropertyInfo propertyInfo)
{
OptionConfigurationProperty result = null;
var attribute = (OptionConfigurationPropertyAttribute)Attribute.GetCustomAttribute(propertyInfo, typeof(OptionConfigurationPropertyAttribute));
if(attribute != null)
result = new OptionConfigurationProperty(propertyInfo);
return result;
}
public void Add(string name, string value)
{
if (string.IsNullOrWhiteSpace(name))
{
throw new ArgumentNullException("name");
}
if (_unrecognizedProperties.Contains(name))
{
throw new OptionConfigurationException(string.Format("The '{0}' attribute is existed.", name));
}
var property = new OptionConfigurationProperty(name, typeof(string));
_element.Properties.Add(property);
_element.SetPropertyValue(property, value);
_unrecognizedProperties.Add(name);
}
protected internal object this[OptionConfigurationProperty property]
{
get
{
if(property == null)
throw new ArgumentNullException("property");
object value;
if(_values.TryGetValue(property, out value))
return value;
return property.DefaultValue;
}
set
{
this.SetPropertyValue(property, value);
//激发“PropertyChanged”事件
this.RaisePropertyChanged(property.Name);
}
}
private void SetPropertyValue(OptionConfigurationProperty property, object value)
{
if(property == null)
throw new ArgumentNullException("property");
if(object.Equals(value, property.DefaultValue))
_values.Remove(property);
else
{
if(property.Type.IsAssignableFrom(value.GetType()))
_values[property] = value;
else
{
if(property.Converter == null)
_values[property] = Zongsoft.Common.Convert.ConvertValue(value, property.Type, property.DefaultValue);
else
_values[property] = property.Converter.ConvertFrom(value);
}
}
}
