public static void DescribeComponent(object instance, ScriptComponentDescriptor descriptor, IUrlResolutionService urlResolver, IControlResolver controlResolver)
{
// validate preconditions
if (instance == null)
{
throw new ArgumentNullException("instance");
}
if (descriptor == null)
{
throw new ArgumentNullException("descriptor");
}
if (urlResolver == null)
{
urlResolver = instance as IUrlResolutionService;
}
if (controlResolver == null)
{
controlResolver = instance as IControlResolver;
}
// describe properties
// PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(instance);
PropertyInfo[] properties = instance.GetType().GetProperties(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
foreach (PropertyInfo prop in properties)
{
ScriptControlPropertyAttribute propAttr = null;
ScriptControlEventAttribute eventAttr = null;
string propertyName = prop.Name;
System.ComponentModel.AttributeCollection attribs = new System.ComponentModel.AttributeCollection(Attribute.GetCustomAttributes(prop, false));
// Try getting a property attribute
propAttr = (ScriptControlPropertyAttribute)attribs[typeof(ScriptControlPropertyAttribute)];
if (propAttr == null || !propAttr.IsScriptProperty)
{
// Try getting an event attribute
eventAttr = (ScriptControlEventAttribute)attribs[typeof(ScriptControlEventAttribute)];
if (eventAttr == null || !eventAttr.IsScriptEvent)
{
continue;
}
}
// attempt to rename the property/event
ClientPropertyNameAttribute nameAttr = (ClientPropertyNameAttribute)attribs[typeof(ClientPropertyNameAttribute)];
if (nameAttr != null && !string.IsNullOrEmpty(nameAttr.PropertyName))
{
propertyName = nameAttr.PropertyName;
}
// determine whether to serialize the value of a property. readOnly properties should always be serialized
//bool serialize = true;// prop.ShouldSerializeValue(instance) || prop.IsReadOnly;
//if (serialize)
//{
// get the value of the property, skip if it is null
Control c = null;
object value = prop.GetValue(instance, new object[0] {
});
if (value == null)
{
continue;
}
// convert and resolve the value
if (eventAttr != null && prop.PropertyType != typeof(String))
{
throw new InvalidOperationException("ScriptControlEventAttribute can only be applied to a property with a PropertyType of System.String.");
}
else
{
if (!prop.PropertyType.IsPrimitive && !prop.PropertyType.IsEnum)
{
if (prop.PropertyType == typeof(Color))
{
value = ColorTranslator.ToHtml((Color)value);
}
else
{
// TODO: Determine if we should let ASP.NET AJAX handle this type of conversion, as it supports JSON serialization
//TypeConverter conv = prop.Converter;
//value = conv.ConvertToString(null, CultureInfo.InvariantCulture, value);
//if (prop.PropertyType == typeof(CssStyleCollection))
// value = (new CssStyleCollectionJSCoverter()).Serialize(value, new JavaScriptSerializer());
//if (prop.PropertyType == typeof(Style))
// value = (new CssStyleCollectionJSCoverter()).Serialize(((Style)value).GetStyleAttributes(null), new JavaScriptSerializer());
Type valueType = value.GetType();
JavaScriptConverterAttribute attr = (JavaScriptConverterAttribute)attribs[typeof(JavaScriptConverterAttribute)];
JavaScriptConverter converter = attr != null ?
(JavaScriptConverter)TypeCreator.CreateInstance(attr.ConverterType) :
JsonSerializerFactory.GetJavaScriptConverter(valueType);
if (converter != null)
{
value = converter.Serialize(value, JsonSerializerFactory.GetJavaScriptSerializer());
}
else
{
value = JsonHelper.PreSerializeObject(value);
}
//Dictionary<string, object> dict = value as Dictionary<string, object>;
//if (dict != null && !dict.ContainsKey("__type"))
// dict["__type"] = valueType.AssemblyQualifiedName;
}
}
if (attribs[typeof(IDReferencePropertyAttribute)] != null && controlResolver != null)
{
c = controlResolver.ResolveControl((string)value);
}
if (attribs[typeof(UrlPropertyAttribute)] != null && urlResolver != null)
{
value = urlResolver.ResolveClientUrl((string)value);
}
}
// add the value as an appropriate description
if (eventAttr != null)
{
if (!string.IsNullOrEmpty((string)value))
{
descriptor.AddEvent(propertyName, (string)value);
}
}
else if (attribs[typeof(ElementReferenceAttribute)] != null)
{
if (c == null && controlResolver != null)
{
c = controlResolver.ResolveControl((string)value);
}
if (c != null)
{
value = c.ClientID;
}
descriptor.AddElementProperty(propertyName, (string)value);
}
else if (attribs[typeof(ComponentReferenceAttribute)] != null)
{
if (c == null && controlResolver != null)
{
c = controlResolver.ResolveControl((string)value);
}
if (c != null)
{
//ExtenderControlBase ex = c as ExtenderControlBase;
//if (ex != null && ex.BehaviorID.Length > 0)
// value = ex.BehaviorID;
//else
value = c.ClientID;
}
descriptor.AddComponentProperty(propertyName, (string)value);
}
else
{
if (c != null)
{
value = c.ClientID;
}
descriptor.AddProperty(propertyName, value);
}
}
//}
// determine if we should describe methods
foreach (MethodInfo method in instance.GetType().GetMethods(BindingFlags.Instance | BindingFlags.Static | BindingFlags.Public))
{
ScriptControlMethodAttribute methAttr = (ScriptControlMethodAttribute)Attribute.GetCustomAttribute(method, typeof(ScriptControlMethodAttribute));
if (methAttr == null || !methAttr.IsScriptMethod)
{
continue;
}
// We only need to support emitting the callback target and registering the WebForms.js script if there is at least one valid method
Control control = instance as Control;
if (control != null)
{
// Force WebForms.js
control.Page.ClientScript.GetCallbackEventReference(control, null, null, null);
// Add the callback target
descriptor.AddProperty("_callbackTarget", control.UniqueID);
}
break;
}
}
private static Dictionary <string, object> BuildGraph(object obj, IUrlResolutionService uriResolver,
IControlResolver controlResolver)
{
Dictionary <string, object> dict = new Dictionary <string, object>();
PropertyDescriptorCollection pdc = TypeDescriptor.GetProperties(obj);
foreach (PropertyDescriptor pd in pdc)
{
ExtenderControlPropertyAttribute ecpa = GetAttribute <ExtenderControlPropertyAttribute>(pd);
ClientPropertyNameAttribute cpna = GetAttribute <ClientPropertyNameAttribute>(pd);
IDReferencePropertyAttribute idr = GetAttribute <IDReferencePropertyAttribute>(pd);
UrlPropertyAttribute ura = GetAttribute <UrlPropertyAttribute>(pd);
ExtenderControlMethodAttribute ecma = GetAttribute <ExtenderControlMethodAttribute>(pd);
ExtenderControlEventAttribute ecea = GetAttribute <ExtenderControlEventAttribute>(pd);
ElementReferenceAttribute era = GetAttribute <ElementReferenceAttribute>(pd);
ComponentReferenceAttribute cra = GetAttribute <ComponentReferenceAttribute>(pd);
if (ecpa == null && cra == null && cpna == null && era == null)
{
continue;
}
string propName =
cpna != null && !string.IsNullOrEmpty(cpna.PropertyName)
? cpna.PropertyName
: pd.Name;
if (propName == "ClientClassName")
{
propName = "typeToBuild";
}
object o = null;
object value = pd.GetValue(obj);
if (value == null)
{
continue;
}
if (value as IClientClass != null && ((IClientClass)value).NotSet)
{
continue;
}
if (value as ClientEvalScript != null && string.IsNullOrEmpty((value as ClientEvalScript).ClientScript))
{
continue;
}
if (pd.PropertyType == typeof(string))
{
o = value;
if (ura != null)
{
o = uriResolver.ResolveClientUrl((string)o);
}
else if (idr != null || cra != null)
{
o = BuildGraph(new Reference
{
ReferenceType = ReferenceType.Component,
ClientId = controlResolver.ResolveControl((string)o).ClientID
}, uriResolver, controlResolver);
}
else if (era != null)
{
Control c = controlResolver.ResolveControl((string)o);
o = BuildGraph(
new Reference
{
ReferenceType = ReferenceType.Element, ClientId = c == null ? (string)o : c.ClientID
},
uriResolver, controlResolver);
}
}
else if (value is IEnumerable)
{
List <object> lst = new List <object>();
foreach (object a in (IEnumerable)value)
{
object b;
if (a as IUICollectionItem != null)
{
b = a is UriValue
? uriResolver.ResolveClientUrl(((UriValue)a).Value.ToString())
: ((IUICollectionItem)a).Value;
}
else
{
b = BuildGraph(a, uriResolver, controlResolver);
}
if (b != null)
{
lst.Add(b);
}
}
if (lst.Count > 0)
{
o = lst;
}
}
else if (pd.PropertyType.IsEnum)
{
o = Enum.GetName(pd.PropertyType, value);
}
else if (pd.PropertyType.IsPrimitive || pd.PropertyType.IsValueType)
{
o = value;
}
else
{
o = BuildGraph(value, uriResolver, controlResolver);
}
if (o != null)
{
dict.Add(propName, o);
}
}
return(dict.Count > 0 ? dict : null);
}
public static void DescribeComponent(object instance, ScriptComponentDescriptor descriptor,
IUrlResolutionService urlResolver, IControlResolver controlResolver)
{
// validate preconditions
if (instance == null)
{
throw new ArgumentNullException("instance");
}
if (descriptor == null)
{
throw new ArgumentNullException("descriptor");
}
if (urlResolver == null)
{
urlResolver = instance as IUrlResolutionService;
}
if (controlResolver == null)
{
controlResolver = instance as IControlResolver;
}
// describe properties
PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(instance);
foreach (PropertyDescriptor prop in properties)
{
ExtenderControlPropertyAttribute propAttr = null;
ExtenderControlEventAttribute eventAttr = null;
string propertyName = prop.Name;
// Try getting a property attribute
propAttr = (ExtenderControlPropertyAttribute)prop.Attributes[typeof(ExtenderControlPropertyAttribute)];
if (propAttr == null || !propAttr.IsScriptProperty)
{
// Try getting an event attribute
eventAttr = (ExtenderControlEventAttribute)prop.Attributes[typeof(ExtenderControlEventAttribute)];
if (eventAttr == null || !eventAttr.IsScriptEvent)
{
continue;
}
}
// attempt to rename the property/event
ClientPropertyNameAttribute nameAttr =
(ClientPropertyNameAttribute)prop.Attributes[typeof(ClientPropertyNameAttribute)];
if (!string.IsNullOrEmpty(nameAttr.PropertyName))
{
propertyName = nameAttr.PropertyName;
}
object value = prop.GetValue(instance);
if (value == null)
{
continue;
}
// determine whether to serialize the value of a property. readOnly properties should always be serialized
bool serialize = prop.ShouldSerializeValue(instance) || prop.IsReadOnly;
if (serialize)
{
// get the value of the property, skip if it is null
Control c = null;
// convert and resolve the value
if (eventAttr != null && prop.PropertyType != typeof(String))
{
throw new InvalidOperationException(
"ExtenderControlEventAttribute can only be applied to a property with a PropertyType of System.String.");
}
else
{
if (!prop.PropertyType.IsPrimitive && !prop.PropertyType.IsEnum)
{
// Check if we can use any of our custom converters
// (first do a direct lookup on the property type,
// but also check all of its base types if nothing
// was found)
Converter <object, string> customConverter = null;
if (!_customConverters.TryGetValue(prop.PropertyType, out customConverter))
{
foreach (KeyValuePair <Type, Converter <object, string> > pair in _customConverters)
{
if (prop.PropertyType.IsSubclassOf(pair.Key))
{
customConverter = pair.Value;
break;
}
}
}
// Use the custom converter if found, otherwise use
// its current type converter
if (customConverter != null)
{
value = customConverter(value);
}
else
{
// Determine if we should let ASP.NET AJAX handle this type of conversion, as it supports JSON serialization
if (propAttr != null && propAttr.UseJsonSerialization)
{
if (value is IEnumerable)
{
List <object> lst = new List <object>();
foreach (object a in (IEnumerable)value)
{
object b;
Type typ = a.GetType();
if (a as IUICollectionItem != null)
{
b = a is UriValue
? urlResolver.ResolveClientUrl(((UriValue)a).Value.ToString())
: ((IUICollectionItem)a).Value;
}
else if (typ.IsPrimitive || typ.IsValueType)
{
b = a;
}
else
{
b = BuildGraph(a, urlResolver, controlResolver);
}
if (b != null)
{
lst.Add(b);
}
}
if (lst.Count > 0)
{
value = lst;
}
}
else if (value.GetType().IsPrimitive || value.GetType().IsValueType)
{
}
else
{
value = BuildGraph(value, urlResolver, controlResolver);
}
// Use ASP.NET JSON serialization
}
else
{
// Use the property's own converter
TypeConverter conv = prop.Converter;
value = conv.ConvertToString(null, CultureInfo.InvariantCulture, value);
}
}
}
if (prop.Attributes[typeof(IDReferencePropertyAttribute)] != null && controlResolver != null)
{
c = controlResolver.ResolveControl((string)value);
}
if (prop.Attributes[typeof(UrlPropertyAttribute)] != null && urlResolver != null)
{
value = urlResolver.ResolveClientUrl((string)value);
}
}
// add the value as an appropriate description
if (eventAttr != null)
{
descriptor.AddEvent(propertyName, (string)value);
}
else if (prop.Attributes[typeof(ElementReferenceAttribute)] != null)
{
if (c == null && controlResolver != null)
{
c = controlResolver.ResolveControl((string)value);
}
if (c != null)
{
value = c.ClientID;
}
descriptor.AddElementProperty(propertyName, (string)value);
}
else if (prop.Attributes[typeof(ComponentReferenceAttribute)] != null)
{
if (c == null && controlResolver != null)
{
c = controlResolver.ResolveControl((string)value);
}
if (c != null)
{
ExtenderControlBase ex = c as ExtenderControlBase;
if (ex != null && ex.BehaviorID.Length > 0)
{
value = ex.BehaviorID;
}
else
{
value = c.ClientID;
}
}
descriptor.AddComponentProperty(propertyName, (string)value);
}
else
{
if (c != null)
{
value = c.ClientID;
}
descriptor.AddProperty(propertyName, value);
}
}
}
// determine if we should describe methods
foreach (
MethodInfo method in
instance.GetType().GetMethods(BindingFlags.Instance | BindingFlags.Static | BindingFlags.Public))
{
ExtenderControlMethodAttribute methAttr =
(ExtenderControlMethodAttribute)
Attribute.GetCustomAttribute(method, typeof(ExtenderControlMethodAttribute));
if (methAttr == null || !methAttr.IsScriptMethod)
{
continue;
}
// We only need to support emitting the callback target and registering the WebForms.js script if there is at least one valid method
Control control = instance as Control;
if (control != null)
{
// Force WebForms.js
control.Page.ClientScript.GetCallbackEventReference(control, null, null, null);
// Add the callback target
descriptor.AddProperty("_callbackTarget", control.UniqueID);
}
break;
}
}
/// <summary>
/// 预处理序列化对象，通过调用此函数，可对序列化进行预处理
/// </summary>
/// <param name="input">要序列化的对象</param>
/// <param name="type">要序列化的类型，可以是input的基类或input实现的接口</param>
/// <param name="resolverTypeLevel">要输出类型信息的级别深度</param>
/// <returns>处理结果</returns>
/// <remarks>预处理序列化对象，通过调用此函数，可对序列化进行预处理</remarks>
public static object PreSerializeObject(object input, Type type, int resolverTypeLevel)
{
object result = input;
if (input != null)
{
JavaScriptConverter converter = JsonSerializerFactory.GetJavaScriptConverter(input.GetType());
if (converter != null)
{
result = converter.Serialize(input, JsonSerializerFactory.GetJavaScriptSerializer());
}
else
{
if (input is XElement || input is XmlElement)
{
result = null;
}
else if (input is DateTime)
{
result = input.ToString();
}
//当前判断条件，只适用经营指标系统，其他系统请注销此判断条件。
else if (input is double)
{
result = ((double)input).ToString("F7");
}
else if (!(input is ValueType) && !(input is string) && !(input is IDictionary))
{
IEnumerable list = input as IEnumerable;
if (list != null)
{
ArrayList a = new ArrayList();
foreach (object o in list)
{
a.Add(PreSerializeObject(o, null, resolverTypeLevel - 1));
}
result = a;
}
else
{
Dictionary <string, object> dict = new Dictionary <string, object>();
Type inputType = input.GetType();
if (type != null)
{
ExceptionHelper.FalseThrow(type.IsAssignableFrom(inputType),
string.Format("{0} 没有从类型{1}继承", inputType, type));
}
else
{
type = inputType;
}
foreach (PropertyInfo pi in type.GetProperties(BindingFlags.Instance | BindingFlags.Public))
{
ScriptIgnoreAttribute ignoreAttr = (ScriptIgnoreAttribute)Attribute.GetCustomAttribute(pi, typeof(ScriptIgnoreAttribute), false);
if (ignoreAttr == null)
{
MethodInfo mi = pi.GetGetMethod();
if (mi != null && mi.GetParameters().Length <= 0)
{
object v = PreSerializeObject(mi.Invoke(input, null), null, resolverTypeLevel - 1);
ClientPropertyNameAttribute nameAttr = (ClientPropertyNameAttribute)Attribute.GetCustomAttribute(pi, typeof(ClientPropertyNameAttribute), false);
string name = nameAttr == null ? pi.Name : nameAttr.PropertyName;
dict.Add(name, v);
}
}
}
result = dict;
}
}
}
}
if (resolverTypeLevel > 0 && result is Dictionary <string, object> )
{
Dictionary <string, object> resultDict = result as Dictionary <string, object>;
if (!resultDict.ContainsKey("__type"))
{
resultDict["__type"] = input.GetType().AssemblyQualifiedName;
}
}
return(result);
}
