|
public DefineProperty ( JsPropertyId propertyId, |
||
| propertyId | JsPropertyId | The ID of the property |
| propertyDescriptor | The property descriptor | |
| return | bool | |
private static void SetNonEnumerableProperty(JsValue objValue, string name, JsValue value)
{
JsValue descriptorValue = JsValue.CreateObject();
descriptorValue.SetProperty("enumerable", JsValue.False, true);
descriptorValue.SetProperty("writable", JsValue.True, true);
JsPropertyId id = JsPropertyId.FromString(name);
objValue.DefineProperty(id, descriptorValue);
objValue.SetProperty(id, value, true);
}
private void ProjectProperties(EmbeddedItem externalItem)
{
Type type = externalItem.HostType;
object obj = externalItem.HostObject;
JsValue typeValue = externalItem.ScriptValue;
IList <JsNativeFunction> nativeFunctions = externalItem.NativeFunctions;
bool instance = externalItem.IsInstance;
string typeName = type.FullName;
BindingFlags defaultBindingFlags = ReflectionHelpers.GetDefaultBindingFlags(instance);
PropertyInfo[] properties = type.GetProperties(defaultBindingFlags);
foreach (PropertyInfo property in properties)
{
string propertyName = property.Name;
JsValue descriptorValue = JsValue.CreateObject();
descriptorValue.SetProperty("enumerable", JsValue.True, true);
if (property.GetGetMethod() != null)
{
JsNativeFunction nativeGetFunction = (callee, isConstructCall, args, argCount, callbackData) =>
{
if (instance && obj == null)
{
CreateAndSetTypeError(string.Format(
Strings.Runtime_InvalidThisContextForHostObjectProperty, propertyName));
return(JsValue.Undefined);
}
object result;
try
{
result = property.GetValue(obj, new object[0]);
}
catch (Exception e)
{
Exception exception = UnwrapException(e);
var wrapperException = exception as WrapperException;
JsValue errorValue;
if (wrapperException != null)
{
errorValue = CreateErrorFromWrapperException(wrapperException);
}
else
{
string errorMessage = instance ?
string.Format(Strings.Runtime_HostObjectPropertyGettingFailed, propertyName,
exception.Message)
:
string.Format(Strings.Runtime_HostTypePropertyGettingFailed, propertyName,
typeName, exception.Message)
;
errorValue = JsErrorHelpers.CreateError(errorMessage);
}
JsErrorHelpers.SetException(errorValue);
return(JsValue.Undefined);
}
JsValue resultValue = MapToScriptType(result);
return(resultValue);
};
nativeFunctions.Add(nativeGetFunction);
JsValue getMethodValue = JsValue.CreateFunction(nativeGetFunction);
descriptorValue.SetProperty("get", getMethodValue, true);
}
if (property.GetSetMethod() != null)
{
JsNativeFunction nativeSetFunction = (callee, isConstructCall, args, argCount, callbackData) =>
{
if (instance && obj == null)
{
CreateAndSetTypeError(string.Format(
Strings.Runtime_InvalidThisContextForHostObjectProperty, propertyName));
return(JsValue.Undefined);
}
object value = MapToHostType(args[1]);
ReflectionHelpers.FixPropertyValueType(ref value, property);
try
{
property.SetValue(obj, value, new object[0]);
}
catch (Exception e)
{
Exception exception = UnwrapException(e);
var wrapperException = exception as WrapperException;
JsValue errorValue;
if (wrapperException != null)
{
errorValue = CreateErrorFromWrapperException(wrapperException);
}
else
{
string errorMessage = instance ?
string.Format(Strings.Runtime_HostObjectPropertySettingFailed, propertyName,
exception.Message)
:
string.Format(Strings.Runtime_HostTypePropertySettingFailed, propertyName,
typeName, exception.Message)
;
errorValue = JsErrorHelpers.CreateError(errorMessage);
}
JsErrorHelpers.SetException(errorValue);
return(JsValue.Undefined);
}
return(JsValue.Undefined);
};
nativeFunctions.Add(nativeSetFunction);
JsValue setMethodValue = JsValue.CreateFunction(nativeSetFunction);
descriptorValue.SetProperty("set", setMethodValue, true);
}
typeValue.DefineProperty(propertyName, descriptorValue);
}
}
private void ProjectFields(EmbeddedItem externalItem)
{
Type type = externalItem.HostType;
object obj = externalItem.HostObject;
JsValue typeValue = externalItem.ScriptValue;
bool instance = externalItem.IsInstance;
IList <JsNativeFunction> nativeFunctions = externalItem.NativeFunctions;
string typeName = type.FullName;
BindingFlags defaultBindingFlags = ReflectionHelpers.GetDefaultBindingFlags(instance);
FieldInfo[] fields = type.GetFields(defaultBindingFlags);
foreach (FieldInfo field in fields)
{
string fieldName = field.Name;
JsValue descriptorValue = JsValue.CreateObject();
descriptorValue.SetProperty("enumerable", JsValue.True, true);
JsNativeFunction nativeGetFunction = (callee, isConstructCall, args, argCount, callbackData) =>
{
if (instance && obj == null)
{
JsValue undefinedValue = JsValue.Undefined;
JsValue errorValue = JsErrorHelpers.CreateTypeError(
string.Format(Strings.Runtime_InvalidThisContextForHostObjectField, fieldName));
JsErrorHelpers.SetException(errorValue);
return(undefinedValue);
}
object result;
try
{
result = field.GetValue(obj);
}
catch (Exception e)
{
string errorMessage = instance ?
string.Format(Strings.Runtime_HostObjectFieldGettingFailed, fieldName, e.Message)
:
string.Format(Strings.Runtime_HostTypeFieldGettingFailed, fieldName, typeName, e.Message)
;
JsValue undefinedValue = JsValue.Undefined;
JsValue errorValue = JsErrorHelpers.CreateError(errorMessage);
JsErrorHelpers.SetException(errorValue);
return(undefinedValue);
}
JsValue resultValue = MapToScriptType(result);
return(resultValue);
};
nativeFunctions.Add(nativeGetFunction);
JsValue getMethodValue = JsValue.CreateFunction(nativeGetFunction);
descriptorValue.SetProperty("get", getMethodValue, true);
JsNativeFunction nativeSetFunction = (callee, isConstructCall, args, argCount, callbackData) =>
{
if (instance && obj == null)
{
JsValue undefinedValue = JsValue.Undefined;
JsValue errorValue = JsErrorHelpers.CreateTypeError(
string.Format(Strings.Runtime_InvalidThisContextForHostObjectField, fieldName));
JsErrorHelpers.SetException(errorValue);
return(undefinedValue);
}
object value = MapToHostType(args[1]);
ReflectionHelpers.FixFieldValueType(ref value, field);
try
{
field.SetValue(obj, value);
}
catch (Exception e)
{
string errorMessage = instance ?
string.Format(Strings.Runtime_HostObjectFieldSettingFailed, fieldName, e.Message)
:
string.Format(Strings.Runtime_HostTypeFieldSettingFailed, fieldName, typeName, e.Message)
;
JsValue undefinedValue = JsValue.Undefined;
JsValue errorValue = JsErrorHelpers.CreateError(errorMessage);
JsErrorHelpers.SetException(errorValue);
return(undefinedValue);
}
return(JsValue.Undefined);
};
nativeFunctions.Add(nativeSetFunction);
JsValue setMethodValue = JsValue.CreateFunction(nativeSetFunction);
descriptorValue.SetProperty("set", setMethodValue, true);
typeValue.DefineProperty(fieldName, descriptorValue);
}
}
