/// <summary>
/// Deletes an object's property
/// </summary>
/// <remarks>
/// Requires an active script context.
/// </remarks>
/// <param name="propertyId">The ID of the property</param>
/// <param name="useStrictRules">The property set should follow strict mode rules</param>
/// <returns>Whether the property was deleted</returns>
public JsValue DeleteProperty(JsPropertyId propertyId, bool useStrictRules)
{
JsValue returnReference;
JsErrorHelpers.ThrowIfError(NativeMethods.JsDeleteProperty(this, propertyId, useStrictRules, out returnReference));
return(returnReference);
}
/// <summary>
/// Defines a new object's own property from a property descriptor
/// </summary>
/// <remarks>
/// Requires an active script context.
/// </remarks>
/// <param name="propertyId">The ID of the property</param>
/// <param name="propertyDescriptor">The property descriptor</param>
/// <returns>Whether the property was defined</returns>
public bool DefineProperty(JsPropertyId propertyId, JsValue propertyDescriptor)
{
bool result;
JsErrorHelpers.ThrowIfError(NativeMethods.JsDefineProperty(this, propertyId, propertyDescriptor, out result));
return(result);
}
/// <summary>
/// Gets an object's property
/// </summary>
/// <remarks>
/// Requires an active script context.
/// </remarks>
/// <param name="id">The ID of the property</param>
/// <returns>The value of the property</returns>
public JsValue GetProperty(JsPropertyId id)
{
JsValue propertyReference;
JsErrorHelpers.ThrowIfError(NativeMethods.JsGetProperty(this, id, out propertyReference));
return(propertyReference);
}
/// <summary>
/// Determines whether an object has a non-inherited property
/// </summary>
/// <remarks>
/// Requires an active script context.
/// </remarks>
/// <param name="propertyId">The ID of the property</param>
/// <returns>Whether the object has the non-inherited property</returns>
public bool HasOwnProperty(JsPropertyId propertyId)
{
bool hasOwnProperty;
JsErrorHelpers.ThrowIfError(NativeMethods.JsHasOwnProperty(this, propertyId, out hasOwnProperty));
return(hasOwnProperty);
}
/// <summary>
/// Gets a property descriptor for an object's own property
/// </summary>
/// <remarks>
/// Requires an active script context.
/// </remarks>
/// <param name="propertyId">The ID of the property</param>
/// <returns>The property descriptor</returns>
public JsValue GetOwnPropertyDescriptor(JsPropertyId propertyId)
{
JsValue descriptorReference;
JsErrorHelpers.ThrowIfError(NativeMethods.JsGetOwnPropertyDescriptor(this, propertyId, out descriptorReference));
return(descriptorReference);
}
/// <summary>
/// Makes a mapping of value from the script type to a host type
/// </summary>
/// <param name="value">The source value</param>
/// <returns>The mapped value</returns>
public object MapToHostType(JsValue value)
{
JsValueType valueType = value.ValueType;
object result = null;
switch (valueType)
{
case JsValueType.Null:
result = null;
break;
case JsValueType.Undefined:
result = Undefined.Value;
break;
case JsValueType.Boolean:
result = value.ToBoolean();
break;
case JsValueType.Number:
result = NumericHelpers.CastDoubleValueToCorrectType(value.ToDouble());
break;
case JsValueType.String:
result = value.ToString();
break;
case JsValueType.Function:
JsPropertyId externalObjectPropertyId = JsPropertyId.FromString(ExternalObjectPropertyName);
if (value.HasProperty(externalObjectPropertyId))
{
JsValue externalObjectValue = value.GetProperty(externalObjectPropertyId);
result = externalObjectValue.HasExternalData ?
GCHandle.FromIntPtr(externalObjectValue.ExternalData).Target : null;
}
result = result ?? value.ConvertToObject();
break;
case JsValueType.Object:
case JsValueType.Error:
case JsValueType.Array:
case JsValueType.Symbol:
case JsValueType.ArrayBuffer:
case JsValueType.TypedArray:
case JsValueType.DataView:
result = value.HasExternalData ?
GCHandle.FromIntPtr(value.ExternalData).Target : value.ConvertToObject();
break;
default:
throw new ArgumentOutOfRangeException();
}
return(result);
}
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);
}
internal static extern JsErrorCode JsCreatePropertyId(string name, UIntPtr length,
out JsPropertyId propertyId);
internal static extern JsErrorCode JsDefineProperty(JsValue obj, JsPropertyId propertyId,
JsValue propertyDescriptor, out bool result);
internal static extern JsErrorCode JsDeleteProperty(JsValue obj, JsPropertyId propertyId, bool useStrictRules,
out JsValue result);
internal static extern JsErrorCode JsHasOwnProperty(JsValue obj, JsPropertyId propertyId, out bool hasOwnProperty);
internal static extern JsErrorCode JsSetProperty(JsValue obj, JsPropertyId propertyId, JsValue value,
bool useStrictRules);
internal static extern JsErrorCode JsGetOwnPropertyDescriptor(JsValue obj, JsPropertyId propertyId,
out JsValue propertyDescriptor);
internal static extern JsErrorCode JsGetPropertyNameFromId(JsPropertyId propertyId, out string name);
internal static extern JsErrorCode JsGetPropertyIdType(JsPropertyId propertyId,
out JsPropertyIdType propertyIdType);
internal static extern JsErrorCode JsCopyPropertyId(JsPropertyId propertyId, byte[] buffer,
UIntPtr bufferSize, out UIntPtr length);
/// <summary>
/// Sets an object's property
/// </summary>
/// <remarks>
/// Requires an active script context.
/// </remarks>
/// <param name="id">The ID of the property</param>
/// <param name="value">The new value of the property</param>
/// <param name="useStrictRules">The property set should follow strict mode rules</param>
public void SetProperty(JsPropertyId id, JsValue value, bool useStrictRules)
{
JsErrorHelpers.ThrowIfError(NativeMethods.JsSetProperty(this, id, value, useStrictRules));
}
internal static extern JsErrorCode JsGetSymbolFromPropertyId(JsPropertyId propertyId, out JsValue symbol);
internal static extern JsErrorCode JsGetProperty(JsValue obj, JsPropertyId propertyId, out JsValue value);
internal static extern JsErrorCode JsGetPropertyIdFromSymbol(JsValue symbol, out JsPropertyId propertyId);
internal static extern JsErrorCode JsGetPropertyIdFromName(string name, out JsPropertyId propertyId);