internal override IPropertyEditorModel Create(XenProperty property)
{
var info = GetTypeEditorInfo(property.XenType);
if (info == null)
{
return(null);
}
var model = CreateTypeEditorModel(info);
if (model != null)
{
model.UseDefaultValue = true;
model.Property = property;
model.ToolboxValue = property.Value;
model.FullTypeName = property.XenType.FullName;
model.ShortTypeName = property.XenType.ShortName;
if (model.Property.XenType.Descriptor.HasFlag(XenPropertyDescriptors.AttachedProperty))
{
model.DisplayName = property.XamlPropertyName;
}
else
{
model.DisplayName = property.PropertyName;
}
}
return(model);
}
public void SetPossibleValues(XenProperty property)
{
if (property.Value == null)
{
return;
}
property.XenType.Descriptor = GetDescriptors(property.Value.GetType());
var entry = GetItem(property.Value.GetType());
if (entry?.Generator == null)
{
return;
}
var type = _typeFinder.Find(property.XenType.FullName);
if (type == null)
{
return;
}
property.XenType.PossibleValues = entry.Generator.Get(type);
if (property.XenType.PossibleValues?.Length > 0)
{
property.XenType.Descriptor |= XenPropertyDescriptors.Literals;
}
}
public void SetPossibleValues(XenReflectionProperty xRef, XenProperty xProp, Enum e)
{
if (xRef == null || xProp == null)
{
return;
}
xProp.XenType = CreateType(xRef);
var item = GetItem(xProp.XenType.GetType());
var gen = new EnumGenerator();
var result = gen.Get(e.GetType());
if (item != null)
{
xProp.XenType.Descriptor = item.Descriptor;
}
xProp.XenType.PossibleValues = result;
xProp.XenType.Descriptor |= XenPropertyDescriptors.Literals;
if (e.HasFlags())
{
xProp.XenType.Descriptor |= XenPropertyDescriptors.Flags;
}
}
public void SetPossibleValues(XenReflectionProperty xRef, XenProperty xProp)
{
if (xRef == null || xProp == null)
{
return;
}
xProp.XenType = CreateType(xRef);
var entry = GetItem(xProp.Value?.GetType());
if (entry?.Generator == null)
{
return;
}
var type = _typeFinder.Find(xProp.XenType.FullName);
if (type == null)
{
return;
}
xProp.XenType.PossibleValues = entry.Generator.Get(type);
if (xProp.XenType.PossibleValues?.Length > 0)
{
xProp.XenType.Descriptor |= XenPropertyDescriptors.Literals;
}
}
public void SetProperty(XenWidget widget, XenProperty property, object value, bool isBase64 = false, bool isAp = false, object metadata = null)
{
var r = XenMessage.Create <SetPropertyRequest>();
r.Metadata = metadata;
r.Path = property.Path;
r.Value = value;
r.WidgetId = widget.Id;
r.IsBase64 = isBase64;
r.IsAttachedProperty = isAp;
_socket.Send(r);
}
public void CallConstructor(string widgetId, XenProperty property, XenConstructor ctor)
{
if (ctor == null)
{
return;
}
var r = XenMessage.Create <CallConstructorRequest>();
r.Constructor = ctor;
r.Property = property;
r.WidgetId = widgetId;
_socket.Send(r);
}
protected override void OnExecute(XenMessageContext ctx)
{
if (ctx.Request == null)
{
return;
}
var req = ctx.Get <GetObjectRequest>();
if (req == null)
{
return;
}
var props = GetXenProperties(req.WidgetId, true, req.Path);
if (!props.Any())
{
return;
}
var prop = props[0];
if (prop.XenType.Descriptor.HasFlag(XenPropertyDescriptors.Enumerable))
{
if (prop.XenType.Descriptor.HasFlag(XenPropertyDescriptors.Enumerable))
{
// grab index value; if null, return without creating an ObjectResponse.
var index = ReflectionMethods.GetIndexerValue(req.Path[0]);
if (index == null)
{
return;
}
var item = ReflectionMethods.GetItem(prop.Value, index.Value);
prop.Value = GetXenProperties(item);
}
}
prop.Path = req.Path?.Union(prop.Path)?.ToArray();
var cantCast = SetPath(prop.Value, req.Path);
ctx.SetResponse <ObjectResponse>(res =>
{
res.UnknownCondition = cantCast;
res.Property = prop;
res.WidgetId = req.WidgetId;
res.ObjectName = XenProperty.GetLastPath(req.Path);
});
}
public void Test_flags_and_staticlist()
{
Dr.Add(typeof(FakeEnumWithFlags), XenPropertyDescriptors.None);
var t1 = FakeEnumWithFlags.Test1;
var xRef = new XenReflectionProperty
{
TargetType = typeof(FakeEnumWithFlags),
};
var xProp = new XenProperty
{
Value = t1
};
Dr.SetPossibleValues(xRef, xProp, t1);
Assert.IsTrue(xProp.XenType.Descriptor.HasFlag(XenPropertyDescriptors.Flags | XenPropertyDescriptors.Literals));
}
private Color Convert(XenProperty property)
{
var json = property.Value?.ToString();
if (string.IsNullOrWhiteSpace(json))
{
return(Colors.Transparent);
}
var xenProps = JsonConvert.DeserializeObject <XenProperty[]>(json);
var r = GetProperty(xenProps, "R");
var g = GetProperty(xenProps, "G");
var b = GetProperty(xenProps, "B");
var a = GetProperty(xenProps, "A");
if (r == -1 && g == -1 && b == -1 && a == -1)
{
return(new Color(0, 0, 0, 0));
}
return(new Color(r, g, b, a));
}
public XenProperty[] GetXenProperties(XenReflectionProperty[] refProps, bool includeValues = false)
{
if (refProps == null)
{
return(null);
}
if (SupportingTypes.Types == null)
{
return(null);
}
var result = new List <XenProperty>();
// The properties are in an intermediate state, right here.
// a XenReflectionProperty is not meant to be returned in a request.
// build xen properties.
foreach (var curRef in refProps)
{
if (curRef.IsTargetEnum && SupportingTypes.IsRegistered(typeof(Enum)))
{
if (!SupportingTypes.IsRegistered(curRef, RegistrarMatches.TypeName | RegistrarMatches.Enum))
{
continue;
}
}
else
{
if (!SupportingTypes.IsRegistered(curRef, RegistrarMatches.TypeName))
{
continue;
}
}
var xenProp = new XenProperty
{
Path = new[] { curRef.TargetName },
Value = curRef.GetTargetObject(),
CanRead = curRef.CanReadTarget,
CanWrite = curRef.CanWriteTarget
};
// is the current property an enumeration?
if (curRef.IsTargetEnum && SupportingTypes.IsRegistered(typeof(Enum)))
{
var value = curRef.As <Enum>();
if (value != null)
{
Descriptor.SetPossibleValues(curRef, xenProp, value);
if (xenProp.Value != null)
{
xenProp.Value = Enum.GetName(xenProp.Value.GetType(), value);
}
}
}
else
{
Descriptor.SetPossibleValues(curRef, xenProp);
// non-primitive structures (not System.DateTime, but Xamarin.Forms.Point)
if (ReflectionMethods.IsNotPrimitiveValueType(xenProp.Value))
{
xenProp.XenType.Descriptor |= XenPropertyDescriptors.ValueType;
var vtProps = XenPropertyMethods
.GetPrimitiveValueTypeProperties(xenProp.Value)
.ToArray();
if (vtProps.Length != 0)
{
foreach (var vtProp in vtProps)
{
Descriptor.SetPossibleValues(vtProp);
if (vtProp.Value.GetType() != typeof(string))
{
var tmp = Convert.ToString(vtProp.Value ?? string.Empty);
vtProp.Value = tmp;
}
}
// don't return values to the toolbox that will never be used.
xenProp.Value = includeValues ? vtProps : null;
}
}
// enumerables, collections, list.
if (curRef.TargetType.IsKindOf(typeof(ICollection <>)))
{
xenProp.XenType.Descriptor |= XenPropertyDescriptors.Collection;
}
if (curRef.TargetType.IsKindOf(typeof(IList <>)))
{
xenProp.XenType.Descriptor |= XenPropertyDescriptors.List;
}
if (curRef.TargetType.IsKindOf(typeof(IEnumerable <>)))
{
xenProp.XenType.Descriptor |= XenPropertyDescriptors.Enumerable;
var collection = xenProp.Value as IEnumerable <object>;
if (collection != null)
{
var count = collection.Count();
xenProp.XenType.PossibleValues = new[] { count.ToString() };
if (includeValues == false)
{
// don't send the value back to the toolbox
xenProp.Value = null;
}
}
}
/*
* obj support?
* if (!curRef.TargetType.GetTypeInfo().IsValueType && !curRef.TargetType.GetTypeInfo().IsPrimitive)
* {
* if (!curRef.TargetType.Namespace.StartsWith("System"))
* {
* var oProps = XenPropertyMethods
* .GetObjectProperties(xenProp.Value)
* .ToArray();
*
* if (oProps.Length != 0)
* {
* foreach (var oProp in oProps)
* {
* Descriptor.SetPossibleValues(oProp);
*
* if (oProp.Value != null && oProp.Value.GetType() != typeof(string))
* {
* var tmp = Convert.ToString(oProp.Value ?? string.Empty);
* oProp.Value = tmp;
* }
* }
*
* // don't return values to the toolbox that will never be used.
* xenProp.Value = includeValues ? oProps : null;
* }
* }
* }
*/
}
result.Add(xenProp);
}
return(result.ToArray());
}
protected void SetPropertyValue(string rWidgetId, string[] rPath, object rValue, bool rIsBase64, bool rIsAttachedProperty)
{
var ignoreSet = false;
var targetPropName = XenProperty.GetLastPath(rPath);
var pair = Surface[rWidgetId];
AttachedPropertyInfo targetAttachedProp = null;
XenReflectionProperty targetProp;
if (rIsAttachedProperty)
{
var apAncestors = ElementHelper.GetParents(pair.XenWidget);
var apInfos = new List <AttachedPropertyInfo>();
foreach (var ancestor in apAncestors)
{
var aView = Surface[ancestor.Id];
if (aView == null)
{
continue;
}
apInfos.AddRange(ElementHelper.GetAttachedProperties(aView.VisualElement));
}
if (apInfos.Count == 0)
{
return;
}
targetAttachedProp = apInfos.LastOrDefault(a => a.PropertyName == targetPropName);
if (targetAttachedProp == null)
{
return;
}
object apParent = null;
object apGrandParent = null;
if (apAncestors.ElementAtOrDefault(0) != null)
{
apParent = Surface[apAncestors[0].Id].VisualElement;
}
if (apAncestors.ElementAtOrDefault(1) != null)
{
apGrandParent = Surface[apAncestors[1].Id].VisualElement;
}
targetProp = targetAttachedProp.Convert(apParent, apGrandParent);
}
else
{
targetProp = pair?
.VisualElement?
.GetXenRefProperties(rPath)
.FirstOrDefault();
if (targetProp == null)
{
return;
}
}
if (targetPropName != null && targetPropName.Contains("Color"))
{
rValue = Color.FromHex(rValue.ToString());
}
// todo: make into a serializer
if (targetPropName != null && targetPropName.Contains("Source"))
{
if (!rIsBase64)
{
return;
}
var bytes = Convert.FromBase64String(rValue.ToString());
var src = new XenImageSource(ImageSource.FromStream(() => new MemoryStream(bytes)))
{
FileName = _req.Metadata?.ToString()
};
rValue = src;
}
// get enumeration value
if (targetProp.IsTargetEnum)
{
var eval = ReflectionMethods.CreateEnum(targetProp.TargetType, rValue);
if (eval == null)
{
ignoreSet = true;
}
else
{
rValue = eval;
}
}
if (!ignoreSet)
{
DesignThread.Invoke(() =>
{
// if target property is part of a structure and we're modifying its properties
// 1) make a copy of the current value
// 2) change the property value
// 3) reassign it
if (ReflectionMethods.IsValueType(targetProp.ParentObject))
{
var childProp = targetProp
.ParentObject
.GetXenRefProperties()
.FirstOrDefault(p => p.TargetName == targetPropName);
childProp?.SetTargetObject(rValue);
var copy = childProp?.ParentObject;
var parentInfo = targetProp
.GrandParentObject?
.GetType()
.GetProperty(targetProp.ParentName);
parentInfo?.SetValue(targetProp.GrandParentObject, copy);
// supporting View -> Struct -> Struct -> Target (valuetype or ref)
if (ReflectionMethods.IsValueType(targetProp.GrandParentObject))
{
if (rPath.Length == 3)
{
targetProp
.GrandParentObject?
.GetType()
.GetProperty(targetProp.ParentName)
.SetValue(targetProp.GrandParentObject, targetProp.ParentObject);
pair.VisualElement
.GetType()
.GetProperty(rPath[0])
.SetValue(pair.VisualElement, targetProp.GrandParentObject);
}
}
}
// this is assinging a field
else if (targetProp.IsTargetStruct && rValue is string)
{
var fieldName = rValue.ToString() ?? string.Empty;
var fieldInfo = targetProp.TargetType.GetStaticFields().FirstOrDefault(f => f.Name == fieldName);
if (fieldInfo == null)
{
if (rIsAttachedProperty)
{
SetAttachedProperty(rValue, targetAttachedProp, pair);
}
else
{
targetProp.SetTargetObject(rValue);
}
}
else
{
var copy = fieldInfo.GetValue(null);
if (rIsAttachedProperty)
{
SetAttachedProperty(copy, targetAttachedProp, pair);
}
else
{
targetProp.SetTargetObject(copy);
}
}
}
else
{
// one last attempt
if (rIsAttachedProperty)
{
SetAttachedProperty(rValue, targetAttachedProp, pair);
}
else
{
targetProp.SetTargetObject(rValue);
}
}
});
}
}
internal abstract IPropertyEditorModel Create(XenProperty property);
protected override void OnExecute(XenMessageContext ctx)
{
if (ctx.Request == null)
{
return;
}
var req = ctx.Get <GetAttachedPropertiesRequest>();
if (req == null)
{
return;
}
var target = Surface[req.WidgetId];
var all = new List <XenProperty>();
var parents = ElementHelper.GetParents(target.XenWidget);
foreach (var parent in parents)
{
var view = Surface[parent.Id].VisualElement;
var aps = ElementHelper.GetAttachedProperties(view).ToArray();
if (aps == null || aps.Length == 0)
{
continue;
}
foreach (var ap in aps)
{
// skip dupe attached props
var processed = all.Any(a => a.XamlPropertyName == ap.XamlPropertyName);
if (processed)
{
continue;
}
var xt = Descriptor.CreateType(ap.GetMethod);
xt.Descriptor |= XenPropertyDescriptors.AttachedProperty;
var apval = ap.GetMethod.Invoke(null, new object[] { target.VisualElement });
var xp = new XenProperty
{
XamlPropertyName = ap.XamlPropertyName,
CanWrite = true,
CanRead = true,
XenType = xt,
Value = apval,
Path = new[] { ap.Field.Name }
};
all.Add(xp);
}
}
target.XenWidget.AttachedProperties = all.ToArray();
ctx.SetResponse <GetAttachedPropertiesResponse>(r =>
{
r.Widget = target.XenWidget;
});
}
