public void Dispose(JSWrapper et)
{
try
{
Element e = et.As <Element>();
WAContext.SetAtomControl(e, null);
WAContext.SetLogicalParent(e, null);
WAContext.SetTemplateParent(e, null);
//if (e is Page page)
//{
// // we need to remove this page if the page is on the stack...
// try
// {
// // WAContext.(page);
// }
// catch (Exception ex)
// {
// System.Diagnostics.Debug.WriteLine(ex);
// }
//}
}
catch (Exception ex) {
System.Diagnostics.Debug.WriteLine(ex);
}
}
public JSDisposable WatchProperty(JSWrapper objTarget, string name, JSValue events, JSFunction callback)
{
object obj = objTarget.As <object>();
if (obj is INotifyPropertyChanged element)
{
var pinfo = obj.GetProperty(name);
PropertyChangedEventHandler handler = (s, e) =>
{
if (e.PropertyName == name)
{
var value = pinfo.GetValue(obj);
callback.Call(null, new Java.Lang.Object[] { value.Wrap(Engine) });
}
};
element.PropertyChanged += handler;
return(new JSDisposable(Engine, () =>
{
element.PropertyChanged -= handler;
}));
}
return(new JSDisposable(Engine, () => { }));
}
public void VisitDescendents(JSWrapper target, JSFunction action)
{
Element element = target?.As <Element>();
if (element == null)
{
throw new ObjectDisposedException("Cannot visit descendents of null");
}
var views = element as IViewContainer <View>;
if (views == null)
{
return;
}
foreach (var e in views.Children)
{
var ac = WAContext.GetAtomControl(e);
var child = e.Wrap(Engine);
var r = action.Call(null, new Java.Lang.Object[] {
child,
(JSValue)ac
});
if ((bool)r.IsUndefined() || (bool)r.IsNull() || !((bool)r.ToBoolean()))
{
continue;
}
VisitDescendents(JSWrapper.Register(e), action);
}
}
public JSValue AtomParent(JSWrapper target, JSValue climbUp)
{
Element element = target.As <Element>();
bool cu = !((bool)climbUp.IsUndefined()) && !((bool)climbUp.IsNull()) && (bool)climbUp.ToBoolean();
if (cu)
{
element = element.Parent;
if (element == null)
{
return(null);
}
}
do
{
var e = WAContext.GetAtomControl(element);
if (e != null)
{
return(e.Wrap(Engine));
}
element = element.Parent;
} while (cu && element != null);
return(null);
}
public void SetTemplate(JSWrapper elementWrapper, string name, JSFunction factory)
{
var element = elementWrapper.As <Element>();
PropertyInfo p = element.GetType().GetProperty(name);
p.SetValue(element, new DataTemplate(() => {
try
{
var ac = (factory.Call(null) as JSValue).ToObject();
var eid = ac.GetJSPropertyValue("element");
var e = JSWrapper.FromKey(eid.ToString()).As <View>();
return(new TemplateView
{
View = e,
SetBindingContext = (obj) =>
{
ac.SetJSPropertyValue("data", (Java.Lang.Object)obj);
}
});
}
catch (Exception ex) {
System.Diagnostics.Debug.WriteLine(ex);
throw;
}
}));
}
public Element FindChild(JSWrapper rootTarget, string name)
{
Element root = rootTarget.As <Element>();
var item = root.FindByName <Element>(name);
//var v = new ObjectReferenceWrapper(engine) {Target = item };
//return v;
return(item);
}
public JSValue GetValue(JSWrapper viewTarget, string name)
{
Element view = viewTarget.As <Element>();
var pv = view.GetProperty(name);
var value = pv.GetValue(view);
return(value.Wrap(Engine));
// return null;
}
public void Close(JSWrapper wrapper, JSFunction success, JSFunction error)
{
Device.BeginInvokeOnMainThread(async() => {
try {
var e = wrapper.As <Element>();
await WebAtoms.WAContext.Current.PopAsync(e, true);
success.Call(null, new Java.Lang.Object[] { });
} catch (Exception ex) {
error.Call(null, new Java.Lang.Object[] { ex.ToString() });
}
});
}
public JSValue TemplateParent(JSWrapper elementTarget)
{
Element element = elementTarget.As <Element>();
do
{
var e = WAContext.GetTemplateParent(element);
if (e != null)
{
return(e.Wrap(Engine));
}
element = element.Parent;
} while (element != null);
return(null);
}
public void AttachControl(JSWrapper target, JSValue control)
{
Element element = target.As <Element>();
var ac = WAContext.GetAtomControl(element);
if (ac != null)
{
if (ac == control as object)
{
return;
}
throw new InvalidOperationException("Control already attached");
}
WAContext.SetAtomControl(element, control);
}
public void SetImport(JSWrapper elementWrapper, string name, JSFunction factory)
{
var element = elementWrapper.As <Element>();
var d = WAContext.GetImports(element);
if (d == null)
{
d = new Dictionary <string, Func <Element> >();
WAContext.SetImports(element, d);
}
d[name] = () => {
var t = WAContext.GetAtomControl(element);
var jv = factory.Call((JSObject)t.Wrap(Engine)) as JSValue;
return(JSWrapper.FromKey(jv.ToObject().GetJSPropertyValue("element").ToString()).As <Element>());
};
}
public static JSValue Wrap(this object value, JSContext context)
{
if (value == null)
{
return(null);
}
if (value is JSValue jv)
{
return(jv);
}
if (value is string s)
{
return(new JSValue(context, s));
}
if (value is int i)
{
return(new JSValue(context, i));
}
if (value is float f)
{
return(new JSValue(context, f));
}
if (value is double d)
{
return(new JSValue(context, d));
}
if (value is decimal dec)
{
return(new JSValue(context, (double)dec));
}
if (value is bool b)
{
return(new JSValue(context, b));
}
if (value is DateTime dt)
{
return(dt.ToJSDate(context));
}
if (value is JSWrapper w)
{
return(new JSValue(context, w.Key));
}
return(new JSValue(context, JSWrapper.Register(value).Key));
}
public void LoadContent(JSWrapper elementTarget, string content)
{
try
{
Element element = elementTarget.As <Element>();
if (element is View v)
{
v.LoadFromXaml(content);
}
else if (element is Page p)
{
p.LoadFromXaml(content);
}
// (element as View).LoadFromXaml(content);
}
catch (Exception ex) {
System.Diagnostics.Debug.WriteLine(ex);
throw;
}
}
public JSDisposable AddEventHandler(
JSWrapper elementTarget,
string name, JSFunction callback, bool?capture)
{
Element element = elementTarget.As <Element>();
var e = element.GetType().GetEvent(name);
if (e == null)
{
var disposable = WAContext.Current.AddEventHandler(element, name, () => {
try
{
callback.Call(null);
}
catch (Exception ex) {
System.Diagnostics.Debug.WriteLine(ex);
Engine.ThrowJSException(new JSException(Engine, ex.Message));
}
});
return(new JSDisposable(Engine, () => {
disposable.Dispose();
}));
}
var pe = new AtomDelegate()
{
callback = callback
};
var handler = Delegate.CreateDelegate(e.EventHandlerType, pe, AtomDelegate.OnEventMethod);
e.AddEventHandler(element, handler);
return(new JSDisposable(Engine, () => {
e.RemoveEventHandler(element, handler);
pe.callback = null;
}));
}
public static JSWrapper Register(object obj)
{
if (obj == null)
{
throw new ArgumentNullException("Cannot register null");
}
if (obj is JSWrapper w)
{
return(w);
}
JSWrapper wrapper = null;
string key = null;
if (obj is Element e)
{
key = WAContext.GetJSRefKey(e);
if (key == null)
{
key = GenerateKey(obj);
WAContext.SetJSRefKey(e, key);
lock (wrappers)
{
wrappers[key] = wrapper = new JSWrapper(new WeakReference(obj), key);
}
}
else
{
wrapper = wrappers[key];
}
return(wrapper);
}
lock (wrappers)
{
key = GenerateKey(obj, true);
wrappers[key] = wrapper = new JSWrapper(new WeakReference(obj), key);
}
return(wrapper);
}
public JSValue ElementParent(JSWrapper elementTarget)
{
Element element = elementTarget.As <Element>();
return(element.Parent?.Wrap(Engine));
}
public void SetRoot(JSWrapper wrapper)
{
WAContext.Current.CurrentPage = wrapper.As <Page>();
}
public static object ToType(this JSValue value, Type type)
{
if (value != null)
{
if ((bool)value.IsNull() || (bool)(value.IsUndefined()))
{
return(null);
}
}
if (type == typeof(int))
{
if (value == null)
{
return(0);
}
return(value.ToNumber().IntValue());
}
if (type == typeof(short))
{
if (value == null)
{
return(0);
}
return(value.ToNumber().ShortValue());
}
if (type == typeof(float))
{
if (value == null)
{
return(0);
}
return(value.ToNumber().FloatValue());
}
if (type == typeof(double))
{
if (value == null)
{
return(0);
}
return(value.ToNumber().DoubleValue());
}
if (type == typeof(bool))
{
if (value == null)
{
return(0);
}
return((bool)value.ToBoolean());
}
if (type == typeof(DateTime))
{
if (value == null)
{
return(DateTime.MinValue);
}
return((value as JSDate).ToDateTime());
}
if (value == null)
{
return(null);
}
if (type == typeof(string))
{
return(value.ToString());
}
if (type == typeof(JSFunction) || type.IsSubclassOf(typeof(JSFunction)))
{
return(value.ToFunction());
}
if (type == typeof(JSWrapper))
{
return(JSWrapper.FromKey(value.ToString()));
}
if (value is JSArray j)
{
if (type == typeof(System.Collections.IEnumerable))
{
return(new AtomEnumerable(j));
}
// type is IList...
var list = Activator.CreateInstance(type) as System.Collections.IList;
for (int i = 0; i < j.Size(); i++)
{
Type itemType = type.GetGenericArguments()[0];
list[i] = (j.Get(i) as JSValue).ToType(itemType);
}
return(list);
}
if (type == typeof(JSObject))
{
return(value.ToObject());
}
if (type == typeof(JSValue) || type.IsSubclassOf(typeof(JSValue)))
{
return(value);
}
return(null);
}
public void SetValue(JSWrapper target, string name, JSValue value)
{
Element view = target.As <Element>();
if (view != null && name.Equals("name", StringComparison.OrdinalIgnoreCase))
{
WAContext.SetWAName(view, name);
return;
}
bool isNull = (bool)value.IsNull() || (bool)value.IsUndefined();
var pv = view.GetProperty(name);
if (isNull)
{
pv.SetValue(view, null);
return;
}
var pt = pv.PropertyType;
if (pt == typeof(string))
{
pv.SetValue(view, value.ToString());
return;
}
// check if it is an array
if ((bool)value.IsArray())
{
var old = pv.GetValue(view);
if (old is IDisposable d)
{
d.Dispose();
}
var array = value.ToJSArray();
pv.SetValue(view, new AtomEnumerable(array));
return;
}
pt = Nullable.GetUnderlyingType(pt) ?? pt;
if (value is JSDate date)
{
// conver to datetime and set...
pv.SetValue(view, date.ToDateTime());
return;
}
if (pt.IsValueType)
{
object clrValue = null;
// convert...
if (value.IsBoolean().BooleanValue())
{
clrValue = value.ToBoolean().BooleanValue();
}
else if (value.IsNumber().BooleanValue())
{
if (pt == typeof(double) || pt == typeof(float) || pt == typeof(short))
{
clrValue = value.ToNumber().DoubleValue();
}
else
{
clrValue = value.ToNumber().LongValue();
}
}
var v = Convert.ChangeType(clrValue, pt);
pv.SetValue(view, v);
return;
}
else
{
if (pv.PropertyType == typeof(ICommand))
{
pv.SetValue(view, new AtomCommand(() => {
value.ToFunction().Call(null);
}));
}
else
{
pv.SetValue(view, value.ToObject());
}
}
}
