internal static JsDelegateFunction CombineDelegates(JsDelegateFunction del1, JsDelegateFunction del2)
{
if (del1 == null)
return del2;
if (del2 == null)
return del1;
var del = CreateMulticastDelegateFunction();
del.delegates = new JsArray<JsDelegateFunction>();
if (del1.isMulticastDelegate)
{
for (var i = 0; i < del1.delegates.length; i++)
del.delegates.push(del1.delegates[i]);
}
else
{
del.delegates.push(del1);
}
if (del2.isMulticastDelegate)
{
for (var i = 0; i < del2.delegates.length; i++)
del.delegates.push(del2.delegates[i]);
}
else
{
del.delegates.push(del2);
}
return del;
}
internal static JsDelegateFunction RemoveDelegate(JsDelegateFunction delOriginal, JsDelegateFunction delToRemove)
{
if (delToRemove == null || delOriginal == null)
{
return(delOriginal);
}
if (delOriginal.isMulticastDelegate)
{
if (delToRemove.isMulticastDelegate)
{
throw new NotImplementedException("Multicast to multicast delegate removal is not implemented yet");
}
var del = CreateMulticastDelegateFunction();
for (var i = 0; i < delOriginal.delegates.length; i++)
{
var del2 = delOriginal.delegates[i];
if (del2 != delToRemove)
{
if (del.delegates == null)
{
del.delegates = new JsArray <JsDelegateFunction>();
}
del.delegates.push(del2);
}
}
if (del.delegates == null)
{
return(null);
}
//del.delegates = delOriginal.delegates.splice(0, 0);//clone
if (del.delegates.length == 1)
{
return(del.delegates[0]);
}
return(del);
}
else
{
if (delToRemove.isMulticastDelegate)
{
throw new NotImplementedException("single to multicast delegate removal is not supported");
}
if (delOriginal == delToRemove)
{
return(null);
}
return(delOriginal);
}
}
static JsDelegateFunction CreateMulticastDelegateFunction()
{
JsDelegateFunction del2 = null;
var del = new JsNativeFunc <object>(delegate()
{
var x = undefined;
for (var i = 0; i < del2.delegates.length; i++)
{
var del3 = del2.delegates[i];
x = del3.apply(null, arguments.As <object[]>());
}
return(x);
}).As <JsDelegateFunction>();
del.isMulticastDelegate = true;
del2 = del;
return(del);
}
internal static JsDelegateFunction CombineDelegates(JsDelegateFunction del1, JsDelegateFunction del2)
{
if (del1 == null)
{
return(del2);
}
if (del2 == null)
{
return(del1);
}
var del = CreateMulticastDelegateFunction();
del.delegates = new JsArray <JsDelegateFunction>();
if (del1.isMulticastDelegate)
{
for (var i = 0; i < del1.delegates.length; i++)
{
del.delegates.push(del1.delegates[i]);
}
}
else
{
del.delegates.push(del1);
}
if (del2.isMulticastDelegate)
{
for (var i = 0; i < del2.delegates.length; i++)
{
del.delegates.push(del2.delegates[i]);
}
}
else
{
del.delegates.push(del2);
}
return(del);
}
internal static JsDelegateFunction RemoveDelegate(JsDelegateFunction delOriginal, JsDelegateFunction delToRemove)
{
if (delToRemove == null || delOriginal == null)
return delOriginal;
if (delOriginal.isMulticastDelegate)
{
if (delToRemove.isMulticastDelegate)
throw new NotImplementedException("Multicast to multicast delegate removal is not implemented yet");
var del = CreateMulticastDelegateFunction();
for (var i = 0; i < delOriginal.delegates.length; i++)
{
var del2 = delOriginal.delegates[i];
if (del2 != delToRemove)
{
if (del.delegates == null)
del.delegates = new JsArray<JsDelegateFunction>();
del.delegates.push(del2);
}
}
if (del.delegates == null)
return null;
//del.delegates = delOriginal.delegates.splice(0, 0);//clone
if (del.delegates.length == 1)
return del.delegates[0];
return del;
}
else
{
if (delToRemove.isMulticastDelegate)
throw new NotImplementedException("single to multicast delegate removal is not supported");
if (delOriginal == delToRemove)
return null;
return delOriginal;
}
}
