44 lines
1.1 KiB
C#
44 lines
1.1 KiB
C#
|
using System;
|
|||
|
|
using System.Runtime.InteropServices;
|
|||
|
|
using Foundation;
|
|||
|
|
using UIKit;
|
|||
|
|
|
|||
|
|
namespace Facebook.YogaKit
|
|||
|
|
{
|
|||
|
|
public static partial class YogaKit
|
|||
|
|
{
|
|||
|
|
static NSString YogaNodeKey = new NSString("YogaNode");
|
|||
|
|
|
|||
|
|
public static IYogaLayout Yoga(this UIView view)
|
|||
|
|
{
|
|||
|
|
return YogaLayoutNative(view);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
static IYogaLayout YogaLayoutNative(UIView view)
|
|||
|
|
{
|
|||
|
|
var yoga = ObjCRuntime.Runtime.GetNSObject(objc_getAssociatedObject(view.Handle, YogaNodeKey.Handle)) as YogaLayout;
|
|||
|
|
if (yoga == null)
|
|||
|
|
{
|
|||
|
|
yoga = new YogaLayout(view);
|
|||
|
|
objc_setAssociatedObject(view.Handle, YogaNodeKey.Handle, yoga.Handle, AssociationPolicy.RETAIN_NONATOMIC);
|
|||
|
|
}
|
|||
|
|
return yoga;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
[DllImport("/usr/lib/libobjc.dylib")]
|
|||
|
|
static extern void objc_setAssociatedObject(IntPtr @object, IntPtr key, IntPtr value, AssociationPolicy policy);
|
|||
|
|
|
|||
|
|
[DllImport("/usr/lib/libobjc.dylib")]
|
|||
|
|
static extern IntPtr objc_getAssociatedObject(IntPtr @object, IntPtr key);
|
|||
|
|
|
|||
|
|
enum AssociationPolicy
|
|||
|
|
{
|
|||
|
|
ASSIGN = 0,
|
|||
|
|
RETAIN_NONATOMIC = 1,
|
|||
|
|
COPY_NONATOMIC = 3,
|
|||
|
|
RETAIN = 01401,
|
|||
|
|
COPY = 01403,
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|