Alex, I had some session yesterday with that and I think I have found the reason. It is connected with how MDL is working. Let's start from the initial code
This is how code looks like: <js:View> -> After translation -> <div> <mdl:NavigationLayout currentState="Examples" className.Examples="examplesBackground"></mdl:NavigationLayout> -> after translation -> <div> </js:View> In above case the parent of NavigationLayout should be, a View, but it isn't. Each MDL component is going through some kind of invalidation mechanism - it's called upgrading. Sometime in the results of upgrading MDL library is adding additional containers. In above case our translated code should looks like: <div> <div class="examplesBackground"></div> </div> BUT it looks like that: <div> <div class="mdl-layout__container"> - This ELEMENT is not a Royale creation. It doesn't have royale_wrapper. <div class="examplesBackground"></div> </div> </div> Initial state is setting up correctly along with initial class " examplesBackground" - However changes are not possible because we are checking whether parent exists and it exists but it's not a Royale component. I'm not sure how to fix that yet. Thanks, Piotr 2018-05-01 22:26 GMT+02:00 Alex Harui <aha...@adobe.com.invalid>: > An element without a royale_wrapper breaks the fundamental contract in > UIBase. I recommend that you figure that part out. > > Good luck, > -Alex > > On 5/1/18, 12:33 PM, "Piotr Zarzycki" <piotrzarzyck...@gmail.com> wrote: > > In the other words - My website is loaded and component have initial > state. > > Than I'm clicking on the button I'm changing state for that component. > > Piotr > > On Tue, May 1, 2018, 7:27 PM Piotr Zarzycki <piotrzarzyck...@gmail.com > > > wrote: > > > This component is already on the display list. I'm changing States > of that > > component. That's the weirdest thing. > > > > Piotr > > > > On Tue, May 1, 2018, 7:06 PM Alex Harui <aha...@adobe.com.invalid> > wrote: > > > >> Hi Piotr, > >> > >> What is the call stack at that point? Should the component be on > the > >> display list or is it still having its properties set up per the > >> lifecycle? If it is just having its properties set up, there > should be > >> another call to setClassName in addedToParent and parent should not > be > >> undefined. > >> > >> -Alex > >> > >> On 5/1/18, 9:58 AM, "piotrz" <pio...@apache.org> wrote: > >> > >> Alex, > >> > >> I just checked getter for parent and royale_wrapper on element > is > >> undefined. > >> > >> < > >> https://na01.safelinks.protection.outlook.com/?url= > http%3A%2F%2Fapache-royale-development.20373.n8.nabble. > com%2Ffile%2Ft1%2Froyale_wrapper_undefined.png&data=02% > 7C01%7Caharui%40adobe.com%7C4df3cf45055440294eb908d5af84cc3e% > 7Cfa7b1b5a7b34438794aed2c178decee1%7C0%7C0%7C636607907300284114&sdata=% > 2BWvX%2B84oVUsWZO4Q3rO4QwPRnR1TcZJKseXYJB1ni8U%3D&reserved=0> > >> > >> > >> Piotr > >> > >> > >> > >> > >> > >> -- > >> Sent from: > >> https://na01.safelinks.protection.outlook.com/?url= > http%3A%2F%2Fapache-royale-development.20373.n8.nabble. > com%2F&data=02%7C01%7Caharui%40adobe.com%7C4df3cf45055440294eb908d5af84 > cc3e%7Cfa7b1b5a7b34438794aed2c178decee1%7C0%7C0% > 7C636607907300284114&sdata=W4AV3qDPNfO1VlCywDh5bd5u9Oa7Fh > 0JXDhzrFIp%2FMM%3D&reserved=0 > >> > >> > >> > > > -- Piotr Zarzycki Patreon: *https://www.patreon.com/piotrzarzycki <https://www.patreon.com/piotrzarzycki>*