Custom ui node: how to get synchronisation between sessions and after page refresh

[Christian-Me]

Finally I found out how to do this with custom ui nodes. If you set the storeFrontEndInputAsState to truethe dashboard does the work for you. It will pass the last state and every new state to all connected clients as normal messages. A little bit tricky (at lest for me) is how to determine if the origin of a message is actual the own message sent by the client to avoid undesired loops. But in the end I found a solution (I think)

[ANNOUNCE] colour picker widget based on iro.js

node-red-contrib-ui-iro-color-picker Alternative color picker node utilizing the iro.js widget. The main credit goes to James for the iro.js widget. I was searching for a colour picker which is usable in different ways and on mobile devices for a long time. iro.js popped up in the forum from time to time and to be honest I hoped that someone else (with more experience) could do the job. In the end I was procrastinating other jobs and thought it would be a nice small project to learn how to i…