Let’s review a few useful concepts about scrolling first: scrollHeight: total container size. scrollTop: amount of scroll user has done. clientHeight: amount of container a user sees. When should you scroll? User has loaded messages for the first time. New messages have arrived and you are at the bottom of the scroll (you don’t want … Read more
This is a rather basic example but it should explain all of the fundamentals you require. Most of the solution lies within + adjacent sibling selector. In this case, it’s used to apply a different border radius to multiple messages in a row from the same person. ul{ list-style: none; margin: 0; padding: 0; } … Read more
every time I close a client, the server stops working. I get an error message, that it is “unable to read beyond the end of the stream” This is, in some sense, completely normal. That is, when using BinaryReader, its normal behavior is to throw EndOfStreamException when reaching the end-of-stream. Why did it reach end-of-stream? … Read more
You have to create a room with conversation_id and make users to subscribe to that room, so that you can emit a private message to that room it by, client var socket = io.connect(‘http://ip:port’); socket.emit(‘subscribe’, conversation_id); socket.emit(‘send message’, { room: conversation_id, message: “Some message” }); socket.on(‘conversation private post’, function(data) { //display data.message }); Server socket.on(‘subscribe’, … Read more
You can add below 2 lines into your gradle.properties file: android.useAndroidX=true android.enableJetifier=true Note to check, to not repeat any line that already exists (and ensure existing are true). Details: If you want to use androidx-namespaced libraries in a new project, you need to set the compile SDK to Android 9.0 (API level 28) or higher … Read more
Scroll to bottom of div?
Use ListModel if you want to change the content of a JList dynamically. DefaultListModel listModel = new DefaultListModel(); JList list = new JList(listModel); listModel.addElement(“item”); listModel.addElement(“another item”);