event-listener

问题 I have the following structure within my firebase realtime database: artists ArtistID name listOfPaintings PaintingID1 PaintingID2 paintings (there can be PaintingID1 copies price PaintingID2 copies price ... PaintingIDX copies price Now I want to listen for changes of specific paintingIDs and specific ArtistIDs. For example I want to listen to PaintingID1, PaintingID6, PaintingID7, PaintingID11. My repository code so far: override fun observeThisPainting(painting: Painting,

问题 I am making a simple memory card game. If you click on two cards in a row that are the same they stay open. If you click on two cards in a row that are not the same they both close in 1.5s. For that I use setTimeout(); However, if during that 1.5s user clicks on any other card, event listener function starts running again while setTimeout have not finished running for the first time. This crashes the game. How to prevent other code from running until setTimeout finishes running for the first

问题 I am implementing OL for a GIS application and want to add a 20 seconds timeout when the user scrolled the map, after which the GPS auto track function should resume. For that I am utilizing the map.on('moveend', move_func(..)) listener. The problem is that it cannot differenciate whether the user scrolled or the position change came from map.setCenter(..). Although I could implement a state variable which is set to true every time map.setCenter() is called, this does not only seem un-elegant

问题 I am implementing OL for a GIS application and want to add a 20 seconds timeout when the user scrolled the map, after which the GPS auto track function should resume. For that I am utilizing the map.on('moveend', move_func(..)) listener. The problem is that it cannot differenciate whether the user scrolled or the position change came from map.setCenter(..). Although I could implement a state variable which is set to true every time map.setCenter() is called, this does not only seem un-elegant

问题 I am trying to detect value change from my Firebase Database. Here is my code for initializing the ValueEventListener: valueEventListener = new ValueEventListener() { @Override public void onDataChange(@NonNull DataSnapshot dataSnapshot) { try { String customerLocation = String.valueOf(dataSnapshot.getValue()); Point customerPoint = locationFounder.getPoint(customerLocation); if (customerPoint != null) { databaseReference.child("isActive").addValueEventListener(new ValueEventListener() {

问题 I am trying to detect value change from my Firebase Database. Here is my code for initializing the ValueEventListener: valueEventListener = new ValueEventListener() { @Override public void onDataChange(@NonNull DataSnapshot dataSnapshot) { try { String customerLocation = String.valueOf(dataSnapshot.getValue()); Point customerPoint = locationFounder.getPoint(customerLocation); if (customerPoint != null) { databaseReference.child("isActive").addValueEventListener(new ValueEventListener() {

问题 I am trying to detect value change from my Firebase Database. Here is my code for initializing the ValueEventListener: valueEventListener = new ValueEventListener() { @Override public void onDataChange(@NonNull DataSnapshot dataSnapshot) { try { String customerLocation = String.valueOf(dataSnapshot.getValue()); Point customerPoint = locationFounder.getPoint(customerLocation); if (customerPoint != null) { databaseReference.child("isActive").addValueEventListener(new ValueEventListener() {

问题 My problem is how pynput returns the data (I hope that's how you would say it?). So what I'm trying to do is have the listener record keyboard input, then use what letters are added to the list to make a string in word. Although, it seems like the letters aren't strings. Instead they return as pynput.keyboard._win32.KeyCode Is there a way to convert that to a python readable string or something? Like if: i typed f, t, w print(type(list[0]), word) return 'f', ftw what it comes out as so far is

问题 I have a listener attached to resize event on window object. Deeper in my code, I have some input fields. To avoid some issues on android devices, I’d like to prevent resize listeners from being fired when an input field is focused (android device resize browser window when opening keyboard, unlike IOS). main.js window.addEventListener(‘resize’, () => { // Some stuff here }); someFile.js field.addEventListener(‘input’, () => { // Here I want to disable the resize event only once }); I came

问题 I am working on a site that is heavily powered by AJAX/REST API calls, which broadcast events on completion/failure. What I am trying to accomplish is to listen for these document events and trigger a function in Selenium (Node.js) -- right now I'm settling for a console.log() -- and keep that listener running to report any new occurrences of the "customEvent" My latest implementation looks like this: driver = await new Builder().forBrowser('chrome').build(); await driver.get('http://www