I'm trying to figure out how to check whether the page has fully loaded in Playwright. await page.waitForLoadState('networkidle'); doesn't always work for me on Javascript-heavy sites. I've resorted to taking a screenshot base64, waiting 100 ms, taking a new screenshot, and comparing whether those are the same. However this doesn't seem ideal, is there any way to ask Playwright when the last animation frame was redrawn?
There are several options that may help you.
1. Solution 1:
First, you can maybe determine which element is loading last, and then go with
page.waitForSelector('yourselector')
or even wait for multiple selectors to appear
page.waitForSelector('yourselector1','yourselector2')
2. Solution 2
page.waitForLoadState('domcontentloaded')
Because
page.waitForLoadState('networkidle')
by default will wait for network event and if 0.5 seconds nothing is network trafficking it will say, I am no longer need to wait. And that is why you maybe have stohastic beh.
If the given solution doesn't work for you, you can try with locator.
page.locator(selector[, options])
It has multiple api like locator.isDisabled or locator.waitFor([options]) or locator.isVisible([options]) or locator.frameLocator(selector) ....... a lot more.
see the below link here:
https://playwright.dev/docs/api/class-locator
Related
I'm looking for an event fired by polymer-layout when it's finished laying out, similar to the polymer-grid-layout event. Doesn't seem to be one. Am I missing something?
After my attempts at polymer-grid-layout (Autosizing canvas inside a polymer grid layout) I've decided to convert everything to nested polymer-layouts instead. After a few hiccups (e.g. the dart version of polymer-layout doesn't work if you put polymer-layout as an element directly under template, whereas the js version does - don't know which is wrong) the approach seems to be working.
The one exception is that I was previously relying on polymer-grid-layout to tell me when the canvas had been resized properly. But with polymer-layout I have the same timing problem but without the same solution it appears.
Any way around this?
thanks
Anders
Dart polymer_element/polymer_ui_element are a bit outdated. I'll take a look at what changes were be made in JS polymer-layout since I last revisited Dart polymer-layout (probably Mo/Di).
Can you please create an issue in https://github.com/ErikGrimes/polymer_elements so you get notified when the update is made.
You are right that polymer-layout is missing a layout event. I filed an issue here https://github.com/Polymer/polymer-layout/issues/3
In the meantime, you should be able to capture the timeline in attached.
attached: function() {
this.async(function() {
this.async(this.layoutHappened);
});
},
layoutHappened: function() {
}
I used nested async because I don't want to worry about whose attached is called first (this one, or the one in the polymer-layout). And yes, this is exactly the kind of fiddly construction that is avoided by having an event.
In this railscast our good friend Mr. Bates walks through a solution to creating an app that can search, sort, and paginate a set of data. When going through AJAX searching he provides a solution that will display results of the search the moment a user enters input into the search box. Here is his solution:
$('#products_search input').keyup(function () {
$.get($('#products_search').attr('action'), ↵
$('#products_search').serialize(), null, 'script');
return false;
});
However he states "Note that this is only a quick demo and isn’t the best way to do this. There are several jQuery plugins that you can use if you do something like this in a production app." I'm looking for an explanation on why he believes this isn't suitable for production. Thanks in advance!
There are two major issues I see with this solution. The first is that you are making an HTTP (AJAX) request every time a key is pressed, which will not be the most efficient way of doing this. The second is that you are basically calling eval in the response, and eval is bad as it can lead to malicious users executing code you don't want to be executed.
Some suggestions on improving:
Use a proper JSON parser and pass the data back as JSON. (you can use $.getJSON)
Throttle the request - don't do it on every keyUp, maybe start a timer and only submit the request if no keys have been pressed in the last second, meaning it won't make lots of calls for people who type fast.
Cache the response. If you have already searched for something, then there is no point fetching the data twice. Keep a note (in a JS Object) of previous calls in this session and their results.
I have a ListView:TListview on my form ,and, I add many values(approximately 25k TListViewItem) ,which works quite fast,but when I call Listview.Clear,the program freezes.I checked it with debugger,it won't step that line.
My question is: how do I solve my problem? If creating so many items in less than a second is possible,why deleting them takes forever(I waited over 5 minutes)?
Have you tried enclosing your call to Clear in a BeginUpdate/EndUpdate block:
listview.Items.BeginUpdate;
try
listview.Items.Clear;
finally
listview.Items.EndUpdate;
end;
Adding/Removing items in a listview (or various other controls, e.g. listbox) triggers a GUI update of the control for each and every item that is added/removed. For a listview in particular, this can be quite expensive and for 25,000 items the overhead would be significant.
Admittedly 5 minutes does sound excessive, but this would be the first thing I would try.
The first thing I'd try is wrap your call to Clear with BeginUpdate/EndUpdate.
ListView1.Items.BeginUpdate;
ListView1.Clear;
ListView1.Items.EndUpdate;
Do you have any events attached to the ListView, and are they firing as the list is being cleared?
as the others noted a BeginUpdate .... EndUpdate will greatly increase performance, however I would really suggest you move your code to use VirtualTreeView. It's a hybrit tree/ListView which will add up to 1m nodes in less than a second (actually that depends on the processor, but you get the idea).
It's a bit harder to learn in the beginning but once you get used to it you'll find it "easy" to work with. I personally whenever I need many rows in a ListView or TreeView look no further than VirtualTreeView. Oh, and forgot to mention that on top of it, it's free. Try it from : http://soft-gems.net/
John, it should not be longer to clear than to add the 25k items.
I wonder if you load it while it is not visible (automatically disabling updates), but clear it when it is visible where each item deletion triggers an update.
I don't know whether I should delete this question or not,I believe it's not going to be in any use to anyone else,but I prefer to keep it for awhile at least for you,who answered.
The problem was that I used a component inheriting from TListView,I thought It wouldn't be a problem so I decided to say TListView,but I was wrong.
I upvoted all your answers, please excuse my ignorance - I'm new.
How do you make a combo of two emotes in lua in World of Warcraft work?
function Button2_OnClick()
PlaySoundFile("Interface\\Addons\\Fart\\common_fart[1].wav");
DoEmote("moon");
DoEmote("sit");
DoEmote("dance");
DoEmote("beckon");
end
I am using Wow Addon Studio to make a fart application on Wow.
I used this function, and only the sit motion showed, and beckon and moon only showed on the chat window. The dance emote didn't show up anywhere.
Blizzard has explicitly prohibited anything that can be used to make lua wait or pause because it is an essential ingredient to making a gold mining or grinding bot.
There isn't a native (i.e. lua only) way to have lua wait without using all the CPU. Outside of the WOW client, you'd use win.sleep or some other 3rd party API call that calls into the host application or operating systems threading functions.
It may be possible to simulate a wait by having code execute on a frequent event (such as text arriving at the chat window) and then in the event handler checking to see if enough time has passed to permit executing the next command in the sequence. This probably wouldn't be a very accurate timer and it would be rather complex as you'd have to create a data structure to hold the sequence of commands, the timings between each, the current command, etc. and so on.
This may be an intentional limitation of the API to prevent in game automation (botting).
What has worked for me is to have a global variable that is incremented through the loop. Such as
Integer count = 0;
function Button2_OnClick()
i++
switch
case(1)
PlaySoundFile("Interface\\Addons\\Fart\\common_fart[1].wav");
case(2)
DoEmote("moon");
case(3)
DoEmote("sit");
case(4)
DoEmote("dance");
case(5)
DoEmote("beckon");
default
i=0;
end
end
What you would have to do then is to click the button multiple times, but you would get the effect you're going for.
I would suggest you wait some time before doing the next emote. As far as I know, the server disconnects you if you spam too much. This might just trigger it sometimes.
Besides that, I guess maybe the client has a way of preventing it? In either case, I would suggest you add some sort of fraction-of-a-second delay between the emotes.
Cheers,
Amit Ron
Could it be that the last two can't be done while sitting?
infact, integer i = 0, because defining integer 'count' and then using i is incorrect. :)
New to RxSwift / Reactivex. Basically what I'm trying to do is to make a server call whenever something happens, but make sure it's not done more often than every 10 seconds. Less often if possible.
For instance, whenever an event ("needs update") is generated I'd like to call the server immediately if more than 10 seconds have passed since my last call. If less time has passed I'd like to make the call on the 10 second mark from the last one. It doesn't matter how many events have been generated within these 10 seconds.
I looked at the description of throttle but it appears to starve if events happen very quickly, which isn't desirable.
How can I achieve this?
There's a proposed new operator for RxSwiftExt that would give you something you're looking for, I think. However, it doesn't exist yet. You might want to keep an eye on it, though.
https://github.com/RxSwiftCommunity/RxSwiftExt/issues/10