How do I prevent #click event when triggering #touchstart via alpine.js - touch-event

I am using alpine.js with the following code:
<a href="#home" #click="myFunction(event)"
#touchstart.prevent="myFunction(event)">
My Link
</a>
...
function myFunction(ev) {
console.log(ev.type + ' -> myfunc');
}
I am expecting the console to only output:
touchstart-> myfunc
However, it is still triggering the click event and the output is:
touchstart-> myfunc
click -> myfunc
I have also tried #touchstart.stop but to no avail. Any ideas as to what's going on or if I'm doing something wrong?
Update:
Originally I was testing via Firefox's dev tools. However, when I tried on Chromium's dev tools, the touch/click events behaved as expected. This means it could be a bug in the way Firefox dev tools handles touch/click events.

What comes to mind is that stopping propagation of a touch event won't stop the click event from triggering.
To deal with this userland using Alpine.js, you probably need to set an "isTouch" or equivalent flag, and while the touch is happening, ignore clicks.
Eg.
<div x-data="{ isTouch: false }">
<a href="#home" #click="!isTouch && myFunction($event)"
#touchstart.prevent="isTouch = true; myFunction($event)">
My Link
</a>
</div>

Related

Testing a vuetify on rails project with capybara selenium

I often use this site but it had never happened to me to ask a question. Now I am blocked and so it is time to ask the first one.
I need to test a sign up form created with vue 2 and vuetify, server side rendered with ruby on rails, webpack 5.
I configured capybara with selenium chrome headless driver, it works when it comes to interacting with text fields and buttons but when I try to check the checkbox:
(byebug) check('Accept')
*** Capybara::ElementNotFound Exception: Unable to find visible checkbox "Accept" that is not disabled
Vuetify hides the input and replaces it with beautiful div but, what is the best approach to check a v-checkbox?
Signup form
If I add the visible attribute, the input is found but nothing happens. I think I need to interact with some other element?
(byebug) check('Accept', visible: false)
#<Capybara::Node::Element tag="input" path="/HTML/BODY[1]/DIV[1]/DIV[1]/DIV[1]/MAIN[1]/DIV[1]/DIV[2]/DIV[1]/DIV[1]/DIV[1]/FORM[1]/DIV[2]/DIV[2]/DIV[1]/DIV[1]/DIV[1]/INPUT[1]">
I also tried this but still nothing happen:
(byebug) page.find('input[type=checkbox]', visible: false).set(true)
#<Capybara::Node::Element tag="input" path="/HTML/BODY[1]/DIV[1]/DIV[1]/DIV[1]/MAIN[1]/DIV[1]/DIV[2]/DIV[1]/DIV[1]/DIV[1]/FORM[1]/DIV[2]/DIV[2]/DIV[1]/DIV[1]/DIV[1]/INPUT[1]">
So I also tried the click way but getting this error:
(byebug) page.find('input[type=checkbox]', visible: false).click
*** Selenium::WebDriver::Error::ElementClickInterceptedError Exception: element click intercepted: Element <input aria-checked="false" id="input-96" role="checkbox" type="checkbox" value=""> is not clickable at point (234, 531). Other element would receive the click: <div class="v-input--selection-controls__ripple"></div>
(Session info: headless chrome=85.0.4183.121)
I tried also executing the raw script:
page.execute_script("window.uiApp.$data.terms_and_conditions = true")
The vue app is mounted in this way:
window.uiApp = new Vue({
i18n,
vuetify,
store,
router,
el: id,
render: h => h(App, {
props
})
})
But window.uiApp.$data is empty, so this attempt also seems to fail :( How to access vue component data (without vue web tool)?
I don't know what else to try, thanks in advance
Looking at the HTML shown in your linked image (in the future when asking questions it would be helpful if you included the relevant HTML directly in your question) it looks like you have a label associated with the hidden checkbox that the user can click. In that case you can use
check('Accept', allow_label_click: true)
which, when the actual checkbox is hidden, will click on the associated label instead. If you want that behavior to be on by default you can set Capybara.automatic_label_click = true.
Your other option is to determine exactly which element is actually being shown as the 'checkbox' and use find(...).click to locate that element and click on it.
I changed the checkbox in this way:
<v-checkbox v-model="terms_and_conditions"
#input='$v.terms_and_conditions.$touch()'
#blur='$v.terms_and_conditions.$touch()'
:label="$t('commons.accept')">
</v-checkbox>
<div class="ml-2">
<v-tooltip bottom>
<template v-slot:activator="{ on }">
<a
target="_blank"
href="/users/terms_and_conditions"
#click.stop
v-on="on"
>
{{ $t('session.sign_up.terms') }}
</a>
</template>
{{ $t('session.sign_up.terms_hint') }}
</v-tooltip>
</div>
Thank you

Making first mobile Safari tap a 'clickable action'

I have seen variations on the theme, but no clear answer. Basically I want an AngularJS Directive that registers a click and inserts extra content into a page, and then scrolls down a bit to make the new content visible. Here is the HTML
<li class="btn btn-default" ng-show="resto.link !== 'none'">
<p scroll-down onclick="void(0)">
Full review
<span class="glyphicon glyphicon-chevron-right right"></span>
</p>
</li>
</ul>
<div class="row">
<div class="col-xs-12" ng-bind-html="fullReview">
</div>
</div>
The onlick part is an Apple suggestion, that seems not to work.
And then I have:
.directive 'scrollDown', () ->
restrict: 'A'
link: (scope, $elm, attrs) ->
$elm.on 'click', (e) ->
e.preventDefault()
scope.getFullReview () ->
console.log "Scrolling'
$("body").animate
scrollTop: $elm.offset().top - 100
, "slow"
getFullReview() updates the model after an AJAX call, and then runs the callback.
This works fine in Chrome but not on the iOS simulator - basically a first tap makes the page move (but without triggering the console log - I think this is the URL bar regrowing) and a second is needed to trigger the Directive's link function. I have also installed fastclick as that was mentioned in some posts, but it did not help.
Need ideas :-) (Even some code that would tell me what event is being triggered by safari)
OK, Wow, I do not understand why, but the html above was the last markup on the page, so all of this was happening at the bottom of the screen. When I added some extra margin to the <ul> element, everything started working perfectly!! Bug in Safari?

Enabling button in jquery mobile pop-up

I have a Jquery pop-up that contains a form, and the submit button disabled. The button is supposed to get enabled once all fields have been filled. I ran a javascript script for this. However, it didn't work, and the page got refreshed. I added another button just to test the enabling.
<'button id="submitButton" disabled='true' data-theme="b" data-icon="check">Done<'/button'>
<'button id="x" onclick="enableButton()"'>Enable<'/button'>
The script:
function enableButton()
{
document.getElementById("submitButton").disabled=false;
}
This didn't work. I tried scripting it according to the jquery plugin guidelines like so:
$("#x").onclick(function()
{
$("#submitButton").button('enable');
});
This didn't work either. Any idea why? Again, this form is in a jquery pop-up.
Try:
$("#submitButton").removeAttr('disabled');
In your click event
You can try this;
$("#submitButton").removeClass('ui-disabled');

I got jquery-ui sortable working with meteor templates, but is it a bad hack?

I'm trying to use jquery-ui sortable with nested templates in Meteor, as follows. Here are the two templates in question:
<template name="activityEditor">
{{! the main activity editor view }}
<div class="activity-editor">
<input type="text" name="title" class="input-xxlarge" value="{{info.title}}" placeholder="Type a title here...">
<div class="activity-steps">
{{#each info.steps}}
{{>activityStepEditor}}
{{/each}}
</div>
</div>
</template>
<template name="activityStepEditor">
{{! the container view for each step editor }}
<div class="activity-step" data-id="{{_id}}">
<div class="order">{{order}}</div>
{{!....stuff...}}
</div>
</template>
and the template code (using coffeescript):
_.extend Template.activityEditor, {
# ...stuff...
rendered: ->
$(".activity-steps").sortable {
items: '.activity-step'
handle: '.order'
update: ->
stepIds = ($(el).attr('data-id') for el in $('.activity-step'))
$('.activity-steps').empty() #this must be done in order to steps to re-render properly
Lab.Activity.reorderSteps stepIds
}
$(".activity-steps").disableSelection()
}
The only way I can get this code to work and properly rerender the order is by emptying the container of my sortable elements right after they update with $('.activity-steps').empty(). I've tried cancelling the update event and forcing a rerender by changing another variable watched in the context, but any change causes Exception from Meteor.flush(): undefined after which I can't rerender anything until page reload.
This seems to work, and everything rerenders great. So my question is: is there any reason why I shouldn't do this? Is there a better, standard practice way to handle the sortable that I'm not seeing?
In the near future there'll be a better way to do it, as Meteor team is developing its new rendering engine: http://youtube.com/watch?v=ISNEhPG0wnA
(in this video, Avital Oliver shows exactly a way to do it without redrawing the screen: the object in the list is actually moved on all clients)
See this Meteor's Github Wiki entry for more technical info:
http://github.com/meteor/meteor/wiki/New-Template-Engine-Preview
While that's not officially published, if you need it right now, you could try Nazar Leush's approach:
http://github.com/nleush/meteor-todos-sortable-animation
He also published a working example here: http://todos-dnd-animated.meteor.com

changePage "jumps" back to old page

I've a big problem with a jQuery Mobile Application:
I'm using custom functions (they are triggered by onClick) to switch the page with currentPage.
It only happens on Android-Devices on sites in which has changed (due to ajax requests) with the integrated browser. iOS and Chrome works nice.
After clicking on an element, the animation started but just before it ends, it switches back to the old page. After a half second, it switches back to the new.
I made a movie of the bug here: http://www.youtube.com/watch?v=sXxvVUxniNg
Thank you very much
Code (CoffeeScript):
class Guide
#categoriesLoaded = false
#loadSearch: ->
$.mobile.changePage $("#guide"),
transition: 'slide'
changeHash: false
if !#categoriesLoaded
#categoriesLoaded = true
GuideApi.getCategories (data) ->
output = Mustache.render $("#tmpl-guide-categories-select").html(),
categories: data
$("#guide-search-category").append output
$("#guide-search-category").val($("#guide-search-category option:first").val());
window.WgSwitchGuide = ->
Guide.loadSearch
I was having the same issue. And I tried everything, I finally end with the solution. What I found was the error was principally within the browser. So I set the configuration of the pushStateEnabled as false. I did it by doing the following, adding this script.
<script type="text/javascript">
$(document).bind("mobileinit", function(){
$.mobile.pushStateEnabled = false;
});
</script>
It should be add before the jquery-mobile script is call, for more information you could see it on JQuery description
And it solved the problem no more jumping back.
I was having the exact same issue on both android and ios. For me, it was happening for heavy pages, i.e., pages with complex elements etc. Looks like you are using "slide" transition, which was what I was using as well. Taking out the page transitions (i.e., $.mobile.changePage("page.html", { transition: "none" })) for those pages resolved this issue for me. Hope this helps.
If you want to retain the transition, you can try preloading the page first when the previous page is being shown, by using the $.mobile.loadPage, and then show the transition. I am myself exploring this route, but it is probably worth trying.
Edit: OK - I explored the last suggestion and this doesn't seem to be working. Will stick with the first option.
Would you try to add the event stopPropagation and preventDefault methods on the first page's click event? This way the default action of the click event will not be triggered. Moreover the stopPropagation prevents the event from bubbling up the DOM tree, preventing any parent handlers from being notified of the event.
event.stopPropagation();
event.preventDefault();
Example:
$("p").click(function(event){
event.stopPropagation();
event.preventDefault();
// change page
});
After trying for weeks to find a solution to this, I ended up doctoring the JQM library to disable page transitions one right after another. It's not a good solution, but it's the only thing I could get to work.
I was getting pages jumping back on both $.mobile.changePage and on anchor links. I used the slide transition, but removing it did not fix the problem. Setting pushStateEnabled to false did not work either. The jumps were happening on all devices and browsers (that I tested, anyway).
So here's what I did to the JQM library (v1.3.2).
Before the $.mobile.changePage function is defined, I added:
var justChangedPage = false;
Then within the function there's a line that goes:
if ( pbcEvent.isDefaultPrevented()) {
return;
}
which I changed to:
if ( pbcEvent.isDefaultPrevented() || justChangedPage) {
return;
}
Then right after this part of the $.mobile.changePage function:
if ( toPage[ 0 ] === $.mobile.firstPage[ 0 ] && !settings.dataUrl ) {
settings.dataUrl = documentUrl.hrefNoHash;
}
I added:
justChangedPage = true;
setTimeout(function() {
justChangedPage = false;
}, 500);
(Putting that earlier in the function didn't work -- all that stuff executes more than once within a single page transition. And half a second seemed to be the minimum timeout that prevented the page jumps.)
I hope this helps someone even if it is a hack...
What is your JQM and Android version?
I'm not sure If I understand correctly. I think transition flicker maybe come from the following assumption.
Heavy page DOM transition.
Using "translate3d" somewhere in css file.
Not using "H/W Acceleration" feature. Enable by add this line to your AndroidManifest.xml in <application>
android:hardwareAccelerated="true"
I encountered exactly the same behaviour and it seems that few people are having the same issue. At first I thought it is caused by jQuery mobile library. Later on, I manage to find where the problem came from and it is a bug in my own code.
I made a demo to explain the issue.
http://jsfiddle.net/pengyanb/6zvpgd4p/10/
Hopefully, this can be hint for people having the same problem.
$(document).on('pagebeforeshow', '#page2', function(){
console.log('Page2 before show');
var htmlGeneratedOnTheFly = '<ul data-role="listview" data-inset="true">';
for(var i=0; i<4; i++)
{
htmlGeneratedOnTheFly += '<li><a>Random html element</a></li><li data-role="list-divider"></li>';
}
htmlGeneratedOnTheFly += '</div>';
$('#page2UiContent').empty();
$('#page2UiContent').append(htmlGeneratedOnTheFly);
$('#page2UiContent').trigger('create');
//////////////////////////////////////////////////
//The following section is where the bug is generated.
//Each on "page2 before show event" will add a OK Button click handler.
//The handlers never get cleared.
//More and more handler is added to the Page2 OK button as pages going back and forth.
//Open the browser's console window to see multiple "Page 2 OK Button clicked!!!" lines on one button click.
//To fix the bug, move the following section out of the $(document).on('pagebeforeshow', '#page2', function(){});
//////////////////////////////////////////////////
$('#page2OkButton').click(function(){
console.log("Page 2 OK Button clicked!!!");
$.mobile.changePage('#page1', {transition:"flip"});
});
//////////////////////////////////////////////
//////////////////////////////////////////////
});
<link href="http://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.css" rel="stylesheet"/>
<script src="http://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div data-role="page" id="page1" data-theme="a">
<div data-role="header" data-position="fixed">
<h5>Demo Page 1</h5>
</div>
<div data-role="main" class="ui-content">
<h2>jQuery mobile changepage jumps back to old page demo</h2>
<p>Click "Go To Page 2" button to go to page2</p>
<p>On Page2 click Ok Button to come back to page1</p>
<p>Keeping going back forth between two pages for few times.</p>
<p>Eventually, you will find that clicked on "Go To Page2" button to flip to Page2 but it soon jumps back to page1 automatically. </p>
<h2>Please read the comments in the javascript for explaination</h2>
Go To Page 2
</div>
</div>
<div data-role="page" id="page2" data-theme="a">
<div data-role="header" data-position="fixed">
<h5>Demo Page 2</h5>
</div>
<div id="page2UiContent" data-role="main" class="ui-content">
</div>
<div data-role="footer" data-position="fixed" style="text-align:center;">
<div data-role="navbar">
<ul>
<li><a id="page2OkButton" class="ui-btn ui-icon-check ui-btn-icon-left">OK</a></li>
</ul>
</div>
</div>
</div>

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