Backbone and jQuery Mobile: Issues with programmatically new content and styles - jquery-mobile

I'm preparing a very basic Backbone application using jQuery Mobile for the UI and Backbone (with RequireJS) for the rest.
I used the following project as a base:
https://github.com/fiznool/mobile-backbone-boilerplate
And used Christophe Coenraets guide for using jQuery Mobile along with Backbone:
http://coenraets.org/blog/2012/03/using-backbone-js-with-jquery-mobile/
And found a couple of good information, for example in here:
jquery mobile require.js and backbone
However, I'm having a lot of issues with new generated content and styles: more with pages that have more than one uri segment (for example: /movie/1).
My method that changes the view looks like the following:
var changeView = function(newView) {
newView.render();
newView.$el.addClass("ui-page").attr('data-role', 'page');
$(container).append(newView.$el);
$.mobile.changePage(newView.$el, {changeHash:false});
};
The page is actually changed, but it looks without any style. I found a solution by using the following code on the jquery.mobiile.config.js file:
$(document).bind('pagechange', function(e) {
$('.ui-page-active .ui-listview').listview('refresh');
$('.ui-page-active').page("destroy").page();
});
However, the styles are applied really late (after the page is rendered, like 500ms after).
Is there a better solution for this?

Well, I opted by removing jQuery Mobile and just style my components on my own.
I love jQuery Mobile and I used it in a couple of applications before, but the decision was more likely because the application felt too heavy when using jQuery Mobile and I just needed like 10% of jQuery Mobile.

Related

Why use data-role="navbar" in jQuery mobile

I'm using jQuery mobile to build a simple web app and I want to add a navigation bar common to all pages.
I've found this great example, which led me to this question: do I really need the attribute data-role="navbar"?
Because it adds unnecessary html and css to my code, obligating me to override all these unnecessary styles.
Thank you
I haven't seen the need for data-role="navbar". This page here might help: jQuery Mobile Data Attributes.
It looks like it might only be needed for styling.

How to use multiple files with phonegap jquery mobile app

I am starting a jquery mobile/phonegap application. And would like to know if there is any way I can keep my code in seperate files so it is easier to manage. From all the reading I have done on jquery mobile it looks like all of your pages are in one file and are just seperated by divs like <div data-role="page" id="page-one"></div>. I guess I could try to make some type of a makefile that concatenated them all together, but it seems that most apps are pretty lengthy that they should have a solution for this. Keeping all the code in one file just seems impossible to maintain.
JQuery demo, three pages, all one source file:
http://demos.jquerymobile.com/1.1.0/docs/pages/multipage-template.html
You can just use normal links with jQuery mobile:
http://demos.jquerymobile.com/1.4.0/navigation/
It will "hijack" the link and use transitions to give you a native like animation. As Flatlineato pointed out you need to make each page confirm to the required markup, and you'll need to repeat your headers/footers etc on each included page.
Or you can use more complex solutions to dynamically change the content of your page, which can be stored in multiple files, like this other SO post:
including the header and footer in jquery mobile multiple page site
But I would also agree with Leo and say the jQuery mobile isn't the best choice for Phonegap, it's not that well optimized, and runs slower in the Phonegap webkit view than it does in native safari.
I've also switched to a custom navigation system and dropped jQM early on in my Phonegap development, but that was over a year ago, more recent versions may work better.
I think my personal API is what you are searching for:
https://github.com/charnekin/api
Demo example:
http://yopo.es/cordovapi/
jQuery Mobile allows you to have the pages in separate files. Obviously in each file must conform to the structure of the markup pages.
To point to another page in the link instead of the id you specify the correct file name. If the file then you enter multiple jquery mobile pages must also specify the id.

Angular JS and jQuery Mobile routing - treatment of hash anchors in the URL

This is my first question on SO so i'll try and make it as clear and as understandable as possible.
I've recently started messing around with Angular JS and currently I am working on a mobile app using Angular JS and jQuery Mobile. So far I've not had any major problems and so far have no had a need to consider any external libraries for integration (such as the angular js + jquery mobile adapter). I've created a multi-page app (currently only two pages) and used separate controllers for each page (login + content page). The app itself is simple, it's just a list keeping app and i've created a quick jsfiddle based on the ui aspect of the content page: http://jsfiddle.net/G7JNV/4/
The app works as expected from the jsfiddle. However because the content page is a page in the same html document (index.html) as the login page, to navigate to the content page the url becomes:
.../index.html#mainpage
(mainpage being the page for the list keeper)
Thats when things start getting funny. When the url is like above, when adding an item to the list, the item is initially unstyled (it doesn't look like it's part of the list) but the css styling for that item comes back after adding another item. Of course the next item is then unstyled (and so on).
If you want to see what the issue looks like:
Everything however works fine if i don't have the hash page as part of the URL (I tested this by turning the two page app into just one page for the content so that .../index.html goes straight to the content page). The css is applied to the dynamic content fine as one would expect.
Of course I have no idea why it's doing this and I suspect that it's something to do with how angular and jqm treat the hash anchor in the URL (but bare in mind I don't have much experience in both Angular JS nor jQuery Mobile).
Any help from any of the more experienced Angular JS (and jQuery Mobile) users would be greatly appreciated!
You should be creating a directive that encapsulates the list and the logic that you have for it.
As suggested in the comments to your questions, a timeout can work. If you're having issues with the element "flashing" or "flickering", you can use the ngCloak directive to deal with this.
You may also want to check out the $locationProvider configuration in your app and turn off HTML5 mode or set the hash prefix.

How to completely disable Jquery mobile

We encounter the following problems with Jquery Mobile.
Our site is divided in a mobile and a fixed desktop site.
Both use the same database and php code. Only the templates are different.
On our mobile site we use Jquery mobile for a better user experience and that works fine. However we integrated a button "goto desktop".
This link should bring us back to our "normal" desktop site.
But there is the problem. In the desktop-site, Jquery mobile is still activated and it replaces drop down fields, input fields and make a complete mess of the desktop site.
We tried everything to disable JQM but nothing seems to work.
How we can switch from our mobile site template to the desktop site template and disable JQM completely when we are on the desktop template?
Thanks a lot for help!
There are few available solutions but only one will really do.
Working example: http://jsfiddle.net/Gajotres/NvEcW/
Few things are needed, first we need to set this:
<script>
$(document).on('mobileinit', function () {
$.mobile.ignoreContentEnabled = true;
});
</script>
it will give us an ability to programatically turn on/off content enhancement. If you already don't know this mobileinit event must be initialized before jQuery Mobile initialization but after the jQuery initialization. This must always be a part of a page.
There's one last step. When we want to move from mobile to desktop page we need to reload page and use this javascript:
$(document).on('pagebeforecreate', '#index', function(){
$(this).attr('data-enhance','false');
});
Pagebeforecreate event is important because at this point content is still not enhanced and attribute data-enhance = false will prevent any further page enhancement. If you want to turn it on again just set attribute value to true.
If you want more solutions then take a look at my other answer, search for the topic Methods of markup enhancement prevention : jQuery Mobile: Markup Enhancement of dynamically added content.

jQuery Mobile and Knockout.js Issues

Ive read alot about jQuery Mobile and Knockout.js not playing nice together. Should I ditch knockout.js for my mobile pages and stick with jquery mobiles javascript to handle my view updates? Is there a better option?
They work fine together. You will need to manually invoke jquery mobile's various widget methods if you are dynamically generating markup with ko's templating or if you are manipulating CSS or other properties. Custom bindings are another valid approach.
$('#myButon').button('refresh');
$('#myListview').listview('refresh');
$("#myCheckboxList").checkboxradio("refresh");
If your markup is static other than text values, it should be no-brainer.
I just started a new project for mobile website, JQM and KO are combined, they are great frameworks and I've never seen any big issue with them.

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