jquery mobile horizantal radio buttons in knock out template binding - jquery-mobile

I am trying to bind jquery mobile horizantal radio buttons using knock out teplate binding.
The fielsset in template looks like
<fieldset data-role="controlgroup" data-bind="attr: {id:QuestionID+'_fld'},template: {name:'optionTemplate', foreach: OptionList}">
</fieldset>
and the option template looks like
<script type="text/x-jquery-tmpl" id="optionTemplate">
<input type="radio" data-bind="attr: { id:OptionID+'_radio',value:OptionID, name: QuestionID+'_rd'}, checked:$parent.OptionId" />
<label data-bind="text:OptionText, attr: {id:OptionID+'_optn', for : QuestionID+'_rd' }"> </lable>
</script>
I have tried
$('input[type=radio]').checkboxradio().trigger('create');
$('fieldset').controlgroup().trigger('create');
Here my problem is that the mobile css is not applying to the fiedset.

You must do this after the template has built your page or during the page initialization event, something like this:
$(document).on('pagebeforeshow', '#pageID', function(){
});
Page content can be enhanced ONLY when content is safely loaded into the DOM.
Second this do NOT mix refresh functions with trigger create. Either one or the other. Trigger create is used to enhance whole content, and it should NOT be used on single elements. No point in restyling whole page every time you add new content.
Basically you only want to use:
$('input[type=radio]').checkboxradio().checkboxradio('refresh');
or if first line throws an error:
$('input[type=radio]').checkboxradio();
and:
$('fieldset').controlgroup();
But I would advise you to only use this line after everything has been appended:
$('#contentID').trigger('create');
where #contentID is an id of your div data-role="content" object. Or in case you are not using content div, only data-role="page" div then use this:
$('#pageID').trigger('pagecreate');
where #pageID is an id of your page.
To find out more about marku enhancement of dynamically added content take a look at this answer.

Related

Styling single jQuery UI controlgroup-item

I am using jQuery UI controlgroup to style checkboxes in an HTML form. After the input values are processed by a PHP script, the results are displayed on the the same page along with the form itself, so that the user can adjust the filters. What I am trying to do, is to have the boxes that were checked previously remain checked after the form has been processed, so that the user sees what selection criteria were used. To achieve that I store all the PHP $_POST data in a JS variable using json_encode, which I'd like to use to iterate through the labels and mark those that were checked previously. The problem is that the only option of the controlgroup widget that I can use is classes with ui-controlgroup-item which shows every single label within the group as active, and for the life of me I cannot figure out how to make it conditional, e.g. so that I can use if(label[for=' + var.value +'])', var being <?php echo json_encode($_POST) ?> or something similar. Will appreciate any suggestions.
Here is the HTML:
<div id="currencyList">
<label for="gbp">GBP</label>
<input type="checkbox" value="gbp" name="currency[]" id="gbp" >
<label for="usd">USD</label>
<input type="checkbox" value="usd" name="currency[]" id="usd">
<label for="eur">EUR</label>
<input type="checkbox" value="eur" name="currency[]" id="eur">
</div>
And this is the JavaScript bit:
$( "#currencyList" ).controlgroup({
classes: {
"ui-controlgroup-item": "ui-checkboxradio-checked ui-state-active"
}
});
After trying to find a solution for several days I decided to skip trying via the classes option and instead to move outside the controlgroup widget. So here is my not-so-pretty-but-working solution:
var postData = <?php echo json_encode($_POST) ?>;
$( "#currencyList" ).controlgroup();
$('#currencyList').children('label').each(function () {
if(postData.currency.indexOf($(this).attr("for")) >= 0){
$(this).addClass( "ui-checkboxradio-checked ui-state-active");
}
});

Why is my dynamically-added content not rendering with jQuery Mobile?

I'm using jQuery Mobile + Backbone + RequireJS. After successful login I do the following:
require(['app/view/main'], function(MainView) {
var mainView = new MainView();
$('body').html(mainView.render().el);
});
and render() looks like
render: function() {
this.$el.html(this.template);
return this;
}
Upon doing so, my page is blank. Inspecting the body, I do see the following HTML inside the body:
<div data-role="page" id="main">
<div data-role="header" data-position="inline">
<h1>Accounts</h1>
</div>
<div data-role="content">
hello
</div>
</div>
I've also tried doing this inside render():
this.$el.html(this.template).trigger('create');
as well as
this.$el.html(this.template).page();
but the page is still blank. Any ideas why?
If I simply put the HTML inside the body and load the page, it displays fine, like a normal jQuery Mobile app would.
Are you waiting until after pageinit to trigger / create your page?
$(document).bind('pageinit', function() {
// trigger
});
Also, jQM may be interpreting your markup as a single page template and then by injecting a data-role='page' element, you are marking up a multiple page document (with only a single page). Try leaving the <div data-role='page'> element in your default markup and then dynamically add the header, content and footer. jQM should then correctly interprete the markup and enhance it accordingly.

Is it possible to add dynamic jQuery tabs using KnockoutJS Templates?

I'm trying to build a dynamic display in a web page. The site is built in ASP.NET MVC 3, but I'm not sure if this matters...
Essentially, I have a base "_Editor.cshtml" page which uses partials to render the specific editor content in my display using query parameters. Consider an editor for a chart (line chart vs. bar chart).
_Editor.cshtml
<div id='tabs'>
<ul>
<li><a href='#queryTab'>Define Query</a></li>
<!-- THIS IS WHERE I NEED TO SHOW ALL OF MY 'CUSTOM' TAB NAMES -->
<!-- ko template: 'tabNames' -->
<!-- /ko -->
<li><a href='#themeTab'>Styles and Themes</a></li>
</ul>
<div id='queryTab'>
<!-- configure db connection, tables, fields, etc... (not important) -->
</div>
<!-- THIS IS WHERE I WANT TO SHOW CONTENT FOR MY CUSTOM TABS -->
<!-- ko template: 'tabContent' -->
<!-- /ko -->
<div id='themeTab'>
<!-- show various style options here (not important) -->
</div>
</div>
<script type="text/javascript">
$(function(){
var vm = { /* define my model here */ };
ko.applyBindings(vm);
$("#tabs").tabs();
});
</script>
#if (Model.EditorType == ChartTypes.Bar) {
#Html.Partial("_BarChartEditor")
} else if (Model.EditorType == ChartTypes.Line) {
#Html.Partial("_LineChartEditor")
}
_BarChartEditor.cshtml
<script id="tabNames" type="text/html">
<li>Bar Chart Tab!</li>
<!-- I could have many more tab names here -->
</script>
<script id="tabContent" type="text/html">
<div id="barChartTab">
<h1>Add controls for bar chart configuration</h1>
</div>
<!-- I would create a div for each tab name above here -->
</script>
_LineChartEditor.cshtml
<script id="tabNames" type="text/html">
<li>Line Chart Tab!</li>
</script>
<script id="tabContent" type="text/html">
<div id="lineChartTab">
<h1>Add controls for line chart configurations</h1>
</div>
</script>
Sorry for the lengthy code drop (it took a long time to write it all here, so have mercy on me). :) I wanted to make sure that my problem was understood because of the way I'm building my editors using custom partials. Perhaps it's cludgy, but it works for the most part...
Really, everything works great except for the tab content. The tab rendering appears to be happening before I'm able to bind my view model to the UI. When the 'ko.applyBindings()' method is called, the tab shows up on different tabs.
Has anybody tried to do this? Has anybody had success? I've created a jsfiddle to show a simple scenario to show exactly what I'm talking about:
http://jsfiddle.net/TrailHacker/j2nhm/
Thanks for any help!
I actually got it working with your example, your content template was just structured incorrectly. It was missing the <div> tags.
If you modify this for your example, just remember that the div id needs to match the link's ref. You can throw both of these values into your viewmodel, to allow for multiple custom tabs.
http://jsfiddle.net/tyrsius/UCGRZ/

prevent jquery mobile from styling element

I've got a checkbox that I want hidden on the page. My obvious first attempt was the following:
<input type='checkbox' style='display:none' />
However, I noticed jquery mobile automagically wraps the checkbox in a div that looks like this:
<div class='ui-checkbox'>
<input type='checkbox' style='display:none;' />
</div>
I would assume that there's some kind of data- element that would prevent this additional styling, but haven't found it in the docs or elsewhere. It's easy enough to override the .ui-checkbox in css to hide it as well, but would prefer a more jquery mobile-standard approach. Does such a thing exist?
The attribute that prevents styling is data-role="none"
<input type='checkbox' style='display:none' data-role="none" />
See the Jquery doc: "Preventing auto-initialization of form elements"
For future users.
Just in case you want to disable for every form element or your forms are loading dynamically where you cannot edit markup use this.
$(document).on('pagebeforecreate', function( e ) {
$( "input, textarea, select", e.target ).attr( "data-role", "none" );
});
I have too many places to change inputs and add data-role="none"
The following code works for me:
<script>
$(document).bind('mobileinit',function(){
$.mobile.page.prototype.options.keepNative = "select,input";
});
</script>
<script src="http://code.jquery.com/mobile/1.4.2/jquery.mobile-1.4.2.min.js"></script>

Form checkboxes not being displayed correctly second time shown

I have a weird problem with a simple form with checkboxes..
The first time it's shown it looks fine.. But then after navigating back to the previous page and be to it again - the ui is not updates resulting in plain checkboxes without jQuery mobile style..
I've Googled like crazy and found a couple of hints like .fieldcontain(); but it's doesn't work =(
The data is being retrieved through knockout bindings..
Any good ideas?
Here's the code...
<div id="searchCitiesPage" data-role="page" data-theme="a" class="page searchCities">
<header data-role="header" data-theme="b">
</header>
<div data-role="content" class="content" data-theme="a">
<script id="countyListTemplate" type="x-jquery-tmpl">
<form id="fieldform" action="form.php" method="post">
<fieldset id="fieldsetgroup" data-role="controlgroup">
{{each BoligPortal.AdSearch.postalcodesInSelectedCounty}}
<input type="checkbox" name="checkbox-${zipcode}-${timestamp}" id="checkbox-${zipcode}-${timestamp}" class="zipcodecheckbox"/>
<label for="checkbox-${zipcode}-${timestamp}">${zipcode} ${city}</label>
{{/each}}
</fieldset>
</form>
</script>
<div data-bind="template: 'countyListTemplate'"></div>
<div class="submit">
Næste
</div>
</div>
I was having a problem like this too, but in my case, the checkboxes were being redrawn dynamically before loading the page. I tried refreshing:
$("input[type='checkbox']").checkboxradio("refresh");
But it gave me an error stating that checkboxradio hadn't been initialized. However, when I tried this instead:
$("input[type='checkbox']").checkboxradio();
It made the checkboxes appear correctly every time. I'm still fumbling in the dark with JQuery Mobile and can't say exactly what happens where and why (I think I'm initializing the checkboxes?), but I thought I would share for the next time someone like me googles their way to this thread.
You can add some javascript to re-initialize the jQuery Mobile markup for your checkbox on each page load. Something like this:
<script type="text/javascript">
$(function() {
$('[data-role=page]').live('pageshow',function(){
$('#fieldform').find('input').checkboxradio();
});
});
</script>
I would suspect this code
{{each BoligPortal.AdSearch.postalcodesInSelectedCounty}}
<input type="checkbox" name="checkbox-${zipcode}-${timestamp}" id="checkbox-${zipcode}-${timestamp}" class="zipcodecheckbox"/>
<label for="checkbox-${zipcode}-${timestamp}">${zipcode} ${city}</label>
{{/each}}
is being called again when you transition back to the page. I would suggest pulling the infomation/tags/etc.. before the page displays (on the first load) and display it statically. So when transitioning back it shows the same data.
of you could use one of the live events and restyle it before the page shows, example:
$('.zipcodecheckbox').live('pagebeforeshow',function(event, ui){
$("input[type='checkbox']").checkboxradio("refresh");
// or
$(".zipcodecheckbox").checkboxradio("refresh");
});

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