Prevent an element within header from expanding - jquery-ui

I'm using jQueryUI Accordion, and genereate the elements on the fly. I need to prevent accordion expanding if we click Remove action link inside the header.
To stop further handlers from executing after one bound using .live(), the handler must return false. Calling .stopPropagation() will not accomplish this.
No luck with return false. Please see the demo.

I don't think you will have too much luck achieving what you want with live(), as jQuery only supports event bubbling and not event capturing. The design decision was probably due to the fact the IE does not support event capturing, even though W3C's speicification has the flexibility for both.
Your best bet is to attach a click event to the remove button right after it is inserted into the DOM (to stop the event propagation) before you re-initiate the accordion. You may need to take care not to bind click event to the existing remove buttons multiple times.
The pseudocode would look something like this:
call .accordion('destory') on the current accordion
create the new element, i.e. <h2>...<a class="revmoe">...</a></h2><div>...</div>
insert the new element to the existing accordion
bind a click event to the remove button in the new element to stop event propagation
initiate the accordion, i.e. .accordion({..})
SO posts on event capturing in jQuery:
event capturing with jQuery
Event Capturing vs Event Bubbling

Just use the given functions by the plugin:
$('#accordion').accordion({active:8, disabled:true});
jQuery('.remove').click(function(){
$('#accordion').accordion('disable');
})
I chose the option "active:8" because this way no header is opened from the beginning (index -1 does not work for IE). Check the function and options out at: http://docs.jquery.com/UI/Accordion
Hope this is what you were looking for :-)

Related

jQueryUI datepicker redisplays after selection

The datepicker is managed by knockout-jqueryui in a Durandal view presented as a modal dialog. The calendar pops up when the corresponding INPUT is focussed, and hides when it is blurred. Data-binding works fine.
But when the user selects a value, the calendar closes, the INPUT updates and the calendar re-displays. It works, but it's annoying my users because they are mouse obsessed and the calendar obscures the control below, making it hard to click on it. Yes, I know they could press tab. I have pointed this out.
How can I stop the re-display? Ideally, triggers for display would be focus and keydown. I have no problem with configuring it to manual control and switching with data-bind="change: showCalendar, ..." or similar, if that's how one does this.
So, what's the usual way to go about this? If it's manual control as I describe above, what are some keywords to expedite finding the relevant section(s) in the documentation? (How to set it to manual and how to hide/show it manually.)
(I found show() and hide())
The showOn option for jQuery UI Datepicker is passed through by knockout-jqueryui.
It defines only two values, 'focus' and 'button'.
There is no explicitly defined mechanism to disable auto-display, but I found that a value other than the defined values has the desired effect. I am passing 'click'.
Manual control methods are show and hide.

iOS 7 hover/click issue - no click triggered in some cases

I have a kind of "widget" - a data table with some rich functionality like sorting, row selection and else.
In some cases (widget placement/nesting in DOM) clicks on it's rows are not triggered in iOS 7 Safari.
Widget is using jQuery 1.6.4
I can't publish a whole widget code (and you really wan't this to happen ;)), but I can narrow down a reproduction scenario to the following case:
Simple html table with some rows, two cols in each
First column contains a "checkbox" - simple div which is normally hidden and becomes visible, then parent row getting hovered. Visibility is triggered with CSS only
Every row has a click event handler. No mater what it does. In my example it will trigger an alert()
Table's parent is a block element with a fixed height and overflow-y set to auto
Table is bigger than it's parent, so, some table content is hidden and can be seen with scrolling
Here is a jsFiddle: http://jsfiddle.net/822eG/4/
On any desktop browser items are successfully hovered, click is triggered. On iOS7 hover is working but click is NOT triggered.
NOTE: On iOS you must tap twice to trigger click. First click will trigger hover and you'll see a "checkbox", then second tap must trigger a click, but it doesn't...
Any of those conditions is REQUIRED to reproduce an issue. Remove a single one and it starts working...
If you remove a "checkbox" appearance - click will work (http://jsfiddle.net/822eG/5/).
If you remove a height fix - it will work (http://jsfiddle.net/822eG/6/).
If you remove a overflow scrolling - it will work (http://jsfiddle.net/822eG/8/).
Any workaround is needed but functionality should be kept untouched. So, I can't remove "checkbox", size fix, hovering, clicking or overflow scrolling. Also, changing HTML markup is hardly to happen.
NOTE I've got a solution - see my answer below. But I still need a better workaround to keep using CSS as mush as possible.
ADD: Filed a bug to Apple #16072132
Try this:
.wrapper {
-webkit-overflow-scrolling: touch;
}
To get iOS to ignore hover states, try this:
.wrapper
{cursor: pointer;}
You can use this on any element to get it to function as expected.
Suddenly, I've got a solution... Using JavaScript I can remove :hover selector but still keep functionality.
If I will trigger checkbox visibility not by CSS :hover but by class and set it via javascript, it will work.
http://jsfiddle.net/822eG/10/
My current working solution requires no any changes in a whole code base and works fine in our conditions
With MutationObserver, monitor node insertion into head
If new node is inserted, and this is a link, check document.styleSheets
For each sheet check it's rules
If rule selector (access by document.styleSheets[n].rules[i].selectorText) contains :hover check styles for this selector
If styles contains display different from none or visibility different from visible - this is a "show by hover" style
For each such style change it's selector - replace :hover by .hover and declare a body delegate for mouseenter and mouseleave events which will toggle .hover class on triggered element
Full source code here: https://gist.github.com/Olegas/9143277
..try using this:
$('.row').on('touchstart click', function(){
alert('clicked');
});

jQuery mobile button staying pressed

I have a jQuery mobile button hooked up to an ajax POST. If the POST fails, the jQuery mobile button stays pressed instead of ``popping up". Any ideas?
It can be done easily.
Here a jsFiddle example made for one of my previous answers: http://jsfiddle.net/3PhKZ/7/
If you take a look there's this line of code:
$.mobile.activePage.find('.ui-btn-active').removeClass('ui-btn-active ui-focus');
It will try to find pressed button on a current active page, if it succeed it will remove 2 classes responsible for a button pressed state. Unfortunately pure CSS solution is impossible here. You can test this example, just comment top line and see what will happen.
One last thing selector $.mobile.activePage can only be used during the pagebeforeshow, pageshow, pagebeforechange, pagechange, pagebeforehide and pagehide page event so takes this into account.
In case you cant use this selector just replace it with a page id, like this:
$('#pageID').find('.ui-btn-active').removeClass('ui-btn-active ui-focus');
So your final code would look like this:
$.ajax( "example.php" )
.success(function() { doStuff(); })
.error(function() {
$('#pageID').find('.ui-btn-active').removeClass('ui-btn-active ui-focus');
})
Add an error clause to your AJAX handling which pops the button back.
$.ajax( "example.php" )
.success(function() { doStuff(); })
.error(function() { /*code to unpress button here*/ })
For those folks out there using "input" and not "anchors" as buttons. When using for instance "submit" and "reset" buttons and pressing them they remain as active, which is sometimes undesired depending on the actions performed when the buttons is clicked.
I am not sure if it is the expected behaviour, I have read that is a jQuery mobile bug, but the behavior is still present at least in jQM 1.3.2
An yes the trick is to remove the active class as stated however those get tricky because the class is not added to the input tag, i*t is added to a parent DIV* that is created by all of the ugly stuff around the "input" to style the button, that is why removing the active class when selecting the input doesn´t work.
By analyzing the HTML produced by jquery mobile a workaround is to:
remove the active class on the input parent instead of the actual input element.
$('.mybutton_class_or_ID').parent().removeClass('ui-btn-active');
I prefer this approach instead of clearing all the active classes across the whole page in case you want to be more selective with the class removal.

ZK-Why Zk drop getFocus() or isFocus()?

I was trying to get if Window is focused or not so i gone through available method of Window class ,did not get any getFocus(); or isFocus(); method. Is there any reason to ZK drop this method ? There is only focus() method with void type.
I have a complex problem ,In my application single page have two parts left hand side contain a.zul and right part b.zul and have tabs. I have to fire CTRL key event something like this if focus on a.zul then fire event on A.Java class and When focus on b.zul then fire event in B.Java class. But as i am not able to get focus its hard to determine which window or zul is focused now? ANy one know any other solution of this problem?
Lots of elements (dom level elements) cannot receive focus, e.g., div, span, ul/li, table, tr, td, ..., etc
Also lots of widgets (ZK widgets) cannot receive (and do not handle) focus, e.g., window, div, label, grid, ..., etc
This is why there is no getFocus/isFocus methods by default since they are not that 'common' for a component, lots of components cannot receive focus, some of components work with 'default' focus (e.g., a, textbox) and some of components work with 'hand made' focus (e.g., listbox contains a dom element 'a' and play around it for focus).
You can try to listen to onFocus event or onClick event at server side to know which component is focused/clicked(selected), or override doFocus_(evt) method of widget and log the focused widget at client side for further processing.
But why do you need to fire onCtrlKey event manually? It will be fired from client to server automatically by default.

Swapping table td on drag

I am trying to swap two TD elements in table on Drag&Drop. I found this plugin Swappable and it works in some way. But when I drag some element the cursor change position to some specific value. I do not want changing cursor position. But when I rework this plugin it stops work.
Does anyone have experience with it or know about any other plugin?
Thanks,
Zbynek
Usually I use the jQuery sortable. It does pretty much want you want. You can use it in a table too.
Then I do my stuff (including ajax updates) in a function setted in the receive event
Did you try the JQuery Sortable() option?
See http://jqueryui.com/sortable/#display-grid

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