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jquery - Tick/Untick Select all depending on option chosen

Hello Experts,

Please see the following link:
Example

What I am trying to do is automatically check/uncheck the relevant 'select all' checkboxes depending on whether the siblings have all been checked.

For example, if I check Sub1->1...3, then the Select all under Sub1 should be ticked as well.
If I then untick any of them, this should automatically untick the 'select all' box.
If I think tick every single checkbox, this should tick Main->select all (as everything has been ticked) and vice versa.

Hope that makes sense.

Please can anyone help me with this?

Many Thanks for any help!
0
jagku
Asked:
jagku
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2 Solutions
 
hieloCommented:
try the attached code:
<script type="text/javascript"> 
$(function() {
	$('li.selectAll>input:checkbox').bind('click',function(){
//NOTE" this.checked causes this to "toggle". In other words, if the SELECT ALL is checked
//all the children will be checked. If the SELECT ALL is unchecked, all the children will become
//unchecked. IF you want it to be only CHECKED all the time, then change this.checked to true
		$('>li>input:checkbox',$(this).closest('ul')).attr('checked',this.checked);
	});
});
</script>

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leakim971PluritechnicianCommented:
Test page : http://jsfiddle.net/8BJmk/
$(":checkbox", ".noBulletsWithIndent").change(function() {
    var $p = $(this).closest("ul");
    var _checked = $p.find(":checkbox:gt(0):checked").length;
    var ___total = $p.find(":checkbox:gt(0)").length;
    if( _checked == ___total ) {
        $p.find(".selectAll :checkbox").attr("checked", true);
    }
    else {
        $p.find(".selectAll :checkbox").attr("checked", false);
    }
})

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hieloCommented:
Here's the complete code ( for the selectAll and for the inidividual checkboxes):
<html> 
<head> 
<style> 
	ul.noBulletsWithIndent {
		list-style-type: none;
	}
</style> 
<script type="text/javascript" src="http://code.jquery.com/jquery-latest.min.js"></script> 
<script type="text/javascript"> 
$(function() {
	$('li.selectAll>input:checkbox').bind('click',function(){

		$('>li>input:checkbox',$(this).closest('ul')).attr('checked',this.checked);
	});

	$('input[type=checkbox]').bind('click',function(){
		var ul=$(this).closest('ul');
		$('>li.selectAll>:checkbox:eq(0)',ul).attr('checked', $('>li>:checkbox:gt(0):checked',ul).size()==$('>li>:checkbox:gt(0)',ul).size() );
	});
});
</script> 
</head> 
</body> 
<ul class='noBulletsWithIndent'> 
	<li style="margin: 5px 0;">[+]Main</li> 
	<li> 
		<ul class="noBulletsWithIndent" id="sub_10"> 
			<li class="selectAll"><input type="checkbox" name="_10" value="ALL">Select All</li> 
			<li><input type="checkbox" name="_44" value="44">1</li> 
			<li><input type="checkbox" name="_38" value="38">2</li> 
			<li style="margin: 5px 0;">[+]Sub1</li> 
			<li> 
				<ul class="noBulletsWithIndent" id="sub_101"> 
				<li class="selectAll"><input type="checkbox" name="_101" value="ALL">Select All</li> 
				<li><input type="checkbox" name="_61" value="61" checked>1</li> 
				<li><input type="checkbox" name="_52" value="52">2</li> 
				<li><input type="checkbox" name="_37" value="37">3</li> 
				</ul> 
			</li> 
			<li style="margin: 5px 0;">[+]Sub2</li> 
			<li> 
				<ul class="noBulletsWithIndent" id="sub_99"> 
					<li class="selectAll"><input type="checkbox" name="_99" value="ALL">Select All</li> 
					<li><input type="checkbox" name="_51" value="51">1</li> 
					<li><input type="checkbox" name="_49" value="49">2</li> 
					<li><input type="checkbox" name="_48" value="48">3</li> 
				</ul> 
			</li> 
			<li><input type="checkbox" name="_41" value="41">3</li> 
			<li><input type="checkbox" name="_8" value="8">4</li> 
			<li><input type="checkbox" name="_9" value="9">5</li> 
		</ul> 
	</li> 
</ul> 
</head> 
</html>

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hieloCommented:
>>Test page : http://jsfiddle.net/8BJmk/
If I am not mistaken, the "3,4,5" items at the bottom "belong" to the first "1,2" (Main) list. Thus clicking 1,2,3,4,5 should click the first Select all.
0
 
leakim971PluritechnicianCommented:
Corrected : http://jsfiddle.net/8BJmk/1/

$(":checkbox", ".noBulletsWithIndent").change(function() {
			var $p = $(this).closest("ul");
			var _checked = $p.find(">li>:checkbox:gt(0):checked").length;
			var ___total = $p.find(">li>:checkbox:gt(0)").length;
			if( _checked == ___total ) {
				$p.find(".selectAll:first :checkbox").attr("checked", true);
			}
			else {
				$p.find(".selectAll:first :checkbox").attr("checked", false);
			}
		})

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hieloCommented:
@leakim971:
>>Corrected
>>                  var _checked = $p.find(">li>:checkbox:gt(0):checked").length;
>>                  var ___total = $p.find(">li>:checkbox:gt(0)").length;
Those are the same rules/selectors I used! Wouldn't it have been easier to just say "Refer to Hielo's post"? :)

Quick Question for you - are those jsfiddle.net links temporary?
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leakim971PluritechnicianCommented:
>Those are the same rules/selectors I used! Wouldn't it have been easier to just say "Refer to Hielo's post"? :)
You rigth, sorry, I did not see that, sincerely

>Quick Question for you - are those jsfiddle.net links temporary?
I did some quick search but I did not find something about the retention, that's why I post the main code at EE each time



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hieloCommented:
>>I did some quick search but I did not find something about the retention
Thanks for your time. I just thought you might know right off the top of your head.

Regards,
Hielo
0
 
leakim971PluritechnicianCommented:
>Thanks for your time. I just thought you might know right off the top of your head.

No worry, I did the searches before your question.
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jagkuAuthor Commented:
Hi hielo and leakim971,

Many Thanks for this.
It almost works - but I think I wasn't very clear:

The top 'select all' should only be checked if every checkbox in the tree has been checked.

How can the code be adjusted to cater for this?

Many Thanks!
0
 
hieloCommented:

<html> 
<head> 
<style> 
	ul.noBulletsWithIndent {
		list-style-type: none;
	}
</style> 
<script type="text/javascript" src="http://code.jquery.com/jquery-latest.min.js"></script> 
<script type="text/javascript"> 
$(function() {
	$('li.selectAll>input:checkbox').bind('click',function(){
		var ul=$(this).closest('ul');
		if('ALL'==this.value &&'sub_10'==ul.attr('id'))
			$(':checkbox').attr('checked',this.checked);
		else
			$('>li>input:checkbox',$(this).closest('ul')).attr('checked',this.checked);
	});

	$('input[type=checkbox]').bind('click',function(){
		var ul=$(this).closest('ul');
		$('>li.selectAll>:checkbox:eq(0)',ul).attr('checked', $('>li>:checkbox:gt(0):checked',ul).size()==$('>li>:checkbox:gt(0)',ul).size() );
		$(':checkbox:eq(0)').attr('checked', $(':checkbox:gt(0):checked').size()==$(':checkbox:gt(0)').size() );
	});
});
</script> 
</head> 
</body> 
<ul class='noBulletsWithIndent'> 
	<li style="margin: 5px 0;">[+]Main</li> 
	<li> 
		<ul class="noBulletsWithIndent" id="sub_10"> 
			<li class="selectAll"><input type="checkbox" name="_10" value="ALL">Select All</li> 
			<li><input type="checkbox" name="_44" value="44">1</li> 
			<li><input type="checkbox" name="_38" value="38">2</li> 
			<li style="margin: 5px 0;">[+]Sub1</li> 
			<li> 
				<ul class="noBulletsWithIndent" id="sub_101"> 
				<li class="selectAll"><input type="checkbox" name="_101" value="ALL">Select All</li> 
				<li><input type="checkbox" name="_61" value="61" checked>1</li> 
				<li><input type="checkbox" name="_52" value="52">2</li> 
				<li><input type="checkbox" name="_37" value="37">3</li> 
				</ul> 
			</li> 
			<li style="margin: 5px 0;">[+]Sub2</li> 
			<li> 
				<ul class="noBulletsWithIndent" id="sub_99"> 
					<li class="selectAll"><input type="checkbox" name="_99" value="ALL">Select All</li> 
					<li><input type="checkbox" name="_51" value="51">1</li> 
					<li><input type="checkbox" name="_49" value="49">2</li> 
					<li><input type="checkbox" name="_48" value="48">3</li> 
				</ul> 
			</li> 
			<li><input type="checkbox" name="_41" value="41">3</li> 
			<li><input type="checkbox" name="_8" value="8">4</li> 
			<li><input type="checkbox" name="_9" value="9">5</li> 
		</ul> 
	</li> 
</ul> 
</head> 
</html>

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jagkuAuthor Commented:
I gave hielo a few more points because he gave me the final correct solution.
Thanks a lot (as usual!).
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