Try this sl-macro. "Setting" an index without a value deletes that index.
```
\define sl-macro(filter,tiddler)
<$button set=<<stateTid>> setTo="hide"> Select all
<$list filter=<<__tiddler__>> variable="Remove">
<$action-setfield $tiddler=<<__tiddler__>> $index=<<Remove>> />
</$list>
<$list filter=<<__filter__>> variable="Item">
<$action-setfield $tiddler=<<__tiddler__>> $index=<<Item>>
$value="selected"/>
</$list>
</$button>
\end
```
On Wednesday, March 13, 2019 at 7:07:15 AM UTC-7, Mohammad wrote:
>
> Attached is a sample tiddler of above question to simple test on
> tiddlywiki.com!
>
> For example try
> "[tag[About]]" and then enter "[tag[Android]]".
>
> I know pressing Add all has a button and you clear the previous list! But
> here my question is to remove previous selection on
> filter change in editbox!
>
> --Mohammad
>
>
> On Wednesday, March 13, 2019 at 5:30:40 PM UTC+3:30, Mohammad wrote:
>>
>> Consider the below macro.
>> It gets a filter and a JSON tiddler and adds all tiddlers from filter
>> output to the JSON tiddler.
>>
>>
>> \define sl-macro(filter,tiddler)
>> <$button set=<<stateTid>> setTo="hide"> Select all
>> <$list filter=<<__filter__>> variable="Item">
>> <$action-setfield $tiddler=<<__tiddler__>> $index=<<Item>>
>> $value="selected"/>
>> </$list>
>> </$button>
>> \end
>>
>>
>>
>> No consider the below example
>> It has a textbox to get a filter from user and then call sl-macro
>>
>> <$edit-text
>> tiddler="state/myExmp"
>> tag="input"
>> default=""
>> placeholder="filter search"
>> />
>> <$macrocall $name=sl-macro filter="[subfilter{state/myExmp}]"
>> tiddler="state/Myselection"/>
>>
>> This works fine! *My question* is when I change the filter in a text box
>> and try to add new set of selected tiddlers,
>> still the previous selection is there (in the JSON tiddler) I use the
>> selected tiddler somewhere else for further processing!
>> Is there any way to detect the new filter in the textbox and remove the
>> previous selection from JSON tiddler?!
>>
>>
>> --Mohammad
>>
>
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