Here I have created a template for adding field values to tiddler fields using edit text widget. Now I want to add two buttons to interact with these edit text widgets - one button to add numerical value 1 to the field value and another button to substract numerical value 1 from that field value. Is it possible?
Sure:
<$let field="myfield" step="1">
<$button actions="""<$action-listops $field=<<field>> $subfilter="+[add<step>]:else[<step>]"/>""">+<<step>></$button>
<$edit-text field=<<field>> type="number" default="0"/>
<$button actions="""<$action-listops $field=<<field>> $subfilter="+[subtract<step>]:else[<step>negate[]]"/>""">-<<step>></$button>
</$let>
or with a macro:
\define btn-count(count) <$button actions="""<$action-listops $field=<<field>> $subfilter="+[add<__count__>]:else[<__count__>multiply[1]]"/>"""><<__count__>></$button>
<$let field="myfield">
<<btn-count "-1">>
<$edit-text field=<<field>> type="number" default="0"/>
<<btn-count "+1">>
</$let>
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And for the ‘complete set’, lets be able to zero it.
- just to add to @telumire’s answer
<$button actions="""<$action-setfield $field="myfield" $value="0"/>""">0</$button>
Or delete it
<$button actions="""<$action-deletefield $field="myfield"/>""">{{$:/core/images/delete-button}}</$button>
Each button could be wrapped in a list with a conditional filter eg
<$list filter="[all[current]has[myfield]]" variable=~><$button actions="""<$action-deletefield $field="myfield"/>""">{{$:/core/images/delete-button}}</$button></$list>
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