Hi All,
i want to know , how to configure the below logic
BY default all the option should be selected. and also in dropdown i can have the option to deselect all /select all along with all the options.
Please help me how i can go about this
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With some saveInto manipulation, we can accomplish the original use case request of having an item in the dropdown that overrides the user's existing choices in a context-sensitive manner (here, it selects all entries EXCEPT when all entries are all selected, in which case the behavior changes to deselecting all).
With this, I'd caveat that a better user experience would be to use either a checkbox or a dynamic, rich-text-field-based link to add this behavior near the dropdown, because even when the dropdown works fine it's a little unintuitive in terms of User Experience. But it's an interesting exercise so I'm posting my results here for everyone's review.
Some additional notes: instead of hardcoding the language names and codes over and over gain, I start out by creating a map array of each language and its corresponding code/label. This allows us to quickly set the default value to all extant options, plus to set another variable that stores what the "all selected" value looks like.
a!localVariables( local!languageChoices: { a!map(code: "en_US", name: "English"), a!map(code: "es_ES", name: "Spanish"), a!map(code: "fr_FR", name: "French"), a!map(code: "de_DE", name: "German") }, local!allChoiceCodes: local!languageChoices.code, local!selectedLanguages: local!allChoiceCodes, local!areAllCurrentlySelected: a!isNullOrEmpty(symmetricdifference(local!allChoiceCodes, local!selectedLanguages)), a!multipleDropdownField( label: "Language", instructions: "Which language(s) are you proficient in?", choiceLabels: { local!languageChoices.name, if( local!areAllCurrentlySelected, "[Click to Deselect All]", "[Click to Select All]" ) }, choiceValues: { local!languageChoices.code, "all" }, value: local!selectedLanguages, saveInto: { a!save( local!selectedLanguages, if( contains(save!value, "all"), if( local!areAllCurrentlySelected, tostring({}), local!allChoiceCodes ), save!value ) ) }, placeholder: "Select a language", searchDisplay: "ON" ) )