description: A complex expression that provides a list of the allowed options that should be enabled or disabled based on the evaluation of a provided expression.  It allows toggling of allowed answers based on context, including the answers provided to other expressions.  Any options not listed by one of the answerOptionsToggleExpression occurrences are presumed to be 'enabled'.  This expression should evaluate to a boolean.  If it evaluates to an empty set, it will be interpretted as 'false'.  If it evaluates to something other than a boolean, it is considered an error in the design of the Questionnaire.  Form renderer behavior is undefined.  Systems SHOULD present a warning to the user if a non-boolean valued expression result does not trigger an all-out error.
package_name: hl7.fhir.uv.sdc
derivation: constraint
name: AnswerOptionsToggleExpressionExtension
type: Extension
elements:
  extension:
    array: true
    min: 2
    index: 0
    slicing:
      slices:
        option:
          match: {}
          schema:
            short: Option(s) to toggle
            array: true
            min: 1
            _required: true
            index: 1
            extensions: {}
            elements:
              valueReference: {type: Reference, short: The option value to control, choiceOf: value, index: 15}
              valueUri: {type: uri, short: The option value to control, choiceOf: value, index: 12}
              valueTime: {type: time, short: The option value to control, choiceOf: value, index: 11}
              valueDecimal: {type: decimal, short: The option value to control, choiceOf: value, index: 8}
              valueQuantity: {type: Quantity, short: The option value to control, choiceOf: value, index: 14}
              value:
                short: The option value to control
                choices: [valueDate, valueDateTime, valueDecimal, valueInteger, valueString, valueTime, valueUri, valueCoding, valueQuantity, valueReference]
                index: 5
              valueString: {type: string, short: The option value to control, choiceOf: value, index: 10}
              valueDateTime: {type: dateTime, short: The option value to control, choiceOf: value, index: 7}
              valueDate: {type: date, short: The option value to control, choiceOf: value, index: 6}
              valueCoding: {type: Coding, short: The option value to control, choiceOf: value, index: 13}
              extension: {index: 2}
              url:
                pattern: {type: Uri, value: option}
                index: 3
              valueInteger: {type: integer, short: The option value to control, choiceOf: value, index: 9}
            required: [valueCoding, valueUri, valueString, valueReference, valueDecimal, valueDateTime, value, valueDate, valueTime, valueQuantity, valueInteger]
        expression:
          match: {}
          schema:
            short: The expression to toggle on
            _required: true
            index: 16
            extensions: {}
            elements:
              extension: {index: 17}
              url:
                pattern: {type: Uri, value: expression}
                index: 18
              value:
                short: Expression value
                choices: [valueExpression]
                index: 20
              valueExpression: {type: Expression, short: Expression value, choiceOf: value, index: 21}
            required: [valueExpression, value]
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-answerOptionsToggleExpression'}
    index: 22
  value:
    choices: []
    index: 24
package_version: 4.0.0
extensions:
  option:
    min: 1
    short: Option(s) to toggle
    index: 1
    array: true
    elements:
      valueReference: {type: Reference, short: The option value to control, choiceOf: value, index: 15}
      valueUri: {type: uri, short: The option value to control, choiceOf: value, index: 12}
      valueTime: {type: time, short: The option value to control, choiceOf: value, index: 11}
      valueDecimal: {type: decimal, short: The option value to control, choiceOf: value, index: 8}
      valueQuantity: {type: Quantity, short: The option value to control, choiceOf: value, index: 14}
      value:
        short: The option value to control
        choices: [valueDate, valueDateTime, valueDecimal, valueInteger, valueString, valueTime, valueUri, valueCoding, valueQuantity, valueReference]
        index: 5
      valueString: {type: string, short: The option value to control, choiceOf: value, index: 10}
      valueDateTime: {type: dateTime, short: The option value to control, choiceOf: value, index: 7}
      valueDate: {type: date, short: The option value to control, choiceOf: value, index: 6}
      valueCoding: {type: Coding, short: The option value to control, choiceOf: value, index: 13}
      extension: {index: 2}
      url:
        pattern: {type: Uri, value: option}
        index: 3
      valueInteger: {type: integer, short: The option value to control, choiceOf: value, index: 9}
    _required: true
    extensions: {}
    url: null
    required: [valueCoding, valueUri, valueString, valueReference, valueDecimal, valueDateTime, value, valueDate, valueTime, valueQuantity, valueInteger]
  expression:
    url: null
    short: The expression to toggle on
    _required: true
    index: 16
    extensions: {}
    elements:
      extension: {index: 17}
      url:
        pattern: {type: Uri, value: expression}
        index: 18
      value:
        short: Expression value
        choices: [valueExpression]
        index: 20
      valueExpression: {type: Expression, short: Expression value, choiceOf: value, index: 21}
    required: [valueExpression, value]
class: extension
kind: complex-type
url: http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-answerOptionsToggleExpression
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 4.0.0