RPStep class

The base class for steps which can compose a task.

Each RPStep object represents one logical piece of data entry or activity in a larger task. Whether your app is giving instructions, presenting a form or survey, obtaining consent, or running an active task, everything in the Research Package framework is a collection of steps (RPStep objects), which together form a task (an RPTask object)

Implementers

Constructors

RPStep(String _identifier, { bool optional })
Default constructor. Returns a step with the given identifier
RPStep.withTitle(String _identifier, { String _title, { bool optional })
Returns a step object with the given title. Different types of Steps are using the title text differently.

Properties

identifier String
A unique identifier of the Step. This identifier connects the Step to its result (RPResult) object.
read-only
optional bool
If set to true the step can be skipped. In that case the result for the step will be null.
read / write
stepWidget → Widget
The widget (UI representation) of the step. RPQuestionSteps don't have it because their UI representation depends on the Answer Format. Their Answer Format is assessed by RPUIQuestionStep or RPUIFormStep and they return the corresponding UI. [...]
read-only
text String
The text of the Step. Different types of Steps are using the text text differently. [...]
read / write
title String
The title text. Different types of Steps are using the title text differently. [...]
read / write
hashCode int
The hash code for this object. [...]
read-only, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
inherited
toString() String
Returns a string representation of this object.
inherited

Operators

operator ==(dynamic other) bool
The equality operator. [...]
inherited