fhir_renderer_questionnaire 1.1.0

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Added

Builder Support for Reference Items

• QuestionnaireReferenceWidgetBuilder - New builder callback type for customizing reference item rendering
• Custom Reference Builder example demonstrating autocomplete-style FHIR resource selection
• Mock data for Practitioners and Organizations with searchable dropdown

Builder Support for Attachment Items

• QuestionnaireAttachmentWidgetBuilder - New builder callback type for customizing attachment item rendering

Fixed

Reference Item Cursor Jumping

• Fixed cursor jumping to beginning when typing in QuestionnaireReferenceItem fields

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This is the first stable release of fhir_renderer_questionnaire, featuring comprehensive FHIR R4 questionnaire rendering capabilities with 94% coverage of questionnaire item types (16 of 17).

Added

New Item Types

• Support for attachment item type - File upload functionality with support for images, PDFs, and documents
• Support for reference item type - Reference to FHIR resources (Practitioner, Patient, etc.)

Validation & Input Handling

• Regex validation support using standard FHIR extension http://hl7.org/fhir/StructureDefinition/regex
• Automatic default validation for field types: integer, decimal, url, and quantity (no extensions required)
• Automatic keyboard type selection based on field type (integer → number pad, decimal → decimal pad, url → URL keyboard, text → multiline)
• Input formatters to restrict invalid characters during typing (e.g., letters in integer fields, multiple decimal points in decimal fields)
• Smart text input actions (newline for multiline text, next for single-line fields)
• Support for entryFormat extension to provide custom validation error messages
• Automatic validation feedback with TextFormField for real-time input validation
• New KeyboardTypeHelper utility class providing keyboard configuration for different field types
• New DefaultValidationPatterns class providing built-in patterns for common field types
• New RegexValidationMixin for reusable validation logic with support for default patterns
• Extension methods regexValidationPattern and regexValidationErrorMessage on QuestionnaireItem
• regexValidationPattern and regexValidationError fields in ItemBehavioralData
• Example questionnaires demonstrating both custom regex patterns and automatic default validation

Item Control Extensions

• Support for FHIR questionnaire-itemControl extension for customizing choice rendering
• Dropdown rendering for choice items using drop-down item control
• Radio button rendering for choice items using radio-button item control
• Checkbox rendering for choice items using check-box item control

Features & Functionality

• forceReadOnlyView in the RendererQuestionnaireController to force the renderer to be in read-only mode for the entire view
• onPageChanged callback in QuestionnairePageViewRenderer to track page navigation
• Initial values support for default slivers in QuestionnaireSliversViewRenderer
• Unit tests for core utilities: FhirRendererQuestionnaireUtils and FhirRendererQuestionnaireResponseUtils
• Comprehensive test coverage for enableWhen evaluation logic (AND/OR behavior, operators, data types)
• Tests for QuestionnaireResponse generation, manipulation, and answer handling

Architecture & Performance

• Performance optimizations using caching system for enableWhen evaluations
• Mixin-based architecture for better code reuse (boolean, choice, datetime, text field, open choice, group filtering, regex validation)
• Factory pattern implementation for component creation (BoxComponentFactory, SliverComponentFactory)
• EnableWhen caching to prevent redundant conditional logic evaluations
• InheritedWidget optimization using identical() checks for better performance

Changed

Code Quality & Architecture

• Major refactoring to reduce code duplication (~1040 insertions, ~694 deletions)
• Replaced ChoiceValueMixin with ChoiceBaseMixin for choice components - now exported publicly for custom implementations
• Improved state propagation to prevent updates on unmounted widgets
• Optimized InheritedWidget checks for better performance
• Better code organization with mixin-based approach
• Improved rendering performance by removing unnecessary builds

Fixed

Memory Management

• Memory leak fix: RendererQuestionnaireController.dispose() is now properly called from BaseQuestionnaireState.dispose()
• Proper cleanup of FocusNode and TextEditingController resources when questionnaire renderer is disposed

EnableWhen Logic

• EnableWhen behavior for slivers view renderer
• EnableWhen behavior for custom group items
• EnableWhen unit tests added to ensure correctness of conditional logic (AND/OR behavior)

Rendering Issues

• Keys problem in Slivers view causing incorrect widget reuse
• Proper subIndex handling for nested questionnaire items
• Proper linking of ScrollControllers and PageViewController
• Rendering optimizations to remove unnecessary rebuilds
• State propagation issues when widgets are unmounted

Breaking Changes

• None - this is the first stable release

Migration Notes

If upgrading from pre-1.0.0 versions (0.0.x):

• ChoiceValueMixin has been replaced with ChoiceBaseMixin - update any custom implementations
• Controller disposal is now automatic - remove manual disposal code if present
• EnableWhen behavior has been fixed - test any complex conditional logic.

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Breaking changes #

• questionnaire is now part of the QuestionnaireRendererController as a required parameter.
• initialQuestionnaireResponse is now part of the QuestionnaireRendererController as an optional parameter.

Breaking changes #

• rendererController is now required in all renderers.
• RendererQuestionnaireController was changed to allow you to extend it.
• QuestionnaireRendererController removed.

Added #

• Support for sliversInitialIndex in the rendererController for the QuestionnaireSliversViewRenderer.

Changed #

• BaseDecorator and SliverBaseDecorator don't use background color, to allow the user to define it from outside.

Fixed #

• Support for Slivers in the groupItemBuilder for the QuestionnaireSliversViewRenderer.

Fixed #

• childrenAssignerchanged to be optional.
• Intl version changed back to ^0.20.2.

Changed #

• Default text for boolean changed to its English version.

Added #

• childrenAssignerin QuestionnaireGroupWidgetBuilder to support default widgets for group items children.

Added #

• Support for initial values for types: choice, open-choice, date, dateTime, time, decimal, integer, string, text, url and quantity.

• Renderers QuestionnaireListViewRenderer, QuestionnairePageViewRenderer and QuestionnaireSliversViewRenderer implemented.
• Initial implementation, support for FHIR R4 Questionnaire Item Types: group, display, boolean, decimal, integer, date, dateTime, time, string, text, url, choice, open-choice and quantity.