SAC Custom Widget Validation Command

Validate SAP Analytics Cloud custom widget files (widget.json and widget.js) for schema compliance, required fields, and best practices.

Usage

/widget-validate [file_path]
/widget-validate widget.json
/widget-validate src/widget.js
/widget-validate --all

Validation Categories

1. widget.json Schema Validation

Required Root Fields:

• id - Unique identifier (reverse domain notation: com.company.widget)
• version - Semantic version (1.0.0)
• name - Display name
• vendor - Company/author name
• webcomponents - Array of component definitions

Required webcomponents Fields:

• kind - Component type (main, styling, builder)
• tag - HTML custom element tag (lowercase with hyphens)
• url - JavaScript file URL

Optional but Recommended:

• description - Widget description
• license - License type
• icon - Widget icon path
• integrity - SHA256 hash for production
• properties - Property definitions
• methods - Script-callable methods
• events - Custom events
• dataBindings - Data binding configuration

2. widget.js Structure Validation

Required Elements:

• Web Component class extending HTMLElement
• customElements.define() call matching tag in JSON
• attachShadow({ mode: "open" }) for Shadow DOM

Required Lifecycle Functions:

• onCustomWidgetBeforeUpdate(changedProperties)
• onCustomWidgetAfterUpdate(changedProperties)

Recommended Lifecycle Functions:

• onCustomWidgetResize()
• onCustomWidgetDestroy()

Property Patterns:

• Getter/setter for each defined property
• propertiesChanged event dispatch on set

3. Data Binding Validation

If dataBindings is defined:

• Each binding must have feeds array
• Feeds must have id, description, type
• Valid feed types: dimension, mainStructureMember, measure

4. Security Validation

Production Readiness:

• ignoreIntegrity should be false for production
• integrity hash should be present and valid
• URLs should use HTTPS

Warning-Level:

• ignoreIntegrity: true (development only)
• HTTP URLs (not recommended)
• Missing CORS considerations in comments

Validation Process

1. Identify file type (JSON or JavaScript)
2. Parse and validate structure
3. Check required fields and patterns
4. Cross-validate JSON and JS (if both present)
5. Report findings with severity levels

Output Format

## SAC Widget Validation Report

**File**: [filename]
**Type**: [widget.json / widget.js]
**Status**: [PASS / FAIL / WARNINGS]

### Critical Issues (X found)
1. [Line X]: [Issue description]
   **Current**: `[problematic code]`
   **Required**: `[correct pattern]`

### Warnings (X found)
1. [Line X]: [Issue description]
   **Recommendation**: [How to fix]

### Suggestions (X found)
1. [Issue description]
   **Best Practice**: [Recommendation]

### Summary
- Critical: X (must fix)
- Warnings: X (should fix)
- Suggestions: X (consider)

### Cross-Validation
[Results of JSON ↔ JS consistency check if applicable]

Examples

Validate widget.json

/widget-validate widget.json

Validate widget.js

/widget-validate widget.js

Validate All Widget Files

/widget-validate --all

Validation Rules Detail

Tag Naming Convention

// GOOD: lowercase with hyphens
"tag": "my-custom-widget"

// BAD: uppercase or underscores
"tag": "MyCustomWidget"
"tag": "my_custom_widget"

Property Type Validation

// Valid types
"type": "string"
"type": "integer"
"type": "number"
"type": "boolean"
"type": "array"
"type": "object"
"type": "Color"     // SAC special type
"type": "Selection" // SAC special type

Lifecycle Function Check

// REQUIRED - will fail validation if missing
onCustomWidgetBeforeUpdate(changedProperties) { }
onCustomWidgetAfterUpdate(changedProperties) { }

// RECOMMENDED - warning if missing
onCustomWidgetResize() { }
onCustomWidgetDestroy() { }

customElements.define Match

// Tag in widget.json
"tag": "my-widget"

// Must match in widget.js
customElements.define("my-widget", MyWidget);

Implementation Instructions

When this command is invoked:

1. Parse the file path argument
2. If --all, find all widget.json and widget.js files in the project
3. For each file:
   • Read file contents
   • Determine file type (JSON or JavaScript)
   • Apply appropriate validation rules
   • Record issues with line numbers where possible
4. If both widget.json and widget.js found in same directory:
   • Cross-validate tag names
   • Verify property definitions match getters/setters
   • Check event definitions match dispatches
5. Present findings in the format above
6. Provide summary with counts by severity