Handle incompatible keyword in haddock3 yaml files

CHANGELOG.md

@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 
 * Hook useSaveWithGlobalRewrite() ([#161](https://github.com/i-VRESSE/workflow-builder/pull/161))
+* Support for if/then/else in JSON schema ([#160](https://github.com/i-VRESSE/workflow-builder/pull/160))
 
 ## @i-vresse/wb-core 3.0.1 - 2024-05-23
 

docs/schema.md

@@ -131,3 +131,27 @@ and `abcd.pdb` file has chain A and B with residues 1, 2, 3 and 4.
 
 Then the form will have restricted the `chain` prop to only allow `A` and `B`
 and will have restricted the sta and end prop to only allow 1, 2, 3 and 4.
+
+## If then else
+
+The `if`, `then` and `else` keywords can be used to [conditionally apply a schema](https://json-schema.org/understanding-json-schema/reference/conditionals#ifthenelse).
+
+For example to have the `foo` property only if the `bar` property is false use:
+
+```yaml
+    type: object
+    properties:
+      bar:
+        type: boolean
+    if:
+      properties:
+        bar:
+          const: true
+    then: {}
+    else:
+      properties:
+        foo:
+          type: string
+```
+
+Only supports simple const condition with one or more properties and not complex conditions like patterns. Also only a single if/tnen/else block per object is supported. It can be combined with [groups](uiSchema.md#uigroup).