Imported DPUB-ARIA roles into our schema

README.md

@@ -91,7 +91,7 @@ A publication <strong class="rfc">must</strong> include a [`duration`](https://r
 > As a starting point, we'll use [Digital Publishing WAI-ARIA Module 1.0]() along with HTML semantics.
 > For comics, we'll look into [EPUB Structural Semantics Vocabulary](https://www.w3.org/TR/epub-ssv-11/) as well, but it feels oddly too specific and not enough at the same time. 
 
-*For now this is a work in progress in a separate document: [List of roles](role.md)* 
+*For now this is a work in progress in a separate document: [List of roles](roles.md)* 
 
 ## Appendix A - Examples
 

schema/object.schema.json

@@ -21,8 +21,10 @@
     },
     "role": {
       "type": ["string", "array"],
+      "$ref": "roles.schema.json",
       "items": {
-        "type": "string"
+        "type": "string",
+        "$ref": "roles.schema.json"
       }
     },
     "children": {

schema/roles.schema.json

@@ -0,0 +1,46 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "$id": "https://readium.org/guided-navigation/schema/roles.schema.json",
+  "title": "Readium Guided Navigation Roles",
+  "enum": [
+    "abstract",
+    "acknowledgments",
+    "afterword",
+    "appendix",
+    "backlink",
+    "biblioentry",
+    "bibliography",
+    "biblioref",
+    "chapter",
+    "colophon",
+    "conclusion",
+    "cover",
+    "credit",
+    "credits",
+    "dedication",
+    "endnote",
+    "endnotes",
+    "epigraph",
+    "epilogue",
+    "errata",
+    "example",
+    "footnote",
+    "foreword",
+    "glossary",
+    "glossref",
+    "index",
+    "introduction",
+    "noteref",
+    "notice",
+    "pagebreak",
+    "pagelist",
+    "part",
+    "preface",
+    "prologue",
+    "pullquote",
+    "qna",
+    "subtitle",
+    "tip",
+    "toc"
+  ]
+}