1 files changed, 59 insertions, 0 deletions
diff --git a/accessible/jsat/Constants.jsm b/accessible/jsat/Constants.jsm
new file mode 100644
index 000000000..152604431
--- /dev/null
+++ b/accessible/jsat/Constants.jsm
@@ -0,0 +1,59 @@
+const Ci = Components.interfaces;
+const Cu = Components.utils;
+
+Cu.import('resource://gre/modules/XPCOMUtils.jsm');
+
+this.EXPORTED_SYMBOLS = ['Roles', 'Events', 'Relations',
+                         'Filters', 'States', 'Prefilters'];
+
+function ConstantsMap (aObject, aPrefix, aMap = {}, aModifier = null) {
+  let offset = aPrefix.length;
+  for (var name in aObject) {
+    if (name.indexOf(aPrefix) === 0) {
+      aMap[name.slice(offset)] = aModifier ?
+        aModifier(aObject[name]) : aObject[name];
+    }
+  }
+
+  return aMap;
+}
+
+XPCOMUtils.defineLazyGetter(
+  this, 'Roles',
+  function() {
+    return ConstantsMap(Ci.nsIAccessibleRole, 'ROLE_');
+  });
+
+XPCOMUtils.defineLazyGetter(
+  this, 'Events',
+  function() {
+    return ConstantsMap(Ci.nsIAccessibleEvent, 'EVENT_');
+  });
+
+XPCOMUtils.defineLazyGetter(
+  this, 'Relations',
+  function() {
+    return ConstantsMap(Ci.nsIAccessibleRelation, 'RELATION_');
+  });
+
+XPCOMUtils.defineLazyGetter(
+  this, 'Prefilters',
+  function() {
+    return ConstantsMap(Ci.nsIAccessibleTraversalRule, 'PREFILTER_');
+  });
+
+XPCOMUtils.defineLazyGetter(
+  this, 'Filters',
+  function() {
+    return ConstantsMap(Ci.nsIAccessibleTraversalRule, 'FILTER_');
+  });
+
+XPCOMUtils.defineLazyGetter(
+  this, 'States',
+  function() {
+    let statesMap = ConstantsMap(Ci.nsIAccessibleStates, 'STATE_', {},
+                                 (val) => { return { base: val, extended: 0 }; });
+    ConstantsMap(Ci.nsIAccessibleStates, 'EXT_STATE_', statesMap,
+                 (val) => { return { base: 0, extended: val }; });
+    return statesMap;
+  });