First pass at a Hanging Protocol implementation and editor (LT-131)

Packages/hangingprotocols/client/helpers/displayConstraint.js

@@ -0,0 +1,39 @@
+function humanize(text) {
+    var humanized = text.replace(/([A-Z])/g, ' $1'); // insert a space before all caps
+    humanized = humanized.replace(/^./, function(str) { // uppercase the first character
+        return str.toUpperCase();
+    })
+    return humanized;
+}
+
+UI.registerHelper('displayConstraint', function(attribute, constraint) {
+    if (!constraint) {
+        return;
+    }
+
+    if (!attribute) {
+        return;
+    }
+
+    var validatorType = Object.keys(constraint)[0];
+    if (!attribute) {
+        return;
+    }
+
+    var validator = Object.keys(constraint[validatorType])[0];
+    if (!attribute) {
+        return;
+    }
+
+    var value = constraint[validatorType][validator];
+    if (value === undefined) {
+        return;
+    }
+
+    var comparator = validator;
+    if (validator === 'value') {
+        comparator = validatorType;
+    }
+
+    return humanize(attribute) + ' ' + humanize(comparator).toLowerCase() + ' ' + value;
+});