Add common validator for typedInput fields

Closes #1104

editor/js/validators.js

@@ -15,5 +15,21 @@
  **/
 RED.validators = {
     number: function(){return function(v) { return v!=='' && !isNaN(v);}},
-    regex: function(re){return function(v) { return re.test(v);}}
+    regex: function(re){return function(v) { return re.test(v);}},
+    typedInput: function(ptypeName) { return function(v) {
+        var ptype = $("#node-input-"+ptypeName).val() || this[ptypeName];
+        if (ptype === 'json') {
+            try {
+                JSON.parse(v);
+                return true;
+            } catch(err) {
+                return false;
+            }
+        } else if (ptype === 'flow' || ptype === 'global' ) {
+            return RED.utils.validatePropertyExpression(v);
+        } else if (ptype === 'num') {
+            return /^[+-]?[0-9]*\.?[0-9]*([eE][-+]?[0-9]+)?$/.test(v);
+        }
+        return true;
+    }}
 };

nodes/core/core/20-inject.html

@@ -175,22 +175,7 @@
         defaults: {
             name: {value:""},
             topic: {value:""},
-            payload: {value:"", validate:function(v) {
+            payload: {value:"", validate: RED.validators.typedInput("payloadType")},
-                var ptype = $("#node-input-payloadType").val() || this.payloadType;
-                if (ptype === 'json') {
-                    try {
-                        JSON.parse(v);
-                        return true;
-                    } catch(err) {
-                        return false;
-                    }
-                } else if (ptype === 'flow' || ptype === 'global' ) {
-                    return RED.utils.validatePropertyExpression(v);
-                } else if (ptype === 'num') {
-                    return /^[+-]?[0-9]*\.?[0-9]*([eE][-+]?[0-9]+)?$/.test(v);
-                }
-                return true;
-            }},
             payloadType: {value:"date"},
             repeat: {value:""},
             crontab: {value:""},