merged from https://github.com/wordnik/swagger-ui/pull/642

dist/swagger-ui.js

@@ -294,11 +294,19 @@ function program8(depth0,data) {
 function program10(depth0,data) {
   
   var buffer = "", stack1;
-  buffer += "\n    <span style=\"float:right\"><a href=\"http://online.swagger.io/validator/debug?url=";
+  buffer += "\n    <span style=\"float:right\"><a href=\"";
+  if (stack1 = helpers.validatorUrl) { stack1 = stack1.call(depth0, {hash:{},data:data}); }
+  else { stack1 = depth0.validatorUrl; stack1 = typeof stack1 === functionType ? stack1.apply(depth0) : stack1; }
+  buffer += escapeExpression(stack1)
+    + "/debug?url=";
   if (stack1 = helpers.url) { stack1 = stack1.call(depth0, {hash:{},data:data}); }
   else { stack1 = depth0.url; stack1 = typeof stack1 === functionType ? stack1.apply(depth0) : stack1; }
   buffer += escapeExpression(stack1)
-    + "\"><img id=\"validator\" src=\"http://online.swagger.io/validator?url=";
+    + "\"><img id=\"validator\" src=\"";
+  if (stack1 = helpers.validatorUrl) { stack1 = stack1.call(depth0, {hash:{},data:data}); }
+  else { stack1 = depth0.validatorUrl; stack1 = typeof stack1 === functionType ? stack1.apply(depth0) : stack1; }
+  buffer += escapeExpression(stack1)
+    + "?url=";
   if (stack1 = helpers.url) { stack1 = stack1.call(depth0, {hash:{},data:data}); }
   else { stack1 = depth0.url; stack1 = typeof stack1 === functionType ? stack1.apply(depth0) : stack1; }
   buffer += escapeExpression(stack1)
@@ -1303,6 +1311,14 @@ helpers = this.merge(helpers, Handlebars.helpers); data = data || {};
       });
     };
 
+    SwaggerUi.prototype.setOption = function(option, value) {
+      return this.options[option] = value;
+    };
+
+    SwaggerUi.prototype.getOption = function(option) {
+      return this.options[option];
+    };
+
     SwaggerUi.prototype.updateSwaggerUi = function(data) {
       this.options.url = data.url;
       return this.load();
@@ -1512,8 +1528,12 @@ helpers = this.merge(helpers, Handlebars.helpers); data = data || {};
       if (!this.model.info.version) {
         this.model.info.version = this.model.apiVersion;
       }
-      if (this.model.url.indexOf('http://localhost') === -1 && this.model.swaggerVersion === 2) {
+      if ("validatorUrl" in opts.swaggerOptions) {
+        return this.model.validatorUrl = opts.swaggerOptions.validatorUrl;
+      } else if (this.model.url.match(/https?:\/\/localhost/) && this.model.swaggerVersion === 2) {
         return this.model.validatorUrl = this.model.url;
+      } else {
+        return this.model.validatorUrl = "http://online.swagger.io/validator";
       }
     };
 

src/main/coffeescript/SwaggerUi.coffee

@@ -39,6 +39,14 @@ class SwaggerUi extends Backbone.Router
     # Event handler for when the baseUrl/apiKey is entered by user
     @headerView.on 'update-swagger-ui', (data) => @updateSwaggerUi(data)
 
+  # Set an option after initializing
+  setOption: (option,value) ->
+      @options[option] = value
+
+  # Get the value of a previously set option
+  getOption: (option) ->
+      @options[option]
+
   # Event handler for when url/key is received from user
   updateSwaggerUi: (data) ->
     @options.url = data.url

src/main/coffeescript/view/MainView.coffee

@@ -27,8 +27,15 @@ class MainView extends Backbone.View
     if !@model.info.version
       @model.info.version = @model.apiVersion
 
-    if @model.url.indexOf('http://localhost') is -1 and @model.swaggerVersion is 2
+    if "validatorUrl" of opts.swaggerOptions
+      # Validator URL specified explicitly
+      @model.validatorUrl = opts.swaggerOptions.validatorUrl
+    else if @model.url.match(/https?:\/\/localhost/) and @model.swaggerVersion is 2
+      # Localhost override
       @model.validatorUrl = @model.url
+    else
+      # Default validator
+      @model.validatorUrl = "http://online.swagger.io/validator"
  
   render: ->
     # Render the outer container for resources

src/main/template/main.handlebars

@@ -19,7 +19,7 @@
     , <span style="font-variant: small-caps">api version</span>: {{info.version}}
     {{/if}}]
     {{#if validatorUrl}}
-    <span style="float:right"><a href="http://online.swagger.io/validator/debug?url={{url}}"><img id="validator" src="http://online.swagger.io/validator?url={{url}}"></a>
+    <span style="float:right"><a href="{{validatorUrl}}/debug?url={{url}}"><img id="validator" src="{{validatorUrl}}?url={{url}}"></a>
     </span>
     {{/if}}
     </h4>