use html attribute data-origin-value for save original value parts of document

i need it for workaround `data side errors` in tests

jsonform/gadget_json_generated_form_child.js

@@ -617,6 +617,7 @@
       error_message,
       input,
       first_path,
+      type_changed,
       queue = RSVP.Queue();
 
     if (json_field instanceof Array) {
@@ -645,15 +646,11 @@
       type = getDocumentType(default_value);
     }
 
-    // XXX bad peace of code
-    // i do not sure that type can be computed so
-    // but our schema in slapos bad
-    if (!type) {
-      if (json_field.properties &&
-          json_field.required &&
-          json_field.required.length > 0) {
-        type = "object";
-      }
+    if (typeof type === "string") {
+      // it's only for simple types so we not use
+      // complex type detection
+      type_changed = default_value !== undefined &&
+                     typeof default_value !== type;
     }
 
     div = document.createElement("div");
@@ -708,6 +705,8 @@
 
     if (json_field.enum !== undefined) {
       input = render_enum(json_field, default_value);
+      // XXX take in account existing type with enum
+      type_changed = false;
     }
 
     if (type === "boolean") {
@@ -721,10 +720,11 @@
         input = document.createElement("input");
         if (default_value !== undefined) {
           if (typeof default_value === "object") {
-            default_value = JSON.stringify(default_value);
-          }
+            input.value = JSON.stringify(default_value);
+          } else {
             input.value = default_value;
           }
+        }
 
         if (type === "integer" || type === "number") {
           if (default_value === undefined && typeof json_field.default === "number") {
@@ -732,8 +732,16 @@
           }
           input.type = "number";
           input.setAttribute("data-json-type", type);
+          type_changed = default_value !== undefined &&
+                         typeof default_value !== "number";
           if (type === "integer") {
             input.setAttribute("step", "1");
+            if (default_value !== undefined &&
+                parseInt(default_value, 10) !== default_value) {
+              // original json_document contain float schema
+              // limit integer we can save original document
+              type_changed = true;
+            }
           }
           if (type === "number") {
             input.setAttribute("step", "any");
@@ -786,6 +794,9 @@
       gadget.props.inputs.push(input);
       input.name = first_path;
       input.required = options.required;
+      if (type_changed) {
+        input.setAttribute('data-origin-value', JSON.stringify(default_value));
+      }
       // XXX for gui
       //input.setAttribute("class", "slapos-parameter");
       div_input.appendChild(input);
@@ -1291,6 +1302,9 @@
         var json_dict = {},
           k;
         g.props.inputs.forEach(function (input) {
+          if (input.hasAttribute('data-origin-value')) {
+            json_dict[input.name] = JSON.parse(input.getAttribute('data-origin-value'));
+          } else {
              if (input.required || input.value !== "") {
               var type = input.getAttribute('data-json-type');
               if (type === 'number') {
@@ -1313,6 +1327,7 @@
                 json_dict[input.name] = input.value;
               }
             }
+          }
         });
         for (k in json_dict) {
           if (json_dict.hasOwnProperty(k)) {
@@ -1578,10 +1593,15 @@
       var gadget = this,
         field_list = this.props.inputs,
         i,
+        input,
         changed = false;
       // on form data field
       for (i = 0; i < field_list.length; i = i + 1) {
         if (evt.target === field_list[i]) {
+          input = evt.target;
+          if (input.hasAttribute('data-origin-value')) {
+            input.removeAttribute('data-origin-value');
+          }
           changed = true;
         }
       }