Add the possibility to set a datakey as readonly

@@ -209,7 +209,7 @@
         "templateCss": "",
         "controllerScript": "let $scope;\r\nlet settings;\r\nlet attributeService;\r\nlet toast;\r\nlet utils;\r\nlet types;\r\n\r\nself.onInit = function() {\r\n    var scope = self.ctx.$scope;\r\n    var id = self.ctx.$scope.$injector.get('utils').guid();\r\n    scope.formId = \"form-\"+id;\r\n    scope.ctx = self.ctx;\r\n}\r\n\r\nself.onDataUpdated = function() {\r\n    self.ctx.$scope.$broadcast('multiple-input-data-updated', self.ctx.$scope.formId);\r\n}\r\n",
         "settingsSchema": "{\n    \"schema\": {\n        \"type\": \"object\",\n        \"title\": \"MultipleInput\",\n        \"properties\": {\n            \"widgetTitle\": {\n                \"title\": \"Multiple input title\",\n                \"type\": \"string\",\n                \"default\": \"\"\n            },\n            \"attributesShared\": {\n                \"title\": \"Attributes are 'shared' (default value is 'server')\",\n                \"type\": \"boolean\",\n                \"default\": false\n            },\n            \"showResultMessage\":{\n                \"title\":\"Show result message\",\n                \"type\":\"boolean\",\n                \"default\":true\n            }\n        },\n        \"required\": []\n    },\n    \"form\": [\n        \"widgetTitle\",\n        \"attributesShared\",\n        \"showResultMessage\"\n    ]\n}",
-        "dataKeySettingsSchema": "{\n    \"schema\": {\n        \"type\": \"object\",\n        \"title\": \"DataKeySettings\",\n        \"properties\": {\n            \"inputTypeNumber\": {\n                \"title\": \"Datakey is a number\",\n                \"type\": \"boolean\",\n                \"default\": false\n            },\n            \"step\": {\n                \"title\": \"Step interval between valid values (only for numbers)\",\n                \"type\": \"number\",\n                \"default\": \"1\"\n            },\n            \"icon\": {\n                \"title\": \"Icon to show before input cell\",\n                \"type\": \"string\",\n                \"default\": \"\"\n            },\n            \"useCellStyleFunction\": {\n                \"title\": \"Use cell style function\",\n                \"type\": \"boolean\",\n                \"default\": false\n            },\n            \"cellStyleFunction\": {\n                \"title\": \"Cell style function: f(value)\",\n                \"type\": \"string\",\n                \"default\": \"\"\n            }\n        },\n        \"required\": []\n    },\n    \"form\": [\n        \"inputTypeNumber\",\n        \"step\",\n\t\t{\n    \t\t\"key\": \"icon\",\n\t\t\t\"type\": \"icon\"\n\t\t},\n        \"useCellStyleFunction\",\n        {\n            \"key\": \"cellStyleFunction\",\n            \"type\": \"javascript\"\n        }\n    ]\n}\n",
+        "dataKeySettingsSchema": "{\n    \"schema\": {\n        \"type\": \"object\",\n        \"title\": \"DataKeySettings\",\n        \"properties\": {\n            \"readOnly\": {\n                \"title\": \"Value is read only\",\n                \"type\": \"boolean\",\n                \"default\": false\n            },\n            \"inputTypeNumber\": {\n                \"title\": \"Datakey is a number\",\n                \"type\": \"boolean\",\n                \"default\": false\n            },\n            \"step\": {\n                \"title\": \"Step interval between valid values (only for numbers)\",\n                \"type\": \"number\",\n                \"default\": \"1\"\n            },\n            \"icon\": {\n                \"title\": \"Icon to show before input cell\",\n                \"type\": \"string\",\n                \"default\": \"\"\n            },\n            \"useCellStyleFunction\": {\n                \"title\": \"Use cell style function\",\n                \"type\": \"boolean\",\n                \"default\": false\n            },\n            \"cellStyleFunction\": {\n                \"title\": \"Cell style function: f(value)\",\n                \"type\": \"string\",\n                \"default\": \"\"\n            }\n        },\n        \"required\": []\n    },\n    \"form\": [\n        \"readOnly\",\n        \"inputTypeNumber\",\n        \"step\",\n\t\t{\n    \t\t\"key\": \"icon\",\n\t\t\t\"type\": \"icon\"\n\t\t},\n        \"useCellStyleFunction\",\n        {\n            \"key\": \"cellStyleFunction\",\n            \"type\": \"javascript\"\n        }\n    ]\n}\n",
         "defaultConfig": "{\"datasources\":[{\"type\":\"function\",\"name\":\"function\",\"dataKeys\":[{\"name\":\"f(x)\",\"type\":\"function\",\"label\":\"Sin\",\"color\":\"#2196f3\",\"settings\":{},\"_hash\":0.23592248334107624,\"funcBody\":\"return Math.round(1000*Math.sin(time/5000));\"}]}],\"timewindow\":{\"realtime\":{\"timewindowMs\":60000}},\"showTitle\":true,\"backgroundColor\":\"#fff\",\"color\":\"rgba(0, 0, 0, 0.87)\",\"padding\":\"8px\",\"settings\":{},\"title\":\"Update Multiple Attributes\",\"dropShadow\":true,\"enableFullscreen\":false,\"enableDataExport\":false,\"widgetStyle\":{},\"titleStyle\":{\"fontSize\":\"16px\",\"fontWeight\":400},\"useDashboardTimewindow\":true,\"showLegend\":false,\"actions\":{}}"
       }
     }

@@ -25,6 +25,7 @@
                         {{key.settings.icon}}
                     </md-icon>
                     <input name="key.name"
+                           ng-disabled="key.settings.readOnly"
                            ng-model="key.currentValue"
                            type="{{key.settings.inputType}}"
                            step="{{key.settings.step}}"
@@ -52,4 +53,4 @@
             {{ 'action.save' | translate }}
         </md-button>
     </div>
-</form>
\ No newline at end of file
+</form>