[AAE-15082][AAE-15081] Resolve the options coming from a json variabl… (#8673)

* [AAE-15082][AAE-15081] Resolve the options coming from a json variable for a dropdown

* split method to smaller parts and remove duplications in units

* fix unit tests

* get variables from API call

* [AAE-15082] Add handle form variable

* replace variableId by variableName

* improve code

lib/core/src/lib/form/components/widgets/core/form-field-variable-options.ts

@@ -0,0 +1,23 @@
+/*!
+ * @license
+ * Copyright © 2005-2023 Hyland Software, Inc. and its affiliates. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export interface VariableConfig {
+    variableName: string;
+    optionsPath?: string;
+    optionsId?: string;
+    optionsLabel?: string;
+}

lib/core/src/lib/form/components/widgets/core/form-field.model.ts

@@ -27,6 +27,7 @@ import { FormWidgetModel } from './form-widget.model';
 import { FormFieldRule } from './form-field-rule';
 import { ProcessFormModel } from './process-form-model.interface';
 import { isNumberValue } from './form-field-utils';
+import { VariableConfig } from './form-field-variable-options';
 
 // Maps to FormFieldRepresentation
 export class FormFieldModel extends FormWidgetModel {
@@ -66,7 +67,7 @@ export class FormFieldModel extends FormWidgetModel {
     restLabelProperty: string;
     hasEmptyValue: boolean;
     className: string;
-    optionType: 'rest' | 'manual' ;
+    optionType: 'rest' | 'manual' | 'variable';
     params: FormFieldMetadata = {};
     hyperlinkUrl: string;
     displayText: string;
@@ -81,6 +82,7 @@ export class FormFieldModel extends FormWidgetModel {
     selectLoggedUser: boolean;
     groupsRestriction: string[];
     leftLabels: boolean = false;
+    variableConfig: VariableConfig;
 
     // container model members
     numberOfColumns: number = 1;
@@ -194,6 +196,7 @@ export class FormFieldModel extends FormWidgetModel {
             this.rule = json.rule;
             this.selectLoggedUser = json.selectLoggedUser;
             this.groupsRestriction = json.groupsRestriction?.groups;
+            this.variableConfig = json.variableConfig;
 
             if (json.placeholder && json.placeholder !== '' && json.placeholder !== 'null') {
                 this.placeholder = json.placeholder;

lib/core/src/lib/i18n/en.json

@@ -46,6 +46,7 @@
       "UPLOAD": "UPLOAD",
       "REQUIRED": "This is a required field",
       "REST_API_FAILED": "The server `{{ hostname }}` is not reachable",
+      "VARIABLE_DROPDOWN_OPTIONS_FAILED": "There was a problem loading dropdown elements. Please contact administrator.",
       "FILE_NAME": "File Name",
       "NO_FILE_ATTACHED": "No file attached",
       "VALIDATOR": {