[TLC-1202] Centralise getTypeBindRelations to single static method

src/app/shared/form/builder/ds-dynamic-form-ui/ds-dynamic-type-bind-relation.service.spec.ts

@@ -9,12 +9,9 @@ import {
 } from '@angular/forms';
 import {
   DISABLED_MATCHER_PROVIDER,
-  DynamicFormControlRelation,
   DynamicFormRelationService,
   HIDDEN_MATCHER,
   HIDDEN_MATCHER_PROVIDER,
-  MATCH_VISIBLE,
-  OR_OPERATOR,
   REQUIRED_MATCHER_PROVIDER,
 } from '@ng-dynamic-forms/core';
 
@@ -85,7 +82,7 @@ describe('DSDynamicTypeBindRelationService test suite', () => {
     });
     it('Should get 1 related form models for mock relation model data', () => {
       const testModel = mockInputWithTypeBindModel;
-      testModel.typeBindRelations = getTypeBindRelations(['boundType']);
+      testModel.typeBindRelations = DsDynamicTypeBindRelationService.getTypeBindRelations(['boundType'], 'dc.type');
       const relatedModels = service.getRelatedFormModel(testModel);
       expect(relatedModels).toHaveSize(1);
     });
@@ -94,7 +91,7 @@ describe('DSDynamicTypeBindRelationService test suite', () => {
   describe('Test matchesCondition method', () => {
     it('Should receive one subscription to dc.type type binding"', () => {
       const testModel = mockInputWithTypeBindModel;
-      testModel.typeBindRelations = getTypeBindRelations(['boundType']);
+      testModel.typeBindRelations = DsDynamicTypeBindRelationService.getTypeBindRelations(['boundType'], 'dc.type');
       const dcTypeControl = new UntypedFormControl();
       dcTypeControl.setValue('boundType');
       let subscriptions = service.subscribeRelations(testModel, dcTypeControl);
@@ -103,7 +100,7 @@ describe('DSDynamicTypeBindRelationService test suite', () => {
 
     it('Expect hasMatch to be true (ie. this should be hidden)', () => {
       const testModel = mockInputWithTypeBindModel;
-      testModel.typeBindRelations = getTypeBindRelations(['boundType']);
+      testModel.typeBindRelations = DsDynamicTypeBindRelationService.getTypeBindRelations(['boundType'], 'dc.type');
       const dcTypeControl = new UntypedFormControl();
       dcTypeControl.setValue('boundType');
       testModel.typeBindRelations[0].when[0].value = 'anotherType';
@@ -118,7 +115,7 @@ describe('DSDynamicTypeBindRelationService test suite', () => {
 
     it('Expect hasMatch to be false (ie. this should NOT be hidden)', () => {
       const testModel = mockInputWithTypeBindModel;
-      testModel.typeBindRelations = getTypeBindRelations(['boundType']);
+      testModel.typeBindRelations = DsDynamicTypeBindRelationService.getTypeBindRelations(['boundType'], 'dc.type');
       const dcTypeControl = new UntypedFormControl();
       dcTypeControl.setValue('boundType');
       testModel.typeBindRelations[0].when[0].value = 'boundType';
@@ -134,18 +131,3 @@ describe('DSDynamicTypeBindRelationService test suite', () => {
   });
 
 });
-
-function getTypeBindRelations(configuredTypeBindValues: string[]): DynamicFormControlRelation[] {
-  const bindValues = [];
-  configuredTypeBindValues.forEach((value) => {
-    bindValues.push({
-      id: 'dc.type',
-      value: value,
-    });
-  });
-  return [{
-    match: MATCH_VISIBLE,
-    operator: OR_OPERATOR,
-    when: bindValues,
-  }];
-}

src/app/shared/form/builder/ds-dynamic-form-ui/ds-dynamic-type-bind-relation.service.ts

@@ -13,7 +13,6 @@ import {
   DynamicFormControlModel,
   DynamicFormControlRelation,
   DynamicFormRelationService,
-  MATCH_DISABLED,
   MATCH_ENABLED,
   MATCH_VISIBLE,
   OR_OPERATOR,
@@ -36,6 +35,48 @@ import { DYNAMIC_FORM_CONTROL_TYPE_RELATION_GROUP } from './ds-dynamic-form-cons
 @Injectable({ providedIn: 'root' })
 export class DsDynamicTypeBindRelationService {
 
+  /**
+   * Get the type bind values from the REST data for a specific field
+   * The return value is any[] in the method signature but in reality it's
+   * returning the 'relation' that'll be used for a dynamic matcher when filtering
+   * fields in type bind, made up of a 'match' outcome (make this field visible), an 'operator'
+   * (OR) and a 'when' condition (the bindValues array).
+   * @param configuredTypeBindValues  array of types from the submission definition (CONFIG_DATA)
+   * @param typeField
+   * @private
+   * @return DynamicFormControlRelation[] array with one relation in it, for type bind matching to show a field
+   */
+  public static getTypeBindRelations(configuredTypeBindValues: string[], typeField: string): DynamicFormControlRelation[] {
+    const bindValues = [];
+    configuredTypeBindValues.forEach((value) => {
+      bindValues.push({
+        id: typeField,
+        value: value,
+      });
+    });
+    // match: MATCH_VISIBLE means that if true, the field / component will be visible
+    // operator: OR means that all the values in the 'when' condition will be compared with OR, not AND
+    // when: the list of values to match against, in this case the list of strings from <type-bind>...</type-bind>
+    // Example: Field [x] will be VISIBLE if item type = book OR item type = book_part
+    //
+    // The opposing match value will be the dc.type for the workspace item
+    //
+    // MATCH_ENABLED is now also returned, so that hidden type-bound fields that are 'required'
+    // do not trigger false validation errors
+    return [
+      {
+        match: MATCH_ENABLED,
+        operator: OR_OPERATOR,
+        when: bindValues,
+      },
+      {
+        match: MATCH_VISIBLE,
+        operator: OR_OPERATOR,
+        when: bindValues,
+      },
+    ];
+  }
+
   constructor(@Optional() @Inject(DYNAMIC_MATCHERS) private dynamicMatchers: DynamicFormControlMatcher[],
               protected dynamicFormRelationService: DynamicFormRelationService,
               protected formBuilderService: FormBuilderService,
@@ -218,30 +259,4 @@ export class DsDynamicTypeBindRelationService {
     return subscriptions;
   }
 
-  /**
-    * Helper function to construct a typeBindRelations array
-  * @param configuredTypeBindValues
-  */
-  public getTypeBindRelations(configuredTypeBindValues: string[]): DynamicFormControlRelation[] {
-    const bindValues = [];
-    configuredTypeBindValues.forEach((value) => {
-      bindValues.push({
-        id: 'dc.type',
-        value: value,
-      });
-    });
-    return [
-      {
-        match: MATCH_ENABLED,
-        operator: OR_OPERATOR,
-        when: bindValues,
-      },
-      {
-        match: MATCH_VISIBLE,
-        operator: OR_OPERATOR,
-        when: bindValues,
-      },
-    ];
-  }
-
 }

src/app/shared/form/builder/parsers/field-parser.ts

@@ -2,14 +2,7 @@ import {
   Inject,
   InjectionToken,
 } from '@angular/core';
-import {
+import { DynamicFormControlLayout } from '@ng-dynamic-forms/core';
-  DynamicFormControlLayout,
-  DynamicFormControlRelation,
-  MATCH_DISABLED,
-  MATCH_ENABLED,
-  MATCH_VISIBLE,
-  OR_OPERATOR,
-} from '@ng-dynamic-forms/core';
 import { TranslateService } from '@ngx-translate/core';
 import uniqueId from 'lodash/uniqueId';
 
@@ -22,6 +15,7 @@ import {
   isNotNull,
   isNotUndefined,
 } from '../../../empty.util';
+import { DsDynamicTypeBindRelationService } from '../ds-dynamic-form-ui/ds-dynamic-type-bind-relation.service';
 import {
   DsDynamicInputModel,
   DsDynamicInputModelConfig,
@@ -100,7 +94,7 @@ export abstract class FieldParser {
         metadataFields: this.getAllFieldIds(),
         hasSelectableMetadata: isNotEmpty(this.configData.selectableMetadata),
         isDraggable,
-        typeBindRelations: isNotEmpty(this.configData.typeBind) ? this.getTypeBindRelations(this.configData.typeBind,
+        typeBindRelations: isNotEmpty(this.configData.typeBind) ? DsDynamicTypeBindRelationService.getTypeBindRelations(this.configData.typeBind,
           this.parserOptions.typeField) : null,
         groupFactory: () => {
           let model;
@@ -329,7 +323,7 @@ export abstract class FieldParser {
 
     // If typeBind is configured
     if (isNotEmpty(this.configData.typeBind)) {
-      (controlModel as DsDynamicInputModel).typeBindRelations = this.getTypeBindRelations(this.configData.typeBind,
+      (controlModel as DsDynamicInputModel).typeBindRelations = DsDynamicTypeBindRelationService.getTypeBindRelations(this.configData.typeBind,
         this.parserOptions.typeField);
     }
 
@@ -358,45 +352,6 @@ export abstract class FieldParser {
       );
   }
 
-  /**
-   * Get the type bind values from the REST data for a specific field
-   * The return value is any[] in the method signature but in reality it's
-   * returning the 'relation' that'll be used for a dynamic matcher when filtering
-   * fields in type bind, made up of a 'match' outcome (make this field visible), an 'operator'
-   * (OR) and a 'when' condition (the bindValues array).
-   * @param configuredTypeBindValues  array of types from the submission definition (CONFIG_DATA)
-   * @param typeField
-   * @private
-   * @return DynamicFormControlRelation[] array with one relation in it, for type bind matching to show a field
-   */
-  private getTypeBindRelations(configuredTypeBindValues: string[], typeField: string): DynamicFormControlRelation[] {
-    const bindValues = [];
-    configuredTypeBindValues.forEach((value) => {
-      bindValues.push({
-        id: typeField,
-        value: value,
-      });
-    });
-    // match: MATCH_VISIBLE means that if true, the field / component will be visible
-    // operator: OR means that all the values in the 'when' condition will be compared with OR, not AND
-    // when: the list of values to match against, in this case the list of strings from <type-bind>...</type-bind>
-    // Example: Field [x] will be VISIBLE if item type = book OR item type = book_part
-    //
-    // The opposing match value will be the dc.type for the workspace item
-    return [
-      {
-        match: MATCH_ENABLED,
-        operator: OR_OPERATOR,
-        when: bindValues,
-      },
-      {
-        match: MATCH_VISIBLE,
-        operator: OR_OPERATOR,
-        when: bindValues,
-      },
-    ];
-  }
-
   protected hasRegex() {
     return hasValue(this.configData.input.regex);
   }