feat(list-value): show hierarchy of list node (DEV-1092)

src/app/workspace/resource/values/list-value/list-value.component.html

@@ -1,8 +1,11 @@
 <span *ngIf="mode !== 'read' && listRootNode !== undefined">
 
     <!-- button to select a list node -->
-    <span [matTooltip]="(!selectedNode && !listRootNode.children.length) ? 'This list doesn\'t have any node values' : 'Select list value'" [matTooltipPosition]="'above'">
-        <button mat-stroked-button [matMenuTriggerFor]="mainMenu" type="button" placeholder="List value" [disabled]="!selectedNode && !listRootNode.children.length">
+    <span
+        [matTooltip]="(!selectedNode && !listRootNode.children.length) ? 'This list doesn\'t have any node values' : 'Select list value'"
+        [matTooltipPosition]="'above'">
+        <button mat-stroked-button [matMenuTriggerFor]="mainMenu" type="button" placeholder="List value"
+            [disabled]="!selectedNode && !listRootNode.children.length">
 
             <!-- if no node is selected: display list label; if the list does not have any list nodes, the button should be disabled -->
             <span *ngIf="!selectedNode">{{listRootNode.label}}</span>
@@ -17,7 +20,7 @@
         <span *ngFor="let child of listRootNode.children">
             <span *ngIf="child.children && child.children.length > 0">
                 <button mat-menu-item [matMenuTriggerFor]="menu.childMenu" (click)="getSelectedNode(child)"
-                        type="button">
+                    type="button">
                     {{child.label}}
                 </button>
                 <app-sublist-value #menu [children]="child.children" (selectedNode)="getSelectedNode($event)">
@@ -36,29 +39,28 @@
         <span class="custom-error-message">New value must be different than the current value.</span>
     </mat-error>
     <mat-error *ngIf="valueFormControl.hasError('duplicateValue')">
-        <span class="custom-error-message">This value already exists for this property. Duplicate values are not allowed.</span>
+        <span class="custom-error-message">This value already exists for this property. Duplicate values are not
+            allowed.</span>
     </mat-error>
 </span>
 <span *ngIf="mode === 'read'; else showForm" class="read-mode-view">
-    <span class="rm-value">{{valueFormControl.value}}</span>
+    <span class="rm-value list">
+        <span class="hierarchy" *ngFor="let item of selectedNodeHierarchy, let first = first, let last = last">
+            <mat-icon *ngIf="!first">chevron_right</mat-icon>
+            <span [class.last]="last">{{ item }}</span>
+        </span>
+    </span>
     <span class="rm-comment" *ngIf="shouldShowComment">{{commentFormControl.value}}</span>
 </span>
 <ng-template #showForm>
     <span [formGroup]="form">
-    <mat-form-field class="large-field child-value-component" *ngIf="mode === 'read'" floatLabel="never">
+        <mat-form-field class="large-field child-value-component" *ngIf="mode === 'read'" floatLabel="never">
             <input [formControlName]="'value'" class="value" type="text" placeholder="List value" matInput readonly>
-    </mat-form-field>
-    <mat-form-field class="large-field value-component-comment">
-        <textarea matInput
-                  cdkTextareaAutosize
-                  cdkAutosizeMinRows="1"
-                  cdkAutosizeMaxRows="6"
-                  [formControlName]="'comment'"
-                  class="comment"
-                  placeholder="Comment"
-                  type="text"
-                  spellcheck="false">
+        </mat-form-field>
+        <mat-form-field class="large-field value-component-comment">
+            <textarea matInput cdkTextareaAutosize cdkAutosizeMinRows="1" cdkAutosizeMaxRows="6"
+                [formControlName]="'comment'" class="comment" placeholder="Comment" type="text" spellcheck="false">
         </textarea>
-    </mat-form-field>
+        </mat-form-field>
     </span>
-</ng-template>
+</ng-template>

src/app/workspace/resource/values/list-value/list-value.component.spec.ts

@@ -5,6 +5,7 @@ import { MatDialogModule } from '@angular/material/dialog';
 import { MatInputModule } from '@angular/material/input';
 import { MatMenuModule } from '@angular/material/menu';
 import { MatSnackBarModule } from '@angular/material/snack-bar';
+import { MatTooltipModule } from '@angular/material/tooltip';
 import { By } from '@angular/platform-browser';
 import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
 import {
@@ -40,7 +41,7 @@ class TestHostDisplayValueComponent implements OnInit {
 
         MockResource.getTestThing().subscribe(res => {
             const inputVal: ReadListValue =
-        res.getValuesAs('http://0.0.0.0:3333/ontology/0001/anything/v2#hasListItem', ReadListValue)[0];
+                res.getValuesAs('http://0.0.0.0:3333/ontology/0001/anything/v2#hasListItem', ReadListValue)[0];
             this.displayInputVal = inputVal;
             this.mode = 'read';
         });
@@ -92,6 +93,7 @@ describe('ListValueComponent', () => {
                 MatInputModule,
                 MatMenuModule,
                 MatSnackBarModule,
+                MatTooltipModule,
                 ReactiveFormsModule,
             ],
             providers: [
@@ -114,6 +116,18 @@ describe('ListValueComponent', () => {
         let commentInputNativeElement;
 
         beforeEach(() => {
+            const valuesSpy = TestBed.inject(DspApiConnectionToken);
+            (valuesSpy.v2.list as jasmine.SpyObj<ListsEndpointV2>).getList.and.callFake(
+                (rootNodeIri: string) => {
+                    const res = new ListNodeV2();
+                    res.id = 'http://rdfh.ch/lists/0001/treeList01';
+                    res.label = 'Tree list node 01';
+                    res.isRootNode = false;
+                    res.children = [];
+                    return of(res);
+                }
+            );
+
             testHostFixture = TestBed.createComponent(TestHostDisplayValueComponent);
             testHostComponent = testHostFixture.componentInstance;
             testHostFixture.detectChanges();
@@ -158,7 +172,7 @@ describe('ListValueComponent', () => {
 
             expect(testHostComponent.inputValueComponent.mode).toEqual('update');
 
-            expect(valuesSpy.v2.list.getList).toHaveBeenCalledTimes(1);
+            expect(valuesSpy.v2.list.getList).toHaveBeenCalledTimes(3);
             expect(valuesSpy.v2.list.getList).toHaveBeenCalledWith('http://rdfh.ch/lists/0001/treeList');
             expect(testHostComponent.inputValueComponent.listRootNode.children.length).toEqual(0);
 

src/app/workspace/resource/values/list-value/list-value.component.ts

@@ -14,7 +14,6 @@ import { Subscription } from 'rxjs';
 import { DspApiConnectionToken } from 'src/app/main/declarations/dsp-api-tokens';
 import { BaseValueDirective } from 'src/app/main/directive/base-value.directive';
 import { ErrorHandlerService } from 'src/app/main/services/error-handler.service';
-import { NotificationService } from 'src/app/main/services/notification.service';
 
 // https://stackoverflow.com/questions/45661010/dynamic-nested-reactive-form-expressionchangedafterithasbeencheckederror
 const resolvedPromise = Promise.resolve(null);
@@ -42,6 +41,8 @@ export class ListValueComponent extends BaseValueDirective implements OnInit, On
 
     customValidators = [];
 
+    selectedNodeHierarchy: string[] = [];
+
     constructor(
         @Inject(FormBuilder) private _fb: FormBuilder,
         @Inject(DspApiConnectionToken) private _dspApiConnection: KnoraApiConnection,
@@ -52,6 +53,7 @@ export class ListValueComponent extends BaseValueDirective implements OnInit, On
 
     getInitValue(): string | null {
         if (this.displayValue !== undefined) {
+            this.getReadModeValue(this.displayValue.listNode);
             return this.displayValue.listNode;
         } else {
             return null;
@@ -160,4 +162,40 @@ export class ListValueComponent extends BaseValueDirective implements OnInit, On
         this.valueFormControl.setValue(item.id);
     }
 
+    getReadModeValue(nodeIri: string): void {
+        const rootNodeIris = this.propertyDef.guiAttributes;
+        for (const rootNodeIri of rootNodeIris) {
+            const trimmedRootNodeIRI = rootNodeIri.substr(7, rootNodeIri.length - (1 + 7));
+            this._dspApiConnection.v2.list.getList(trimmedRootNodeIRI).subscribe(
+                (response: ListNodeV2) => {
+                    if (!response.children.length) { // this shouldn't happen since users cannot select the root node
+                        this.selectedNodeHierarchy.push(response.label);
+                    } else {
+                        this.selectedNodeHierarchy = this._getHierarchy(nodeIri, response.children);
+                    }
+                }, (error: ApiResponseError) => {
+                    this._errorHandler.showMessage(error);
+                });
+        }
+    }
+
+    _getHierarchy(selectedNodeIri: string, children: ListNodeV2[]): string[] {
+        for (let i = 0; i < children.length; i++) {
+            const node = children[i];
+            if (node.id !== selectedNodeIri) {
+                if (node.children) {
+                    const path = this._getHierarchy(selectedNodeIri, node.children);
+
+                    if (path) {
+                        path.unshift(node.label);
+                        return path;
+                    }
+                }
+            } else {
+                return [node.label];
+            }
+        }
+    }
+
+
 }

src/assets/style/_viewer.scss

@@ -2,14 +2,25 @@
 
 .read-mode-view {
   font: 400 15px/24px sans-serif;
-  .rm-value, .rm-comment {
+
+  .rm-value,
+  .rm-comment {
     display: block;
     margin: 0px;
   }
 
   .rm-value.text-value {
     white-space: pre-wrap;
   }
+
+  .rm-value.list,
+  .rm-value .hierarchy {
+    display: inline-flex;
+
+    .last {
+      font-weight: bold;
+    }
+  }
 }
 
 .child-value-component,
@@ -36,6 +47,7 @@
   display: inline-block;
   vertical-align: bottom;
   width: 49%;
+
   &:nth-child(2) {
     padding-left: 2%;
   }
@@ -91,6 +103,7 @@
 }
 
 .value-action {
+
   .material-icons,
   .mat-icon {
     font-size: 18px;
@@ -139,9 +152,10 @@
   background-color: inherit !important;
 }
 
-code, pre {
+code,
+pre {
   font-family: monospace !important;
-  background-color: hsla(0,0%,78%,.3);
+  background-color: hsla(0, 0%, 78%, .3);
   padding: .15em;
   border-radius: 2px;
-}
+}