Use ng select for multiselect

1 files changed, 38 insertions, 0 deletions

diff --git a/client/src/app/shared/shared-forms/select/select-tags.component.ts b/client/src/app/shared/shared-forms/select/select-tags.component.ts
new file mode 100644
index 000000000..93d199037
--- /dev/null
+++ b/client/src/app/shared/shared-forms/select/select-tags.component.ts
@@ -0,0 +1,38 @@
+import { Component, Input, forwardRef } from '@angular/core'
+import { NG_VALUE_ACCESSOR, ControlValueAccessor } from '@angular/forms'
+
+@Component({
+  selector: 'my-select-tags',
+  styleUrls: [ './select-shared.component.scss', './select-tags.component.scss' ],
+  templateUrl: './select-tags.component.html',
+  providers: [
+    {
+      provide: NG_VALUE_ACCESSOR,
+      useExisting: forwardRef(() => SelectTagsComponent),
+      multi: true
+    }
+  ]
+})
+export class SelectTagsComponent implements ControlValueAccessor {
+  @Input() availableItems: string[] = []
+  @Input() selectedItems: string[] = []
+
+  propagateChange = (_: any) => { /* empty */ }
+
+  writeValue (items: string[]) {
+    this.selectedItems = items
+    this.propagateChange(this.selectedItems)
+  }
+
+  registerOnChange (fn: (_: any) => void) {
+    this.propagateChange = fn
+  }
+
+  registerOnTouched () {
+    // Unused
+  }
+
+  onModelChange () {
+    this.propagateChange(this.selectedItems)
+  }
+}