intercept event only when there is suggestions

src/app/components/create-status/autosuggest/autosuggest.component.ts

@@ -15,6 +15,7 @@ export class AutosuggestComponent implements OnInit {
     hashtags: string[] = [];
 
     @Output() suggestionSelectedEvent = new EventEmitter<AutosuggestSelection>();
+    @Output() hasSuggestionsEvent = new EventEmitter<boolean>();
 
     private _pattern: string;
     @Input('pattern')
@@ -70,6 +71,13 @@ export class AutosuggestComponent implements OnInit {
                     }
                 }
             })
+            .then(() => {
+                if(this.hashtags.length > 0 || this.accounts.length > 0){
+                    this.hasSuggestionsEvent.next(true);
+                } else {
+                    this.hasSuggestionsEvent.next(false);
+                }
+            })
             .catch(err => {
                 this.notificationService.notifyHttpError(err);
             });

src/app/components/create-status/create-status.component.html

@@ -14,7 +14,8 @@
 
     <app-autosuggest class="status-form__autosuggest" *ngIf="autosuggestData" 
         [pattern]="autosuggestData" 
-        (suggestionSelectedEvent)="suggestionSelected($event)"></app-autosuggest>
+        (suggestionSelectedEvent)="suggestionSelected($event)"
+        (hasSuggestionsEvent)="suggestionsChanged($event)"></app-autosuggest> 
 
     <div class="status-form__mention-error" *ngIf="mentionTooFarAwayError">Error: mentions must be placed closer to the start in order to use multiposting.</div>
 

src/app/components/create-status/create-status.component.ts

@@ -475,8 +475,13 @@ export class CreateStatusComponent implements OnInit, OnDestroy {
         }
     }
 
+    private hasSuggestions: boolean;
+    suggestionsChanged(hasSuggestions: boolean) {
+        this.hasSuggestions = hasSuggestions;
+    }
+
     handleKeyDown(event: KeyboardEvent): boolean {
-        if(this.autosuggestData){           
+        if(this.hasSuggestions){           
             if (event.keyCode === DOWN_ARROW || event.keyCode === UP_ARROW || event.keyCode === ENTER) {
                 event.stopImmediatePropagation();
                 event.preventDefault();