save

src/app/pages/chat/messages/messages.page.html

@@ -74,6 +74,11 @@
       </div>
     </div>
   </div>
+  <ion-fab horizontal="end" vertical="bottom" slot="fixed">
+    <ion-fab-button *ngIf="scrollToBottomBtn" (click)="scrollToBottomClicked()" color="light" size="small">
+      <ion-icon name="chevron-down"></ion-icon>
+    </ion-fab-button>
+  </ion-fab>
 
 </ion-content>
 

src/app/pages/chat/messages/messages.page.ts

@@ -45,6 +45,7 @@ export class MessagesPage implements OnInit, AfterViewInit, OnDestroy {
   private scrollChangeCallback: () => void;
   currentPosition: any;
   startPosition: number;
+  scrollToBottomBtn = false;
   attendees: EventPerson[] = [];
 
   constructor(
@@ -122,23 +123,41 @@ export class MessagesPage implements OnInit, AfterViewInit, OnDestroy {
     } catch(err) { }
   }
 
+  scrollToBottomClicked(): void {
+    try {
+      this.myScrollContainer.nativeElement.scrollTop = this.myScrollContainer.nativeElement.scrollHeight;
+    } catch(err) { }
+  }
+
   ngAfterViewInit() {
     this.scrollChangeCallback = () => this.onContentScrolled(event);
     window.addEventListener('scroll', this.scrollChangeCallback, true);
   }
 
-   onContentScrolled(e) {
+  onContentScrolled(e) {
     this.startPosition = e.srcElement.scrollTop;
     let scroll = e.srcElement.scrollTop;
+    let windowHeight = e.srcElement.scrollHeight;
+    let containerHeight = windowHeight - 596.59997558594;
+    console.log(this.startPosition);
+    console.log(windowHeight);
+
+
     if (scroll > this.currentPosition) {
-      //this.showButton = false;
       //alert('BOTTOM');
     } else {
-      //this.showButton = true;
       //alert('UP');
       this.scrollingOnce = false;
     }
+    if((containerHeight - 100) > scroll){
+      this.scrollToBottomBtn = true;
+    }
+    else{
+      this.scrollToBottomBtn = false;
+    }
     this.currentPosition = scroll;
+    console.log(this.currentPosition);
+
   }
 
   ngOnDestroy() {