save

src/app/shared/chat/group-messages/group-messages.page.ts

@@ -54,6 +54,7 @@ export class GroupMessagesPage implements OnInit, OnChanges, AfterViewInit, OnDe
   private scrollChangeCallback: () => void;
   currentPosition: any;
   startPosition: number;
+  scrollToBottomBtn = false;
 
   @Input() roomId:string;
   @Output() closeAllDesktopComponents:EventEmitter<any> = new EventEmitter<any>();
@@ -158,20 +159,35 @@ export class GroupMessagesPage implements OnInit, OnChanges, AfterViewInit, OnDe
     } 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 - 454.199951171875;
+
     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;
   }