fix scrolling

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

@@ -38,7 +38,7 @@
       <ion-label> Esta conversa passou a grupo</ion-label><br />
       <ion-label>A conversa original mantêm-se como chat individual</ion-label>
     </div>
-    <div class="container-width-100" *ngFor="let msg of messages" #scrollMe>
+    <div class="container-width-100" *ngFor="let msg of messages; let last = last" #scrollMe>
       <div *ngIf="msg.t != 'r'" class='incoming-{{msg.u.username!=loggedUser.me.username}} max-width-45'>
         <div class="title">
           <ion-label>{{msg.u.name}}</ion-label>
@@ -46,6 +46,7 @@
         </div>
         <div>
           <ion-label>{{msg.msg}}</ion-label>
+          {{last ? scrollToBottom() : ''}}
         </div>
       </div>
       <div *ngIf="msg.t == 'r'" class="info-text">

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

@@ -1,4 +1,4 @@
-import { Component, OnChanges, OnInit, Input, SimpleChanges, Output, EventEmitter, ViewChild, ElementRef, AfterViewChecked} from '@angular/core';
+import { Component, OnChanges, OnInit, Input, SimpleChanges, Output, EventEmitter, ViewChild, ElementRef, AfterViewChecked, AfterViewInit, OnDestroy} from '@angular/core';
 import { ActionSheetController, AnimationController, MenuController, ModalController, PopoverController } from '@ionic/angular';
 import { AlertService } from 'src/app/services/alert.service';
 import { AuthService } from 'src/app/services/auth.service';
@@ -16,7 +16,7 @@ import { ChatOptionsFeaturesPage } from 'src/app/modals/chat-options-features/ch
   templateUrl: './group-messages.page.html',
   styleUrls: ['./group-messages.page.scss'],
 })
-export class GroupMessagesPage implements OnInit, OnChanges, AfterViewChecked {
+export class GroupMessagesPage implements OnInit, OnChanges, AfterViewInit, OnDestroy {
   showLoader: boolean;
   isGroupCreated:boolean;
   loggedUser: any;
@@ -30,6 +30,11 @@ export class GroupMessagesPage implements OnInit, OnChanges, AfterViewChecked {
   members:any;
 
   loggedUserChat:any;
+  scrollingOnce:boolean = true;
+  private scrollChangeCallback: () => void;
+  currentPosition: any;
+  startPosition: number;
+
   @Input() roomId:string;
   @Output() closeAllDesktopComponents:EventEmitter<any> = new EventEmitter<any>();
   @Output() showEmptyContainer:EventEmitter<any> = new EventEmitter<any>();
@@ -54,8 +59,8 @@ export class GroupMessagesPage implements OnInit, OnChanges, AfterViewChecked {
     this.isGroupCreated = true;
   }
   ngOnChanges(changes: SimpleChanges): void {
-    this.getRoomInfo();
-    this.scrollToBottom();
+    //this.getRoomInfo();
+    //this.scrollToBottom();
   }
 
   ngOnInit() {
@@ -63,18 +68,49 @@ export class GroupMessagesPage implements OnInit, OnChanges, AfterViewChecked {
     this.getRoomInfo();
     this.serverLongPull();
     console.log(this.roomId);
+    this.setStatus('online');
   }
 
-  ngAfterViewChecked() {
-    //this.scrollToBottom();
+  setStatus(status:string){
+    let body = {
+      message: '',
+      status: status,
+    }
+    this.chatService.setUserStatus(body).subscribe(res => {
+      console.log(res);
+    })
   }
 
   scrollToBottom(): void {
     try {
-      this.myScrollContainer.nativeElement.scrollTop = this.myScrollContainer.nativeElement.scrollHeight;
+      if(this.scrollingOnce){
+        this.myScrollContainer.nativeElement.scrollTop = this.myScrollContainer.nativeElement.scrollHeight;
+      }
     } catch(err) { }
-    finally {
+  }
+
+  ngAfterViewInit() {
+    this.scrollChangeCallback = () => this.onContentScrolled(event);
+    window.addEventListener('scroll', this.scrollChangeCallback, true);
+  }
+
+   onContentScrolled(e) {
+    this.startPosition = e.srcElement.scrollTop;
+    let scroll = e.srcElement.scrollTop;
+    if (scroll > this.currentPosition) {
+      //this.showButton = false;
+      //alert('BOTTOM');
+    } else {
+      //this.showButton = true;
+      //alert('UP');
+      this.scrollingOnce = false;
     }
+    this.currentPosition = scroll;
+  }
+
+  ngOnDestroy() {
+    this.setStatus('away');
+    window.removeEventListener('scroll', this.scrollChangeCallback, true);
   }
 
   openGroupContactsPage(){
@@ -101,9 +137,9 @@ export class GroupMessagesPage implements OnInit, OnChanges, AfterViewChecked {
   get watch(){
     this.getRoomInfo();
     console.log('here watching');
-
     return this.roomId;
   }
+
   getRoomInfo(){
     this.showLoader = true;
     this.chatService.getRoomInfo(this.roomId).subscribe(room=>{
@@ -112,7 +148,7 @@ export class GroupMessagesPage implements OnInit, OnChanges, AfterViewChecked {
         this.roomName = this.room.name.split('-').join(' ');
       }
       this.getGroupContacts(this.room);
-      this.loadGroupMessages(this.room);
+      //this.loadGroupMessages(this.room);
       this.showLoader = false;
     });
   }
@@ -136,13 +172,14 @@ export class GroupMessagesPage implements OnInit, OnChanges, AfterViewChecked {
       });
     }
   }
-  loadGroupMessages(room:any){
-    console.log('here'+room.t);
+
+  loadGroupMessages(roomId){
+    //console.log('here'+room.t);
 
     this.showLoader = true;
     //If group is private call getGroupMembers
-    if(room.t === 'p'){
-      console.log('private');
+    /* if(room.t === 'p'){
+      console.log('private'); */
 
       this.chatService.getPrivateGroupMessages(this.roomId).subscribe(res=>{
         console.log(res);
@@ -152,15 +189,16 @@ export class GroupMessagesPage implements OnInit, OnChanges, AfterViewChecked {
 
         this.showLoader = false;
       });
-    }
+  /*   } */
     //Otherwise call getChannelMembers for públic groups
-    else{
+    /* else{
       this.chatService.getPublicGroupMessages(this.roomId).subscribe(res=>{
         console.log(res);
         this.messages = res['messages'].reverse();
       });
-    }
+    } */
   }
+
   sendMessage(){
 
     let body = {
@@ -172,7 +210,8 @@ export class GroupMessagesPage implements OnInit, OnChanges, AfterViewChecked {
 
     this.chatService.sendMessage(body).subscribe(res=> {
      /*  this.loadGroupMessages(); */
-     this.getRoomInfo();
+     //this.getRoomInfo();
+     this.scrollingOnce = true;
     });
     this.message = "";
   }
@@ -244,7 +283,8 @@ export class GroupMessagesPage implements OnInit, OnChanges, AfterViewChecked {
         this.roomName = res.data.name.split('-').join(' ');
         console.log(this.roomName);
 
-        this.getRoomInfo();
+        //this.getRoomInfo();
+        this.loadGroupMessages(this.roomId);
         //this.modalController.dismiss();
       };
 
@@ -277,7 +317,8 @@ export class GroupMessagesPage implements OnInit, OnChanges, AfterViewChecked {
     popover.onDidDismiss().then(res=>{
       console.log(res);
       if(res.data){
-        this.getRoomInfo();
+        this.loadGroupMessages(this.roomId);
+        //this.getRoomInfo();
         //this.modalController.dismiss();
       };
 
@@ -314,7 +355,8 @@ export class GroupMessagesPage implements OnInit, OnChanges, AfterViewChecked {
     await modal.present();
 
     modal.onDidDismiss().then(()=>{
-      this.getRoomInfo();
+      //this.getRoomInfo();
+      this.loadGroupMessages(this.roomId)
     });
   }
 
@@ -407,7 +449,8 @@ export class GroupMessagesPage implements OnInit, OnChanges, AfterViewChecked {
       // Show Error
       //showMessage(response.statusText);
       //this.loadMessages()
-      this.messages = res['messages'].filter(data => data.t != 'au');
+      let msgOnly = res['messages'].filter(data => data.t != 'au');
+      this.messages = msgOnly.reverse();
       console.log(this.messages);
       // Reconnect in one second
       if(this.route.url != "/home/chat"){

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

@@ -31,7 +31,7 @@
     </ion-refresher-content>
   </ion-refresher>
   <div class="messages" #scrollMe>
-    <div class="container-width-100" *ngFor="let msg of messages">
+    <div class="container-width-100" *ngFor="let msg of messages; let last = last">
       <div class='incoming-{{msg.u.username!=loggedUser.me.username}} max-width-45'>
         <div class="title">
           <ion-label>{{msg.u.name}}</ion-label>
@@ -39,6 +39,7 @@
         </div>
         <div>
           <ion-label>{{msg.msg}}</ion-label>
+          {{last ? scrollToBottom() : ''}}
         </div>
       </div>
     </div>

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

@@ -1,4 +1,4 @@
-import { AfterViewChecked, Component, ElementRef, EventEmitter, Input, OnChanges, OnInit, Output, SimpleChanges, ViewChild } from '@angular/core';
+import { AfterViewChecked, AfterViewInit, Component, ElementRef, EventEmitter, Input, OnChanges, OnDestroy, OnInit, Output, SimpleChanges, ViewChild } from '@angular/core';
 import { AnimationController, ModalController, PopoverController } from '@ionic/angular';
 import { AlertService } from 'src/app/services/alert.service';
 import { AuthService } from 'src/app/services/auth.service';
@@ -16,7 +16,7 @@ import { ChatOptionsFeaturesPage } from 'src/app/modals/chat-options-features/ch
   templateUrl: './messages.page.html',
   styleUrls: ['./messages.page.scss'],
 })
-export class MessagesPage implements OnInit, AfterViewChecked, OnChanges {
+export class MessagesPage implements OnInit, OnChanges, AfterViewInit, OnDestroy {
   showLoader: boolean;
 
   @ViewChild('scrollMe') private myScrollContainer: ElementRef;
@@ -37,7 +37,11 @@ export class MessagesPage implements OnInit, AfterViewChecked, OnChanges {
   @Output() openNewEventPage:EventEmitter<any> = new EventEmitter<any>();
 
 
-  connection  = connection
+  connection  = connection;
+  scrollingOnce:boolean = true;
+  private scrollChangeCallback: () => void;
+  currentPosition: any;
+  startPosition: number;
 
   constructor(
     public popoverController: PopoverController,
@@ -70,11 +74,17 @@ export class MessagesPage implements OnInit, AfterViewChecked, OnChanges {
     console.log(this.roomId);
     console.log("Chat route", this.route.url)
 
+    this.setStatus('online');
   }
 
-  ngOnDestroy(){
-    this.checktimeOut = false;
-    console.log('On Destroy')
+  setStatus(status:string){
+    let body = {
+      message: '',
+      status: status,
+    }
+    this.chatService.setUserStatus(body).subscribe(res => {
+      console.log(res);
+    })
   }
 
   notImplemented(){
@@ -93,16 +103,38 @@ export class MessagesPage implements OnInit, AfterViewChecked, OnChanges {
     ev.target.complete();
   }
 
-  ngAfterViewChecked() {
-    //this.scrollToBottom();
-  }
-
   scrollToBottom(): void {
     try {
-      this.myScrollContainer.nativeElement.scrollTop = this.myScrollContainer.nativeElement.scrollHeight;
+      if(this.scrollingOnce){
+        this.myScrollContainer.nativeElement.scrollTop = this.myScrollContainer.nativeElement.scrollHeight;
+        //this.scrollingOnce = false;
+      }
     } catch(err) { }
-    finally {
+  }
+
+  ngAfterViewInit() {
+    this.scrollChangeCallback = () => this.onContentScrolled(event);
+    window.addEventListener('scroll', this.scrollChangeCallback, true);
+  }
+
+   onContentScrolled(e) {
+    this.startPosition = e.srcElement.scrollTop;
+    let scroll = e.srcElement.scrollTop;
+    if (scroll > this.currentPosition) {
+      //this.showButton = false;
+      //alert('BOTTOM');
+    } else {
+      //this.showButton = true;
+      //alert('UP');
+      this.scrollingOnce = false;
     }
+    this.currentPosition = scroll;
+  }
+
+  ngOnDestroy() {
+    this.checktimeOut = false;
+    this.setStatus('away');
+    window.removeEventListener('scroll', this.scrollChangeCallback, true);
   }
 
   openBookMeetingComponent(){
@@ -125,6 +157,7 @@ export class MessagesPage implements OnInit, AfterViewChecked, OnChanges {
     }
 
     this.chatService.sendMessage(body).subscribe(res=> {
+      this.scrollingOnce = true;
     });
     this.message = "";
   }