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How to chat window user interface using listview

ListView can be customized as chat window. To achieve that, use the ListView template property and Avatar control.

* The Listview template property is used to showcase the ListView as chat window.
* Avatar control is used to design the image of contact person.

Refer the below template code snippet for Template of chat window.

let template =
  '<div class="settings">' +
  '${if(chat!=="receiver")}' +
  '<div id="content">' +
  '<div class="name">${text}</div>' +
  '<div id="info">${contact}</div></div>' +
  '${if(avatar!=="")}' +
  '<div id="image"><span class="e-avatar img1 e-avatar-circle">${avatar}</span></div>' +
  "${else}" +
  '<div id="image"><span class="${pic} img1 e-avatar e-avatar-circle"> </span></div>' +
  "${/if}" +
  "${else}" +
  '${if(avatar!=="")}' +
  '<div id="image2"><span class="e-avatar img2 e-avatar-circle">${avatar}</span></div>' +
  "${else}" +
  '<div id="image2"><span class="${pic} img2 e-avatar e-avatar-circle"> </span></div>' +
  "${/if}" +
  '<div id="content1">' +
  '<div class="name1">${text}</div>' +
  '<div id="info1">${contact}</div>' +
  "</div>" +
  "${/if}" +
  "</div>";

Chat order in template

In ListView template, we have rendered the list items based on receiver and sender information from dataSource of listview.

Adding messages to chat window

* Use textbox to get message from user.
* Add the textbox message to ListView dataSource using [addItem](../../api/list-view#additem) method.
document.getElementById("btn").addEventListener("click", e => {
  var value = document.getElementById("name").value;
  document
    .getElementById("List")
    .ej2_instances[0].addItem([
      {
        text: "Amenda",
        contact: value,
        id: "2",
        avatar: "A",
        pic: "",
        chat: "receiver"
      }
    ]);
});
Source
Preview
index.js
index.html
index.css
var template =
  '<div class="settings">' +
  '${if(chat!=="receiver")}' +
  '<div id="content">' +
  '<div class="name">${text}</div>' +
  '<div id="info">${contact}</div></div>' +
  '${if(avatar!=="")}' +
  '<div id="image"><span class="e-avatar img1 e-avatar-circle">${avatar}</span></div>' +
  "${else}" +
  '<div id="image"><span class="${pic} img1 e-avatar e-avatar-circle"> </span></div>' +
  "${/if}" +
  '${else}'+
 '${if(avatar!=="")}' +
  '<div id="image2"><span class="e-avatar img2 e-avatar-circle">${avatar}</span></div>' +
  "${else}" +
  '<div id="image2"><span class="${pic} img2 e-avatar e-avatar-circle"> </span></div>' +
  "${/if}" +
  '<div id="content1">' +
  '<div class="name1">${text}</div>' +
  '<div id="info1">${contact}</div>' +
  "</div>"+
  '${/if}'+
  "</div>";

//Define an array of JSON data
var dataSource = [
  {
    text: "Jenifer",
    contact: "Hi",
    id: "1",
    avatar: "",
    pic: "pic01", chat: "sender"
  },
  { text: "Amenda", contact: "Hello", id: "2", avatar: "A", pic: "", chat: "receiver" },
  {
    text: "Jenifer",
    contact: "What Knid of application going to launch",
    id: "4",
    avatar: "",
    pic: "pic02",chat: "sender"
  },
  {
    text: "Amenda ",
    contact: "A knid of Emergency broadcast App",
    id: "5",
    avatar: "A",
    pic: "", chat: "receiver"
  },
  {
    text: "Jacob",
    contact: "Can you please elaborate",
    id: "6",
    avatar: "",
    pic: "pic04",chat: "sender"
  },
];

var listObj = new ej.lists.ListView({

  //Set defined data to dataSource property.
    //Set the defined data to the dataSource property
  dataSource: dataSource,
  //Map the appropriate columns to the fields property
  fields: { text: "text" },
  //Set the width of the ListView
  width: "350px",
  //Enable the header of the ListView
  showHeader: true,
  //Set the header title
  headerTitle: "Chat",
  //Set the customized template
  template: template,
});

listObj.appendTo('#List');
var button = new ej.buttons.Button();

// Render initialized button.
button.appendTo('#btn');

document.getElementById('btn').addEventListener('click', (e) => { 
  var value = document.getElementById('name').value;
   document.getElementById('List').ej2_instances[0].addItem([{ text: "Amenda", contact: value, id: "2", avatar: "A", pic: "", chat: "receiver" }]);
   document.getElementById('name').value = "";
});
<!DOCTYPE html><html lang="en"><head>
    <title>Essential JS 2 for ListView </title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Essential JS 2 for ListView UI Control">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-lists/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-layouts/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/ej2-inputs/styles/material.css" rel="stylesheet">
    
    
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
</head>

<body>
    
    <div id="container">
        <div id="List" tabindex="1"></div>
        <div style="width: 350px;margin: 0 auto;"><input id="name" style="width: 275px" class="e-input" type="text" placeholder="Type your message">
        <button id="btn" style="float:right">Send</button></div>
    </div>


<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>
#container {
  visibility: hidden;
}

#loader {
  color: #008cff;
  height: 40px;
  width: 30%;
  position: absolute;
  font-family: "Helvetica Neue", "calibiri";
  font-size: 14px;
  top: 45%;
  left: 45%;
}

#List {
  margin: 0 auto;
  border: 1px solid #ccc;
}

#List .e-list-item {
  height: auto;
  cursor: pointer;
}

#List .e-list-header .e-text {
  font-family: sans-serif;
  font-size: 18px;
  line-height: 26px;
}

#List #info,
#List .name {
  font-size: 11px;
  line-height: 20px;
}

#List .name {
  padding-top: 3px;
  font-weight: 500;
   padding-left:150px;
}
#List #info {
  float: right;
  margin-right:10px;
}
.pic01 {
  background-image: url("https://ej2.syncfusion.com/demos/src/grid/images/1.png");
}

.pic02 {
  background-image: url("https://ej2.syncfusion.com/demos/src/grid/images/3.png");
}

.pic03 {
  background-image: url("https://ej2.syncfusion.com/demos/src/grid/images/5.png");
}

.pic04 {
  background-image: url("https://ej2.syncfusion.com/demos/src/grid/images/2.png");
}
/* csslint ignore:start */
.img2 {
  margin-left: 10px;
  margin-top: 2px !important;
  font-size: 13px;
}

#List #content1 {
  width: 200px;
  background-color: aliceblue;
  display: inline-block;
  margin: 5px;
  
}

#List #info1,
#List .name1 {
  font-size: 11px;
  line-height: 20px;
  margin-left: 10px;
}

#List .name1 {
  padding-top: 3px;
  font-weight: 500;
}
#List #content {
    margin: 5px;
    width: 200px;
    margin-left: 87px;
    background-color: aliceblue;
    display:inline-block
}
#image {
    float: right;
    display: inline-block;

}
#image2 {
    float: left;
    display: inline-block;

}
.img1 {
    margin-right: 10px;
    margin: 5px;
    font-size: 13px;
}
.e-listview .e-list-item {
  padding: 0 !important;
}
.e-listview .e-list-header{
  color: white !important;
}
.e-listview .e-list-header{
  background: rgb(2, 120, 215) !important;
}
#List.e-listview .e-hover {
  background-color: transparent;
}
/* csslint ignore:end */