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HTML

              
                %html{"ng-app" => "swankyChat", "ng-cloak" => "true"}

  .container
  
    .inbox
      
      %aside
        
        %ul{"ng-controller" => "chatCtrl as chat"}
        
          %div{"ng-repeat" => "chat in chats"}
        
            %li{"ng-click" => "uid(chat.id)"}

              %img{:class => "avatar", :src => "{{chat.avatar}}"}

              %p{:class => "username"} {{chat.username}}
      
      %main{"ng-controller" => "chatCtrl as chat"}
      
        .init
      
          %i{:class => "fa fa-inbox"}
          
          %h4 Choose a conversation from the left
        
        .loader 
          %p
          %h4 Loading
        
        / Set A Ng Repeat For Our Messages || Check To See If Our Value (Which Is Set Via Ng Click) Is Equal To The Id Of The Message List We Want To Show
        .message-wrap{"ng-repeat" => "message in chats", "ng-show" => "value == message.id"}
          
          / Repeat Each Item In The Array Seperately
          .message{"ng-repeat" => "i in message.messages track by $index"}
          
            %p {{i}}

            %img{'ng-src' => "{{message.avatar}}"}
            
        %footer
        
          %form{"ng-submit" => "add()"}
        
            %input{:type => "text", :placeholder => "Enter a message", "ng-model" => "text"}

            %input{:type => "submit", :value => "Send"}
          
              
            
!

CSS

              
                // Variables
$bg-color: #2EC4B6;

$inbox-primary: #EDF2F4;
$inbox-secondary: lighten($bg-color, 7%);
$inbox-width: 650px;
$inbox-height: 450px;
$inbox-radius: 4px;

// Universal Selector
* {
  margin: 0; padding: 0;
  box-sizing: border-box;
  font-family: 'Montserrat', sans-serif;
}

// Default Styles
html,body {
  background: linear-gradient(180deg, $bg-color, #9EB1E9);
  overflow-x: hidden;
}

// Container
.container {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

// Inbox Styles
.inbox {
  background: $inbox-primary;
  width: $inbox-width;
  height: $inbox-height;
  display: flex;
  border-radius: $inbox-radius;
  // Aside Styles
  aside {
    background: $inbox-secondary;
    flex: 1 1 auto;
    height: 100%;
    border-top-left-radius: $inbox-radius;
    border-bottom-left-radius: $inbox-radius;
    .avatar {
      width: 30px;
      height: 30px;
      border: 2px solid #FFF;
      border-radius: 100%;
    }
    // Li Elements In Aside
    li {
      background: darken($inbox-secondary, 3%);
      list-style: none;
      color: #FFF;
      display: flex;
      justify-content: space-between;
      padding: 0 2em;
      align-items: center;
      height: 5em;
      font-size: 0.8em;
      cursor: pointer;
      border-bottom: 1px solid lighten($inbox-secondary, 2%);
      border-top-left-radius: $inbox-radius;
      &:hover {
        background: darken($inbox-secondary, 5%);
      }
    }
  }
  // Our Main Content Where Conversations Will Be Listed
  main {
    background: $inbox-primary;
    height: 100%;
    flex: 1 1 70%;
    border-top-right-radius: $inbox-radius;
    border-bottom-right-radius: $inbox-radius;
    transform: scale(1.035);
    .message-wrap {
      height: 88%;
      overflow-y: scroll;
    }
    .message {
      background: $inbox-secondary;
      width: 70%;
      margin: 1em 6em;
      padding: 1em;
      border-radius: $inbox-radius;
      opacity: 1;
      transition: opacity ease-in-out .45s;
      p {
        font-size: 0.68em;
        color: #FFF;
        font-weight: 300;
      }
      img {
        width: 30px;
        height: 30px;
        border-radius: 100%;
        transform: translateX(-70px) translateY(-20px);
        float: left;
      }
      &:nth-of-type(even) {
        background: darken($inbox-secondary, 6%);
        margin: 1em 1em;
      }
    }
    // Our Footer To Our Main Content, Contains The Submit Form
    footer {
      position: fixed;
      bottom: 0;
      height: 12%;
      width: 100%;
      display: flex;
      align-items: center;
      border-top: 1px solid darken($inbox-primary, 4%);
      input[type="text"] {
        border: none;
        background: transparent;
        padding: 0.8em;
        outline: none;
        color: #AAA;
        width: 100%;
      }
      input[type="submit"] {
        background: $inbox-secondary;
        color: #FFF;
        width: 17%;
        border-radius: 4px;
        padding: 0.8em;
        margin: 0 1em;
        border: none;
        cursor: pointer;
        appearance: none;
      }
      form {
        width: 100%;
        display: flex;
        justify-content: space-between;
      }
    }
  }
}

// Initial Start Up Screen
.init {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-flow: column wrap;
  height: 100%;
  position: absolute;
  left: 0;
  right: 0;
  z-index: -1;
  text-align: center;
  i {
    font-size: 5em;
    color: $inbox-secondary;
  }
  h4 {
    margin: 1em auto;
    color: $inbox-secondary;
  }
}

// Custom Animation Loading Screen
.loader {
  opacity: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-flow: column wrap;
  height: 100%;
  position: absolute;
  margin: 0 auto;
  left: 0;
  right: 0;
  z-index: -1;
  text-align: center;
  p {
    background: $inbox-secondary;
    width: 20px;
    height: 20px;
    border-radius: 100%;
    animation: loading 2000ms cubic-bezier(0.470, 0.000, 0.745, 0.715) infinite;
    &:before {
      content: '';
      background: $inbox-secondary;
      width: 40px;
      height: 40px;
      opacity: 1;
      display: block;
      transform: translateX(-10px) translateY(-10px);
      border-radius: 100%;
      animation: loading 2000ms cubic-bezier(0.470, 0.000, 0.745, 0.715) infinite;
      animation-delay: 50ms;
    }
  }
  h4 {
    margin: 1em auto;
    color: $inbox-secondary;
  }
}

// Loading Animation
@keyframes loading {
  0% {
    opacity: 0;
  }
  50% {
    opacity: 0.7;
  }
  100% {
    opacity: 0;
  }
}

// Custom Scrollbars
::-webkit-scrollbar {
    width: 0px;
}
 
::-webkit-scrollbar-track {
  background: transparent;
}
 
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
}
              
            
!

JS

              
                angular.module("swankyChat", [])

// Set Up Chat Controller
.controller("chatCtrl", function($scope, $timeout, $rootScope) {
  $scope.chats = [{
    id: 0,
    username: "Leela",
    avatar: "https://imgflip.com/s/meme/Futurama-Leela.jpg",
    messages: [
      "I can explain. It's very valuable. You won't have time for sleeping, soldier, not with all the bed making you'll be doing",
      "Who am I making this out to? We'll go deliver this crate like professionals, and then we'll go home",
      "No! The cat shelter's on to me. I never loved you",
      "Oh Leela! You're the only person I could turn to",
      "Um, is this the boring, peaceful kind of taking to the streets",
      "That's right, baby. I ain't your loverboy Flexo, the guy you love so much. You even love anyone pretending to be him!"
    ]
  }, {
    id: 1,
    username: "Bender",
    avatar: "http://orig02.deviantart.net/9689/f/2012/027/9/c/mr_bender______classy__by_sgtconker1r-d4nqpzu.png",
    messages: [
      "Stop! Don't shoot fire stick in space canoe! Cause explosive decompression!",
      "Fry! Stay back! He's too powerful! You guys aren't Santa!",
      "Hi, I'm a naughty nurse, and I really need someone to talk to. $9.95 a minute",
      "Who are you, my warranty?!",
      "I will destroy you"
    ]
  }, {
    id: 2,
    username: "Fry",
    avatar: "http://www.wallpaperno.com/thumbnails/detail/20121027/futurama%20fry%201920x1080%20wallpaper_www.wallpaperno.com_68.jpg",
    messages: [
      "Ooh, name it after me! But I've never been to the moon!",
      "You don't know how to do any of those",
      "The key to victory is discipline, and that means a well made bed",
      "Stop bickering or I'm going to come back there and change your opinions manually",
      "Can we have Bender Burgers again"
    ]
  }, {
    id: 3,
    username: 'Zoidberg',
    avatar: "http://images2.fanpop.com/images/photos/3300000/Zoidberg-futurama-3305418-1024-768.jpg",
    messages: [
      "All I want is to be a monkey of moderate intelligence who wears a suit",
      "Oh, I don't have time for this",
      "No! The kind with looting and maybe starting a few fires!",
      "Now, now. Perfectly symmetrical violence never solved anything",
      "Dissect its brain"
    ]
  }];
  
  // Assign Pushed Messages To A User
  $scope.text;
  $scope.add = function() {
    var vlu = $scope.value;
    if($scope.text) {
      $scope.chats[vlu].messages.push(this.text);
      $scope.text = '';
      console.log(vlu);
    }
  }

  // Setting The Value Scope Equal To The Chat.id Which Is Retrieved Via Ng Click - We Pass The Chat.id Through The Function
  $scope.value;
  $scope.uid = function(ix) {
    console.log(ix);

    function ixy() {
      $rootScope.value = ix;
    }
    // Delay Our Scope Change To Create A Smoother Transition
    $timeout(ixy, 750);
  }

});

// Animation Styles
$(function() {

  var index = 0;
  
  function initScroll() {
    $(".message-wrap").animate({ 
      scrollTop: $("main").height() 
    }, 1000);
  }
  
  function scroll() {
    $(".message-wrap").animate({
      scrollTop: 9000
    }, 1000);
  }
  
  $("input[type='submit']").click(function() {
    scroll();
  });

  $("aside").find("li").click(function() {
    initScroll();
    $(".init").animate({
      'opacity': '0'
    }, 500);
  });

  $("aside").find("li").click(function() {
    if (index == 1) {
      index = 0;
      $(".message-wrap").find(".message").css({
        'opacity': '1'
      });
    } else {
      index = 0;
      $(".message-wrap").find(".message").css({
        'opacity': '0'
      });
      $(".loader").delay(500).animate({
        'opacity': '1'
      });
      setTimeout(function() {
        index = 0;
        $(".message-wrap").find(".message").css({
          'opacity': '1'
        });
        $(".loader").animate({
          'opacity': '0'
        });
      }, 3000)
    }
  });
});
              
            
!
999px

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