Sunday, 12 April 2015

Create a Reusable Login Directive or LoginTag in HTML5 using Angular js

In this post we are going to see how to create a reusable login directive or login tag in HTML5 using angular js.

Every time when we create the web application we have some things are do repeatedly , creating login page, register page etc. so to render the Login form now we are going to create a Login Tag which can be used in any web application.

<div class="" style="margin-top:10px">
    <div>
     <login-form action="/Validation/Login"></login-form>
  </div>

</div>

Like above we have to use the login-form tag in any web application to render a Login form like below.





Login directive in angular js


var mainApp = angular.module('mainApp', []);

mainApp.directive('loginForm', function () {
    return {
        template: '<div class="card card-container">'+      
            '<img id="profile-img" class="profile-img-card"  
                       src="../../Content/avatar.png" />'+
            '<p id="profile-name" class="profile-name-card"></p>'+
            '<form method="post" action="{{action}}" validate-invalid 
                        class="form-signin" id="loginform">' +
                '<span id="reauth-email" class="reauth-email"></span>'+
                 '<input type="email" name="UserName" ng-model="user.email" 
                         id="inputEmail" 
                         class="form-control" placeholder="Email address" required>' +
                 '<input type="password" name="Password" 
                         ng-model="user.password" 
                         id="inputPassword" class="form-control" 
                         placeholder="Password" required>' +
                 '<div id="remember" class="checkbox">'+
                    '<label><input name="RememberMe" type="checkbox" ng-model="user.remember"                            value="remember-me"> Remember me</label>' +
                '</div>'+
                '<button ng-disabled="!form.enableSubmit" 
                         class="btn btn-lg btn-primary btn-block btn-signin" 
                         type="submit" >Sign in</button>' +
            '</form>'+
            '<a href="#" class="forgot-password" 
                         style="color:rgb(104, 145, 162);">Forgot the password?</a>'+
        '</div>',
        scope: {
            action:"@"
        },
        restrict: "E",
        link: function (scope,element,attr,cntrl) {
        }
    }

});

For the login-form we have to give the Post action method to redirect to post url for validation.


CSS:
:::::::::

.card-container.card {
    width: 350px;
    padding: 40px 40px;
}

.btn {
    font-weight: 700;
    height: 36px;
    -moz-user-select: none;
    -webkit-user-select: none;
    user-select: none;
    cursor: default;
}

/*
 * Card component
 */
.card {
    background-color: #F7F7F7;
    /* just in case there no content*/
    padding: 20px 25px 30px;
    margin: 0 auto 25px;
    margin-top: 50px;
    /* shadows and rounded borders */
    -moz-border-radius: 2px;
    -webkit-border-radius: 2px;
    border-radius: 2px;
    -moz-box-shadow: 0px 2px 2px rgba(0, 0, 0, 0.3);
    -webkit-box-shadow: 0px 2px 2px rgba(0, 0, 0, 0.3);
    box-shadow: 0px 2px 2px rgba(0, 0, 0, 0.3);
}

.profile-img-card {
    width: 96px;
    height: 96px;
    margin: 0 auto 10px;
    display: block;
    -moz-border-radius: 50%;
    -webkit-border-radius: 50%;
    border-radius: 50%;
}

/*
 * Form styles
 */
.profile-name-card {
    font-size: 16px;
    font-weight: bold;
    text-align: center;
    margin: 10px 0 0;
    min-height: 1em;
}

.reauth-email {
    display: block;
    color: #404040;
    line-height: 2;
    margin-bottom: 10px;
    font-size: 14px;
    text-align: center;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
}

.form-signin #inputEmail,
.form-signin #inputPassword {
    direction: ltr;
    height: 44px;
    font-size: 16px;
}

.form-signin input[type=email],
.form-signin input[type=password],
.form-signin input[type=text],
.form-signin button {
    width: 100%;
    display: block;
    margin-bottom: 10px;
    z-index: 1;
    position: relative;
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
}

.form-signin .form-control:focus {
    border-color: rgb(104, 145, 162);
    outline: 0;
    -webkit-box-shadow: inset 0 1px 1px rgba(0,0,0,.075),0 0 8px rgb(104, 145, 162);
    box-shadow: inset 0 1px 1px rgba(0,0,0,.075),0 0 8px rgb(104, 145, 162);
}

.btn-signin {
    /*background-color: #4d90fe; */
    background-color: rgb(104, 145, 162);
    /* background-color: linear-gradient(rgb(104, 145, 162), rgb(12, 97, 33));*/
    padding: 0px;
    font-weight: 700;
    font-size: 14px;
    height: 36px;
    -moz-border-radius: 3px;
    -webkit-border-radius: 3px;
    border-radius: 3px;
    border: none;
    -o-transition: all 0.218s;
    -moz-transition: all 0.218s;
    -webkit-transition: all 0.218s;
    transition: all 0.218s;
}

.btn-signin:hover,
.btn-signin:active,
.btn-signin:focus {
    background-color: rgb(12, 97, 33);
}

.forgot-password {
    color: rgb(104, 145, 162);
}

.forgot-password:hover,
.forgot-password:active,
.forgot-password:focus{
    color: rgb(12, 97, 33);
}

button:disabled{

    background-color:gray !important;



For Check the form submit button invalid:

mainApp.directive('validateInvalid', function () {
    return {
        restrict: "A",
        link: function (scope, element, attrs) {

            if (scope.form == undefined)
                scope.form = {};

            element.addClass('ng-invalid');

            scope.form.enableSubmit = false;

            scope.$watch(function () {
                return element.attr('class');
            }, function (val) {
                var valid = true;
                var classes = val.split(" ");

                angular.forEach(classes, function (classname) {
                    if (classname == "ng-invalid") {
                        valid = false;
                    }                   
                });

                if (valid)
                    scope.form.enableSubmit = true;
                else
                    scope.form.enableSubmit = false;

            });
        }
    }

});

Output

OnLoad




After Validation



After Successful Login





From this Post you can learn how to create a reusable Lgin-form tag and use in many web application development and reduce time of developing the applications.