Categories
Insights

IT Modernization for Enterprises: Platform + Services approach

Enterprise IT has always faced the pressure of having to do more with a smaller budget and fewer resources. This trend continues in 2018. The only areas where there is room for budget are in refreshing technology, getting rid of legacy systems, strategic outsourcing, and leveraging cloud infrastructure for application deployment. In this article, we will first break down the different layers of legacy system modernization within an enterprise. We will then look at how using a good platform coupled with strategic outsourcing services is the right approach for mitigating risks in modernization projects.

There are broadly three “layers” of legacy systems modernization within an enterprise. In this article, we focus deeply on the first two. The first layer consists of legacy applications that need to be refreshed or rebuilt on a new stack . This is where enterprise IT is spending the majority of their time: in moving legacy stacks and legacy architecture to an open standard, microservices-based architecture. This helps in the deployment of responsive (multi-channel) apps that are easier to maintain and adaptive to changing business needs.

The second layer that is getting modernized revolves around DevOps. Enterprises are looking for ways to go from slow manual release cycles with lots of “spaghetti” scripts to a rapid, error-free containerized delivery of applications. Gartner predicts that, by 2020, more than 50% of global organizations will be running containerized applications in production, up from less than 20% today. The benefits of DevOps automation are: faster go-live apps; no need for IT reskilling; and instant setup and launch across testing, staging, and production environments.

“Infrastructure” modernization is the third stage. This is about moving compute and storage from existing corporate data centers to private and public clouds (or hybrid, multi-clouds). The shift to public clouds like AWS, Azure, and GCP are ongoing for severals years now (84% of IT managers surveyed use public cloud infrastructure today). This trend should continue strong in the coming years.

WaveMaker Platform

For application and DevOps modernization, WaveMaker offers an integrated platform. With WaveMaker Rapid, you can visually build an application by dragging-and-dropping pre-built components. Alongside, you can fully leverage open-source standards in the generated code and integrate with enterprise assets like databases, security, and web services. With WaveMaker Hyscale, you can containerize your application (Docker under the hood), configure resources, continuously deploy to multiple environments, and finally measure and track all your application versions.

WaveMaker Services

What is holding back enterprise IT today? Mainly, the risk of failure associated with a major modernization effort. This arises mostly because of quickly changing well-established systems of records, business logic, and database that have been around for many years. A better approach to modernization involves careful consideration of existing systems and then re-using or refactoring many of their aspects in the modern system. You can take a “wrap-and-build” approach or “refactor-and-rebuild” approach for modernization. Strategic outsourcing with WaveMaker Services can help you pick the right approach based on your business needs. This not only mitigates the risk of failure but also reduces any disruption to your existing business.

WaveMaker Platform + Services

WaveMaker brings a powerful Platform + Services approach to modernization. Many enterprise IT fails to tackle modernization with just a pure-play outsourcing approach. WaveMaker’s strategy for modernization fully leverages the platform for building business apps, integration with existing systems, componentized development, code-generation, API-creation, microservices, and container-based delivery. WaveMaker strategic outsourcing services leverages this platform and offers customization and business logic changes. This Platform + Services approach by WaveMaker provides an agile approach to modernization with re-use, refactor, and rebuild strategies combined together.

Categories
Enterprise Application Development

Implementing Swipe Gestures for WaveMaker Widgets

OVERVIEW & PURPOSE

When you are building a web responsive or mobile app, the components used in your app could respond to gestures and render their states accordingly. For example, if you use tabs in your app, on swipe left  from one tab you could allow the user to navigate to the subsequent tab. To implement this functionality, as a developer you need to integrate the touch events and based upon the swipe direction, distance and speed, you would write the rendering logic for the component.

In an endeavour to providing a native gesture experience in your hybrid mobile apps, WaveMaker has come up with a framework for integrating gestures with HTML5/JS components. The gesture-based interactions for widgets can be easily built as a layer on top of the existing component by using this framework.

In this article we will give an overview of this framework and how it can be applied to a WaveMaker widget – Carousel.

SWIPEY Plugin

Swipey is a jQuery plugin for swipe gestures. The plugin can be included in any project and swipe can be applied on any element. This plugin exposes a swipey method to add swipe functionality on the element. The swipey method accepts an object as shown below:

$ele.swipey({
   'direction': $.fn.swipey.DIRECTIONS.HORIZONTAL,
   'threshold': 5,
   'onSwipeStart': function () {},
   'onSwipe': function () {},
   'onSwipeEnd': function () {},
}];

Once the finger touch is moved beyond the threshold value, touch event is recognised as a swipe event and swipeStart is triggered. When the finger touch leaves the screen it is recognised as end of swipe triggering the swipEnd.

To add swipe functionality, invoke swipeAnimation() on the jQuery element. This method accepts an object, with each property defined for specific purpose such as bounds, context used for animation etc.

$ele.swipeAnimation({
   'threshold': 5,
   'bounds': function () {},
   'context': function () {},
   'animation': {},
   'onLower': function () {},
   'onUpper': function () {},
}];

Element can be swiped between the upper or lower positions from the center. These positions are called as bounds. Lower bound is the relative distance the element can be moved from the its current position (i.e. center) in the left or lower direction. Similarly, Upper bound is also the relative distance the element can be moved from the its current position. (i.e. center) towards the right or upper direction. Through the Swipey plugin we can specify animation for multiple target elements, by having an array of objects passed to animation property.

SWIPEY with Carousel Component

Let us use Swipey to build Carousel component. Carousel with set of images can be swiped to animate to next or previous carousel content.

The active carousel that is on the screen is at center: 0, whereas the previous carousel content is at left: -100% (left item) and next carousel content is at 100% (right item). On swipe, these three carousel content areas have to be translated using CSS transform. Hence, animation applied on the elements will be:

'animation': [{
   'target': function() {
         //To return the carousel content elements
   },
   'css': {
       'transform': 'translate3d(${{ (($D + $d) / w) * 100 + \'%\'}}, 0, 0)'
   }
}]

Where the function() returns the jQuery element having three carousel contents, as the CSS animation has to be applied on all the three carousel content areas.

In the above snippet, CSS property in animation is using “w”, “$D”, “$d” where w is the width of a single carousel content. $D, $d are the values which determine the current position and distance moved from the center, computed by the plugin and can be used during animation.

'context': function () {
   return {
       'w': state.width
   };
}

Setting the bounds for Carousel:

1. Let us consider the Carousel at centre position 0 i.e center: 0

wavemaker widgets

2. It can be either moved towards right or left with a distance equivalent to Carousel’s width in order to navigate to previous or next item as shown in the figure.

Implementing Swipe gestures

3. Current Carousel item has to be swiped to distance equivalent to width i.e. from left to right to navigate to previous content. Hence current position is centre i.e. center: 0 and this can be swiped till upper value (i.e. width) so upper bound value is width.

swipe gestures for wavemaker widgets

4. Similarly, Carousel can be swiped from right to left to navigate to next carousel item. Hence to navigate to next carousel item, carousel item can be moved from the center to lower value with distance equivalent to its width in the negative scale. Lower bound value is -width.

implementing swipe gestures

5. Hence, bounds for the carousel item can be written as

 {
“lower” : -width,
“center”: 0,
“upper”: width
                }

'bounds': function () {
   var items = this.find('.app-carousel-item');

    if (!state.width) {
       state.width = items.width();
   }

   // bounds: element can be swiped up to its width.
   return {
       'lower': -state.width,
       'center' : 0,
       'upper': state.width
   };
}

Callbacks when lower or upper bound is reached

These can be used to define the behavior of the Carousel when the bounds are reached.

 'onLower': function () {
       //Lower bound is reached
   },
   'onUpper': function () {
       //Upper bound is reached
   }

Conclusion

Thus, without having to modify the underlying component swipe gestures can be applied using the Swipey animation framework. This can be extended to widgets like Carousel, Tabs, List etc.