Saint Nicholas in CSS

Happy Saint Nicholas Day ! And special present for all CSS geeks: CSS Santa Example on jsfiddle can be found here (thanks to Piotr Przybylski)

html {
    height: 100%;
}
body {
    background-image: url('background.png');
    display: table;
    margin: 0;
    height: 100%;
    width: 100%;
    background-color: #eee;
}
.panelWrapper {
    display: table-cell;
    vertical-align: middle;
}

.face {
    background-color: #FFC4A7;
    border-radius: 60px 60px 60px 60px;
    height: 102px;
    left: 50px;
    position: absolute;
    top: 105px;
    width: 100px;
}

.santa {
    height: 300px;
    width: 200px;
    position: relative;
    margin: 50px auto 0;
    cursor: pointer;
}

.santa .hat {
    position: absolute;
    left: 50%;
    margin: 0 0 0 -50px;
    width: 0px;
    height: 0px;
    border-style: solid;
    border-width: 0 50px 110px 50px;
    border-color: transparent transparent #a40000 transparent;
    line-height: 0px;
    _border-color: #000000 #000000 #a40000 #000000;
    _filter: progid:DXImageTransform.Microsoft.Chroma(color='#000000'); 
}

.santa .hat:after {
    content: '';
    position: absolute;
    width: 0px;
    height: 0px;
    border-style: solid;
    border-width: 40px 0 0 100px;
    border-color: transparent transparent transparent #a40000;

    -webkit-transform: rotate(15deg);
    -webkit-transform-origin: top left;

    -moz-transform: rotate(15deg);
    -moz-transform-origin: top left;

    -ms-transform: rotate(15deg);
    -ms-transform-origin: top left;

    -o-transform: rotate(15deg);
    -o-transform-origin: top left;

    transform: rotate(15deg);
    transform-origin: top left;
}

.santa .hat:before {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    background: #fff;
    left: 75px;
    top: 55px;
    -webkit-border-radius: 50%;
    -moz-border-radius: 50%;
    border-radius: 50%;
    z-index: 1;
}

.santa .hatFur {
    background: none repeat scroll 0 0 #FFFFFF;
    border-radius: 50px 50px 50px 50px;
    box-shadow: 0 6px 2px -6px #000000;
    height: 24px;
    left: 50%;
    margin: 0 0 0 -55px;
    position: absolute;
    top: 100px;
    width: 110px;
}

.santa .eyeLeft {
    background: none repeat scroll 0 0 #FFFFFF;
    border-radius: 50% 50% 50% 50%;
    content: "";
    height: 16px;
    left: 65px;
    position: absolute;
    top: 135px;
    width: 20px;
}

.santa .eyeRight {
    background: none repeat scroll 0 0 #FFFFFF;
    border-radius: 50% 50% 50% 50%;
    content: "";
    height: 16px;
    position: absolute;
    right: 65px;
    top: 135px;
    width: 20px;
}

.eyeLeft:after, .eyeRight:after {
    background-color: #000099;
    border-radius: 5px 5px 5px 5px;
    content: "";
    height: 10px;
    left: 6px;
    opacity: 0.75;
    position: absolute;
    top: 4px;
    width: 10px;
}

.santa:hover .eyeLeft:after, .santa:hover .eyeRight:after {
    opacity: 0.05;
}

.santa:hover .eyeLeft, .santa:hover .eyeRight {
    background-color: #FFB391;
    border-bottom: 1px solid #FF7D55;
    height: 14px;
}

.santa .beard_left, .santa .beard_right {
    position: absolute;
    height: 120px;
    width: 60px;
    bottom: 0;
    left: 50%;
    margin: 0 0 0 -60px;
    overflow: hidden;
}

.santa .beard_right {
    margin: 0;
}

.santa .beard_left:after {
    content: '';
    position: absolute;
    background: white;
    width: 150px;
    height: 150px;
    -webkit-border-radius: 50%;
    -moz-border-radius: 50%;
    border-radius: 50%;
    bottom: 0px;
    left: 0;
}

.santa .beard_left:before {
    content: '';
    position: absolute;
    background-color: #FFC4A7;
    width: 73px;
    height: 50px;
    border-radius: 50%;
    top: -45px;
    left: 2px;
    z-index: 5;
}

.santa .beard_right:after {
    content: '';
    position: absolute;
    background-color: #FFC4A7;
    width: 73px;
    height: 50px;
    border-radius: 50%;
    top: -45px;
    right: 2px;
    z-index: 5;
}

.santa .beard_right:before {
    content: '';
    position: absolute;
    background: white;
    width: 150px;
    height: 150px;
    -webkit-border-radius: 50%;
    -moz-border-radius: 50%;
    border-radius: 50%;
    bottom: 0px;
    right: 0
}
.nose {
    background-color: #FFB391;
    border: 1px solid #FFB391;
    border-radius: 10px 10px 5px 5px;
    box-shadow: 0 3px 2px #666666;
    height: 20px;
    left: 93px;
    position: absolute;
    top: 162px;
    width: 15px;
    z-index: 100;
}

.mouth {
    background-color: #FFB391;
    border-radius: 0 0 15px 15px;
    height: 10px;
    left: 87px;
    position: absolute;
    top: 200px;
    width: 30px;
}

DDevelopment & Design

Simple trick to DRY your Grails controller

byTomasz Kalkosiński
June 5, 2013

Grails controllers are not very DRY. It's easy to find duplicated code fragments in default generated controller. Take a look at code sample below. It is duplicated four times in show, edit, update and delete actions:

class BookController {
def show() {
def bookInstance = Book.get(params.id)
if (!bookInstance) {
flash.message = message(code: 'default.not.found.message', args: [message(code: 'book.label', default: 'Book'), params.id])
redirect(action: "list")
return
        }
        [bookInstance: bookInstance]
    }
}

Why is it duplicated?

There is a reason for that duplication, though. If you move this snippet to a method, it can redirect to "list" action, but it can't prevent controller from further execution. After you call redirect, response status changes to 302, but after method exits, controller still runs subsequent code.

Solution

At TouK we've implemented a simple trick to resolve that situation:

wrap everything with a simple withStoppingOnRender method,
whenever you want to render or redirect AND stop controller execution - throw EndRenderingException.

We call it Big Return - return from a method and return from a controller at once. Here is how it works:

class BookController {
def show(Long id) {
withStoppingOnRender {
Book bookInstance = Book.get(id)
validateInstanceExists(bookInstance)
            [bookInstance: bookInstance]
        }
    }

protected Object withStoppingOnRender(Closure closure) {
try {
return closure.call()
        } catch (EndRenderingException e) {}
    }

private void validateInstanceExists(Book instance) {
if (!instance) {
flash.message = message(code: 'default.not.found.message', args: [message(code: 'book.label', default: 'Book'), params.id])
redirect(action: "list")
throw new EndRenderingException()
        }
    }
}

class EndRenderingException extends RuntimeException {}

Example usage

For simple CRUD controllers, you can use this solution and create some BaseController class for your controllers. We use withStoppingOnRender in every controller so code doesn't look like a spaghetti, we follow DRY principle and code is self-documented. Win-win-win! Here is a more complex example:

class DealerController {
@Transactional
def update() {
withStoppingOnRender {
Dealer dealerInstance = Dealer.get(params.id)
validateInstanceExists(dealerInstance)
validateAccountInExternalService(dealerInstance)
checkIfInstanceWasConcurrentlyModified(dealerInstance, params.version)
            dealerInstance.properties = params
saveUpdatedInstance(dealerInstance)
redirectToAfterUpdate(dealerInstance)
        }
    }
}

Saint Nicholas in CSS

Tags:

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Why is it duplicated?

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Saint Nicholas in CSS

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