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Copy pathGifLinks.js
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Copy pathGifLinks.js
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167 lines (126 loc) · 3.79 KB
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var GifLinks = (function() {
'use strict';
var body;
var container;
/* -------------------------
/* UTILS
/* -------------------------*/
// Soft object augmentation
function extend( target, source ) {
for ( var key in source ) {
if ( !( key in target ) ) {
target[ key ] = source[ key ];
}
}
return target;
}
// Applys a dict of css properties to an element
function applyProperties( target, properties ) {
for( var key in properties ) {
target.style[ key ] = properties[ key ];
}
}
/* -------------------------
/* App
/* -------------------------*/
// Initialize
function init( elements, preload ) {
if ( elements.length ) {
// Loop and assign
for( var i = 0; i < elements.length; i++ ) {
if ( preload === true ) {
preloadAndTrack( elements[ i ] );
} else {
track( elements[ i ] );
}
}
} else {
if ( preload === true ) {
preloadAndTrack( elements );
} else {
track( elements );
}
}
}
// Start tracking after preload
function preloadAndTrack( element ) {
var awesomeGif = element.getAttribute( 'data-src' );
if ( awesomeGif ) {
// Load the image
var img = new Image();
img. {
element.className += ' preloaded'
track( element )
}
img.src = awesomeGif;
}
}
// Start tracking mouse hovers
function track( element ) {
// "Party on Wayne" ~ "Party on Garth"
element.addEventListener( 'mouseover', function() { startPartying( this ); }, false );
element.addEventListener( 'touchstart', function() { startPartying( this ); }, false);
// Someone called the cops.
element.addEventListener( 'mouseout', function() { stopPartying(); }, false);
element.addEventListener( 'touchmove', function( event ) { event.preventDefault(); stopPartying(); }, false);
element.addEventListener( 'click', function() { stopPartying(); }, false);
element.addEventListener( 'dblclick', function() { stopPartying(); }, false);
addClasses( element );
}
// Adds classes to do with giflink status (has link etc)
function addClasses( element ) {
element.className += ' giflink ready';
if ( element.href ) {
element.className += ' has-link';
} else {
element.className += ' no-link';
}
}
// Create and cache the gif container.
function createContainer() {
var containerProperties = {
'backgroundPosition': '50% 50%',
'backgroundSize': 'cover',
'pointerEvents': 'none',
'position': 'fixed',
'zIndex': '999999',
'display': 'none',
'height': '100%',
'width': '100%',
'margin': '0px',
'left': '0px',
'top': '0px'
}
container = document.createElement( 'div' );
applyProperties( container, containerProperties );
body.appendChild( container );
}
// Add the background to the container, and the container to the page!
function startPartying( element ) {
var awesomeGif = element.getAttribute( 'data-src' );
if( awesomeGif ) {
container.style[ 'backgroundImage' ] = 'url(' + awesomeGif + ')';
container.style[ 'display' ] = 'block';
} else {
console.log( "Sorry, an element doesn't have a data-src!" );
}
}
// Hide the container
function stopPartying() {
container.style[ 'display' ] = 'none';
container.style[ 'backgroundImage' ] = '';
}
function main( elements, options ) {
// Caching
body = document.body;
createContainer();
var preload = false;
if ( options && options.preload ) {
preload = !!options.preload;
}
// Initialize giflinks
init( elements, preload );
}
return extend( main, {
});
})();