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LazyLoad only visible cells #430

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LazyLoad only visible cells #430

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55 changes: 35 additions & 20 deletions dist/flickity.pkgd.js
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Original file line number Diff line number Diff line change
Expand Up @@ -11,20 +11,19 @@

/**
* Bridget makes jQuery widgets
* v2.0.0
* v2.0.1
* MIT license
*/

/* jshint browser: true, strict: true, undef: true, unused: true */

( function( window, factory ) {
'use strict';
/* globals define: false, module: false, require: false */

// universal module definition
/*jshint strict: false */ /* globals define, module, require */
if ( typeof define == 'function' && define.amd ) {
// AMD
define( 'jquery-bridget/jquery-bridget',[ 'jquery' ], function( jQuery ) {
factory( window, jQuery );
return factory( window, jQuery );
});
} else if ( typeof module == 'object' && module.exports ) {
// CommonJS
Expand Down Expand Up @@ -1228,6 +1227,13 @@ function Flickity( element, options ) {
return;
}
this.element = queryElement;
// do not initialize twice on same element
if ( this.element.flickityGUID ) {
var instance = instances[ this.element.flickityGUID ];
instance.option( options );
return instance;
}

// add jQuery
if ( jQuery ) {
this.$element = jQuery( this.element );
Expand Down Expand Up @@ -1844,7 +1850,9 @@ proto.getAdjacentCellElements = function( adjCount, index ) {
}

var cellElems = [];
for ( var i = index - adjCount; i <= index + adjCount ; i++ ) {
var min = this.options.cellAlign === 'left' ? index : index - adjCount;
var max = this.options.cellAlign === 'right' ? index : index + adjCount;
for ( var i = min; i <= max ; i++ ) {
var slideIndex = this.options.wrapAround ? utils.modulo( i, len ) : i;
var slide = this.slides[ slideIndex ];
if ( slide ) {
Expand Down Expand Up @@ -4045,7 +4053,7 @@ return Flickity;
});

/*!
* Flickity asNavFor v2.0.0
* Flickity asNavFor v2.0.1
* enable asNavFor for Flickity
*/

Expand All @@ -4059,26 +4067,22 @@ return Flickity;
define( 'flickity-as-nav-for/as-nav-for',[
'flickity/js/index',
'fizzy-ui-utils/utils'
], function( classie, Flickity, utils ) {
return factory( window, classie, Flickity, utils );
});
], factory );
} else if ( typeof module == 'object' && module.exports ) {
// CommonJS
module.exports = factory(
window,
require('flickity'),
require('fizzy-ui-utils')
);
} else {
// browser global
window.Flickity = factory(
window,
window.Flickity,
window.fizzyUIUtils
);
}

}( window, function factory( window, Flickity, utils ) {
}( window, function factory( Flickity, utils ) {



Expand Down Expand Up @@ -4124,35 +4128,46 @@ proto.setNavCompanion = function( elem ) {
// click
this.on( 'staticClick', this.onNavStaticClick );

this.navCompanionSelect();
this.navCompanionSelect( true );
};

proto.navCompanionSelect = function() {
proto.navCompanionSelect = function( isInstant ) {
if ( !this.navCompanion ) {
return;
}
// select slide that matches first cell of slide
var selectedCell = this.navCompanion.selectedCells[0];
var cellIndex = this.navCompanion.cells.indexOf( selectedCell );
this.selectCell( cellIndex );
var firstIndex = this.navCompanion.cells.indexOf( selectedCell );
var lastIndex = firstIndex + this.navCompanion.selectedCells.length - 1;
var selectIndex = Math.floor( lerp( firstIndex, lastIndex,
this.navCompanion.cellAlign ) );
this.selectCell( selectIndex, false, isInstant );
// set nav selected class
this.removeNavSelectedElements();
// stop if companion has more cells than this one
if ( cellIndex >= this.cells.length ) {
if ( selectIndex >= this.cells.length ) {
return;
}
this.navSelectedElements = this.slides[ this.selectedIndex ].getCellElements();

var selectedCells = this.cells.slice( firstIndex, lastIndex + 1 );
this.navSelectedElements = selectedCells.map( function( cell ) {
return cell.element;
});
this.changeNavSelectedClass('add');
};

function lerp( a, b, t ) {
return ( b - a ) * t + a;
}

proto.changeNavSelectedClass = function( method ) {
this.navSelectedElements.forEach( function( navElem ) {
navElem.classList[ method ]('is-nav-selected');
});
};

proto.activateAsNavFor = function() {
this.navCompanionSelect();
this.navCompanionSelect( true );
};

proto.removeNavSelectedElements = function() {
Expand Down
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