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// page dots
( function( window, factory ) {
// universal module definition
/* jshint strict: false */
if ( typeof define == 'function' && define.amd ) {
// AMD
define( [
'./flickity',
'tap-listener/tap-listener',
'fizzy-ui-utils/utils'
], function( Flickity, TapListener, utils ) {
return factory( window, Flickity, TapListener, utils );
});
} else if ( typeof module == 'object' && module.exports ) {
// CommonJS
module.exports = factory(
window,
require('./flickity'),
require('tap-listener'),
require('fizzy-ui-utils')
);
} else {
// browser global
factory(
window,
window.Flickity,
window.TapListener,
window.fizzyUIUtils
);
}
}( window, function factory( window, Flickity, TapListener, utils ) {
// -------------------------- PageDots -------------------------- //
'use strict';
function PageDots( parent ) {
this.parent = parent;
this._create();
}
PageDots.prototype = new TapListener();
PageDots.prototype._create = function() {
// create holder element
this.holder = document.createElement('ol');
this.holder.className = 'flickity-page-dots';
// create dots, array of elements
this.dots = [];
// events
this.on( 'tap', this.onTap );
this.on( 'pointerDown', this.parent.childUIPointerDown.bind( this.parent ) );
};
PageDots.prototype.activate = function() {
this.setDots();
this.bindTap( this.holder );
// add to DOM
this.parent.element.appendChild( this.holder );
};
PageDots.prototype.deactivate = function() {
// remove from DOM
this.parent.element.removeChild( this.holder );
TapListener.prototype.destroy.call( this );
};
PageDots.prototype.setDots = function() {
// get difference between number of slides and number of dots
var delta = this.parent.slides.length - this.dots.length;
if ( delta > 0 ) {
this.addDots( delta );
} else if ( delta < 0 ) {
this.removeDots( -delta );
}
};
PageDots.prototype.addDots = function( count ) {
var fragment = document.createDocumentFragment();
var newDots = [];
while ( count ) {
var dot = document.createElement('li');
dot.className = 'dot';
fragment.appendChild( dot );
newDots.push( dot );
count--;
}
this.holder.appendChild( fragment );
this.dots = this.dots.concat( newDots );
};
PageDots.prototype.removeDots = function( count ) {
// remove from this.dots collection
var removeDots = this.dots.splice( this.dots.length - count, count );
// remove from DOM
removeDots.forEach( function( dot ) {
this.holder.removeChild( dot );
}, this );
};
PageDots.prototype.updateSelected = function() {
// remove selected class on previous
if ( this.selectedDot ) {
this.selectedDot.className = 'dot';
}
// don't proceed if no dots
if ( !this.dots.length ) {
return;
}
this.selectedDot = this.dots[ this.parent.selectedIndex ];
this.selectedDot.className = 'dot is-selected';
};
PageDots.prototype.onTap = function( event ) {
var target = event.target;
// only care about dot clicks
if ( target.nodeName != 'LI' ) {
return;
}
this.parent.uiChange();
var index = this.dots.indexOf( target );
this.parent.select( index );
};
PageDots.prototype.destroy = function() {
this.deactivate();
};
Flickity.PageDots = PageDots;
// -------------------------- Flickity -------------------------- //
utils.extend( Flickity.defaults, {
pageDots: true
});
Flickity.createMethods.push('_createPageDots');
var proto = Flickity.prototype;
proto._createPageDots = function() {
if ( !this.options.pageDots ) {
return;
}
this.pageDots = new PageDots( this );
// events
this.on( 'activate', this.activatePageDots );
this.on( 'select', this.updateSelectedPageDots );
this.on( 'cellChange', this.updatePageDots );
this.on( 'resize', this.updatePageDots );
this.on( 'deactivate', this.deactivatePageDots );
};
proto.activatePageDots = function() {
this.pageDots.activate();
};
proto.updateSelectedPageDots = function() {
this.pageDots.updateSelected();
};
proto.updatePageDots = function() {
this.pageDots.setDots();
};
proto.deactivatePageDots = function() {
this.pageDots.deactivate();
};
// ----- ----- //
Flickity.PageDots = PageDots;
return Flickity;
}));
|
