122 lines
2.7 KiB
JavaScript
122 lines
2.7 KiB
JavaScript
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/*!
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* Flickity hash v1.0.3
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* Enable hash navigation for Flickity
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*/
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/*jshint browser: true, undef: true, unused: true, strict: true*/
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( function( window, factory ) {
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// universal module definition
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/*jshint strict: false */ /*globals define, module, require */
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if ( typeof define == 'function' && define.amd ) {
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// AMD
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define( [
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'flickity/js/index',
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], factory );
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} else if ( typeof module == 'object' && module.exports ) {
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// CommonJS
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module.exports = factory(
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require('flickity')
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);
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} else {
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// browser global
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factory(
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window.Flickity
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);
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}
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}( window, function factory( Flickity ) {
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'use strict';
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Flickity.createMethods.push('_createHash');
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var proto = Flickity.prototype;
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proto._createHash = function() {
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if ( !this.options.hash ) {
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return;
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}
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this.connectedHashLinks = [];
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// hash link listener
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// use HTML5 history pushState to prevent page scroll jump
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this.onHashLinkClick = function( event ) {
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event.preventDefault();
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this.selectCell( event.currentTarget.hash );
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history.replaceState( null, '', event.currentTarget.hash );
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}.bind( this );
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// events
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this.on( 'activate', this.activateHash );
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this.on( 'deactivate', this.deactivateHash );
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};
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proto.activateHash = function() {
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this.on( 'change', this.onChangeHash );
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// overwrite initialIndex
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if ( this.options.initialIndex === undefined && location.hash ) {
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var cell = this.queryCell( location.hash );
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if ( cell ) {
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this.options.initialIndex = this.getCellSlideIndex( cell );
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}
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}
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this.connectHashLinks();
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};
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proto.deactivateHash = function() {
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this.off( 'change', this.onChangeHash );
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this.disconnectHashLinks();
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};
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proto.onChangeHash = function() {
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var id = this.selectedElement.id;
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if ( id ) {
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var url = '#' + id;
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history.replaceState( null, '', url );
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}
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};
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proto.connectHashLinks = function() {
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var links = document.querySelectorAll('a');
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for ( var i=0; i < links.length; i++ ) {
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this.connectHashLink( links[i] );
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}
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};
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// used to test if link is on same page
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var proxyLink = document.createElement('a');
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proto.connectHashLink = function( link ) {
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if ( !link.hash ) {
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return;
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}
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// check that link is for the same page
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proxyLink.href = link.href;
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if ( proxyLink.pathname != location.pathname ) {
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return;
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}
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var cell = this.queryCell( link.hash );
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if ( !cell ) {
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return;
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}
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link.addEventListener( 'click', this.onHashLinkClick );
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this.connectedHashLinks.push( link );
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};
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proto.disconnectHashLinks = function() {
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this.connectedHashLinks.forEach( function( link ) {
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link.removeEventListener( 'click', this.onHashLinkClick );
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}, this );
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this.connectedHashLinks = [];
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};
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// ----- ----- //
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return Flickity;
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}));
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