| 56 | |
| 57 | var wpThemes; |
| 58 | |
| 59 | (function($){ |
| 60 | var inputs = {}, Query; |
| 61 | |
| 62 | wpThemes = { |
| 63 | timeToTriggerQuery: 150, |
| 64 | minQueryAJAXDuration: 200, |
| 65 | outListBottomThreshold: 200, |
| 66 | noMoreResults: false, |
| 67 | |
| 68 | init : function() { |
| 69 | $('.pagination-links').hide(); |
| 70 | |
| 71 | inputs.nonce = $('#_ajax_fetch_list_nonce').val(); |
| 72 | |
| 73 | // Parse Query |
| 74 | inputs.queryString = window.location.search; |
| 75 | inputs.queryArray = wpThemes.parseQuery( inputs.queryString.substring( 1 ) ); |
| 76 | |
| 77 | // Handle Inputs from Query |
| 78 | inputs.search = inputs.queryArray['s']; |
| 79 | inputs.features = inputs.queryArray['features']; |
| 80 | inputs.startPage = parseInt( inputs.queryArray['paged'] ); |
| 81 | inputs.tab = inputs.queryArray['tab']; |
| 82 | inputs.type = inputs.queryArray['type']; |
| 83 | |
| 84 | if ( isNaN( inputs.startPage ) ) |
| 85 | inputs.startPage = 2; |
| 86 | else |
| 87 | inputs.startPage++; |
| 88 | |
| 89 | // Cache jQuery objects |
| 90 | inputs.outList = $('#availablethemes'); |
| 91 | inputs.waiting = $('div.tablenav.bottom').children( 'img.ajax-loading' ); |
| 92 | inputs.window = $(window); |
| 93 | |
| 94 | // Generate Query |
| 95 | wpThemes.query = new Query(); |
| 96 | |
| 97 | // Start Polling |
| 98 | inputs.window.scroll( function(){ wpThemes.maybeLoad(); } ); |
| 99 | }, |
| 100 | delayedCallback : function( func, delay ) { |
| 101 | var timeoutTriggered, funcTriggered, funcArgs, funcContext; |
| 102 | |
| 103 | if ( ! delay ) |
| 104 | return func; |
| 105 | |
| 106 | setTimeout( function() { |
| 107 | if ( funcTriggered ) |
| 108 | return func.apply( funcContext, funcArgs ); |
| 109 | // Otherwise, wait. |
| 110 | timeoutTriggered = true; |
| 111 | }, delay); |
| 112 | |
| 113 | return function() { |
| 114 | if ( timeoutTriggered ) |
| 115 | return func.apply( this, arguments ); |
| 116 | // Otherwise, wait. |
| 117 | funcArgs = arguments; |
| 118 | funcContext = this; |
| 119 | funcTriggered = true; |
| 120 | }; |
| 121 | }, |
| 122 | ajax: function( callback ) { |
| 123 | var self = this, |
| 124 | response = wpThemes.delayedCallback( function( results, params ) { |
| 125 | self.process( results, params ); |
| 126 | if ( callback ) |
| 127 | callback( results, params ); |
| 128 | }, wpThemes.minQueryAJAXDuration ); |
| 129 | |
| 130 | this.query.ajax( response ); |
| 131 | }, |
| 132 | process: function( results, params ) { |
| 133 | // If no Results, for now, mark as no Matches, and bail. |
| 134 | // Alternately: inputs.outList.append(wpThemesL10n.noMatchesFound); |
| 135 | if ( ( results === undefined ) || |
| 136 | ( results.rows.indexOf( "no-items" ) != -1 ) ) { |
| 137 | this.noMoreResults = true; |
| 138 | } else { |
| 139 | inputs.outList.append( results.rows ); |
| 140 | } |
| 141 | }, |
| 142 | maybeLoad: function() { |
| 143 | var self = this, |
| 144 | el = $(document), |
| 145 | bottom = el.scrollTop() + inputs.window.innerHeight(); |
| 146 | |
| 147 | if ( this.noMoreResults || |
| 148 | !this.query.ready() || |
| 149 | ( bottom < inputs.outList.height() - wpThemes.outListBottomThreshold ) ) |
| 150 | return; |
| 151 | |
| 152 | setTimeout( function() { |
| 153 | var newTop = el.scrollTop(), |
| 154 | newBottom = newTop + inputs.window.innerHeight(); |
| 155 | |
| 156 | if ( !self.query.ready() || |
| 157 | ( newBottom < inputs.outList.height() - wpThemes.outListBottomThreshold ) ) |
| 158 | return; |
| 159 | |
| 160 | inputs.waiting.css( 'visibility', 'visible' ); // Show Spinner |
| 161 | self.ajax( function() { inputs.waiting.css( 'visibility', 'hidden' ) } ); // Hide Spinner |
| 162 | |
| 163 | }, wpThemes.timeToTriggerQuery ); |
| 164 | }, |
| 165 | parseQuery: function( query ) { |
| 166 | var Params = {}; |
| 167 | if ( ! query ) {return Params;}// return empty object |
| 168 | var Pairs = query.split(/[;&]/); |
| 169 | for ( var i = 0; i < Pairs.length; i++ ) { |
| 170 | var KeyVal = Pairs[i].split('='); |
| 171 | if ( ! KeyVal || KeyVal.length != 2 ) {continue;} |
| 172 | var key = unescape( KeyVal[0] ); |
| 173 | var val = unescape( KeyVal[1] ); |
| 174 | val = val.replace(/\+/g, ' '); |
| 175 | key = key.replace(/\[.*\]$/g, ''); |
| 176 | |
| 177 | if ( Params[key] === undefined ) { |
| 178 | Params[key] = val; |
| 179 | } else { |
| 180 | var oldVal = Params[key]; |
| 181 | if ( ! jQuery.isArray( Params[key] ) ) |
| 182 | Params[key] = new Array( oldVal, val ); |
| 183 | else |
| 184 | Params[key].push( val ); |
| 185 | } |
| 186 | } |
| 187 | return Params; |
| 188 | } |
| 189 | } |
| 190 | |
| 191 | Query = function() { |
| 192 | this.failedRequest = false; |
| 193 | this.querying = false; |
| 194 | this.page = inputs.startPage; |
| 195 | } |
| 196 | |
| 197 | $.extend( Query.prototype, { |
| 198 | ready: function() { |
| 199 | return !( this.querying || this.failedRequest ); |
| 200 | }, |
| 201 | ajax: function( callback ) { |
| 202 | var self = this, |
| 203 | query = { |
| 204 | action: 'fetch-list', |
| 205 | tab: inputs.tab, |
| 206 | paged: this.page, |
| 207 | s: inputs.search, |
| 208 | type: inputs.type, |
| 209 | _ajax_fetch_list_nonce: inputs.nonce, |
| 210 | 'features[]': inputs.features, |
| 211 | 'list_args': list_args |
| 212 | }; |
| 213 | |
| 214 | this.querying = true; |
| 215 | $.get( ajaxurl, query, function(r) { |
| 216 | self.page++; |
| 217 | self.querying = false; |
| 218 | self.failedRequest = !r; |
| 219 | callback( r, query ); |
| 220 | }, "json" ); |
| 221 | } |
| 222 | }); |
| 223 | |
| 224 | $(document).ready( wpThemes.init ); |
| 225 | |
| 226 | })(jQuery); |