project/js/app.helpers.js

   1 /*jslint devel: true*/
   2 /*global $, jQuery */
   3
   4 /**
   5  * @class Helpers
   6  */
   7 function Helpers() {
   8         'use strict';
   9 }
  10
  11 (function () { // strict mode wrapper
  12         'use strict';
  13         Helpers.prototype = {
  14
  15                 extensions: {
  16                         '.bmp':       {mime:'image/*',            icon:'img.png'},
  17                         '.gif':       {mime:'image/*',            icon:'img.png'},
  18                         '.jpeg':      {mime:'image/*',            icon:'img.png'},
  19                         '.jpg':       {mime:'image/*',            icon:'img.png'},
  20                         '.png':       {mime:'image/*',            icon:'img.png'},
  21                         '.tiff':      {mime:'image/*',            icon:'img.png'},
  22                         '.3ga':       {mime:'audio/*',            icon:'music.png'},
  23                         '.aac':       {mime:'audio/*',            icon:'music.png'},
  24                         '.ac3':       {mime:'audio/*',            icon:'music.png'},
  25                         '.amr':       {mime:'audio/*',            icon:'music.png'},
  26                         '.awb':       {mime:'audio/*',            icon:'music.png'},
  27                         '.m4a':       {mime:'audio/*',            icon:'music.png'},
  28                         '.m4p':       {mime:'audio/*',            icon:'music.png'},
  29                         '.m4r':       {mime:'audio/*',            icon:'music.png'},
  30                         '.mp3':       {mime:'audio/*',            icon:'music.png'},
  31                         '.ogg':       {mime:'audio/*',            icon:'music.png'},
  32                         '.wav':       {mime:'audio/*',            icon:'music.png'},
  33                         '.wma':       {mime:'audio/*',            icon:'music.png'},
  34                         '.3gp':       {mime:'video/*',            icon:'video.png'},
  35                         '.avc':       {mime:'video/*',            icon:'video.png'},
  36                         '.avi':       {mime:'video/*',            icon:'video.png'},
  37                         '.m4v':       {mime:'video/*',            icon:'video.png'},
  38                         '.mkv':       {mime:'video/*',            icon:'video.png'},
  39                         '.mov':       {mime:'video/*',            icon:'video.png'},
  40                         '.mp4':       {mime:'video/*',            icon:'video.png'},
  41                         '.mpeg':      {mime:'video/*',            icon:'video.png'},
  42                         '.mpg':       {mime:'video/*',            icon:'video.png'},
  43                         '.ogv':       {mime:'video/*',            icon:'video.png'},
  44                         '.vc1':       {mime:'video/*',            icon:'video.png'},
  45                         '.wmv':       {mime:'video/*',            icon:'video.png'},
  46                         '.doc':       {mime:'',                   icon:'text.png'},
  47                         '.docx':      {mime:'',                   icon:'text.png'},
  48                         '.odt':       {mime:'',                   icon:'text.png'},
  49                         '.ods':       {mime:'',                   icon:'text.png'},
  50                         '.txt':       {mime:'',                   icon:'text.png'},
  51                         '.xls':       {mime:'',                   icon:'text.png'},
  52                         '.xlsx':      {mime:'',                   icon:'text.png'},
  53                         '.vcard':     {mime:'text/vcard',         icon:'text.png'},
  54                         '.vcf':       {mime:'text/vcard',         icon:'text.png'},
  55                         '.icalendar': {mime:'text/calendar',      icon:'text.png'},
  56                         '.ical':      {mime:'text/calendar',      icon:'text.png'},
  57                         '.ics':       {mime:'text/calendar',      icon:'text.png'},
  58                         '.ifb':       {mime:'text/calendar',      icon:'text.png'},
  59                         '.pdf':       {mime:'',                   icon:'pdf.png'},
  60                         '.odp':       {mime:'',                   icon:'ppt.png'},
  61                         '.ppt':       {mime:'',                   icon:'ppt.png'},
  62                         '.wgt':       {mime:'application/widget', icon:'etc.png'}
  63                 },
  64
  65                 /**
  66                  * Capitalise the first letter
  67                  *
  68                  * @param {string} text
  69                  * @returns {string}
  70                  */
  71                 UCFirst: function Helpers_UCFirst(text) {
  72                         return text.charAt(0).toUpperCase() + text.slice(1);
  73                 },
  74
  75                 /**
  76                  * @param {string} fileName
  77                  * @returns {string} file name without extension
  78                  */
  79                 getFileName: function Helpers_getFileName(fileName) {
  80                         var fileNameLen = fileName.indexOf('.');
  81                         if (fileNameLen !== -1) {
  82                                 fileName = fileName.slice(0, fileNameLen);
  83                         }
  84                         return fileName;
  85                 },
  86
  87                 /**
  88                  * @param {string} fileName
  89                  * @returns {string} extension for specified file name
  90                  */
  91                 getFileExtension: function Helpers_getFileExtension(fileName) {
  92                         var splittedFileName = fileName.split('.'),
  93                                 ext = '';
  94
  95                         if (splittedFileName.length > 1) {
  96                                 ext = '.' + splittedFileName.pop();
  97                         }
  98                         return ext;
  99                 },
 100
 101                 /**
 102                  * Return icon filename for the given extension.
 103                  * For example, for '.mp3' returns 'music.png'
 104                  *
 105                  * @param {string} ext
 106                  * @return {string}
 107                  */
 108                 resolveFileIcon: function Helpers_resolveFileIcon(ext) {
 109                         ext = ext.toLowerCase();
 110                         var info = this.extensions[ext];
 111                         return info ? info.icon : 'etc.png';
 112                 },
 113
 114                 /**
 115                  * Resolve file extension to MIME type
 116                  *
 117                  * @param {string} ext File extension
 118                  * @returns {string}
 119                  */
 120                 resolveMimeType: function Helpers_resolveMimeType(ext) {
 121                         ext = ext.toLowerCase();
 122                         var info = this.extensions[ext];
 123                         return info ? info.mime : '';
 124                 },
 125
 126                 /**
 127                  * Returns thumbnail URI for specified file
 128                  * @param {string} fileName
 129                  * @param {File} node
 130                  * @returns {string}
 131                  */
 132                 getThumbnailURI: function Helpers_getThumbnailURI(fileName, node) {
 133                         var ext = this.getFileExtension(fileName);
 134
 135                         if (!node.thumbnailURIs) {
 136                                 return  'images/' + this.resolveFileIcon(ext);
 137                         }
 138
 139                         if (node.thumbnailURIs[0] && $.inArray(ext, ['.mp4', '.jpg', '.png', '.gif'])) {
 140                                 return node.thumbnailURIs[0];
 141                         }
 142
 143                         return 'images/etc.png';
 144                 },
 145
 146                 /**
 147                  * File name automatic number increase for copy files
 148                  */
 149                 getCopyFileName: function (sourceName, filesList) {
 150                         var ext = this.getFileExtension(sourceName),
 151                                 fileName = this.getFileName(sourceName),
 152                                 copyFileName = sourceName,
 153                                 i = 1;
 154
 155                         while ($.inArray(copyFileName, filesList) !== -1) {
 156                                 i += 1;
 157                                 copyFileName = fileName + '(' + i + ')' + ext;
 158                         }
 159                         return copyFileName;
 160                 }
 161         };
 162 }());