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   1  /**
   2   * Handles the cookie used by several JavaScript functions
   3   *
   4   * Only a single cookie is written and read. You may only save
   5   * sime name-value pairs - no complex types!
   6   *
   7   * You should only use the getValue and setValue methods
   8   *
   9   * @author Andreas Gohr <andi@splitbrain.org>
  10   */
  11  DokuCookie = {
  12      data: Array(),
  13      name: 'DOKU_PREFS',
  14  
  15      /**
  16       * Save a value to the cookie
  17       *
  18       * @author Andreas Gohr <andi@splitbrain.org>
  19       */
  20      setValue: function(key,val){
  21          DokuCookie.init();
  22          DokuCookie.data[key] = val;
  23  
  24          // prepare expire date
  25          var now = new Date();
  26          DokuCookie.fixDate(now);
  27          now.setTime(now.getTime() + 365 * 24 * 60 * 60 * 1000); //expire in a year
  28  
  29          //save the whole data array
  30          var text = '';
  31          for(var key in DokuCookie.data){
  32              if (!DokuCookie.data.hasOwnProperty(key)) continue;
  33              text += '#'+escape(key)+'#'+DokuCookie.data[key];
  34          }
  35          DokuCookie.setCookie(DokuCookie.name,text.substr(1),now,DOKU_BASE);
  36      },
  37  
  38      /**
  39       * Get a Value from the Cookie
  40       *
  41       * @author Andreas Gohr <andi@splitbrain.org>
  42       */
  43      getValue: function(key){
  44          DokuCookie.init();
  45          return DokuCookie.data[key];
  46      },
  47  
  48      /**
  49       * Loads the current set cookie
  50       *
  51       * @author Andreas Gohr <andi@splitbrain.org>
  52       */
  53      init: function(){
  54          if(DokuCookie.data.length) return;
  55          var text  = DokuCookie.getCookie(DokuCookie.name);
  56          if(text){
  57              var parts = text.split('#');
  58              for(var i=0; i<parts.length; i+=2){
  59                  DokuCookie.data[unescape(parts[i])] = unescape(parts[i+1]);
  60              }
  61          }
  62      },
  63  
  64      /**
  65       * This sets a cookie by JavaScript
  66       *
  67       * @link http://www.webreference.com/js/column8/functions.html
  68       */
  69      setCookie: function(name, value, expires, path, domain, secure) {
  70          var curCookie = name + "=" + escape(value) +
  71              ((expires) ? "; expires=" + expires.toGMTString() : "") +
  72              ((path) ? "; path=" + path : "") +
  73              ((domain) ? "; domain=" + domain : "") +
  74              ((secure) ? "; secure" : "");
  75          document.cookie = curCookie;
  76      },
  77  
  78      /**
  79       * This reads a cookie by JavaScript
  80       *
  81       * @link http://www.webreference.com/js/column8/functions.html
  82       */
  83      getCookie: function(name) {
  84          var dc = document.cookie;
  85          var prefix = name + "=";
  86          var begin = dc.indexOf("; " + prefix);
  87          if (begin == -1) {
  88              begin = dc.indexOf(prefix);
  89              if (begin !== 0){ return null; }
  90          } else {
  91              begin += 2;
  92          }
  93          var end = document.cookie.indexOf(";", begin);
  94          if (end == -1){
  95              end = dc.length;
  96          }
  97          return unescape(dc.substring(begin + prefix.length, end));
  98      },
  99  
 100      /**
 101       * This is needed for the cookie functions
 102       *
 103       * @link http://www.webreference.com/js/column8/functions.html
 104       */
 105      fixDate: function(date) {
 106          var base = new Date(0);
 107          var skew = base.getTime();
 108          if (skew > 0){
 109              date.setTime(date.getTime() - skew);
 110          }
 111      }
 112  };