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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              text += '#'+escape(key)+'#'+DokuCookie.data[key];
  33          }
  34          DokuCookie.setCookie(DokuCookie.name,text.substr(1),now,DOKU_BASE);
  35      },
  36  
  37      /**
  38       * Get a Value from the Cookie
  39       *
  40       * @author Andreas Gohr <andi@splitbrain.org>
  41       */
  42      getValue: function(key){
  43          DokuCookie.init();
  44          return DokuCookie.data[key];
  45      },
  46  
  47      /**
  48       * Loads the current set cookie
  49       *
  50       * @author Andreas Gohr <andi@splitbrain.org>
  51       */
  52      init: function(){
  53          if(DokuCookie.data.length) return;
  54          var text  = DokuCookie.getCookie(DokuCookie.name);
  55          if(text){
  56              var parts = text.split('#');
  57              for(var i=0; i<parts.length; i+=2){
  58                  DokuCookie.data[unescape(parts[i])] = unescape(parts[i+1]);
  59              }
  60          }
  61      },
  62  
  63      /**
  64       * This sets a cookie by JavaScript
  65       *
  66       * @link http://www.webreference.com/js/column8/functions.html
  67       */
  68      setCookie: function(name, value, expires, path, domain, secure) {
  69          var curCookie = name + "=" + escape(value) +
  70              ((expires) ? "; expires=" + expires.toGMTString() : "") +
  71              ((path) ? "; path=" + path : "") +
  72              ((domain) ? "; domain=" + domain : "") +
  73              ((secure) ? "; secure" : "");
  74          document.cookie = curCookie;
  75      },
  76  
  77      /**
  78       * This reads a cookie by JavaScript
  79       *
  80       * @link http://www.webreference.com/js/column8/functions.html
  81       */
  82      getCookie: function(name) {
  83          var dc = document.cookie;
  84          var prefix = name + "=";
  85          var begin = dc.indexOf("; " + prefix);
  86          if (begin == -1) {
  87              begin = dc.indexOf(prefix);
  88              if (begin !== 0){ return null; }
  89          } else {
  90              begin += 2;
  91          }
  92          var end = document.cookie.indexOf(";", begin);
  93          if (end == -1){
  94              end = dc.length;
  95          }
  96          return unescape(dc.substring(begin + prefix.length, end));
  97      },
  98  
  99      /**
 100       * This is needed for the cookie functions
 101       *
 102       * @link http://www.webreference.com/js/column8/functions.html
 103       */
 104      fixDate: function(date) {
 105          var base = new Date(0);
 106          var skew = base.getTime();
 107          if (skew > 0){
 108              date.setTime(date.getTime() - skew);
 109          }
 110      }
 111  };