0.6.x/js/core/06_XTimer.js

   1 /**\r
   2  * use X.Callback\r
   3  */\r
   4 \r
   5 X.Timer = ( function(){\r
   6         var setTimeout     = window.setTimeout;\r
   7         var clearTimeout   = window.clearTimeout;\r
   8         var INTERVAL_TIME  = 16;\r
   9         var TICKET_LIST    = [];\r
  10         var timerId        = -1;\r
  11         var next           = 0;\r
  12         /* const */\r
  13         var INDEX_TIME     = 0,\r
  14                 INDEX_LAST     = 1,\r
  15                 INDEX_COUNT    = 2,\r
  16                 INDEX_CALLBACK = 3;\r
  17         \r
  18         function loop(){\r
  19                 var i    = 0,\r
  20                         c    = next,\r
  21                         list = TICKET_LIST,\r
  22                         queue, callback;\r
  23             for( ; i < list.length; ){\r
  24                 queue = list[ i ];\r
  25                         if( 0 < ( queue[ INDEX_LAST ] -= c ) ){\r
  26                                 ++i;\r
  27                                 continue;\r
  28                         };\r
  29                         callback = queue[ INDEX_CALLBACK ];\r
  30                         c        = queue[ INDEX_COUNT ];\r
  31                         if( callback() === false || c === 1 ){\r
  32                                 list.splice( i, 1 );\r
  33                                 callback.kill();\r
  34                                 queue.length = 0;\r
  35                                 continue;\r
  36                         } else\r
  37                         if( 1 < c ){\r
  38                                 --queue[ INDEX_COUNT ];\r
  39                         };\r
  40                         ++i;\r
  41                         queue[ INDEX_LAST ] = queue[ INDEX_TIME ];\r
  42             };\r
  43             timerId = -1;\r
  44             update();\r
  45         };\r
  46         function update(){\r
  47                 var list = TICKET_LIST,\r
  48                         l    = list.length,\r
  49                         n    = 99999999,\r
  50                         last;\r
  51                 if( l === 0 ){\r
  52                         timerId !== -1 && clearTimeout( timerId );\r
  53                         timerId = -1;\r
  54                         return;\r
  55                 };\r
  56             for( ; l; ){\r
  57                 last = list[ --l ][ INDEX_LAST ];\r
  58                 if( last < n ) n = last;\r
  59             };\r
  60             if( n < next || timerId === -1 ){\r
  61                 timerId !== -1 && clearTimeout( timerId );\r
  62                 timerId = setTimeout( loop, INTERVAL_TIME * n );\r
  63                 next = n;\r
  64             };\r
  65         };\r
  66         \r
  67         return {\r
  68                 add : function( time, count, args1, args2, args3 ){\r
  69                         if( time < INTERVAL_TIME ) time = INTERVAL_TIME;\r
  70                         time = Math.floor( time / INTERVAL_TIME );\r
  71                         var callback,\r
  72                                 list     = TICKET_LIST,\r
  73                                 l        = list.length,\r
  74                                 i        = l,\r
  75                                 queue, args;\r
  76                         if( typeof count !== 'number' || count < 0 ){\r
  77                                 count = 0;\r
  78                         };\r
  79                         /*\r
  80                         for( ; i; ){\r
  81                                 queue = list[ --i ];\r
  82                                 if( queue[ INDEX_CALLBACK ].same( args1, args2 ) === true ){\r
  83                                         queue[ INDEX_TIME  ] = queue[ INDEX_LAST ] = time;\r
  84                                         queue[ INDEX_COUNT ] = count;\r
  85                                         update();\r
  86                                         return;\r
  87                                 };\r
  88                         }; */           \r
  89 \r
  90                         list[ l ] = [ time, time, count, X.Callback.create( args1, args2, args3 ) ];\r
  91                     update();\r
  92                 },\r
  93                 once : function( time, args1, args2, args3 ){\r
  94                         X.Timer.add( time, 1, args1, args2, args3 );\r
  95                 },\r
  96                 remove : function( args1, args2 ){\r
  97                         var queue,\r
  98                                 i    = 0,\r
  99                                 list = TICKET_LIST;\r
 100                         if( !callback ) return;\r
 101                         while( queue = list[ i ] ){\r
 102                                 if( queue[ INDEX_CALLBACK ].same( args1, args2 ) === true ){\r
 103                                         callback.kill();\r
 104                                         list.splice( i, 1 );\r
 105                                         break;\r
 106                                 } else {\r
 107                                         ++i;\r
 108                                 };\r
 109                         };\r
 110                     update();\r
 111                 }\r
 112         };\r
 113 })();