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                         i    = list.length,\r
  23                         queue, f, ret;\r
  24             for( ; i; ){\r
  25                 queue = list[ --i ];\r
  26                         if( 0 < ( queue[ INDEX_LAST ] -= c ) ) continue;\r
  27                         f   = queue[ INDEX_CALLBACK ];\r
  28                         c   = queue[ INDEX_COUNT ];\r
  29                         ret = f();\r
  30                         if( ret === false || ret === X.Cancel.UN_LISTEN || c === 1 ){\r
  31                                 list.splice( i, 1 );\r
  32                                 f.kill();\r
  33                                 queue.length = 0;\r
  34                                 continue;\r
  35                         } else\r
  36                         if( 1 < c ) --queue[ INDEX_COUNT ];\r
  37                         queue[ INDEX_LAST ] = queue[ INDEX_TIME ];\r
  38             };\r
  39             timerId = -1;\r
  40             update();\r
  41         };\r
  42         function update(){\r
  43                 var list = TICKET_LIST,\r
  44                         i    = list.length,\r
  45                         n    = 99999999,\r
  46                         last;\r
  47                 if( i === 0 ){\r
  48                         timerId !== -1 && clearTimeout( timerId );\r
  49                         timerId = -1;\r
  50                         return;\r
  51                 };\r
  52             for( ; i; ){\r
  53                 last = list[ --i ][ INDEX_LAST ];\r
  54                 if( last < n ) n = last;\r
  55             };\r
  56             if( n < next || timerId === -1 ){\r
  57                 timerId !== -1 && clearTimeout( timerId );\r
  58                 timerId = setTimeout( loop, INTERVAL_TIME * n );\r
  59                 next = n;\r
  60             };\r
  61         };\r
  62         \r
  63         return {\r
  64                 add : function( time, opt_count, args1, args2, args3 ){\r
  65                         time = time < INTERVAL_TIME ? 1 : ( time / INTERVAL_TIME ) | 0; // 正の数で使える「Math.floor(x)」を「(x | 0)」に;\r
  66 \r
  67                         if( typeof opt_count !== 'number' ){\r
  68                                 args3 = args2;\r
  69                                 args2 = args1;\r
  70                                 args1 = opt_count;\r
  71                                 opt_count = 0;\r
  72                         };\r
  73 \r
  74                         TICKET_LIST[ TICKET_LIST.length ] = [ time, time, opt_count, X.Callback.create( args1, args2, args3 ) ];\r
  75                     update();\r
  76                 },\r
  77                 once : function( time, args1, args2, args3 ){\r
  78                         X.Timer.add( time, 1, args1, args2, args3 );\r
  79                 },\r
  80                 remove : function( args1, args2 ){\r
  81                         var queue,\r
  82                                 i    = 0,\r
  83                                 list = TICKET_LIST;\r
  84                         if( !callback ) return;\r
  85                         while( queue = list[ i ] ){\r
  86                                 if( queue[ INDEX_CALLBACK ].same( args1, args2 ) === true ){\r
  87                                         callback.kill();\r
  88                                         list.splice( i, 1 );\r
  89                                         break;\r
  90                                 } else {\r
  91                                         ++i;\r
  92                                 };\r
  93                         };\r
  94                     update();\r
  95                 }\r
  96         };\r
  97 })();