0.6.x/js/core/05_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                 clearTimeout   = window.clearTimeout,\r
   8                 INTERVAL_TIME  = 16,\r
   9                 TICKET_LIST    = [],\r
  10                 timerId        = -1,\r
  11                 next           = 0,\r
  12                 INDEX_TIME     = 0,\r
  13                 INDEX_LAST     = 1,\r
  14                 INDEX_COUNT    = 2,\r
  15                 INDEX_CALLBACK = 3;\r
  16         \r
  17         function loop(){\r
  18                 var c    = next,\r
  19                         list = TICKET_LIST,\r
  20                         i    = list.length,\r
  21                         queue, f, ret;\r
  22             for( ; i; ){\r
  23                 queue = list[ --i ];\r
  24                         if( 0 < ( queue[ INDEX_LAST ] -= c ) ) continue;\r
  25                         f   = queue[ INDEX_CALLBACK ];\r
  26                         c   = queue[ INDEX_COUNT ];\r
  27                         ret = f();\r
  28                         if( ret === false || ret & X.Callback.UN_LISTEN || c === 1 ){\r
  29                                 list.splice( i, 1 );\r
  30                                 f.kill();\r
  31                                 queue.length = 0;\r
  32                                 continue;\r
  33                         } else\r
  34                         if( 1 < c ) --queue[ INDEX_COUNT ];\r
  35                         queue[ INDEX_LAST ] = queue[ INDEX_TIME ];\r
  36             };\r
  37             timerId = -1;\r
  38             update();\r
  39         };\r
  40         function update(){\r
  41                 var list = TICKET_LIST,\r
  42                         i    = list.length,\r
  43                         n    = 99999999,\r
  44                         last;\r
  45                 if( i === 0 ){\r
  46                         timerId !== -1 && clearTimeout( timerId );\r
  47                         timerId = -1;\r
  48                         return;\r
  49                 };\r
  50             for( ; i; ){\r
  51                 last = list[ --i ][ INDEX_LAST ];\r
  52                 if( last < n ) n = last;\r
  53             };\r
  54             if( n < next || timerId === -1 ){\r
  55                 timerId !== -1 && clearTimeout( timerId );\r
  56                 timerId = setTimeout( loop, INTERVAL_TIME * n );\r
  57                 next = n;\r
  58             };\r
  59         };\r
  60         \r
  61         return {\r
  62                 add : function( time, opt_count, args1, args2, args3 ){\r
  63                         time = time < INTERVAL_TIME ? 1 : ( time / INTERVAL_TIME ) | 0; // 正の数で使える「Math.floor(x)」を「(x | 0)」に;\r
  64 \r
  65                         if( typeof opt_count !== 'number' ){\r
  66                                 args3 = args2;\r
  67                                 args2 = args1;\r
  68                                 args1 = opt_count;\r
  69                                 opt_count = 0;\r
  70                         };\r
  71 \r
  72                         TICKET_LIST[ TICKET_LIST.length ] = [ time, time, opt_count, X.Callback.create( args1, args2, args3 ) ];\r
  73                     update();\r
  74                 },\r
  75                 once : function( time, args1, args2, args3 ){\r
  76                         X.Timer.add( time, 1, args1, args2, args3 );\r
  77                 },\r
  78                 remove : function( args1, args2 ){\r
  79                         var queue,\r
  80                                 i    = 0,\r
  81                                 list = TICKET_LIST;\r
  82                         if( !callback ) return;\r
  83                         while( queue = list[ i ] ){\r
  84                                 if( queue[ INDEX_CALLBACK ].same( args1, args2 ) === true ){\r
  85                                         callback.kill();\r
  86                                         list.splice( i, 1 );\r
  87                                         break;\r
  88                                 } else {\r
  89                                         ++i;\r
  90                                 };\r
  91                         };\r
  92                     update();\r
  93                 }\r
  94         };\r
  95 })();