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                 uid            = 0,\r
  11                 timerId        = -1,\r
  12                 next           = 0,\r
  13                 INDEX_TIME     = 0,\r
  14                 INDEX_LAST     = 1,\r
  15                 INDEX_COUNT    = 2,\r
  16                 INDEX_CALLBACK = 3,\r
  17                 INDEX_UID      = 4;\r
  18         \r
  19         function loop(){\r
  20                 var 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 & X.Callback.UN_LISTEN || c === 1 ){\r
  31                                 list.splice( i, 1 );\r
  32                                 f.kill && 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                         l    = list.length,\r
  45                         n    = 99999999,\r
  46                         last;\r
  47                 if( l === 0 ){\r
  48                         timerId !== -1 && clearTimeout( timerId );\r
  49                         timerId = -1;\r
  50                         return;\r
  51                 };\r
  52             for( ; l; ){\r
  53                 ( last = list[ --l ][ INDEX_LAST ] ) < n && ( n = last );\r
  54             };\r
  55             if( n < next || timerId === -1 ){\r
  56                 timerId !== -1 && clearTimeout( timerId );\r
  57                 timerId = setTimeout( loop, INTERVAL_TIME * n );\r
  58                 next = n;\r
  59             };\r
  60         };\r
  61         \r
  62         var enterFrame =\r
  63                         window.requestAnimationFrame ||\r
  64                         window.webkitRequestAnimationFrame ||\r
  65                         window.mozRequestAnimationFrame ||\r
  66                         window.oRequestAnimationFrame ||\r
  67                         window.msRequestAnimationFrame ||\r
  68                         0,\r
  69                 cancelFrame =\r
  70                         window.cancelRequestAnimationFrame ||\r
  71                         window.webkitCancelAnimationFrame ||\r
  72                         window.webkitCancelRequestAnimationFrame ||\r
  73                         window.mozCancelRequestAnimationFrame ||\r
  74                         window.oCancelRequestAnimationFrame ||\r
  75                         window.msCancelRequestAnimationFrame ||\r
  76                         0,\r
  77                 REQUEST_FRAME_LIST = [],\r
  78                 requestID;\r
  79         \r
  80         function onEnterFrame( time ){\r
  81                 var list = REQUEST_FRAME_LIST,\r
  82                         i    = list.length,\r
  83                         f;\r
  84                 time = time || ( Date.now ? Date.now() : +new Date );\r
  85             for( ; i; ){\r
  86                 ( f = list[ --i ] )( time );\r
  87                 delete f.uid;\r
  88                 f.kill && f.kill();\r
  89             };\r
  90             list.length = 0;\r
  91         };\r
  92         \r
  93         return {\r
  94                 add : function( time, opt_count, args1, args2, args3 ){\r
  95                         time = time < INTERVAL_TIME ? 1 : ( time / INTERVAL_TIME ) | 0; // 正の数で使える「Math.floor(x)」を「(x | 0)」に;\r
  96 \r
  97                         if( typeof opt_count !== 'number' ){\r
  98                                 args3 = args2;\r
  99                                 args2 = args1;\r
 100                                 args1 = opt_count;\r
 101                                 opt_count = 0;\r
 102                         };\r
 103 \r
 104                         TICKET_LIST[ TICKET_LIST.length ] = [ time, time, opt_count, X.Callback.create( args1, args2, args3 ), ++uid ];\r
 105                     update();\r
 106                     return uid;\r
 107                 },\r
 108                 once : function( time, args1, args2, args3 ){\r
 109                         return X.Timer.add( time, 1, args1, args2, args3 );\r
 110                 },\r
 111                 remove : function( uid ){\r
 112                         var list = TICKET_LIST,\r
 113                                 i    = list.length,\r
 114                                 l    = i,\r
 115                                 f, q;\r
 116                         for( ; i; ){\r
 117                                 if( ( q = list[ --i ] )[ INDEX_UID ] === uid ){\r
 118                                         list.splice( i, 1 );\r
 119                                         f = q[ INDEX_CALLBACK ];\r
 120                                         f.kill && f.kill();\r
 121                                         ( /* q[ INDEX_COUNT ] <= next  || */ l === 1 ) && update();\r
 122                                         q.length = 0;\r
 123                                         break;\r
 124                                 };\r
 125                         };\r
 126                 },\r
 127                 \r
 128                 // string only ie4-\r
 129                 _loop : X.UA.IE && X.UA.IE < 5 && (function( r ){\r
 130                         loop = 'X.Timer._loop()';\r
 131                         return r;\r
 132                 })( loop ),\r
 133                 \r
 134                 requestFrame : function( args1, args2, args3 ){\r
 135                         var i = REQUEST_FRAME_LIST.length,\r
 136                                 f;\r
 137                         i === 0 && ( requestID = ( enterFrame ? enterFrame( onEnterFrame ) : X.Timer.add( 16, 1, onEnterFrame ) ) );\r
 138                         f = REQUEST_FRAME_LIST[ i ] = X.Callback.create( args1, args2, args3 );\r
 139                         return f.uid = ++uid;\r
 140                 },\r
 141                 cancelFrame : function( uid ){\r
 142                         var list = REQUEST_FRAME_LIST,\r
 143                                 l    = list.length,\r
 144                                 i    = l,\r
 145                                 f;\r
 146                         for( ; i; ){\r
 147                                 if( ( f = list[ --i ] ).uid < uid ) break;\r
 148                                 if( f.uid === uid ){\r
 149                                         list.splice( i, 1 );\r
 150                                         delete f.uid;\r
 151                                         f.kill && f.kill();\r
 152                                         l === 1 && ( cancelFrame ? cancelFrame( requestID ) : X.Timer.remove( requestID ) );\r
 153                                         break;\r
 154                                 };\r
 155                         };\r
 156                 }\r
 157         };\r
 158 })();