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        = 0,\r
  12                 endTime        = 0,\r
  13                 next           = 0,\r
  14                 INDEX_TIME     = 0,\r
  15                 INDEX_LAST     = 1,\r
  16                 INDEX_COUNT    = 2,\r
  17                 INDEX_CALLBACK = 3,\r
  18                 INDEX_UID      = 4;\r
  19         \r
  20         function loop(){\r
  21                 var c    = next,\r
  22                         list = TICKET_LIST,\r
  23                         i    = list.length,\r
  24                         queue, f, ret;\r
  25             for( ; i; ){\r
  26                 queue = list[ --i ];\r
  27                         if( 0 < ( queue[ INDEX_LAST ] -= c ) ) continue;\r
  28                         f   = queue[ INDEX_CALLBACK ];\r
  29                         c   = queue[ INDEX_COUNT ];\r
  30                         ret = f();\r
  31                         if( ret & X.Callback.UN_LISTEN || c === 1 ){\r
  32                                 list.splice( i, 1 );\r
  33                                 f.kill && f.kill();\r
  34                                 queue.length = 0;\r
  35                                 continue;\r
  36                         } else\r
  37                         if( 1 < c ) --queue[ INDEX_COUNT ];\r
  38                         queue[ INDEX_LAST ] = queue[ INDEX_TIME ];\r
  39             };\r
  40             timerId = 0;\r
  41             update();\r
  42         };\r
  43         function update(){\r
  44                 var list = TICKET_LIST,\r
  45                         l    = list.length,\r
  46                         n    = 99999999,\r
  47                         last;\r
  48                 if( l === 0 ){\r
  49                         timerId !== -1 && clearTimeout( timerId );\r
  50                         timerId = 0;\r
  51                         return;\r
  52                 };\r
  53             for( ; l; ){\r
  54                 ( last = list[ --l ][ INDEX_LAST ] ) < n && ( n = last );\r
  55             };\r
  56             if( n < next || timerId === 0 ){\r
  57                 timerId !== 0 && clearTimeout( timerId );\r
  58                 timerId   = setTimeout( loop, INTERVAL_TIME * n );\r
  59                 endTime   = X.getTime() + INTERVAL_TIME * n;\r
  60                 next = n;\r
  61             };\r
  62         };\r
  63         \r
  64         // http://havelog.ayumusato.com/develop/javascript/e528-ios6_scrolling_timer_notcall.html\r
  65         // iOS6 スクロール中のタイマー発火絡みのバグ備忘\r
  66         if( X.UA.iOS ){\r
  67                  window.addEventListener( 'scroll', function(){\r
  68                         if( timerId ){\r
  69                                 clearTimeout( timerId );\r
  70                                 timerId = setTimeout( loop, Math.max( 0, endTime - X.getTime() ) );\r
  71                         };\r
  72                  } );\r
  73         };\r
  74         \r
  75         var enterFrame =\r
  76                         window.requestAnimationFrame ||\r
  77                         window.webkitRequestAnimationFrame ||\r
  78                         window.mozRequestAnimationFrame ||\r
  79                         window.oRequestAnimationFrame ||\r
  80                         window.msRequestAnimationFrame ||\r
  81                         0,\r
  82                 cancelFrame =\r
  83                         window.cancelRequestAnimationFrame ||\r
  84                         window.webkitCancelAnimationFrame ||\r
  85                         window.webkitCancelRequestAnimationFrame ||\r
  86                         window.mozCancelRequestAnimationFrame ||\r
  87                         window.oCancelRequestAnimationFrame ||\r
  88                         window.msCancelRequestAnimationFrame ||\r
  89                         0,\r
  90                 REQUEST_FRAME_LIST = [],\r
  91                 requestID;\r
  92         \r
  93         function onEnterFrame( time ){\r
  94                 var list = REQUEST_FRAME_LIST,\r
  95                         i    = list.length,\r
  96                         f;\r
  97                 time = time || ( Date.now ? Date.now() : +new Date );\r
  98             for( ; i; ){\r
  99                 ( f = list[ --i ] )( time );\r
 100                 delete f.uid;\r
 101                 f.kill && f.kill();\r
 102             };\r
 103             list.length = 0;\r
 104         };\r
 105         \r
 106         return {\r
 107                 add : function( time, opt_count, args1, args2, args3 ){\r
 108                         time = time < INTERVAL_TIME ? 1 : ( time / INTERVAL_TIME ) | 0; // 正の数で使える「Math.floor(x)」を「(x | 0)」に;\r
 109 \r
 110                         if( typeof opt_count !== 'number' ){\r
 111                                 args3 = args2;\r
 112                                 args2 = args1;\r
 113                                 args1 = opt_count;\r
 114                                 opt_count = 0;\r
 115                         };\r
 116 \r
 117                         TICKET_LIST[ TICKET_LIST.length ] = [ time, time, opt_count, X.Callback.create( args1, args2, args3 ), ++uid ];\r
 118                     update();\r
 119                     return uid;\r
 120                 },\r
 121                 once : function( time, args1, args2, args3 ){\r
 122                         return X.Timer.add( time, 1, args1, args2, args3 );\r
 123                 },\r
 124                 remove : function( uid ){\r
 125                         var list = TICKET_LIST,\r
 126                                 i    = list.length,\r
 127                                 l    = i,\r
 128                                 f, q;\r
 129                         for( ; i; ){\r
 130                                 if( ( q = list[ --i ] )[ INDEX_UID ] === uid ){\r
 131                                         list.splice( i, 1 );\r
 132                                         f = q[ INDEX_CALLBACK ];\r
 133                                         f.kill && f.kill();\r
 134                                         ( /* q[ INDEX_COUNT ] <= next  || */ l === 1 ) && update();\r
 135                                         q.length = 0;\r
 136                                         break;\r
 137                                 };\r
 138                         };\r
 139                 },\r
 140                 \r
 141                 // string only ie4-\r
 142                 _loop : X.UA.IE && X.UA.IE < 5 && (function( r ){\r
 143                         loop = 'X.Timer._loop()';\r
 144                         return r;\r
 145                 })( loop ),\r
 146                 \r
 147                 requestFrame : function( args1, args2, args3 ){\r
 148                         var i = REQUEST_FRAME_LIST.length,\r
 149                                 f;\r
 150                         i === 0 && ( requestID = ( enterFrame ? enterFrame( onEnterFrame ) : X.Timer.add( 0, 1, onEnterFrame ) ) );\r
 151                         f = REQUEST_FRAME_LIST[ i ] = X.Callback.create( args1, args2, args3 );\r
 152                         return f.uid = ++uid;\r
 153                 },\r
 154                 cancelFrame : function( uid ){\r
 155                         var list = REQUEST_FRAME_LIST,\r
 156                                 l    = list.length,\r
 157                                 i    = l,\r
 158                                 f;\r
 159                         for( ; i; ){\r
 160                                 if( ( f = list[ --i ] ).uid < uid ) break;\r
 161                                 if( f.uid === uid ){\r
 162                                         list.splice( i, 1 );\r
 163                                         delete f.uid;\r
 164                                         f.kill && f.kill();\r
 165                                         l === 1 && ( cancelFrame ? cancelFrame( requestID ) : X.Timer.remove( requestID ) );\r
 166                                         break;\r
 167                                 };\r
 168                         };\r
 169                 }\r
 170         };\r
 171 })();