0.6.x/js/core/07_XEventDispatcher.js

   1 X.EventDispatcher = ( function(){\r
   2         var LIST = [], TEMP = [], once;\r
   3         \r
   4         function getList( instance, type, create ){\r
   5                 var i = LIST.indexOf( instance ),\r
   6                         data, list;\r
   7                 if( i === -1 ){\r
   8                         if( !create ) return;\r
   9                         LIST[ LIST.length ] = instance;\r
  10                         TEMP[ TEMP.length ] = data = {};\r
  11                 } else {\r
  12                         data = TEMP[ i ];\r
  13                 };\r
  14                 list = data[ type ];\r
  15                 if( !create || list ) return list;\r
  16                 list = data[ type ] = [];\r
  17                 list.data = data;\r
  18                 return list;\r
  19         };\r
  20         \r
  21         function exist( list, arg1, arg2 ){\r
  22                 for( var i = list.length; i; ){\r
  23                         if( list[ --i ].same( arg1, arg2 ) === true ) return i;\r
  24                 };\r
  25                 return -1;\r
  26         };\r
  27         \r
  28         return X.Class.create(\r
  29                 'EventDispatcher',\r
  30                 {\r
  31                         listen : function( type, arg1, arg2 ){\r
  32                                 var list = getList( this, type, true );\r
  33                                 if( list.length && exist( list, arg1, arg2 ) !== -1 ) return;\r
  34                                 list[ list.length ] = X.Callback[ once === true ? 'once' : 'create' ]( arg1, arg2 );\r
  35                         },\r
  36                         listenOnce : function( type, arg1, arg2 ){\r
  37                                 once = true;\r
  38                                 this.listen( type, arg1, arg2 );\r
  39                                 once = false;\r
  40                         },\r
  41                         unlisten : function( type, arg1, arg2 ){\r
  42                                 var list = getList( this, type ),\r
  43                                         list, i;\r
  44                                 if( !list ) return;\r
  45                                 i = exist( list, arg1, arg2 );\r
  46                                 i !== -1 && list.splice( i, 1 );\r
  47                                 if( list.length === 0 ){\r
  48                                         list.data[ e.type ] = void 0;\r
  49                                         delete list.data;\r
  50                                 };\r
  51                         },\r
  52                         listening : function( type, arg1, arg2 ){\r
  53                                 var list = getList( this, type );\r
  54                                 if( !list ) return false;\r
  55                                 return exist( list, arg1, arg2 ) !== -1;\r
  56                         },\r
  57                         dispatch : function( e ){\r
  58                                 // dispatch 中の listen は？\r
  59                                 // \r
  60                                 \r
  61                                 var list = getList( this, e.type ),\r
  62                                         i, f;\r
  63                                 if( !list ) return;\r
  64                                 for( i = list.length; i; ){\r
  65                                         f = list[ --i ];\r
  66                                         // once の場合リストから削除してからファイア\r
  67                                         f.once === true && list.splice( i, 1 );\r
  68                                         if( f( e ) === false ){\r
  69                                                 \r
  70                                         };\r
  71                                         if( list.length === 0 ){\r
  72                                                 list.data[ e.type ] = void 0;\r
  73                                                 delete list.data;\r
  74                                         };\r
  75                                 };\r
  76                                 return;\r
  77                         }\r
  78                 }//, onKillCallback( instance )\r
  79         );\r
  80 })();\r
  81 \r
  82 \r
  83 \r
  84 \r