0.6.x/js/core/04_XClass.js

   1 /**\r
   2  * Class を定義し システムの管理下に置く．\r
   3  * 全てのクラスと pool が有効の場合インスタンスへの参照が保持される．\r
   4  *  1. X.Class.create( def, opt_final, opt_pool, opt_abstract ) でクラスを登録．\r
   5  *  2. コンストラクタ となるメソッドは、Constructor : function( arg ){ ... }, に書く．\r
   6  *  3. 通常通り new で インスタンス生成\r
   7  *  4. kill() でオブジェクトをクリーンして削除、pool が有効の場合は pool される．\r
   8  *  5. pool が有効の場合、new で pool されたインスタンスが返される．\r
   9  *  6. \r
  10  * \r
  11  */\r
  12 X.Class = ( function(){\r
  13         var CLASS_LIST         = [],\r
  14                 DEF_LIST           = [],\r
  15                 PRIVATE_CLASS_LIST = [],\r
  16                 PRIVATE_DEF_LIST   = [],\r
  17                 CONSTRUCTOR        = 'Constructor',\r
  18                 killPrivateFlag    = false,\r
  19                 traits             = null,\r
  20                 use__proto__       = !!X.emptyFunction.prototype.__proto__;\r
  21         \r
  22         /* サブクラスを作るメソッド  \r
  23          * var subClass = superClass.inherits( ... ) \r
  24          * http://d.hatena.ne.jp/m-hiyama/20051018/1129605002\r
  25          */\r
  26         function inherits( /* displayName, classSetting, opt_PrivateClass, props */ ){\r
  27                 var args        = X.copyArray( arguments ),\r
  28                         params      = [],\r
  29                         Super       = this,\r
  30                         superDef    = X.Class._getClassDef( Super ),\r
  31                         displayName = args[ 0 ],\r
  32                         classSetting,\r
  33                         opt_super,\r
  34                         klass, def;\r
  35                 if( superDef.Final ) X.Notification.critical( 'X.Class inherits, Class is final!' );\r
  36                 \r
  37                 // サブクラス名\r
  38                 if( X.Type.isString( displayName ) ){\r
  39                         args.shift();\r
  40                 } else {\r
  41                         displayName = 'SubClass of ' + superDef.displayName;\r
  42                 };\r
  43                 params.push( displayName );\r
  44                 \r
  45                 // サブクラス設定\r
  46                 classSetting = args[ 0 ];\r
  47                 if( X.Type.isNumber( classSetting ) ){\r
  48                         args.shift();\r
  49                 } else {\r
  50                         classSetting = superDef.setting;\r
  51                 };\r
  52                 if( superDef.isPrivate ) classSetting = classSetting | X.Class.PRIVATE_DATA;\r
  53                 opt_super = !!( classSetting & X.Class.SUPER_ACCESS );\r
  54                 params.push( classSetting );\r
  55 \r
  56                 // サブクラスのシャドウ\r
  57                 if( X.Class._getClass( args[ 0 ] ) ){\r
  58                         params.push( args.shift() );\r
  59                 } else\r
  60                 if( superDef.privateClass ){\r
  61                         params.push( superDef.privateClass );\r
  62                 };\r
  63                 params.push( args[ 0 ] ); /* props サブクラスでは未定義でも可 */\r
  64                 \r
  65                 // 継承クラスの作成\r
  66                 if( use__proto__ ){\r
  67                         traits = Super.prototype;\r
  68                 } else {\r
  69                         Super.__new = null;\r
  70                         traits = new Super();\r
  71                         Super.__new = C;                        \r
  72                 };\r
  73                 klass  = X.Class.create.apply( X.Class, params );\r
  74                 traits = null;\r
  75                 \r
  76                 // 継承用プロパティを控える\r
  77                 if( opt_super === true ){\r
  78                         def = X.Class._getClassDef( klass );\r
  79                         def.Super = Super;\r
  80                         def.SuperProto = Super.prototype;\r
  81                         def.SuperConstructor = superDef[ CONSTRUCTOR ] || superDef.SuperConstructor;\r
  82                 };\r
  83                 \r
  84                 return klass;\r
  85         };\r
  86         \r
  87         /* X.Class.create で作られたクラスのインスタンスが共通で備えるメソッド */\r
  88         var CommonProps = {\r
  89                 kill : function(){\r
  90                         var instance = this,\r
  91                                 klass    = X.Class._getClass( instance ),\r
  92                                 def      = X.Class._getClassDef( klass ),\r
  93                                 data, p, i;\r
  94                         if( def.isPrivate === true && killPrivateFlag === false ){\r
  95                                 X.Notification.critical( 'PrivateInstance.kill() work in PrivateUser.kill().' );\r
  96                                 return;\r
  97                         };\r
  98                         killPrivateFlag = false; // onKill 内で PrivateInstance.kill() を防ぐため\r
  99                         // onKill() === false の場合、kill のキャンセル\r
 100                         // private      は false での キャンセル は無視される\r
 101                         if( X.Type.isFunction( instance.onKill ) && instance.onKill() === false && !def.isPrivate ){\r
 102                                 return;\r
 103                         };\r
 104                         for( p in instance ){\r
 105                                 if( instance.hasOwnProperty && !instance.hasOwnProperty( p ) ) continue;\r
 106                                 delete instance[ p ];\r
 107                         };\r
 108                         if( def.pool ){\r
 109                                 def.live && def.live.splice( def.live.indexOf( instance ), 1 );\r
 110                                 def.pool[ def.pool.length ] = instance;\r
 111                         };\r
 112                         if( def.privateClass ){\r
 113                                 i = def.userList.indexOf( instance );\r
 114                                 if( i !== -1 ){\r
 115                                         data            = X.Class._getPrivate( instance );\r
 116                                         killPrivateFlag = true;\r
 117                                         data.kill();\r
 118                                         def.dataList.splice( i, 1 );\r
 119                                         def.userList.splice( i, 1 );\r
 120                                 };\r
 121                         };\r
 122                 },\r
 123                 instanceOf : function( klass ){\r
 124                         var Super = this;\r
 125                         if( this.constructor === klass ) return true;\r
 126                         while( Super = X.Class._getClassDef( Super ).Super ){\r
 127                                 if( Super === klass ) return true;\r
 128                         };\r
 129                         return false;\r
 130                 }\r
 131         };\r
 132         \r
 133         /*\r
 134          * new の実体．コンストラクタの機能は instance.Constructor に書く．\r
 135          * これにより pool された オブジェクト（破棄されたインスタンス） を再利用できる\r
 136          */\r
 137         /* Constructor Real for GeneralClass */\r
 138         function C( args ){\r
 139                 var klass    = this,\r
 140                         def      = X.Class._getClassDef( klass ),\r
 141                         dataUser = def._tempUser,\r
 142                         instance,\r
 143                         userDef;\r
 144                 if( def.Abstract === true ){\r
 145                         X.Notification.critical( 'AbstractClass!' );\r
 146                         return;\r
 147                 };\r
 148                 if( def.isPrivate === true && dataUser === null ){\r
 149                         X.Notification.critical( 'use myClass.newPrivate( instance, ...args )!' );\r
 150                         return;\r
 151                 };\r
 152                 klass.__new = null;\r
 153                 instance = def.pool && def.pool.length > 0 ? def.pool.pop() : new klass();\r
 154                 klass.__new = C;\r
 155                 if( def.isPrivate === true ){\r
 156                         userDef = X.Class._getClassDef( dataUser );\r
 157                         userDef.dataList.push( instance );\r
 158                         userDef.userList.push( dataUser );\r
 159                         instance.User = dataUser;\r
 160                         def._tempUser = null;\r
 161                 } else {\r
 162                         def.live && def.live.push( instance );\r
 163                 };\r
 164                 if( def.Super ){\r
 165                         // klass.prototype に移動\r
 166                         instance.Super = def.SuperProto;\r
 167                         instance.SuperConstructor = superConstructor;\r
 168                 };\r
 169                 def[ CONSTRUCTOR ] ?\r
 170                         def[ CONSTRUCTOR ].apply( instance, args ) :\r
 171                 def.SuperConstructor &&\r
 172                         def.SuperConstructor.apply( instance, args );\r
 173                 return instance;\r
 174         };\r
 175         \r
 176         function superConstructor(){\r
 177                 var s = X.Class._getClassDef( this ).SuperConstructor;\r
 178                 s && s.apply( this, arguments );\r
 179         };\r
 180         \r
 181         return {\r
 182                 POOL_OBJECT  : 1,\r
 183                 ABSTRACT     : 2,\r
 184                 FINAL        : 4,\r
 185                 SUPER_ACCESS : 8,\r
 186                 PRIVATE_DATA : 16,\r
 187                 create : function( /* displayName, classSetting, opt_PrivateClass, props */ ){\r
 188                         var args        = X.copyArray( arguments ),\r
 189                                 displayName = args[ 0 ],\r
 190                                 classSetting,\r
 191                                 opt_pool, opt_abstract, opt_final, opt_private,\r
 192                                 privateDef,\r
 193                                 props,\r
 194                                 klass,\r
 195                                 classDef = {};\r
 196                         if( X.Type.isString( displayName ) === true ){\r
 197                                 classDef.displayName = displayName;\r
 198                                 args.shift();\r
 199                         };\r
 200                         \r
 201                         // クラス設定\r
 202                         classDef.setting = classSetting = args[ 0 ];\r
 203                         if( X.Type.isNumber( classSetting ) ){\r
 204                                 opt_pool     = !!( classSetting & X.Class.POOL_OBJECT  );\r
 205                                 opt_abstract = !!( classSetting & X.Class.ABSTRACT     );\r
 206                                 opt_final    = !!( classSetting & X.Class.FINAL        );\r
 207                                 opt_private  = !!( classSetting & X.Class.PRIVATE_DATA );\r
 208                                 if( opt_final && opt_abstract ){\r
 209                                         X.Notification.critical( 'final & Abstract!' );\r
 210                                         return;\r
 211                                 };      \r
 212                                 args.shift();\r
 213                         } else {\r
 214                                 classDef.setting = 0;\r
 215                         };\r
 216                         \r
 217                         // シャドウクラス\r
 218                         if( PRIVATE_CLASS_LIST.indexOf( args[ 0 ] ) !== -1 ){\r
 219                                 privateDef = X.Class._getClassDef( args[ 0 ] );\r
 220                                 if( privateDef.isPrivate !== true ){\r
 221                                         X.Notification.critical( 'PrivateClass not found! please, X.Class.create( X.Class.PRIVATE, {...} ).' );\r
 222                                         return;\r
 223                                 } else\r
 224                                 if( privateDef.Abstract === true ){\r
 225                                         X.Notification.critical( 'PrivateClass is Abstract!' );\r
 226                                         return;\r
 227                                 };\r
 228                                 classDef.privateClass = args.shift();\r
 229                         };\r
 230                         \r
 231                         // インスタンスのメンバー\r
 232                         props = args[ 0 ];\r
 233                         if( props === null || !X.Type.isObject( props ) ){\r
 234                                 // サブクラスの場合、クラス定義の上書きがなくても作成可能\r
 235                                 if( !traits ){\r
 236                                         X.Notification.critical( 'No Class Def!' );\r
 237                                         return;\r
 238                                 };\r
 239                                 props = {};\r
 240                         } else\r
 241                         if( props[ CONSTRUCTOR ] && X.Type.isFunction( props[ CONSTRUCTOR ] ) ){\r
 242                                 classDef[ CONSTRUCTOR ] = props[ CONSTRUCTOR ];\r
 243                         };\r
 244 \r
 245                         klass = new Function( 'var a=arguments,f=a.callee;if(f.__new)return f.__new(a)' );\r
 246                         klass.__new = C;\r
 247                         klass.superClassOf = X.Class._superClassOf;\r
 248                         klass.subClassOf   = X.Class._subClassOf;\r
 249                         \r
 250                         if( use__proto__ ){\r
 251                                 X.Class._override( klass.prototype, props, true );\r
 252                                 if( traits ){\r
 253                                         klass.prototype.__proto__ = traits;\r
 254                                 } else {\r
 255                                         X.Class._override( klass.prototype, CommonProps, false );\r
 256                                 };\r
 257                         //if( X.UA.Safari && X.UA.Safari < 3 ){ // TODO Gecko もこちらへ\r
 258                         //      X.Class._override( X.Class._override( traits || klass.prototype, props, true ), CommonProps, false );\r
 259                         //      if( traits ) klass.prototype.__proto__ = traits;\r
 260                         } else {\r
 261                                 klass.prototype = X.Class._override( X.Class._override( traits || klass.prototype, props, true ), CommonProps, false );\r
 262                                 klass.prototype.constructor = klass;\r
 263                         };\r
 264                         klass.name = displayName;\r
 265                         \r
 266                         if( opt_abstract === true ){\r
 267                                 classDef.Abstract = true;\r
 268                         } else\r
 269                         if( opt_pool === true ){\r
 270                                 classDef.pool = [];\r
 271                                 if( opt_private === false ) classDef.live = [];\r
 272                         };                      \r
 273                         if( opt_final === true ){\r
 274                                 classDef.Final = true;\r
 275                         } else {\r
 276                                 klass.inherits = inherits;\r
 277                         };                      \r
 278                         if( opt_private === true ){\r
 279                                 if( classDef.privateClass ){\r
 280                                         X.Notification.critical( 'Private Data Class has no PrivateClass!' );\r
 281                                         return;\r
 282                                 };\r
 283                                 classDef.isPrivate = true;\r
 284                                 PRIVATE_CLASS_LIST.push( klass );\r
 285                                 PRIVATE_DEF_LIST.push( classDef );\r
 286                         } else {\r
 287                                 CLASS_LIST.push( klass );\r
 288                                 DEF_LIST.push( classDef );                              \r
 289                         };\r
 290                         return klass;\r
 291                 },\r
 292                 sys_shutdown : function(){\r
 293                         \r
 294                 },\r
 295                 _getClass : function( instance ){\r
 296                         var cList    = CLASS_LIST,\r
 297                                 i        = cList.length,\r
 298                                 klass;\r
 299                         for( ; i; ){\r
 300                                 klass = cList[ --i ];\r
 301                                 if( instance.constructor === klass ) return klass;\r
 302                         };\r
 303                         cList = PRIVATE_CLASS_LIST;\r
 304                         i     = cList.length;\r
 305                         for( ; i; ){\r
 306                                 klass = cList[ --i ];\r
 307                                 if( instance.constructor === klass ) return klass;\r
 308                         };\r
 309                         \r
 310                         if( cList.indexOf( instance ) !== -1 ) return instance;\r
 311                         if( CLASS_LIST.indexOf( instance ) !== -1 ) return instance;\r
 312                 },\r
 313                 _getClassDef : function( KlassOrInstance ){\r
 314                         var i = CLASS_LIST.indexOf( KlassOrInstance );\r
 315                         if( i === -1 ) i = CLASS_LIST.indexOf( X.Class._getClass( KlassOrInstance ) );\r
 316                         if( i !== -1 ) return DEF_LIST[ i ];\r
 317                         \r
 318                         i = PRIVATE_CLASS_LIST.indexOf( KlassOrInstance );\r
 319                         if( i === -1 ) i = PRIVATE_CLASS_LIST.indexOf( X.Class._getClass( KlassOrInstance ) );\r
 320                         if( i !== -1 ) return PRIVATE_DEF_LIST[ i ];\r
 321                         \r
 322                         if( DEF_LIST.indexOf( KlassOrInstance ) !== -1 ) return KlassOrInstance;\r
 323                         if( PRIVATE_DEF_LIST.indexOf( KlassOrInstance ) !== -1 ) return KlassOrInstance;\r
 324                 },\r
 325                 _newPrivate : function( /* instance, args */ ){\r
 326                         var args         = X.copyArray( arguments ),\r
 327                                 user         = args.shift(),\r
 328                                 def          = X.Class._getClassDef( user ),\r
 329                                 privateClass = def.privateClass,\r
 330                                 privateDef   = X.Class._getClassDef( privateClass ),\r
 331                                 i            = -1;\r
 332                         if( def.userList ){\r
 333                                 i = def.userList.indexOf( user );\r
 334                         } else {\r
 335                                 def.userList = [];\r
 336                                 def.dataList = [];\r
 337                         };\r
 338                         if( i !== -1 ){\r
 339                                 X.Notification.critical( 'PrivateData already exist!' );\r
 340                                 return;\r
 341                         };\r
 342                         if( privateDef._tempUser ){\r
 343                                 X.Notification.critical( 'newPrivate を連続呼び出しされたところ破綻' );\r
 344                                 return;\r
 345                         };\r
 346                         privateDef._tempUser = user;\r
 347                         return privateClass.__new( args );\r
 348                 },\r
 349                 _getPrivate : function( instance ){\r
 350                         var def = X.Class._getClassDef( instance ),\r
 351                                 i   = def.userList.indexOf( instance );\r
 352                         if( i !== -1 ) return def.dataList[ i ];\r
 353                 },\r
 354                 /* over のプロパティを target にコピーする．ただし target の プロパティが優先, force で解除 */\r
 355                 _override : function ( target, src, force ){\r
 356                         var p;\r
 357                         for( p in src ){\r
 358                                 if( p === 'Super' || p === 'SuperConstructor' || p === '__proto__' || p === 'prototype' || p === 'constructor' ){\r
 359                                         X.Notification.critical( 'Super & SuperConstructor is reserved!' );\r
 360                                         return;\r
 361                                 };\r
 362                                 if( force || target[ p ] === void 0 ){\r
 363                                         target[ p ] = src[ p ];\r
 364                                 };\r
 365                         };\r
 366                         return target;\r
 367                 },\r
 368                 _superClassOf : function(){\r
 369                         \r
 370                 },\r
 371                 _subClassOf : function(){\r
 372                         \r
 373                 }\r
 374         };\r
 375 })();\r
 376 \r
 377 console.log( 'X.Core.Class' );\r