root / trunk / web / dojo / dojox / lang / aspect.js @ 9
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| 1 | 9 | andrej.cim | /*
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| 2 | Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
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| 3 | Available via Academic Free License >= 2.1 OR the modified BSD license.
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| 4 | see: http://dojotoolkit.org/license for details
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| 5 | */
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| 6 | |||
| 7 | |||
| 8 | if(!dojo._hasResource["dojox.lang.aspect"]){ |
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| 9 | dojo._hasResource["dojox.lang.aspect"]=true; |
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| 10 | dojo.provide("dojox.lang.aspect");
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| 11 | (function(){
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| 12 | var d=dojo,_1=dojox.lang.aspect,ap=Array.prototype,_2=[],_3;
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| 13 | var _4=function(){ |
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| 14 | this.next_before=this.prev_before=this.next_around=this.prev_around=this.next_afterReturning=this.prev_afterReturning=this.next_afterThrowing=this.prev_afterThrowing=this; |
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| 15 | this.counter=0; |
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| 16 | }; |
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| 17 | d.extend(_4,{add:function(_5){
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| 18 | var _6=d.isFunction(_5),_7={advice:_5,dynamic:_6}; |
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| 19 | this._add(_7,"before","",_6,_5); |
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| 20 | this._add(_7,"around","",_6,_5); |
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| 21 | this._add(_7,"after","Returning",_6,_5); |
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| 22 | this._add(_7,"after","Throwing",_6,_5); |
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| 23 | ++this.counter;
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| 24 | return _7;
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| 25 | },_add:function(_8,_9,_a,_b,_c){ |
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| 26 | var _d=_9+_a;
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| 27 | if(_b||_c[_9]||(_a&&_c[_d])){
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| 28 | var _e="next_"+_d,_f="prev_"+_d; |
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| 29 | (_8[_f]=this[_f])[_e]=_8;
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| 30 | (_8[_e]=this)[_f]=_8;
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| 31 | } |
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| 32 | },remove:function(_10){ |
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| 33 | this._remove(_10,"before"); |
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| 34 | this._remove(_10,"around"); |
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| 35 | this._remove(_10,"afterReturning"); |
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| 36 | this._remove(_10,"afterThrowing"); |
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| 37 | --this.counter;
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| 38 | },_remove:function(_11,_12){ |
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| 39 | var _13="next_"+_12,_14="prev_"+_12; |
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| 40 | if(_11[_13]){
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| 41 | _11[_13][_14]=_11[_14]; |
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| 42 | _11[_14][_13]=_11[_13]; |
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| 43 | } |
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| 44 | },isEmpty:function(){ |
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| 45 | return !this.counter; |
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| 46 | }}); |
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| 47 | var _15=function(){ |
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| 48 | return function(){ |
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| 49 | var _16=arguments.callee,_17=_16.advices,ret,i,a,e,t; |
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| 50 | if(_3){
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| 51 | _2.push(_3); |
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| 52 | } |
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| 53 | _3={instance:this,joinPoint:_16,depth:_2.length,around:_17.prev_around,dynAdvices:[],dynIndex:0};
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| 54 | try{
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| 55 | for(i=_17.prev_before;i!=_17;i=i.prev_before){
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| 56 | if(i.dynamic){
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| 57 | _3.dynAdvices.push(a=new i.advice(_3));
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| 58 | if(t=a.before){
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| 59 | t.apply(a,arguments);
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| 60 | } |
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| 61 | }else{
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| 62 | t=i.advice; |
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| 63 | t.before.apply(t,arguments);
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| 64 | } |
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| 65 | } |
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| 66 | try{
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| 67 | ret=(_17.prev_around==_17?_16.target:_1.proceed).apply(this,arguments); |
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| 68 | } |
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| 69 | catch(e){
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| 70 | _3.dynIndex=_3.dynAdvices.length; |
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| 71 | for(i=_17.next_afterThrowing;i!=_17;i=i.next_afterThrowing){
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| 72 | a=i.dynamic?_3.dynAdvices[--_3.dynIndex]:i.advice; |
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| 73 | if(t=a.afterThrowing){
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| 74 | t.call(a,e); |
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| 75 | } |
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| 76 | if(t=a.after){
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| 77 | t.call(a); |
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| 78 | } |
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| 79 | } |
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| 80 | throw e;
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| 81 | } |
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| 82 | _3.dynIndex=_3.dynAdvices.length; |
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| 83 | for(i=_17.next_afterReturning;i!=_17;i=i.next_afterReturning){
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| 84 | a=i.dynamic?_3.dynAdvices[--_3.dynIndex]:i.advice; |
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| 85 | if(t=a.afterReturning){
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| 86 | t.call(a,ret); |
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| 87 | } |
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| 88 | if(t=a.after){
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| 89 | t.call(a); |
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| 90 | } |
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| 91 | } |
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| 92 | var ls=_16._listeners;
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| 93 | for(i in ls){ |
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| 94 | if(!(i in ap)){ |
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| 95 | ls[i].apply(this,arguments); |
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| 96 | } |
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| 97 | } |
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| 98 | } |
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| 99 | finally{
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| 100 | for(i=0;i<_3.dynAdvices.length;++i){ |
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| 101 | a=_3.dynAdvices[i]; |
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| 102 | if(a.destroy){
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| 103 | a.destroy(); |
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| 104 | } |
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| 105 | } |
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| 106 | _3=_2.length?_2.pop():null;
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| 107 | } |
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| 108 | return ret;
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| 109 | }; |
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| 110 | }; |
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| 111 | _1.advise=function(obj,_18,_19){ |
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| 112 | if(typeof obj!="object"){ |
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| 113 | obj=obj.prototype; |
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| 114 | } |
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| 115 | var _1a=[];
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| 116 | if(!(_18 instanceof Array)){ |
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| 117 | _18=[_18]; |
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| 118 | } |
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| 119 | for(var j=0;j<_18.length;++j){ |
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| 120 | var t=_18[j];
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| 121 | if(t instanceof RegExp){ |
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| 122 | for(var i in obj){ |
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| 123 | if(d.isFunction(obj[i])&&t.test(i)){
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| 124 | _1a.push(i); |
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| 125 | } |
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| 126 | } |
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| 127 | }else{
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| 128 | if(d.isFunction(obj[t])){
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| 129 | _1a.push(t); |
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| 130 | } |
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| 131 | } |
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| 132 | } |
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| 133 | if(!d.isArray(_19)){
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| 134 | _19=[_19]; |
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| 135 | } |
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| 136 | return _1.adviseRaw(obj,_1a,_19);
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| 137 | }; |
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| 138 | _1.adviseRaw=function(obj,_1b,_1c){ |
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| 139 | if(!_1b.length||!_1c.length){
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| 140 | return null; |
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| 141 | } |
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| 142 | var m={},al=_1c.length;
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| 143 | for(var i=_1b.length-1;i>=0;--i){ |
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| 144 | var _1d=_1b[i],o=obj[_1d],ao=new Array(al),t=o.advices; |
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| 145 | if(!t){
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| 146 | var x=obj[_1d]=_15();
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| 147 | x.target=o.target||o; |
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| 148 | x.targetName=_1d; |
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| 149 | x._listeners=o._listeners||[]; |
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| 150 | x.advices=new _4;
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| 151 | t=x.advices; |
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| 152 | } |
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| 153 | for(var j=0;j<al;++j){ |
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| 154 | ao[j]=t.add(_1c[j]); |
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| 155 | } |
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| 156 | m[_1d]=ao; |
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| 157 | } |
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| 158 | return [obj,m];
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| 159 | }; |
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| 160 | _1.unadvise=function(_1e){ |
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| 161 | if(!_1e){
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| 162 | return;
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| 163 | } |
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| 164 | var obj=_1e[0],_1f=_1e[1]; |
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| 165 | for(var _20 in _1f){ |
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| 166 | var o=obj[_20],t=o.advices,ao=_1f[_20];
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| 167 | for(var i=ao.length-1;i>=0;--i){ |
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| 168 | t.remove(ao[i]); |
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| 169 | } |
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| 170 | if(t.isEmpty()){
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| 171 | var _21=true,ls=o._listeners; |
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| 172 | if(ls.length){
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| 173 | for(i in ls){ |
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| 174 | if(!(i in ap)){ |
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| 175 | _21=false;
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| 176 | break;
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| 177 | } |
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| 178 | } |
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| 179 | } |
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| 180 | if(_21){
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| 181 | obj[_20]=o.target; |
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| 182 | }else{
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| 183 | var x=obj[_20]=d._listener.getDispatcher();
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| 184 | x.target=o.target; |
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| 185 | x._listeners=ls; |
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| 186 | } |
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| 187 | } |
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| 188 | } |
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| 189 | }; |
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| 190 | _1.getContext=function(){ |
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| 191 | return _3;
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| 192 | }; |
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| 193 | _1.getContextStack=function(){ |
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| 194 | return _2;
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| 195 | }; |
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| 196 | _1.proceed=function(){ |
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| 197 | var _22=_3.joinPoint,_23=_22.advices;
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| 198 | for(var c=_3.around;c!=_23;c=_3.around){ |
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| 199 | _3.around=c.prev_around; |
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| 200 | if(c.dynamic){
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| 201 | var a=_3.dynAdvices[_3.dynIndex++],t=a.around;
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| 202 | if(t){
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| 203 | return t.apply(a,arguments); |
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| 204 | } |
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| 205 | }else{
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| 206 | return c.advice.around.apply(c.advice,arguments); |
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| 207 | } |
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| 208 | } |
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| 209 | return _22.target.apply(_3.instance,arguments); |
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| 210 | }; |
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| 211 | })(); |
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| 212 | } |