root / trunk / web / dojo / dojox / cometd / RestChannels.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.cometd.RestChannels"]){ |
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| 9 | dojo._hasResource["dojox.cometd.RestChannels"]=true; |
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| 10 | dojo.provide("dojox.cometd.RestChannels");
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| 11 | dojo.require("dojox.rpc.Client");
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| 12 | dojo.requireIf(dojox.data&&!!dojox.data.JsonRestStore,"dojox.data.restListener");
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| 13 | (function(){
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| 14 | dojo.declare("dojox.cometd.RestChannels",null,{constructor:function(_1){ |
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| 15 | dojo.mixin(this,_1);
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| 16 | if(dojox.rpc.Rest&&this.autoSubscribeRoot){ |
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| 17 | var _2=dojox.rpc.Rest._get;
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| 18 | var _3=this; |
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| 19 | dojox.rpc.Rest._get=function(_4,id){ |
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| 20 | var _5=dojo.xhrGet;
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| 21 | dojo.xhrGet=function(r){ |
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| 22 | var _6=_3.autoSubscribeRoot;
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| 23 | return (_6&&r.url.substring(0,_6.length)==_6)?_3.get(r.url,r):_5(r); |
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| 24 | }; |
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| 25 | var _7=_2.apply(this,arguments); |
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| 26 | dojo.xhrGet=_5; |
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| 27 | return _7;
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| 28 | }; |
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| 29 | } |
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| 30 | },absoluteUrl:function(_8,_9){ |
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| 31 | return new dojo._Url(_8,_9)+""; |
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| 32 | },acceptType:"application/rest+json,application/http;q=0.9,*/*;q=0.7",subscriptions:{},subCallbacks:{},autoReconnectTime:3000,reloadDataOnReconnect:true,sendAsJson:false,url:"/channels",autoSubscribeRoot:"/",open:function(){ |
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| 33 | this.started=true; |
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| 34 | if(!this.connected){ |
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| 35 | this.connectionId=dojox.rpc.Client.clientId;
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| 36 | var _a=this.createdClientId?"Client-Id":"Create-Client-Id"; |
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| 37 | this.createdClientId=true; |
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| 38 | var _b={Accept:this.acceptType}; |
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| 39 | _b[_a]=this.connectionId;
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| 40 | var _c=dojo.xhrPost({headers:_b,url:this.url,noStatus:true}); |
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| 41 | var _d=this; |
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| 42 | this.lastIndex=0; |
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| 43 | var _e,_f=function(_10){ |
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| 44 | if(typeof dojo=="undefined"){ |
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| 45 | return null; |
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| 46 | } |
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| 47 | if(xhr&&xhr.status>400){ |
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| 48 | return _e(true); |
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| 49 | } |
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| 50 | if(typeof _10=="string"){ |
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| 51 | _10=_10.substring(_d.lastIndex); |
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| 52 | } |
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| 53 | var _11=xhr&&(xhr.contentType||xhr.getResponseHeader("Content-Type"))||(typeof _10!="string"&&"already json"); |
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| 54 | var _12=_d.onprogress(xhr,_10,_11);
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| 55 | if(_12){
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| 56 | if(_e()){
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| 57 | return new Error(_12); |
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| 58 | } |
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| 59 | } |
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| 60 | if(!xhr||xhr.readyState==4){ |
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| 61 | xhr=null;
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| 62 | if(_d.connected){
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| 63 | _d.connected=false;
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| 64 | _d.open(); |
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| 65 | } |
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| 66 | } |
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| 67 | return _10;
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| 68 | }; |
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| 69 | _e=function(_13){ |
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| 70 | if(xhr&&xhr.status==409){ |
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| 71 | _d.disconnected(); |
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| 72 | return null; |
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| 73 | } |
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| 74 | _d.createdClientId=false;
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| 75 | _d.disconnected(); |
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| 76 | return _13;
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| 77 | }; |
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| 78 | _c.addCallbacks(_f,_e); |
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| 79 | var xhr=_c.ioArgs.xhr;
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| 80 | if(xhr){
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| 81 | xhr.onreadystatechange=function(){ |
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| 82 | var _14;
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| 83 | try{
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| 84 | if(xhr.readyState==3){ |
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| 85 | _d.readyState=3;
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| 86 | _14=xhr.responseText; |
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| 87 | } |
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| 88 | } |
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| 89 | catch(e){
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| 90 | } |
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| 91 | if(typeof _14=="string"){ |
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| 92 | _f(_14); |
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| 93 | } |
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| 94 | }; |
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| 95 | } |
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| 96 | if(window.attachEvent){
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| 97 | window.attachEvent("onunload",function(){ |
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| 98 | _d.connected=false;
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| 99 | if(xhr){
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| 100 | xhr.abort(); |
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| 101 | } |
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| 102 | }); |
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| 103 | } |
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| 104 | this.connected=true; |
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| 105 | } |
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| 106 | },_send:function(_15,_16,_17){ |
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| 107 | if(this.sendAsJson){ |
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| 108 | _16.postData=dojo.toJson({target:_16.url,method:_15,content:_17,params:_16.content,subscribe:_16.headers["Subscribe"]});
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| 109 | _16.url=this.url;
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| 110 | _15="POST";
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| 111 | }else{
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| 112 | _16.postData=dojo.toJson(_17); |
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| 113 | } |
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| 114 | return dojo.xhr(_15,_16,_16.postData);
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| 115 | },subscribe:function(_18,_19){ |
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| 116 | _19=_19||{};
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| 117 | _19.url=this.absoluteUrl(this.url,_18); |
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| 118 | if(_19.headers){
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| 119 | delete _19.headers.Range;
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| 120 | } |
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| 121 | var _1a=this.subscriptions[_18]; |
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| 122 | var _1b=_19.method||"HEAD"; |
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| 123 | var _1c=_19.since;
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| 124 | var _1d=_19.callback;
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| 125 | var _1e=_19.headers||(_19.headers={});
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| 126 | this.subscriptions[_18]=_1c||_1a||0; |
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| 127 | var _1f=this.subCallbacks[_18]; |
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| 128 | if(_1d){
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| 129 | this.subCallbacks[_18]=_1f?function(m){ |
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| 130 | _1f(m); |
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| 131 | _1d(m); |
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| 132 | }:_1d; |
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| 133 | } |
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| 134 | if(!this.connected){ |
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| 135 | this.open();
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| 136 | } |
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| 137 | if(_1a===undefined||_1a!=_1c){ |
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| 138 | _1e["Cache-Control"]="max-age=0"; |
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| 139 | _1c=typeof _1c=="number"?new Date(_1c).toUTCString():_1c; |
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| 140 | if(_1c){
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| 141 | _1e["Subscribe-Since"]=_1c;
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| 142 | } |
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| 143 | _1e["Subscribe"]=_19.unsubscribe?"none":"*"; |
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| 144 | var dfd=this._send(_1b,_19); |
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| 145 | var _20=this; |
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| 146 | dfd.addBoth(function(_21){
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| 147 | var xhr=dfd.ioArgs.xhr;
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| 148 | if(!(_21 instanceof Error)){ |
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| 149 | if(_19.confirmation){
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| 150 | _19.confirmation(); |
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| 151 | } |
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| 152 | } |
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| 153 | if(xhr&&xhr.getResponseHeader("Subscribed")=="OK"){ |
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| 154 | var _22=xhr.getResponseHeader("Last-Modified"); |
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| 155 | if(xhr.responseText){
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| 156 | _20.subscriptions[_18]=_22||new Date().toUTCString();
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| 157 | }else{
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| 158 | return null; |
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| 159 | } |
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| 160 | }else{
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| 161 | if(xhr&&!(_21 instanceof Error)){ |
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| 162 | delete _20.subscriptions[_18];
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| 163 | } |
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| 164 | } |
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| 165 | if(!(_21 instanceof Error)){ |
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| 166 | var _23={responseText:xhr&&xhr.responseText,channel:_18,getResponseHeader:function(_24){ |
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| 167 | return xhr.getResponseHeader(_24);
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| 168 | },getAllResponseHeaders:function(){ |
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| 169 | return xhr.getAllResponseHeaders();
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| 170 | },result:_21};
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| 171 | if(_20.subCallbacks[_18]){
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| 172 | _20.subCallbacks[_18](_23); |
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| 173 | } |
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| 174 | }else{
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| 175 | if(_20.subCallbacks[_18]){
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| 176 | _20.subCallbacks[_18](xhr); |
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| 177 | } |
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| 178 | } |
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| 179 | return _21;
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| 180 | }); |
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| 181 | return dfd;
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| 182 | } |
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| 183 | return null; |
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| 184 | },publish:function(_25,_26){ |
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| 185 | return this._send("POST",{url:_25,contentType:"application/json"},_26); |
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| 186 | },_processMessage:function(_27){ |
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| 187 | _27.event=_27.event||_27.getResponseHeader("Event");
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| 188 | if(_27.event=="connection-conflict"){ |
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| 189 | return "conflict"; |
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| 190 | } |
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| 191 | try{
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| 192 | _27.result=_27.result||dojo.fromJson(_27.responseText); |
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| 193 | } |
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| 194 | catch(e){
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| 195 | } |
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| 196 | var _28=this; |
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| 197 | var loc=_27.channel=new dojo._Url(this.url,_27.source||_27.getResponseHeader("Content-Location"))+""; |
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| 198 | if(loc in this.subscriptions&&_27.getResponseHeader){ |
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| 199 | this.subscriptions[loc]=_27.getResponseHeader("Last-Modified"); |
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| 200 | } |
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| 201 | if(this.subCallbacks[loc]){ |
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| 202 | setTimeout(function(){
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| 203 | _28.subCallbacks[loc](_27); |
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| 204 | },0);
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| 205 | } |
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| 206 | this.receive(_27);
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| 207 | return null; |
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| 208 | },onprogress:function(xhr,_29,_2a){ |
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| 209 | if(!_2a||_2a.match(/application\/rest\+json/)){ |
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| 210 | var _2b=_29.length;
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| 211 | _29=_29.replace(/^\s*[,\[]?/,"[").replace(/[,\]]?\s*$/,"]"); |
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| 212 | try{
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| 213 | var _2c=dojo.fromJson(_29);
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| 214 | this.lastIndex+=_2b;
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| 215 | } |
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| 216 | catch(e){
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| 217 | } |
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| 218 | }else{
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| 219 | if(dojox.io&&dojox.io.httpParse&&_2a.match(/application\/http/)){ |
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| 220 | var _2d=""; |
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| 221 | if(xhr&&xhr.getAllResponseHeaders){
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| 222 | _2d=xhr.getAllResponseHeaders(); |
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| 223 | } |
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| 224 | _2c=dojox.io.httpParse(_29,_2d,xhr.readyState!=4);
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| 225 | }else{
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| 226 | if(typeof _29=="object"){ |
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| 227 | _2c=_29; |
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| 228 | } |
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| 229 | } |
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| 230 | } |
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| 231 | if(_2c){
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| 232 | for(var i=0;i<_2c.length;i++){ |
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| 233 | if(this._processMessage(_2c[i])){ |
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| 234 | return "conflict"; |
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| 235 | } |
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| 236 | } |
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| 237 | return null; |
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| 238 | } |
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| 239 | if(!xhr){
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| 240 | return "error"; |
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| 241 | } |
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| 242 | if(xhr.readyState!=4){ |
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| 243 | return null; |
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| 244 | } |
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| 245 | if(xhr.__proto__){
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| 246 | xhr={channel:"channel",__proto__:xhr};
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| 247 | } |
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| 248 | return this._processMessage(xhr); |
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| 249 | },get:function(_2e,_2f){ |
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| 250 | (_2f=_2f||{}).method="GET";
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| 251 | return this.subscribe(_2e,_2f); |
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| 252 | },receive:function(_30){ |
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| 253 | if(dojox.data&&dojox.data.restListener){
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| 254 | dojox.data.restListener(_30); |
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| 255 | } |
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| 256 | },disconnected:function(){ |
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| 257 | var _31=this; |
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| 258 | if(this.connected){ |
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| 259 | this.connected=false; |
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| 260 | if(this.started){ |
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| 261 | setTimeout(function(){
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| 262 | var _32=_31.subscriptions;
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| 263 | _31.subscriptions={};
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| 264 | for(var i in _32){ |
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| 265 | if(_31.reloadDataOnReconnect&&dojox.rpc.JsonRest){
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| 266 | delete dojox.rpc.Rest._index[i];
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| 267 | dojox.rpc.JsonRest.fetch(i); |
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| 268 | }else{
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| 269 | _31.subscribe(i,{since:_32[i]});
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| 270 | } |
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| 271 | } |
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| 272 | _31.open(); |
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| 273 | },this.autoReconnectTime);
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| 274 | } |
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| 275 | } |
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| 276 | },unsubscribe:function(_33,_34){ |
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| 277 | _34=_34||{};
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| 278 | _34.unsubscribe=true;
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| 279 | this.subscribe(_33,_34);
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| 280 | },disconnect:function(){ |
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| 281 | this.started=false; |
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| 282 | this.xhr.abort();
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| 283 | }}); |
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| 284 | var _35=dojox.cometd.RestChannels.defaultInstance=new dojox.cometd.RestChannels(); |
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| 285 | if(dojox.cometd.connectionTypes){
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| 286 | _35.startup=function(_36){ |
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| 287 | _35.open(); |
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| 288 | this._cometd._deliver({channel:"/meta/connect",successful:true}); |
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| 289 | }; |
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| 290 | _35.check=function(_37,_38,_39){ |
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| 291 | for(var i=0;i<_37.length;i++){ |
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| 292 | if(_37[i]=="rest-channels"){ |
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| 293 | return !_39;
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| 294 | } |
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| 295 | } |
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| 296 | return false; |
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| 297 | }; |
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| 298 | _35.deliver=function(_3a){ |
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| 299 | }; |
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| 300 | dojo.connect(this,"receive",null,function(_3b){ |
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| 301 | _3b.data=_3b.result; |
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| 302 | this._cometd._deliver(_3b);
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| 303 | }); |
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| 304 | _35.sendMessages=function(_3c){ |
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| 305 | for(var i=0;i<_3c.length;i++){ |
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| 306 | var _3d=_3c[i];
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| 307 | var _3e=_3d.channel;
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| 308 | var _3f=this._cometd; |
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| 309 | var _40={confirmation:function(){ |
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| 310 | _3f._deliver({channel:_3e,successful:true});
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| 311 | }}; |
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| 312 | if(_3e=="/meta/subscribe"){ |
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| 313 | this.subscribe(_3d.subscription,_40);
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| 314 | }else{
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| 315 | if(_3e=="/meta/unsubscribe"){ |
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| 316 | this.unsubscribe(_3d.subscription,_40);
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| 317 | }else{
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| 318 | if(_3e=="/meta/connect"){ |
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| 319 | _40.confirmation(); |
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| 320 | }else{
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| 321 | if(_3e=="/meta/disconnect"){ |
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| 322 | _35.disconnect(); |
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| 323 | _40.confirmation(); |
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| 324 | }else{
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| 325 | if(_3e.substring(0,6)!="/meta/"){ |
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| 326 | this.publish(_3e,_3d.data);
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| 327 | } |
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| 328 | } |
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| 329 | } |
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| 330 | } |
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| 331 | } |
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| 332 | } |
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| 333 | }; |
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| 334 | dojox.cometd.connectionTypes.register("rest-channels",_35.check,_35,false,true); |
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| 335 | } |
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| 336 | })(); |
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| 337 | } |