lib/dojo/_base/window.js.uncompressed.js

   1 define("dojo/_base/window", ["./kernel", "./lang", "../sniff"], function(dojo, lang, has){
   2 // module:
   3 //              dojo/_base/window
   4
   5 var ret = {
   6         // summary:
   7         //              API to save/set/restore the global/document scope.
   8
   9         global: dojo.global,
  10         /*=====
  11          global: {
  12                  // summary:
  13                  //             Alias for the current window. 'global' can be modified
  14                  //             for temporary context shifting. See also withGlobal().
  15                  // description:
  16                  //             Use this rather than referring to 'window' to ensure your code runs
  17                  //             correctly in managed contexts.
  18          },
  19          =====*/
  20
  21         doc: this["document"] || null,
  22         /*=====
  23         doc: {
  24                 // summary:
  25                 //              Alias for the current document. 'doc' can be modified
  26                 //              for temporary context shifting. See also withDoc().
  27                 // description:
  28                 //              Use this rather than referring to 'window.document' to ensure your code runs
  29                 //              correctly in managed contexts.
  30                 // example:
  31                 //      |       n.appendChild(dojo.doc.createElement('div'));
  32         },
  33         =====*/
  34
  35         body: function(/*Document?*/ doc){
  36                 // summary:
  37                 //              Return the body element of the specified document or of dojo/_base/window::doc.
  38                 // example:
  39                 //      |       win.body().appendChild(dojo.doc.createElement('div'));
  40
  41                 // Note: document.body is not defined for a strict xhtml document
  42                 // Would like to memoize this, but dojo.doc can change vi dojo.withDoc().
  43                 doc = doc || dojo.doc;
  44                 return doc.body || doc.getElementsByTagName("body")[0]; // Node
  45         },
  46
  47         setContext: function(/*Object*/ globalObject, /*DocumentElement*/ globalDocument){
  48                 // summary:
  49                 //              changes the behavior of many core Dojo functions that deal with
  50                 //              namespace and DOM lookup, changing them to work in a new global
  51                 //              context (e.g., an iframe). The varibles dojo.global and dojo.doc
  52                 //              are modified as a result of calling this function and the result of
  53                 //              `dojo.body()` likewise differs.
  54                 dojo.global = ret.global = globalObject;
  55                 dojo.doc = ret.doc = globalDocument;
  56         },
  57
  58         withGlobal: function(   /*Object*/ globalObject,
  59                                                         /*Function*/ callback,
  60                                                         /*Object?*/ thisObject,
  61                                                         /*Array?*/ cbArguments){
  62                 // summary:
  63                 //              Invoke callback with globalObject as dojo.global and
  64                 //              globalObject.document as dojo.doc.
  65                 // description:
  66                 //              Invoke callback with globalObject as dojo.global and
  67                 //              globalObject.document as dojo.doc. If provided, globalObject
  68                 //              will be executed in the context of object thisObject
  69                 //              When callback() returns or throws an error, the dojo.global
  70                 //              and dojo.doc will be restored to its previous state.
  71
  72                 var oldGlob = dojo.global;
  73                 try{
  74                         dojo.global = ret.global = globalObject;
  75                         return ret.withDoc.call(null, globalObject.document, callback, thisObject, cbArguments);
  76                 }finally{
  77                         dojo.global = ret.global = oldGlob;
  78                 }
  79         },
  80
  81         withDoc: function(      /*DocumentElement*/ documentObject,
  82                                                 /*Function*/ callback,
  83                                                 /*Object?*/ thisObject,
  84                                                 /*Array?*/ cbArguments){
  85                 // summary:
  86                 //              Invoke callback with documentObject as dojo/_base/window::doc.
  87                 // description:
  88                 //              Invoke callback with documentObject as dojo/_base/window::doc. If provided,
  89                 //              callback will be executed in the context of object thisObject
  90                 //              When callback() returns or throws an error, the dojo/_base/window::doc will
  91                 //              be restored to its previous state.
  92
  93                 var oldDoc = ret.doc,
  94                         oldQ = has("quirks"),
  95                         oldIE = has("ie"), isIE, mode, pwin;
  96
  97                 try{
  98                         dojo.doc = ret.doc = documentObject;
  99                         // update dojo.isQuirks and the value of the has feature "quirks".
 100                         // remove setting dojo.isQuirks and dojo.isIE for 2.0
 101                         dojo.isQuirks = has.add("quirks", dojo.doc.compatMode == "BackCompat", true, true); // no need to check for QuirksMode which was Opera 7 only
 102
 103                         if(has("ie")){
 104                                 if((pwin = documentObject.parentWindow) && pwin.navigator){
 105                                         // re-run IE detection logic and update dojo.isIE / has("ie")
 106                                         // (the only time parentWindow/navigator wouldn't exist is if we were not
 107                                         // passed an actual legitimate document object)
 108                                         isIE = parseFloat(pwin.navigator.appVersion.split("MSIE ")[1]) || undefined;
 109                                         mode = documentObject.documentMode;
 110                                         if(mode && mode != 5 && Math.floor(isIE) != mode){
 111                                                 isIE = mode;
 112                                         }
 113                                         dojo.isIE = has.add("ie", isIE, true, true);
 114                                 }
 115                         }
 116
 117                         if(thisObject && typeof callback == "string"){
 118                                 callback = thisObject[callback];
 119                         }
 120
 121                         return callback.apply(thisObject, cbArguments || []);
 122                 }finally{
 123                         dojo.doc = ret.doc = oldDoc;
 124                         dojo.isQuirks = has.add("quirks", oldQ, true, true);
 125                         dojo.isIE = has.add("ie", oldIE, true, true);
 126                 }
 127         }
 128 };
 129
 130  1  && lang.mixin(dojo, ret);
 131
 132 return ret;
 133
 134 });