[Sommaire] [Imprimer]

   1  /*
   2      DynAPI Distribution
   3      dynapi.functions.System extension    
   4  */
   5  
   6  var f = dynapi.functions;
   7  f.System = System = {}; // used by dynapi.library
   8  
   9  // System Functions ---------------------------------
  10  
  11  f.coalesce=function(){
  12      var a,i;
  13      for(i=0;arguments.length;i++){
  14          a=arguments[i];
  15          if(a!=null && a!='' && a!=undefined) return a;
  16      }
  17  }
  18  f.choose = function(index){
  19      if(isNaN(index)) return;
  20      if (arguments.length>index) return arguments[index+1];
  21  };
  22  f.cloneObject = function(src) {
  23      if(!src) return;
  24      var i,tar;
  25      if(typeof(src)!='object') return src;
  26      else {
  27          if((src.constructor+'')==(Array+'')) tar=[];
  28          else if((src.constructor+'')==(Date+'')) return src;
  29          else tar={};
  30      };
  31      for(i in src) {
  32          if(typeof(src[i])!='object') tar[i]=src[i];
  33          else tar[i]=this.cloneObject(src[i]);
  34      }
  35      return tar;
  36  };
  37  f.copyObject = function(from,to,noclone) {
  38      var i;
  39      if (to && !noclone) to=this.cloneObject(to);
  40      else if(to && noclone) to=to;
  41      else {
  42          if(typeof(from)=='object') {
  43              if((from.constructor+'')==(Array+'')) to=[];
  44              else if((from.constructor+'')==(Date+'')) return from;
  45              else to={};
  46          };
  47      }
  48      for(i in from) {
  49          if(typeof(from[i])!='object') to[i]=from[i];
  50          else to[i]=this.copyObject(from[i],to[i],true);
  51      }
  52      return to;
  53  };
  54  f.getElementById = function(id,parentLyr){
  55      if (document.all) return document.all[id];
  56      else if(document.getElementById) return document.getElementById(id);
  57      else if(document.layers){
  58          var i,nLayers,layer;
  59          parentLyr = (parentLyr)? parentLyr:document;
  60          nLayers = parentLyr.layers;
  61          for (i=0;i<nLayers;i++){
  62              layer=nLayers[i];
  63              if (layer.id == id) return layer;
  64              else if (layer.layers.length){
  65                  layer = this.getElementById(id,layer);
  66                  if (layer) return layer;
  67              }                
  68          }
  69      }
  70  };
  71  f.isNull=function(value,_default){
  72      if(value==null||value==''||value=='undefined') return _default;
  73      else return value;
  74  };
  75  f.lookUp = function(value,array){
  76      var i; if(!array) return;
  77      for(i=0;i<array.length;i++){
  78          if(value==array[i]) return i;
  79      }
  80  };
  81  f.nullIf = function(){
  82      var a,i;
  83      for(i=0;arguments.length;i++){
  84          a=arguments[i];
  85          if(a!=null && a!='' && a!=undefined) return null;
  86      }
  87  };