js/utils.js

   1 //
   2 //      JsHttpRequest class extensions.
   3 //
   4 // Main functions for asynchronus form submitions
   5 //      Trigger is the source of request and can have following forms:
   6 //      - input object - all form values are also submited
   7 //  - arbitrary string - POST var trigger with value 1 is added to request;
   8 //              if form parameter exists also form values are submited, otherwise
   9 //              request is directed to current location
  10 //
  11     JsHttpRequest.request= function(trigger, form) {
  12
  13
  14                 var submitObj = typeof(trigger) == "string" ?
  15                         document.getElementsByName(trigger)[0] : trigger;
  16
  17                 form = form || (submitObj && submitObj.form);
  18
  19                 var url = form ? form.action :
  20                   window.location.toString();
  21
  22                 if (!form) url = url.substring(0, url.indexOf('?'));
  23
  24                 var values = this.formValues(trigger, form);
  25                 if (!submitObj)
  26                         values[trigger] = 1;
  27                 // this is to avoid caching problems
  28                 values['_random'] = Math.random()*1234567;
  29         JsHttpRequest.query(
  30             'POST '+url, // backend
  31                 values,
  32             // Function is called when an answer arrives.
  33             function(result, errors) {
  34                 // Write the answer.
  35                 if (result) {
  36                           for(var i in result ) {
  37                           atom = result[i];
  38                           cmd = atom['n'];
  39                           property = atom['p'];
  40                           type = atom['c'];
  41                           id = atom['t'];
  42                           data = atom['data'];
  43 //                              debug(cmd+':'+property+':'+type+':'+id);
  44                         // seek element by id if there is no elemnt with given name
  45                           objElement = document.getElementsByName(id)[0] || document.getElementById(id);
  46                   if(cmd=='as') {
  47                                   eval("objElement.setAttribute('"+property+"',"+data+");");
  48                           } else if(cmd=='up') {
  49 //                              if(!objElement) debug('No element "'+id+'"');
  50                             if (objElement.tagName == 'INPUT' || objElement.tagName == 'TEXTAREA')
  51                                   objElement.value = data;
  52                             else
  53                                   objElement.innerHTML = data; // selector, div, span etc
  54                           } else if(cmd=='di') { // disable/enable element
  55                                   objElement.disabled = data;
  56                           } else if(cmd=='fc') { // set focus
  57                                   _focus = data;
  58                           } else if(cmd=='js') {        // evaluate js code
  59                                   eval(data);
  60                           } else if(cmd=='rd') {        // client-side redirection
  61                                   window.location = data;
  62                           } else {
  63                                   errors = errors+'<br>Unknown ajax function: '+cmd;
  64                         }
  65                   }
  66
  67         // Write errors to the debug div.
  68                   document.getElementById('msgbox').innerHTML = errors;
  69
  70                   Behaviour.apply();
  71                   if (errors.length>0)
  72                         window.scrollTo(0,0);
  73                         //document.getElementById('msgbox').scrollIntoView(true);
  74           // Restore focus if we've just lost focus because of DOM element refresh
  75                   setFocus();
  76                 }
  77             },
  78             false  // do not disable caching
  79         );
  80     }
  81         // returns input field values submitted when form button 'name' is pressed
  82         //
  83         JsHttpRequest.formValues = function(inp, objForm)
  84         {
  85                 var submitObj = inp;
  86                 var q = {};
  87
  88
  89                 if (typeof(inp) == "string")
  90                         submitObj = document.getElementsByName(inp)[0];
  91                 else
  92                         submitObj = inp;
  93
  94                 objForm = objForm || (submitObj && submitObj.form);
  95
  96                 if (objForm)
  97                 {
  98                         var formElements = objForm.elements;
  99                         for( var i=0; i < formElements.length; i++)
 100                         {
 101                           var el = formElements[i];
 102                                 if (!el.name) continue;
 103                                 if (el.type )
 104                                   if(
 105                                   ((el.type == 'radio' || el.type == 'checkbox') && el.checked == false)
 106                                   || (el.type == 'submit' && (!submitObj || el.name!=submitObj.name)))
 107                                         continue;
 108                                 if (el.disabled && el.disabled == true)
 109                                         continue;
 110                                 var name = el.name;
 111                                 if (name)
 112                                 {
 113                                         if(el.type=='select-multiple')
 114                                         {
 115                                                 for (var j = 0; j < el.length; j++)
 116                                                 {
 117                                                         if (el.options[j].selected == true)
 118                                                                 q[name] = el.options[j].value;
 119                                                 }
 120                                         }
 121                                         else
 122                                         {
 123                                                 q[name] = el.value;
 124                                         }
 125                                 }
 126                         }
 127                 }
 128                 return q;
 129         }
 130 //
 131 //      User price formatting
 132 //
 133 function price_format(post, num, dec, label) {
 134         //num = num.toString().replace(/\$|\,/g,'');
 135         if(isNaN(num))
 136                 num = "0";
 137         sign = (num == (num = Math.abs(num)));
 138         if(dec<0) dec = 2;
 139         decsize = Math.pow(10, dec);
 140         num = Math.floor(num*decsize+0.50000000001);
 141         cents = num%decsize;
 142         num = Math.floor(num/decsize).toString();
 143         for( i=cents.toString().length; i<dec; i++){
 144                 cents = "0" + cents;
 145         }
 146         for (var i = 0; i < Math.floor((num.length-(1+i))/3); i++)
 147                 num = num.substring(0,num.length-(4*i+3))+user.ts+
 148                         num.substring(num.length-(4*i+3));
 149          num = ((sign)?'':'-') + num;
 150          if(dec!=0) num = num + user.ds + cents;
 151         if(label)
 152             document.getElementById(post).innerHTML = num;
 153         else
 154             document.getElementsByName(post)[0].value = num;
 155 }
 156
 157 function get_amount(doc, label) {
 158             if(label)
 159                 var val = document.getElementById(doc).innerHTML;
 160             else
 161                 var val = document.getElementsByName(doc)[0].value;
 162                 val = val.replace(new RegExp('\\'+user.ts, 'g'),'');
 163                 val = val.replace(new RegExp('\\'+user.ds, 'g'),'.');
 164                 return 1*val;
 165 }
 166
 167 function goBack() {
 168         if (window.history.length <= 1)
 169          window.close();
 170         else
 171          window.history.go(-1);
 172 }
 173
 174 function setFocus(name, byId) {
 175
 176   if(!name) {
 177         if (_focus)
 178                 name = _focus;  // last focus set in onfocus handlers
 179         else {  // no current focus -  set it from from hidden var (first page display)
 180           var cur = document.getElementsByName('_focus')[0];
 181           if(cur) name = cur.value;
 182         }
 183   }
 184   if(byId)
 185         el = document.getElementById(name);
 186   else
 187         el = document.getElementsByName(name)[0];
 188
 189   if(el && el.focus) {
 190     // The timeout is needed to prevent unpredictable behaviour on IE & Gecko.
 191     // Using tmp var prevents crash on IE5
 192
 193     var tmp = function() {el.focus(); if (el.select) el.select();};
 194         setTimeout(tmp, 0);
 195   }
 196 }