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
  30         JsHttpRequest.query(
  31             'POST '+url, // backend
  32                 values,
  33             // Function is called when an answer arrives.
  34             function(result, errors) {
  35                 // Write the answer.
  36                 if (result) {
  37                           for(var i in result ) {
  38                           atom = result[i];
  39                           cmd = atom['n'];
  40                           property = atom['p'];
  41                           type = atom['c'];
  42                           id = atom['t'];
  43                           data = atom['data'];
  44 //                              debug(cmd+':'+property+':'+type+':'+id);
  45                         // seek element by id if there is no elemnt with given name
  46                           objElement = document.getElementsByName(id)[0] || document.getElementById(id);
  47                   if(cmd=='as') {
  48                                   eval("objElement."+property+"=data;");
  49                           } else if(cmd=='up') {
  50 //                              if(!objElement) debug('No element "'+id+'"');
  51                             if (objElement.tagName == 'INPUT' || objElement.tagName == 'TEXTAREA')
  52                                   objElement.value = data;
  53                             else
  54                                   objElement.innerHTML = data; // selector, div, span etc
  55                           } else if(cmd=='di') { // disable/enable element
  56                                   objElement.disabled = data;
  57                           } else if(cmd=='fc') { // set focus
  58                                   _focus = data;
  59                           } else if(cmd=='js') {        // evaluate js code
  60                                   eval(data);
  61                           } else if(cmd=='rd') {        // client-side redirection
  62                                   window.location = data;
  63                           } else {
  64                                   errors = errors+'<br>Unknown ajax function: '+cmd;
  65                         }
  66                   }
  67
  68         // Write errors to the debug div.
  69                   document.getElementById('msgbox').innerHTML = errors;
  70
  71                   Behaviour.apply();
  72                   if (errors.length>0)
  73                         window.scrollTo(0,0);
  74                         //document.getElementById('msgbox').scrollIntoView(true);
  75           // Restore focus if we've just lost focus because of DOM element refresh
  76                   setFocus();
  77                 }
  78             },
  79             false  // do not disable caching
  80         );
  81     }
  82         // returns input field values submitted when form button 'name' is pressed
  83         //
  84         JsHttpRequest.formValues = function(inp, objForm)
  85         {
  86                 var submitObj = inp;
  87                 var q = {};
  88
  89
  90                 if (typeof(inp) == "string")
  91                         submitObj = document.getElementsByName(inp)[0];
  92                 else
  93                         submitObj = inp;
  94
  95                 objForm = objForm || (submitObj && submitObj.form);
  96
  97                 if (objForm)
  98                 {
  99                         var formElements = objForm.elements;
 100                         for( var i=0; i < formElements.length; i++)
 101                         {
 102                           var el = formElements[i];
 103                                 if (!el.name) continue;
 104                                 if (el.type )
 105                                   if(
 106                                   ((el.type == 'radio' || el.type == 'checkbox') && el.checked == false)
 107                                   || (el.type == 'submit' && (!submitObj || el.name!=submitObj.name)))
 108                                         continue;
 109                                 if (el.disabled && el.disabled == true)
 110                                         continue;
 111                                 var name = el.name;
 112                                 if (name)
 113                                 {
 114                                         if(el.type=='select-multiple')
 115                                         {
 116                                                 for (var j = 0; j < el.length; j++)
 117                                                 {
 118                                                         if (el.options[j].selected == true)
 119                                                                 q[name] = el.options[j].value;
 120                                                 }
 121                                         }
 122                                         else
 123                                         {
 124                                                 q[name] = el.value;
 125                                         }
 126                                 }
 127                         }
 128                 }
 129                 return q;
 130         }
 131 //
 132 //      User price formatting
 133 //
 134 function price_format(post, num, dec, label) {
 135         //num = num.toString().replace(/\$|\,/g,'');
 136         if(isNaN(num))
 137                 num = "0";
 138         sign = (num == (num = Math.abs(num)));
 139         if(dec<0) dec = 2;
 140         decsize = Math.pow(10, dec);
 141         num = Math.floor(num*decsize+0.50000000001);
 142         cents = num%decsize;
 143         num = Math.floor(num/decsize).toString();
 144         for( i=cents.toString().length; i<dec; i++){
 145                 cents = "0" + cents;
 146         }
 147         for (var i = 0; i < Math.floor((num.length-(1+i))/3); i++)
 148                 num = num.substring(0,num.length-(4*i+3))+user.ts+
 149                         num.substring(num.length-(4*i+3));
 150          num = ((sign)?'':'-') + num;
 151          if(dec!=0) num = num + user.ds + cents;
 152         if(label)
 153             document.getElementById(post).innerHTML = num;
 154         else
 155             document.getElementsByName(post)[0].value = num;
 156 }
 157
 158 function get_amount(doc, label) {
 159             if(label)
 160                 var val = document.getElementById(doc).innerHTML;
 161             else
 162                 var val = document.getElementsByName(doc)[0].value;
 163                 val = val.replace(new RegExp('\\'+user.ts, 'g'),'');
 164                 val = val.replace(new RegExp('\\'+user.ds, 'g'),'.');
 165                 return 1*val;
 166 }
 167
 168 function goBack() {
 169         if (window.history.length <= 1)
 170          window.close();
 171         else
 172          window.history.go(-1);
 173 }
 174
 175 function setFocus(name, byId) {
 176
 177   if(!name) {
 178         if (_focus)
 179                 name = _focus;  // last focus set in onfocus handlers
 180         else {  // no current focus -  set it from from hidden var (first page display)
 181           var cur = document.getElementsByName('_focus')[0];
 182           if(cur) name = cur.value;
 183         }
 184   }
 185   if(byId)
 186         el = document.getElementById(name);
 187   else
 188         el = document.getElementsByName(name)[0];
 189
 190   if(el && el.focus) {
 191     // The timeout is needed to prevent unpredictable behaviour on IE & Gecko.
 192     // Using tmp var prevents crash on IE5
 193
 194     var tmp = function() {el.focus(); if (el.select) el.select();};
 195         setTimeout(tmp, 0);
 196   }
 197 }