/**
* common functions/classes
*
* @package Application
* @author Vallo Reima
* @copyright (C)2013
*/
function Forms(fid)
/*
* form fields processing class
* in: fid - form id
*/
{
var fields = {}; /* field properties */
var that = this;
/* constructor */
that.Init = function(flds) {
var dfe = $(fid).elements;
for (var i = 0; i < dfe.length; i++) {
var id = dfe[i].id;
if (id) {
fields[id] = {
obj: dfe[i],
tpe: dfe[i].type.toLowerCase(),
err: '',
val: dfe[i].value
};
var lbl = $('l_' + id);
if (lbl) {
fields[id].lbl = lbl;
}
if (IsSet(flds[id])) {
fields[id].fnc = flds[id];
}
}
}
Events(true);
};
that.Term = function() {
Events(false);
};
Events = function(flg) {
var fnc = flg ? AttachEventListener : DetachEventListener;
for (var id in fields) {
if (fields[id].tpe === 'button') {
var evt = 'click';
} else if (fields[id].tpe !== 'hidden') {
evt = 'change';
} else {
evt = '';
}
if (evt !== '') {
fnc(fields[id].obj, evt, GetEvent);
}
}
};
that.Gets = function() {
return fields;
};
that.Get = function(id) {
return fields[id].val;
};
that.Set = function(id, val) {
SetValue(id, val);
};
that.SetError = function(id, flg) {
fields[id].err = flg ? flg : '';
ErrFlag(id, flg);
};
that.Enable = function(flg)
/*
* enable/disable form element
* in: flg -- true - enable
*/
{
for (var c in fields) {
EnaDisa(fields[c].obj, flg);
}
};
var EnaDisa = function(obj, flg)
/*
* enable/disable form element
* in: obj -- element object
* flg -- true - enable
*/
{
if (flg === true) {
obj.removeAttribute('disabled');
obj.disabled = false;
} else {
obj.setAttribute('disabled', 'disabled');
obj.disabled = true;
}
};
var GetEvent = function(event)
/*
* process field chage/click
* in: event object
*/
{
var trg = Target(event);
if (trg.tagName.toLowerCase() === 'img') {
trg = trg.parentNode; /* Chrome, Safari */
}
var id = trg.id;
if (fields[id].tpe !== 'button') {
SetValue(id);
}
if (fields[id].lbl) {
ErrFlag(id);
}
if (fields[id].fnc) {
fields[id].fnc(id);
}
StopEvent(event);
};
var SetValue = function(id, val)
/*
* Setting field value
* in: id - field id
* val - value (if not set, take from obj)
*/
{
if (fields[id].tpe.indexOf('select') + 1) {
var c = IsSet(val) ? val : fields[id].obj.options[fields[id].obj.selectedIndex].value;
var k = -1;
fields[id].idx = -1;
for (var i = 0; i < fields[id].obj.options.length; i++) {
if (fields[id].obj.options[i].value === c) {
fields[id].idx = i;
fields[id].obj.options[i].setAttribute('selected', 'selected');
} else if (fields[id].obj.options[i].value === fields[id].val) {
fields[id].obj.options[i].removeAttribute('selected');
}
if (fields[id].obj.options[i].value === '') {
k = i;
}
}
if (fields[id].idx === -1) {
c = '';
fields[id].idx = k === -1 ? 0 : k;
}
fields[id].obj.selectedIndex = 0; /* FF mess */
fields[id].obj.selectedIndex = fields[id].idx;
/* setTimeout(function(){
fields[id].obj.selectedIndex = fields[id].idx;
},100); */
fields[id].val = c;
fields[id].txt = fields[id].obj.options[fields[id].idx].text;
} else if (fields[id].tpe !== 'button') {
fields[id].val = Trim(IsSet(val) ? val + '' : fields[id].obj.value);
if (IsBlank(fields[id].val)) {
fields[id].val = '';
}
fields[id].obj.setAttribute('value', fields[id].val);
fields[id].obj.value = fields[id].val;
}
};
var ErrFlag = function(id, flg)
/* set field error flag
* in: id - field id
* flg -- empty - ok
* else error
*/
{
if (fields[id].lbl) {
if (Empty(flg)) {
fields[id].lbl.style.color = '';
} else {
fields[id].lbl.style.color = 'red';
}
}
};
}
function NormName(nme)
/*
* normalise person name
* in: nme - name entered
* out: normalized
*/ {
var c = '';
if (!IsBlank(nme)) {
var s = nme.indexOf('-') + 1 ? '-' : ' ';
var a = Trim(nme).split(s);
for (var i = 0; i < a.length; i++) {
c += s + ucfirst(a[i].toLowerCase());
}
c = c.substr(1);
}
return c;
}
function XHRJSON(url, par, ops)
/*
* read data thru XHR
* in: url -- request URL
* par -- parameters object
* ops -- fnc - callback
* mid - meters id
* out: null -- error
* array - response
*/
{
var obj = GetHTTPObject();
var Response = function() {
if (obj.status === 200 || obj.status === 304) {
var rlt = obj.responseText;
try {
var r = JSON.parse(rlt);
} catch (e) {
if (Empty(rlt)) {
r = null;
} else {
document.body.innerHTML = rlt;
}
}
return r;
}
};
var dts = '';
var MeterOn = function() {
dts += '.';
if (dts.length > 3) {
dts = '';
}
ops.mtr.innerHTML = ops.txt + Pad(dts, 3, ' ');
};
var MeterOff = function() {
clearInterval(mtr);
ops.mtr.innerHTML = '';
};
var mtr = setInterval(MeterOn, 200);
if (ops.asn) {
obj.onreadystatechange = function() {
if (obj.readyState === 4) {
MeterOff();
ops.fnc(Response(), par);
}
};
}
obj.open('POST', url, ops.asn);
obj.setRequestHeader("Content-Type", "application/json");
obj.send(JSON.stringify(par));
if (!ops.asn) {
MeterOff();
return Response();
}
}
|
Download
