/*
    DynAPI Distribution
    HTMLRadioButton Class

    The DynAPI Distribution is distributed under the terms of the GNU LGPL license.

    Requires: HTMLComponent
*/

function HTMLRadioButton(css,group,value,state,title,elmName){
    this.HTMLComponent = HTMLComponent;
    this.HTMLComponent(css);

    this._group = (group||'Main');
    this._elmId = elmName||(this.id+'Radio');

    this._title = title||'';
    this._value = value||'';
    this._state = (state)? true:false;
    this._defEvtResponse = true;
};
HTMLRadioButton._groups = [];
HTMLRadioButton.incGroup = function(grp){
    if(!this._groups[grp]) this._groups[grp]=0;
    return this._groups[grp]++;
};
var p = dynapi.setPrototype('HTMLRadioButton','HTMLComponent');
// Methods
p._oldHCRBEvt = HTMLComponent.prototype._e;
p._getDSValue = function(){ // DataSource functions
    if(this.getElm()) return (this.elm.checked)? this.getValue():null;
};
p._setDSValue = function(d){
    if(d==this._value) this.setState(true);
    else this.setState(false);
};
p._e = function(evt,elm,arg){
    if(evt=='click') this._state=elm.checked;
    return this._oldHCRBEvt(evt,elm,arg);
};
p._assignElm = function(elm){
    if(!this.parent) return;
    else if(!this.parent._created) return;
    var doc=this.parent.doc;
    if(!elm) {
        if(dynapi.ua.ie) elm=doc.all[this._elmId];
        else if(dynapi.ua.dom) elm=doc.getElementById(this._elmId);
        else if(dynapi.ua.ns4){
            for(i=0;i<doc.forms.length;i++){
                elm=doc.forms[i][this._elmId];
                if(elm) break;
            }
        }
        if(!elm) return;
    }
    this.elm = (!elm.length)? elm:elm[this._index];
    this.css = (dynapi.ua.ns4)? elm:elm.style;
    this.doc = this.parent.doc;
};
p.getInnerHTML = function(){
    var evt,value=this._value||'';
    var sel = (this._state)? ' checked ':'';
    evt = this._generateInlineEvents(this);
    this._index = HTMLRadioButton.incGroup(this._group);
    return '<input type="radio" class="'+this._class+'" id="'+this._elmId+'" name="'+this._group+'" value="'+value+'" '
    +sel+evt+' title="'+this._title+'" />';
};
p.getState = function(){
    return (this.getElm())? this.elm.checked:this._state;
};
p.getValue = function() {
    return (this.getElm())? this.elm.value:this._value;
};
p.setElementName = function(t){
    if(t) this._elmId = t;
};
p.setState = function(b) {
    this._state=(b) ? true:false;
    if(this.getElm()) this.elm.checked=this._state;
};
p.setValue = function(v) {
    this._value=v||'';
    if(this.getElm()) this.elm.value=v;
};