/*****
*
*   Button.js
*
*   Copyright 2001, Kevin Lindsey
*
*****/

/*****
*
*   globals
*
*****/
Button.VERSION = 1.0;
Button.buttons = new Array();


/*****
*
*   constructor
*
*****/
function Button(x, y, callback, up_id, down_id, parent) {
    this.x        = x;
    this.y        = y;
    this.callback = callback;
    this.parent   = parent;
    this.selected = false;
    this.up       = null;
    this.down     = null;
    
    this.make_button(up_id, down_id);
    Button.buttons[Button.buttons.length] = this;
}


/*****
*
*   make_button
*
*****/
Button.prototype.make_button = function(up_id, down_id) {
    var trans  = "translate(" + this.x + "," + this.y + ")";
    var button;

    button = svgDocument.getElementById(up_id).cloneNode(true);
    button.setAttributeNS(null, "transform", trans);
    button.addEventListener("mousedown", this, false);
    this.up = button;
    
    button = svgDocument.getElementById(down_id).cloneNode(true); 
    button.setAttributeNS(null, "transform", trans);
    button.setAttributeNS(null, "display", "none");
    button.addEventListener("mousedown", this, false);
    this.down = button;

    this.parent.appendChild( this.up );
    this.parent.appendChild( this.down );
}


/*****
*
*   set_select
*
*****/
Button.prototype.set_select = function(state) {
    var current = this.selected;

    if ( current != state ) {
        if ( state == true ) {
            this.up.setAttributeNS(null, "display", "none");
            this.down.setAttributeNS(null, "display", "inline");
        } else {
            this.up.setAttributeNS(null, "display", "inline");
            this.down.setAttributeNS(null, "display", "none");
        }
        this.selected = state;
    }
}


/*****
*
*   handleEvent
*
*****/
Button.prototype.handleEvent = function(e) {

  
    var type = e.type;

    if ( this[type] != null ) this[type](e);
};


/*****
*
*   mousedown
*
*****/
Button.prototype.mousedown = function(e) {
    if ( this.callback ) this.callback(this);
};

/*****
 *
 *   unload
 *
 *****/
Button.prototype.unload = function() {
    this.down.removeEventListener("mousedown", this, false);
    this.up.removeEventListener("mousedown", this, false);
}


/*****
 *
 *  Radio.js
 *
 *****/





/*****
 *
 *   constructeur
 *
 *****/
function Radio(x, y, size, callback, up_id, down_id, parent) {
  this.x=x;
  this.y=y;
  this.size=size;
  this.callback=callback;
  this.up_id=up_id;
  this.down_id=down_id;
  this.parent=parent;
  this.current=null;
}

/*****
 *
 * addButton
 *
 *****/
Radio.prototype.add = function(label, id) { 

  var button = new Button(this.x,
			  this.y,
			  this.select,
			  this.up_id,
			  this.down_id,
			  this.parent);
  if (this.selected==null) { 
    this.current=button;
    button.set_select(true); 
    this.callback(id);
  }

    alert(this.current);

  button.id=id;
  var data = svgDocument.createTextNode(label);

  var text = svgDocument.createElementNS(svgns, "text");
  text.setAttributeNS(null, "x", this.x+this.size);
  text.setAttributeNS(null, "y", this.y);
  text.setAttributeNS(null, "fill", "black");
  text.appendChild(data);
  svgDocument.documentElement.appendChild(text);
  
  this.y += this.size;
  
  
}


Radio.prototype.select = function(button) {
  alert(this.current);
  this.current.set_select(false);
  button.set_select(true);
  this.current=button;
  this.callback(button.id);
}