methods-events-attributes-$25.lzx

<canvas height="40" width="100%">
  <button text="click me">
    <attribute name="time" setter="setTime(time)"/> 
    <attribute name="ontime" value="null"/> 

    <handler name="onclick"> 
      Debug.debug('inited: %w', this.isinited); 
      var now = (new Date()).getTime();
      this.setAttribute("time", now); 
    </handler> 

    <method name="setTime" args="t"> 
      if (!this.isinited) {                                          //catch the case where this.time is being 
        this.time = t;                                               //initialized during object instantiation
        return;
      } 

      if (typeof this.time == "undefined" || this.time == null) {    //handle first set of time
        this.setAttribute("text", "first click registered");
      } 
      else {
        var diff = t - this.time;                                    //handle any additional setting of time
        this.setAttribute("text", diff + " milliseconds between clicks");             
      } 
      this.time = t;                                                 //as this is the declared setter for 
                                                                     //this.time, we have to set it

      if (ontime)                                                    //required to update constraints and 
        this.ontime.sendEvent();                                     //fire ontime event 
    </method> 
  </button> 
</canvas>
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