Source Code

for file /controls/VBarChart.js

// PropBarChart.js
// Javascript Behavior for the VBarChart Control
// Copyright (c) by Matthias Hertel, http://www.mathertel.de
// This work is licensed under a BSD style license. See http://www.mathertel.de/License.aspx
// ----- 
// 09/17/2005 14:05:26 created by Matthias Hertel
// 25.08.2007 created from PropBarChartBehaviour
// 18.12.2007 Simplifications and documentation.

var VBarChartBehavior = {

  // ----- Attributes -----
  eventname: "", /// <summary>The local or complete event name that is used for publishing OpenAjax events.</summary>
  maxvalue: 100, // maximal value of the event data

  init: function () {
    // register for a event-value if the propname attribute is set.
    if ((this.eventname != null) && (this.eventname != "")) {
      // retrieve complete event name
      if (this.eventname.indexOf('.') < 0) {
        var formElem = jcl.FindBehaviourElement(this, DataFormBehavior);
        if ((formElem != null) && (formElem.eventnamespace != null))
          this.eventname = formElem.eventnamespace + "." + this.eventname;
      } // if
      OpenAjax.hub.subscribe(this.eventname, this.handleEvent, this);
    } // if
  }, // init

  handleEvent: function (eventName, eventData) {
    eventData = eventData * 100 / this.maxvalue;
    eventData = Math.min(100, Math.max(0, Math.round(eventData)));
    this.style.height = eventData + "px";
  }, // handleEvent

  // ----- Methods -----
  GetValue: function (propName, propValue) {
    if (this.properties.indexOf(";" + propName.toLowerCase() + ";") >= 0) {
      propValue = propValue * 100 / this.maxvalue;
      propValue = Math.min(100, Math.max(0, Math.round(propValue)));
      var bar = document.getElementById("barchart_" + propName);
      bar.style.height = propValue + "px";
    } // if
  } // GetValue

}; // VBarChartBehavior

This page is part of the http://www.mathertel.de/ web site.

For updates and discussions see http://ajaxaspects.blogspot.com/.