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socialcalc/socialcalc-3.js  view on Meta::CPAN

SocialCalc.setStyles = function (element, cssText) {

   var parts, part, pos, name, value;

   if (!cssText) return;

   parts = cssText.split(";");
   for (part=0; part<parts.length; part++) {
      pos = parts[part].indexOf(":"); // find first colon (could be one in url)
      if (pos != -1) {
         name = parts[part].substring(0, pos);
         value = parts[part].substring(pos+1);
         if (name && value) { // if non-null name and value, set style
            element.style[name] = value;
            }
         }
//      namevalue = parts[part].split(":");
//      if (namevalue[0]) element.style[namevalue[0]] = namevalue[1];
      }

   }

//
// GetViewportInfo() - returns object with viewport width and height, and scroll offsets
//
// Flanagan, JavaScript, 5th Edition, page 276
//

SocialCalc.GetViewportInfo = function () {

   var result = {};

   if (window.innerWidth) { // all but IE
      result.width = window.innerWidth;
      result.height = window.innerHeight;
      result.horizontalScroll = window.pageXOffset;
      result.verticalScroll = window.pageYOffset;
      }
   else {
      if (document.documentElement && document.documentElement.clientWidth) {
         result.width = document.documentElement.clientWidth;
         result.height = document.documentElement.clientHeight;
         result.horizontalScroll = document.documentElement.scrollLeft;
         result.verticalScroll = document.documentElement.scrollTop;
         }
      else if (document.body.clientWidth) {
         result.width = document.body.clientWidth;
         result.height = document.body.clientHeight;
         result.horizontalScroll = document.body.scrollLeft;
         result.verticalScroll = document.body.scrollTop;
         }
      }

   return result;
   }

//
// GetElementPosition(element) - returns object with left and top position of the element in the document
//
// Goodman's JavaScript & DHTML Cookbook, 2nd Edition, page 415
//

SocialCalc.GetElementPosition = function (element) {

   var offsetLeft = 0;
   var offsetTop = 0;
   while (element) {
      offsetLeft+=element.offsetLeft;
      offsetTop+=element.offsetTop;
      element=element.offsetParent;
      }
   return {left:offsetLeft, top:offsetTop};

   }

//
// GetElementPositionWithScroll(element) - returns object with left and top position of the element in the document
//
// Takes into account scroll offsets by going through entire tree
//

SocialCalc.GetElementPositionWithScroll = function (element) {

   var offsetLeft = 0;
   var offsetTop = 0;
   var offsetElement = element;
   while (element) {
      if (element.tagName=="HTML") break;
      if (element == offsetElement) {
         offsetLeft+=element.offsetLeft;
         offsetTop+=element.offsetTop;
         offsetElement = element.offsetParent;
         }
      if (element.scrollLeft) {
         offsetLeft-=element.scrollLeft;
         }
      if (element.scrollTop) {
         offsetTop-=element.scrollTop;
         }
      element=element.parentNode;
      }
   return {left:offsetLeft, top:offsetTop};

   }

//
// LookupElement(element, array) - returns array element which is an object with "element" of element
//

SocialCalc.LookupElement = function (element, array) {

   var i;
   for (i=0; i<array.length; i++) {
      if (array[i].element == element) return array[i];
      }
   return null;

   }

//