// -*- java -*-
// This file is part of Roxen WebServer. Copyright (c) 1999 - 2009, Roxen IS.

// Global variables
var isNav4 = false, isIE4 = false, isNav5 = false, isMac = false,
isMacIE50 = false, isSafari = false;
var insideWindowWidth;
var range = "";
var styleObj = "";
var incompatible_browser = false;

// Create a dummy event variable for non navigator browsers.
if(window.event + "" == "undefined")
  event = null;

if (navigator.appVersion.charAt(0) == "4") {
  if (navigator.appName == "Netscape") {
    isNav4 = true;
    insideWindowWidth = window.innerWidth;
  } else {
    if (navigator.platform == "MacPPC")
      isMac = true;
    isIE4 = true;
    range = "all.";
    styleObj = ".style";
  }
} else if(navigator.appVersion.charAt(0) == "5") {
  if (navigator.appName == "Netscape") {
    isNav5 = true;
    insideWindowWidth = window.innerWidth;
  }
}

//  MSIE 5.0 for Mac breaks FileLoader object after first use...
isMacIE50 = isMac && navigator.appVersion.match("MSIE 5.0");
isSafari = navigator.appVersion.match("AppleWebKit");


function handle_incompatible_browser()
{
  if(!incompatible_browser) {
    alert("Pupup error: Incompatible Browser. Contact Roxen Support.");
    incompatible_browser = true;
  }
}

// Convert object name string or object reference
// into a valid object reference
function getObject(obj)
{
  if (typeof obj == "string") {
    if (isNav5)
      return document.getElementById(obj);
    else
      return document.all(obj);
  }
  else
    return obj;
}

// Positioning an object at a specific pixel coordinate
function shiftTo(obj, x, y) {
  var theObj = getObject(obj);
  if (isNav4) {
    theObj.moveTo(x,y);
  } else if (isNav5) {
    theObj.style.left = x+'px';
    theObj.style.top = y+'px';
  } else {
    theObj.style.pixelLeft = x;
    theObj.style.pixelTop = y;
  }
}

// Moving an object by x and/or y pixels
function shiftBy(obj, deltaX, deltaY) {
  var theObj = getObject(obj);
  if (isNav4) {
    theObj.moveBy(deltaX, deltaY);
  } else {
    theObj.style.pixelLeft += deltaX;
    theObj.style.pixelTop += deltaY;
  }
}

// Setting the z-order of an object
function setZIndex(obj, zOrder) {
  if (isNav4) getObject(obj).zIndex = zOrder;
  else getObject(obj).style.zIndex = zOrder;
}

// Setting the background color of an object
function setBGColor(obj, color) {
  if (isNav4) {
    getObject(obj).bgColor = color;
  } else {
    getObject(obj).style.backgroundColor = color;
  }
}

// Setting the visibility of an object to visible
function show(obj) {
  if (isNav4) getObject(obj).visibility = "visible";
  else getObject(obj).style.visibility = "visible";
}

// Setting the visibility of an object to hidden
function hide(obj) {
  if (isNav4) getObject(obj).visibility = "hidden";
  else getObject(obj).style.visibility = "hidden";
}

function visible(obj) {
  theObj = getObject(obj);
  if (isNav4) return (theObj.visibility == "show");
  else return (theObj.style.visibility == "visible");
}

function hidden(obj) {
  theObj = getObject(obj);
  if (isNav4) return (theObj.visibility == "hide");
  else return (theObj.style.visibility == "hidden");
}

// Retrieving the x coordinate of a positionable object
function getObjectLeft(obj)  {
  if (isNav4) return getObject(obj).left;
  if (isNav5) return getObject(obj).offsetLeft;
  else return getObject(obj).style.pixelLeft;
}

// Retrieving the y coordinate of a positionable object
function getObjectTop(obj)  {
  if (isNav4) return getObject(obj).top;
  if (isNav5) return getObject(obj).offsetTop;
  else return getObject(obj).style.pixelTop;
}

// Retrieving the x coordinate of a non positionable object
function getRelativeObjectLeft(obj)  {
  alert(obj);
  if (isNav4) return getObject(obj).pageX;
  else return getObject(obj).offsetLeft;
}

// Retrieving the y coordinate of a non positionable object
function getRelativeObjectTop(obj)  {
  showProps(obj.offsetParent);
  if (isNav4) return getObject(obj).pageY;
  else return getObject(obj).offsetTop;
}

// Retrieving the height of a positionable object
function getObjectHeight(obj)  {
  if (isNav4) return getObject(obj).clip.height;
  else return getObject(obj).offsetHeight;
}

// Retrieving the width of a positionable object
function getObjectWidth(obj)  {
  if (isNav4) return getObject(obj).clip.width;
  else return getObject(obj).offsetWidth;
}

// Retrieving the actual top scrollposition
function getScrollTop()  {
  if (isNav4||isNav5) return window.pageYOffset;
  else return document.documentElement.scrollTop;
}

// Retrieving the actual left scrollposition
function getScrollLeft()  {
  if (isNav4||isNav5) return window.pageXOffset;
  else return document.documentElement.scrollLeft;
}

// Set the actual top scrollposition
function deltaScroll(dx, dy) {
  if (isNav4) window.scroll(getScrollLeft() + dx, getScrollTop() + dy);
  else alert('scrollVertical not implemented for IE yet.');
}

// Set the actual left scrollposition
function scrollHorizontal(h)  {
  if (isNav4) window.pageXOffset = left;
  else document.body.scrollLeft = left;
}

// Retrieving the clients viewable hight
function getClientHeight()  {
  if (document.documentElement.clientHeight)
    return document.documentElement.clientHeight;

  if (isNav4 || isNav5) {
    //  Horizontal scrollbar at the bottom that reduces vertical space?
    var adjust_bottom = 0;
    if (document.body.scrollWidth > document.body.clientWidth)
      adjust_bottom += 16;
    return innerHeight - adjust_bottom;
  }
}

// Retrieving the clients viewable width
function getClientWidth()  {
  if (document.documentElement.clientWidth)
    return document.documentElement.clientWidth;
  
  if (isNav4 || isNav5) {
    //  Vertical scrollbar at right that reduces horizontal space?
    var adjust_right = 0;
    if (document.body.scrollHeight > document.body.clientHeight)
      adjust_right += 16;
    return innerWidth - adjust_right;
  }
}

function showProps(o) {
  var result = "";
  count = 0;
  for (var i in o) {
    result += o + "." + i + "=" + o[i] + "\n";
    count++;
    if (count == 25) {
      alert(result);
      result = "";
      count = 0;
    }
  }
  alert(result);
}

function getEventX(e)
{
  if(isNav4||isNav5) {
    return e.pageX;
  }
  // IE6
  if(document.documentElement && document.documentElement.scrollLeft)
    return window.event.clientX + document.documentElement.scrollLeft;
  // IE5
  if(document.body)
    return window.event.clientX + document.body.scrollLeft;

  handle_incompatible_browser();
}

function getEventY(e)
{
  if(isNav4||isNav5) {
    return e.pageY;
  }
  // IE6
  if(document.documentElement && document.documentElement.scrollTop)
    return window.event.clientY + document.documentElement.scrollTop;
  // IE5
  if(document.body)
    return window.event.clientY + document.body.scrollTop;

  handle_incompatible_browser();
}

function getButton(e) {
  if(isNav4) {
    return e.which;
  }
  if(isIE4) {
    var b = window.event.button;
    if(b == 2) return 3;
    if(b == 4) return 2;
    return b;
  }
}

function getTarget(e)
{
  if(isNav4||isNav5){
    return e.target;
  }
  if(isIE4){
    return window.event.srcElement;
  }
}

function getRecursiveLeft(o)
{
  if(o == null)
    return 0;
  if(o.tagName == "BODY")
    return o.offsetLeft;
  return o.offsetLeft + getRecursiveLeft(o.offsetParent);
}

function getRecursiveTop(o)
{
  if(o == null)
    return 0;
  if(o.tagName == "BODY")
    return o.offsetTop;
  return o.offsetTop + getRecursiveTop(o.offsetParent);
}

function getTargetX(e)
{
  if(isNav4){
    return e.target.x;
  }
  if(isIE4){
    return getRecursiveLeft(window.event.srcElement);
  }

  if (e.target.offsetParent == null)
    // Best we can do?
    return e.pageX;
  elt = e.target;
  x = 0;
  while (elt.offsetParent != null) {
    x += elt.offsetLeft;
    elt = elt.offsetParent;
  }
  x += elt.offsetLeft;
  return x;
}

function getTargetY(e)
{
  if(isNav4){
    return e.target.y;
  }
  if(isIE4){
    return getRecursiveTop(window.event.srcElement);
  }

  if (e.target.offsetParent == null)
    // Best we can do?
    return e.pageY;
  elt = e.target;
  x = 0;
  while (elt.offsetParent != null) {
    x += elt.offsetTop;
    elt = elt.offsetParent;
  }
  x += elt.offsetTop;
  return x;
  // return e.target.offsetTop;
}

function captureMouseEvent(callback)
{
  if(isNav4)
  {
    document.captureEvents(Event.MOUSEMOVE);
    document.onMouseMove = callback;
  }
  else
    document.onmousemove = callback;
}

function releaseMouseEvent()
{
  if(isNav4)
    document.releaseEvents(Event.MOUSEMOVE);
  else
    document.onmousemove = null;
}

function retFromEvent(r)
{
  if(isIE4) window.event.returnValue=r;
  return r;
}

function setStatus(text)
{
  setTimeout("status=\""+text+"\"", 1);
}


//  Internal help function used by getFirstNode()
function _getOffsetArray(n)
{
  var offsets = new Array();
  while (n && n.nodeName != "HTML") {
    var pos = 0;
    var ch = n;
    do { ch = ch.previousSibling; pos++; } while(ch);
    offsets[offsets.length] = pos;
    n = n.parentNode;
  }
  return offsets;
}

//  Returns n1 or n2 depending on which node comes first in document order
function getFirstNode(n1, n2)
{
  if (n1 == n2) return n1;
  if (n1 == null) return n2;
  if (n2 == null) return n1;

  //  Since nodes don't have global offsets we will generate arrays
  //  containing child offsets from the root (HTML) node. These arrays
  //  will look like { 4, 2 } if the node is the 4th child of the 2nd
  //  child of the <HTML> element. By comparing these arrays backwards
  //  we can compute the relative position between the two nodes.
  var n1ofs = _getOffsetArray(n1);
  var n2ofs = _getOffsetArray(n2);
  
  i1 = n1ofs.length - 1;
  i2 = n2ofs.length - 1;
  while (i1 >= 0 && i2 >= 0) {
    if (n1ofs[i1] != n2ofs[i2]) {
      return n1ofs[i1] < n2ofs[i2] ? n1 : n2;
    }
    i1--; i2--;
  }
  return i1 < i2 ? n1 : n2;
}

//  Selects all text in the first text input field in the current page
function selectFirstInputField(focus_only)
{
  if (document.getElementsByTagName) {
    //  Locate all <input type="text"> elements and pick the first one
    var inputs = document.getElementsByTagName("input");
    var first_input = null;
    for (var i = 0; i < inputs.length; i++) {
      var inp = inputs[i];
      if ((inp.type == "text" || inp.type == "password" || inp.type == "search") &&
	  !inp.disabled && !inp.className.match('no_select')) {
	first_input = inp;
	break;
      }
    }
    
    //  Locate all <textarea> elements and pick the first one
    var textareas = document.getElementsByTagName("textarea");
    var first_textarea = null;
    for (var i = 0; i < textareas.length; i++) {
      if (!textareas[i].disabled) {
	first_textarea = textareas[i];
	break;
      }
    }
    
    //  Given both <input> and <textarea> elements, select the one which
    //  comes first in the document
    var first = getFirstNode(first_input, first_textarea);
    if (first) {
      first.focus();
      if (!focus_only)
	first.select();
    }
  }
}