/* Copyright (C) 2005 - 2008 rubicon informationstechnologie gmbh
 *
 * This program is free software: you can redistribute it and/or modify it under 
 * the terms of the re:motion license agreement in license.txt. If you did not 
 * receive it, please visit http://www.re-motion.org/licensing.
 * 
 * Unless otherwise provided, this software is distributed on an "AS IS" basis, 
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. 
 */

var _dropDownMenu_menuInfos = new Object();

var _dropDownMenu_headClassName = 'dropDownMenuHead';
var _dropDownMenu_headFocusClassName = 'dropDownMenuHeadFocus';
var _dropDownMenu_popUpClassName = 'dropDownMenuPopUp';
var _dropDownMenu_itemClassName = 'dropDownMenuItem';
var _dropDownMenu_itemFocusClassName = 'dropDownMenuItemFocus';
var _dropDownMenu_itemDisabledClassName = 'dropDownMenuItemDisabled';
var _dropDownMenu_itemTextPaneClassName = 'dropDownMenuItemTextPane';
var _dropDownMenu_itemIconPaneClassName = 'dropDownMenuItemIconPane';
var _dropDownMenu_itemSeparatorClassName = 'dropDownMenuTextPaneSeparator';
var _dropDownMenu_currentMenu = null;
var _dropDownMenu_currentPopUp = null;
var _dropDownMenu_currentPopUpWidth = null;

var _dropDownMenu_styleSheetLink = null;
var _dropDownMenu_menuItemIDPrefix = 'menuItem_';
var _dropDownMenu_currentItem = null;

var _dropDownMenu_requiredSelectionAny = 0;
var _dropDownMenu_requiredSelectionExactlyOne = 1;
var _dropDownMenu_requiredSelectionOneOrMore = 2;

var _dropDownMenu_isHeadControlClick = false;

var _itemMouseOverHandler = null;
var _itemMouseLeaveHandler = null;
var _itemClickHandler = null;

function DropDownMenu_InitializeGlobals (styleSheetLink)
{
  _dropDownMenu_styleSheetLink = styleSheetLink;
}

function DropDownMenu_MenuInfo (id, itemInfos)
{
  this.ID = id;
  this.ItemInfos = itemInfos;
}

function DropDownMenu_AddMenuInfo (menuInfo)
{
  _dropDownMenu_menuInfos[menuInfo.ID] = menuInfo;
}

function DropDownMenu_ItemInfo (id, category, text, icon, iconDisabled, requiredSelection, isDisabled, href, target)
{
  this.ID = id;
  this.Category = category;
  this.Text = text;
  this.Icon = icon;
  this.IconDisabled = iconDisabled;
  this.RequiredSelection = requiredSelection;
  this.IsDisabled = isDisabled;
  this.Href = href;
  this.Target = target;
}

function DropDownMenu_OnClick (context, menuID, getSelectionCount, evt)
{
  var id = context.id + '_PopUp';
  if (context != _dropDownMenu_currentMenu)
    DropDownMenu_ClosePopUp ();
  if (_dropDownMenu_isHeadControlClick)
  {
    _dropDownMenu_isHeadControlClick = false;
  }
  else
  {
    _dropDownMenu_currentPopUp = DropDownMenu_OpenPopUp (id, menuID, context, getSelectionCount, evt);
    _dropDownMenu_currentMenu = context;
  }
}

function DropDownMenu_SetSelectionCount (count)
{
}

function DropDownMenu_OpenPopUp (id, menuID, context, getSelectionCount, evt)
{
  var itemInfos = _dropDownMenu_menuInfos[menuID].ItemInfos;
  var selectionCount = -1;
  if (getSelectionCount != null)
    selectionCount = getSelectionCount();
  //  Create a temporary popup for calculating the size
  var tempPopUp = window.document.createElement("div");
  tempPopUp.className = _dropDownMenu_popUpClassName;
  
  for (var i = 0; i < itemInfos.length; i++)
  {
    var item = DropDownMenu_CreateItem (window.document, itemInfos[i], selectionCount, false);
    if(item != null)
      tempPopUp.appendChild (item);
  }
  
  var tempPopUpWindow = window.document.createElement("div");
  tempPopUpWindow.style.position = 'absolute';
  tempPopUpWindow.style.left = 0;
  tempPopUpWindow.style.top = 0;
  tempPopUpWindow.appendChild (tempPopUp);
  window.document.body.appendChild (tempPopUpWindow);
  var popUpWidth  = tempPopUp.offsetWidth + tempPopUp.offsetLeft;
  var popUpHeight = tempPopUp.offsetHeight + tempPopUp.offsetTop;
  window.document.body.removeChild (tempPopUpWindow);
  tempPopUpWindow = null;
  tempPopUp = null;
  
  //  IE55up
  popUpWindow = window.createPopup();
  var popUpDocument = popUpWindow.document;
  var popUpBody = popUpWindow.document.body

  var popUpStyleSheet = popUpDocument.createStyleSheet();
  for (var idxStyleSheets = 0; idxStyleSheets < window.document.styleSheets.length; idxStyleSheets++)
  {
    styleSheet = window.document.styleSheets[idxStyleSheets];
    if (styleSheet.href != '')
    {
      popUpDocument.createStyleSheet (styleSheet.href);  
    }
    else
    {
      for (var idxRules = 0; idxRules < styleSheet.rules.length; idxRules++)
      {
        var rule = styleSheet.rules[idxRules];
        var isBody = rule.selectorText.toLowerCase() == 'body';
        if (isBody)
        {
          cssText = rule.style.cssText;
          if (cssText != null && cssText != '')
            popUpStyleSheet.addRule (rule.selectorText, cssText);
        }
      }
    }
  }
    

  _itemMouseOverHandler = function () { DropDownMenu_SelectItem (this); };
  _itemMouseLeaveHandler = function () { DropDownMenu_UnselectItem (this); };
  _itemClickHandler = function ()
  { 
    DropDownMenu_ClosePopUp();
    try
    {
      eval (this.getAttribute ('javascript')); 
    }
    catch (e)
    {
    }
  };

  var popUp = popUpDocument.createElement("div");
  if(id != null)
    popUp.id = id;
  popUp.className = _dropDownMenu_popUpClassName;
  var itemInfos = _dropDownMenu_menuInfos[menuID].ItemInfos;
  for (var i = 0; i < itemInfos.length; i++)
  {
    var item = DropDownMenu_CreateItem (popUpDocument, itemInfos[i], selectionCount, true);
    if(item != null)
      popUp.appendChild (item);
  }
  popUpBody.appendChild (popUp);
  //  Brower Switch
  //  Css2.1
  //  DropDownMenu_AppendChild (document.body, popUp);
  //  _dropDownMenu_currentPopUpWidth = popUp.offsetWidth;
  //  DropDownMenu_RepositionPopUp ();
  //  window.onresize = DropDownMenu_RepositionPopUp;
  
  popUpBody.oncontextmenu = kfnDisableEvent;
  popUpBody.ondragstart = kfnDisableEvent;
  popUpBody.onselectstart = kfnDisableEvent;
  popUpBody.onkeydown = PopupKeyDown;
  popUpBody.onmouseup = PopupMouseUp;
  popUpBody.onmouseover = PopupMouseOver;
  popUpBody.onmouseleave = PopupMouseLeave;
  
  var left = 0;
  if (evt != null)
    left = evt.clientX;
  else
    left = context.offsetWidth - popUpWidth;

  var top = 0;
  if (evt != null)
    top = evt.clientY;
  else
    top = context.offsetHeight - 1; 
  
  var parentElement = (evt != null) ? document.body : context;
  popUpWindow.show(left, top, popUpWidth, popUpHeight, parentElement);

  _oContents = _dropDownMenu_currentPopUp;
  _oRoot = _oContents;
  _arrSelected[_nLevel] = null;
  _wzPrefixID = popUp.uniqueID;
  
  //context.onblur = function () {window.status = 'blur';}
  //popUpWindow.document.body.onload = function (){window.status =  new Date().valueOf();};
  //popUpWindow.document.body.onunload = DropDownMenu_ClosePopUpEvent;
  return popUpWindow;
}

function DropDownMenu_OpenPopUpEvent()
{
  var popUp=event.srcElement;
  if(!popUp.isOpen())
    popUp.show (_dropDownMenu_currentMenu, null, null, -1);
}

function DropDownMenu_RepositionPopUp()
{
  var top = 0 + _dropDownMenu_currentMenu.offsetHeight;
  var left = 0 + _dropDownMenu_currentMenu.offsetWidth;
  //  Calculate the offset of the div in respect to the left top corner of the page.
  for (var currentNode = _dropDownMenu_currentMenu; 
      currentNode && (currentNode.tagName != 'BODY'); 
      currentNode = currentNode.offsetParent)
  {
    left += currentNode.offsetLeft;
    top += currentNode.offsetTop;
  }
  
  _dropDownMenu_currentPopUp.style.top = top + 'px';
  _dropDownMenu_currentPopUp.style.left = (left - _dropDownMenu_currentPopUpWidth) + 'px';
}

function DropDownMenu_ClosePopUpEvent()
{
  DropDownMenu_ClosePopUp();
}

function DropDownMenu_ClosePopUp()
{
  if (_dropDownMenu_currentPopUp != null)
  {
    _dropDownMenu_currentPopUp.hide();
    var popUpBody = _dropDownMenu_currentPopUp.document.body;
    popUpBody.oncontextmenu = null;
    popUpBody.ondragstart = null;
    popUpBody.onselectstart = null;
    popUpBody.onkeydown = null;
    popUpBody.onmouseup = null;
    popUpBody.onmouseover = null;
    popUpBody.onmouseleave = null;
  }
  _dropDownMenu_currentPopUp = null;
  if (_dropDownMenu_currentMenu != null)
    DropDownMenu_OnHeadMouseOut (_dropDownMenu_currentMenu.children[0]);
  _dropDownMenu_currentMenu = null;
  _dropDownMenu_currentItem = null;
  _itemMouseOverHandler = null;
  _itemMouseLeaveHandler = null;
  _itemClickHandler = null;
}

function DropDownMenu_CreateItem (popUpDocument, itemInfo, selectionCount, showExpandSeparators)
{
  if (itemInfo == null)
    return null;
  var item = popUpDocument.createElement ('div');

  if (itemInfo.Text == '-')
    DropDownMenu_CreateSeparatorItem (popUpDocument, item, showExpandSeparators);
   else
    DropDownMenu_CreateTextItem (popUpDocument, item, itemInfo, selectionCount);
    
  return item;
}

function DropDownMenu_CreateTextItem (popUpDocument, item, itemInfo, selectionCount)
{
  var isEnabled = true;
  
  if (itemInfo.IsDisabled)
  {
    isEnabled = false;
  }
  else
  {
    if (   itemInfo.RequiredSelection == _dropDownMenu_requiredSelectionExactlyOne
        && selectionCount != 1)
    {
      isEnabled = false;
    }
    if (   itemInfo.RequiredSelection == _dropDownMenu_requiredSelectionOneOrMore
        && selectionCount < 1)
    {
      isEnabled = false;
    }
  }
  
  item.id = itemInfo.ID;
  
  if (isEnabled)
    item.className = _dropDownMenu_itemClassName;
  else
    item.className = _dropDownMenu_itemDisabledClassName;
    
  if (isEnabled && itemInfo.Href != null)
  {
    var isJavaScript = itemInfo.Href.toLowerCase().indexOf ('javascript:') >= 0;
    if (isJavaScript)
    {
      item.setAttribute ('javascript', itemInfo.Href);
    }
    else
    {
      var href = itemInfo.Href;
      var target;
      if (itemInfo.Target != null && itemInfo.Target.length > 0)
        target = itemInfo.Target;
      else
        target = '_self';
      item.setAttribute ('javascript', 'window.open (\'' + href + '\', \'' + target + '\');');
      //item.setAttribute ('javascript', 'window.location = \'' + itemInfo.Href + '\';');
    }
    item.onclick = _itemClickHandler;
  }
  
  var iconPane = popUpDocument.createElement ('span');
  iconPane.className = _dropDownMenu_itemIconPaneClassName;
  if (itemInfo.Icon != null)
  {
    var icon = popUpDocument.createElement ('img');
    if (isEnabled || itemInfo.IconDisabled == null)
      icon.src = itemInfo.Icon;
    else
      icon.src = itemInfo.IconDisabled;
    icon.style.verticalAlign = 'middle';
    iconPane.appendChild (icon);
  }
  item.appendChild (iconPane);

  var textPane = popUpDocument.createElement ('span');
  textPane.className = _dropDownMenu_itemTextPaneClassName;  
  if (itemInfo.Text != null)
    textPane.innerHTML = itemInfo.Text;
  else
    textPane.innerHTML = '&nbsp;';
  item.appendChild (textPane);

  if (isEnabled)
  {
    item.onmouseover = _itemMouseOverHandler;
    item.onmouseleave = _itemMouseLeaveHandler;
  }
}

function DropDownMenu_CreateSeparatorItem (popUpDocument, item, showExpandSeparators)
{
  var textPane = popUpDocument.createElement ('span');
  textPane.className = _dropDownMenu_itemSeparatorClassName;
  textPane.innerHTML = '&nbsp;';
  if (showExpandSeparators)
    textPane.style.width = '100%';
  else
    textPane.style.width = '5px';
  item.appendChild (textPane);
}

function DropDownMenu_SelectItem (menuItem)
{
  if (menuItem == null)
    return;
  menuItem.className = _dropDownMenu_itemFocusClassName;
  _dropDownMenu_currentItem = menuItem;
}

function DropDownMenu_UnselectItem (menuItem)
{
  if (menuItem == null)
    return;
  menuItem.className = _dropDownMenu_itemClassName;
  _dropDownMenu_currentItem = null;
}

function DropDownMenu_OnHeadMouseOver (head)
{
  return;
  
  if (_dropDownMenu_currentPopUp == null)
    head.className = _dropDownMenu_headFocusClassName;
}

function DropDownMenu_OnHeadMouseOut (head)
{
  return;
  
  if (_dropDownMenu_currentPopUp == null)
    head.className = _dropDownMenu_headClassName;
}

//  Event handler for the click on the head control.
//  Sets the _dropDownMenu_isHeadControlClick flag.
function DropDownMenu_OnHeadControlClick()
{
  _dropDownMenu_isHeadControlClick = true;
}

/* copy and pasted, contains stuff for the popUpBody event handlers. */
var kfnDisableEvent = new Function("return false");
var _nLevel = 0;
var _oContents;            
var _oRoot;
var _arrSelected = new Array();
var _wzPrefixID;    

function HideMenu()
{
  if (IsOpen()) _dropDownMenu_currentPopUp.hide();
}

function IsOpen()
{
  var oPopup = _dropDownMenu_currentPopUp;
  return oPopup && oPopup.isOpen;
}

function GetEventFromLevel(nLevel)
{
  if (nLevel >= 0 && nLevel <= _nLevel)
    {
    var oPopup = _dropDownMenu_currentPopUp;
    if (oPopup) return oPopup.document.parentWindow.event;
    }
  return null;  
}
function GetEventLevel()
{
  for (var nIndex = _nLevel; nIndex >= 0; nIndex--)
    if (GetEventFromLevel(nIndex)) return nIndex;
  return -1;
}
function UpdateLevel(nLevel)
{
  var oPopup;
  while (_nLevel > nLevel)
    {
    oPopup = _dropDownMenu_currentPopUp;
    if (oPopup)
      {
      ClearShowSubMenuEvnt();
      oPopup.hide();
      }
    _dropDownMenu_currentPopUp = null;
    _arrSelected[_nLevel] = null;
    _oRoot = _oRoot.parentNode;
    _nLevel--;
    }
  oPopup = _dropDownMenu_currentPopUp;
  if (oPopup) ClearShowSubMenuEvnt();
}

function ClearShowSubMenuEvnt()
{
return;
  var oPopup = _arrPopup[_nLevel];
  var oWnd = _nLevel == 0 ? window : _arrPopup[_nLevel - 1].document.parentWindow;
  if (oPopup && oWnd)
    {
    var oPopupBody = oPopup.document.body;
    var id = oPopupBody.getAttribute("timeoutID");
    if (typeof(id)=="number")
      {
      oWnd.clearTimeout(id);
      }
    oPopupBody.removeAttribute("timeoutID");
    }
}
function GetEventSrcItem(oEvent)
{
  if (oEvent)
  {
    for (var oSrc = oEvent.srcElement; oSrc && !FIStringEquals(oSrc.tagName, "BODY"); oSrc = oSrc.parentNode)
    {
      if (   FIStringEquals(oSrc.tagName, "DIV") 
          && oSrc.id.substring(0, _dropDownMenu_menuItemIDPrefix.length) == _dropDownMenu_menuItemIDPrefix) 
      {
        return oSrc;
      }
    }
  }
  return null;
}
function PopupMouseOver()
{
  var nLevel = GetEventLevel();
  if (nLevel < 0) return;
  var oPopupEvent = GetEventFromLevel(nLevel);
  var oSrcElem = GetEventSrcItem(oPopupEvent);
  if (oSrcElem)
    {
    if (oSrcElem != _arrSelected[nLevel])
      {
      if (FIsIType(oSrcElem, "separator")) return;
      ToggleMenuItem(nLevel, oSrcElem);
      if (FIsIType(oSrcElem, "submenu")) EngageSelection(true, true, false);
      }
    else if (nLevel < _nLevel)
      {
      UnselectCurrentOption();
      }
    }
}
function PopupMouseLeave()
{
  if (GetEventLevel() == _nLevel) UnselectCurrentOption();
}
function PopupMouseUp()
{
  var nLevel = GetEventLevel();
  if (nLevel < 0) return;
  var oItem = _arrSelected[nLevel];
  if (GetEventFromLevel(nLevel).button == 1 || FIsIType(oItem, "submenu"))
    {
    UpdateLevel(nLevel);
    EngageSelection(true, false, false);
    }
}
function PopupKeyDown()
{
  var nLevel = GetEventLevel();
  if (nLevel < 0) return;
  var oPopupEvent = GetEventFromLevel(nLevel);
  var nKeyCode = oPopupEvent.keyCode;
  if (nKeyCode == 9) nKeyCode = !oPopupEvent.shiftKey ? 40 : 38;
  ClearShowSubMenuEvnt();
  switch (nKeyCode)
    {
  case 38:  
    MoveMenuSelection(-1);
    break;
  case 40:  
    MoveMenuSelection(1);
    break;
  case 37:  
  case 27: 
    CloseCurrentLevel(nKeyCode == 27);
    break;
  case 39:  
  case 13:  
    EngageSelection(nKeyCode == 13, false, true);
    break;
    }
  oPopupEvent.returnValue = false;
}
function EngageSelection(fDoSelection, fDelayExpandSM, fEnterSM)
{
  var oItem = _arrSelected[_nLevel];
  if (!oItem || oItem.optionDisabled) return;
  if (FIsIType(oItem, "submenu"))
    {
    if (fDelayExpandSM)
      {
      SetShowSubMenuEvnt();
      }
    else
      {
      ShowSubMenu(_nLevel, oItem);
      if (fEnterSM) MoveMenuSelection(1);
      }
    }
  else if (fDoSelection)
    {
    var fnOnClick = oItem.getAttribute("onMenuClick");
    if (fnOnClick)
      {
      if (FIStringEquals(typeof(fnOnClick), "string"))
        fnOnClick = new Function("var document=window.document; {" + fnOnClick + "}");
      var oTemp = window.document.body.appendChild(window.document.createElement("span"));
      oTemp.onclick = fnOnClick;
      oTemp.click();
      oTemp.removeNode();
      HideMenu();
      }
    }
}
function GetIType(oItem)
{
  return oItem ? oItem.getAttribute("type") : null;
}
function FIsIType(oItem, wzType)
{
  return FIStringEquals(GetIType(oItem), wzType);
}
function SetIType(oItem, wzType)
{
  if (oItem) oItem.setAttribute("type", wzType);
}
function FIStringEquals(wzX, wzY)
{
  return wzX != null && wzY != null && wzX.toLowerCase() == wzY.toLowerCase();
}
function FIStringContains(wzX, wzY)
{
  return wzX != null && wzY != null && wzX.toLowerCase().indexOf(wzY.toLowerCase()) >= 0;
}
function FIStringStartsWith(wzX, wzY)
{
  return wzX != null && wzY != null && wzX.toLowerCase().indexOf(wzY.toLowerCase()) == 0;
}
function FIStringEndsWith(wzX, wzY)
{
  return wzX != null && wzY != null && wzX.length >= wzY.length &&
    (wzY == "" || wzX.toLowerCase().indexOf(wzY.toLowerCase()) == wzX.length - wzY.length);
}
function CloseCurrentLevel(fAllowHideRoot)
{
  if (_nLevel > 0) UpdateLevel(_nLevel - 1);
  else if (fAllowHideRoot) HideMenu();
}
function UnselectCurrentOption()
{
  if (_nLevel >= 0)
    {
    var oItem = _arrSelected[_nLevel];
    if (FIsIType(oItem, "option"))
      {
      DropDownMenu_UnselectItem(oItem);
      _arrSelected[_nLevel] = null;
      }
    }
}
function MakeID(nLevel, nIndex)
{
  return _wzPrefixID + "_" + nLevel + "_" + nIndex;
}
function GetItem(nLevel, nIndex)
{
  var oPopup = _dropDownMenu_currentPopUp;
  return oPopup ? oPopup.document.getElementById(MakeID(nLevel, nIndex)) : null;
}
function MoveMenuSelection(iDir)
{
  var nIndex = -1;
  var nNumItems = _oRoot.children.length;
  var oSelected = _arrSelected[_nLevel];
  if (oSelected)
    {
    var wzSelectedID = oSelected ? oSelected.id : null;
    if (wzSelectedID)
      {
      var nCurIndex = parseInt(wzSelectedID.substring(wzSelectedID.lastIndexOf("_") + 1, wzSelectedID.length));
      nIndex = (nCurIndex + nNumItems + iDir) % nNumItems; 
      }
    }
  if (nIndex < 0)
    nIndex = iDir > 0 ? 0 : (nNumItems - 1);
  var oItem;
  var nIndexStart = nIndex;
  do
    {
    oItem = GetItem(_nLevel, nIndex);
    nIndex = (nIndex + nNumItems + iDir) % nNumItems; 
    }
  while (nIndex != nIndexStart &&
       (!oItem || oItem.style.display == "none" ||
        !(FIsIType(oItem, "option") || FIsIType(oItem, "submenu"))));
  ToggleMenuItem(_nLevel, oItem);
}
function ToggleMenuItem(nLevel, oItem)
{
  var oOld = _arrSelected[nLevel];
  if (!oItem || (oOld && oItem.id == oOld.id)) return;
  if (oOld) DropDownMenu_UnselectItem(oOld);
  UpdateLevel(nLevel);
  DropDownMenu_SelectItem(oItem);
  _arrSelected[nLevel] = oItem;
  oItem.tabIndex = 0;
  oItem.setActive();
}