// JavaScript Document
/*
tip_balloon.js  v. 1.81

The latest version is available at
or http://www.devira.com
or http://www.walterzorn.de

Initial author: Walter Zorn
Last modified: 2.2.2009

Extension for the tooltip library wz_tooltip.js.
Implements balloon tooltips.
*/

// Make sure that the core file wz_tooltip.js is included first
if(typeof config == "undefined")
 alert("Error:\nThe core tooltip script file 'wz_tooltip.js' must be included first, before the plugin files!");

// Here we define new global configuration variable(s) (as members of the
// predefined "config." class).
// From each of these config variables, wz_tooltip.js will automatically derive
// a command which can be passed to Tip() or TagToTip() in order to customize
// tooltips individually. These command names are just the config variable
// name(s) translated to uppercase,
// e.g. from config. Balloon a command BALLOON will automatically be
// created.

//===================  GLOBAL TOOLTIP CONFIGURATION  =========================//
config. Balloon    = false // true or false - set to true if you want this to be the default behaviour
config. BalloonImgPath  = "../scripts/tip_balloon/" // Path to images (border, corners, stem), in quotes. Path must be relative to your HTML file.
// Sizes of balloon images
config. BalloonEdgeSize  = 6  // Integer - sidelength of quadratic corner images
config. BalloonStemWidth = 15 // Integer
config. BalloonStemHeight = 19 // Integer
config. BalloonStemOffset = -7 // Integer - horizontal offset of left stem edge from mouse (recommended: -stemwidth/2 to center the stem above the mouse)
config. BalloonImgExt  = "gif";// File name extension of default balloon images, e.g. "gif" or "png"
//=======  END OF TOOLTIP CONFIG, DO NOT CHANGE ANYTHING BELOW  ==============//


// Create a new tt_Extension object (make sure that the name of that object,
// here balloon, is unique amongst the extensions available for wz_tooltips.js):
var balloon = new tt_Extension();

// Implement extension eventhandlers on which our extension should react

balloon.OnLoadConfig = function()
{
 if(tt_aV[BALLOON])
 {
  // Turn off native style properties which are not appropriate
  balloon.padding = Math.max(tt_aV[PADDING] - tt_aV[BALLOONEDGESIZE], 0);
  balloon.width = tt_aV[WIDTH];
  //if(tt_bBoxOld)
  // balloon.width += (balloon.padding << 1);
  tt_aV[BORDERWIDTH] = 0;
  tt_aV[WIDTH] = 0;
  tt_aV[PADDING] = 0;
  tt_aV[BGCOLOR] = "";
  tt_aV[BGIMG] = "";
  tt_aV[SHADOW] = false;
  // Append slash to img path if missing
  if(tt_aV[BALLOONIMGPATH].charAt(tt_aV[BALLOONIMGPATH].length - 1) != '/')
   tt_aV[BALLOONIMGPATH] += "/";
  return true;
 }
 return false;
};
balloon.OnCreateContentString = function()
{
 if(!tt_aV[BALLOON])
  return false;
  
 var aImg, sImgZ, sCssCrn, sVaT, sVaB, sCss0;

 // Cache balloon images in advance:
 // Either use the pre-cached default images...
 if(tt_aV[BALLOONIMGPATH] == config.BalloonImgPath)
  aImg = balloon.aDefImg;
 // ...or load images from different directory
 else
  aImg = Balloon_CacheImgs(tt_aV[BALLOONIMGPATH], tt_aV[BALLOONIMGEXT]);
 sCss0 = 'padding:0;margin:0;border:0;line-height:0;overflow:hidden;';
 sCssCrn = ' style="position:relative;width:' + tt_aV[BALLOONEDGESIZE] + 'px;' + sCss0 + 'overflow:hidden;';
 sVaT = 'vertical-align:top;" valign="top"';
 sVaB = 'vertical-align:bottom;" valign="bottom"';
 sImgZ = '" style="' + sCss0 + '" />';
 
 tt_sContent = '<table border="0" cellpadding="0" cellspacing="0" style="width:auto;padding:0;margin:0;left:0;top:0;"><tr>'
  // Left-top corner
  + '<td' + sCssCrn + sVaB + '>'
  + '<img src="' + aImg[1].src + '" width="' + tt_aV[BALLOONEDGESIZE] + '" height="' + tt_aV[BALLOONEDGESIZE] + sImgZ
  + '</td>'
  // Top border
  + '<td valign="bottom" style="position:relative;' + sCss0 + '">'
  + '<img id="bALlOOnT" style="position:relative;top:1px;z-index:1;display:none;' + sCss0 + '" src="' + aImg[9].src + '" width="' + tt_aV[BALLOONSTEMWIDTH] + '" height="' + tt_aV[BALLOONSTEMHEIGHT] + '" />'
  + '<div style="position:relative;z-index:0;top:0;' + sCss0 + 'width:auto;height:' + tt_aV[BALLOONEDGESIZE] + 'px;background-image:url(' + aImg[2].src + ');">'
  + '</div>'
  + '</td>'
  // Right-top corner
  + '<td' + sCssCrn + sVaB + '>'
  + '<img src="' + aImg[3].src + '" width="' + tt_aV[BALLOONEDGESIZE] + '" height="' + tt_aV[BALLOONEDGESIZE] + sImgZ
  + '</td>'
  + '</tr><tr>'
  // Left border (background-repeat fix courtesy Dirk Schnitzler)
  + '<td style="position:relative;background-repeat:repeat;' + sCss0 + 'width:' + tt_aV[BALLOONEDGESIZE] + 'px;background-image:url(' + aImg[8].src + ');">'
  // Redundant image for bugous old Geckos which won't auto-expand TD height to 100%
  + '<img width="' + tt_aV[BALLOONEDGESIZE] + '" height="100%" src="' + aImg[8].src + sImgZ
  + '</td>'
  // Content
  + '<td id="bALlO0nBdY" style="position:relative;line-height:normal;background-repeat:repeat;'
  + ';background-image:url(' + aImg[0].src + ')'
  + ';color:' + tt_aV[FONTCOLOR]
  + ';font-family:' + tt_aV[FONTFACE]
  + ';font-size:' + tt_aV[FONTSIZE]
  + ';font-weight:' + tt_aV[FONTWEIGHT]
  + ';text-align:' + tt_aV[TEXTALIGN]
  + ';padding:' + balloon.padding + 'px'
  + ';width:' + ((balloon.width > 0) ? (balloon.width + 'px') : 'auto')
  + ';">' + tt_sContent + '</td>'
  // Right border
  + '<td style="position:relative;background-repeat:repeat;' + sCss0 + 'width:' + tt_aV[BALLOONEDGESIZE] + 'px;background-image:url(' + aImg[4].src + ');">'
  // Image redundancy for bugous old Geckos that won't auto-expand TD height to 100%
  + '<img width="' + tt_aV[BALLOONEDGESIZE] + '" height="100%" src="' + aImg[4].src + sImgZ
  + '</td>'
  + '</tr><tr>'
  // Left-bottom corner
  + '<td' + sCssCrn + sVaT + '>'
  + '<img src="' + aImg[7].src + '" width="' + tt_aV[BALLOONEDGESIZE] + '" height="' + tt_aV[BALLOONEDGESIZE] + sImgZ
  + '</td>'
  // Bottom border
  + '<td valign="top" style="position:relative;' + sCss0 + '">'
  + '<div style="position:relative;left:0;top:0;' + sCss0 + 'width:auto;height:' + tt_aV[BALLOONEDGESIZE] + 'px;background-image:url(' + aImg[6].src + ');"></div>'
  + '<img id="bALlOOnB" style="position:relative;top:-1px;left:2px;z-index:1;display:none;' + sCss0 + '" src="' + aImg[10].src + '" width="' + tt_aV[BALLOONSTEMWIDTH] + '" height="' + tt_aV[BALLOONSTEMHEIGHT] + '" />'
  + '</td>'
  // Right-bottom corner
  + '<td' + sCssCrn + sVaT + '>'
  + '<img src="' + aImg[5].src + '" width="' + tt_aV[BALLOONEDGESIZE] + '" height="' + tt_aV[BALLOONEDGESIZE] + sImgZ
  + '</td>'
  + '</tr></table>';//alert(tt_sContent);
 return true;
};
balloon.OnSubDivsCreated = function()
{
 if(tt_aV[BALLOON])
 {
  var bdy = tt_GetElt("bALlO0nBdY");

  // Insert a TagToTip() HTML element into the central body TD
  if (tt_t2t && !tt_aV[COPYCONTENT] && bdy)
   tt_MovDomNode(tt_t2t, tt_GetDad(tt_t2t), bdy);
  balloon.iStem = tt_aV[ABOVE] * 1;
  balloon.aStem = [tt_GetElt("bALlOOnT"), tt_GetElt("bALlOOnB")];
  balloon.aStem[balloon.iStem].style.display = "inline";
  if (balloon.width < -1)
   Balloon_MaxW(bdy);
  return true;
 }
 return false;
};
// Display the stem appropriately
balloon.OnMoveAfter = function()
{
 if(tt_aV[BALLOON])
 {
  var iStem = (tt_aV[ABOVE] != tt_bJmpVert) * 1;

  // Tooltip position vertically flipped?
  if(iStem != balloon.iStem)
  {
   // Display opposite stem
   balloon.aStem[balloon.iStem].style.display = "none";
   balloon.aStem[iStem].style.display = "inline";
   balloon.iStem = iStem;
  }
  
  balloon.aStem[iStem].style.left = Balloon_CalcStemX() + "px";
  return true;
 }
 return false;
};
function Balloon_CalcStemX()
{
 var x = tt_musX - tt_x + tt_aV[BALLOONSTEMOFFSET] - tt_aV[BALLOONEDGESIZE];
 return Math.max(Math.min(x, tt_w - tt_aV[BALLOONSTEMWIDTH] - (tt_aV[BALLOONEDGESIZE] << 1) - 2), 2);
}
function Balloon_CacheImgs(sPath, sExt)
{
 var asImg = ["background", "lt", "t", "rt", "r", "rb", "b", "lb", "l", "stemt", "stemb"],
 n = asImg.length,
 aImg = new Array(n),
 img;

 while(n)
 {--n;
  img = aImg[n] = new Image();
  img.src = sPath + asImg[n] + "." + sExt;
 }
 return aImg;
}
function Balloon_MaxW(bdy)
{
 if (bdy)
 {
  var iAdd = tt_bBoxOld ? (balloon.padding << 1) : 0, w = tt_GetDivW(bdy);
  if (w > -balloon.width + iAdd)
   bdy.style.width = (-balloon.width + iAdd) + "px";
 }
}
// This mechanism pre-caches the default images specified by
// congif.BalloonImgPath, so, whenever a balloon tip using these default images
// is created, no further server connection is necessary.
function Balloon_PreCacheDefImgs()
{
 // Append slash to img path if missing
 if(config.BalloonImgPath.charAt(config.BalloonImgPath.length - 1) != '/')
  config.BalloonImgPath += "/";
 // Preload default images into array
 balloon.aDefImg = Balloon_CacheImgs(config.BalloonImgPath, config.BalloonImgExt);
}
Balloon_PreCacheDefImgs();