// ===================================================================
// Author: Matt Kruse <matt@mattkruse.com>
// WWW: http://www.mattkruse.com/
//
// NOTICE: You may use this code for any purpose, commercial or
// private, without any further permission from the author. You may
// remove this notice from your final code if you wish, however it is
// appreciated by the author if at least my web site address is kept.
//
// You may *NOT* re-distribute this code in any way except through its
// use. That means, you can include it in your product, or your web
// site, or any other form where the code is actually being used. You
// may not put the plain javascript up on your site for download or
// include it in your javascript libraries for download. Instead,
// please just point to my URL to ensure the most up-to-date versions
// of the files. Thanks.
// ===================================================================


/* 
PopupWindow.js
Author: Matt Kruse
Last modified: 3/21/02

DESCRIPTION: This object allows you to easily and quickly popup a window
in a certain place. The window can either be a DIV or a separate browser
window.

COMPATABILITY: Works with Netscape 4.x, 6.x, IE 5.x on Windows. Some small
positioning errors - usually with Window positioning - occur on the 
Macintosh platform. Due to bugs in Netscape 4.x, populating the popup 
window with <STYLE> tags may cause errors.

USAGE:
// Create an object for a WINDOW popup
var win = new PopupWindow(); 

// Create an object for a DIV window using the DIV named 'mydiv'
var win = new PopupWindow('mydiv'); 

// Set the window to automatically hide itself when the user clicks 
// anywhere else on the page except the popup
win.autoHide(); 

// Show the window relative to the anchor name passed in
win.showPopup(anchorname);

// Hide the popup
win.hidePopup();

// Set the size of the popup window (only applies to WINDOW popups
win.setSize(width,height);

// Populate the contents of the popup window that will be shown. If you 
// change the contents while it is displayed, you will need to refresh()
win.populate(string);

// Refresh the contents of the popup
win.refresh();

// Specify how many pixels to the right of the anchor the popup will appear
win.offsetX = 50;

// Specify how many pixels below the anchor the popup will appear
win.offsetY = 100;

NOTES:
1) Requires the functions in AnchorPosition.js

2) Your anchor tag MUST contain both NAME and ID attributes which are the 
   same. For example:
   <A NAME="test" ID="test"> </A>

3) There must be at least a space between <A> </A> for IE5.5 to see the 
   anchor tag correctly. Do not do <A></A> with no space.

4) When a PopupWindow object is created, a handler for 'onmouseup' is
   attached to any event handler you may have already defined. Do NOT define
   an event handler for 'onmouseup' after you define a PopupWindow object or
   the autoHide() will not work correctly.
*/ 

// Set the position of the popup window based on the anchor
function PopupWindow_getXYPosition(anchorname) {
  var coordinates;
  if (this.type == "WINDOW") {
    coordinates = getAnchorWindowPosition(anchorname);
    }
  else {
    coordinates = getAnchorPosition(anchorname);
    }
  this.x = coordinates.x + 154;
  this.y = coordinates.y - 3;
  }
// Set width/height of DIV/popup window
function PopupWindow_setSize(width,height) {
  this.width = width;
  this.height = height;
  }
// Fill the window with contents
function PopupWindow_populate(contents) {
  this.contents = contents;
  this.populated = false;
  }
// Refresh the displayed contents of the popup
function PopupWindow_refresh() {
  if (this.divName != null) {
    // refresh the DIV object
    if (this.use_gebi) {
      document.getElementById(this.divName).innerHTML = this.contents;
      }
    else if (this.use_css) { 
      document.all[this.divName].innerHTML = this.contents;
      }
    else if (this.use_layers) { 
      var d = document.layers[this.divName]; 
      d.document.open();
      d.document.writeln(this.contents);
      d.document.close();
      }
    }
  else {
    if (this.popupWindow != null && !this.popupWindow.closed) {
      this.popupWindow.document.open();
      this.popupWindow.document.writeln(this.contents);
      this.popupWindow.document.close();
      this.popupWindow.focus();
      }
    }
  }
// Position and show the popup, relative to an anchor object
function PopupWindow_showPopup(anchorname) {
  this.getXYPosition(anchorname);
  this.x += this.offsetX;
  this.y += this.offsetY;
  if (!this.populated && (this.contents != "")) {
    this.populated = true;
    this.refresh();
  }
  if (this.divName != null) {
    // Show the DIV object
    document.getElementById(this.divName).style.left = this.x + 'px';
    document.getElementById(this.divName).style.top = this.y + 'px';
    // [pklein ] Hide the comboboxes
    this.toggleCombos('hidden');
    document.getElementById(this.divName).style.visibility = "visible";
  }
  else {
    if (this.popupWindow == null || this.popupWindow.closed) {
      // If the popup window will go off-screen, move it so it doesn't
      if (screen && screen.availHeight) {
        if ((this.y + this.height) > screen.availHeight) {
          this.y = screen.availHeight - this.height;
          }
        }
      if (screen && screen.availWidth) {
        if ((this.x + this.width) > screen.availWidth) {
          this.x = screen.availWidth - this.width;
          }
        }
      this.popupWindow = window.open("about:blank","window_"+anchorname,"toolbar=no,location=no,status=no,menubar=no,scrollbars=auto,resizable,alwaysRaised,dependent,titlebar=no,width="+this.width+",height="+this.height+",screenX="+this.x+",left="+this.x+",screenY="+this.y+",top="+this.y+"");
      }
    this.refresh();
    }
  }
// Hide the popup
function PopupWindow_hidePopup() {
  if (this.divName != null) {
    if (this.use_gebi) {
      document.getElementById(this.divName).style.visibility = "hidden";
      // [pklein] show the comboboxes again
      this.toggleCombos('visible');
      }
    else if (this.use_css) {
      document.all[this.divName].style.visibility = "hidden";
      }
    else if (this.use_layers) {
      document.layers[this.divName].visibility = "hidden";
      }
    }
  else {
    if (this.popupWindow && !this.popupWindow.closed) {
      this.popupWindow.close();
      this.popupWindow = null;
      }
    }
  }
// Pass an event and return whether or not it was the popup DIV that was clicked
function PopupWindow_isClicked(e) {
  if(this.divName != null) {
    var t;
   
    if(typeof e.srcElement!='undefined') {
      t = e.srcElement;  

      t = window.event.srcElement;  
    } else {
      t = e.target;
    }
    
    while(t!=null) {
      if((typeof t.id!='undefined') && t.id==this.divName) {
        return true;
      }
      t = t.parentNode;
    }
  }
  return false;
}

// Check an onMouseDown event to see if we should hide
function PopupWindow_hideIfNotClicked(e) {
  if (this.autoHideEnabled && !this.isClicked(e)) {
    this.hidePopup();
    }
  }
// Call this to make the DIV disable automatically when mouse is clicked outside it
function PopupWindow_autoHide() {
  this.autoHideEnabled = true;
  }
// This global function checks all PopupWindow objects onmouseup to see if they should be hidden
function PopupWindow_hidePopupWindows(e) {
  if(e==null) {
    e = window.event;
  }
  
  for(var i=0; i<popupWindowObjects.length; i++) {
    if(popupWindowObjects[i] != null) {
      var p = popupWindowObjects[i];
      p.hideIfNotClicked(e);
      }
    }
  }
// Run this immediately to attach the event listener
function PopupWindow_attachListener() {
  if(document.layers) {
    document.captureEvents(Event.MOUSEUP);
  }
  window.popupWindowOldEventListener = document.onmouseup;
  if(window.popupWindowOldEventListener != null) {
    document.onmouseup = function(e) { window.popupWindowOldEventListener(e); PopupWindow_hidePopupWindows(e);};
  } else {
    document.onmouseup = PopupWindow_hidePopupWindows;
  }
}
  
function PopupWindow_toggleCombos(showHow) {
  var i;
  var cboX; var cboY,scX,scY;
  scX = this.x;
  scY = this.y;    
  if(this.sel==null) {
    this.sel = document.getElementsByTagName("SELECT")
    this.sel.level = 0
  }
  var sel=this.sel
  for(i=0;i<sel.length;i++) {
    cboX = getOffsetLeft(sel[i]);
    cboY = getOffsetTop(sel[i]);
    if(((cboX>=scX-15) && (cboX<=scX + 150)) && ((cboY >= scY-15) && (cboY<=scY + 175))) sel[i].style.visibility=showHow;
   	//Check for right hand side overlapping.
   	cboY=cboY+15;
   	cboX = cboX + sel[i].offsetWidth;
   	if(((cboX>=scX+15) && (cboX<=scX + 150)) && ((cboY>=scY-15) && (cboY<=scY + 175))) sel[i].style.visibility=showHow;
   	// check if the left side and the right side overlap the whole datepicker
   	//
   	//  		|               |
   	//  [com|               |combobox[*]]
   	//  		|               |
   	//  		.---------------.
   	
   	
   	if(((getOffsetLeft(sel[i]) < scX+15) && (cboX > scX + 150)) && ((cboY>=scY-15) && (cboY<=scY + 175))) sel[i].style.visibility=showHow;
  }
}

function getOffsetLeft (el) {
  var ol = el.offsetLeft;
  while((el = el.offsetParent) != null) {
    ol += el.offsetLeft;
  }
  return ol;
}


function getOffsetTop (el) {
  var ot = el.offsetTop;
  while((el = el.offsetParent) != null)
    ot += el.offsetTop;
  return ot;
}
  
  
// CONSTRUCTOR for the PopupWindow object
// Pass it a DIV name to use a DHTML popup, otherwise will default to window popup
function PopupWindow() {
  if (!window.popupWindowIndex) { window.popupWindowIndex = 0; }
  if (!window.popupWindowObjects) { window.popupWindowObjects = new Array(); }
  if (!window.listenerAttached) {
    window.listenerAttached = true;
    PopupWindow_attachListener();
    }
  this.index = popupWindowIndex++;
  popupWindowObjects[this.index] = this;
  this.divName = null;
  this.popupWindow = null;
  this.width=0;
  this.height=0;
  this.populated = false;
  this.visible = false;
  this.autoHideEnabled = false;
  
  this.contents = "";
  if (arguments.length>0) {
    this.type="DIV";
    this.divName = arguments[0];
    }
  else {
    this.type="WINDOW";
    }
  this.use_gebi = false;
  this.use_css = false;
  this.use_layers = false;
  if (document.getElementById) { this.use_gebi = true; }
  else if (document.all) { this.use_css = true; }
  else if (document.layers) { this.use_layers = true; }
  else { this.type = "WINDOW"; }
  this.offsetX = 0;
  this.offsetY = 0;
  // Method mappings
  this.getXYPosition = PopupWindow_getXYPosition;
  this.populate = PopupWindow_populate;
  this.refresh = PopupWindow_refresh;
  this.showPopup = PopupWindow_showPopup;
  this.hidePopup = PopupWindow_hidePopup;
  this.setSize = PopupWindow_setSize;
  this.isClicked = PopupWindow_isClicked;
  this.autoHide = PopupWindow_autoHide;
  this.hideIfNotClicked = PopupWindow_hideIfNotClicked;
  this.toggleCombos = PopupWindow_toggleCombos;
  this.x = 0;
  this.y = 0;
  this.sel = null;
  }