// ===================================================================
// 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. 
// If you wish to share this code with others, please just point them
// to the URL instead.
// Please DO NOT link directly to my .js files from your site. Copy
// the files to your server and use them there. Thank you.
// ===================================================================

/* SOURCE FILE: PopupWindow.js */

/* 
   PopupWindow.js
   Author: Matt Kruse
   Last modified: 02/16/04

   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);

   // set the URL of the window, rather than populating its contents
   // manually
   win.setUrl("http://www.site.com/");

   // 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.
*/ 


// hack by arjan, show an iframe below the div, so it flows over flash and select boxes in ie.
function PopupWindow_showIFrame(id) {
    var div = document.getElementById(id);
    var iframe = document.getElementById(id+"#iframe");
    if (!iframe) {
        iframe = document.createElement("IFRAME");
        iframe.setAttribute("id", id+"#iframe");
        iframe.setAttribute("src","javascript:;");
        iframe.setAttribute("scrolling", "no");
        iframe.setAttribute("frameborder", "0");
        div.parentNode.insertBefore(iframe, div);
    }

    iframe.style.position = 'absolute';
    iframe.style.marginLeft = div.style.marginLeft;
    iframe.style.marginTop = div.style.marginTop;
    iframe.style.width = div.offsetWidth;
    iframe.style.height = div.offsetHeight;
    iframe.style.top = div.style.top;
    iframe.style.left = div.style.left;
    iframe.style.zIndex = div.style.zIndex?div.style.zIndex-1:10;
    iframe.style.display = 'block';
    iframe.style.visibility = 'visible';
}

function PopupWindow_hideIFrame(id) {
    var iframe = document.getElementById(id+"#iframe");
    if (!iframe) return;
    iframe.style.display = 'none';
    iframe.style.visibility = 'hidden';
    iframe.width = "0px"; iframe.height="0px";
}


// Set the position of the popup window based on the anchor
function PopupWindow_getXYPosition(anchor) {
    if (typeof anchor != "object") anchorname = document.getElementById(anchor);
    var coords = getPosition(anchor);
    //console.info(coords);
	this.x = coords[0];
	this.y = coords[1];
}
// 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;
}
// Set the URL to go to
function PopupWindow_setUrl(url) {
	this.url = url;
}
// Set the window popup properties
function PopupWindow_setWindowProperties(props) {
	this.windowProperties = props;
}
// 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) {
			if (this.url!="") {
				this.popupWindow.location.href=this.url;
            }
			else {
				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.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.zIndex = 400;
        document.getElementById(this.divName).style.left = this.offsetX+"px";
        document.getElementById(this.divName).style.top = this.offsetY+"px";
        document.getElementById(this.divName).style.visibility = "visible";

        // PopupWindow_showIFrame(this.divName);
    }
	else {
		if (this.popupWindow == null || this.popupWindow.closed) {
			// If the popup window will go off-screen, move it so it doesn't
			if (this.x<0) { this.x=0; }
			if (this.y<0) { this.y=0; }
			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;
                }
            }
			var avoidAboutBlank = window.opera || ( document.layers && !navigator.mimeTypes['*'] ) || navigator.vendor == 'KDE' || ( document.childNodes && !document.all && !navigator.taintEnabled );
			this.popupWindow = window.open(avoidAboutBlank?"":"about:blank","window_"+anchorname,this.windowProperties+",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";
        }
		else if (this.use_css) {
			document.all[this.divName].style.visibility = "hidden";
        }
		else if (this.use_layers) {
			document.layers[this.divName].visibility = "hidden";
        }
        PopupWindow_hideIFrame(this.divName);
    }
	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) {
    try {
        if (this.divName != null) {
            if (this.use_layers) {
                var clickX = e.pageX;
                var clickY = e.pageY;
                var t = document.layers[this.divName];
                if ((clickX > t.left) && (clickX < t.left+t.clip.width) && (clickY > t.top) && (clickY < t.top+t.clip.height)) {
                    return true;
                }
                else { return false; }
            }
            else if (document.all) { // Need to hard-code this to trap IE for error-handling
                var t = window.event.srcElement;
                while (t.parentElement != null) {
                    if (t.id==this.divName) {
                        return true;
                    }
                    t = t.parentElement;
                }
                return false;
            }
            else if (this.use_gebi && e) {
                var t = e.originalTarget;
                while (t.parentNode != null) {
                    if (t.id==this.divName) {
                        return true;
                    }
                    t = t.parentNode;
                }
                return false;
            }
            return false;
        }
        return false;
    } catch(e) {
        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) {
	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 = new Function("window.popupWindowOldEventListener(); PopupWindow_hidePopupWindows();");
    }
	else {
		document.onmouseup = PopupWindow_hidePopupWindows;
    }
}
// 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 = "";
	this.url="";
	this.windowProperties="toolbar=no,location=no,status=no,menubar=no,scrollbars=auto,resizable,alwaysRaised,dependent,titlebar=no";
	this.offsetX = 0;
	this.offsetY = 0;
    
	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"; }
	// Method mappings
	this.getXYPosition = PopupWindow_getXYPosition;
	this.populate = PopupWindow_populate;
	this.setUrl = PopupWindow_setUrl;
	this.setWindowProperties = PopupWindow_setWindowProperties;
	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;
    if (arguments.length >= 2) {
        for (var p in arguments[1]) {
            this[p] = arguments[1][p];
        }
    }
}