PopupWindow

// ===================================================================
// 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.
// ===================================================================

/*
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.
*/

// 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;
this.y = coordinates.y;
}
// 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.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
if (this.use_gebi) {
document.getElementById(this.divName).style.left = this.x + "px";
document.getElementById(this.divName).style.top = this.y + "px";
document.getElementById(this.divName).style.visibility = "visible";
}
else if (this.use_css) {
document.all[this.divName].style.left = this.x;
document.all[this.divName].style.top = this.y;
document.all[this.divName].style.visibility = "visible";
}
else if (this.use_layers) {
document.layers[this.divName].left = this.x;
document.layers[this.divName].top = this.y;
document.layers[this.divName].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 (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";
}
}
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) {
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;
}

// 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";
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.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;
}