// ===================================================================
// 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;
}


function toggle(div_id) {
    var el = document.getElementById(div_id);
    if (el.style.display == 'none') { el.style.display = 'block'; }
    else { el.style.display = 'none'; }
}
function blanket_size(popUpDivVar) {
    if (typeof window.innerWidth != 'undefined') {
        viewportheight = window.innerHeight;
    } else {
        viewportheight = document.documentElement.clientHeight;
    }
    if ((viewportheight > document.body.parentNode.scrollHeight) && (viewportheight > document.body.parentNode.clientHeight)) {
        blanket_height = viewportheight;
    } else {
        if (document.body.parentNode.clientHeight > document.body.parentNode.scrollHeight) {
            blanket_height = document.body.parentNode.clientHeight;
        } else {
            blanket_height = document.body.parentNode.scrollHeight;
        }
    }
    var blanket = document.getElementById('blanket');
    blanket.style.height = blanket_height + 'px';
    var popUpDiv = document.getElementById(popUpDivVar);
    popUpDiv_height = blanket_height / 2 - 150; //150 is half popup's height
    popUpDiv.style.top = 300 + 'px';
}
function window_pos(popUpDivVar) {
    if (typeof window.innerWidth != 'undefined') {
        viewportwidth = window.innerHeight;
    } else {
        viewportwidth = document.documentElement.clientHeight;
    }
    if ((viewportwidth > document.body.parentNode.scrollWidth) && (viewportwidth > document.body.parentNode.clientWidth)) {
        window_width = viewportwidth;
    } else {
        if (document.body.parentNode.clientWidth > document.body.parentNode.scrollWidth) {
            window_width = document.body.parentNode.clientWidth;
        } else {
            window_width = document.body.parentNode.scrollWidth;
        }
    }
    var popUpDiv = document.getElementById(popUpDivVar);
    window_width = window_width / 2 - 150; //150 is half popup's width
    popUpDiv.style.left = 50 + 'px';
}
function popup(windowname) {
    blanket_size(windowname);
    window_pos(windowname);
    toggle('blanket');
    toggle(windowname);
}

function popupMouseOver(windowname) {
    blanket_sizeMouseOver(windowname);
    window_pos(windowname);
    //toggle('mouseOverContentIDBlanket');
    toggle(windowname);
}

function blanket_sizeMouseOver(popUpDivVar) {
    if (typeof window.innerWidth != 'undefined') {
        viewportheight = window.innerHeight;
    } else {
        viewportheight = document.documentElement.clientHeight;
    }
    if ((viewportheight > document.body.parentNode.scrollHeight) && (viewportheight > document.body.parentNode.clientHeight)) {
        blanket_height = viewportheight;
    } else {
        if (document.body.parentNode.clientHeight > document.body.parentNode.scrollHeight) {
            blanket_height = document.body.parentNode.clientHeight;
        } else {
            blanket_height = document.body.parentNode.scrollHeight;
        }
    }
    var blanket = document.getElementById('mouseOverContentIDBlanket');
    blanket.style.height = blanket_height + 'px';
    var popUpDiv = document.getElementById(popUpDivVar);
    popUpDiv_height = blanket_height / 2 - 150; //150 is half popup's height
    popUpDiv.style.top = 300 + 'px';
}