// Dialog v3.0 - Copyright (c) 2003-2004 interactivetools.com, inc.
// This copyright notice MUST stay intact for use (see license.txt).
//
// Portions (c) dynarch.com, 2003-2004
//
// A free WYSIWYG editor replacement for <textarea> fields.
// For full source code and docs, visit http://www.interactivetools.com/
//
// Version 3.0 developed by Mihai Bazon.
//   http://dynarch.com/mishoo
//
// $Id$

// Though "Dialog" looks like an object, it isn't really an object.  Instead
// it's just namespace for protecting global symbols.

function Dialog(url, action, init) {
	if (typeof init == "undefined") {
		init = window;	// pass this window object by default
	}
	if (typeof window.showModalDialog == 'function')
	{
		Dialog._return = action;
		var r = window.showModalDialog(url, init, "dialogheight=10;dialogwidth=10;resizable=yes");
	}
	else
	{
		Dialog._geckoOpenModal(url, action, init);
	}
}

Dialog._parentEvent = function(ev) {
    setTimeout( function() { if (Dialog._modal && !Dialog._modal.closed) { Dialog._modal.focus() } }, 50);
    if (Dialog._modal && !Dialog._modal.closed) {
        Dialog._stopEvent(ev);
    }
};

// should be a function, the return handler of the currently opened dialog.
Dialog._return = null;

// constant, the currently opened dialog
Dialog._modal = null;

// the dialog will read it's args from this variable
Dialog._arguments = null;

Dialog._geckoOpenModal = function(url, action, init) {
    //var urlLink = "hadialog"+url.toString();
    var myURL = "hadialog"+url;
    var regObj = /\W/g;
    myURL = myURL.replace(regObj,'_');
    var dlg = window.open(url, myURL,
                  "toolbar=no,menubar=no,personalbar=no,width=10,height=10," +
                  "scrollbars=no,resizable=yes,modal=yes,dependable=yes");
    Dialog._modal = dlg;
    Dialog._arguments = init;

    // capture some window's events
    function capwin(w) {
        Dialog._addEvent(w, "click", Dialog._parentEvent);
        Dialog._addEvent(w, "mousedown", Dialog._parentEvent);
        Dialog._addEvent(w, "focus", Dialog._parentEvent);
    };
    // release the captured events
    function relwin(w) {
        Dialog._removeEvent(w, "click", Dialog._parentEvent);
        Dialog._removeEvent(w, "mousedown", Dialog._parentEvent);
        Dialog._removeEvent(w, "focus", Dialog._parentEvent);
    };
    capwin(window);
    // capture other frames
    for (var i = 0; i < window.frames.length; capwin(window.frames[i++]));
    // make up a function to be called when the Dialog ends.
    Dialog._return = function (val) {
        if (val && action) {
            action(val);
        }
        relwin(window);
        // capture other frames
        for (var i = 0; i < window.frames.length; relwin(window.frames[i++]));
        Dialog._modal = null;
    };
};

// event handling

Dialog._addEvent = function(el, evname, func) {
    if (Dialog.is_ie) {
        el.attachEvent("on" + evname, func);
    } else {
        el.addEventListener(evname, func, true);
    }
};

Dialog._removeEvent = function(el, evname, func) {
    if (Dialog.is_ie) {
        el.detachEvent("on" + evname, func);
    } else {
        el.removeEventListener(evname, func, true);
    }
};

Dialog._stopEvent = function(ev) {
    if (Dialog.is_ie) {
        ev.cancelBubble = true;
        ev.returnValue = false;
    } else {
        ev.preventDefault();
        ev.stopPropagation();
    }
};

Dialog.agt = navigator.userAgent.toLowerCase();
Dialog.is_ie = ((Dialog.agt.indexOf("msie") != -1) && (Dialog.agt.indexOf("opera") == -1));