/*
ModalBox - The pop-up window thingie with AJAX, based on prototype and script.aculo.us.
Copyright Andrey Okonetchnikov (andrej.okonetschnikow@gmail.com), 2006-2007
All rights reserved.
VERSION 1.6.0
Last Modified: 12/13/2007
*/
if (!window.Modalbox)
var Modalbox = new Object();
Modalbox.Methods = {
overrideAlert: false, // Override standard browser alert message with ModalBox
focusableElements: new Array,
currFocused: 0,
initialized: false,
active: true,
options: {
title: "ModalBox Window", // Title of the ModalBox window
// overlayClose: true, // Close modal box by clicking on overlay
width: 500, // Default width in px
height: 90, // Default height in px
overlayOpacity: .65, // Default overlay opacity
overlayDuration: .25, // Default overlay fade in/out duration in seconds
slideDownDuration: .5, // Default Modalbox appear slide down effect in seconds
slideUpDuration: .5, // Default Modalbox hiding slide up effect in seconds
resizeDuration: .25, // Default resize duration seconds
inactiveFade: true, // Fades MB window on inactive state
transitions: true, // Toggles transition effects. Transitions are enabled by default
loadingString: "Please wait. Loading...", // Default loading string message
closeString: "Close window", // Default title attribute for close window link
closeValue: "",// "×", // Default string for close link in the header
params: {},
method: 'get', // Default Ajax request method
autoFocusing: true, // Toggles auto-focusing for form elements. Disable for long text pages.
aspnet: false // Should be use then using with ASP.NET costrols. Then true Modalbox window will be injected into the first form element.
},
_options: new Object,
setOptions: function(options) {
Object.extend(this.options, options || {});
},
_init: function(options) {
// Setting up original options with default options
Object.extend(this._options, this.options);
this.setOptions(options);
//Create the overlay
this.MBoverlay = new Element("div", { id: "MB_overlay", opacity: "0" });
//Create DOm for the window
this.MBwindow = new Element("div", {id: "MB_window", style: "display: none"}).update(
this.MBframe = new Element("div", {id: "MB_frame"}).update(
this.MBheader = new Element("div", {id: "MB_header"}).update(
this.MBcaption = new Element("div", {id: "MB_caption"})
)
)
);
this.MBclose = new Element("a", {id: "MB_close", title: this.options.closeString, href: "#"}).update("" + this.options.closeValue + "");
this.MBheader.insert({'bottom':this.MBclose});
this.MBcontent = new Element("div", {id: "MB_content"}).update(
this.MBloading = new Element("div", {id: "MB_loading"}).update(this.options.loadingString)
);
this.MBframe.insert({'bottom':this.MBcontent});
// Inserting into DOM. If parameter set and form element have been found will inject into it. Otherwise will inject into body as topmost element.
// Be sure to set padding and marging to null via CSS for both body and (in case of asp.net) form elements.
var injectToEl = this.options.aspnet ? $(document.body).down('form') : $(document.body);
injectToEl.insert({'top':this.MBwindow});
injectToEl.insert({'top':this.MBoverlay});
// Initial scrolling position of the window. To be used for remove scrolling effect during ModalBox appearing
this.initScrollX = window.pageXOffset || document.body.scrollLeft || document.documentElement.scrollLeft;
this.initScrollY = window.pageYOffset || document.body.scrollTop || document.documentElement.scrollTop;
//Adding event observers
this.hideObserver = this._hide.bindAsEventListener(this);
this.kbdObserver = this._kbdHandler.bindAsEventListener(this);
this._initObservers();
this.initialized = true; // Mark as initialized
},
show: function(content, options) {
if(!this.initialized) this._init(options); // Check for is already initialized
this.content = content;
this.setOptions(options);
if(this.options.title) // Updating title of the MB
$(this.MBcaption).update(this.options.title);
else { // If title isn't given, the header will not displayed
$(this.MBheader).hide();
$(this.MBcaption).hide();
}
if(this.MBwindow.style.display == "none") { // First modal box appearing
this._appear();
this.event("onShow"); // Passing onShow callback
}
else { // If MB already on the screen, update it
this._update();
this.event("onUpdate"); // Passing onUpdate callback
}
},
hide: function(options) { // External hide method to use from external HTML and JS
if(this.initialized) {
// Reading for options/callbacks except if event given as a pararmeter
if(options && typeof options.element != 'function') Object.extend(this.options, options);
// Passing beforeHide callback
this.event("beforeHide");
if(this.options.transitions)
Effect.SlideUp(this.MBwindow, { duration: this.options.slideUpDuration,
transition: Effect.Transitions.sinoidal, afterFinish:
this._deinit.bind(this) } );
else {
$(this.MBwindow).hide();
this._deinit();
}
} else throw("Modalbox is not initialized.");
},
_hide: function(event) { // Internal hide method to use with overlay and close link
event.stop(); // Stop event propaganation for link elements
/* Then clicked on overlay we'll check the option and in case of
overlayClose == false we'll break hiding execution [Fix for #139] */
if(event.element().id == 'MB_overlay' && !this.options.overlayClose) return false;
this.hide();
},
alert: function(message){
var html = '';
Modalbox.show(html, {title: 'Alert: ' + document.title, width: 300});
},
_appear: function() { // First appearing of MB
if(Prototype.Browser.IE && !navigator.appVersion.match(/\b7.0\b/)) { // Preparing IE 6 for showing modalbox
window.scrollTo(0,0);
this._prepareIE("100%", "hidden");
}
this._setWidth();
this._setPosition();
if(this.options.transitions) {
$(this.MBoverlay).setStyle({opacity: 0});
new Effect.Fade(this.MBoverlay, {
from: 0,
to: this.options.overlayOpacity,
duration: this.options.overlayDuration,
afterFinish: function() {
new Effect.SlideDown(this.MBwindow, {
duration: this.options.slideDownDuration,
transition: Effect.Transitions.sinoidal,
afterFinish: function(){
this._setPosition();
this.loadContent();
}.bind(this)
});
}.bind(this)
});
} else {
$(this.MBoverlay).setStyle({opacity: this.options.overlayOpacity});
$(this.MBwindow).show();
this._setPosition();
this.loadContent();
}
this._setWidthAndPosition = this._setWidthAndPosition.bindAsEventListener(this);
Event.observe(window, "resize", this._setWidthAndPosition);
},
resize: function(byWidth, byHeight, options) { // Change size of MB without loading content
var wHeight = $(this.MBwindow).getHeight();
var wWidth = $(this.MBwindow).getWidth();
var hHeight = $(this.MBheader).getHeight();
var cHeight = $(this.MBcontent).getHeight();
var newHeight = ((wHeight - hHeight + byHeight) < cHeight) ? (cHeight + hHeight - wHeight) : byHeight;
if(options) this.setOptions(options); // Passing callbacks
if(this.options.transitions) {
new Effect.ScaleBy(this.MBwindow, byWidth, newHeight, {
duration: this.options.resizeDuration,
afterFinish: function() {
this.event("_afterResize"); // Passing internal callback
this.event("afterResize"); // Passing callback
}.bind(this)
});
} else {
this.MBwindow.setStyle({width: wWidth + byWidth + "px", height: wHeight + newHeight + "px"});
setTimeout(function() {
this.event("_afterResize"); // Passing internal callback
this.event("afterResize"); // Passing callback
}.bind(this), 1);
}
},
resizeToContent: function(options){
// Resizes the modalbox window to the actual content height.
// This might be useful to resize modalbox after some content modifications which were changed ccontent height.
var byHeight = this.options.height - this.MBwindow.offsetHeight;
if(byHeight != 0) {
if(options) this.setOptions(options); // Passing callbacks
Modalbox.resize(0, byHeight);
}
},
resizeToInclude: function(element, options){
// Resizes the modalbox window to the camulative height of element. Calculations are using CSS properties for margins and border.
// This method might be useful to resize modalbox before including or updating content.
var el = $(element);
var elHeight = el.getHeight() + parseInt(el.getStyle('margin-top')) +
parseInt(el.getStyle('margin-bottom')) +
parseInt(el.getStyle('border-top-width')) +
parseInt(el.getStyle('border-bottom-width'));
if(elHeight > 0) {
if(options) this.setOptions(options); // Passing callbacks
Modalbox.resize(0, elHeight);
}
},
_update: function() { // Updating MB in case of wizards
$(this.MBcontent).update("");
this.MBcontent.appendChild(this.MBloading);
$(this.MBloading).update(this.options.loadingString);
this.currentDims = [this.MBwindow.offsetWidth, this.MBwindow.offsetHeight];
Modalbox.resize((this.options.width - this.currentDims[0]),
(this.options.height - this.currentDims[1]), {_afterResize:
this._loadAfterResize.bind(this) });
},
loadContent: function () {
if(this.event("beforeLoad") != false) { // If callback passed false, skip loading of the content
if(typeof this.content == 'string') {
var htmlRegExp = new RegExp(/<\/?[^>]+>/gi);
if(htmlRegExp.test(this.content)) { // Plain HTML given as a parameter
this._insertContent(this.content.stripScripts());
this._putContent(function(){
this.content.extractScripts().map(function(script) {
return eval(script.replace("", ""));
}.bind(window));
}.bind(this));
} else // URL given as a parameter. We'll request it via Ajax
new Ajax.Request( this.content, { method: this.options.method.toLowerCase(), parameters: this.options.params,
onSuccess: function(transport) {
var response = new String(transport.responseText);
this._insertContent(transport.responseText.stripScripts());
this._putContent(function(){
response.extractScripts().map(function(script) {
return eval(script.replace("", ""));
}.bind(window));
});
}.bind(this),
onException: function(instance, exception){
Modalbox.hide();
throw('Modalbox Loading Error: ' + exception);
}
});
} else if (typeof this.content == 'object') {// HTML Object is given
this._insertContent(this.content);
this._putContent();
} else {
Modalbox.hide();
throw('Modalbox Parameters Error: Please specify correct URL or HTML element (plain HTML or object)');
}
}
},
_insertContent: function(content){
$(this.MBcontent).hide().update("");
if(typeof content == 'string') {
setTimeout(function() { // Hack to disable content flickering in Firefox
this.MBcontent.update(content);
}.bind(this), 1);
} else if (typeof content == 'object') { // HTML Object is given
var _htmlObj = content.cloneNode(true); // If node already a part of DOM we'll clone it
// If clonable element has ID attribute defined, modifying it to prevent duplicates
if(content.id) content.id = "MB_" + content.id;
/* Add prefix for IDs on all elements inside the DOM node */
$(content).select('*[id]').each(function(el){ el.id = "MB_" + el.id; });
this.MBcontent.appendChild(_htmlObj);
this.MBcontent.down().show(); // Toggle visibility for hidden nodes
if(Prototype.Browser.IE) // Toggling back visibility for hidden selects in IE
$$("#MB_content select").invoke('setStyle', {'visibility': ''});
}
},
_putContent: function(callback){
// Prepare and resize modal box for content
if(this.options.height == this._options.height) {
setTimeout(function() { // MSIE sometimes doesn't display content correctly
Modalbox.resize(0, $(this.MBcontent).getHeight() - $(this.MBwindow).getHeight() + $(this.MBheader).getHeight(), {
afterResize: function(){
this.MBcontent.show().makePositioned();
this.focusableElements = this._findFocusableElements();
this._setFocus(); // Setting focus on first 'focusable' element in content (input, select, textarea, link or button)
setTimeout(function(){ // MSIE fix
if(callback != undefined)
callback(); // Executing internal JS from loaded content
this.event("afterLoad"); // Passing callback
}.bind(this),1);
}.bind(this)
});
}.bind(this), 1);
} else { // Height is defined. Creating a scrollable window
this._setWidth();
this.MBcontent.setStyle({overflow: 'auto', height: $(this.MBwindow).getHeight() - $(this.MBheader).getHeight() - 13 + 'px'});
this.MBcontent.show();
this.focusableElements = this._findFocusableElements();
this._setFocus(); // Setting focus on first 'focusable' element in content (input, select, textarea, link or button)
setTimeout(function(){ // MSIE fix
if(callback != undefined)
callback(); // Executing internal JS from loaded content
this.event("afterLoad"); // Passing callback
}.bind(this),1);
}
},
activate: function(options){
this.setOptions(options);
this.active = true;
$(this.MBclose).observe("click", this.hideObserver);
if(this.options.overlayClose)
$(this.MBoverlay).observe("click", this.hideObserver);
$(this.MBclose).show();
if(this.options.transitions && this.options.inactiveFade)
new Effect.Appear(this.MBwindow, {duration: this.options.slideUpDuration});
},
deactivate: function(options) {
this.setOptions(options);
this.active = false;
$(this.MBclose).stopObserving("click", this.hideObserver);
if(this.options.overlayClose)
$(this.MBoverlay).stopObserving("click", this.hideObserver);
$(this.MBclose).hide();
if(this.options.transitions && this.options.inactiveFade)
new Effect.Fade(this.MBwindow, {duration: this.options.slideUpDuration, to: .75});
},
_initObservers: function(){
$(this.MBclose).observe("click", this.hideObserver);
if(this.options.overlayClose)
$(this.MBoverlay).observe("click", this.hideObserver);
if(Prototype.Browser.IE)
Event.observe(document, "keydown", this.kbdObserver);
else
Event.observe(document, "keypress", this.kbdObserver);
},
_removeObservers: function(){
$(this.MBclose).stopObserving("click", this.hideObserver);
if(this.options.overlayClose)
$(this.MBoverlay).stopObserving("click", this.hideObserver);
if(Prototype.Browser.IE)
Event.stopObserving(document, "keydown", this.kbdObserver);
else
Event.stopObserving(document, "keypress", this.kbdObserver);
},
_loadAfterResize: function() {
this._setWidth();
this._setPosition();
this.loadContent();
},
_setFocus: function() {
/* Setting focus to the first 'focusable' element which is one with tabindex = 1 or the first in the form loaded. */
if(this.focusableElements.length > 0 && this.options.autoFocusing == true) {
var firstEl = this.focusableElements.find(function (el){
return el.tabIndex == 1;
}) || this.focusableElements.first();
this.currFocused = this.focusableElements.toArray().indexOf(firstEl);
firstEl.focus(); // Focus on first focusable element except close button
} else if($(this.MBclose).visible())
$(this.MBclose).focus(); // If no focusable elements exist focus on close button
},
_findFocusableElements: function(){ // Collect form elements or links from MB content
this.MBcontent.select('input:not([type~=hidden]), select, textarea, button, a[href]').invoke('addClassName', 'MB_focusable');
return this.MBcontent.select('.MB_focusable');
},
_kbdHandler: function(event) {
var node = event.element();
switch(event.keyCode) {
case Event.KEY_TAB:
event.stop();
/* Switching currFocused to the element which was focused by mouse instead of TAB-key. Fix for #134 */
if(node != this.focusableElements[this.currFocused])
this.currFocused = this.focusableElements.toArray().indexOf(node);
if(!event.shiftKey) { //Focusing in direct order
if(this.currFocused == this.focusableElements.length - 1) {
this.focusableElements.first().focus();
this.currFocused = 0;
} else {
this.currFocused++;
this.focusableElements[this.currFocused].focus();
}
} else { // Shift key is pressed. Focusing in reverse order
if(this.currFocused == 0) {
this.focusableElements.last().focus();
this.currFocused = this.focusableElements.length - 1;
} else {
this.currFocused--;
this.focusableElements[this.currFocused].focus();
}
}
break;
case Event.KEY_ESC:
//if(this.active) this._hide(event);
break;
case 32:
this._preventScroll(event);
break;
case 0: // For Gecko browsers compatibility
if(event.which == 32) this._preventScroll(event);
break;
case Event.KEY_UP:
case Event.KEY_DOWN:
case Event.KEY_PAGEDOWN:
case Event.KEY_PAGEUP:
case Event.KEY_HOME:
case Event.KEY_END:
// Safari operates in slightly different way. This realization is still buggy in Safari.
if(Prototype.Browser.WebKit && !["textarea", "select"].include(node.tagName.toLowerCase()))
event.stop();
else if( (node.tagName.toLowerCase() == "input" && ["submit",
"button"].include(node.type)) || (node.tagName.toLowerCase() == "a") )
event.stop();
break;
}
},
_preventScroll: function(event) { // Disabling scrolling by "space" key
if(!["input", "textarea", "select", "button"].include(event.element().tagName.toLowerCase()))
event.stop();
},
_deinit: function()
{
this._removeObservers();
Event.stopObserving(window, "resize", this._setWidthAndPosition );
if(this.options.transitions) {
Effect.toggle(this.MBoverlay, 'appear', {duration:
this.options.overlayDuration, afterFinish:
this._removeElements.bind(this) });
} else {
this.MBoverlay.hide();
this._removeElements();
}
$(this.MBcontent).setStyle({overflow: '', height: ''});
},
_removeElements: function () {
$(this.MBoverlay).remove();
$(this.MBwindow).remove();
if(Prototype.Browser.IE && !navigator.appVersion.match(/\b7.0\b/)) {
this._prepareIE("", ""); // If set to auto MSIE will show horizontal scrolling
window.scrollTo(this.initScrollX, this.initScrollY);
}
/* Replacing prefixes 'MB_' in IDs for the original content */
if(typeof this.content == 'object') {
if(this.content.id && this.content.id.match(/MB_/)) {
this.content.id = this.content.id.replace(/MB_/, "");
}
this.content.select('*[id]').each(function(el){ el.id = el.id.replace(/MB_/, ""); });
}
/* Initialized will be set to false */
this.initialized = false;
this.event("afterHide"); // Passing afterHide callback
this.setOptions(this._options); //Settings options object into intial state
},
_setWidth: function () { //Set size
$(this.MBwindow).setStyle({width: this.options.width + "px", height: this.options.height + "px"});
},
_setPosition: function () {
$(this.MBwindow).setStyle({left:
Math.round((Element.getWidth(document.body) -
Element.getWidth(this.MBwindow)) / 2 ) + "px"});
},
_setWidthAndPosition: function () {
$(this.MBwindow).setStyle({width: this.options.width + "px"});
this._setPosition();
},
_getScrollTop: function () { //From: http://www.quirksmode.org/js/doctypes.html
var theTop;
if (document.documentElement && document.documentElement.scrollTop)
theTop = document.documentElement.scrollTop;
else if (document.body)
theTop = document.body.scrollTop;
return theTop;
},
_prepareIE: function(height, overflow){
$$('html, body').invoke('setStyle', {width: height, height: height,
overflow: overflow}); // IE requires width and height set to 100% and overflow hidden
$$("select").invoke('setStyle', {'visibility': overflow}); // Toggle visibility for all selects in the common document
},
event: function(eventName) {
if(this.options[eventName]) {
var returnValue = this.options[eventName](); // Executing callback
this.options[eventName] = null; // Removing callback after execution
if(returnValue != undefined)
return returnValue;
else
return true;
}
return true;
}
};
Object.extend(Modalbox, Modalbox.Methods);
if(Modalbox.overrideAlert) window.alert = Modalbox.alert;
Effect.ScaleBy = Class.create();
Object.extend(Object.extend(Effect.ScaleBy.prototype, Effect.Base.prototype), {
initialize: function(element, byWidth, byHeight, options) {
this.element = $(element)
var options = Object.extend({
scaleFromTop: true,
scaleMode: 'box', // 'box' or 'contents' or {} with provided values
scaleByWidth: byWidth,
scaleByHeight: byHeight
}, arguments[3] || {});
this.start(options);
},
setup: function() {
this.elementPositioning = this.element.getStyle('position');
this.originalTop = this.element.offsetTop;
this.originalLeft = this.element.offsetLeft;
this.dims = null;
if(this.options.scaleMode=='box')
this.dims = [this.element.offsetHeight, this.element.offsetWidth];
if(/^content/.test(this.options.scaleMode))
this.dims = [this.element.scrollHeight, this.element.scrollWidth];
if(!this.dims)
this.dims = [this.options.scaleMode.originalHeight,
this.options.scaleMode.originalWidth];
this.deltaY = this.options.scaleByHeight;
this.deltaX = this.options.scaleByWidth;
},
update: function(position) {
var currentHeight = this.dims[0] + (this.deltaY * position);
var currentWidth = this.dims[1] + (this.deltaX * position);
currentHeight = (currentHeight > 0) ? currentHeight : 0;
currentWidth = (currentWidth > 0) ? currentWidth : 0;
this.setDimensions(currentHeight, currentWidth);
},
setDimensions: function(height, width) {
var d = {};
d.width = width + 'px';
d.height = height + 'px';
var topd = Math.round((height - this.dims[0])/2);
var leftd = Math.round((width - this.dims[1])/2);
if(this.elementPositioning == 'absolute' || this.elementPositioning == 'fixed') {
if(!this.options.scaleFromTop) d.top = this.originalTop-topd + 'px';
d.left = this.originalLeft-leftd + 'px';
} else {
if(!this.options.scaleFromTop) d.top = -topd + 'px';
d.left = -leftd + 'px';
}
this.element.setStyle(d);
}
});