577 lines
23 KiB
JavaScript
577 lines
23 KiB
JavaScript
//
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// ModalBox - The pop-up window thingie with AJAX, based on Prototype JS framework.
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//
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// Created by Andrew Okonetchnikov
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// Copyright 2006-2010 okonet.ru. All rights reserved.
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//
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// Licensed under MIT license.
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//
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if (!window.Modalbox)
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var Modalbox = new Object();
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Modalbox.Methods = {
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overrideAlert: false, // Override standard browser alert message with ModalBox
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focusableElements: new Array,
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currFocused: 0,
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initialized: false,
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active: true,
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options: {
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title: "ModalBox Window", // Title of the ModalBox window
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overlayClose: true, // Close modal box by clicking on overlay
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width: 500, // Default width in px
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height: 90, // Default height in px
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overlayOpacity: .65, // Default overlay opacity
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overlayDuration: .25, // Default overlay fade in/out duration in seconds
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slideDownDuration: .5, // Default Modalbox appear slide down effect in seconds
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slideUpDuration: .5, // Default Modalbox hiding slide up effect in seconds
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resizeDuration: .25, // Default resize duration seconds
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inactiveFade: true, // Fades MB window on inactive state
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transitions: true, // Toggles transition effects. Transitions are enabled by default
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loadingString: "Please wait. Loading...", // Default loading string message
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closeString: "Close window", // Default title attribute for close window link
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closeValue: "×", // Default string for close link in the header
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params: {},
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method: 'get', // Default Ajax request method
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autoFocusing: true, // Toggles auto-focusing for form elements. Disable for long text pages.
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aspnet: false, // Should be use then using with ASP.NET costrols. Then true Modalbox window will be injected into the first form element.
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resizeCSSID: ''
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},
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_options: new Object,
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setOptions: function(options) {
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Object.extend(this.options, options || {});
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},
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_init: function(options) {
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// Setting up original options with default options
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Object.extend(this._options, this.options);
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this.setOptions(options);
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//Creating the overlay
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this.MBoverlay = new Element("div", { id: "MB_overlay", style: "opacity: 0" });
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//Creating the modal window
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this.MBwindowwrapper = new Element("div", {id: "MB_windowwrapper"}).update(
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this.MBwindow = new Element("div", {id: "MB_window", style: "display: none"}).update(
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this.MBframe = new Element("div", {id: "MB_frame"}).update(
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this.MBheader = new Element("div", {id: "MB_header"}).update(
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this.MBcaption = new Element("div", {id: "MB_caption"})
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)
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)
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)
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);
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this.MBclose = new Element("a", {id: "MB_close", title: this.options.closeString, href: "#"}).update("<span>" + this.options.closeValue + "</span>");
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this.MBheader.insert({'bottom':this.MBclose});
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this.MBcontent = new Element("div", {id: "MB_content"}).update(
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this.MBloading = new Element("div", {id: "MB_loading"}).update(this.options.loadingString)
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);
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this.MBframe.insert({'bottom':this.MBcontent});
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// Inserting into DOM. If parameter set and form element have been found will inject into it. Otherwise will inject into body as topmost element.
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// Be sure to set padding and marging to null via CSS for both body and (in case of asp.net) form elements.
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var injectToEl = this.options.aspnet ? $(document.body).down('form') : $(document.body);
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injectToEl.insert({'top':this.MBwindowwrapper});
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injectToEl.insert({'top':this.MBoverlay});
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var scrollOffsets = document.viewport.getScrollOffsets();
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if (scrollOffsets[1] > 0) {
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$('MB_window').setStyle({top:scrollOffsets[1] + 'px'});
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}
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Event.observe(window, 'scroll', function() {
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scrollOffsets = document.viewport.getScrollOffsets();
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$('MB_window').setStyle({top:scrollOffsets[1] + 'px'});
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});
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// Initial scrolling position of the window. To be used for remove scrolling effect during ModalBox appearing
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this.initScrollX = window.pageXOffset || document.body.scrollLeft || document.documentElement.scrollLeft;
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this.initScrollY = window.pageYOffset || document.body.scrollTop || document.documentElement.scrollTop;
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//Adding event observers
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this.hideObserver = this._hide.bindAsEventListener(this);
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this.kbdObserver = this._kbdHandler.bindAsEventListener(this);
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this._initObservers();
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this.initialized = true; // Mark as initialized
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},
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show: function(content, options) {
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if(!this.initialized) this._init(options); // Check for is already initialized
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this.content = content;
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this.setOptions(options);
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if(this.options.title) // Updating title of the MB
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$(this.MBcaption).update(this.options.title);
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else { // If title isn't given, the header will not displayed
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$(this.MBheader).hide();
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$(this.MBcaption).hide();
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}
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if(this.MBwindow.style.display == "none") { // First modal box appearing
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this._appear();
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this.event("onShow"); // Passing onShow callback
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}
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else { // If MB already on the screen, update it
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this._update();
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this.event("onUpdate"); // Passing onUpdate callback
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}
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},
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hide: function(options) { // External hide method to use from external HTML and JS
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if(this.initialized) {
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// Reading for options/callbacks except if event given as a pararmeter
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if(options && typeof options.element != 'function') Object.extend(this.options, options);
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// Passing beforeHide callback
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this.event("beforeHide");
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if(this.options.transitions)
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Effect.SlideUp(this.MBwindow, { duration: this.options.slideUpDuration, transition: Effect.Transitions.sinoidal, afterFinish: this._deinit.bind(this) } );
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else {
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$(this.MBwindow).hide();
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this._deinit();
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}
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Event.stopObserving(window, 'scroll');
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} else throw("Modalbox is not initialized.");
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},
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_hide: function(event) { // Internal hide method to use with overlay and close link
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event.stop(); // Stop event propaganation for link elements
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/* Then clicked on overlay we'll check the option and in case of overlayClose == false we'll break hiding execution [Fix for #139] */
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if(event.element().id == 'MB_overlay' && !this.options.overlayClose) return false;
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this.hide();
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},
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alert: function(message){
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var html = '<div class="MB_alert"><p>' + message + '</p><input type="button" onclick="Modalbox.hide()" value="OK" /></div>';
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Modalbox.show(html, {title: 'Alert: ' + document.title, width: 300});
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},
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_appear: function() { // First appearing of MB
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if(Prototype.Browser.IE && !navigator.appVersion.match(/\b7.0\b/)) { // Preparing IE 6 for showing modalbox
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window.scrollTo(0,0);
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this._prepareIE("100%", "hidden");
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}
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this._setWidth();
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if(this.options.transitions) {
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$(this.MBoverlay).setStyle({opacity: 0});
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new Effect.Fade(this.MBoverlay, {
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from: 0,
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to: this.options.overlayOpacity,
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duration: this.options.overlayDuration,
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afterFinish: function() {
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new Effect.SlideDown(this.MBwindow, {
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duration: this.options.slideDownDuration,
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transition: Effect.Transitions.sinoidal,
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afterFinish: function(){
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this.loadContent();
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}.bind(this)
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});
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}.bind(this)
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});
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} else {
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$(this.MBoverlay).setStyle({opacity: this.options.overlayOpacity});
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$(this.MBwindow).show();
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this.loadContent();
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}
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this._setWidthAndPosition = this._setWidthAndPosition.bindAsEventListener(this);
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Event.observe(window, "resize", this._setWidthAndPosition);
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},
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resize: function(byWidth, byHeight, options) { // Change size of MB without loading content
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var oWidth = $(this.MBoverlay).getWidth();
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var wHeight = $(this.MBwindow).getHeight();
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var wWidth = $(this.MBwindow).getWidth();
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var hHeight = $(this.MBheader).getHeight();
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var cHeight = $(this.MBcontent).getHeight();
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var newHeight = ((wHeight - hHeight + byHeight) < cHeight) ? (cHeight + hHeight) : (wHeight + byHeight);
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var el = $(this.MBwindow);
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var contentEl = $(this.MBcontent);
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var windowBottomMargin = 10;
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var windowOffset = (parseInt(el.getStyle('margin-top'), 0) + parseInt(el.getStyle('margin-bottom'), 0) + parseInt(el.getStyle('border-top-width'), 0) + parseInt(el.getStyle('border-bottom-width'), 0)) + windowBottomMargin;
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var contentPadding = (parseInt(contentEl.getStyle('padding-top')) + parseInt(contentEl.getStyle('padding-bottom')));
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if ((newHeight + windowOffset + contentPadding) > document.viewport.getHeight()) {
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// adjust window height to account for margins and border widths
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newHeight = document.viewport.getHeight() - windowOffset - windowBottomMargin;
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// calculate content height including header height and padding values
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newcHeight = newHeight - hHeight - parseInt($(this.MBframe).getStyle('padding-bottom'), 0) - parseInt($(this.MBcontent).getStyle('padding-bottom'), 0);
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$(this.MBcontent).setStyle({height:newcHeight + 'px'});
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}
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else if ($(this.MBcontent).getStyle('height')) {
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// release any MB_content height set prior to establish scrollbars in content area
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$(this.MBcontent).setStyle({height:''});
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}
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var newWidth = wWidth + byWidth;
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this.options.width = newWidth;
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if(options) this.setOptions(options); // Passing callbacks
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if(this.options.transitions && !Modalbox.animating) {
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Modalbox.animating = true;
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new Effect.Morph(this.MBwindow, {
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style: "width:" + newWidth + "px; height:" + newHeight + "px;",
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duration: this.options.resizeDuration,
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beforeStart: function(fx){
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fx.element.setStyle({overflow:"hidden"}); // Fix for MSIE 6 to resize correctly
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},
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afterFinish: function(fx) {
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fx.element.setStyle({overflow:"visible"});
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this.event("_afterResize"); // Passing internal callback
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this.event("afterResize"); // Passing callback
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Modalbox.animating = false;
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}.bind(this)
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});
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} else {
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this.MBwindow.setStyle({width: newWidth + "px", height: newHeight + "px"});
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setTimeout(function() {
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this.event("_afterResize"); // Passing internal callback
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this.event("afterResize"); // Passing callback
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}.bind(this), 1);
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}
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},
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resizeToContent: function(options){
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// Resizes the modalbox window to the actual content height.
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// This might be useful to resize modalbox after some content modifications which were changed ccontent height.
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if (typeof options == "undefined") {
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options = new Object();
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}
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// check to see if MB_content includes any images
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var mbimages = $('MB_content').select('img');
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var totalimages = mbimages.length;
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if (mbimages[0]) {
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if (typeof options.imagesloaded == "undefined") {
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var loadedImages = $A();
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var loadedImageTotal = 0;
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mbimages.each(function(o,idx) {
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loadedImages[idx] = new Image();
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loadedImages[idx].src = o.src;
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loadedImages[idx].onload = function() {
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loadedImageTotal++;
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if (loadedImageTotal == totalimages) {
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// make sure all images have been rendered by checking their height
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var imageincomplete = false;
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mbimages.each(function(i) {
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if (i.height == 0) {
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imageincomplete = true;
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}
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});
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if (imageincomplete || Modalbox.animating) {
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// some image hasn't been rendered yet, trigger resize loop until it is
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Modalbox.resizeToContent();
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}
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else {
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// trigger one final resize, but set imagesloaded option to skip inspection of images
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options.imagesloaded = true;
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Modalbox.resizeToContent(options);
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}
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}
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}
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})
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}
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}
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var byHeight = this.options.height - $(this.MBwindow).getHeight();
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if (options.resizeCSSID && $(options.resizeCSSID)) {
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// byWidth is the amount of pixels needed to increase/decrease window to meet width of options.resizeCSSID
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// plus a 10 pixel margin to accommodate scrollbars
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var byWidth = $(options.resizeCSSID).getWidth() - $(this.MBwindow).getWidth() + (parseInt($(this.MBcontent).getStyle('padding-left'), 0) + parseInt($(this.MBcontent).getStyle('padding-right'), 0)) + 15;
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}
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else {
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// don't change width
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var byWidth = 0;
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}
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if(byHeight != 0) {
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if(options) this.setOptions(options); // Passing callbacks
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Modalbox.resize(byWidth, byHeight);
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}
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},
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resizeToInclude: function(element, options){
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// Resizes the modalbox window to the camulative height of element. Calculations are using CSS properties for margins and border.
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// This method might be useful to resize modalbox before including or updating content.
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var el = $(element);
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var elHeight = el.getHeight() + parseInt(el.getStyle('margin-top'), 0) + parseInt(el.getStyle('margin-bottom'), 0) + parseInt(el.getStyle('border-top-width'), 0) + parseInt(el.getStyle('border-bottom-width'), 0);
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if(elHeight > 0) {
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if(options) this.setOptions(options); // Passing callbacks
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Modalbox.resize(0, elHeight);
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}
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},
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_update: function() { // Updating MB in case of wizards
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$(this.MBcontent).update($(this.MBloading).update(this.options.loadingString));
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this.loadContent();
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},
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loadContent: function () {
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if(this.event("beforeLoad") != false) { // If callback passed false, skip loading of the content
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if(typeof this.content == 'string') {
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var htmlRegExp = new RegExp(/<\/?[^>]+>/gi);
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if(htmlRegExp.test(this.content)) { // Plain HTML given as a parameter
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this._insertContent(this.content.stripScripts(), function(){
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this.content.extractScripts().map(function(script) {
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return eval(script.replace("<!--", "").replace("// -->", ""));
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}.bind(window));
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}.bind(this));
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} else // URL given as a parameter. We'll request it via Ajax
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new Ajax.Request( this.content, { method: this.options.method.toLowerCase(), parameters: this.options.params,
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onComplete: function(transport) {
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var response = new String(transport.responseText);
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this._insertContent(transport.responseText.stripScripts(), function(){
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response.extractScripts().map(function(script) {
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return eval(script.replace("<!--", "").replace("// -->", ""));
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}.bind(window));
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});
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}.bind(this),
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onException: function(instance, exception){
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Modalbox.hide();
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throw('Modalbox Loading Error: ' + exception);
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}
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});
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} else if (typeof this.content == 'object') {// HTML Object is given
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this._insertContent(this.content);
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} else {
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Modalbox.hide();
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throw('Modalbox Parameters Error: Please specify correct URL or HTML element (plain HTML or object)');
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}
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}
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},
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_insertContent: function(content, callback){
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$(this.MBcontent).hide().update("");
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if(typeof content == 'string') { // Plain HTML is given
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this.MBcontent.update(new Element("div", { style: "display: none" }).update(content)).down().show();
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} else if (typeof content == 'object') { // HTML Object is given
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var _htmlObj = content.cloneNode(true); // If node already a part of DOM we'll clone it
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// If clonable element has ID attribute defined, modifying it to prevent duplicates
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if(content.id) content.id = "MB_" + content.id;
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/* Add prefix for IDs on all elements inside the DOM node */
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$(content).select('*[id]').each(function(el){ el.id = "MB_" + el.id; });
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this.MBcontent.update(_htmlObj).down('div').show();
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if(Prototype.Browser.IE) // Toggling back visibility for hidden selects in IE
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$$("#MB_content select").invoke('setStyle', {'visibility': ''});
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}
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// Prepare and resize modal box for content
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if(this.options.height == this._options.height) {
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Modalbox.resize((this.options.width - $(this.MBwindow).getWidth()), $(this.MBcontent).getHeight() - $(this.MBwindow).getHeight() + $(this.MBheader).getHeight(), {
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afterResize: function(){
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setTimeout(function(){ // MSIE fix
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this._putContent(callback);
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}.bind(this),1);
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}.bind(this)
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});
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} else { // Height is defined. Creating a scrollable window
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this._setWidth();
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this.MBcontent.setStyle({overflow: 'auto', height: $(this.MBwindow).getHeight() - $(this.MBheader).getHeight() - 13 + 'px'});
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setTimeout(function(){ // MSIE fix
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this._putContent(callback);
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}.bind(this),1);
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}
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},
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_putContent: function(callback){
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this.MBcontent.show();
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this.focusableElements = this._findFocusableElements();
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this._setFocus(); // Setting focus on first 'focusable' element in content (input, select, textarea, link or button)
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if(callback != undefined)
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callback(); // Executing internal JS from loaded content
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this.event("afterLoad"); // Passing callback
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},
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activate: function(options){
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this.setOptions(options);
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this.active = true;
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$(this.MBclose).observe("click", this.hideObserver);
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if(this.options.overlayClose)
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$(this.MBoverlay).observe("click", this.hideObserver);
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$(this.MBclose).show();
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if(this.options.transitions && this.options.inactiveFade)
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new Effect.Appear(this.MBwindow, {duration: this.options.slideUpDuration});
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},
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deactivate: function(options) {
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this.setOptions(options);
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this.active = false;
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$(this.MBclose).stopObserving("click", this.hideObserver);
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if(this.options.overlayClose)
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$(this.MBoverlay).stopObserving("click", this.hideObserver);
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$(this.MBclose).hide();
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if(this.options.transitions && this.options.inactiveFade)
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new Effect.Fade(this.MBwindow, {duration: this.options.slideUpDuration, to: .75});
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},
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_initObservers: function(){
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$(this.MBclose).observe("click", this.hideObserver);
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if(this.options.overlayClose)
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$(this.MBoverlay).observe("click", this.hideObserver);
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if(Prototype.Browser.Gecko)
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Event.observe(document, "keypress", this.kbdObserver); // Gecko is moving focus a way too fast
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else
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Event.observe(document, "keydown", this.kbdObserver); // All other browsers are okay with keydown
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},
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_removeObservers: function(){
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$(this.MBclose).stopObserving("click", this.hideObserver);
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if(this.options.overlayClose)
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$(this.MBoverlay).stopObserving("click", this.hideObserver);
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if(Prototype.Browser.Gecko)
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Event.stopObserving(document, "keypress", this.kbdObserver);
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else
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Event.stopObserving(document, "keydown", this.kbdObserver);
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},
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_setFocus: function() {
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/* Setting focus to the first 'focusable' element which is one with tabindex = 1 or the first in the form loaded. */
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if(this.focusableElements.length > 0 && this.options.autoFocusing == true) {
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var firstEl = this.focusableElements.find(function (el){
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return el.tabIndex == 1;
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}) || this.focusableElements.first();
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this.currFocused = this.focusableElements.toArray().indexOf(firstEl);
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firstEl.focus(); // Focus on first focusable element except close button
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} else if($(this.MBclose).visible())
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$(this.MBclose).focus(); // If no focusable elements exist focus on close button
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},
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_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"});
|
|
},
|
|
|
|
_setWidthAndPosition: function () {
|
|
$(this.MBwindow).setStyle({width: this.options.width + "px"});
|
|
},
|
|
|
|
_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; |