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/*! * jQuery blockUI plugin * Version 2.31 (06-JAN-2010) * @requires jQuery v1.2.3 or later * * Examples at: http://malsup.com/jquery/block/
* Copyright (c) 2007-2008 M. Alsup * Dual licensed under the MIT and GPL licenses: * http://www.opensource.org/licenses/mit-license.php
* http://www.gnu.org/licenses/gpl.html
* * Thanks to Amir-Hossein Sobhi for some excellent contributions! */
; (function ($) { if (/1\.(0|1|2)\.(0|1|2)/.test($.fn.jquery) || /^1.1/.test($.fn.jquery)) { alert('blockUI requires jQuery v1.2.3 or later! You are using v' + $.fn.jquery); return; }
$.fn._fadeIn = $.fn.fadeIn;
var noOp = function () { };
// this bit is to ensure we don't call setExpression when we shouldn't (with extra muscle to handle
// retarded userAgent strings on Vista)
var mode = document.documentMode || 0; var setExpr = $.browser.msie && (($.browser.version < 8 && !mode) || mode < 8); var ie6 = $.browser.msie && /MSIE 6.0/.test(navigator.userAgent) && !mode;
// global $ methods for blocking/unblocking the entire page
$.blockUI = function (opts) { install(window, opts); }; $.unblockUI = function (opts) { remove(window, opts); };
// convenience method for quick growl-like notifications (http://www.google.com/search?q=growl)
$.growlUI = function (title, message, timeout, onClose) { var $m = $('<div class="growlUI"></div>'); if (title) $m.append('<h1>' + title + '</h1>'); if (message) $m.append('<h2>' + message + '</h2>'); if (timeout == undefined) timeout = 3000; $.blockUI({ message: $m, fadeIn: 700, fadeOut: 1000, centerY: false, timeout: timeout, showOverlay: false, onUnblock: onClose, css: $.blockUI.defaults.growlCSS }); };
// plugin method for blocking element content
$.fn.block = function (opts) { return this.unblock({ fadeOut: 0 }).each(function () { if ($.css(this, 'position') == 'static') this.style.position = 'relative'; if ($.browser.msie) this.style.zoom = 1; // force 'hasLayout'
install(this, opts); }); };
// plugin method for unblocking element content
$.fn.unblock = function (opts) { return this.each(function () { remove(this, opts); }); };
$.blockUI.version = 2.31; // 2nd generation blocking at no extra cost!
// override these in your code to change the default behavior and style
$.blockUI.defaults = { // message displayed when blocking (use null for no message)
message: '<h1>Please wait...</h1>',
title: null, // title string; only used when theme == true
draggable: true, // only used when theme == true (requires jquery-ui.js to be loaded)
theme: false, // set to true to use with jQuery UI themes
// styles for the message when blocking; if you wish to disable
// these and use an external stylesheet then do this in your code:
// $.blockUI.defaults.css = {};
css: { padding: 0, margin: 0, width: '30%', top: '40%', left: '35%', textAlign: 'center', color: '#000', border: '3px solid #aaa', backgroundColor: '#fff', cursor: 'wait' },
// minimal style set used when themes are used
themedCSS: { width: '30%', top: '40%', left: '35%' },
// styles for the overlay
overlayCSS: { backgroundColor: '#000', opacity: 0.6, cursor: 'wait' },
// styles applied when using $.growlUI
growlCSS: { width: '350px', top: '10px', left: '', right: '10px', border: 'none', padding: '5px', opacity: 0.6, cursor: 'default', color: '#fff', backgroundColor: '#000', '-webkit-border-radius': '10px', '-moz-border-radius': '10px' },
// IE issues: 'about:blank' fails on HTTPS and javascript:false is s-l-o-w
// (hat tip to Jorge H. N. de Vasconcelos)
iframeSrc: /^https/i.test(window.location.href || '') ? 'javascript:false' : 'about:blank',
// force usage of iframe in non-IE browsers (handy for blocking applets)
forceIframe: false,
// z-index for the blocking overlay
baseZ: 1000,
// set these to true to have the message automatically centered
centerX: true, // <-- only effects element blocking (page block controlled via css above)
centerY: true,
// allow body element to be stetched in ie6; this makes blocking look better
// on "short" pages. disable if you wish to prevent changes to the body height
allowBodyStretch: true,
// enable if you want key and mouse events to be disabled for content that is blocked
bindEvents: true,
// be default blockUI will supress tab navigation from leaving blocking content
// (if bindEvents is true)
constrainTabKey: true,
// fadeIn time in millis; set to 0 to disable fadeIn on block
fadeIn: 200,
// fadeOut time in millis; set to 0 to disable fadeOut on unblock
fadeOut: 400,
// time in millis to wait before auto-unblocking; set to 0 to disable auto-unblock
timeout: 0,
// disable if you don't want to show the overlay
showOverlay: true,
// if true, focus will be placed in the first available input field when
// page blocking
focusInput: true,
// suppresses the use of overlay styles on FF/Linux (due to performance issues with opacity)
applyPlatformOpacityRules: true,
// callback method invoked when fadeIn has completed and blocking message is visible
onBlock: null,
// callback method invoked when unblocking has completed; the callback is
// passed the element that has been unblocked (which is the window object for page
// blocks) and the options that were passed to the unblock call:
// onUnblock(element, options)
onUnblock: null,
// don't ask; if you really must know: http://groups.google.com/group/jquery-en/browse_thread/thread/36640a8730503595/2f6a79a77a78e493#2f6a79a77a78e493
quirksmodeOffsetHack: 4 };
// private data and functions follow...
var pageBlock = null; var pageBlockEls = [];
function install(el, opts) { var full = (el == window); var msg = opts && opts.message !== undefined ? opts.message : undefined; opts = $.extend({}, $.blockUI.defaults, opts || {}); opts.overlayCSS = $.extend({}, $.blockUI.defaults.overlayCSS, opts.overlayCSS || {}); var css = $.extend({}, $.blockUI.defaults.css, opts.css || {}); var themedCSS = $.extend({}, $.blockUI.defaults.themedCSS, opts.themedCSS || {}); msg = msg === undefined ? opts.message : msg;
// remove the current block (if there is one)
if (full && pageBlock) remove(window, { fadeOut: 0 });
// if an existing element is being used as the blocking content then we capture
// its current place in the DOM (and current display style) so we can restore
// it when we unblock
if (msg && typeof msg != 'string' && (msg.parentNode || msg.jquery)) { var node = msg.jquery ? msg[0] : msg; var data = {}; $(el).data('blockUI.history', data); data.el = node; data.parent = node.parentNode; data.display = node.style.display; data.position = node.style.position; if (data.parent) data.parent.removeChild(node); }
var z = opts.baseZ;
// blockUI uses 3 layers for blocking, for simplicity they are all used on every platform;
// layer1 is the iframe layer which is used to supress bleed through of underlying content
// layer2 is the overlay layer which has opacity and a wait cursor (by default)
// layer3 is the message content that is displayed while blocking
var lyr1 = ($.browser.msie || opts.forceIframe) ? $('<iframe class="blockUI" style="z-index:' + (z++) + ';display:none;border:none;margin:0;padding:0;position:absolute;width:100%;height:100%;top:0;left:0" src="' + opts.iframeSrc + '"></iframe>') : $('<div class="blockUI" style="display:none"></div>'); var lyr2 = $('<div class="blockUI blockOverlay" style="z-index:' + (z++) + ';display:none;border:none;margin:0;padding:0;width:100%;height:100%;top:0;left:0"></div>');
var lyr3; if (opts.theme && full) { var s = '<div class="blockUI blockMsg blockPage ui-dialog ui-widget ui-corner-all" style="z-index:' + z + ';display:none;position:fixed">' + '<div class="ui-widget-header ui-dialog-titlebar blockTitle">' + (opts.title || ' ') + '</div>' + '<div class="ui-widget-content ui-dialog-content"></div>' + '</div>'; lyr3 = $(s); } else { lyr3 = full ? $('<div class="blockUI blockMsg blockPage" style="z-index:' + z + ';display:none;position:fixed"></div>') : $('<div class="blockUI blockMsg blockElement" style="z-index:' + z + ';display:none;position:absolute"></div>'); }
// if we have a message, style it
if (msg) { if (opts.theme) { lyr3.css(themedCSS); lyr3.addClass('ui-widget-content'); } else lyr3.css(css); }
// style the overlay
if (!opts.applyPlatformOpacityRules || !($.browser.mozilla && /Linux/.test(navigator.platform))) lyr2.css(opts.overlayCSS); lyr2.css('position', full ? 'fixed' : 'absolute');
// make iframe layer transparent in IE
if ($.browser.msie || opts.forceIframe) lyr1.css('opacity', 0.0);
//$([lyr1[0],lyr2[0],lyr3[0]]).appendTo(full ? 'body' : el);
var layers = [lyr1, lyr2, lyr3], $par = full ? $('body') : $(el); $.each(layers, function () { this.appendTo($par); });
if (opts.theme && opts.draggable && $.fn.draggable) { lyr3.draggable({ handle: '.ui-dialog-titlebar', cancel: 'li' }); }
// ie7 must use absolute positioning in quirks mode and to account for activex issues (when scrolling)
var expr = setExpr && (!$.boxModel || $('object,embed', full ? null : el).length > 0); if (ie6 || expr) { // give body 100% height
if (full && opts.allowBodyStretch && $.boxModel) $('html,body').css('height', '100%');
// fix ie6 issue when blocked element has a border width
if ((ie6 || !$.boxModel) && !full) { var t = sz(el, 'borderTopWidth'), l = sz(el, 'borderLeftWidth'); var fixT = t ? '(0 - ' + t + ')' : 0; var fixL = l ? '(0 - ' + l + ')' : 0; }
// simulate fixed position
$.each([lyr1, lyr2, lyr3], function (i, o) { var s = o[0].style; s.position = 'absolute'; if (i < 2) { full ? s.setExpression('height', 'Math.max(document.body.scrollHeight, document.body.offsetHeight) - (jQuery.boxModel?0:' + opts.quirksmodeOffsetHack + ') + "px"') : s.setExpression('height', 'this.parentNode.offsetHeight + "px"'); full ? s.setExpression('width', 'jQuery.boxModel && document.documentElement.clientWidth || document.body.clientWidth + "px"') : s.setExpression('width', 'this.parentNode.offsetWidth + "px"'); if (fixL) s.setExpression('left', fixL); if (fixT) s.setExpression('top', fixT); } else if (opts.centerY) { if (full) s.setExpression('top', '(document.documentElement.clientHeight || document.body.clientHeight) / 2 - (this.offsetHeight / 2) + (blah = document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop) + "px"'); s.marginTop = 0; } else if (!opts.centerY && full) { var top = (opts.css && opts.css.top) ? parseInt(opts.css.top) : 0; var expression = '((document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop) + ' + top + ') + "px"'; s.setExpression('top', expression); } }); }
// show the message
if (msg) { if (opts.theme) lyr3.find('.ui-widget-content').append(msg); else lyr3.append(msg); if (msg.jquery || msg.nodeType) $(msg).show(); }
if (($.browser.msie || opts.forceIframe) && opts.showOverlay) lyr1.show(); // opacity is zero
if (opts.fadeIn) { var cb = opts.onBlock ? opts.onBlock : noOp; var cb1 = (opts.showOverlay && !msg) ? cb : noOp; var cb2 = msg ? cb : noOp; if (opts.showOverlay) lyr2._fadeIn(opts.fadeIn, cb1); if (msg) lyr3._fadeIn(opts.fadeIn, cb2); } else { if (opts.showOverlay) lyr2.show(); if (msg) lyr3.show(); if (opts.onBlock) opts.onBlock(); }
// bind key and mouse events
bind(1, el, opts);
if (full) { pageBlock = lyr3[0]; pageBlockEls = $(':input:enabled:visible', pageBlock); if (opts.focusInput) setTimeout(focus, 20); } else center(lyr3[0], opts.centerX, opts.centerY);
if (opts.timeout) { // auto-unblock
var to = setTimeout(function () { full ? $.unblockUI(opts) : $(el).unblock(opts); }, opts.timeout); $(el).data('blockUI.timeout', to); } };
// remove the block
function remove(el, opts) { var full = (el == window); var $el = $(el); var data = $el.data('blockUI.history'); var to = $el.data('blockUI.timeout'); if (to) { clearTimeout(to); $el.removeData('blockUI.timeout'); } opts = $.extend({}, $.blockUI.defaults, opts || {}); bind(0, el, opts); // unbind events
var els; if (full) // crazy selector to handle odd field errors in ie6/7
els = $('body').children().filter('.blockUI').add('body > .blockUI'); else els = $('.blockUI', el);
if (full) pageBlock = pageBlockEls = null;
if (opts.fadeOut) { els.fadeOut(opts.fadeOut); setTimeout(function () { reset(els, data, opts, el); }, opts.fadeOut); } else reset(els, data, opts, el); };
// move blocking element back into the DOM where it started
function reset(els, data, opts, el) { els.each(function (i, o) { // remove via DOM calls so we don't lose event handlers
if (this.parentNode) this.parentNode.removeChild(this); });
if (data && data.el) { data.el.style.display = data.display; data.el.style.position = data.position; if (data.parent) data.parent.appendChild(data.el); $(el).removeData('blockUI.history'); }
if (typeof opts.onUnblock == 'function') opts.onUnblock(el, opts); };
// bind/unbind the handler
function bind(b, el, opts) { var full = el == window, $el = $(el);
// don't bother unbinding if there is nothing to unbind
if (!b && (full && !pageBlock || !full && !$el.data('blockUI.isBlocked'))) return; if (!full) $el.data('blockUI.isBlocked', b);
// don't bind events when overlay is not in use or if bindEvents is false
if (!opts.bindEvents || (b && !opts.showOverlay)) return;
// bind anchors and inputs for mouse and key events
var events = 'mousedown mouseup keydown keypress'; b ? $(document).bind(events, opts, handler) : $(document).unbind(events, handler);
// former impl...
// var $e = $('a,:input');
// b ? $e.bind(events, opts, handler) : $e.unbind(events, handler);
};
// event handler to suppress keyboard/mouse events when blocking
function handler(e) { // allow tab navigation (conditionally)
if (e.keyCode && e.keyCode == 9) { if (pageBlock && e.data.constrainTabKey) { var els = pageBlockEls; var fwd = !e.shiftKey && e.target == els[els.length - 1]; var back = e.shiftKey && e.target == els[0]; if (fwd || back) { setTimeout(function () { focus(back) }, 10); return false; } } } // allow events within the message content
if ($(e.target).parents('div.blockMsg').length > 0) return true;
// allow events for content that is not being blocked
return $(e.target).parents().children().filter('div.blockUI').length == 0; };
function focus(back) { if (!pageBlockEls) return; var e = pageBlockEls[back === true ? pageBlockEls.length - 1 : 0]; if (e) e.focus(); };
function center(el, x, y) { var p = el.parentNode, s = el.style; var l = ((p.offsetWidth - el.offsetWidth) / 2) - sz(p, 'borderLeftWidth'); var t = ((p.offsetHeight - el.offsetHeight) / 2) - sz(p, 'borderTopWidth'); if (x) s.left = l > 0 ? (l + 'px') : '0'; if (y) s.top = t > 0 ? (t + 'px') : '0'; };
function sz(el, p) { return parseInt($.css(el, p)) || 0; }; })(jQuery);
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