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