/* * jQuery blockUI plugin * Version 2.10 (10/22/2008) * @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; } // global $ methods for blocking/unblocking the entire page $.blockUI = function(opts) { install(window, opts); }; $.unblockUI = function(opts) { remove(window, opts); }; // plugin method for blocking element content $.fn.block = function(opts) { return this.each(function() { if ($.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 = 2.09; // 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: '

Please wait...

', // 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: '5px', margin: 0, width: '30%', top: '40%', left: '35%', textAlign: 'center', verticalAlign: 'middle', color: '#000', border: '1px solid #aaa', backgroundColor:'#fff', cursor: 'wait' }, // styles for the overlay overlayCSS: { backgroundColor:'#000', opacity: '0.2' }, // 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, // be default blockUI will supress tab navigation from leaving blocking content; constrainTabKey: true, // fadeOut time in millis; set to 0 to disable fadeout on unblock fadeOut: 0, // 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 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 ie6 = $.browser.msie && /MSIE 6.0/.test(navigator.userAgent); 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 || {}); 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 = {}; $(el).data('blockUI.history', data); data.el = node; data.parent = node.parentNode; data.display = node.style.display; data.position = node.style.position; data.parent.removeChild(node); } var z = opts.baseZ; // blockUI uses 3 layers for blocking, for simplicity they are all used on every platform; // layer1 is the iframe layer which is used to supress bleed through of underlying content // layer2 is the overlay layer which has opacity and a wait cursor // layer3 is the message content that is displayed while blocking var lyr1 = ($.browser.msie) ? $('') : $(''); var lyr2 = $('
'); var lyr3 = full ? $('
') : $(''); // if we have a message, style it if (msg) { lyr3.css(css); } // style the overlay if (!opts.applyPlatformOpacityRules || !($.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) lyr1.css('opacity','0.0'); $([lyr1[0],lyr2[0],lyr3[0]]).appendTo(full ? 'body' : el); // ie7 must use absolute positioning in quirks mode and to account for activex issues (when scrolling) var expr = $.browser.msie && (!$.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; } }); } // show the message lyr3.append(msg).show(); if (msg && (msg.jquery || msg.nodeType)) $(msg).show(); // 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); }; // remove the block function remove(el, opts) { var full = el == window; var data = $(el).data('blockUI.history'); opts = $.extend({}, $.blockUI.defaults, opts || {}); bind(0, el, opts); // unbind events var els = full ? $('body').children().filter('.blockUI') : $('.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; data.parent.appendChild(data.el); $(data.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); // bind anchors and inputs for mouse and key events var events = 'mousedown mouseup keydown keypress click'; 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);