111 lines
3.6 KiB
JavaScript
111 lines
3.6 KiB
JavaScript
/*
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* jQuery.stickyPanel
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* ----------------------
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* version: 1.4.1
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* date: 7/21/11
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*
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* Copyright (c) 2011 Donny Velazquez
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* http://donnyvblog.blogspot.com/
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* http://code.google.com/p/sticky-panel/
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*
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* Licensed under the Apache License 2.0
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*
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*/
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(function ($) {
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$.fn.stickyPanel = function (options) {
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var options = $.extend({}, $.fn.stickyPanel.defaults, options);
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return this.each(function () {
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$(window).bind("scroll.stickyPanel", { selected: $(this), options: options }, Scroll);
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});
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};
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function Scroll(event) {
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var node = event.data.selected;
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var o = event.data.options;
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var isMobile = navigator.userAgent.toLowerCase().indexOf('mobile') > 0;
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var windowHeight = $(window).height();
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var nodeHeight = node.outerHeight(true);
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var scrollTop = $(document).scrollTop();
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// when top of window reaches the top of the panel detach
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if (!isMobile &&
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scrollTop <= $(document).height() - windowHeight && // Fix for rubberband scrolling in Safari on Lion
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scrollTop > node.offset().top - o.topPadding) {
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// topPadding
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var newNodeTop = 0;
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if (o.topPadding != "undefined") {
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newNodeTop = newNodeTop + o.topPadding;
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}
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// get left before adding spacer
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var nodeLeft = node.offset().left;
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// save panels top
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node.data("PanelsTop", node.offset().top - newNodeTop);
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// MOVED: savePanelSpace before afterDetachCSSClass to handle afterDetachCSSClass changing size of node
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// savePanelSpace
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if (o.savePanelSpace == true) {
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var nodeWidth = node.outerWidth(true);
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var nodeCssfloat = node.css("float");
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var nodeCssdisplay = node.css("display");
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var randomNum = Math.ceil(Math.random() * 9999); /* Pick random number between 1 and 9999 */
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node.data("PanelSpaceID", "stickyPanelSpace" + randomNum);
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node.before("<div id='" + node.data("PanelSpaceID") + "' style='width:" + nodeWidth + "px;height:" + nodeHeight + "px;float:" + nodeCssfloat + ";display:" + nodeCssdisplay + ";'> </div>");
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}
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// afterDetachCSSClass
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if (o.afterDetachCSSClass != "") {
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node.addClass(o.afterDetachCSSClass);
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}
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// save inline css
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node.data("Original_Inline_CSS", (!node.attr("style") ? "" : node.attr("style")));
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// detach panel
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node.css({
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"margin": 0,
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"left": nodeLeft,
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"top": newNodeTop,
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"position": "fixed"
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});
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}
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// ADDED: css top check to avoid continuous reattachment
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if (scrollTop <= node.data("PanelsTop") && node.css("top") != "auto") {
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if (o.savePanelSpace == true) {
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$("#" + node.data("PanelSpaceID")).remove();
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}
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// attach panel
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node.attr("style", node.data("Original_Inline_CSS"));
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if (o.afterDetachCSSClass != "") {
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node.removeClass(o.afterDetachCSSClass);
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}
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}
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};
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$.fn.stickyPanel.defaults = {
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topPadding: 0,
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// Use this to set the top margin of the detached panel.
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afterDetachCSSClass: "",
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// This class is applied when the panel detaches.
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savePanelSpace: false
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// When set to true the space where the panel was is kept open.
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};
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})(jQuery); |