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xlnt/docs/source/javascripts/lib/_jquery.tocify.js

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rebuild documentation and add missing javascripts
2017-03-23 09:43:25 +08:00
/* jquery Tocify - v1.8.0 - 2013-09-16
* http://www.gregfranko.com/jquery.tocify.js/
* Copyright (c) 2013 Greg Franko; Licensed MIT
* Modified lightly by Robert Lord to fix a bug I found,
* and also so it adds ids to headers
* also because I want height caching, since the
* height lookup for h1s and h2s was causing serious
* lag spikes below 30 fps */
// Immediately-Invoked Function Expression (IIFE) [Ben Alman Blog Post](http://benalman.com/news/2010/11/immediately-invoked-function-expression/) that calls another IIFE that contains all of the plugin logic. I used this pattern so that anyone viewing this code would not have to scroll to the bottom of the page to view the local parameters that were passed to the main IIFE.
(function(tocify) {
// ECMAScript 5 Strict Mode: [John Resig Blog Post](http://ejohn.org/blog/ecmascript-5-strict-mode-json-and-more/)
"use strict";
// Calls the second IIFE and locally passes in the global jQuery, window, and document objects
tocify(window.jQuery, window, document);
}
// Locally passes in `jQuery`, the `window` object, the `document` object, and an `undefined` variable. The `jQuery`, `window` and `document` objects are passed in locally, to improve performance, since javascript first searches for a variable match within the local variables set before searching the global variables set. All of the global variables are also passed in locally to be minifier friendly. `undefined` can be passed in locally, because it is not a reserved word in JavaScript.
(function($, window, document, undefined) {
// ECMAScript 5 Strict Mode: [John Resig Blog Post](http://ejohn.org/blog/ecmascript-5-strict-mode-json-and-more/)
"use strict";
var tocClassName = "tocify",
tocClass = "." + tocClassName,
tocFocusClassName = "tocify-focus",
tocHoverClassName = "tocify-hover",
hideTocClassName = "tocify-hide",
hideTocClass = "." + hideTocClassName,
headerClassName = "tocify-header",
headerClass = "." + headerClassName,
subheaderClassName = "tocify-subheader",
subheaderClass = "." + subheaderClassName,
itemClassName = "tocify-item",
itemClass = "." + itemClassName,
extendPageClassName = "tocify-extend-page",
extendPageClass = "." + extendPageClassName;
// Calling the jQueryUI Widget Factory Method
$.widget("toc.tocify", {
//Plugin version
version: "1.8.0",
// These options will be used as defaults
options: {
// **context**: Accepts String: Any jQuery selector
// The container element that holds all of the elements used to generate the table of contents
context: "body",
// **ignoreSelector**: Accepts String: Any jQuery selector
// A selector to any element that would be matched by selectors that you wish to be ignored
ignoreSelector: null,
// **selectors**: Accepts an Array of Strings: Any jQuery selectors
// The element's used to generate the table of contents. The order is very important since it will determine the table of content's nesting structure
selectors: "h1, h2, h3",
// **showAndHide**: Accepts a boolean: true or false
// Used to determine if elements should be shown and hidden
showAndHide: true,
// **showEffect**: Accepts String: "none", "fadeIn", "show", or "slideDown"
// Used to display any of the table of contents nested items
showEffect: "slideDown",
// **showEffectSpeed**: Accepts Number (milliseconds) or String: "slow", "medium", or "fast"
// The time duration of the show animation
showEffectSpeed: "medium",
// **hideEffect**: Accepts String: "none", "fadeOut", "hide", or "slideUp"
// Used to hide any of the table of contents nested items
hideEffect: "slideUp",
// **hideEffectSpeed**: Accepts Number (milliseconds) or String: "slow", "medium", or "fast"
// The time duration of the hide animation
hideEffectSpeed: "medium",
// **smoothScroll**: Accepts a boolean: true or false
// Determines if a jQuery animation should be used to scroll to specific table of contents items on the page
smoothScroll: true,
// **smoothScrollSpeed**: Accepts Number (milliseconds) or String: "slow", "medium", or "fast"
// The time duration of the smoothScroll animation
smoothScrollSpeed: "medium",
// **scrollTo**: Accepts Number (pixels)
// The amount of space between the top of page and the selected table of contents item after the page has been scrolled
scrollTo: 0,
// **showAndHideOnScroll**: Accepts a boolean: true or false
// Determines if table of contents nested items should be shown and hidden while scrolling
showAndHideOnScroll: true,
// **highlightOnScroll**: Accepts a boolean: true or false
// Determines if table of contents nested items should be highlighted (set to a different color) while scrolling
highlightOnScroll: true,
// **highlightOffset**: Accepts a number
// The offset distance in pixels to trigger the next active table of contents item
highlightOffset: 40,
// **theme**: Accepts a string: "bootstrap", "jqueryui", or "none"
// Determines if Twitter Bootstrap, jQueryUI, or Tocify classes should be added to the table of contents
theme: "bootstrap",
// **extendPage**: Accepts a boolean: true or false
// If a user scrolls to the bottom of the page and the page is not tall enough to scroll to the last table of contents item, then the page height is increased
extendPage: true,
// **extendPageOffset**: Accepts a number: pixels
// How close to the bottom of the page a user must scroll before the page is extended
extendPageOffset: 100,
// **history**: Accepts a boolean: true or false
// Adds a hash to the page url to maintain history
history: true,
// **scrollHistory**: Accepts a boolean: true or false
// Adds a hash to the page url, to maintain history, when scrolling to a TOC item
scrollHistory: false,
// **hashGenerator**: How the hash value (the anchor segment of the URL, following the
// # character) will be generated.
//
// "compact" (default) - #CompressesEverythingTogether
// "pretty" - #looks-like-a-nice-url-and-is-easily-readable
// function(text, element){} - Your own hash generation function that accepts the text as an
// argument, and returns the hash value.
hashGenerator: "compact",
// **highlightDefault**: Accepts a boolean: true or false
// Set's the first TOC item as active if no other TOC item is active.
highlightDefault: true
},
// _Create
// -------
// Constructs the plugin. Only called once.
_create: function() {
var self = this;
self.tocifyWrapper = $('.tocify-wrapper');
self.extendPageScroll = true;
// Internal array that keeps track of all TOC items (Helps to recognize if there are duplicate TOC item strings)
self.items = [];
// Generates the HTML for the dynamic table of contents
self._generateToc();
// Caches heights and anchors
self.cachedHeights = [],
self.cachedAnchors = [];
// Adds CSS classes to the newly generated table of contents HTML
self._addCSSClasses();
self.webkit = (function() {
for(var prop in window) {
if(prop) {
if(prop.toLowerCase().indexOf("webkit") !== -1) {
return true;
}
}
}
return false;
}());
// Adds jQuery event handlers to the newly generated table of contents
self._setEventHandlers();
// Binding to the Window load event to make sure the correct scrollTop is calculated
$(window).load(function() {
// Sets the active TOC item
self._setActiveElement(true);
// Once all animations on the page are complete, this callback function will be called
$("html, body").promise().done(function() {
setTimeout(function() {
self.extendPageScroll = false;
},0);
});
});
},
// _generateToc
// ------------
// Generates the HTML for the dynamic table of contents
_generateToc: function() {
// _Local variables_
// Stores the plugin context in the self variable
var self = this,
// All of the HTML tags found within the context provided (i.e. body) that match the top level jQuery selector above
firstElem,
// Instantiated variable that will store the top level newly created unordered list DOM element
ul,
ignoreSelector = self.options.ignoreSelector;
// If the selectors option has a comma within the string
if(this.options.selectors.indexOf(",") !== -1) {
// Grabs the first selector from the string
firstElem = $(this.options.context).find(this.options.selectors.replace(/ /g,"").substr(0, this.options.selectors.indexOf(",")));
}
// If the selectors option does not have a comman within the string
else {
// Grabs the first selector from the string and makes sure there are no spaces
firstElem = $(this.options.context).find(this.options.selectors.replace(/ /g,""));
}
if(!firstElem.length) {
self.element.addClass(hideTocClassName);
return;
}
self.element.addClass(tocClassName);
// Loops through each top level selector
firstElem.each(function(index) {
//If the element matches the ignoreSelector then we skip it
if($(this).is(ignoreSelector)) {
return;
}
// Creates an unordered list HTML element and adds a dynamic ID and standard class name
ul = $("<ul/>", {
"id": headerClassName + index,
"class": headerClassName
}).
// Appends a top level list item HTML element to the previously created HTML header
append(self._nestElements($(this), index));
// Add the created unordered list element to the HTML element calling the plugin
self.element.append(ul);
// Finds all of the HTML tags between the header and subheader elements
$(this).nextUntil(this.nodeName.toLowerCase()).each(function() {
// If there are no nested subheader elemements
if($(this).find(self.options.selectors).length === 0) {
// Loops through all of the subheader elements
$(this).filter(self.options.selectors).each(function() {
//If the element matches the ignoreSelector then we skip it
if($(this).is(ignoreSelector)) {
return;
}
self._appendSubheaders.call(this, self, ul);
});
}
// If there are nested subheader elements
else {
// Loops through all of the subheader elements
$(this).find(self.options.selectors).each(function() {
//If the element matches the ignoreSelector then we skip it
if($(this).is(ignoreSelector)) {
return;
}
self._appendSubheaders.call(this, self, ul);
});
}
});
});
},
_setActiveElement: function(pageload) {
var self = this,
hash = window.location.hash.substring(1),
elem = self.element.find("li[data-unique='" + hash + "']");
if(hash.length) {
// Removes highlighting from all of the list item's
self.element.find("." + self.focusClass).removeClass(self.focusClass);
// Highlights the current list item that was clicked
elem.addClass(self.focusClass);
// If the showAndHide option is true
if(self.options.showAndHide) {
// Triggers the click event on the currently focused TOC item
elem.click();
}
}
else {
// Removes highlighting from all of the list item's
self.element.find("." + self.focusClass).removeClass(self.focusClass);
if(!hash.length && pageload && self.options.highlightDefault) {
// Highlights the first TOC item if no other items are highlighted
self.element.find(itemClass).first().addClass(self.focusClass);
}
}
return self;
},
// _nestElements
// -------------
// Helps create the table of contents list by appending nested list items
_nestElements: function(self, index) {
var arr, item, hashValue;
arr = $.grep(this.items, function (item) {
return item === self.text();
});
// If there is already a duplicate TOC item
if(arr.length) {
// Adds the current TOC item text and index (for slight randomization) to the internal array
this.items.push(self.text() + index);
}
// If there not a duplicate TOC item
else {
// Adds the current TOC item text to the internal array
this.items.push(self.text());
}
hashValue = this._generateHashValue(arr, self, index);
// ADDED BY ROBERT
// actually add the hash value to the element's id
// self.attr("id", "link-" + hashValue);
// Appends a list item HTML element to the last unordered list HTML element found within the HTML element calling the plugin
item = $("<li/>", {
// Sets a common class name to the list item
"class": itemClassName,
"data-unique": hashValue
}).append($("<a/>", {
"text": self.text()
}));
// Adds an HTML anchor tag before the currently traversed HTML element
self.before($("<div/>", {
// Sets a name attribute on the anchor tag to the text of the currently traversed HTML element (also making sure that all whitespace is replaced with an underscore)
"name": hashValue,
"data-unique": hashValue
}));
return item;
},
// _generateHashValue
// ------------------
// Generates the hash value that will be used to refer to each item.
_generateHashValue: function(arr, self, index) {
var hashValue = "",
hashGeneratorOption = this.options.hashGenerator;
if (hashGeneratorOption === "pretty") {
// remove weird characters
// prettify the text
hashValue = self.text().toLowerCase().replace(/\s/g, "-");
// ADDED BY ROBERT
// remove weird characters
hashValue = hashValue.replace(/[^\x00-\x7F]/g, "");
// fix double hyphens
while (hashValue.indexOf("--") > -1) {
hashValue = hashValue.replace(/--/g, "-");
}
// fix colon-space instances
while (hashValue.indexOf(":-") > -1) {
hashValue = hashValue.replace(/:-/g, "-");
}
} else if (typeof hashGeneratorOption === "function") {
// call the function
hashValue = hashGeneratorOption(self.text(), self);
} else {
// compact - the default
hashValue = self.text().replace(/\s/g, "");
}
// add the index if we need to
if (arr.length) { hashValue += ""+index; }
// return the value
return hashValue;
},
// _appendElements
// ---------------
// Helps create the table of contents list by appending subheader elements
_appendSubheaders: function(self, ul) {
// The current element index
var index = $(this).index(self.options.selectors),
// Finds the previous header DOM element
previousHeader = $(self.options.selectors).eq(index - 1),
currentTagName = +$(this).prop("tagName").charAt(1),
previousTagName = +previousHeader.prop("tagName").charAt(1),
lastSubheader;
// If the current header DOM element is smaller than the previous header DOM element or the first subheader
if(currentTagName < previousTagName) {
// Selects the last unordered list HTML found within the HTML element calling the plugin
self.element.find(subheaderClass + "[data-tag=" + currentTagName + "]").last().append(self._nestElements($(this), index));
}
// If the current header DOM element is the same type of header(eg. h4) as the previous header DOM element
else if(currentTagName === previousTagName) {
ul.find(itemClass).last().after(self._nestElements($(this), index));
}
else {
// Selects the last unordered list HTML found within the HTML element calling the plugin
ul.find(itemClass).last().
// Appends an unorderedList HTML element to the dynamic `unorderedList` variable and sets a common class name
after($("<ul/>", {
"class": subheaderClassName,
"data-tag": currentTagName
})).next(subheaderClass).
// Appends a list item HTML element to the last unordered list HTML element found within the HTML element calling the plugin
append(self._nestElements($(this), index));
}
},
// _setEventHandlers
// ----------------
// Adds jQuery event handlers to the newly generated table of contents
_setEventHandlers: function() {
// _Local variables_
// Stores the plugin context in the self variable
var self = this,
// Instantiates a new variable that will be used to hold a specific element's context
$self,
// Instantiates a new variable that will be used to determine the smoothScroll animation time duration
duration;
// Event delegation that looks for any clicks on list item elements inside of the HTML element calling the plugin
this.element.on("click.tocify", "li", function(event) {
if(self.options.history) {
window.location.hash = $(this).attr("data-unique");
}
// Removes highlighting from all of the list item's
self.element.find("." + self.focusClass).removeClass(self.focusClass);
// Highlights the current list item that was clicked
$(this).addClass(self.focusClass);
// If the showAndHide option is true
if(self.options.showAndHide) {
var elem = $('li[data-unique="' + $(this).attr("data-unique") + '"]');
self._triggerShow(elem);
}
self._scrollTo($(this));
});
// Mouseenter and Mouseleave event handlers for the list item's within the HTML element calling the plugin
this.element.find("li").on({
// Mouseenter event handler
"mouseenter.tocify": function() {
// Adds a hover CSS class to the current list item
$(this).addClass(self.hoverClass);
// Makes sure the cursor is set to the pointer icon
$(this).css("cursor", "pointer");
},
// Mouseleave event handler
"mouseleave.tocify": function() {
if(self.options.theme !== "bootstrap") {
// Removes the hover CSS class from the current list item
$(this).removeClass(self.hoverClass);
}
}
});
// Reset height cache on scroll
$(window).on('resize', function() {
self.calculateHeights();
});
// Window scroll event handler
$(window).on("scroll.tocify", function() {
// Once all animations on the page are complete, this callback function will be called
$("html, body").promise().done(function() {
// Local variables
// Stores how far the user has scrolled
var winScrollTop = $(window).scrollTop(),
// Stores the height of the window
winHeight = $(window).height(),
// Stores the height of the document
docHeight = $(document).height(),
scrollHeight = $("body")[0].scrollHeight,
// Instantiates a variable that will be used to hold a selected HTML element
elem,
lastElem,
lastElemOffset,
currentElem;
if(self.options.extendPage) {
// If the user has scrolled to the bottom of the page and the last toc item is not focused
if((self.webkit && winScrollTop >= scrollHeight - winHeight - self.options.extendPageOffset) || (!self.webkit && winHeight + winScrollTop > docHeight - self.options.extendPageOffset)) {
if(!$(extendPageClass).length) {
lastElem = $('div[data-unique="' + $(itemClass).last().attr("data-unique") + '"]');
if(!lastElem.length) return;
// Gets the top offset of the page header that is linked to the last toc item
lastElemOffset = lastElem.offset().top;
// Appends a div to the bottom of the page and sets the height to the difference of the window scrollTop and the last element's position top offset
$(self.options.context).append($("<div />", {
"class": extendPageClassName,
"height": Math.abs(lastElemOffset - winScrollTop) + "px",
"data-unique": extendPageClassName
}));
if(self.extendPageScroll) {
currentElem = self.element.find('li.active');
self._scrollTo($("div[data-unique=" + currentElem.attr("data-unique") + "]"));
}
}
}
}
// The zero timeout ensures the following code is run after the scroll events
setTimeout(function() {
// _Local variables_
// Stores the distance to the closest anchor
var // Stores the index of the closest anchor
closestAnchorIdx = null,
anchorText;
// if never calculated before, calculate and cache the heights
if (self.cachedHeights.length == 0) {
self.calculateHeights();
}
var scrollTop = $(window).scrollTop();
// Determines the index of the closest anchor
self.cachedAnchors.each(function(idx) {
if (self.cachedHeights[idx] - scrollTop < 0) {
closestAnchorIdx = idx;
} else {
return false;
}
});
anchorText = $(self.cachedAnchors[closestAnchorIdx]).attr("data-unique");
// Stores the list item HTML element that corresponds to the currently traversed anchor tag
elem = $('li[data-unique="' + anchorText + '"]');
// If the `highlightOnScroll` option is true and a next element is found
if(self.options.highlightOnScroll && elem.length && !elem.hasClass(self.focusClass)) {
// Removes highlighting from all of the list item's
self.element.find("." + self.focusClass).removeClass(self.focusClass);
// Highlights the corresponding list item
elem.addClass(self.focusClass);
// Scroll to highlighted element's header
var tocifyWrapper = self.tocifyWrapper;
var scrollToElem = $(elem).closest('.tocify-header');
var elementOffset = scrollToElem.offset().top,
wrapperOffset = tocifyWrapper.offset().top;
var offset = elementOffset - wrapperOffset;
if (offset >= $(window).height()) {
var scrollPosition = offset + tocifyWrapper.scrollTop();
tocifyWrapper.scrollTop(scrollPosition);
} else if (offset < 0) {
tocifyWrapper.scrollTop(0);
}
}
if(self.options.scrollHistory) {
// IF STATEMENT ADDED BY ROBERT
if(window.location.hash !== "#" + anchorText && anchorText !== undefined) {
if(history.replaceState) {
history.replaceState({}, "", "#" + anchorText);
// provide a fallback
} else {
scrollV = document.body.scrollTop;
scrollH = document.body.scrollLeft;
location.hash = "#" + anchorText;
document.body.scrollTop = scrollV;
document.body.scrollLeft = scrollH;
}
}
}
// If the `showAndHideOnScroll` option is true
if(self.options.showAndHideOnScroll && self.options.showAndHide) {
self._triggerShow(elem, true);
}
}, 0);
});
});
},
// calculateHeights
// ----
// ADDED BY ROBERT
calculateHeights: function() {
var self = this;
self.cachedHeights = [];
self.cachedAnchors = [];
var anchors = $(self.options.context).find("div[data-unique]");
anchors.each(function(idx) {
var distance = (($(this).next().length ? $(this).next() : $(this)).offset().top - self.options.highlightOffset);
self.cachedHeights[idx] = distance;
});
self.cachedAnchors = anchors;
},
// Show
// ----
// Opens the current sub-header
show: function(elem, scroll) {
// Stores the plugin context in the `self` variable
var self = this,
element = elem;
// If the sub-header is not already visible
if (!elem.is(":visible")) {
// If the current element does not have any nested subheaders, is not a header, and its parent is not visible
if(!elem.find(subheaderClass).length && !elem.parent().is(headerClass) && !elem.parent().is(":visible")) {
// Sets the current element to all of the subheaders within the current header
elem = elem.parents(subheaderClass).add(elem);
}
// If the current element does not have any nested subheaders and is not a header
else if(!elem.children(subheaderClass).length && !elem.parent().is(headerClass)) {
// Sets the current element to the closest subheader
elem = elem.closest(subheaderClass);
}
//Determines what jQuery effect to use
switch (self.options.showEffect) {
//Uses `no effect`
case "none":
elem.show();
break;
//Uses the jQuery `show` special effect
case "show":
elem.show(self.options.showEffectSpeed);
break;
//Uses the jQuery `slideDown` special effect
case "slideDown":
elem.slideDown(self.options.showEffectSpeed);
break;
//Uses the jQuery `fadeIn` special effect
case "fadeIn":
elem.fadeIn(self.options.showEffectSpeed);
break;
//If none of the above options were passed, then a `jQueryUI show effect` is expected
default:
elem.show();
break;
}
}
// If the current subheader parent element is a header
if(elem.parent().is(headerClass)) {
// Hides all non-active sub-headers
self.hide($(subheaderClass).not(elem));
}
// If the current subheader parent element is not a header
else {
// Hides all non-active sub-headers
self.hide($(subheaderClass).not(elem.closest(headerClass).find(subheaderClass).not(elem.siblings())));
}
// Maintains chainablity
return self;
},
// Hide
// ----
// Closes the current sub-header
hide: function(elem) {
// Stores the plugin context in the `self` variable
var self = this;
//Determines what jQuery effect to use
switch (self.options.hideEffect) {
// Uses `no effect`
case "none":
elem.hide();
break;
// Uses the jQuery `hide` special effect
case "hide":
elem.hide(self.options.hideEffectSpeed);
break;
// Uses the jQuery `slideUp` special effect
case "slideUp":
elem.slideUp(self.options.hideEffectSpeed);
break;
// Uses the jQuery `fadeOut` special effect
case "fadeOut":
elem.fadeOut(self.options.hideEffectSpeed);
break;
// If none of the above options were passed, then a `jqueryUI hide effect` is expected
default:
elem.hide();
break;
}
// Maintains chainablity
return self;
},
// _triggerShow
// ------------
// Determines what elements get shown on scroll and click
_triggerShow: function(elem, scroll) {
var self = this;
// If the current element's parent is a header element or the next element is a nested subheader element
if(elem.parent().is(headerClass) || elem.next().is(subheaderClass)) {
// Shows the next sub-header element
self.show(elem.next(subheaderClass), scroll);
}
// If the current element's parent is a subheader element
else if(elem.parent().is(subheaderClass)) {
// Shows the parent sub-header element
self.show(elem.parent(), scroll);
}
// Maintains chainability
return self;
},
// _addCSSClasses
// --------------
// Adds CSS classes to the newly generated table of contents HTML
_addCSSClasses: function() {
// If the user wants a jqueryUI theme
if(this.options.theme === "jqueryui") {
this.focusClass = "ui-state-default";
this.hoverClass = "ui-state-hover";
//Adds the default styling to the dropdown list
this.element.addClass("ui-widget").find(".toc-title").addClass("ui-widget-header").end().find("li").addClass("ui-widget-content");
}
// If the user wants a twitterBootstrap theme
else if(this.options.theme === "bootstrap") {
this.element.find(headerClass + "," + subheaderClass).addClass("nav nav-list");
this.focusClass = "active";
}
// If a user does not want a prebuilt theme
else {
// Adds more neutral classes (instead of jqueryui)
this.focusClass = tocFocusClassName;
this.hoverClass = tocHoverClassName;
}
//Maintains chainability
return this;
},
// setOption
// ---------
// Sets a single Tocify option after the plugin is invoked
setOption: function() {
// Calls the jQueryUI Widget Factory setOption method
$.Widget.prototype._setOption.apply(this, arguments);
},
// setOptions
// ----------
// Sets a single or multiple Tocify options after the plugin is invoked
setOptions: function() {
// Calls the jQueryUI Widget Factory setOptions method
$.Widget.prototype._setOptions.apply(this, arguments);
},
// _scrollTo
// ---------
// Scrolls to a specific element
_scrollTo: function(elem) {
var self = this,
duration = self.options.smoothScroll || 0,
scrollTo = self.options.scrollTo;
// Once all animations on the page are complete, this callback function will be called
$("html, body").promise().done(function() {
// Animates the html and body element scrolltops
$("html, body").animate({
// Sets the jQuery `scrollTop` to the top offset of the HTML div tag that matches the current list item's `data-unique` tag
"scrollTop": $('div[data-unique="' + elem.attr("data-unique") + '"]').next().offset().top - ($.isFunction(scrollTo) ? scrollTo.call() : scrollTo) + "px"
}, {
// Sets the smoothScroll animation time duration to the smoothScrollSpeed option
"duration": duration
});
});
// Maintains chainability
return self;
}
});
})); //end of plugin
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