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(function($) {
'use strict';
// Filter posts by using their categories on categories page : `/categories`
/**
* CategoriesFilter
* @param {String} categoriesArchivesElem
* @constructor
*/
var CategoriesFilter = function(categoriesArchivesElem) {
this.$form = $(categoriesArchivesElem).find('#filter-form');
this.$inputSearch = $(categoriesArchivesElem).find('input[name=category]');
// Element where result of the filter are displayed
this.$archiveResult = $(categoriesArchivesElem).find('.archive-result');
this.$posts = $(categoriesArchivesElem).find('.archive');
this.$categories = $(categoriesArchivesElem).find('.category-anchor');
this.posts = categoriesArchivesElem + ' .archive';
this.categories = categoriesArchivesElem + ' .category-anchor';
// Html data attribute without `data-` of `.archive` element
// which contains the name of category
this.dataCategory = 'category';
// Html data attribute without `data-` of `.archive` element
// which contains the name of parent's categories
this.dataParentCategories = 'parent-categories';
this.messages = {
zero: this.$archiveResult.data('message-zero'),
one: this.$archiveResult.data('message-one'),
other: this.$archiveResult.data('message-other')
};
};
CategoriesFilter.prototype = {
/**
* Run CategoriesFilter feature
* @return {void}
*/
run: function() {
var self = this;
self.$inputSearch.keyup(function() {
self.filter(self.getSearch());
});
// Block submit action
self.$form.submit(function(e) {
e.preventDefault();
});
},
/**
* Get the search entered by user
* @returns {String} The name of the category
*/
getSearch: function() {
return this.$inputSearch.val().toLowerCase();
},
/**
* Show related posts form a category and hide the others
* @param {string} category - The name of the category
* @return {void}
*/
filter: function(category) {
if (category === '') {
this.showAll();
this.showResult(-1);
}
else {
this.hideAll();
this.showPosts(category);
this.showResult(this.countCategories(category));
}
},
/**
* Display results of the search
* @param {Number} numbCategories - The number of categories found
* @return {void}
*/
showResult: function(numbCategories) {
if (numbCategories === -1) {
this.$archiveResult.html('').hide();
}
else if (numbCategories === 0) {
this.$archiveResult.html(this.messages.zero).show();
}
else if (numbCategories === 1) {
this.$archiveResult.html(this.messages.one).show();
}
else {
this.$archiveResult.html(this.messages.other.replace(/\{n\}/, numbCategories)).show();
}
},
/**
* Count number of categories
* @param {String} category - The name of theThe date of the post category
* @returns {Number} The number of categories found
*/
countCategories: function(category) {
return $(this.posts + '[data-' + this.dataCategory + '*=\'' + category + '\']').length;
},
/**
* Show all posts from a category
* @param {String} category - The name of the category
* @return {void}
*/
showPosts: function(category) {
var self = this;
var parents;
var categories = self.categories + '[data-' + self.dataCategory + '*=\'' + category + '\']';
var posts = self.posts + '[data-' + self.dataCategory + '*=\'' + category + '\']';
if (self.countCategories(category) > 0) {
// Check if selected categories have parents
if ($(categories + '[data-' + self.dataParentCategories + ']').length) {
// Get all categories that matches search
$(categories).each(function() {
// Get all its parents categories name
parents = $(this).attr('data-' + self.dataParentCategories).split(',');
// Show only the title of the parents's categories and hide their posts
parents.forEach(function(parent) {
var dataAttr = '[data-' + self.dataCategory + '=\'' + parent + '\']';
$(self.categories + dataAttr).show();
$(self.posts + dataAttr).show();
$(self.posts + dataAttr + ' > .archive-posts > .archive-post').hide();
});
});
}
}
// Show categories and related posts found
$(categories).show();
$(posts).show();
$(posts + ' > .archive-posts > .archive-post').show();
},
/**
* Show all categories and all posts
* @return {void}
*/
showAll: function() {
this.$categories.show();
this.$posts.show();
$(this.posts + ' > .archive-posts > .archive-post').show();
},
/**
* Hide all categories and all posts
* @return {void}
*/
hideAll: function() {
this.$categories.hide();
this.$posts.hide();
}
};
$(document).ready(function() {
if ($('#categories-archives').length) {
var categoriesFilter = new CategoriesFilter('#categories-archives');
categoriesFilter.run();
}
});
})(jQuery);
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