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(function() {
var SOURCES = window.TEXT_VARIABLES.sources;
function queryString() {
// This function is anonymous, is executed immediately and
// the return value is assigned to QueryString!
var i = 0, queryObj = {}, pair;
var queryStr = window.location.search.substring(1);
var queryArr = queryStr.split('&');
for (i = 0; i < queryArr.length; i++) {
pair = queryArr[i].split('=');
// If first entry with this name
if (typeof queryObj[pair[0]] === 'undefined') {
queryObj[pair[0]] = pair[1];
// If second entry with this name
} else if (typeof queryObj[pair[0]] === 'string') {
queryObj[pair[0]] = [queryObj[pair[0]], pair[1]];
// If third or later entry with this name
} else {
queryObj[pair[0]].push(pair[1]);
}
}
return queryObj;
}
var setUrlQuery = (function() {
var baseUrl = window.location.href.split('?')[0];
return function(query) {
if (typeof query === 'string') {
window.history.replaceState(null, '', baseUrl + query);
} else {
window.history.replaceState(null, '', baseUrl);
}
};
})();
window.Lazyload.js(SOURCES.jquery, function() {
var $tags = $('.js-tags');
var $articleTags = $tags.find('button');
var $tagShowAll = $tags.find('.tag-button--all');
var $result = $('.js-result');
var $sections = $result.find('section');
var sectionArticles = [];
var $lastFocusButton = null;
var sectionTopArticleIndex = [];
var hasInit = false;
$sections.each(function() {
sectionArticles.push($(this).find('.item'));
});
function init() {
var i, index = 0;
for (i = 0; i < $sections.length; i++) {
sectionTopArticleIndex.push(index);
index += $sections.eq(i).find('.item').length;
}
sectionTopArticleIndex.push(index);
}
function searchButtonsByTag(_tag/*raw tag*/) {
if (!_tag) {
return $tagShowAll;
}
var _buttons = $articleTags.filter('[data-encode="' + _tag + '"]');
if (_buttons.length === 0) {
return $tagShowAll;
}
return _buttons;
}
function buttonFocus(target) {
if (target) {
target.addClass('focus');
$lastFocusButton && !$lastFocusButton.is(target) && $lastFocusButton.removeClass('focus');
$lastFocusButton = target;
}
}
function tagSelect (tag/*raw tag*/, target) {
var result = {}, $articles;
var i, j, k, _tag;
for (i = 0; i < sectionArticles.length; i++) {
$articles = sectionArticles[i];
for (j = 0; j < $articles.length; j++) {
if (tag === '' || tag === undefined) {
result[i] || (result[i] = {});
result[i][j] = true;
} else {
var tags = $articles.eq(j).data('tags').split(',');
for (k = 0; k < tags.length; k++) {
if (tags[k] === tag) {
result[i] || (result[i] = {});
result[i][j] = true; break;
}
}
}
}
}
for (i = 0; i < sectionArticles.length; i++) {
result[i] && $sections.eq(i).removeClass('d-none');
result[i] || $sections.eq(i).addClass('d-none');
for (j = 0; j < sectionArticles[i].length; j++) {
if (result[i] && result[i][j]) {
sectionArticles[i].eq(j).removeClass('d-none');
} else {
sectionArticles[i].eq(j).addClass('d-none');
}
}
}
hasInit || ($result.removeClass('d-none'), hasInit = true);
if (target) {
buttonFocus(target);
_tag = target.attr('data-encode');
if (_tag === '' || typeof _tag !== 'string') {
setUrlQuery();
} else {
setUrlQuery('?tag=' + _tag);
}
} else {
buttonFocus(searchButtonsByTag(tag));
}
}
var query = queryString(), _tag = query.tag;
init(); tagSelect(_tag);
$tags.on('click', 'button', function() {
tagSelect($(this).data('encode'), $(this));
});
});
})();
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