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var searchAttr = 'data-search-mode'; |
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function contains(a,m){ |
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return (a.textContent || a.innerText || "").toUpperCase().indexOf(m) !== -1; |
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}; |
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//on search |
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document.getElementById("nav-search").addEventListener("keyup", function(event) { |
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var search = this.value.toUpperCase(); |
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if (!search) { |
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//no search, show all results |
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document.documentElement.removeAttribute(searchAttr); |
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document.querySelectorAll("nav > ul > li:not(.level-hide)").forEach(function(elem) { |
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elem.style.display = "block"; |
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}); |
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if (typeof hideAllButCurrent === "function"){ |
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//let's do what ever collapse wants to do |
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hideAllButCurrent(); |
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} else { |
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//menu by default should be opened |
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document.querySelectorAll("nav > ul > li > ul li").forEach(function(elem) { |
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elem.style.display = "block"; |
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}); |
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} |
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} else { |
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//we are searching |
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document.documentElement.setAttribute(searchAttr, ''); |
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//show all parents |
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document.querySelectorAll("nav > ul > li").forEach(function(elem) { |
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elem.style.display = "block"; |
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}); |
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//hide all results |
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document.querySelectorAll("nav > ul > li > ul li").forEach(function(elem) { |
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elem.style.display = "none"; |
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}); |
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//show results matching filter |
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document.querySelectorAll("nav > ul > li > ul a").forEach(function(elem) { |
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if (!contains(elem.parentNode, search)) { |
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return; |
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} |
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elem.parentNode.style.display = "block"; |
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}); |
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//hide parents without children |
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document.querySelectorAll("nav > ul > li").forEach(function(parent) { |
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var countSearchA = 0; |
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parent.querySelectorAll("a").forEach(function(elem) { |
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if (contains(elem, search)) { |
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countSearchA++; |
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} |
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}); |
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var countUl = 0; |
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var countUlVisible = 0; |
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parent.querySelectorAll("ul").forEach(function(ulP) { |
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// count all elements that match the search |
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if (contains(ulP, search)) { |
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countUl++; |
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} |
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// count all visible elements |
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var children = ulP.children |
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for (i=0; i<children.length; i++) { |
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var elem = children[i]; |
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if (elem.style.display != "none") { |
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countUlVisible++; |
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} |
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} |
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}); |
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if (countSearchA == 0 && countUl === 0){ |
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//has no child at all and does not contain text |
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parent.style.display = "none"; |
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} else if(countSearchA == 0 && countUlVisible == 0){ |
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//has no visible child and does not contain text |
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parent.style.display = "none"; |
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} |
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}); |
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} |
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}); |