Update to lunr.js v2.3.8

1 files changed, 103 insertions, 0 deletions

diff --git a/assets/js/slate/app/_search.js b/assets/js/slate/app/_search.js
new file mode 100644
index 0000000..da51dbb
--- /dev/null
+++ b/assets/js/slate/app/_search.js
@@ -0,0 +1,103 @@
+//= require ../lib/_lunr
+//= require ../lib/_jquery
+//= require ../lib/_jquery.highlight
+; (function () {
+  'use strict';
+
+  var content, searchResults;
+  var highlightOpts = { element: 'span', className: 'search-highlight' };
+  var searchDelay = 0;
+  var timeoutHandle = 0;
+  var index;
+
+  $(populate);
+  $(bind);
+
+  function populate() {
+    index = lunr(function () {
+      this.ref('id');
+      this.field('title', { boost: 10 });
+      this.field('body')
+      this.pipeline.add(lunr.trimmer, lunr.stopWordFilter);
+      var that = this;
+
+      $('h1, h2').each(function () {
+        var title = $(this);
+        var body = title.nextUntil('h1, h2');
+        that.add({
+          id: title.prop('id'),
+          title: title.text(),
+          body: body.text()
+        });
+      });
+
+      determineSearchDelay(this);
+
+    })
+  }
+
+
+  function determineSearchDelay(index) {
+    if (index._documents.length > 5000) {
+      searchDelay = 300;
+    }
+  }
+
+  function bind() {
+    content = $('.content');
+    searchResults = $('.search-results');
+
+    $('#input-search').on('keyup', function (e) {
+      var wait = function () {
+        return function (executingFunction, waitTime) {
+          clearTimeout(timeoutHandle);
+          timeoutHandle = setTimeout(executingFunction, waitTime);
+        };
+      }();
+      wait(function () {
+        search(e);
+      }, searchDelay);
+    });
+  }
+
+  function search(event) {
+
+    var searchInput = $('#input-search')[0];
+
+    unhighlight();
+    searchResults.addClass('visible');
+
+    // ESC clears the field
+    if (event.keyCode === 27) searchInput.value = '';
+
+    if (searchInput.value) {
+      var results = index.search(searchInput.value).filter(function (r) {
+        return r.score > 0.0001;
+      });
+
+      if (results.length) {
+        searchResults.empty();
+        $.each(results, function (index, result) {
+          var elem = document.getElementById(result.ref);
+          searchResults.append("<li><a href='#" + result.ref + "'>" + $(elem).text() + "</a></li>");
+        });
+        highlight.call(searchInput);
+      } else {
+        searchResults.html('<li></li>');
+        $('.search-results li').text('No Results Found for "' + searchInput.value + '"');
+      }
+    } else {
+      unhighlight();
+      searchResults.removeClass('visible');
+    }
+  }
+
+  function highlight() {
+    if (this.value) content.highlight(this.value, highlightOpts);
+  }
+
+  function unhighlight() {
+    content.unhighlight(highlightOpts);
+  }
+})();
+