1 files changed, 97 insertions, 0 deletions
diff --git a/web-ui/app/js/search/results_highlighter.js b/web-ui/app/js/search/results_highlighter.js
new file mode 100644
index 00000000..831be0cd
--- /dev/null
+++ b/web-ui/app/js/search/results_highlighter.js
@@ -0,0 +1,97 @@
+/*
+ * Copyright (c) 2014 ThoughtWorks, Inc.
+ *
+ * Pixelated is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Pixelated is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Pixelated. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+define(
+  [
+    'flight/lib/component',
+    'page/events'
+  ], function (defineComponent, events) {
+
+    'use strict';
+
+    return defineComponent(resultsHighlighter);
+
+    function resultsHighlighter(){
+      this.defaultAttrs({
+        keywords: []
+      });
+
+      this.getKeywordsSearch = function (event, data) {
+        this.attr.keywords = data.query.split(' ').map(function(keyword) {
+          return keyword.toLowerCase();
+        });
+      };
+
+      this.highlightResults = function (event, data) {
+        var domIdent = data.where;
+        if(this.attr.keywords) {
+          _.each(this.attr.keywords, function (keyword) {
+            keyword = escapeRegExp(keyword);
+            $(domIdent).highlightRegex(new RegExp(keyword, 'i'), {
+              tagType:   'em',
+              className: 'search-highlight'
+            });
+          });
+        }
+      };
+
+      this.clearHighlights = function (event, data) {
+        this.attr.keywords = [];
+        _.each($('em.search-highlight'), function(highlighted) {
+          var jqueryHighlighted = $(highlighted);
+          var text = jqueryHighlighted.text();
+          jqueryHighlighted.replaceWith(text);
+        });
+      };
+
+      this.highlightString = function (string) {
+        _.each(this.attr.keywords, function (keyword) {
+          keyword = escapeRegExp(keyword);
+          var regex = new RegExp('(' + keyword + ')', 'ig');
+          string = string.replace(regex, '<em class="search-highlight">$1</em>');
+        });
+        return string;
+      };
+
+      /*
+       * Alter data.mail.textPlainBody to highlight each of this.attr.keywords
+       * and pass it back to the mail_view when done
+       */
+      this.highlightMailContent = function(ev, data){
+        var mail = data.mail;
+        mail.textPlainBody = this.highlightString(mail.textPlainBody);
+        this.trigger(document, events.mail.display, data);
+      };
+
+      /*
+       * Escapes the special charaters used regular expressions that
+       * would cause problems with strings in the RegExp constructor
+       */
+      function escapeRegExp(string){
+        return string.replace(/[.*+?^${}()|[\]\\]/g, "\\$&");
+      }
+
+      this.after('initialize', function () {
+        this.on(document, events.search.perform, this.getKeywordsSearch);
+        this.on(document, events.ui.tag.select, this.clearHighlights);
+        this.on(document, events.search.resetHighlight, this.clearHighlights);
+
+        this.on(document, events.search.highlightResults, this.highlightResults);
+        this.on(document, events.mail.highlightMailContent, this.highlightMailContent);
+      });
+    }
+});