Add support for JS overrides

2 files changed, 166 insertions, 0 deletions

diff --git a/assets/images/logo.psd b/assets/images/logo.psd
new file mode 100644
index 0000000..4243d51
--- /dev/null
+++ b/assets/images/logo.psd
diff --git a/assets/javascripts/app/_lang.js b/assets/javascripts/app/_lang.js
new file mode 100644
index 0000000..b2b31b7
--- /dev/null
+++ b/assets/javascripts/app/_lang.js
@@ -0,0 +1,166 @@
+//= require ../lib/_jquery
+
+/*
+Copyright 2008-2013 Concur Technologies, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License"); you may
+not use this file except in compliance with the License. You may obtain
+a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+License for the specific language governing permissions and limitations
+under the License.
+*/
+(function (global) {
+  'use strict';
+
+  var languages = [];
+    
+  global.setupLanguages = setupLanguages;
+  global.activateLanguage = activateLanguage;
+
+  function activateLanguage(language) {
+    if (!language) return;
+    if (language === "") return;
+
+    $(".lang-selector a").removeClass('active');
+    $(".lang-selector a[data-language-name='" + language + "']").addClass('active');
+    for (var i=0; i < languages.length; i++) {
+      $(".highlight." + languages[i]).hide();
+      $(".lang-specific." + languages[i]).hide();
+    }
+    $(".highlight." + language).show();
+    $(".lang-specific." + language).show();
+
+    global.toc.calculateHeights();
+
+    // scroll to the new location of the position
+    if ($(window.location.hash).get(0)) {
+      $(window.location.hash).get(0).scrollIntoView(true);
+    }
+  }
+
+  // parseURL and stringifyURL are from https://github.com/sindresorhus/query-string
+  // MIT licensed
+  // https://github.com/sindresorhus/query-string/blob/7bee64c16f2da1a326579e96977b9227bf6da9e6/license
+  function parseURL(str) {
+    if (typeof str !== 'string') {
+      return {};
+    }
+
+    str = str.trim().replace(/^(\?|#|&)/, '');
+
+    if (!str) {
+      return {};
+    }
+
+    return str.split('&').reduce(function (ret, param) {
+      var parts = param.replace(/\+/g, ' ').split('=');
+      var key = parts[0];
+      var val = parts[1];
+
+      key = decodeURIComponent(key);
+      // missing `=` should be `null`:
+      // http://w3.org/TR/2012/WD-url-20120524/#collect-url-parameters
+      val = val === undefined ? null : decodeURIComponent(val);
+
+      if (!ret.hasOwnProperty(key)) {
+        ret[key] = val;
+      } else if (Array.isArray(ret[key])) {
+        ret[key].push(val);
+      } else {
+        ret[key] = [ret[key], val];
+      }
+
+      return ret;
+    }, {});
+  };
+
+  function stringifyURL(obj) {
+    return obj ? Object.keys(obj).sort().map(function (key) {
+      var val = obj[key];
+
+      if (Array.isArray(val)) {
+        return val.sort().map(function (val2) {
+          return encodeURIComponent(key) + '=' + encodeURIComponent(val2);
+        }).join('&');
+      }
+
+      return encodeURIComponent(key) + '=' + encodeURIComponent(val);
+    }).join('&') : '';
+  };
+
+  // gets the language set in the query string
+  function getLanguageFromQueryString() {
+    if (location.search.length >= 1) {
+      var language = parseURL(location.search).language
+      if (language) {
+        return language;
+      } else if (jQuery.inArray(location.search.substr(1), languages) != -1) {
+        return location.search.substr(1);
+      }
+    }
+
+    return false;
+  }
+
+  // returns a new query string with the new language in it
+  function generateNewQueryString(language) {
+    var url = parseURL(location.search);
+    if (url.language) {
+      url.language = language;
+      return stringifyURL(url);
+    }
+    return language;
+  }
+
+  // if a button is clicked, add the state to the history
+  function pushURL(language) {
+    if (!history) { return; }
+    var hash = window.location.hash;
+    if (hash) {
+      hash = hash.replace(/^#+/, '');
+    }
+    history.pushState({}, '', '?' + generateNewQueryString(language) + '#' + hash);
+
+    // save language as next default
+    localStorage.setItem("language", language);
+  }
+
+  function setupLanguages(l) {
+    var defaultLanguage = localStorage.getItem("language");
+
+    languages = l;
+
+    var presetLanguage = getLanguageFromQueryString();
+    if (presetLanguage) {
+      // the language is in the URL, so use that language!
+      activateLanguage(presetLanguage);
+
+      localStorage.setItem("language", presetLanguage);
+    } else if ((defaultLanguage !== null) && (jQuery.inArray(defaultLanguage, languages) != -1)) {
+      // the language was the last selected one saved in localstorage, so use that language!
+      activateLanguage(defaultLanguage);
+    } else {
+      // no language selected, so use the default
+      activateLanguage(languages[0]);
+    }
+  }
+
+  // if we click on a language tab, activate that language
+  $(function() {
+    $(".lang-selector a").on("click", function() {
+      var language = $(this).data("language-name");
+      pushURL(language);
+      activateLanguage(language);
+      return false;
+    });
+    window.onpopstate = function() {
+      activateLanguage(getLanguageFromQueryString());
+    };
+  });
+})(window);