1 files changed, 260 insertions, 0 deletions
diff --git a/themes/LoveIt/assets/lib/mapbox-gl/mapbox-gl-language.js b/themes/LoveIt/assets/lib/mapbox-gl/mapbox-gl-language.js
new file mode 100644
index 0000000..bda7206
--- /dev/null
+++ b/themes/LoveIt/assets/lib/mapbox-gl/mapbox-gl-language.js
@@ -0,0 +1,260 @@
+/**
+ * Create a new [Mapbox GL JS plugin](https://www.mapbox.com/blog/build-mapbox-gl-js-plugins/) that
+ * modifies the layers of the map style to use the 'text-field' that matches the browser language.
+ * @constructor
+ * @param {object} options - Options to configure the plugin.
+ * @param {string[]} [options.supportedLanguages] - List of supported languages
+ * @param {Function} [options.languageTransform] - Custom style transformation to apply
+ * @param {RegExp} [options.languageField=/^\{name/] - RegExp to match if a text-field is a language field
+ * @param {Function} [options.getLanguageField] - Given a language choose the field in the vector tiles
+ * @param {string} [options.languageSource] - Name of the source that contains the different languages.
+ * @param {string} [options.defaultLanguage] - Name of the default language to initialize style after loading.
+ * @param {string[]} [options.excludedLayerIds] - Name of the layers that should be excluded from translation.
+ */
+function MapboxLanguage(options) {
+  options = Object.assign({}, options);
+  if (!(this instanceof MapboxLanguage)) {
+    throw new Error('MapboxLanguage needs to be called with the new keyword');
+  }
+
+  this.setLanguage = this.setLanguage.bind(this);
+  this._initialStyleUpdate = this._initialStyleUpdate.bind(this);
+
+  this._defaultLanguage = options.defaultLanguage;
+  this._isLanguageField = options.languageField || /^\{name/;
+  this._getLanguageField = options.getLanguageField || function nameField(language) {
+    return language === 'mul' ? '{name}' : '{name_' + language + '}';
+  };
+  this._languageSource = options.languageSource || null;
+  this._languageTransform = options.languageTransform || function (style, language) {
+    if (language === 'ar') {
+      return noSpacing(style);
+    } else {
+      return standardSpacing(style);
+    }
+  };
+  this._excludedLayerIds = options.excludedLayerIds || [];
+  this.supportedLanguages = options.supportedLanguages || ['ar', 'en', 'es', 'fr', 'de', 'ja', 'ko', 'mul', 'pt', 'ru', 'zh'];
+}
+
+function standardSpacing(style) {
+  var changedLayers = style.layers.map(function (layer) {
+    if (!(layer.layout || {})['text-field']) return layer;
+    var spacing = 0;
+    if (layer['source-layer'] === 'state_label') {
+      spacing = 0.15;
+    }
+    if (layer['source-layer'] === 'marine_label') {
+      if (/-lg/.test(layer.id)) {
+        spacing = 0.25;
+      }
+      if (/-md/.test(layer.id)) {
+        spacing = 0.15;
+      }
+      if (/-sm/.test(layer.id)) {
+        spacing = 0.1;
+      }
+    }
+    if (layer['source-layer'] === 'place_label') {
+      if (/-suburb/.test(layer.id)) {
+        spacing = 0.15;
+      }
+      if (/-neighbour/.test(layer.id)) {
+        spacing = 0.1;
+      }
+      if (/-islet/.test(layer.id)) {
+        spacing = 0.01;
+      }
+    }
+    if (layer['source-layer'] === 'airport_label') {
+      spacing = 0.01;
+    }
+    if (layer['source-layer'] === 'rail_station_label') {
+      spacing = 0.01;
+    }
+    if (layer['source-layer'] === 'poi_label') {
+      if (/-scalerank/.test(layer.id)) {
+        spacing = 0.01;
+      }
+    }
+    if (layer['source-layer'] === 'road_label') {
+      if (/-label-/.test(layer.id)) {
+        spacing = 0.01;
+      }
+      if (/-shields/.test(layer.id)) {
+        spacing = 0.05;
+      }
+    }
+    return Object.assign({}, layer, {
+      layout: Object.assign({}, layer.layout, {
+        'text-letter-spacing': spacing
+      })
+    });
+  });
+
+  return Object.assign({}, style, {
+    layers: changedLayers
+  });
+}
+
+function noSpacing(style) {
+  var changedLayers = style.layers.map(function (layer) {
+    if (!(layer.layout || {})['text-field']) return layer;
+    var spacing = 0;
+    return Object.assign({}, layer, {
+      layout: Object.assign({}, layer.layout, {
+        'text-letter-spacing': spacing
+      })
+    });
+  });
+
+  return Object.assign({}, style, {
+    layers: changedLayers
+  });
+}
+
+function isNameStringField(isLangField, property) {
+  return typeof property === 'string' && isLangField.test(property);
+}
+
+function isNameFunctionField(isLangField, property) {
+  return property.stops && property.stops.filter(function (stop) {
+    return isLangField.test(stop[1]);
+  }).length > 0;
+}
+
+function adaptPropertyLanguage(isLangField, property, languageFieldName) {
+  if (isNameStringField(isLangField, property)) return languageFieldName;
+  if (isNameFunctionField(isLangField, property)) {
+    var newStops = property.stops.map(function (stop) {
+      if (isLangField.test(stop[1])) {
+        return [stop[0], languageFieldName];
+      }
+      return stop;
+    });
+    return Object.assign({}, property, {
+      stops: newStops
+    });
+  }
+  return property;
+}
+
+function changeLayerTextProperty(isLangField, layer, languageFieldName, excludedLayerIds) {
+  if (layer.layout && layer.layout['text-field'] && excludedLayerIds.indexOf(layer.id) === -1) {
+    return Object.assign({}, layer, {
+      layout: Object.assign({}, layer.layout, {
+        'text-field': adaptPropertyLanguage(isLangField, layer.layout['text-field'], languageFieldName)
+      })
+    });
+  }
+  return layer;
+}
+
+function findStreetsSource(style) {
+  var sources = Object.keys(style.sources).filter(function (sourceName) {
+    var source = style.sources[sourceName];
+    return /mapbox-streets-v\d/.test(source.url);
+  });
+  return sources[0];
+}
+
+/**
+ * Explicitly change the language for a style.
+ * @param {object} style - Mapbox GL style to modify
+ * @param {string} language - The language iso code
+ * @returns {object} the modified style
+ */
+MapboxLanguage.prototype.setLanguage = function (style, language) {
+  if (this.supportedLanguages.indexOf(language) < 0) throw new Error('Language ' + language + ' is not supported');
+  var streetsSource = this._languageSource || findStreetsSource(style);
+  if (!streetsSource) return style;
+
+  var field = this._getLanguageField(language);
+  var isLangField = this._isLanguageField;
+  var excludedLayerIds = this._excludedLayerIds;
+  var changedLayers = style.layers.map(function (layer) {
+    if (layer.source === streetsSource) return changeLayerTextProperty(isLangField, layer, field, excludedLayerIds);
+    return layer;
+  });
+
+  var languageStyle = Object.assign({}, style, {
+    layers: changedLayers
+  });
+
+  return this._languageTransform(languageStyle, language);
+};
+
+MapboxLanguage.prototype._initialStyleUpdate = function () {
+  var style = this._map.getStyle();
+  var language = this._defaultLanguage || browserLanguage(this.supportedLanguages);
+
+  // We only update the style once
+  this._map.off('styledata', this._initialStyleUpdate);
+  this._map.setStyle(this.setLanguage(style, language));
+};
+
+function browserLanguage(supportedLanguages) {
+  var language = navigator.languages ? navigator.languages[0] : (navigator.language || navigator.userLanguage);
+  var parts = language.split('-');
+  var languageCode = language;
+  if (parts.length > 1) {
+    languageCode = parts[0];
+  }
+  if (supportedLanguages.indexOf(languageCode) > -1) {
+    return languageCode;
+  }
+  return null;
+}
+
+MapboxLanguage.prototype.onAdd = function (map) {
+  this._map = map;
+  this._map.on('styledata', this._initialStyleUpdate);
+  this._container = document.createElement('div');
+  return this._container;
+};
+
+MapboxLanguage.prototype.onRemove = function () {
+  this._map.off('styledata', this._initialStyleUpdate);
+  this._map = undefined;
+};
+
+function ie11Polyfill() {
+  if (typeof Object.assign != 'function') {
+    // Must be writable: true, enumerable: false, configurable: true
+    Object.defineProperty(Object, 'assign', {
+      // eslint-disable-next-line no-unused-vars
+      value: function assign(target, varArgs) { // .length of function is 2
+        // eslint-disable-next-line strict
+        'use strict';
+        if (target === null) { // TypeError if undefined or null
+          throw new TypeError('Cannot convert undefined or null to object');
+        }
+
+        var to = Object(target);
+
+        for (var index = 1; index < arguments.length; index++) {
+          var nextSource = arguments[index];
+
+          if (nextSource !== null) { // Skip over if undefined or null
+            for (var nextKey in nextSource) {
+              // Avoid bugs when hasOwnProperty is shadowed
+              if (Object.prototype.hasOwnProperty.call(nextSource, nextKey)) {
+                to[nextKey] = nextSource[nextKey];
+              }
+            }
+          }
+        }
+        return to;
+      },
+      writable: true,
+      configurable: true
+    });
+  }
+}
+
+if (typeof module !== 'undefined' && typeof module.exports !== 'undefined') {
+  module.exports = MapboxLanguage;
+} else {
+  ie11Polyfill();
+  window.MapboxLanguage = MapboxLanguage;
+}