Improve display of alternative download sources

[rails.git] / app / assets / javascripts / leaflet.key.js

diff --git a/app/assets/javascripts/leaflet.key.js b/app/assets/javascripts/leaflet.key.js
index 4cab964c9e178c0f166609247fef9b8f9dd89472..58bfbf6d2aa07644d98585240f1b9d948883c946 100644 (file)
--- a/app/assets/javascripts/leaflet.key.js
+++ b/app/assets/javascripts/leaflet.key.js
@@ -1,25 +1,89 @@
-L.OSM.Key = L.Control.extend({
-  onAdd: function (map) {
-    this._map = map;
-    this._initLayout();
-    return this.$container[0];
-  },
+L.OSM.key = function (options) {
+  var control = L.control(options);
 
-  _initLayout: function () {
-    var map = this._map;
-
-    this.$container = $('<div>')
+  control.onAdd = function (map) {
+    var $container = $('<div>')
       .attr('class', 'control-key');
 
-    var link = $('<a>')
+    var button = $('<a>')
       .attr('class', 'control-button')
       .attr('href', '#')
-      .attr('title', 'Map Key')
       .html('<span class="icon key"></span>')
-      .appendTo(this.$container);
-  }
-});
+      .on('click', toggle)
+      .appendTo($container);
+
+    var $ui = $('<div>')
+      .attr('class', 'key-ui');
+
+    $('<div>')
+      .attr('class', 'sidebar_heading')
+      .appendTo($ui)
+      .append(
+        $('<span>')
+          .text(I18n.t('javascripts.close'))
+          .attr('class', 'icon close')
+          .bind('click', toggle))
+      .append(
+        $('<h4>')
+          .text(I18n.t('javascripts.key.title')));
+
+    var $section = $('<div>')
+      .attr('class', 'section')
+      .appendTo($ui);
+
+    options.sidebar.addPane($ui);
+
+    $ui
+      .on('show', shown)
+      .on('hide', hidden);
+
+    map.on('baselayerchange', updateButton);
+
+    updateButton();
+
+    function shown() {
+      map.on('zoomend baselayerchange', update);
+      $section.load('/key', update);
+    }
+
+    function hidden() {
+      map.off('zoomend baselayerchange', update);
+    }
+
+    function toggle(e) {
+      e.stopPropagation();
+      e.preventDefault();
+      if (!button.hasClass('disabled')) {
+        options.sidebar.togglePane($ui, button);
+      }
+      $('.leaflet-control .control-button').tooltip('hide');
+    }
+
+    function updateButton() {
+      var disabled = map.getMapBaseLayerId() !== 'mapnik'
+      button
+        .toggleClass('disabled', disabled)
+        .attr('data-original-title', I18n.t(disabled ?
+          'javascripts.key.tooltip_disabled' :
+          'javascripts.key.tooltip'))
+    }
+
+    function update() {
+      var layer = map.getMapBaseLayerId(),
+        zoom = map.getZoom();
+
+      $('.mapkey-table-entry').each(function () {
+        var data = $(this).data();
+        if (layer == data.layer && zoom >= data.zoomMin && zoom <= data.zoomMax) {
+          $(this).show();
+        } else {
+          $(this).hide();
+        }
+      });
+    }
+
+    return $container[0];
+  };
 
-L.OSM.key = function(options) {
-  return new L.OSM.Key(options);
+  return control;
 };