Enable/disable some context-menu options conditional on zoom

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

diff --git a/app/assets/javascripts/leaflet.layers.js b/app/assets/javascripts/leaflet.layers.js
index 242f762857180c71046383373f907435d64216aa..d2928068d4d6a1ec1a754e0a081f75b90f4cf356 100644 (file)
--- a/app/assets/javascripts/leaflet.layers.js
+++ b/app/assets/javascripts/leaflet.layers.js
@@ -7,10 +7,10 @@ L.OSM.layers = function(options) {
     var $container = $('<div>')
       .attr('class', 'control-layers');
 
-    var link = $('<a>')
+    var button = $('<a>')
       .attr('class', 'control-button')
       .attr('href', '#')
-      .attr('title', 'Layers')
+      .attr('title', I18n.t('javascripts.map.layers.title'))
       .html('<span class="icon layers"></span>')
       .on('click', toggle)
       .appendTo($container);
@@ -18,32 +18,28 @@ L.OSM.layers = function(options) {
     var $ui = $('<div>')
       .attr('class', 'layers-ui');
 
-    $('<section>')
-       .appendTo($ui)
-       .append(
-          $('<a>')
-            .html('&raquo;')
-            .attr('class', 'close-button')
-            .attr('href', '#')
-            .bind('click', toggle))
-       .append(
-        $('<h2>')
+    $('<div>')
+      .attr('class', 'sidebar_heading')
+      .appendTo($ui)
+      .append(
+        $('<span>')
+          .text(I18n.t('javascripts.close'))
+          .attr('class', 'icon close')
+          .bind('click', toggle))
+      .append(
+        $('<h4>')
           .text(I18n.t('javascripts.map.layers.header')));
 
-    var baseSection = $('<section>')
-      .addClass('base-layers')
+    var baseSection = $('<div>')
+      .attr('class', 'section base-layers')
       .appendTo($ui);
 
-    $('<p>')
-      .text(I18n.t('javascripts.map.layers.base'))
-      .appendTo(baseSection);
-
-    list = $('<ul>')
+    var baseLayers = $('<ul>')
       .appendTo(baseSection);
 
     layers.forEach(function(layer) {
       var item = $('<li>')
-        .appendTo(list);
+        .appendTo(baseLayers);
 
       if (map.hasLayer(layer)) {
         item.addClass('active');
@@ -67,23 +63,33 @@ L.OSM.layers = function(options) {
 
         function shown() {
           miniMap.invalidateSize();
-          setView();
-          map.on('moveend', setView);
+          setView({animate: false});
+          map.on('moveend', moved);
         }
 
         function hide() {
-          map.off('moveend', setView);
+          map.off('moveend', moved);
         }
 
-        function setView() {
-          miniMap.setView(map.getCenter(), Math.max(map.getZoom() - 2, 0));
+        function moved() {
+          setView();
+        }
+
+        function setView(options) {
+          miniMap.setView(map.getCenter(), Math.max(map.getZoom() - 2, 0), options);
         }
       });
 
       var label = $('<label>')
-        .text(layer.options.name)
         .appendTo(item);
 
+      var input = $('<input>')
+         .attr('type', 'radio')
+         .prop('checked', map.hasLayer(layer))
+         .appendTo(label);
+
+      label.append(layer.options.name);
+
       item.on('click', function() {
         layers.forEach(function(other) {
           if (other === layer) {
@@ -92,54 +98,82 @@ L.OSM.layers = function(options) {
             map.removeLayer(other);
           }
         });
+        map.fire('baselayerchange', {layer: layer});
       });
 
       map.on('layeradd layerremove', function() {
         item.toggleClass('active', map.hasLayer(layer));
+        input.prop('checked', map.hasLayer(layer));
       });
     });
 
-    if (OSM.STATUS != 'api_offline' && OSM.STATUS != 'database_offline') {
-      var overlaySection = $('<section>')
-        .addClass('overlay-layers')
+    if (OSM.STATUS !== 'api_offline' && OSM.STATUS !== 'database_offline') {
+      var overlaySection = $('<div>')
+        .attr('class', 'section overlay-layers')
         .appendTo($ui);
 
       $('<p>')
         .text(I18n.t('javascripts.map.layers.overlays'))
+        .attr("class", "deemphasize")
         .appendTo(overlaySection);
 
-      var list = $('<ul>')
+      var overlays = $('<ul>')
         .appendTo(overlaySection);
 
-      function addOverlay(layer, name) {
+      var addOverlay = function (layer, name, maxArea) {
         var item = $('<li>')
-          .appendTo(list);
+          .tooltip({
+            placement: 'top'
+          })
+          .appendTo(overlays);
 
         var label = $('<label>')
           .appendTo(item);
 
+        var checked = map.hasLayer(layer);
+
         var input = $('<input>')
           .attr('type', 'checkbox')
-          .prop('checked', map.hasLayer(layer))
+          .prop('checked', checked)
           .appendTo(label);
 
-        label.append(name);
+        label.append(I18n.t('javascripts.map.layers.' + name));
 
         input.on('change', function() {
-          if (input.is(':checked')) {
+          checked = input.is(':checked');
+          if (checked) {
             map.addLayer(layer);
           } else {
             map.removeLayer(layer);
           }
+          map.fire('overlaylayerchange', {layer: layer});
         });
 
         map.on('layeradd layerremove', function() {
           input.prop('checked', map.hasLayer(layer));
         });
-      }
 
-      addOverlay(map.noteLayer, I18n.t('javascripts.map.layers.notes'));
-      addOverlay(map.dataLayer, I18n.t('javascripts.map.layers.data'));
+        map.on('zoomend', function() {
+          var disabled = map.getBounds().getSize() >= maxArea;
+          $(input).prop('disabled', disabled);
+
+          if (disabled && $(input).is(':checked')) {
+            $(input).prop('checked', false)
+              .trigger('change');
+            checked = true;
+          } else if (!disabled && !$(input).is(':checked') && checked) {
+            $(input).prop('checked', true)
+              .trigger('change');
+          }
+
+          $(item).attr('class', disabled ? 'disabled' : '');
+          item.attr('data-original-title', disabled ?
+            I18n.t('javascripts.site.map_' + name + '_zoom_in_tooltip') : '');
+        });
+      };
+
+      addOverlay(map.noteLayer, 'notes', OSM.MAX_NOTE_REQUEST_AREA);
+      addOverlay(map.dataLayer, 'data', OSM.MAX_REQUEST_AREA);
     }
 
     options.sidebar.addPane($ui);
@@ -147,7 +181,8 @@ L.OSM.layers = function(options) {
     function toggle(e) {
       e.stopPropagation();
       e.preventDefault();
-      options.sidebar.togglePane($ui);
+      options.sidebar.togglePane($ui, button);
+      $('.leaflet-control .control-button').tooltip('hide');
     }
 
     return $container[0];