Initial commit

2020-06-15 10:58:47 +08:00
commit 4f1dfe7564
8590 changed files with 1516878 additions and 0 deletions
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+var _ = require('underscore');
+var legendsMetadata = require('./legends-metadata');
+
+var CUSTOM_ATTRIBUTES = ['title'];
+var instance;
+var legends;
+
+var State = (function () {
+  var getType = function (type) {
+    var legend = legendsMetadata[type];
+    return legend && legend.legendType;
+  };
+
+  var onLayerAdded = function (layer) {
+    instance[layer.id] = {};
+  };
+
+  var onLayerRemoved = function (layer) {
+    delete instance[layer.id];
+  };
+
+  return {
+    init: function (layersDefinitionCollection, legendsDefinitionCollection) {
+      if (!instance) {
+        instance = {};
+        layersDefinitionCollection.on('add', onLayerAdded);
+        layersDefinitionCollection.on('remove', onLayerRemoved);
+        legends = legendsDefinitionCollection;
+        this.reset();
+      }
+    },
+
+    reset: function () {
+      legends.each(function (legend) {
+        var layer = legend.layerDefinitionModel;
+        if (!instance[layer.id]) {
+          instance[layer.id] = {};
+        }
+
+        var legendType = getType(legend.get('type'));
+        if (!instance[layer.id][legendType]) {
+          instance[layer.id][legendType] = {};
+        }
+
+        var state = _.pick(legend.attributes, legend.attributes.conf.columns);
+        instance[layer.id][legendType] = state;
+      });
+    },
+
+    set: function (layer, type, attrs) {
+      var attributes = _.pick(attrs, CUSTOM_ATTRIBUTES);
+      var legendType = getType(type);
+      if (instance && legendType) {
+        if (!instance[layer.id]) {
+          instance[layer.id] = {};
+        }
+        instance[layer.id][legendType] = attributes;
+      }
+    },
+
+    get: function (layer, type) {
+      var legendType = getType(type);
+      return instance && legendType && instance[layer.id] && instance[layer.id][legendType];
+    },
+
+    getInstance: function () {
+      return instance;
+    }
+  };
+})();
+
+module.exports = State;