Initial commit

lib/assets/javascripts/builder/editor/layers/layer-view-factory.js

@@ -0,0 +1,138 @@
+var _ = require('underscore');
+var layerTypesAndKinds = require('builder/data/layer-types-and-kinds');
+var BaseTiledLayerView = require('./layer-views/base-tiled-layer-view');
+var PlainColorLayerView = require('./layer-views/plain-color-layer-view');
+var BackgroundImageLayerView = require('./layer-views/background-image-layer-view');
+var GoogleMapsBaseLayerView = require('./layer-views/google-maps-base-layer-view');
+var DataLayerView = require('./layer-views/data-layer-view');
+var ErroredDataLayerView = require('./layer-views/errored-data-layer-view');
+var LabelsLayerView = require('./layer-views/labels-layer-view');
+var LayerAnalysesView = require('./layer-analyses-view');
+var LayerAnalysisViewFactory = require('./layer-analysis-view-factory');
+var checkAndBuildOpts = require('builder/helpers/required-opts');
+
+var REQUIRED_OPTS = [
+  'userActions',
+  'layerDefinitionsCollection',
+  'analysisDefinitionNodesCollection',
+  'modals',
+  'configModel',
+  'sortableSelector',
+  'stateDefinitionModel',
+  'visDefinitionModel',
+  'widgetDefinitionsCollection'
+];
+
+var LayerViewFactory = function (opts) {
+  opts = opts || {};
+  checkAndBuildOpts(opts, REQUIRED_OPTS, this);
+};
+
+LayerViewFactory.prototype.createLayerView = function (layerDefinitionModel) {
+  var layerViewOptions = {
+    model: layerDefinitionModel,
+    modals: this._modals,
+    stateDefinitionModel: this._stateDefinitionModel,
+    configModel: this._configModel
+  };
+
+  if (layerDefinitionModel.isDataLayer()) {
+    layerViewOptions = _.extend(layerViewOptions, {
+      userActions: this._userActions,
+      layerDefinitionsCollection: this._layerDefinitionsCollection,
+      newAnalysesView: this._newAnalysesView.bind(this),
+      widgetDefinitionsCollection: this._widgetDefinitionsCollection,
+      visDefinitionModel: this._visDefinitionModel,
+      analysisDefinitionNodesCollection: this._analysisDefinitionNodesCollection
+    });
+  }
+
+  var LayerViewClass = this._getLayerViewClass(layerDefinitionModel);
+  return new LayerViewClass(layerViewOptions);
+};
+
+LayerViewFactory.prototype._getLayerViewClass = function (layerDefinitionModel) {
+  // Base layers
+  if (this._isTiledBaseLayer(layerDefinitionModel)) {
+    return BaseTiledLayerView;
+  }
+  if (this._isPlainColorBaseLayer(layerDefinitionModel)) {
+    return PlainColorLayerView;
+  }
+  if (this._isBackgroundImageBaseLayer(layerDefinitionModel)) {
+    return BackgroundImageLayerView;
+  }
+  if (this._isGoogleMapsBaseLayer(layerDefinitionModel)) {
+    return GoogleMapsBaseLayerView;
+  }
+
+  // Data layers
+  if (layerDefinitionModel.isDataLayer()) {
+    var nodeDefModel = layerDefinitionModel.getAnalysisDefinitionNodeModel();
+    if (nodeDefModel) {
+      return DataLayerView;
+    } else {
+      // Ghost node layer (😱)
+      return ErroredDataLayerView;
+    }
+  }
+
+  // Labels layer
+  if (this.isLabelsLayer(layerDefinitionModel)) {
+    return LabelsLayerView;
+  }
+
+  throw new Error('No layer view for type "' + layerDefinitionModel.get('type') + '" just yet.');
+};
+
+LayerViewFactory.prototype._isBaseLayer = function (layerDefinitionModel) {
+  return layerDefinitionModel.get('order') === 0;
+};
+
+LayerViewFactory.prototype._isTiledBaseLayer = function (layerDefinitionModel) {
+  var layerType = layerDefinitionModel.get('type');
+  return layerTypesAndKinds.isTiledType(layerType) &&
+    this._isBaseLayer(layerDefinitionModel);
+};
+
+LayerViewFactory.prototype._isPlainColorBaseLayer = function (layerDefinitionModel) {
+  var layerType = layerDefinitionModel.get('type');
+  return layerTypesAndKinds.isPlainType(layerType) &&
+    this._isBaseLayer(layerDefinitionModel) &&
+      layerDefinitionModel.get('color');
+};
+
+LayerViewFactory.prototype._isBackgroundImageBaseLayer = function (layerDefinitionModel) {
+  var layerType = layerDefinitionModel.get('type');
+  return layerTypesAndKinds.isPlainType(layerType) &&
+    this._isBaseLayer(layerDefinitionModel) &&
+      layerDefinitionModel.get('image');
+};
+
+LayerViewFactory.prototype._isGoogleMapsBaseLayer = function (layerDefinitionModel) {
+  var layerType = layerDefinitionModel.get('type');
+  return layerTypesAndKinds.isGMapsBase(layerType) &&
+    this._isBaseLayer(layerDefinitionModel);
+};
+
+LayerViewFactory.prototype.isLabelsLayer = function (layerDefinitionModel) {
+  var layerType = layerDefinitionModel.get('type');
+  return layerTypesAndKinds.isTiledType(layerType) &&
+    !this._isBaseLayer(layerDefinitionModel);
+};
+
+LayerViewFactory.prototype.isBasemapLayer = function (layerDefinitionModel) {
+  return this._isBaseLayer(layerDefinitionModel);
+};
+
+LayerViewFactory.prototype._newAnalysesView = function (el, layerDefinitionModel) {
+  var layerAnalysisViewFactory = new LayerAnalysisViewFactory(this._analysisDefinitionNodesCollection);
+  return new LayerAnalysesView({
+    el: el,
+    model: layerDefinitionModel,
+    layerAnalysisViewFactory: layerAnalysisViewFactory,
+    sortableSelector: this._sortableSelector
+  });
+};
+
+module.exports = LayerViewFactory;