rcmet/src/main/ui/app/js/controllers/WorldMapCtrl.js

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *    http: *www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
**/

// Controller for the world map
App.Controllers.controller('WorldMapCtrl', ['$rootScope', '$scope', 'selectedDatasetInformation', 'regionSelectParams',
function($rootScope, $scope, selectedDatasetInformation, regionSelectParams) {
	$scope.datasets = selectedDatasetInformation.getDatasets();
	$scope.regionParams = regionSelectParams.getParameters();

	$scope.updateMap = function() {
 		// Clear Group of layers from map if it exists
 		if ("rectangleGroup" in $rootScope) {
 			$rootScope.rectangleGroup.clearLayers();
 		}

		// Don't process if we don't have any datasets added!!
		if ($scope.datasets.length == 0)
			return;
 		
 		if ("map" in $rootScope) {
 			// Create Group to add all rectangles to map
 			$rootScope.rectangleGroup = L.layerGroup();
 			
 			// Loop through datasets and add rectangles to Group 
			var i = -1;
 			angular.forEach($scope.datasets, function(dataset) {
				// Keep track of dataset count for displaying colors
				i++;

				// If the user disabled the overlay then get out of here!
				if (!dataset.shouldDisplay)
					return;

 				// Get bounds from dataset 
 				var maplatlon = dataset.latlonVals;
 				var bounds = [[maplatlon.latMax, maplatlon.lonMin], [maplatlon.latMin, maplatlon.lonMax]];

 				var polygon = L.rectangle(bounds,{
					stroke: false,
					fillColor: $rootScope.fillColors[i],
 				    fillOpacity: 0.3
 				});

 				// Add layer to Group
 				$rootScope.rectangleGroup.addLayer(polygon);
 			});

			// Draw user selected region
			if ($scope.regionParams.areValid) {

				var bounds = [[$scope.regionParams.latMax, $scope.regionParams.lonMin],
							  [$scope.regionParams.latMin, $scope.regionParams.lonMax]];

				var polygon = L.rectangle(bounds, {
					color: '#000000',
					opacity: 1.0,
					fill: false,
				});

				$rootScope.rectangleGroup.addLayer(polygon);
			}

 			// Add rectangle Group to map
 			$rootScope.rectangleGroup.addTo($rootScope.map);
 		}
	};

	$scope.$on('redrawOverlays', function(event, parameters) {
		$scope.updateMap();
	});

	$scope.$watch('datasets', function() {
		$scope.updateMap();
	}, true);
}]);