| /* |
| * Copyright 2015 Open Networking Laboratory |
| * |
| * Licensed 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. |
| */ |
| |
| /* |
| ONOS GUI -- SVG -- Map Service |
| |
| @author Simon Hunt |
| */ |
| |
| /* |
| The Map Service caches GeoJSON maps, which can be loaded into the map |
| layer of the Topology View. |
| |
| A GeoMap object can be fetched by ID. IDs that start with an asterisk |
| identify maps bundled with the GUI. IDs that do not start with an |
| asterisk are assumed to be URLs to externally provided data (exact |
| format to be decided). |
| |
| e.g. var geomap = MapService.fetchGeoMap('*continental-us'); |
| |
| The GeoMap object encapsulates topology data (features), and the |
| D3 projection object. |
| |
| Note that, since the GeoMap instance is cached / shared, it should |
| contain no state. |
| */ |
| |
| (function () { |
| 'use strict'; |
| |
| // injected references |
| var $log, fs; |
| |
| // internal state |
| var maps = d3.map(), |
| msgMs = 'MapService.', |
| bundledUrlPrefix = 'data/map/'; |
| |
| function getUrl(id) { |
| if (id[0] === '*') { |
| return bundledUrlPrefix + id.slice(1) + '.json'; |
| } |
| return id + '.json'; |
| } |
| |
| angular.module('onosSvg') |
| .factory('MapService', ['$log', 'FnService', |
| |
| function (_$log_, _fs_) { |
| $log = _$log_; |
| fs = _fs_; |
| |
| function clearCache() { |
| maps = d3.map(); |
| } |
| |
| function fetchGeoMap(id) { |
| if (!fs.isS(id)) { |
| return null; |
| } |
| |
| var geomap = maps.get(id); |
| |
| if (!geomap) { |
| // need to fetch the data and build the object... |
| geomap = { |
| id: id, |
| url: getUrl(id), |
| wasCached: false |
| }; |
| // TODO: use $http service to load map data asynchronously |
| |
| maps.set(id, geomap); |
| } else { |
| geomap.wasCached = true; |
| } |
| |
| return geomap; |
| } |
| |
| return { |
| clearCache: clearCache, |
| fetchGeoMap: fetchGeoMap |
| }; |
| }]); |
| |
| }()); |