aaac7fed
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/*
* 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.
*/
import {__DEV__} from '../../config';
import {each, createHashMap} from 'zrender/src/core/util';
import mapDataStorage from './mapDataStorage';
import geoJSONLoader from './geoJSONLoader';
import geoSVGLoader from './geoSVGLoader';
import BoundingRect from 'zrender/src/core/BoundingRect';
var loaders = {
geoJSON: geoJSONLoader,
svg: geoSVGLoader
};
export default {
/**
* @param {string} mapName
* @param {Object} nameMap
* @return {Object} source {regions, regionsMap, nameCoordMap, boundingRect}
*/
load: function (mapName, nameMap) {
var regions = [];
var regionsMap = createHashMap();
var nameCoordMap = createHashMap();
var boundingRect;
var mapRecords = retrieveMap(mapName);
each(mapRecords, function (record) {
var singleSource = loaders[record.type].load(mapName, record);
each(singleSource.regions, function (region) {
var regionName = region.name;
// Try use the alias in geoNameMap
if (nameMap && nameMap.hasOwnProperty(regionName)) {
region = region.cloneShallow(regionName = nameMap[regionName]);
}
regions.push(region);
regionsMap.set(regionName, region);
nameCoordMap.set(regionName, region.center);
});
var rect = singleSource.boundingRect;
if (rect) {
boundingRect
? boundingRect.union(rect)
: (boundingRect = rect.clone());
}
});
return {
regions: regions,
regionsMap: regionsMap,
nameCoordMap: nameCoordMap,
// FIXME Always return new ?
boundingRect: boundingRect || new BoundingRect(0, 0, 0, 0)
};
},
/**
* @param {string} mapName
* @param {string} hostKey For cache.
* @return {Array.<module:zrender/Element>} Roots.
*/
makeGraphic: makeInvoker('makeGraphic'),
/**
* @param {string} mapName
* @param {string} hostKey For cache.
*/
removeGraphic: makeInvoker('removeGraphic')
};
function makeInvoker(methodName) {
return function (mapName, hostKey) {
var mapRecords = retrieveMap(mapName);
var results = [];
each(mapRecords, function (record) {
var method = loaders[record.type][methodName];
method && results.push(method(mapName, record, hostKey));
});
return results;
};
}
function mapNotExistsError(mapName) {
if (__DEV__) {
console.error(
'Map ' + mapName + ' not exists. You can download map file on http://echarts.baidu.com/download-map.html'
);
}
}
function retrieveMap(mapName) {
var mapRecords = mapDataStorage.retrieveMap(mapName) || [];
if (__DEV__) {
if (!mapRecords.length) {
mapNotExistsError(mapName);
}
}
return mapRecords;
}
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