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Allow VectorSource to load and parse data

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This adds url, data and parser options to the source, and makes
EPSG:4326 the default projection. It also adds a prepareFeatures
method, which is used to load/parse data once the target
projection is known.
This commit is contained in:
ahocevar
2013-07-17 11:24:34 +02:00
parent 63c4feb6db
commit f325046a95
4 changed files with 168 additions and 3 deletions
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70
test/spec/ol/source/vectorsource.test.js
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@@ -11,7 +11,77 @@ describe('ol.source.Vector', function() {
});
});
describe('#prepareFeatures', function() {
it('loads and parses data from a file', function(done) {
var source = new ol.source.Vector({
url: 'spec/ol/parser/geojson/countries.geojson',
parser: new ol.parser.GeoJSON()
});
var layer = new ol.layer.Vector({
source: source
});
source.prepareFeatures(layer, [-180, 180, -90, 90],
ol.proj.get('EPSG:4326'),
function() {
expect(source.loadState_).to.be(ol.source.VectorLoadState.LOADED);
expect(goog.object.getCount(
layer.featureCache_.getFeaturesObject())).to.be(179);
done();
});
});
it('parses inline data', function() {
var source = new ol.source.Vector({
data: {
'type': 'FeatureCollection',
'features': [{
'type': 'Feature',
'geometry': {
'type': 'Point',
'coordinates': [0, -6000000]
}
}, {
'type': 'Feature',
'geometry': {
'type': 'Point',
'coordinates': [-6000000, 0]
}
}, {
'type': 'Feature',
'geometry': {
'type': 'Point',
'coordinates': [0, 6000000]
}
}, {
'type': 'Feature',
'geometry': {
'type': 'Point',
'coordinates': [6000000, 0]
}
}]
},
parser: new ol.parser.GeoJSON(),
projection: ol.proj.get('EPSG:4326')
});
var layer = new ol.layer.Vector({
source: source
});
source.prepareFeatures(layer, [-180, 180, -90, 90],
ol.proj.get('EPSG:4326'),
function() {
expect(source.loadState_).to.be(ol.source.VectorLoadState.LOADED);
expect(goog.object.getCount(
layer.featureCache_.getFeaturesObject())).to.be(4);
done();
});
});
});
});
goog.require('goog.object');
goog.require('ol.layer.Vector');
goog.require('ol.parser.GeoJSON');
goog.require('ol.proj');
goog.require('ol.source.Source');
goog.require('ol.source.Vector');