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Trigger change when source tile state changes

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A VectorImageTile now gets changed() whenever one of its source tiles's state
changes, until all source tiles are LOADED.
This commit is contained in:
Andreas Hocevar
2017-08-15 16:12:41 -04:00
parent ee81a5e817
commit c69cf27218
2 changed files with 70 additions and 21 deletions
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49
test/spec/ol/vectorimagetile.test.js
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@@ -29,7 +29,7 @@ describe('ol.VectorImageTile', function() {
});
});
it('sets ERROR state when source tiles fail to load', function(done) {
it('sets LOADED state when source tiles fail to load', function(done) {
var format = new ol.format.GeoJSON();
var url = 'spec/ol/data/unavailable.json';
var tile = new ol.VectorImageTile([0, 0, 0], 0, url, format,
@@ -41,7 +41,52 @@ describe('ol.VectorImageTile', function() {
tile.load();
ol.events.listen(tile, 'change', function(e) {
expect(tile.getState()).to.be(ol.TileState.ERROR);
expect(tile.getState()).to.be(ol.TileState.EMPTY);
done();
});
});
it('sets LOADED state when previously failed source tiles are loaded', function(done) {
var format = new ol.format.GeoJSON();
var url = 'spec/ol/data/unavailable.json';
var sourceTile;
var tile = new ol.VectorImageTile([0, 0, 0], 0, url, format,
function(tile, url) {
sourceTile = tile;
ol.VectorImageTile.defaultLoadFunction(tile, url);
}, [0, 0, 0], function() {
return url;
}, ol.tilegrid.createXYZ(), ol.tilegrid.createXYZ(), {},
1, ol.proj.get('EPSG:3857'), ol.VectorTile, function() {});
tile.load();
var calls = 0;
ol.events.listen(tile, 'change', function(e) {
++calls;
expect(tile.getState()).to.be(calls == 2 ? ol.TileState.LOADED : ol.TileState.EMPTY);
if (calls == 2) {
done();
} else {
setTimeout(function() {
sourceTile.setState(ol.TileState.LOADED);
}, 0);
}
});
});
it('sets EMPTY state when all source tiles fail to load', function(done) {
var format = new ol.format.GeoJSON();
var url = 'spec/ol/data/unavailable.json';
var tile = new ol.VectorImageTile([0, 0, 0], 0, url, format,
ol.VectorImageTile.defaultLoadFunction, [0, 0, 0], function() {
return url;
}, ol.tilegrid.createXYZ(), ol.tilegrid.createXYZ(), {},
1, ol.proj.get('EPSG:3857'), ol.VectorTile, function() {});
tile.load();
ol.events.listen(tile, 'change', function(e) {
expect(tile.getState()).to.be(ol.TileState.EMPTY);
done();
});
});