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Implement tileerror events, on both HTTP errors and FileReader errors. #140

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Implement tileerror events, on both HTTP errors and FileReader errors. #140

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10 changes: 8 additions & 2 deletions src/Leaflet.VectorGrid.Protobuf.js
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Original file line number Diff line number Diff line change
Expand Up @@ -107,14 +107,15 @@ L.VectorGrid.Protobuf = L.VectorGrid.extend({
return fetch(tileUrl, this.options.fetchOptions).then(function(response){

if (!response.ok) {
return {layers:[]};
throw new Error('Failed to fetch tile: HTTP response ' + response.status +
' ' + response.statusText);
}

return response.blob().then( function (blob) {
// console.log(blob);

var reader = new FileReader();
return new Promise(function(resolve){
return new Promise(function(resolve, reject){
reader.addEventListener("loadend", function() {
// reader.result contains the contents of blob as a typed array

Expand All @@ -124,6 +125,9 @@ L.VectorGrid.Protobuf = L.VectorGrid.extend({
return resolve(new VectorTile( pbf ));

});
reader.addEventListener("error", reject);
reader.addEventListener("abort", reject);

reader.readAsArrayBuffer(blob);
});
});
Expand All @@ -146,6 +150,8 @@ L.VectorGrid.Protobuf = L.VectorGrid.extend({
}

return json;
}).catch(function(err){
this.fire('tileerror', err);
});
}
});
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