525ce459fc
Previously, clearing a DataTransfer's data removed entries from the drag data store without updating the associated `DataTransferItem` objects. An item obtained beforehand kept an index that no longer referenced a valid entry, so reading its kind or type accessed an out of bounds element of the now-empty list and crashed. We now keep the item objects in sync when clearing data, placing any stale ones into the disabled mode.
19 lines
772 B
HTML
19 lines
772 B
HTML
<!DOCTYPE html>
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<script src="../include.js"></script>
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<script>
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test(() => {
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const dataTransfer = new DataTransfer();
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const item = dataTransfer.items.add("payload", "text/plain");
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dataTransfer.clearData();
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println(`items.length after clearData = ${dataTransfer.items.length}`);
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// The item is now in the disabled mode, because it is not associated with a drag data store.
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// DataTransferItem's kind and type should be empty string because we are in disabled mode, but other engines
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// don't seem to follow the spec here.
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println(`stale item kind = "${item.kind}"`);
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println(`stale item type = "${item.type}"`);
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println(`stale item getAsFile() = ${item.getAsFile()}`);
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});
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</script>
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