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LibWeb: Implement DataTransferItem.prototype.getAsFile()
This is used on imgur after drag-and-dropping an image onto its page.
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github-actions[bot]
2024-08-23 09:11:45 +00:00
Author: https://github.com/trflynn89 Commit: https://github.com/LadybirdBrowser/ladybird/commit/b978dba8bdb Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/1163 Reviewed-by: https://github.com/tcl3 ✅
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@ -5,3 +5,4 @@ stringItem: kind=string, type=custom-type
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length=1, types=custom-type
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fileItem: kind=file, type=text/plain
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length=2, types=custom-type,Files
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fileItemAsFile: name=file.txt, type=text/plain
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@ -29,6 +29,9 @@
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println(`fileItem: kind=${fileItem.kind}, type=${fileItem.type}`);
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println(`length=${dataTransferItemList.length}, types=${dataTransfer.types}`);
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let fileItemAsFile = fileItem.getAsFile();
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println(`fileItemAsFile: name=${fileItemAsFile.name}, type=${fileItemAsFile.type}`);
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if (dataTransferItemList[1] !== fileItem) {
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println("FAILED");
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}
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@ -7,6 +7,7 @@
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#include <LibJS/Runtime/Realm.h>
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#include <LibWeb/Bindings/DataTransferItemPrototype.h>
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/FileAPI/File.h>
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#include <LibWeb/HTML/DataTransfer.h>
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#include <LibWeb/HTML/DataTransferItem.h>
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@ -85,4 +86,32 @@ Optional<DragDataStore::Mode> DataTransferItem::mode() const
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return m_data_transfer->mode();
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}
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// https://html.spec.whatwg.org/multipage/dnd.html#dom-datatransferitem-getasfile
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JS::GCPtr<FileAPI::File> DataTransferItem::get_as_file() const
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{
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auto& realm = this->realm();
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// 1. If the DataTransferItem object is not in the read/write mode or the read-only mode, then return null
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if (mode() != DragDataStore::Mode::ReadWrite && mode() != DragDataStore::Mode::ReadOnly)
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return nullptr;
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auto const& item = m_data_transfer->drag_data(*m_item_index);
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// 2. If the drag data item kind is not File, then return null.
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if (item.kind != DragDataStoreItem::Kind::File)
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return nullptr;
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// 3. Return a new File object representing the actual data of the item represented by the DataTransferItem object.
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auto blob = FileAPI::Blob::create(realm, item.data, item.type_string);
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// FIXME: The FileAPI should use ByteString for file names.
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auto file_name = MUST(String::from_byte_string(item.file_name));
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// FIXME: Fill in other fields (e.g. last_modified).
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FileAPI::FilePropertyBag options {};
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options.type = item.type_string;
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return MUST(FileAPI::File::create(realm, { JS::make_handle(blob) }, file_name, move(options)));
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}
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}
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@ -25,6 +25,8 @@ public:
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String kind() const;
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String type() const;
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JS::GCPtr<FileAPI::File> get_as_file() const;
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private:
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DataTransferItem(JS::Realm&, JS::NonnullGCPtr<DataTransfer>, size_t item_index);
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@ -8,5 +8,5 @@ interface DataTransferItem {
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readonly attribute DOMString kind;
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readonly attribute DOMString type;
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[FIXME] undefined getAsString(FunctionStringCallback? _callback);
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[FIXME] File? getAsFile();
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File? getAsFile();
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};
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