summaryrefslogtreecommitdiffstats
path: root/dom/events/DataTransferItem.h
diff options
context:
space:
mode:
Diffstat (limited to 'dom/events/DataTransferItem.h')
-rw-r--r--dom/events/DataTransferItem.h153
1 files changed, 153 insertions, 0 deletions
diff --git a/dom/events/DataTransferItem.h b/dom/events/DataTransferItem.h
new file mode 100644
index 000000000..ccd4bafa1
--- /dev/null
+++ b/dom/events/DataTransferItem.h
@@ -0,0 +1,153 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_dom_DataTransferItem_h
+#define mozilla_dom_DataTransferItem_h
+
+#include "mozilla/ErrorResult.h"
+#include "mozilla/dom/DataTransfer.h"
+#include "mozilla/dom/DOMString.h"
+#include "mozilla/dom/File.h"
+
+namespace mozilla {
+namespace dom {
+
+class FileSystemEntry;
+class FunctionStringCallback;
+
+class DataTransferItem final : public nsISupports
+ , public nsWrapperCache
+{
+public:
+ NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+ NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(DataTransferItem);
+
+public:
+ // The spec only talks about the "file" and "string" kinds. Due to the Moz*
+ // APIs, it is possible to attach any type to a DataTransferItem, meaning that
+ // we can have other kinds then just FILE and STRING. These others are simply
+ // marked as "other" and can only be produced throug the Moz* APIs.
+ enum eKind {
+ KIND_FILE,
+ KIND_STRING,
+ KIND_OTHER,
+ };
+
+ DataTransferItem(DataTransfer* aDataTransfer, const nsAString& aType,
+ eKind aKind = KIND_OTHER)
+ : mIndex(0)
+ , mChromeOnly(false)
+ , mKind(aKind)
+ , mType(aType)
+ , mDataTransfer(aDataTransfer)
+ {
+ MOZ_ASSERT(mDataTransfer, "Must be associated with a DataTransfer");
+ }
+
+ already_AddRefed<DataTransferItem> Clone(DataTransfer* aDataTransfer) const;
+
+ virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
+
+ void GetAsString(FunctionStringCallback* aCallback,
+ nsIPrincipal& aSubjectPrincipal,
+ ErrorResult& aRv);
+
+ void GetKind(nsAString& aKind) const
+ {
+ switch (mKind) {
+ case KIND_FILE:
+ aKind = NS_LITERAL_STRING("file");
+ return;
+ case KIND_STRING:
+ aKind = NS_LITERAL_STRING("string");
+ return;
+ default:
+ aKind = NS_LITERAL_STRING("other");
+ return;
+ }
+ }
+
+ void GetInternalType(nsAString& aType) const
+ {
+ aType = mType;
+ }
+
+ void GetType(nsAString& aType);
+
+ eKind Kind() const
+ {
+ return mKind;
+ }
+
+ already_AddRefed<File>
+ GetAsFile(nsIPrincipal& aSubjectPrincipal, ErrorResult& aRv);
+
+ already_AddRefed<FileSystemEntry>
+ GetAsEntry(nsIPrincipal& aSubjectPrincipal, ErrorResult& aRv);
+
+ DataTransfer* GetParentObject() const
+ {
+ return mDataTransfer;
+ }
+
+ nsIPrincipal* Principal() const
+ {
+ return mPrincipal;
+ }
+ void SetPrincipal(nsIPrincipal* aPrincipal)
+ {
+ mPrincipal = aPrincipal;
+ }
+
+ already_AddRefed<nsIVariant> DataNoSecurityCheck();
+ already_AddRefed<nsIVariant> Data(nsIPrincipal* aPrincipal, ErrorResult& aRv);
+
+ // Note: This can modify the mKind. Callers of this method must let the
+ // relevant DataTransfer know, because its types list can change as a result.
+ void SetData(nsIVariant* aData);
+
+ uint32_t Index() const
+ {
+ return mIndex;
+ }
+ void SetIndex(uint32_t aIndex)
+ {
+ mIndex = aIndex;
+ }
+ void FillInExternalData();
+
+ bool ChromeOnly() const
+ {
+ return mChromeOnly;
+ }
+ void SetChromeOnly(bool aChromeOnly)
+ {
+ mChromeOnly = aChromeOnly;
+ }
+
+ static eKind KindFromData(nsIVariant* aData);
+
+private:
+ ~DataTransferItem() {}
+ already_AddRefed<File> CreateFileFromInputStream(nsIInputStream* aStream);
+
+ // The index in the 2d mIndexedItems array
+ uint32_t mIndex;
+
+ bool mChromeOnly;
+ eKind mKind;
+ const nsString mType;
+ nsCOMPtr<nsIVariant> mData;
+ nsCOMPtr<nsIPrincipal> mPrincipal;
+ RefPtr<DataTransfer> mDataTransfer;
+
+ // File cache for nsIFile application/x-moz-file entries.
+ RefPtr<File> mCachedFile;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif /* mozilla_dom_DataTransferItem_h */