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To correctly implement this, it must be known on instantiation whether E is copy-constructible, which is not the case if only a forward declaration is available. This can be resolved either by making sure a full definition of E is available, which is preferable. But in cases where this is not (easily) possible, the information can be explicitly provided by the MOZ_DECLARE_COPY_CONSTRUCTIBLE and MOZ_DECLARE_NON_COPY_CONSTRUCTIBLE macros. In particular, declarations for IPDL-declared types are added to nsTArray.h itself, like it was already done for MOZ_DECLARE_RELOCATE_USING_MOVE_CONSTRUCTOR. Differential Revision: https://phabricator.services.mozilla.com/D66244 --HG-- extra : moz-landing-system : lando
65 lines
1.9 KiB
C++
65 lines
1.9 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_RemoteDragStartData_h
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#define mozilla_dom_RemoteDragStartData_h
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#include "nsCOMPtr.h"
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#include "nsRect.h"
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#include "mozilla/dom/DataTransfer.h"
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#include "mozilla/dom/DOMTypes.h"
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#include "mozilla/gfx/DataSurfaceHelpers.h"
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namespace mozilla {
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namespace dom {
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class IPCDataTransferItem;
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class BrowserParent;
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/**
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* This class is used to hold information about a drag
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* when a drag begins in a content process.
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*/
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class RemoteDragStartData {
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public:
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NS_INLINE_DECL_REFCOUNTING(RemoteDragStartData)
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RemoteDragStartData(BrowserParent* aBrowserParent,
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nsTArray<IPCDataTransfer>&& aDataTransfer,
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const LayoutDeviceIntRect& aRect,
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nsIPrincipal* aPrincipal, nsIContentSecurityPolicy* aCsp);
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void SetVisualization(
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already_AddRefed<gfx::DataSourceSurface> aVisualization) {
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mVisualization = aVisualization;
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}
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// Get the drag image and rectangle, clearing it from this
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// RemoteDragStartData in the process.
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already_AddRefed<mozilla::gfx::SourceSurface> TakeVisualization(
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LayoutDeviceIntRect* aRect) {
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*aRect = mRect;
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return mVisualization.forget();
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}
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void AddInitialDnDDataTo(DataTransfer* aDataTransfer,
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nsIPrincipal** aPrincipal,
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nsIContentSecurityPolicy** aCsp);
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private:
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virtual ~RemoteDragStartData();
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RefPtr<BrowserParent> mBrowserParent;
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nsTArray<IPCDataTransfer> mDataTransfer;
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const LayoutDeviceIntRect mRect;
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nsCOMPtr<nsIPrincipal> mPrincipal;
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nsCOMPtr<nsIContentSecurityPolicy> mCsp;
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RefPtr<mozilla::gfx::SourceSurface> mVisualization;
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_RemoteDragStartData_h
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