155 lines
5.4 KiB
C++
155 lines
5.4 KiB
C++
/*
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* Copyright (C) 2001 Peter Kelly (pmk@post.com)
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* Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de)
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* Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
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* Copyright (C) 2003-2020 Apple Inc. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#pragma once
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#include "CachedResourceHandle.h"
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#include "DragActions.h"
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#include "DragImage.h"
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#include <wtf/text/WTFString.h>
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namespace WebCore {
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class CachedImage;
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class DataTransferItemList;
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class Document;
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class DragData;
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class DragImageLoader;
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class Element;
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class FileList;
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class File;
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class Pasteboard;
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class ScriptExecutionContext;
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enum class WebContentReadingPolicy : bool;
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class DataTransfer : public RefCounted<DataTransfer> {
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public:
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// https://html.spec.whatwg.org/multipage/dnd.html#drag-data-store-mode
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enum class StoreMode { Invalid, ReadWrite, Readonly, Protected };
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static Ref<DataTransfer> create();
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static Ref<DataTransfer> createForCopyAndPaste(const Document&, StoreMode, std::unique_ptr<Pasteboard>&&);
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static Ref<DataTransfer> createForInputEvent(const String& plainText, const String& htmlText);
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WEBCORE_EXPORT ~DataTransfer();
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String dropEffect() const;
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void setDropEffect(const String&);
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String effectAllowed() const;
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void setEffectAllowed(const String&);
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DataTransferItemList& items(Document&);
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Vector<String> types() const;
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Vector<String> typesForItemList() const;
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FileList& files(Document*) const;
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FileList& files(Document&) const;
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void clearData(const String& type = String());
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String getData(Document&, const String& type) const;
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String getDataForItem(Document&, const String& type) const;
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void setData(const String& type, const String& data);
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void setDataFromItemList(const String& type, const String& data);
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void setDragImage(Element&, int x, int y);
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void makeInvalidForSecurity() { m_storeMode = StoreMode::Invalid; }
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bool canReadTypes() const;
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bool canReadData() const;
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bool canWriteData() const;
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bool hasFileOfType(const String&);
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bool hasStringOfType(const String&);
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Pasteboard& pasteboard() { return *m_pasteboard; }
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void commitToPasteboard(Pasteboard&);
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#if ENABLE(DRAG_SUPPORT)
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static Ref<DataTransfer> createForDrag(const Document&);
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static Ref<DataTransfer> createForDragStartEvent(const Document&);
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static Ref<DataTransfer> createForDrop(const Document&, std::unique_ptr<Pasteboard>&&, OptionSet<DragOperation>, bool draggingFiles);
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static Ref<DataTransfer> createForUpdatingDropTarget(const Document&, std::unique_ptr<Pasteboard>&&, OptionSet<DragOperation>, bool draggingFiles);
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bool dropEffectIsUninitialized() const { return m_dropEffect == "uninitialized"; }
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OptionSet<DragOperation> sourceOperationMask() const;
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OptionSet<DragOperation> destinationOperationMask() const;
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void setSourceOperationMask(OptionSet<DragOperation>);
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void setDestinationOperationMask(OptionSet<DragOperation>);
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void setDragHasStarted() { m_shouldUpdateDragImage = true; }
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DragImageRef createDragImage(IntPoint& dragLocation) const;
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void updateDragImage();
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RefPtr<Element> dragImageElement() const;
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void moveDragState(Ref<DataTransfer>&&);
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bool hasDragImage() const;
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#endif
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void didAddFileToItemList();
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void updateFileList(ScriptExecutionContext*);
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private:
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enum class Type { CopyAndPaste, DragAndDropData, DragAndDropFiles, InputEvent };
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DataTransfer(StoreMode, std::unique_ptr<Pasteboard>, Type = Type::CopyAndPaste, String&& effectAllowed = "uninitialized"_s);
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#if ENABLE(DRAG_SUPPORT)
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bool forDrag() const { return m_type == Type::DragAndDropData || m_type == Type::DragAndDropFiles; }
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bool forFileDrag() const { return m_type == Type::DragAndDropFiles; }
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#else
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bool forDrag() const { return false; }
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bool forFileDrag() const { return false; }
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#endif
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String readStringFromPasteboard(Document&, const String& lowercaseType, WebContentReadingPolicy) const;
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bool shouldSuppressGetAndSetDataToAvoidExposingFilePaths() const;
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enum class AddFilesType { No, Yes };
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Vector<String> types(AddFilesType) const;
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Vector<Ref<File>> filesFromPasteboardAndItemList(ScriptExecutionContext*) const;
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String m_originIdentifier;
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StoreMode m_storeMode;
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std::unique_ptr<Pasteboard> m_pasteboard;
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std::unique_ptr<DataTransferItemList> m_itemList;
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mutable RefPtr<FileList> m_fileList;
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#if ENABLE(DRAG_SUPPORT)
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Type m_type;
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String m_dropEffect;
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String m_effectAllowed;
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bool m_shouldUpdateDragImage;
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IntPoint m_dragLocation;
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CachedResourceHandle<CachedImage> m_dragImage;
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RefPtr<Element> m_dragImageElement;
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std::unique_ptr<DragImageLoader> m_dragImageLoader;
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#endif
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};
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} // namespace WebCore
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