1 /* 2 * Copyright (C) 2001 Peter Kelly (pmk (at) post.com) 3 * Copyright (C) 2001 Tobias Anton (anton (at) stud.fbi.fh-darmstadt.de) 4 * Copyright (C) 2006 Samuel Weinig (sam.weinig (at) gmail.com) 5 * Copyright (C) 2003, 2004, 2005, 2006, 2008 Apple Inc. All rights reserved. 6 * 7 * This library is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Library General Public 9 * License as published by the Free Software Foundation; either 10 * version 2 of the License, or (at your option) any later version. 11 * 12 * This library is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Library General Public License for more details. 16 * 17 * You should have received a copy of the GNU Library General Public License 18 * along with this library; see the file COPYING.LIB. If not, write to 19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 20 * Boston, MA 02110-1301, USA. 21 * 22 */ 23 24 #ifndef Clipboard_h 25 #define Clipboard_h 26 27 #include "bindings/v8/ScriptWrappable.h" 28 #include "core/dom/ClipboardAccessPolicy.h" 29 #include "core/fetch/ResourcePtr.h" 30 #include "core/page/DragActions.h" 31 #include "platform/geometry/IntPoint.h" 32 #include "wtf/Forward.h" 33 #include "wtf/RefCounted.h" 34 #include "wtf/RefPtr.h" 35 #include "wtf/Vector.h" 36 37 namespace WebCore { 38 39 class ChromiumDataObject; 40 class DataTransferItemList; 41 class DragImage; 42 class Element; 43 class ExceptionState; 44 class FileList; 45 class Frame; 46 class ImageResource; 47 class Node; 48 class Range; 49 50 // State available during IE's events for drag and drop and copy/paste 51 class Clipboard : public RefCounted<Clipboard>, public ScriptWrappable { 52 public: 53 // Whether this clipboard is serving a drag-drop or copy-paste request. 54 enum ClipboardType { 55 CopyAndPaste, 56 DragAndDrop, 57 }; 58 59 static PassRefPtr<Clipboard> create(ClipboardType, ClipboardAccessPolicy, PassRefPtr<ChromiumDataObject>); 60 ~Clipboard(); 61 62 bool isForCopyAndPaste() const { return m_clipboardType == CopyAndPaste; } 63 bool isForDragAndDrop() const { return m_clipboardType == DragAndDrop; } 64 65 String dropEffect() const { return dropEffectIsUninitialized() ? "none" : m_dropEffect; } 66 void setDropEffect(const String&); 67 bool dropEffectIsUninitialized() const { return m_dropEffect == "uninitialized"; } 68 String effectAllowed() const { return m_effectAllowed; } 69 void setEffectAllowed(const String&); 70 71 void clearData(const String& type = String()); 72 String getData(const String& type) const; 73 bool setData(const String& type, const String& data); 74 75 // extensions beyond IE's API 76 Vector<String> types() const; 77 PassRefPtr<FileList> files() const; 78 79 IntPoint dragLocation() const { return m_dragLoc; } 80 void setDragImage(Element*, int x, int y, ExceptionState&); 81 ImageResource* dragImageResource() const { return m_dragImage.get(); } 82 void setDragImageResource(ImageResource*, const IntPoint&); 83 Node* dragImageElement() const { return m_dragImageElement.get(); } 84 void setDragImageElement(Node*, const IntPoint&); 85 86 PassOwnPtr<DragImage> createDragImage(IntPoint& dragLocation, Frame*) const; 87 void declareAndWriteDragImage(Element*, const KURL&, const String& title); 88 void writeURL(const KURL&, const String&); 89 void writeRange(Range*, Frame*); 90 void writePlainText(const String&); 91 92 bool hasData(); 93 94 void setAccessPolicy(ClipboardAccessPolicy); 95 bool canReadTypes() const; 96 bool canReadData() const; 97 bool canWriteData() const; 98 // Note that the spec doesn't actually allow drag image modification outside the dragstart 99 // event. This capability is maintained for backwards compatiblity for ports that have 100 // supported this in the past. On many ports, attempting to set a drag image outside the 101 // dragstart operation is a no-op anyway. 102 bool canSetDragImage() const; 103 104 DragOperation sourceOperation() const; 105 DragOperation destinationOperation() const; 106 void setSourceOperation(DragOperation); 107 void setDestinationOperation(DragOperation); 108 109 bool hasDropZoneType(const String&); 110 111 PassRefPtr<DataTransferItemList> items(); 112 113 PassRefPtr<ChromiumDataObject> dataObject() const; 114 115 private: 116 Clipboard(ClipboardType, ClipboardAccessPolicy, PassRefPtr<ChromiumDataObject>); 117 118 void setDragImage(ImageResource*, Node*, const IntPoint&); 119 120 bool hasFileOfType(const String&) const; 121 bool hasStringOfType(const String&) const; 122 123 // Instead of using this member directly, prefer to use the can*() methods above. 124 ClipboardAccessPolicy m_policy; 125 String m_dropEffect; 126 String m_effectAllowed; 127 ClipboardType m_clipboardType; 128 RefPtr<ChromiumDataObject> m_dataObject; 129 130 IntPoint m_dragLoc; 131 ResourcePtr<ImageResource> m_dragImage; 132 RefPtr<Node> m_dragImageElement; 133 }; 134 135 DragOperation convertDropZoneOperationToDragOperation(const String& dragOperation); 136 String convertDragOperationToDropZoneOperation(DragOperation); 137 138 } // namespace WebCore 139 140 #endif // Clipboard_h 141
