1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
/*
* Copyright (C) 2001 Peter Kelly (pmk@post.com)
* Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de)
* Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
* Copyright (C) 2003, 2004, 2005, 2006, 2008 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_CLIPBOARD_DATA_TRANSFER_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_CLIPBOARD_DATA_TRANSFER_H_
#include <memory>
#include "third_party/blink/public/common/page/drag_operation.h"
#include "third_party/blink/renderer/core/clipboard/data_object.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/keywords.h"
#include "third_party/blink/renderer/core/loader/resource/image_resource_content.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/wtf/forward.h"
#include "third_party/blink/renderer/platform/wtf/text/atomic_string.h"
#include "ui/base/dragdrop/mojom/drag_drop_types.mojom-blink-forward.h"
#include "ui/gfx/geometry/point.h"
namespace blink {
class DataTransferItemList;
class DragImage;
class Element;
class FileList;
class FrameSelection;
class LocalFrame;
class Node;
class PaintRecordBuilder;
class PropertyTreeState;
enum class DataTransferAccessPolicy;
// Used for drag and drop and copy/paste.
// Drag and Drop:
// https://html.spec.whatwg.org/multipage/dnd.html
// Clipboard API (copy/paste):
// https://w3c.github.io/clipboard-apis/
class CORE_EXPORT DataTransfer final : public ScriptWrappable,
public DataObject::Observer {
DEFINE_WRAPPERTYPEINFO();
public:
// Whether this transfer is serving a drag-drop, copy-paste, spellcheck,
// auto-correct or similar request.
enum DataTransferType {
kCopyAndPaste,
kDragAndDrop,
kInsertReplacementText,
};
static DataTransfer* Create();
static DataTransfer* Create(DataTransferType,
DataTransferAccessPolicy,
DataObject*);
DataTransfer(DataTransferType, DataTransferAccessPolicy, DataObject*);
~DataTransfer() override;
bool IsForCopyAndPaste() const { return transfer_type_ == kCopyAndPaste; }
bool IsForDragAndDrop() const { return transfer_type_ == kDragAndDrop; }
AtomicString dropEffect() const {
return DropEffectIsInitialized() ? drop_effect_ : keywords::kNone;
}
void setDropEffect(const AtomicString&);
bool DropEffectIsInitialized() const { return !drop_effect_.IsNull(); }
AtomicString effectAllowed() const { return effect_allowed_; }
void setEffectAllowed(const AtomicString&);
void clearData(const String& type = String());
String getData(const String& type) const;
void setData(const String& type, const String& data);
// Used by the bindings code to determine whether to call types() again.
bool hasDataStoreItemListChanged() const;
Vector<String> types();
FileList* files() const;
// Returns drag location (offset) within the dragged object. This is (0,0)
// unless set by setDragImage().
gfx::Point DragLocation() const { return drag_loc_; }
void setDragImage(Element*, int x, int y);
void ClearDragImage();
void SetDragImageResource(ImageResourceContent*, const gfx::Point&);
void SetDragImageElement(Node*, const gfx::Point&);
std::unique_ptr<DragImage> CreateDragImage(gfx::Point& drag_location,
float device_scale_factor,
LocalFrame*) const;
void DeclareAndWriteDragImage(Element*,
const KURL& link_url,
const KURL& image_url,
const String& title);
void WriteURL(Node*, const KURL&, const String&);
void WriteSelection(const FrameSelection&);
void SetAccessPolicy(DataTransferAccessPolicy);
bool CanReadTypes() const;
bool CanReadData() const;
bool CanWriteData() const;
// Note that the spec doesn't actually allow drag image modification outside
// the dragstart event. This capability is maintained for backwards
// compatiblity for ports that have supported this in the past. On many ports,
// attempting to set a drag image outside the dragstart operation is a no-op
// anyway.
bool CanSetDragImage() const;
DragOperationsMask SourceOperation() const;
ui::mojom::blink::DragOperation DestinationOperation() const;
void SetSourceOperation(DragOperationsMask);
void SetDestinationOperation(ui::mojom::blink::DragOperation);
DataTransferItemList* items();
DataObject* GetDataObject() const;
// Clip to the visible area of the visual viewport.
static gfx::RectF ClipByVisualViewport(const gfx::RectF& rect_in_document,
const LocalFrame&);
// |layout_size| is the size of the image in layout pixels.
// |paint_offset| is the offset from the origin of the dragged object of the
// PaintRecordBuilder.
static std::unique_ptr<DragImage> CreateDragImageForFrame(
LocalFrame&,
float,
const gfx::SizeF& layout_size,
const gfx::Vector2dF& paint_offset,
PaintRecordBuilder&,
const PropertyTreeState&);
static std::unique_ptr<DragImage> NodeImage(LocalFrame&, Node&);
void Trace(Visitor*) const override;
private:
void setDragImage(ImageResourceContent*, Node*, const gfx::Point&);
bool HasFileOfType(const String&) const;
bool HasStringOfType(const String&) const;
// DataObject::Observer override.
void OnItemListChanged() override;
// Instead of using this member directly, prefer to use the can*() methods
// above.
DataTransferAccessPolicy policy_;
AtomicString drop_effect_;
AtomicString effect_allowed_;
DataTransferType transfer_type_;
Member<DataObject> data_object_;
bool data_store_item_list_changed_;
gfx::Point drag_loc_;
Member<ImageResourceContent> drag_image_;
Member<Node> drag_image_element_;
Member<FileList> files_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_CLIPBOARD_DATA_TRANSFER_H_
|
