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
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/dom/DataTransfer.h"
#include "mozilla/dom/DOMString.h"
#include "mozilla/dom/File.h"
namespace mozilla {
class ErrorResult;
namespace dom {
class DataTransfer;
class FileSystemEntry;
class FunctionStringCallback;
class DataTransferItem final : public nsISupports, public nsWrapperCache {
public:
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_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 = u"file"_ns;
return;
case KIND_STRING:
aKind = u"string"_ns;
return;
default:
aKind = u"other"_ns;
return;
}
}
void GetInternalType(nsAString& aType) const { aType = mType; }
bool IsInternalType(const nsAString& aType) const { return 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; }
// @return cached data, if available.
// otherwise: if available, `mDataTransfer`'s transferable data.
// otherwise the data is retrieved from the clipboard (for
// paste events) or the drag session.
already_AddRefed<nsIVariant> DataNoSecurityCheck();
// Data may return null if the clipboard state has changed since the type was
// detected.
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() = default;
already_AddRefed<File> CreateFileFromInputStream(nsIInputStream* aStream);
already_AddRefed<File> CreateFileFromInputStream(
nsIInputStream* aStream, const char* aFileNameKey,
const nsAString& aContentType);
// 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 */
|
