summaryrefslogtreecommitdiff
path: root/widget/nsClipboardProxy.cpp
blob: f7d863475b13ce9885e51255084cf0c83493b9f1 (plain)
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
/* 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/. */

#include "mozilla/dom/ContentChild.h"
#include "mozilla/Unused.h"
#include "nsArrayUtils.h"
#include "nsClipboardProxy.h"
#include "nsISupportsPrimitives.h"
#include "nsCOMPtr.h"
#include "nsComponentManagerUtils.h"
#include "nsXULAppAPI.h"
#include "nsContentUtils.h"
#include "nsStringStream.h"

using namespace mozilla;
using namespace mozilla::dom;

NS_IMPL_ISUPPORTS(nsClipboardProxy, nsIClipboard, nsIClipboardProxy)

nsClipboardProxy::nsClipboardProxy()
  : mClipboardCaps(false, false)
{
}

NS_IMETHODIMP
nsClipboardProxy::SetData(nsITransferable *aTransferable,
                          nsIClipboardOwner *anOwner, int32_t aWhichClipboard)
{
  ContentChild* child = ContentChild::GetSingleton();

  IPCDataTransfer ipcDataTransfer;
  nsContentUtils::TransferableToIPCTransferable(aTransferable, &ipcDataTransfer,
                                                false, child, nullptr);

  bool isPrivateData = false;
  aTransferable->GetIsPrivateData(&isPrivateData);
  nsCOMPtr<nsIPrincipal> requestingPrincipal;
  aTransferable->GetRequestingPrincipal(getter_AddRefs(requestingPrincipal));
  child->SendSetClipboard(ipcDataTransfer, isPrivateData,
                          IPC::Principal(requestingPrincipal), aWhichClipboard);

  return NS_OK;
}

NS_IMETHODIMP
nsClipboardProxy::GetData(nsITransferable *aTransferable, int32_t aWhichClipboard)
{
   nsTArray<nsCString> types;
  
  nsCOMPtr<nsIArray> flavorList;
  aTransferable->FlavorsTransferableCanImport(getter_AddRefs(flavorList));
  if (flavorList) {
    uint32_t flavorCount = 0;
    flavorList->GetLength(&flavorCount);
    for (uint32_t j = 0; j < flavorCount; ++j) {
      nsCOMPtr<nsISupportsCString> flavor = do_QueryElementAt(flavorList, j);
      if (flavor) {
        nsAutoCString flavorStr;
        flavor->GetData(flavorStr);
        if (flavorStr.Length()) {
          types.AppendElement(flavorStr);
        }
      }
    }
  }

  nsresult rv;
  IPCDataTransfer dataTransfer;
  ContentChild::GetSingleton()->SendGetClipboard(types, aWhichClipboard, &dataTransfer);

  auto& items = dataTransfer.items();
  for (uint32_t j = 0; j < items.Length(); ++j) {
    const IPCDataTransferItem& item = items[j];

    if (item.data().type() == IPCDataTransferData::TnsString) {
      nsCOMPtr<nsISupportsString> dataWrapper =
        do_CreateInstance(NS_SUPPORTS_STRING_CONTRACTID, &rv);
      NS_ENSURE_SUCCESS(rv, rv);

      nsString data = item.data().get_nsString();
      rv = dataWrapper->SetData(data);
      NS_ENSURE_SUCCESS(rv, rv);

      rv = aTransferable->SetTransferData(item.flavor().get(), dataWrapper,
                                          data.Length() * sizeof(char16_t));
      NS_ENSURE_SUCCESS(rv, rv);
    } else if (item.data().type() == IPCDataTransferData::TShmem) {
      // If this is an image, convert it into an nsIInputStream.
      nsCString flavor = item.flavor();
      mozilla::ipc::Shmem data = item.data().get_Shmem();
      if (flavor.EqualsLiteral(kJPEGImageMime) ||
          flavor.EqualsLiteral(kJPGImageMime) ||
          flavor.EqualsLiteral(kPNGImageMime) ||
          flavor.EqualsLiteral(kGIFImageMime)) {
        nsCOMPtr<nsIInputStream> stream;

        NS_NewCStringInputStream(getter_AddRefs(stream),
                                 nsDependentCString(data.get<char>(), data.Size<char>()));

        rv = aTransferable->SetTransferData(flavor.get(), stream, sizeof(nsISupports*));
        NS_ENSURE_SUCCESS(rv, rv);
      } else if (flavor.EqualsLiteral(kNativeHTMLMime) ||
                 flavor.EqualsLiteral(kRTFMime) ||
                 flavor.EqualsLiteral(kCustomTypesMime)) {
        nsCOMPtr<nsISupportsCString> dataWrapper =
          do_CreateInstance(NS_SUPPORTS_CSTRING_CONTRACTID, &rv);
        NS_ENSURE_SUCCESS(rv, rv);

        rv = dataWrapper->SetData(nsDependentCString(data.get<char>(), data.Size<char>()));
        NS_ENSURE_SUCCESS(rv, rv);

        rv = aTransferable->SetTransferData(item.flavor().get(), dataWrapper,
                                            data.Size<char>());
        NS_ENSURE_SUCCESS(rv, rv);
      }

      mozilla::Unused << ContentChild::GetSingleton()->DeallocShmem(data);
    }
  }

  return NS_OK;
}

NS_IMETHODIMP
nsClipboardProxy::EmptyClipboard(int32_t aWhichClipboard)
{
  ContentChild::GetSingleton()->SendEmptyClipboard(aWhichClipboard);
  return NS_OK;
}

NS_IMETHODIMP
nsClipboardProxy::HasDataMatchingFlavors(const char **aFlavorList,
                                         uint32_t aLength, int32_t aWhichClipboard,
                                         bool *aHasType)
{
  *aHasType = false;

  nsTArray<nsCString> types;
  nsCString* t = types.AppendElements(aLength);
  for (uint32_t j = 0; j < aLength; ++j) {
    t[j].Rebind(aFlavorList[j], nsCharTraits<char>::length(aFlavorList[j]));
  }

  ContentChild::GetSingleton()->SendClipboardHasType(types, aWhichClipboard, aHasType);

  return NS_OK;
}

NS_IMETHODIMP
nsClipboardProxy::SupportsSelectionClipboard(bool *aIsSupported)
{
  *aIsSupported = mClipboardCaps.supportsSelectionClipboard();
  return NS_OK;
}


NS_IMETHODIMP
nsClipboardProxy::SupportsFindClipboard(bool *aIsSupported)
{
  *aIsSupported = mClipboardCaps.supportsFindClipboard();
  return NS_OK;
}

void
nsClipboardProxy::SetCapabilities(const ClipboardCapabilities& aClipboardCaps)
{
  mClipboardCaps = aClipboardCaps;
}