1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
3 * This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
7 #include "nsClipboardHelper.h"
12 #include "nsISupportsPrimitives.h"
13 #include "nsIServiceManager.h"
16 #include "nsIClipboard.h"
17 #include "mozilla/dom/Document.h"
18 #include "nsITransferable.h"
19 #include "nsReadableUtils.h"
21 NS_IMPL_ISUPPORTS(nsClipboardHelper
, nsIClipboardHelper
)
23 /*****************************************************************************
24 * nsClipboardHelper ctor / dtor
25 *****************************************************************************/
27 nsClipboardHelper::nsClipboardHelper() {}
29 nsClipboardHelper::~nsClipboardHelper() {
30 // no members, nothing to destroy
33 /*****************************************************************************
34 * nsIClipboardHelper methods
35 *****************************************************************************/
38 nsClipboardHelper::CopyStringToClipboard(const nsAString
& aString
,
39 int32_t aClipboardID
) {
43 nsCOMPtr
<nsIClipboard
> clipboard(
44 do_GetService("@mozilla.org/widget/clipboard;1", &rv
));
45 NS_ENSURE_SUCCESS(rv
, rv
);
46 NS_ENSURE_TRUE(clipboard
, NS_ERROR_FAILURE
);
48 bool clipboardSupported
;
49 // don't go any further if they're asking for the selection
50 // clipboard on a platform which doesn't support it (i.e., unix)
51 if (nsIClipboard::kSelectionClipboard
== aClipboardID
) {
52 rv
= clipboard
->SupportsSelectionClipboard(&clipboardSupported
);
53 NS_ENSURE_SUCCESS(rv
, rv
);
54 if (!clipboardSupported
) return NS_ERROR_FAILURE
;
57 // don't go any further if they're asking for the find clipboard on a platform
58 // which doesn't support it (i.e., non-osx)
59 if (nsIClipboard::kFindClipboard
== aClipboardID
) {
60 rv
= clipboard
->SupportsFindClipboard(&clipboardSupported
);
61 NS_ENSURE_SUCCESS(rv
, rv
);
62 if (!clipboardSupported
) return NS_ERROR_FAILURE
;
65 // create a transferable for putting data on the clipboard
66 nsCOMPtr
<nsITransferable
> trans(
67 do_CreateInstance("@mozilla.org/widget/transferable;1", &rv
));
68 NS_ENSURE_SUCCESS(rv
, rv
);
69 NS_ENSURE_TRUE(trans
, NS_ERROR_FAILURE
);
73 // Add the text data flavor to the transferable
74 rv
= trans
->AddDataFlavor(kUnicodeMime
);
75 NS_ENSURE_SUCCESS(rv
, rv
);
77 // get wStrings to hold clip data
78 nsCOMPtr
<nsISupportsString
> data(
79 do_CreateInstance("@mozilla.org/supports-string;1", &rv
));
80 NS_ENSURE_SUCCESS(rv
, rv
);
81 NS_ENSURE_TRUE(data
, NS_ERROR_FAILURE
);
83 // populate the string
84 rv
= data
->SetData(aString
);
85 NS_ENSURE_SUCCESS(rv
, rv
);
87 // qi the data object an |nsISupports| so that when the transferable holds
88 // onto it, it will addref the correct interface.
89 nsCOMPtr
<nsISupports
> genericData(do_QueryInterface(data
, &rv
));
90 NS_ENSURE_SUCCESS(rv
, rv
);
91 NS_ENSURE_TRUE(genericData
, NS_ERROR_FAILURE
);
93 // set the transfer data
94 rv
= trans
->SetTransferData(kUnicodeMime
, genericData
);
95 NS_ENSURE_SUCCESS(rv
, rv
);
97 // put the transferable on the clipboard
98 rv
= clipboard
->SetData(trans
, nullptr, aClipboardID
);
99 NS_ENSURE_SUCCESS(rv
, rv
);
105 nsClipboardHelper::CopyString(const nsAString
& aString
) {
108 // copy to the global clipboard. it's bad if this fails in any way.
109 rv
= CopyStringToClipboard(aString
, nsIClipboard::kGlobalClipboard
);
110 NS_ENSURE_SUCCESS(rv
, rv
);
112 // unix also needs us to copy to the selection clipboard. this will
113 // fail in CopyStringToClipboard if we're not on a platform that
114 // supports the selection clipboard. (this could have been #ifdef
115 // XP_UNIX, but using the SupportsSelectionClipboard call is the
116 // more correct thing to do.
118 // if this fails in any way other than "not being unix", we'll get
119 // the assertion we need in CopyStringToClipboard, and we needn't
120 // assert again here.
121 CopyStringToClipboard(aString
, nsIClipboard::kSelectionClipboard
);