The Tor Browser / file comparison
comparison: widget/xpwidgets/nsClipboardHelper.cpp
widget/xpwidgets/nsClipboardHelper.cpp
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:8ce0be08461d |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- | |
| 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/. */ | |
| 6 | |
| 7 #include "nsClipboardHelper.h" | |
| 8 | |
| 9 // basics | |
| 10 #include "nsCOMPtr.h" | |
| 11 #include "nsXPCOM.h" | |
| 12 #include "nsISupportsPrimitives.h" | |
| 13 #include "nsIServiceManager.h" | |
| 14 | |
| 15 // helpers | |
| 16 #include "nsIClipboard.h" | |
| 17 #include "nsIDocument.h" | |
| 18 #include "nsIDOMDocument.h" | |
| 19 #include "nsITransferable.h" | |
| 20 #include "nsReadableUtils.h" | |
| 21 | |
| 22 NS_IMPL_ISUPPORTS(nsClipboardHelper, nsIClipboardHelper) | |
| 23 | |
| 24 /***************************************************************************** | |
| 25 * nsClipboardHelper ctor / dtor | |
| 26 *****************************************************************************/ | |
| 27 | |
| 28 nsClipboardHelper::nsClipboardHelper() | |
| 29 { | |
| 30 } | |
| 31 | |
| 32 nsClipboardHelper::~nsClipboardHelper() | |
| 33 { | |
| 34 // no members, nothing to destroy | |
| 35 } | |
| 36 | |
| 37 /***************************************************************************** | |
| 38 * nsIClipboardHelper methods | |
| 39 *****************************************************************************/ | |
| 40 | |
| 41 NS_IMETHODIMP | |
| 42 nsClipboardHelper::CopyStringToClipboard(const nsAString& aString, | |
| 43 int32_t aClipboardID, | |
| 44 nsIDOMDocument* aDocument) | |
| 45 { | |
| 46 nsresult rv; | |
| 47 | |
| 48 // get the clipboard | |
| 49 nsCOMPtr<nsIClipboard> | |
| 50 clipboard(do_GetService("@mozilla.org/widget/clipboard;1", &rv)); | |
| 51 NS_ENSURE_SUCCESS(rv, rv); | |
| 52 NS_ENSURE_TRUE(clipboard, NS_ERROR_FAILURE); | |
| 53 | |
| 54 bool clipboardSupported; | |
| 55 // don't go any further if they're asking for the selection | |
| 56 // clipboard on a platform which doesn't support it (i.e., unix) | |
| 57 if (nsIClipboard::kSelectionClipboard == aClipboardID) { | |
| 58 rv = clipboard->SupportsSelectionClipboard(&clipboardSupported); | |
| 59 NS_ENSURE_SUCCESS(rv, rv); | |
| 60 if (!clipboardSupported) | |
| 61 return NS_ERROR_FAILURE; | |
| 62 } | |
| 63 | |
| 64 // don't go any further if they're asking for the find clipboard on a platform | |
| 65 // which doesn't support it (i.e., non-osx) | |
| 66 if (nsIClipboard::kFindClipboard == aClipboardID) { | |
| 67 rv = clipboard->SupportsFindClipboard(&clipboardSupported); | |
| 68 NS_ENSURE_SUCCESS(rv, rv); | |
| 69 if (!clipboardSupported) | |
| 70 return NS_ERROR_FAILURE; | |
| 71 } | |
| 72 | |
| 73 // create a transferable for putting data on the clipboard | |
| 74 nsCOMPtr<nsITransferable> | |
| 75 trans(do_CreateInstance("@mozilla.org/widget/transferable;1", &rv)); | |
| 76 NS_ENSURE_SUCCESS(rv, rv); | |
| 77 NS_ENSURE_TRUE(trans, NS_ERROR_FAILURE); | |
| 78 | |
| 79 nsCOMPtr<nsIDocument> doc = do_QueryInterface(aDocument); | |
| 80 nsILoadContext* loadContext = doc ? doc->GetLoadContext() : nullptr; | |
| 81 trans->Init(loadContext); | |
| 82 | |
| 83 // Add the text data flavor to the transferable | |
| 84 rv = trans->AddDataFlavor(kUnicodeMime); | |
| 85 NS_ENSURE_SUCCESS(rv, rv); | |
| 86 | |
| 87 // get wStrings to hold clip data | |
| 88 nsCOMPtr<nsISupportsString> | |
| 89 data(do_CreateInstance("@mozilla.org/supports-string;1", &rv)); | |
| 90 NS_ENSURE_SUCCESS(rv, rv); | |
| 91 NS_ENSURE_TRUE(data, NS_ERROR_FAILURE); | |
| 92 | |
| 93 // populate the string | |
| 94 rv = data->SetData(aString); | |
| 95 NS_ENSURE_SUCCESS(rv, rv); | |
| 96 | |
| 97 // qi the data object an |nsISupports| so that when the transferable holds | |
| 98 // onto it, it will addref the correct interface. | |
| 99 nsCOMPtr<nsISupports> genericData(do_QueryInterface(data, &rv)); | |
| 100 NS_ENSURE_SUCCESS(rv, rv); | |
| 101 NS_ENSURE_TRUE(genericData, NS_ERROR_FAILURE); | |
| 102 | |
| 103 // set the transfer data | |
| 104 rv = trans->SetTransferData(kUnicodeMime, genericData, | |
| 105 aString.Length() * 2); | |
| 106 NS_ENSURE_SUCCESS(rv, rv); | |
| 107 | |
| 108 // put the transferable on the clipboard | |
| 109 rv = clipboard->SetData(trans, nullptr, aClipboardID); | |
| 110 NS_ENSURE_SUCCESS(rv, rv); | |
| 111 | |
| 112 return NS_OK; | |
| 113 } | |
| 114 | |
| 115 NS_IMETHODIMP | |
| 116 nsClipboardHelper::CopyString(const nsAString& aString, nsIDOMDocument* aDocument) | |
| 117 { | |
| 118 nsresult rv; | |
| 119 | |
| 120 // copy to the global clipboard. it's bad if this fails in any way. | |
| 121 rv = CopyStringToClipboard(aString, nsIClipboard::kGlobalClipboard, aDocument); | |
| 122 NS_ENSURE_SUCCESS(rv, rv); | |
| 123 | |
| 124 // unix also needs us to copy to the selection clipboard. this will | |
| 125 // fail in CopyStringToClipboard if we're not on a platform that | |
| 126 // supports the selection clipboard. (this could have been #ifdef | |
| 127 // XP_UNIX, but using the SupportsSelectionClipboard call is the | |
| 128 // more correct thing to do. | |
| 129 // | |
| 130 // if this fails in any way other than "not being unix", we'll get | |
| 131 // the assertion we need in CopyStringToClipboard, and we needn't | |
| 132 // assert again here. | |
| 133 CopyStringToClipboard(aString, nsIClipboard::kSelectionClipboard, aDocument); | |
| 134 | |
| 135 return NS_OK; | |
| 136 } |
