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Diffstat (limited to '')
-rw-r--r-- | widget/nsBaseClipboard.cpp | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/widget/nsBaseClipboard.cpp b/widget/nsBaseClipboard.cpp new file mode 100644 index 0000000000..91da56d0ad --- /dev/null +++ b/widget/nsBaseClipboard.cpp @@ -0,0 +1,117 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* 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 "nsBaseClipboard.h" + +#include "nsIClipboardOwner.h" +#include "nsCOMPtr.h" +#include "nsXPCOM.h" + +nsBaseClipboard::nsBaseClipboard() + : mEmptyingForSetData(false), mIgnoreEmptyNotification(false) {} + +nsBaseClipboard::~nsBaseClipboard() { + EmptyClipboard(kSelectionClipboard); + EmptyClipboard(kGlobalClipboard); + EmptyClipboard(kFindClipboard); +} + +NS_IMPL_ISUPPORTS(nsBaseClipboard, nsIClipboard) + +/** + * Sets the transferable object + * + */ +NS_IMETHODIMP nsBaseClipboard::SetData(nsITransferable* aTransferable, + nsIClipboardOwner* anOwner, + int32_t aWhichClipboard) { + NS_ASSERTION(aTransferable, "clipboard given a null transferable"); + + if (aTransferable == mTransferable && anOwner == mClipboardOwner) + return NS_OK; + bool selectClipPresent; + SupportsSelectionClipboard(&selectClipPresent); + bool findClipPresent; + SupportsFindClipboard(&findClipPresent); + if (!selectClipPresent && !findClipPresent && + aWhichClipboard != kGlobalClipboard) + return NS_ERROR_FAILURE; + + mEmptyingForSetData = true; + EmptyClipboard(aWhichClipboard); + mEmptyingForSetData = false; + + mClipboardOwner = anOwner; + mTransferable = aTransferable; + + nsresult rv = NS_ERROR_FAILURE; + if (mTransferable) { + rv = SetNativeClipboardData(aWhichClipboard); + } + + return rv; +} + +/** + * Gets the transferable object + * + */ +NS_IMETHODIMP nsBaseClipboard::GetData(nsITransferable* aTransferable, + int32_t aWhichClipboard) { + NS_ASSERTION(aTransferable, "clipboard given a null transferable"); + + bool selectClipPresent; + SupportsSelectionClipboard(&selectClipPresent); + bool findClipPresent; + SupportsFindClipboard(&findClipPresent); + if (!selectClipPresent && !findClipPresent && + aWhichClipboard != kGlobalClipboard) + return NS_ERROR_FAILURE; + + if (aTransferable) + return GetNativeClipboardData(aTransferable, aWhichClipboard); + + return NS_ERROR_FAILURE; +} + +NS_IMETHODIMP nsBaseClipboard::EmptyClipboard(int32_t aWhichClipboard) { + bool selectClipPresent; + SupportsSelectionClipboard(&selectClipPresent); + bool findClipPresent; + SupportsFindClipboard(&findClipPresent); + if (!selectClipPresent && !findClipPresent && + aWhichClipboard != kGlobalClipboard) + return NS_ERROR_FAILURE; + + if (mIgnoreEmptyNotification) return NS_OK; + + if (mClipboardOwner) { + mClipboardOwner->LosingOwnership(mTransferable); + mClipboardOwner = nullptr; + } + + mTransferable = nullptr; + return NS_OK; +} + +NS_IMETHODIMP +nsBaseClipboard::HasDataMatchingFlavors(const nsTArray<nsCString>& aFlavorList, + int32_t aWhichClipboard, + bool* outResult) { + *outResult = true; // say we always do. + return NS_OK; +} + +NS_IMETHODIMP +nsBaseClipboard::SupportsSelectionClipboard(bool* _retval) { + *_retval = false; // we don't support the selection clipboard by default. + return NS_OK; +} + +NS_IMETHODIMP +nsBaseClipboard::SupportsFindClipboard(bool* _retval) { + *_retval = false; // we don't support the find clipboard by default. + return NS_OK; +} |