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/* -*- 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 "mozilla/Logging.h"
#include "nsIClipboardOwner.h"
#include "nsCOMPtr.h"
#include "nsError.h"
#include "nsXPCOM.h"
using mozilla::GenericPromise;
using mozilla::LogLevel;
nsBaseClipboard::nsBaseClipboard() : mEmptyingForSetData(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");
CLIPBOARD_LOG("%s", __FUNCTION__);
if (aTransferable == mTransferable && anOwner == mClipboardOwner) {
CLIPBOARD_LOG("%s: skipping update.", __FUNCTION__);
return NS_OK;
}
bool selectClipPresent;
SupportsSelectionClipboard(&selectClipPresent);
bool findClipPresent;
SupportsFindClipboard(&findClipPresent);
if (!selectClipPresent && !findClipPresent &&
aWhichClipboard != kGlobalClipboard)
return NS_ERROR_FAILURE;
mEmptyingForSetData = true;
if (NS_FAILED(EmptyClipboard(aWhichClipboard))) {
CLIPBOARD_LOG("%s: emptying clipboard failed.", __FUNCTION__);
}
mEmptyingForSetData = false;
mClipboardOwner = anOwner;
mTransferable = aTransferable;
nsresult rv = NS_ERROR_FAILURE;
if (mTransferable) {
mIgnoreEmptyNotification = true;
rv = SetNativeClipboardData(aWhichClipboard);
mIgnoreEmptyNotification = false;
}
if (NS_FAILED(rv)) {
CLIPBOARD_LOG("%s: setting native clipboard data failed.", __FUNCTION__);
}
return rv;
}
/**
* Gets the transferable object
*
*/
NS_IMETHODIMP nsBaseClipboard::GetData(nsITransferable* aTransferable,
int32_t aWhichClipboard) {
NS_ASSERTION(aTransferable, "clipboard given a null transferable");
CLIPBOARD_LOG("%s", __FUNCTION__);
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;
}
RefPtr<GenericPromise> nsBaseClipboard::AsyncGetData(
nsITransferable* aTransferable, int32_t aWhichClipboard) {
nsresult rv = GetData(aTransferable, aWhichClipboard);
if (NS_FAILED(rv)) {
return GenericPromise::CreateAndReject(rv, __func__);
}
return GenericPromise::CreateAndResolve(true, __func__);
}
NS_IMETHODIMP nsBaseClipboard::EmptyClipboard(int32_t aWhichClipboard) {
CLIPBOARD_LOG("%s: clipboard=%i", __FUNCTION__, 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;
}
RefPtr<DataFlavorsPromise> nsBaseClipboard::AsyncHasDataMatchingFlavors(
const nsTArray<nsCString>& aFlavorList, int32_t aWhichClipboard) {
nsTArray<nsCString> results;
for (const auto& flavor : aFlavorList) {
bool hasMatchingFlavor = false;
nsresult rv = HasDataMatchingFlavors(AutoTArray<nsCString, 1>{flavor},
aWhichClipboard, &hasMatchingFlavor);
if (NS_SUCCEEDED(rv) && hasMatchingFlavor) {
results.AppendElement(flavor);
}
}
return DataFlavorsPromise::CreateAndResolve(std::move(results), __func__);
}
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;
}
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