diff options
Diffstat (limited to 'widget/nsPrinterListBase.cpp')
| -rw-r--r-- | widget/nsPrinterListBase.cpp | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/widget/nsPrinterListBase.cpp b/widget/nsPrinterListBase.cpp new file mode 100644 index 0000000000..a362474cb5 --- /dev/null +++ b/widget/nsPrinterListBase.cpp @@ -0,0 +1,168 @@ +/* -*- Mode: C++; tab-width: 4; 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 "nsPrinterListBase.h" +#include "PrintBackgroundTask.h" +#include "mozilla/ErrorResult.h" +#include "mozilla/gfx/Rect.h" +#include "mozilla/IntegerRange.h" +#include "mozilla/intl/Localization.h" +#include "mozilla/Maybe.h" +#include "mozilla/RefPtr.h" +#include "xpcpublic.h" + +using namespace mozilla; + +using mozilla::ErrorResult; +using mozilla::intl::Localization; +using PrinterInfo = nsPrinterListBase::PrinterInfo; +using MarginDouble = mozilla::gfx::MarginDouble; + +nsPrinterListBase::nsPrinterListBase() = default; +nsPrinterListBase::~nsPrinterListBase() = default; + +NS_IMPL_CYCLE_COLLECTION(nsPrinterListBase, mPrintersPromise) + +NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsPrinterListBase) + NS_INTERFACE_MAP_ENTRY(nsIPrinterList) + NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIPrinterList) +NS_INTERFACE_MAP_END + +NS_IMPL_CYCLE_COLLECTING_ADDREF(nsPrinterListBase) +NS_IMPL_CYCLE_COLLECTING_RELEASE(nsPrinterListBase) + +namespace mozilla { + +template <> +void ResolveOrReject(dom::Promise& aPromise, nsPrinterListBase& aList, + const nsTArray<PrinterInfo>& aInfo) { + nsTArray<RefPtr<nsIPrinter>> printers; + printers.SetCapacity(aInfo.Length()); + for (auto& info : aInfo) { + printers.AppendElement(aList.CreatePrinter(info)); + } + aPromise.MaybeResolve(printers); +} + +template <> +void ResolveOrReject(dom::Promise& aPromise, nsPrinterListBase& aList, + const Maybe<PrinterInfo>& aInfo) { + if (aInfo) { + aPromise.MaybeResolve(aList.CreatePrinter(aInfo.value())); + } else { + aPromise.MaybeRejectWithNotFoundError("Printer not found"); + } +} + +} // namespace mozilla + +NS_IMETHODIMP nsPrinterListBase::GetPrinters(JSContext* aCx, + Promise** aResult) { + EnsureCommonPaperInfo(aCx); + return mozilla::AsyncPromiseAttributeGetter(*this, mPrintersPromise, aCx, + aResult, "Printers"_ns, + &nsPrinterListBase::Printers); +} + +NS_IMETHODIMP nsPrinterListBase::GetPrinterByName(const nsAString& aPrinterName, + JSContext* aCx, + Promise** aResult) { + EnsureCommonPaperInfo(aCx); + return PrintBackgroundTaskPromise(*this, aCx, aResult, "PrinterByName"_ns, + &nsPrinterListBase::PrinterByName, + nsString{aPrinterName}); +} + +NS_IMETHODIMP nsPrinterListBase::GetPrinterBySystemName( + const nsAString& aPrinterName, JSContext* aCx, Promise** aResult) { + EnsureCommonPaperInfo(aCx); + return PrintBackgroundTaskPromise( + *this, aCx, aResult, "PrinterBySystemName"_ns, + &nsPrinterListBase::PrinterBySystemName, nsString{aPrinterName}); +} + +NS_IMETHODIMP nsPrinterListBase::GetNamedOrDefaultPrinter( + const nsAString& aPrinterName, JSContext* aCx, Promise** aResult) { + EnsureCommonPaperInfo(aCx); + return PrintBackgroundTaskPromise( + *this, aCx, aResult, "NamedOrDefaultPrinter"_ns, + &nsPrinterListBase::NamedOrDefaultPrinter, nsString{aPrinterName}); +} + +Maybe<PrinterInfo> nsPrinterListBase::NamedOrDefaultPrinter( + nsString aName) const { + if (Maybe<PrinterInfo> value = PrinterByName(std::move(aName))) { + return value; + } + + // Since the name had to be passed by-value, we can re-use it to fetch the + // default printer name, potentially avoiding an extra string allocation. + if (NS_SUCCEEDED(SystemDefaultPrinterName(aName))) { + return PrinterByName(std::move(aName)); + } + + return Nothing(); +} + +NS_IMETHODIMP nsPrinterListBase::GetFallbackPaperList(JSContext* aCx, + Promise** aResult) { + ErrorResult rv; + nsCOMPtr<nsIGlobalObject> global = xpc::CurrentNativeGlobal(aCx); + RefPtr<Promise> promise = Promise::Create(global, rv); + if (MOZ_UNLIKELY(rv.Failed())) { + *aResult = nullptr; + return rv.StealNSResult(); + } + + EnsureCommonPaperInfo(aCx); + nsTArray<RefPtr<nsPaper>> papers; + papers.SetCapacity(nsPaper::kNumCommonPaperSizes); + for (const auto& info : *mCommonPaperInfo) { + papers.AppendElement(MakeRefPtr<nsPaper>(info)); + } + + promise->MaybeResolve(papers); + promise.forget(aResult); + return NS_OK; +} + +void nsPrinterListBase::EnsureCommonPaperInfo(JSContext* aCx) { + MOZ_DIAGNOSTIC_ASSERT(NS_IsMainThread()); + if (mCommonPaperInfo) { + return; + } + RefPtr<CommonPaperInfoArray> localizedPaperInfo = + MakeRefPtr<CommonPaperInfoArray>(); + CommonPaperInfoArray& paperArray = *localizedPaperInfo; + // Apply localization to the names while constructing the PaperInfo, if + // available (otherwise leave them as the internal keys, which are at least + // somewhat recognizable). + IgnoredErrorResult rv; + nsTArray<nsCString> resIds = { + "toolkit/printing/printUI.ftl"_ns, + }; + RefPtr<Localization> l10n = Localization::Create(resIds, true); + + for (auto i : IntegerRange(nsPaper::kNumCommonPaperSizes)) { + const CommonPaperSize& size = nsPaper::kCommonPaperSizes[i]; + PaperInfo& info = paperArray[i]; + + nsAutoCString key{"printui-paper-"}; + key.Append(size.mLocalizableNameKey); + nsAutoCString name; + l10n->FormatValueSync(key, {}, name, rv); + + // Fill out the info with our PWG size and the localized name. + info.mId = size.mPWGName; + CopyUTF8toUTF16( + (rv.Failed() || name.IsEmpty()) + ? static_cast<const nsCString&>(size.mLocalizableNameKey) + : name, + info.mName); + info.mSize = size.mSize; + info.mUnwriteableMargin = Some(MarginDouble{}); + } + mCommonPaperInfo = std::move(localizedPaperInfo); +} |