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/* -*- 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/intl/Localization.h"
#include "xpcpublic.h"
using mozilla::ErrorResult;
using mozilla::intl::Localization;
using PrinterInfo = nsPrinterListBase::PrinterInfo;
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);
}