114 lines
3.7 KiB
C++
114 lines
3.7 KiB
C++
// Copyright (c) 2020 Slack Technologies, Inc.
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// Use of this source code is governed by the MIT license that can be
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// found in the LICENSE file.
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#include "chrome/browser/browser_process.h"
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#include "gin/converter.h"
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#include "printing/buildflags/buildflags.h"
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#include "shell/common/gin_helper/dictionary.h"
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#include "shell/common/node_includes.h"
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#include "shell/common/thread_restrictions.h"
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#if BUILDFLAG(ENABLE_PRINTING)
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#include "base/task/task_traits.h"
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#include "base/task/thread_pool.h"
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#include "printing/backend/print_backend.h"
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#include "shell/common/gin_helper/promise.h"
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#include "shell/common/process_util.h"
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#endif
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namespace gin {
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#if BUILDFLAG(ENABLE_PRINTING)
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template <>
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struct Converter<printing::PrinterBasicInfo> {
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static v8::Local<v8::Value> ToV8(v8::Isolate* isolate,
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const printing::PrinterBasicInfo& val) {
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gin_helper::Dictionary dict = gin::Dictionary::CreateEmpty(isolate);
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dict.Set("name", val.printer_name);
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dict.Set("displayName", val.display_name);
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dict.Set("description", val.printer_description);
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dict.Set("status", val.printer_status);
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dict.Set("isDefault", val.is_default ? true : false);
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dict.Set("options", val.options);
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return dict.GetHandle();
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}
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};
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#endif
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} // namespace gin
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namespace electron::api {
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#if BUILDFLAG(ENABLE_PRINTING)
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printing::PrinterList GetPrinterList(v8::Isolate* isolate) {
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EmitWarning(node::Environment::GetCurrent(isolate),
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"Deprecation Warning: getPrinters() is deprecated. "
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"Use the asynchronous and non-blocking version, "
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"getPrintersAsync(), instead.",
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"electron");
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printing::PrinterList printers;
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auto print_backend = printing::PrintBackend::CreateInstance(
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g_browser_process->GetApplicationLocale());
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{
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ScopedAllowBlockingForElectron allow_blocking;
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printing::mojom::ResultCode code =
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print_backend->EnumeratePrinters(printers);
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if (code != printing::mojom::ResultCode::kSuccess)
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LOG(INFO) << "Failed to enumerate printers";
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}
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return printers;
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}
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v8::Local<v8::Promise> GetPrinterListAsync(v8::Isolate* isolate) {
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gin_helper::Promise<printing::PrinterList> promise(isolate);
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v8::Local<v8::Promise> handle = promise.GetHandle();
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base::ThreadPool::PostTaskAndReplyWithResult(
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FROM_HERE, {base::TaskPriority::USER_VISIBLE, base::MayBlock()},
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base::BindOnce([]() {
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printing::PrinterList printers;
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auto print_backend = printing::PrintBackend::CreateInstance(
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g_browser_process->GetApplicationLocale());
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printing::mojom::ResultCode code =
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print_backend->EnumeratePrinters(printers);
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if (code != printing::mojom::ResultCode::kSuccess)
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LOG(INFO) << "Failed to enumerate printers";
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return printers;
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}),
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base::BindOnce(
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[](gin_helper::Promise<printing::PrinterList> promise,
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const printing::PrinterList& printers) {
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promise.Resolve(printers);
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},
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std::move(promise)));
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return handle;
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}
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#endif
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} // namespace electron::api
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namespace {
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#if BUILDFLAG(ENABLE_PRINTING)
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using electron::api::GetPrinterList;
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using electron::api::GetPrinterListAsync;
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#endif
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void Initialize(v8::Local<v8::Object> exports,
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v8::Local<v8::Value> unused,
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v8::Local<v8::Context> context,
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void* priv) {
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v8::Isolate* isolate = context->GetIsolate();
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gin_helper::Dictionary dict(isolate, exports);
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#if BUILDFLAG(ENABLE_PRINTING)
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dict.SetMethod("getPrinterList", base::BindRepeating(&GetPrinterList));
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dict.SetMethod("getPrinterListAsync",
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base::BindRepeating(&GetPrinterListAsync));
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#endif
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}
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} // namespace
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NODE_LINKED_BINDING_CONTEXT_AWARE(electron_browser_printing, Initialize)
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