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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/printing/printer_manager_dialog.h"
#include <memory>
#include "base/bind.h"
#include "base/environment.h"
#include "base/files/file_util.h"
#include "base/nix/xdg_util.h"
#include "base/process/kill.h"
#include "base/process/launch.h"
#include "base/task_scheduler/post_task.h"
#include "base/threading/thread_restrictions.h"
namespace {
// KDE printer config command ("system-config-printer-kde") causes the
// OptionWidget to crash (https://bugs.kde.org/show_bug.cgi?id=271957).
// Therefore, use GNOME printer config command for KDE.
const char* const kSystemConfigPrinterCommand[] = {"system-config-printer",
nullptr};
const char* const kGnomeControlCenterPrintersCommand[] = {
"gnome-control-center", "printers", nullptr};
// Returns true if the dialog was opened successfully.
bool OpenPrinterConfigDialog(const char* const* command) {
DCHECK(command);
std::unique_ptr<base::Environment> env(base::Environment::Create());
if (!base::ExecutableExistsInPath(env.get(), *command))
return false;
std::vector<std::string> argv;
while (*command)
argv.push_back(*command++);
base::Process process = base::LaunchProcess(argv, base::LaunchOptions());
if (!process.IsValid())
return false;
base::EnsureProcessGetsReaped(process.Pid());
return true;
}
// Detect the command based on the deskop environment and open the printer
// manager dialog.
void DetectAndOpenPrinterConfigDialog() {
base::ThreadRestrictions::AssertIOAllowed();
std::unique_ptr<base::Environment> env(base::Environment::Create());
bool opened = false;
switch (base::nix::GetDesktopEnvironment(env.get())) {
case base::nix::DESKTOP_ENVIRONMENT_GNOME:
opened = OpenPrinterConfigDialog(kSystemConfigPrinterCommand) ||
OpenPrinterConfigDialog(kGnomeControlCenterPrintersCommand);
break;
case base::nix::DESKTOP_ENVIRONMENT_KDE3:
case base::nix::DESKTOP_ENVIRONMENT_KDE4:
case base::nix::DESKTOP_ENVIRONMENT_KDE5:
case base::nix::DESKTOP_ENVIRONMENT_UNITY:
case base::nix::DESKTOP_ENVIRONMENT_XFCE:
opened = OpenPrinterConfigDialog(kSystemConfigPrinterCommand);
break;
case base::nix::DESKTOP_ENVIRONMENT_OTHER:
LOG(ERROR)
<< "Failed to detect the command to open printer config dialog";
return;
}
LOG_IF(ERROR, !opened) << "Failed to open printer manager dialog ";
}
} // namespace
namespace printing {
void PrinterManagerDialog::ShowPrinterManagerDialog() {
base::PostTaskWithTraits(
FROM_HERE, {base::MayBlock(), base::TaskPriority::USER_BLOCKING},
base::BindOnce(&DetectAndOpenPrinterConfigDialog));
}
} // namespace printing
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