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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "chrome/browser/printing/printer_manager_dialog.h"
      6 
      7 #include "base/bind.h"
      8 #include "base/environment.h"
      9 #include "base/memory/scoped_ptr.h"
     10 #include "base/message_loop/message_loop.h"
     11 #include "base/nix/xdg_util.h"
     12 #include "base/process/kill.h"
     13 #include "base/process/launch.h"
     14 #include "content/public/browser/browser_thread.h"
     15 
     16 using base::Environment;
     17 using content::BrowserThread;
     18 
     19 namespace {
     20 
     21 // KDE printer config command ("system-config-printer-kde") causes the
     22 // OptionWidget to crash (https://bugs.kde.org/show_bug.cgi?id=271957).
     23 // Therefore, use GNOME printer config command for KDE.
     24 const char kGNOMEPrinterConfigCommand[] = "system-config-printer";
     25 
     26 // Detect the command based on the deskop environment and open the printer
     27 // manager dialog.
     28 void DetectAndOpenPrinterConfigDialog() {
     29   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
     30   scoped_ptr<Environment> env(Environment::Create());
     31 
     32   const char* command = NULL;
     33   switch (base::nix::GetDesktopEnvironment(env.get())) {
     34     case base::nix::DESKTOP_ENVIRONMENT_GNOME:
     35     case base::nix::DESKTOP_ENVIRONMENT_KDE3:
     36     case base::nix::DESKTOP_ENVIRONMENT_KDE4:
     37     case base::nix::DESKTOP_ENVIRONMENT_UNITY:
     38       command = kGNOMEPrinterConfigCommand;
     39       break;
     40     case base::nix::DESKTOP_ENVIRONMENT_XFCE:
     41     case base::nix::DESKTOP_ENVIRONMENT_OTHER:
     42       break;
     43   }
     44 
     45   if (!command) {
     46     LOG(ERROR) << "Failed to detect the command to open printer config dialog";
     47     return;
     48   }
     49 
     50   std::vector<std::string> argv;
     51   argv.push_back(command);
     52   base::ProcessHandle handle;
     53   if (!base::LaunchProcess(argv, base::LaunchOptions(), &handle)) {
     54     LOG(ERROR) << "Failed to open printer manager dialog ";
     55     return;
     56   }
     57   base::EnsureProcessGetsReaped(handle);
     58 }
     59 
     60 }  // anonymous namespace
     61 
     62 namespace printing {
     63 
     64 void PrinterManagerDialog::ShowPrinterManagerDialog() {
     65   BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
     66                           base::Bind(&DetectAndOpenPrinterConfigDialog));
     67 }
     68 
     69 }  // namespace printing
     70