src/chrome/browser/chromeos/dbus/printer_service_provider.cc

   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/chromeos/dbus/printer_service_provider.h"
   6
   7 #include "ash/session/session_state_delegate.h"
   8 #include "ash/shell.h"
   9 #include "ash/wm/window_util.h"
  10 #include "base/bind.h"
  11 #include "base/bind_helpers.h"
  12 #include "base/metrics/histogram.h"
  13 #include "base/strings/stringprintf.h"
  14 #include "chrome/browser/profiles/profile_manager.h"
  15 #include "chrome/browser/ui/browser.h"
  16 #include "chrome/browser/ui/browser_tabstrip.h"
  17 #include "chrome/browser/ui/browser_window.h"
  18 #include "chrome/browser/ui/scoped_tabbed_browser_displayer.h"
  19 #include "chrome/browser/ui/tab_contents/tab_contents_iterator.h"
  20 #include "chrome/browser/ui/tabs/tab_strip_model.h"
  21 #include "content/public/browser/browser_thread.h"
  22 #include "content/public/browser/web_contents.h"
  23 #include "dbus/bus.h"
  24 #include "dbus/exported_object.h"
  25 #include "dbus/message.h"
  26 #include "net/base/escape.h"
  27 #include "third_party/cros_system_api/dbus/service_constants.h"
  28 #include "ui/aura/window.h"
  29
  30 namespace {
  31
  32 const char kPrinterAdded[] = "PrinterAdded";
  33
  34 enum PrinterServiceEvent {
  35   PRINTER_ADDED,
  36   PAGE_DISPLAYED,
  37   PRINTER_SERVICE_EVENT_MAX,
  38 };
  39
  40 // TODO(vitalybuka): update URL with more relevant information.
  41 const char kCloudPrintLearnUrl[] =
  42     "https://www.google.com/landing/cloudprint/index.html";
  43
  44 void ActivateContents(Browser* browser, content::WebContents* contents) {
  45   browser->tab_strip_model()->ActivateTabAt(
  46       browser->tab_strip_model()->GetIndexOfWebContents(contents), false);
  47 }
  48
  49 Browser* ActivateAndGetBrowserForUrl(GURL url) {
  50   for (TabContentsIterator it; !it.done(); it.Next()) {
  51     if (it->GetLastCommittedURL() == url) {
  52       ActivateContents(it.browser(), *it);
  53       return it.browser();
  54     }
  55   }
  56   return NULL;
  57 }
  58
  59 void FindOrOpenCloudPrintPage(const std::string& /* vendor */,
  60                               const std::string& /* product */) {
  61   UMA_HISTOGRAM_ENUMERATION("PrinterService.PrinterServiceEvent", PRINTER_ADDED,
  62                             PRINTER_SERVICE_EVENT_MAX);
  63   if (!ash::Shell::GetInstance()->session_state_delegate()->
  64           IsActiveUserSessionStarted() ||
  65       ash::Shell::GetInstance()->session_state_delegate()->IsScreenLocked()) {
  66     return;
  67   }
  68
  69   Profile* profile = ProfileManager::GetLastUsedProfile();
  70   if (!profile)
  71     return;
  72
  73   GURL url(kCloudPrintLearnUrl);
  74
  75   if (!ActivateAndGetBrowserForUrl(url)) {
  76     chrome::ScopedTabbedBrowserDisplayer displayer(
  77         profile, chrome::HOST_DESKTOP_TYPE_ASH);
  78     UMA_HISTOGRAM_ENUMERATION("PrinterService.PrinterServiceEvent",
  79                               PAGE_DISPLAYED, PRINTER_SERVICE_EVENT_MAX);
  80     chrome::AddSelectedTabWithURL(displayer.browser(), url,
  81                                   ui::PAGE_TRANSITION_LINK);
  82   }
  83 }
  84
  85 }  // namespace
  86
  87 namespace chromeos {
  88
  89 PrinterServiceProvider::PrinterServiceProvider()
  90     : weak_ptr_factory_(this) {
  91 }
  92
  93 PrinterServiceProvider::~PrinterServiceProvider() {
  94 }
  95
  96 void PrinterServiceProvider::Start(
  97     scoped_refptr<dbus::ExportedObject> exported_object) {
  98
  99   exported_object_ = exported_object;
 100   DVLOG(1) << "PrinterServiceProvider started";
 101   exported_object_->ExportMethod(
 102       kLibCrosServiceInterface,
 103       kPrinterAdded,
 104       base::Bind(&PrinterServiceProvider::PrinterAdded,
 105                  weak_ptr_factory_.GetWeakPtr()),
 106       base::Bind(&PrinterServiceProvider::OnExported,
 107                  weak_ptr_factory_.GetWeakPtr()));
 108 }
 109
 110 void PrinterServiceProvider::OnExported(
 111     const std::string& interface_name,
 112     const std::string& method_name,
 113     bool success) {
 114   if (!success) {
 115     LOG(ERROR) << "Failed to export " << interface_name << "."
 116                << method_name;
 117   }
 118   DVLOG(1) << "Method exported: " << interface_name << "." << method_name;
 119 }
 120
 121 void PrinterServiceProvider::ShowCloudPrintHelp(const std::string& vendor,
 122                                                 const std::string& product) {
 123   content::BrowserThread::PostTask(content::BrowserThread::UI, FROM_HERE,
 124                                    base::Bind(&FindOrOpenCloudPrintPage, vendor,
 125                                               product));
 126 }
 127
 128 void PrinterServiceProvider::PrinterAdded(
 129     dbus::MethodCall* method_call,
 130     dbus::ExportedObject::ResponseSender response_sender) {
 131   DVLOG(1) << "PrinterAdded " << method_call->ToString();
 132
 133   dbus::MessageReader reader(method_call);
 134   std::string vendor;
 135   std::string product;
 136   // Don't check for error, parameters are optional. If some string is empty
 137   // web server will show generic help page.
 138   reader.PopString(&vendor);
 139   reader.PopString(&product);
 140   ShowCloudPrintHelp(vendor, product);
 141
 142   // Send an empty response.
 143   response_sender.Run(dbus::Response::FromMethodCall(method_call));
 144 }
 145
 146 }  // namespace chromeos
 147