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
ActivateContents(Browser * browser,content::WebContents * contents)44 void ActivateContents(Browser* browser, content::WebContents* contents) {
45 browser->tab_strip_model()->ActivateTabAt(
46 browser->tab_strip_model()->GetIndexOfWebContents(contents), false);
47 }
48
ActivateAndGetBrowserForUrl(GURL url)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
FindOrOpenCloudPrintPage(const std::string &,const std::string &)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
PrinterServiceProvider()89 PrinterServiceProvider::PrinterServiceProvider()
90 : weak_ptr_factory_(this) {
91 }
92
~PrinterServiceProvider()93 PrinterServiceProvider::~PrinterServiceProvider() {
94 }
95
Start(scoped_refptr<dbus::ExportedObject> exported_object)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
OnExported(const std::string & interface_name,const std::string & method_name,bool success)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
ShowCloudPrintHelp(const std::string & vendor,const std::string & product)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
PrinterAdded(dbus::MethodCall * method_call,dbus::ExportedObject::ResponseSender response_sender)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
148