1// Copyright 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/metro_viewer/chrome_metro_viewer_process_host_aurawin.h"
6
7#include "ash/display/display_info.h"
8#include "ash/display/display_manager.h"
9#include "ash/host/ash_remote_window_tree_host_win.h"
10#include "ash/shell.h"
11#include "ash/wm/window_positioner.h"
12#include "base/logging.h"
13#include "base/memory/ref_counted.h"
14#include "base/strings/stringprintf.h"
15#include "chrome/browser/browser_process.h"
16#include "chrome/browser/browser_process_platform_part_aurawin.h"
17#include "chrome/browser/browser_shutdown.h"
18#include "chrome/browser/chrome_notification_types.h"
19#include "chrome/browser/lifetime/application_lifetime.h"
20#include "chrome/browser/profiles/profile_manager.h"
21#include "chrome/browser/search_engines/template_url_service_factory.h"
22#include "chrome/browser/ui/ash/ash_init.h"
23#include "chrome/browser/ui/browser.h"
24#include "chrome/browser/ui/browser_list.h"
25#include "chrome/browser/ui/browser_navigator.h"
26#include "chrome/browser/ui/browser_window.h"
27#include "chrome/browser/ui/host_desktop.h"
28#include "chrome/browser/ui/tabs/tab_strip_model.h"
29#include "chrome/common/env_vars.h"
30#include "components/search_engines/util.h"
31#include "content/public/browser/browser_thread.h"
32#include "content/public/browser/gpu_data_manager.h"
33#include "content/public/browser/notification_service.h"
34#include "content/public/browser/page_navigator.h"
35#include "content/public/browser/web_contents.h"
36#include "ui/aura/remote_window_tree_host_win.h"
37#include "ui/gfx/win/dpi.h"
38#include "ui/metro_viewer/metro_viewer_messages.h"
39#include "url/gurl.h"
40
41namespace {
42
43void CloseOpenAshBrowsers() {
44  BrowserList* browser_list =
45      BrowserList::GetInstance(chrome::HOST_DESKTOP_TYPE_ASH);
46  if (browser_list) {
47    for (BrowserList::const_iterator i = browser_list->begin();
48         i != browser_list->end(); ++i) {
49      Browser* browser = *i;
50      browser->window()->Close();
51      // If the attempt to Close the browser fails due to unload handlers on
52      // the page or in progress downloads, etc, destroy all tabs on the page.
53      while (browser->tab_strip_model()->count())
54        delete browser->tab_strip_model()->GetWebContentsAt(0);
55    }
56  }
57}
58
59void OpenURL(const GURL& url) {
60  chrome::NavigateParams params(
61      ProfileManager::GetActiveUserProfile(),
62      GURL(url),
63      ui::PAGE_TRANSITION_TYPED);
64  params.disposition = NEW_FOREGROUND_TAB;
65  params.host_desktop_type = chrome::HOST_DESKTOP_TYPE_ASH;
66  chrome::Navigate(&params);
67}
68
69}  // namespace
70
71ChromeMetroViewerProcessHost::ChromeMetroViewerProcessHost()
72    : MetroViewerProcessHost(
73          content::BrowserThread::GetMessageLoopProxyForThread(
74              content::BrowserThread::IO)) {
75  chrome::IncrementKeepAliveCount();
76}
77
78ChromeMetroViewerProcessHost::~ChromeMetroViewerProcessHost() {
79}
80
81void ChromeMetroViewerProcessHost::OnChannelError() {
82  // TODO(cpu): At some point we only close the browser. Right now this
83  // is very convenient for developing.
84  DVLOG(1) << "viewer channel error : Quitting browser";
85
86  // Unset environment variable to let breakpad know that metro process wasn't
87  // connected.
88  ::SetEnvironmentVariableA(env_vars::kMetroConnected, NULL);
89
90  aura::RemoteWindowTreeHostWin::Instance()->Disconnected();
91  chrome::DecrementKeepAliveCount();
92
93  // If browser is trying to quit, we shouldn't reenter the process.
94  // TODO(shrikant): In general there seem to be issues with how AttemptExit
95  // reentry works. In future release please clean up related code.
96  if (!browser_shutdown::IsTryingToQuit()) {
97    CloseOpenAshBrowsers();
98    chrome::CloseAsh();
99  }
100  // Tell the rest of Chrome about it.
101  content::NotificationService::current()->Notify(
102      chrome::NOTIFICATION_ASH_SESSION_ENDED,
103      content::NotificationService::AllSources(),
104      content::NotificationService::NoDetails());
105
106  // This will delete the MetroViewerProcessHost object. Don't access member
107  // variables/functions after this call.
108  g_browser_process->platform_part()->OnMetroViewerProcessTerminated();
109}
110
111void ChromeMetroViewerProcessHost::OnChannelConnected(int32 /*peer_pid*/) {
112  DVLOG(1) << "ChromeMetroViewerProcessHost::OnChannelConnected: ";
113  // Set environment variable to let breakpad know that metro process was
114  // connected.
115  ::SetEnvironmentVariableA(env_vars::kMetroConnected, "1");
116
117  if (!content::GpuDataManager::GetInstance()->GpuAccessAllowed(NULL)) {
118    DVLOG(1) << "No GPU access, attempting to restart in Desktop\n";
119    chrome::AttemptRestartToDesktopMode();
120  }
121}
122
123void ChromeMetroViewerProcessHost::OnSetTargetSurface(
124    gfx::NativeViewId target_surface,
125    float device_scale) {
126  HWND hwnd = reinterpret_cast<HWND>(target_surface);
127
128  gfx::InitDeviceScaleFactor(device_scale);
129  chrome::OpenAsh(hwnd);
130  DCHECK(aura::RemoteWindowTreeHostWin::Instance());
131  DCHECK_EQ(hwnd, aura::RemoteWindowTreeHostWin::Instance()->remote_window());
132  ash::Shell::GetInstance()->CreateShelf();
133  ash::Shell::GetInstance()->ShowShelf();
134
135  // Tell our root window host that the viewer has connected.
136  aura::RemoteWindowTreeHostWin::Instance()->Connected(this);
137
138  // On Windows 8 ASH we default to SHOW_STATE_MAXIMIZED for the browser
139  // window. This is to ensure that we honor metro app conventions by default.
140  ash::WindowPositioner::SetMaximizeFirstWindow(true);
141  // Tell the rest of Chrome that Ash is running.
142  content::NotificationService::current()->Notify(
143      chrome::NOTIFICATION_ASH_SESSION_STARTED,
144      content::NotificationService::AllSources(),
145      content::NotificationService::NoDetails());
146}
147
148void ChromeMetroViewerProcessHost::OnOpenURL(const base::string16& url) {
149  OpenURL(GURL(url));
150}
151
152void ChromeMetroViewerProcessHost::OnHandleSearchRequest(
153    const base::string16& search_string) {
154  GURL url(GetDefaultSearchURLForSearchTerms(
155      TemplateURLServiceFactory::GetForProfile(
156          ProfileManager::GetActiveUserProfile()), search_string));
157  if (url.is_valid())
158    OpenURL(url);
159}
160
161void ChromeMetroViewerProcessHost::OnWindowSizeChanged(uint32 width,
162                                                       uint32 height) {
163  std::vector<ash::DisplayInfo> info_list;
164  info_list.push_back(ash::DisplayInfo::CreateFromSpec(
165      base::StringPrintf("%dx%d*%f", width, height, gfx::GetDPIScale())));
166  ash::Shell::GetInstance()->display_manager()->OnNativeDisplaysChanged(
167      info_list);
168  aura::RemoteWindowTreeHostWin::Instance()->HandleWindowSizeChanged(width,
169                                                                     height);
170}
171