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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/ui/ash/ash_init.h"
      6 
      7 #include "ash/accelerators/accelerator_controller.h"
      8 #include "ash/accelerometer/accelerometer_controller.h"
      9 #include "ash/ash_switches.h"
     10 #include "ash/high_contrast/high_contrast_controller.h"
     11 #include "ash/magnifier/magnification_controller.h"
     12 #include "ash/magnifier/partial_magnification_controller.h"
     13 #include "ash/shell.h"
     14 #include "ash/shell_init_params.h"
     15 #include "base/command_line.h"
     16 #include "chrome/browser/browser_shutdown.h"
     17 #include "chrome/browser/lifetime/application_lifetime.h"
     18 #include "chrome/browser/ui/ash/chrome_shell_delegate.h"
     19 #include "chrome/browser/ui/ash/screenshot_taker.h"
     20 #include "chrome/common/chrome_switches.h"
     21 #include "content/public/browser/browser_thread.h"
     22 #include "content/public/browser/context_factory.h"
     23 #include "ui/aura/env.h"
     24 #include "ui/aura/window_tree_host.h"
     25 
     26 #if defined(OS_CHROMEOS)
     27 #include "base/sys_info.h"
     28 #include "chrome/browser/chromeos/accessibility/accessibility_manager.h"
     29 #include "chrome/browser/chromeos/accessibility/magnification_manager.h"
     30 #include "chrome/browser/ui/ash/ime_controller_chromeos.h"
     31 #include "chrome/browser/ui/ash/volume_controller_chromeos.h"
     32 #include "chromeos/chromeos_switches.h"
     33 #include "chromeos/login/login_state.h"
     34 #include "ui/base/x/x11_util.h"
     35 #endif
     36 
     37 namespace chrome {
     38 
     39 bool ShouldOpenAshOnStartup() {
     40 #if defined(OS_CHROMEOS)
     41   return true;
     42 #endif
     43   // TODO(scottmg): http://crbug.com/133312, will need this for Win8 too.
     44   return CommandLine::ForCurrentProcess()->HasSwitch(switches::kOpenAsh);
     45 }
     46 
     47 void OpenAsh(gfx::AcceleratedWidget remote_window) {
     48 #if defined(OS_CHROMEOS)
     49 #if defined(USE_X11)
     50   if (base::SysInfo::IsRunningOnChromeOS()) {
     51     // Hides the cursor outside of the Aura root window. The cursor will be
     52     // drawn within the Aura root window, and it'll remain hidden after the
     53     // Aura window is closed.
     54     ui::HideHostCursor();
     55   }
     56 #endif
     57 
     58   // Hide the mouse cursor completely at boot.
     59   if (!chromeos::LoginState::Get()->IsUserLoggedIn())
     60     ash::Shell::set_initially_hide_cursor(true);
     61 #endif
     62 
     63   ash::ShellInitParams shell_init_params;
     64   // Shell takes ownership of ChromeShellDelegate.
     65   shell_init_params.delegate = new ChromeShellDelegate;
     66   shell_init_params.context_factory = content::GetContextFactory();
     67 #if defined(OS_WIN)
     68   shell_init_params.remote_hwnd = remote_window;
     69 #endif
     70 
     71   ash::Shell* shell = ash::Shell::CreateInstance(shell_init_params);
     72   shell->accelerator_controller()->SetScreenshotDelegate(
     73       scoped_ptr<ash::ScreenshotDelegate>(new ScreenshotTaker).Pass());
     74   // TODO(flackr): Investigate exposing a blocking pool task runner to chromeos.
     75   shell->accelerometer_controller()->Initialize(
     76       content::BrowserThread::GetBlockingPool()->
     77           GetTaskRunnerWithShutdownBehavior(
     78               base::SequencedWorkerPool::SKIP_ON_SHUTDOWN));
     79 #if defined(OS_CHROMEOS)
     80   shell->accelerator_controller()->SetImeControlDelegate(
     81       scoped_ptr<ash::ImeControlDelegate>(new ImeController).Pass());
     82   shell->high_contrast_controller()->SetEnabled(
     83       chromeos::AccessibilityManager::Get()->IsHighContrastEnabled());
     84 
     85   DCHECK(chromeos::MagnificationManager::Get());
     86   bool magnifier_enabled =
     87       chromeos::MagnificationManager::Get()->IsMagnifierEnabled();
     88   ash::MagnifierType magnifier_type =
     89       chromeos::MagnificationManager::Get()->GetMagnifierType();
     90   shell->magnification_controller()->
     91       SetEnabled(magnifier_enabled && magnifier_type == ash::MAGNIFIER_FULL);
     92   shell->partial_magnification_controller()->
     93       SetEnabled(magnifier_enabled && magnifier_type == ash::MAGNIFIER_PARTIAL);
     94 
     95   if (!CommandLine::ForCurrentProcess()->HasSwitch(
     96       switches::kDisableZeroBrowsersOpenForTests)) {
     97     chrome::IncrementKeepAliveCount();
     98   }
     99 #endif
    100   ash::Shell::GetPrimaryRootWindow()->GetHost()->Show();
    101 }
    102 
    103 void CloseAsh() {
    104   if (ash::Shell::HasInstance())
    105     ash::Shell::DeleteInstance();
    106 }
    107 
    108 }  // namespace chrome
    109