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      1 // Copyright 2013 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 "ash/display/virtual_keyboard_window_controller.h"
      6 
      7 #include "ash/display/display_controller.h"
      8 #include "ash/display/display_info.h"
      9 #include "ash/display/display_manager.h"
     10 #include "ash/display/root_window_transformers.h"
     11 #include "ash/host/ash_window_tree_host.h"
     12 #include "ash/host/ash_window_tree_host_init_params.h"
     13 #include "ash/host/root_window_transformer.h"
     14 #include "ash/root_window_controller.h"
     15 #include "ash/root_window_settings.h"
     16 #include "ash/shell.h"
     17 #include "ash/shell_window_ids.h"
     18 #include "base/strings/stringprintf.h"
     19 #include "base/strings/utf_string_conversions.h"
     20 #include "ui/aura/env.h"
     21 #include "ui/aura/window_event_dispatcher.h"
     22 #include "ui/keyboard/keyboard_controller.h"
     23 #include "ui/keyboard/keyboard_util.h"
     24 
     25 namespace ash {
     26 
     27 VirtualKeyboardWindowController::VirtualKeyboardWindowController() {
     28   Shell::GetInstance()->AddShellObserver(this);
     29 }
     30 
     31 VirtualKeyboardWindowController::~VirtualKeyboardWindowController() {
     32   Shell::GetInstance()->RemoveShellObserver(this);
     33   // Make sure the root window gets deleted before cursor_window_delegate.
     34   Close();
     35 }
     36 
     37 void VirtualKeyboardWindowController::ActivateKeyboard(
     38     keyboard::KeyboardController* keyboard_controller) {
     39   root_window_controller_->ActivateKeyboard(keyboard_controller);
     40 }
     41 
     42 void VirtualKeyboardWindowController::UpdateWindow(
     43     const DisplayInfo& display_info) {
     44   static int virtual_keyboard_host_count = 0;
     45   if (!root_window_controller_.get()) {
     46     AshWindowTreeHostInitParams init_params;
     47     init_params.initial_bounds = display_info.bounds_in_native();
     48     AshWindowTreeHost* ash_host = AshWindowTreeHost::Create(init_params);
     49     aura::WindowTreeHost* host = ash_host->AsWindowTreeHost();
     50 
     51     host->window()->SetName(base::StringPrintf("VirtualKeyboardRootWindow-%d",
     52                                                virtual_keyboard_host_count++));
     53 
     54     // No need to remove WindowTreeHostObserver because the DisplayController
     55     // outlives the host.
     56     host->AddObserver(Shell::GetInstance()->display_controller());
     57     InitRootWindowSettings(host->window())->display_id = display_info.id();
     58     host->InitHost();
     59     RootWindowController::CreateForVirtualKeyboardDisplay(ash_host);
     60     root_window_controller_.reset(GetRootWindowController(host->window()));
     61     root_window_controller_->GetHost()->Show();
     62     root_window_controller_->ActivateKeyboard(
     63         keyboard::KeyboardController::GetInstance());
     64     FlipDisplay();
     65   } else {
     66     aura::WindowTreeHost* host = root_window_controller_->GetHost();
     67     GetRootWindowSettings(host->window())->display_id = display_info.id();
     68     host->SetBounds(display_info.bounds_in_native());
     69   }
     70 }
     71 
     72 void VirtualKeyboardWindowController::Close() {
     73   if (root_window_controller_.get()) {
     74     root_window_controller_->GetHost()->RemoveObserver(
     75         Shell::GetInstance()->display_controller());
     76     root_window_controller_->Shutdown();
     77     root_window_controller_.reset();
     78   }
     79 }
     80 
     81 void VirtualKeyboardWindowController::FlipDisplay() {
     82   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
     83   if (!display_manager->virtual_keyboard_root_window_enabled()) {
     84     NOTREACHED() << "Attempting to flip virtual keyboard root window when it "
     85                  << "is not enabled.";
     86     return;
     87   }
     88   display_manager->SetDisplayRotation(
     89       display_manager->non_desktop_display().id(), gfx::Display::ROTATE_180);
     90 
     91   aura::WindowTreeHost* host = root_window_controller_->GetHost();
     92   scoped_ptr<RootWindowTransformer> transformer(
     93       CreateRootWindowTransformerForDisplay(
     94           host->window(), display_manager->non_desktop_display()));
     95   root_window_controller_->ash_host()->SetRootWindowTransformer(
     96       transformer.Pass());
     97 }
     98 
     99 void VirtualKeyboardWindowController::OnMaximizeModeStarted() {
    100   keyboard::SetTouchKeyboardEnabled(true);
    101   Shell::GetInstance()->CreateKeyboard();
    102 }
    103 
    104 void VirtualKeyboardWindowController::OnMaximizeModeEnded() {
    105   keyboard::SetTouchKeyboardEnabled(false);
    106   if (!keyboard::IsKeyboardEnabled())
    107     Shell::GetInstance()->DeactivateKeyboard();
    108 }
    109 
    110 }  // namespace ash
    111