New accessibility virtual keyboard behavior in non-sticky mode.

ui/keyboard/keyboard_ui.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/keyboard/keyboard_ui.h"
 
+#include "base/command_line.h"
 #include "ui/aura/window.h"
 #include "ui/base/ime/input_method.h"
 #include "ui/base/ime/text_input_client.h"
+#include "ui/base/ui_base_switches.h"
 #include "ui/keyboard/keyboard_controller.h"
 
 namespace keyboard {
 
 KeyboardUI::KeyboardUI() : keyboard_controller_(nullptr) {}
 KeyboardUI::~KeyboardUI() {}
 
 void KeyboardUI::ShowKeyboardContainer(aura::Window* container) {
   if (HasKeyboardWindow()) {
     GetKeyboardWindow()->Show();
     container->Show();
   }
 }
 
 void KeyboardUI::HideKeyboardContainer(aura::Window* container) {
   if (HasKeyboardWindow()) {
     container->Hide();
     GetKeyboardWindow()->Hide();
   }
 }
 
 void KeyboardUI::EnsureCaretInWorkArea() {
-  if (GetInputMethod()->GetTextInputClient()) {
+  if (GetInputMethod()) {
     aura::Window* keyboard_window = GetKeyboardWindow();
     aura::Window* root_window = keyboard_window->GetRootWindow();
     gfx::Rect available_bounds = root_window->bounds();
     gfx::Rect keyboard_bounds = keyboard_window->bounds();
-    available_bounds.set_height(available_bounds.height() -
-        keyboard_bounds.height());
-    GetInputMethod()->GetTextInputClient()->EnsureCaretInRect(available_bounds);
+
+    // Only use new virtual keyboard behavior if flag enabled and in non-sticky
+    // mode.
+    bool new_vk_behavior =
+        (base::CommandLine::ForCurrentProcess()->HasSwitch(
+             ::switches::kUseNewVKWindowBehavior) &&
+         !keyboard::KeyboardController::GetInstance()->get_lock_keyboard());
+
+    if (new_vk_behavior) {
+      // Inform InputMethod of new available screen bounds
+      if (keyboard_controller_->keyboard_visible())
+        available_bounds.set_height(available_bounds.height() -
+                                    keyboard_bounds.height());
+      GetInputMethod()->SetAvailableBounds(available_bounds);
+    } else if (GetInputMethod()->GetTextInputClient()) {
+      available_bounds.set_height(available_bounds.height() -
+                                  keyboard_bounds.height());
+      GetInputMethod()->GetTextInputClient()->EnsureCaretInRect(
+          available_bounds);
+    }
   }
 }
 
 void KeyboardUI::SetController(KeyboardController* controller) {
   keyboard_controller_ = controller;
 }
 
 }  // namespace keyboard