Restore virtual keyboard after switch back to FULL_WIDTH mode

ui/keyboard/keyboard_controller_unittest.cc

 // Copyright (c) 2013 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_controller.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 445 matching lines @@
   SetFocus(&no_input_client);
   base::MessageLoop::current()->Run();
   EXPECT_EQ(gfx::Rect(), notified_bounds());
   EXPECT_EQ(3, number_of_calls());
   SetFocus(&input_client);
   // In FLOATING mode, no overscroll or resize should be triggered.
   EXPECT_EQ(3, number_of_calls());
   EXPECT_EQ(gfx::Rect(), controller()->current_keyboard_bounds());
 }
 
+// Verify switch to FULL_WIDTH mode will move virtual keyboard to the right
+// place and sets the correct overscroll.
+TEST_F(KeyboardControllerTest, SwitchToFullWidthVirtualKeyboard) {
+  ui::DummyTextInputClient input_client(ui::TEXT_INPUT_TYPE_TEXT);
+
+  aura::Window* container(controller()->GetContainerWindow());
+  root_window()->AddChild(container);
+  gfx::Rect screen_bounds = root_window()->bounds();
+  keyboard::SetTouchKeyboardEnabled(true);
+  SetFocus(&input_client);
+
+  controller()->SetKeyboardMode(FLOATING);
+  EXPECT_EQ(gfx::Rect(), notified_bounds());
+  EXPECT_EQ(gfx::Rect(), controller()->current_keyboard_bounds());
+
+  controller()->SetKeyboardMode(FULL_WIDTH);
+  gfx::Rect expected_bounds(
+      0, screen_bounds.height() - kDefaultVirtualKeyboardHeight,
+      screen_bounds.width(), kDefaultVirtualKeyboardHeight);
+  EXPECT_EQ(expected_bounds, notified_bounds());
+  EXPECT_EQ(expected_bounds, controller()->current_keyboard_bounds());
+}
+
 TEST_F(KeyboardControllerTest, AlwaysVisibleWhenLocked) {
   ui::DummyTextInputClient input_client_0(ui::TEXT_INPUT_TYPE_TEXT);
   ui::DummyTextInputClient input_client_1(ui::TEXT_INPUT_TYPE_TEXT);
   ui::DummyTextInputClient no_input_client_0(ui::TEXT_INPUT_TYPE_NONE);
   ui::DummyTextInputClient no_input_client_1(ui::TEXT_INPUT_TYPE_NONE);
 
   aura::Window* keyboard_container(controller()->GetContainerWindow());
   scoped_ptr<KeyboardContainerObserver> keyboard_container_observer(
       new KeyboardContainerObserver(keyboard_container));
   root_window()->AddChild(keyboard_container);
@@ skipping 116 matching lines @@
   // Before hide animation finishes, show keyboard again.
   ShowKeyboard();
   RunAnimationForLayer(layer);
   EXPECT_TRUE(keyboard_container()->IsVisible());
   EXPECT_TRUE(keyboard_window()->IsVisible());
   EXPECT_EQ(1.0, layer->opacity());
   EXPECT_EQ(gfx::Transform(), layer->transform());
 }
 
 }  // namespace keyboard