Create and show the virtual keyboard.

ui/keyboard/keyboard_controller.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 "ui/aura/layout_manager.h"
+#include "ui/aura/window.h"
+#include "ui/gfx/rect.h"
+#include "ui/keyboard/keyboard_controller_proxy.h"
+
+namespace {
+
+// LayoutManager for the virtual keyboard container.  Manages a single window
+// (the virtual keyboard) and keeps it positioned at the bottom of the
+// container window.
+class KeyboardLayoutManager : public aura::LayoutManager {
+ public:
+  KeyboardLayoutManager(aura::Window* owner, aura::Window* keyboard)
+    : owner_(owner), keyboard_(keyboard) {}
+
+  // Overridden from aura::LayoutManager
+  virtual void OnWindowResized() OVERRIDE {
+    gfx::Rect owner_bounds = owner_->bounds();
+    gfx::Rect keyboard_bounds = gfx::Rect(
+        owner_bounds.x(),
+        owner_bounds.y() + owner_bounds.height() * 0.7,
+        owner_bounds.width(),
+        owner_bounds.height() * 0.3);
+    SetChildBoundsDirect(keyboard_, keyboard_bounds);
+  }
+  virtual void OnWindowAddedToLayout(aura::Window* child) OVERRIDE {
+    CHECK(child == keyboard_);
+  }
+  virtual void OnWillRemoveWindowFromLayout(aura::Window* child) OVERRIDE {}
+  virtual void OnWindowRemovedFromLayout(aura::Window* child) OVERRIDE {}
+  virtual void OnChildWindowVisibilityChanged(aura::Window* child,
+                                              bool visible) OVERRIDE {}
+  virtual void SetChildBounds(aura::Window* child,
+                              const gfx::Rect& requested_bounds) OVERRIDE {
+    // Drop these: the size should only be set in OnWindowResized.
+  }
+
+ private:
+  aura::Window* owner_;
+  aura::Window* keyboard_;
+
+  DISALLOW_COPY_AND_ASSIGN(KeyboardLayoutManager);
+};
+
+}  // namespace
+
+namespace keyboard {
+
+KeyboardController::KeyboardController(KeyboardControllerProxy* proxy)
+    : proxy_(proxy), container_(NULL) {
+  CHECK(proxy);
+}
+
+KeyboardController::~KeyboardController() {}
+
+aura::Window* KeyboardController::GetContainerWindow() {
+  if (!container_) {
+    container_ = new aura::Window(NULL);
+    container_->SetName("KeyboardContainer");
+    container_->Init(ui::LAYER_NOT_DRAWN);
+
+    aura::Window* keyboard = proxy_->GetKeyboardWindow();
+    keyboard->Show();
+
+    container_->SetLayoutManager(
+        new KeyboardLayoutManager(container_, keyboard));
+    container_->AddChild(keyboard);
+  }
+  return container_;
+}
+
+}  // namespace keyboard