A keyboard widget that manages itself (the animation and all that).

chrome/browser/ui/touch/keyboard/keyboard_manager.cc

+// Copyright (c) 2011 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 "chrome/browser/ui/touch/keyboard/keyboard_manager.h"
+
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/profiles/profile_manager.h"
+#include "chrome/browser/ui/browser_list.h"
+#include "chrome/browser/ui/views/dom_view.h"
+#include "chrome/common/extensions/extension_messages.h"
+#include "chrome/common/url_constants.h"
+#include "content/browser/site_instance.h"
+#include "content/browser/tab_contents/tab_contents.h"
+#include "ui/base/animation/slide_animation.h"
+#include "ui/gfx/interpolated_transform.h"
+#include "views/widget/widget.h"
+
+namespace {
+
+const int kDefaultKeyboardHeight = 300;
+const int kKeyboardSlideDuration = 300;  // In milliseconds
+
+}  // namespace
+
+// TODO(sad): Is the default profile always going to be the one we want?
+
+KeyboardManager::KeyboardManager()
+    : views::Widget::Widget(),
+      dom_view_(new DOMView),
+      ALLOW_THIS_IN_INITIALIZER_LIST(
+          extension_dispatcher_(ProfileManager::GetDefaultProfile(), this)),
+      target_(NULL) {
+  views::Widget::InitParams params(views::Widget::InitParams::TYPE_POPUP);
+  params.transparent = true;
+  Init(params);
+
+  Profile* profile = ProfileManager::GetDefaultProfile();
+  GURL keyboard_url(chrome::kChromeUIKeyboardURL);
+  dom_view_->Init(profile,
+      SiteInstance::CreateSiteInstanceForURL(profile, keyboard_url));
+  dom_view_->LoadURL(keyboard_url);
+  dom_view_->SetVisible(true);
+
+  SetContentsView(dom_view_);
+
+  Observe(dom_view_->tab_contents());
+
+  animation_.reset(new ui::SlideAnimation(this));
+  animation_->SetTweenType(ui::Tween::LINEAR);
+  animation_->SetSlideDuration(kKeyboardSlideDuration);
+}
+
+KeyboardManager::~KeyboardManager() {
+  // TODO(sad): Do anything?
+}
+
+void KeyboardManager::ShowKeyboardForWidget(views::Widget* widget) {
+  // TODO(sad): There needs to be some way of resetting |target_| if/when it is
+  // destroyed.
+  target_ = widget;
+
+  // TODO(sad): Use the configurable height for the keyboard, instead of always
+  // using the default height.
+  gfx::Rect rect = target_->GetWindowScreenBounds();
+  rect.set_y(rect.height() - kDefaultKeyboardHeight);
+  rect.set_height(kDefaultKeyboardHeight);
+  SetBounds(rect);
+
+  transform_.reset(new ui::InterpolatedTranslation(
+      gfx::Point(0, kDefaultKeyboardHeight), gfx::Point(), 0.0, 1.0));
+

[Ian Vollick, 2011/07/04 20:12:00]

If the UI is rotated on its side, will setting the transform here clobber the
rotation (or is the rotation inherited)? If so, you might want to combine the
translation w/ an InterpolatedConstantTransform (for the old transformation).

Nit: 0.0 - 1.0 is the default, so you should be able to omit the last two
params.

[sadrul, 2011/07/04 20:21:19]

The way orientation will happen, in my mind, is that the transform will not be
set on the individual Widgets' RootViews, but on the very rooty RootView, i.e.
the RootView of the views::DesktopWindow. So setting a transform on individual
Widget's (this one and others) will not conflict with the transform used for the
orientation.
Cool. Done for next revision of the CL.

+  GetRootView()->SetTransform(
+      transform_->Interpolate(animation_->GetCurrentValue()));
+  animation_->Show();
+
+  MoveToTop();
+  Show();
+}
+
+void KeyboardManager::Hide() {
+  animation_->Hide();
+}
+
+bool KeyboardManager::OnKeyEvent(const views::KeyEvent& event) {
+  return target_ ? target_->OnKeyEvent(event) : false;
+}
+
+void KeyboardManager::AnimationProgressed(const ui::Animation* animation) {
+  GetRootView()->SetTransform(
+      transform_->Interpolate(animation_->GetCurrentValue()));
+}
+
+void KeyboardManager::AnimationEnded(const ui::Animation* animation) {
+  if (animation_->GetCurrentValue() < 0.01)
+    Widget::Hide();
+}
+
+bool KeyboardManager::OnMessageReceived(const IPC::Message& message) {
+  bool handled = true;
+  IPC_BEGIN_MESSAGE_MAP(KeyboardManager, message)
+    IPC_MESSAGE_HANDLER(ExtensionHostMsg_Request, OnRequest)
+    IPC_MESSAGE_UNHANDLED(handled = false)
+  IPC_END_MESSAGE_MAP()
+  return handled;
+}
+
+void KeyboardManager::OnRequest(
+    const ExtensionHostMsg_Request_Params& request) {
+  extension_dispatcher_.Dispatch(request,
+      dom_view_->tab_contents()->render_view_host());
+}
+
+Browser* KeyboardManager::GetBrowser() {
+  // TODO(sad): Find a better way. Perhaps just return NULL, and fix
+  // SendKeyboardEventInputFunction::GetTopLevelWidget to somehow interact with
+  // the WM to find the top level widget?
+  return BrowserList::FindTabbedBrowser(
+      ProfileManager::GetDefaultProfile(), true);
+}
+
+gfx::NativeView KeyboardManager::GetNativeViewOfHost() {
+  return dom_view_->native_view();
+}
+
+TabContents* KeyboardManager::GetAssociatedTabContents() const {
+  return dom_view_->tab_contents();
+}
+
+// static
+KeyboardManager* KeyboardManager::GetInstance() {
+  return Singleton<KeyboardManager>::get();
+}