aura: Allow creating content_shell without views.

content/shell/browser/shell_aura.cc

 // Copyright 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 "content/shell/browser/shell.h"
 
-#include "base/command_line.h"
-#include "base/strings/utf_string_conversions.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_view.h"
+#include "ui/aura/client/aura_constants.h"
+#include "ui/aura/client/default_activation_client.h"
+#include "ui/aura/client/default_capture_client.h"
 #include "ui/aura/env.h"
+#include "ui/aura/focus_manager.h"
+#include "ui/aura/layout_manager.h"
 #include "ui/aura/root_window.h"
+#include "ui/aura/test/test_screen.h"
 #include "ui/aura/window.h"
-#include "ui/base/accessibility/accessibility_types.h"
-#include "ui/base/clipboard/clipboard.h"
-#include "ui/base/resource/resource_bundle.h"
-#include "ui/events/event.h"
+#include "ui/base/ime/input_method.h"
+#include "ui/base/ime/input_method_delegate.h"
+#include "ui/base/ime/input_method_factory.h"
 #include "ui/gfx/screen.h"
-#include "ui/views/controls/button/label_button.h"
-#include "ui/views/controls/textfield/textfield.h"
-#include "ui/views/controls/textfield/textfield_controller.h"
-#include "ui/views/controls/webview/webview.h"
-#include "ui/views/layout/fill_layout.h"
-#include "ui/views/layout/grid_layout.h"
-#include "ui/views/test/desktop_test_views_delegate.h"
-#include "ui/views/view.h"
-#include "ui/views/widget/desktop_aura/desktop_screen.h"
-#include "ui/views/widget/widget.h"
-#include "ui/views/widget/widget_delegate.h"
-
-#if defined(OS_CHROMEOS)
-#include "chromeos/dbus/dbus_thread_manager.h"
-#include "ui/aura/test/test_screen.h"
-#include "ui/shell/minimal_shell.h"
-#endif
-
-#if defined(OS_WIN)
-#include <fcntl.h>
-#include <io.h>
-#endif
 
 namespace content {
 
 namespace {
-// ViewDelegate implementation for aura content shell
-class ShellViewsDelegateAura : public views::DesktopTestViewsDelegate {
+
+class FillLayout : public aura::LayoutManager {
  public:
-  ShellViewsDelegateAura() : use_transparent_windows_(false) {
+  explicit FillLayout(aura::RootWindow* root)
+      : root_(root) {
   }
 
-  virtual ~ShellViewsDelegateAura() {
+  virtual ~FillLayout() {}
+
+ private:
+  // aura::LayoutManager:
+  virtual void OnWindowResized() OVERRIDE {
   }
 
-  void SetUseTransparentWindows(bool transparent) {
-    use_transparent_windows_ = transparent;
+  virtual void OnWindowAddedToLayout(aura::Window* child) OVERRIDE {
+    child->SetBounds(gfx::Rect(root_->GetHostSize()));
   }
 
-  // Overridden from views::TestViewsDelegate:
-  virtual bool UseTransparentWindows() const OVERRIDE {
-    return use_transparent_windows_;
+  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 {
+    SetChildBoundsDirect(child, requested_bounds);
+  }
+
+  aura::RootWindow* root_;
+
+  DISALLOW_COPY_AND_ASSIGN(FillLayout);
+};
+
+// This is essentially corewm::InputEventFilter.
+class YetAnotherInputMethod : public ui::internal::InputMethodDelegate,
+                              public ui::EventHandler {
+ public:
+  explicit YetAnotherInputMethod(aura::RootWindow* root)
+      : root_(root),
+        input_method_(ui::CreateInputMethod(this, NULL)) {
+    input_method_->Init(true);
+    root_->AddPreTargetHandler(this);
+    root_->SetProperty(aura::client::kRootWindowInputMethodKey,
+                       input_method_.get());
+  }
+
+  virtual ~YetAnotherInputMethod() {
+    root_->RemovePreTargetHandler(this);
+    root_->SetProperty(aura::client::kRootWindowInputMethodKey,
+                       static_cast<ui::InputMethod*>(NULL));
   }
 
  private:
-  bool use_transparent_windows_;
-
-  DISALLOW_COPY_AND_ASSIGN(ShellViewsDelegateAura);
-};
-
-// Maintain the UI controls and web view for content shell
-class ShellWindowDelegateView : public views::WidgetDelegateView,
-                                public views::TextfieldController,
-                                public views::ButtonListener {
- public:
-  enum UIControl {
-    BACK_BUTTON,
-    FORWARD_BUTTON,
-    STOP_BUTTON
-  };
-
-  ShellWindowDelegateView(Shell* shell)
-    : shell_(shell),
-      toolbar_view_(new View),
-      contents_view_(new View) {
-  }
-  virtual ~ShellWindowDelegateView() {}
-
-  // Update the state of UI controls
-  void SetAddressBarURL(const GURL& url) {
-    url_entry_->SetText(ASCIIToUTF16(url.spec()));
-  }
-  void SetWebContents(WebContents* web_contents) {
-    contents_view_->SetLayoutManager(new views::FillLayout());
-    web_view_ = new views::WebView(web_contents->GetBrowserContext());
-    web_view_->SetWebContents(web_contents);
-    web_contents->GetView()->Focus();
-    contents_view_->AddChildView(web_view_);
-    Layout();
-  }
-  void SetWindowTitle(const string16& title) { title_ = title; }
-  void EnableUIControl(UIControl control, bool is_enabled) {
-    if (control == BACK_BUTTON) {
-      back_button_->SetState(is_enabled ? views::CustomButton::STATE_NORMAL
-          : views::CustomButton::STATE_DISABLED);
-    } else if (control == FORWARD_BUTTON) {
-      forward_button_->SetState(is_enabled ? views::CustomButton::STATE_NORMAL
-          : views::CustomButton::STATE_DISABLED);
-    } else if (control == STOP_BUTTON) {
-      stop_button_->SetState(is_enabled ? views::CustomButton::STATE_NORMAL
-          : views::CustomButton::STATE_DISABLED);
+  // ui::EventHandler:
+  virtual void OnKeyEvent(ui::KeyEvent* event) OVERRIDE {
+    const ui::EventType type = event->type();
+    if (type == ui::ET_TRANSLATED_KEY_PRESS ||
+        type == ui::ET_TRANSLATED_KEY_RELEASE) {
+      // The |event| is already handled by this object, change the type of the
+      // event to ui::ET_KEY_* and pass it to the next filter.
+      static_cast<ui::TranslatedKeyEvent*>(event)->ConvertToKeyEvent();
+    } else {
+      bool handled = false;
+      if (event->HasNativeEvent())
+        handled = input_method_->DispatchKeyEvent(event->native_event());
+      else
+        handled = input_method_->DispatchFabricatedKeyEvent(*event);
+      if (handled)
+        event->StopPropagation();
     }
   }
 
- private:
-  // Initialize the UI control contained in shell window
-  void InitShellWindow() {
-    set_background(views::Background::CreateStandardPanelBackground());
-
-    views::GridLayout* layout = new views::GridLayout(this);
-    SetLayoutManager(layout);
-
-    views::ColumnSet* column_set = layout->AddColumnSet(0);
-    column_set->AddPaddingColumn(0, 2);
-    column_set->AddColumn(views::GridLayout::FILL, views::GridLayout::FILL, 1,
-                          views::GridLayout::USE_PREF, 0, 0);
-    column_set->AddPaddingColumn(0, 2);
-
-    layout->AddPaddingRow(0, 2);
-
-    // Add toolbar buttons and URL text field
-    {
-      layout->StartRow(0, 0);
-      views::GridLayout* toolbar_layout = new views::GridLayout(toolbar_view_);
-      toolbar_view_->SetLayoutManager(toolbar_layout);
-
-      views::ColumnSet* toolbar_column_set =
-          toolbar_layout->AddColumnSet(0);
-      // Back button
-      back_button_ = new views::LabelButton(this, ASCIIToUTF16("Back"));
-      back_button_->SetStyle(views::Button::STYLE_NATIVE_TEXTBUTTON);
-      gfx::Size back_button_size = back_button_->GetPreferredSize();
-      toolbar_column_set->AddColumn(views::GridLayout::CENTER,
-                                    views::GridLayout::CENTER, 0,
-                                    views::GridLayout::FIXED,
-                                    back_button_size.width(),
-                                    back_button_size.width() / 2);
-      // Forward button
-      forward_button_ = new views::LabelButton(this, ASCIIToUTF16("Forward"));
-      forward_button_->SetStyle(views::Button::STYLE_NATIVE_TEXTBUTTON);
-      gfx::Size forward_button_size = forward_button_->GetPreferredSize();
-      toolbar_column_set->AddColumn(views::GridLayout::CENTER,
-                                    views::GridLayout::CENTER, 0,
-                                    views::GridLayout::FIXED,
-                                    forward_button_size.width(),
-                                    forward_button_size.width() / 2);
-      // Refresh button
-      refresh_button_ = new views::LabelButton(this, ASCIIToUTF16("Refresh"));
-      refresh_button_->SetStyle(views::Button::STYLE_NATIVE_TEXTBUTTON);
-      gfx::Size refresh_button_size = refresh_button_->GetPreferredSize();
-      toolbar_column_set->AddColumn(views::GridLayout::CENTER,
-                                    views::GridLayout::CENTER, 0,
-                                    views::GridLayout::FIXED,
-                                    refresh_button_size.width(),
-                                    refresh_button_size.width() / 2);
-      // Stop button
-      stop_button_ = new views::LabelButton(this, ASCIIToUTF16("Stop"));
-      stop_button_->SetStyle(views::Button::STYLE_NATIVE_TEXTBUTTON);
-      gfx::Size stop_button_size = stop_button_->GetPreferredSize();
-      toolbar_column_set->AddColumn(views::GridLayout::CENTER,
-                                    views::GridLayout::CENTER, 0,
-                                    views::GridLayout::FIXED,
-                                    stop_button_size.width(),
-                                    stop_button_size.width() / 2);
-      toolbar_column_set->AddPaddingColumn(0, 2);
-      // URL entry
-      url_entry_ = new views::Textfield();
-      url_entry_->SetController(this);
-      toolbar_column_set->AddColumn(views::GridLayout::FILL,
-                                    views::GridLayout::FILL, 1,
-                                    views::GridLayout::USE_PREF, 0, 0);
-
-      // Fill up the first row
-      toolbar_layout->StartRow(0, 0);
-      toolbar_layout->AddView(back_button_);
-      toolbar_layout->AddView(forward_button_);
-      toolbar_layout->AddView(refresh_button_);
-      toolbar_layout->AddView(stop_button_);
-      toolbar_layout->AddView(url_entry_);
-
-      layout->AddView(toolbar_view_);
-    }
-
-    layout->AddPaddingRow(0, 5);
-
-    // Add web contents view as the second row
-    {
-      layout->StartRow(1, 0);
-      layout->AddView(contents_view_);
-    }
-
-    layout->AddPaddingRow(0, 5);
-  }
-  // Overridden from TextfieldController
-  virtual void ContentsChanged(views::Textfield* sender,
-                               const string16& new_contents) OVERRIDE {
-  }
-  virtual bool HandleKeyEvent(views::Textfield* sender,
-                              const ui::KeyEvent& key_event) OVERRIDE {
-   if (sender == url_entry_ && key_event.key_code() == ui::VKEY_RETURN) {
-     std::string text = UTF16ToUTF8(url_entry_->text());
-     GURL url(text);
-     if (!url.has_scheme()) {
-       url = GURL(std::string("http://") + std::string(text));
-       url_entry_->SetText(ASCIIToUTF16(url.spec()));
-     }
-     shell_->LoadURL(url);
-     return true;
-   }
-   return false;
+  // ui::InputMethodDelegate:
+  virtual bool DispatchKeyEventPostIME(
+      const base::NativeEvent& event) OVERRIDE {
+    ui::TranslatedKeyEvent aura_event(event, false /* is_char */);
+    return root_->AsRootWindowHostDelegate()->OnHostKeyEvent(
+        &aura_event);
   }
 
-  // Overridden from ButtonListener
-  virtual void ButtonPressed(views::Button* sender,
-                             const ui::Event& event) OVERRIDE {
-    if (sender == back_button_)
-      shell_->GoBackOrForward(-1);
-    else if (sender == forward_button_)
-      shell_->GoBackOrForward(1);
-    else if (sender == refresh_button_)
-      shell_->Reload();
-    else if (sender == stop_button_)
-      shell_->Stop();
+  virtual bool DispatchFabricatedKeyEventPostIME(ui::EventType type,
+                                                 ui::KeyboardCode key_code,
+                                                 int flags) OVERRIDE {
+    ui::TranslatedKeyEvent aura_event(type == ui::ET_KEY_PRESSED, key_code,
+                                      flags);
+    return root_->AsRootWindowHostDelegate()->OnHostKeyEvent(
+        &aura_event);
   }
 
-  // Overridden from WidgetDelegateView
-  virtual bool CanResize() const OVERRIDE { return true; }
-  virtual bool CanMaximize() const OVERRIDE { return true; }
-  virtual string16 GetWindowTitle() const OVERRIDE {
-    return title_;
-  }
-  virtual void WindowClosing() OVERRIDE {
-    if (shell_) {
-      delete shell_;
-      shell_ = NULL;
-    }
-  }
-  virtual View* GetContentsView() OVERRIDE { return this; }
+  aura::RootWindow* root_;
+  scoped_ptr<ui::InputMethod> input_method_;
 
-  // Overridden from View
-  virtual void ViewHierarchyChanged(
-      const ViewHierarchyChangedDetails& details) OVERRIDE {
-    if (details.is_add && details.child == this) {
-      InitShellWindow();
-    }
-  }
-
- private:
-  // Hold a reference of Shell for deleting it when the window is closing
-  Shell* shell_;
-
-  // Window title
-  string16 title_;
-
-  // Toolbar view contains forward/backward/reload button and URL entry
-  View* toolbar_view_;
-  views::LabelButton* back_button_;
-  views::LabelButton* forward_button_;
-  views::LabelButton* refresh_button_;
-  views::LabelButton* stop_button_;
-  views::Textfield* url_entry_;
-
-  // Contents view contains the web contents view
-  View* contents_view_;
-  views::WebView* web_view_;
-
-  DISALLOW_COPY_AND_ASSIGN(ShellWindowDelegateView);
+  DISALLOW_COPY_AND_ASSIGN(YetAnotherInputMethod);
 };
 
-}  // namespace
+}
 
-#if defined(OS_CHROMEOS)
-shell::MinimalShell* Shell::minimal_shell_ = NULL;
-#endif
-views::ViewsDelegate* Shell::views_delegate_ = NULL;
+scoped_ptr<aura::RootWindow> Shell::root_window_;
 
 // static
 void Shell::PlatformInitialize(const gfx::Size& default_window_size) {
-#if defined(OS_WIN)
-  _setmode(_fileno(stdout), _O_BINARY);
-  _setmode(_fileno(stderr), _O_BINARY);
-#endif
-#if defined(OS_CHROMEOS)
-  chromeos::DBusThreadManager::Initialize();
-  gfx::Screen::SetScreenInstance(
-      gfx::SCREEN_TYPE_NATIVE, aura::TestScreen::Create());
-  minimal_shell_ = new shell::MinimalShell(default_window_size);
-#else
-  gfx::Screen::SetScreenInstance(
-      gfx::SCREEN_TYPE_NATIVE, views::CreateDesktopScreen());
-#endif
-  views_delegate_ = new ShellViewsDelegateAura();
+  aura::Env::CreateInstance();
 }
 
 void Shell::PlatformExit() {

[James Cook, 2013/10/17 17:18:37]

Should this clean up root_window_?

I think in the other version MinimalShell owns the RootWindow and is deleted
here.

-  std::vector<Shell*> windows = windows_;
-  for (std::vector<Shell*>::iterator it = windows.begin();
-       it != windows.end(); ++it) {
-    (*it)->window_widget_->Close();
-  }
-#if defined(OS_CHROMEOS)
-  if (minimal_shell_)
-    delete minimal_shell_;
-#endif
-  if (views_delegate_)
-    delete views_delegate_;
-#if defined(OS_CHROMEOS)
-  chromeos::DBusThreadManager::Shutdown();
-#endif
   aura::Env::DeleteInstance();
 }
 
 void Shell::PlatformCleanUp() {
 }
 
 void Shell::PlatformEnableUIControl(UIControl control, bool is_enabled) {
-  ShellWindowDelegateView* delegate_view =
-    static_cast<ShellWindowDelegateView*>(window_widget_->widget_delegate());
-  if (control == BACK_BUTTON) {
-    delegate_view->EnableUIControl(ShellWindowDelegateView::BACK_BUTTON,
-        is_enabled);
-  } else if (control == FORWARD_BUTTON) {
-    delegate_view->EnableUIControl(ShellWindowDelegateView::FORWARD_BUTTON,
-        is_enabled);
-  } else if (control == STOP_BUTTON) {
-    delegate_view->EnableUIControl(ShellWindowDelegateView::STOP_BUTTON,
-        is_enabled);
-  }
 }
 
 void Shell::PlatformSetAddressBarURL(const GURL& url) {
-  ShellWindowDelegateView* delegate_view =
-    static_cast<ShellWindowDelegateView*>(window_widget_->widget_delegate());
-  delegate_view->SetAddressBarURL(url);
 }
 
 void Shell::PlatformSetIsLoading(bool loading) {
 }
 
 void Shell::PlatformCreateWindow(int width, int height) {
-#if defined(OS_CHROMEOS)
-  window_widget_ =
-      views::Widget::CreateWindowWithContextAndBounds(
-          new ShellWindowDelegateView(this),
-          minimal_shell_->GetDefaultParent(NULL, NULL, gfx::Rect()),
-          gfx::Rect(0, 0, width, height));
-#else
-  window_widget_ =
-      views::Widget::CreateWindowWithBounds(new ShellWindowDelegateView(this),
-               gfx::Rect(0, 0, width, height));
-#endif
+  aura::TestScreen* screen = aura::TestScreen::Create();
+  gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE, screen);
+  root_window_.reset(screen->CreateRootWindowForPrimaryDisplay());
+  root_window_->SetHostSize(gfx::Size(width, height));
+  root_window_->ShowRootWindow();
+  root_window_->SetLayoutManager(new FillLayout(root_window_.get()));
 
-  window_ = window_widget_->GetNativeWindow();
-  // Call ShowRootWindow on RootWindow created by MinimalShell without
-  // which XWindow owned by RootWindow doesn't get mapped.
-  window_->GetRootWindow()->ShowRootWindow();
-  window_widget_->Show();
+  // Lots of leak below.
+  aura::client::SetFocusClient(root_window_.get(), new aura::FocusManager());

[Daniel Erat, 2013/10/17 14:41:19]

is there a reason not to make these be members of Shell?

+  new aura::client::DefaultActivationClient(root_window_.get());
+  new aura::client::DefaultCaptureClient(root_window_.get());
+  new YetAnotherInputMethod(root_window_.get());
 }
 
 void Shell::PlatformSetContents() {
-  ShellWindowDelegateView* delegate_view =
-    static_cast<ShellWindowDelegateView*>(window_widget_->widget_delegate());
-  delegate_view->SetWebContents(web_contents_.get());
+  root_window_->AddChild(web_contents_->GetView()->GetNativeView());
+  web_contents_->GetView()->GetNativeView()->Show();
 }
 
 void Shell::PlatformResizeSubViews() {
 }
 
 void Shell::Close() {
-  window_widget_->CloseNow();
 }
 
 void Shell::PlatformSetTitle(const string16& title) {
-  ShellWindowDelegateView* delegate_view =
-    static_cast<ShellWindowDelegateView*>(window_widget_->widget_delegate());
-  delegate_view->SetWindowTitle(title);
-  window_widget_->UpdateWindowTitle();
 }
 
 }  // namespace content