Split out Ash/Aura parts of ChromeNativeAppWindowViews.

chrome/browser/ui/views/apps/chrome_native_app_window_views_aura.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 "chrome/browser/ui/views/apps/chrome_native_app_window_views_aura.h"
+
+#include "apps/ui/views/app_window_frame_view.h"
+#include "ash/ash_constants.h"
+#include "ash/frame/custom_frame_view_ash.h"
+#include "ash/screen_util.h"
+#include "ash/shell.h"
+#include "ash/wm/immersive_fullscreen_controller.h"
+#include "ash/wm/panels/panel_frame_view.h"
+#include "ash/wm/window_properties.h"
+#include "ash/wm/window_state.h"
+#include "ash/wm/window_state_delegate.h"
+#include "ash/wm/window_state_observer.h"
+#include "chrome/browser/ui/ash/ash_util.h"
+#include "chrome/browser/ui/ash/multi_user/multi_user_context_menu.h"
+#include "chrome/browser/ui/host_desktop.h"
+#include "chrome/browser/ui/views/apps/shaped_app_window_targeter.h"
+#include "chrome/browser/web_applications/web_app.h"
+#include "ui/aura/client/aura_constants.h"
+#include "ui/aura/window.h"
+#include "ui/aura/window_observer.h"
+#include "ui/base/hit_test.h"
+#include "ui/base/models/simple_menu_model.h"
+#include "ui/gfx/image/image_skia.h"
+#include "ui/views/controls/menu/menu_runner.h"
+#include "ui/views/widget/widget.h"
+#include "ui/wm/core/easy_resize_window_targeter.h"
+
+#if defined(OS_CHROMEOS)
+#include "ash/shell_window_ids.h"
+#endif
+
+#if defined(OS_LINUX)
+#include "chrome/browser/shell_integration_linux.h"
+#endif
+
+using extensions::AppWindow;
+
+namespace {
+
+// This class handles a user's fullscreen request (Shift+F4/F4).
+class NativeAppWindowStateDelegate : public ash::wm::WindowStateDelegate,
+                                     public ash::wm::WindowStateObserver,
+                                     public aura::WindowObserver {
+ public:
+  NativeAppWindowStateDelegate(AppWindow* app_window,
+                               extensions::NativeAppWindow* native_app_window)
+      : app_window_(app_window),
+        window_state_(
+            ash::wm::GetWindowState(native_app_window->GetNativeWindow())) {
+    // Add a window state observer to exit fullscreen properly in case
+    // fullscreen is exited without going through AppWindow::Restore(). This
+    // is the case when exiting immersive fullscreen via the "Restore" window
+    // control.
+    // TODO(pkotwicz): This is a hack. Remove ASAP. http://crbug.com/319048
+    window_state_->AddObserver(this);
+    window_state_->window()->AddObserver(this);
+  }
+  ~NativeAppWindowStateDelegate() override {
+    if (window_state_) {
+      window_state_->RemoveObserver(this);
+      window_state_->window()->RemoveObserver(this);
+    }
+  }
+
+ private:
+  // Overridden from ash::wm::WindowStateDelegate.
+  bool ToggleFullscreen(ash::wm::WindowState* window_state) override {
+    // Windows which cannot be maximized should not be fullscreened.
+    DCHECK(window_state->IsFullscreen() || window_state->CanMaximize());
+    if (window_state->IsFullscreen())
+      app_window_->Restore();
+    else if (window_state->CanMaximize())
+      app_window_->OSFullscreen();
+    return true;
+  }
+
+  // Overridden from ash::wm::WindowStateObserver:
+  void OnPostWindowStateTypeChange(ash::wm::WindowState* window_state,
+                                   ash::wm::WindowStateType old_type) override {
+    // Since the window state might get set by a window manager, it is possible
+    // to come here before the application set its |BaseWindow|.
+    if (!window_state->IsFullscreen() && !window_state->IsMinimized() &&
+        app_window_->GetBaseWindow() &&
+        app_window_->GetBaseWindow()->IsFullscreenOrPending()) {
+      app_window_->Restore();
+      // Usually OnNativeWindowChanged() is called when the window bounds are
+      // changed as a result of a state type change. Because the change in state
+      // type has already occurred, we need to call OnNativeWindowChanged()
+      // explicitly.
+      app_window_->OnNativeWindowChanged();
+    }
+  }
+
+  // Overridden from aura::WindowObserver:
+  void OnWindowDestroying(aura::Window* window) override {
+    window_state_->RemoveObserver(this);
+    window_state_->window()->RemoveObserver(this);
+    window_state_ = NULL;
+  }
+
+  // Not owned.
+  AppWindow* app_window_;
+  ash::wm::WindowState* window_state_;
+
+  DISALLOW_COPY_AND_ASSIGN(NativeAppWindowStateDelegate);
+};
+
+}  // namespace
+
+ChromeNativeAppWindowViewsAura::ChromeNativeAppWindowViewsAura() {
+}
+
+ChromeNativeAppWindowViewsAura::~ChromeNativeAppWindowViewsAura() {
+}
+
+void ChromeNativeAppWindowViewsAura::OnBeforeWidgetInit(
+    const AppWindow::CreateParams& create_params,
+    views::Widget::InitParams* init_params,
+    views::Widget* widget) {
+#if defined(OS_LINUX) && !defined(OS_CHROMEOS)
+  std::string app_name = web_app::GenerateApplicationNameFromExtensionId(
+      app_window()->extension_id());
+  // Set up a custom WM_CLASS for app windows. This allows task switchers in
+  // X11 environments to distinguish them from main browser windows.
+  init_params->wm_class_name = web_app::GetWMClassFromAppName(app_name);
+  init_params->wm_class_class = shell_integration_linux::GetProgramClassName();
+  const char kX11WindowRoleApp[] = "app";
+  init_params->wm_role_name = std::string(kX11WindowRoleApp);
+#endif
+
+  ChromeNativeAppWindowViews::OnBeforeWidgetInit(create_params, init_params,
+                                                 widget);
+
+#if defined(OS_CHROMEOS)
+  if (create_params.is_ime_window) {
+    // Puts ime windows into ime window container.
+    init_params->parent =
+        ash::Shell::GetContainer(ash::Shell::GetPrimaryRootWindow(),
+                                 ash::kShellWindowId_ImeWindowParentContainer);
+  }
+#endif
+}
+
+void ChromeNativeAppWindowViewsAura::OnBeforePanelWidgetInit(
+    views::Widget::InitParams* init_params,
+    views::Widget* widget) {
+  ChromeNativeAppWindowViews::OnBeforePanelWidgetInit(init_params, widget);
+
+  if (ash::Shell::HasInstance()) {
+    // Open a new panel on the target root.
+    init_params->bounds = ash::ScreenUtil::ConvertRectToScreen(
+        ash::Shell::GetTargetRootWindow(), gfx::Rect(GetPreferredSize()));
+  }
+}
+
+apps::AppWindowFrameView*
+ChromeNativeAppWindowViewsAura::CreateNonStandardAppFrame() {
+  apps::AppWindowFrameView* frame =
+      ChromeNativeAppWindowViews::CreateNonStandardAppFrame();
+
+  // For Aura windows on the Ash desktop the sizes are different and the user
+  // can resize the window from slightly outside the bounds as well.
+  if (chrome::IsNativeWindowInAsh(widget()->GetNativeWindow())) {
+    frame->SetResizeSizes(ash::kResizeInsideBoundsSize,
+                          ash::kResizeOutsideBoundsSize,
+                          ash::kResizeAreaCornerSize);
+  }
+
+#if !defined(OS_CHROMEOS)
+  // For non-Ash windows, install an easy resize window targeter, which ensures
+  // that the root window (not the app) receives mouse events on the edges.
+  if (chrome::GetHostDesktopTypeForNativeWindow(widget()->GetNativeWindow()) !=
+      chrome::HOST_DESKTOP_TYPE_ASH) {
+    aura::Window* window = widget()->GetNativeWindow();
+    int resize_inside = frame->resize_inside_bounds_size();
+    gfx::Insets inset(resize_inside, resize_inside, resize_inside,
+                      resize_inside);
+    // Add the EasyResizeWindowTargeter on the window, not its root window. The
+    // root window does not have a delegate, which is needed to handle the event
+    // in Linux.
+    window->SetEventTargeter(scoped_ptr<ui::EventTargeter>(
+        new wm::EasyResizeWindowTargeter(window, inset, inset)));
+  }
+#endif
+
+  return frame;
+}
+
+gfx::Rect ChromeNativeAppWindowViewsAura::GetRestoredBounds() const {
+  gfx::Rect* bounds =
+      widget()->GetNativeWindow()->GetProperty(ash::kRestoreBoundsOverrideKey);
+  if (bounds && !bounds->IsEmpty())
+    return *bounds;
+
+  return ChromeNativeAppWindowViews::GetRestoredBounds();
+}
+
+ui::WindowShowState ChromeNativeAppWindowViewsAura::GetRestoredState() const {
+  // Use kRestoreShowStateKey in case a window is minimized/hidden.
+  ui::WindowShowState restore_state = widget()->GetNativeWindow()->GetProperty(
+      aura::client::kRestoreShowStateKey);
+  if (widget()->GetNativeWindow()->GetProperty(
+          ash::kRestoreBoundsOverrideKey)) {
+    // If an override is given, we use that restore state (after filtering).
+    restore_state = widget()->GetNativeWindow()->GetProperty(
+        ash::kRestoreShowStateOverrideKey);
+  } else {
+    // Otherwise first normal states are checked.
+    if (IsMaximized())
+      return ui::SHOW_STATE_MAXIMIZED;
+    if (IsFullscreen()) {
+      if (immersive_fullscreen_controller_.get() &&
+          immersive_fullscreen_controller_->IsEnabled()) {
+        // Restore windows which were previously in immersive fullscreen to
+        // maximized. Restoring the window to a different fullscreen type
+        // makes for a bad experience.
+        return ui::SHOW_STATE_MAXIMIZED;
+      }
+      return ui::SHOW_STATE_FULLSCREEN;
+    }
+  }
+  // Whitelist states to return so that invalid and transient states
+  // are not saved and used to restore windows when they are recreated.
+  switch (restore_state) {
+    case ui::SHOW_STATE_NORMAL:
+    case ui::SHOW_STATE_MAXIMIZED:
+    case ui::SHOW_STATE_FULLSCREEN:
+      return restore_state;
+
+    case ui::SHOW_STATE_DEFAULT:
+    case ui::SHOW_STATE_MINIMIZED:
+    case ui::SHOW_STATE_INACTIVE:
+    case ui::SHOW_STATE_END:
+      return ui::SHOW_STATE_NORMAL;
+  }
+
+  return ui::SHOW_STATE_NORMAL;
+}
+
+bool ChromeNativeAppWindowViewsAura::IsAlwaysOnTop() const {
+  return app_window()->window_type_is_panel()
+             ? ash::wm::GetWindowState(widget()->GetNativeWindow())
+                   ->panel_attached()
+             : widget()->IsAlwaysOnTop();
+}
+
+void ChromeNativeAppWindowViewsAura::ShowContextMenuForView(
+    views::View* source,
+    const gfx::Point& p,
+    ui::MenuSourceType source_type) {
+#if defined(OS_CHROMEOS)
+  scoped_ptr<ui::MenuModel> model =
+      CreateMultiUserContextMenu(app_window()->GetNativeWindow());
+  if (!model.get())
+    return;
+
+  // Only show context menu if point is in caption.
+  gfx::Point point_in_view_coords(p);
+  views::View::ConvertPointFromScreen(widget()->non_client_view(),
+                                      &point_in_view_coords);
+  int hit_test =
+      widget()->non_client_view()->NonClientHitTest(point_in_view_coords);
+  if (hit_test == HTCAPTION) {
+    menu_runner_.reset(new views::MenuRunner(
+        model.get(),
+        views::MenuRunner::HAS_MNEMONICS | views::MenuRunner::CONTEXT_MENU));
+    if (menu_runner_->RunMenuAt(source->GetWidget(), NULL,
+                                gfx::Rect(p, gfx::Size(0, 0)),
+                                views::MENU_ANCHOR_TOPLEFT, source_type) ==
+        views::MenuRunner::MENU_DELETED) {
+      return;
+    }
+  }
+#endif
+}
+
+views::NonClientFrameView*
+ChromeNativeAppWindowViewsAura::CreateNonClientFrameView(
+    views::Widget* widget) {
+  if (chrome::IsNativeViewInAsh(widget->GetNativeView())) {
+    // Set the delegate now because CustomFrameViewAsh sets the
+    // WindowStateDelegate if one is not already set.
+    ash::wm::GetWindowState(GetNativeWindow())
+        ->SetDelegate(
+            scoped_ptr<ash::wm::WindowStateDelegate>(
+                new NativeAppWindowStateDelegate(app_window(), this)).Pass());
+
+    if (IsFrameless())
+      return CreateNonStandardAppFrame();
+
+    if (app_window()->window_type_is_panel()) {
+      views::NonClientFrameView* frame_view =
+          new ash::PanelFrameView(widget, ash::PanelFrameView::FRAME_ASH);
+      frame_view->set_context_menu_controller(this);
+      return frame_view;
+    }
+
+    ash::CustomFrameViewAsh* custom_frame_view =
+        new ash::CustomFrameViewAsh(widget);
+    // Non-frameless app windows can be put into immersive fullscreen.
+    immersive_fullscreen_controller_.reset(
+        new ash::ImmersiveFullscreenController());
+    custom_frame_view->InitImmersiveFullscreenControllerForView(
+        immersive_fullscreen_controller_.get());
+    custom_frame_view->GetHeaderView()->set_context_menu_controller(this);
+
+    if (HasFrameColor()) {
+      custom_frame_view->SetFrameColors(ActiveFrameColor(),
+                                        InactiveFrameColor());
+    }
+
+    return custom_frame_view;
+  }
+
+  return ChromeNativeAppWindowViews::CreateNonClientFrameView(widget);
+}
+
+void ChromeNativeAppWindowViewsAura::SetFullscreen(int fullscreen_types) {
+  ChromeNativeAppWindowViews::SetFullscreen(fullscreen_types);
+
+  if (immersive_fullscreen_controller_.get()) {
+    // |immersive_fullscreen_controller_| should only be set if immersive
+    // fullscreen is the fullscreen type used by the OS.
+    immersive_fullscreen_controller_->SetEnabled(
+        ash::ImmersiveFullscreenController::WINDOW_TYPE_PACKAGED_APP,
+        (fullscreen_types & AppWindow::FULLSCREEN_TYPE_OS) != 0);
+    // Autohide the shelf instead of hiding the shelf completely when only in
+    // OS fullscreen.
+    ash::wm::WindowState* window_state =
+        ash::wm::GetWindowState(widget()->GetNativeWindow());
+    window_state->set_hide_shelf_when_fullscreen(fullscreen_types !=
+                                                 AppWindow::FULLSCREEN_TYPE_OS);
+    DCHECK(ash::Shell::HasInstance());
+    ash::Shell::GetInstance()->UpdateShelfVisibility();
+  }
+}
+
+void ChromeNativeAppWindowViewsAura::UpdateShape(scoped_ptr<SkRegion> region) {
+  bool had_shape = !!shape();
+
+  ChromeNativeAppWindowViews::UpdateShape(region.Pass());
+
+  scoped_ptr<ui::EventTargeter> targeter;
+  aura::Window* native_window = widget()->GetNativeWindow();
+  if (shape() && !had_shape)
+    targeter.reset(new ShapedAppWindowTargeter(native_window, this));
+  native_window->SetEventTargeter(targeter.Pass());
+}