arc: Support running Arc app in shelf

chrome/browser/ui/ash/launcher/app_window_launcher_item_controller.cc

 // Copyright 2014 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/ash/launcher/app_window_launcher_item_controller.h"
 
-#include "ash/wm/window_state.h"
 #include "ash/wm/window_util.h"
-#include "chrome/browser/ui/ash/launcher/chrome_launcher_app_menu_item.h"
-#include "chrome/browser/ui/ash/launcher/chrome_launcher_app_menu_item_v2app.h"
 #include "chrome/browser/ui/ash/launcher/chrome_launcher_controller.h"
-#include "chrome/browser/ui/ash/launcher/launcher_application_menu_item_model.h"
-#include "chrome/browser/ui/ash/launcher/launcher_context_menu.h"
-#include "chrome/browser/ui/ash/launcher/launcher_item_controller.h"
-#include "components/favicon/content/content_favicon_driver.h"
-#include "content/public/browser/web_contents.h"
-#include "extensions/browser/app_window/app_window.h"
-#include "extensions/browser/app_window/native_app_window.h"
-#include "skia/ext/image_operations.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/window.h"
-#include "ui/events/event.h"
-#include "ui/gfx/image/image_skia.h"
+#include "ui/base/base_window.h"
 #include "ui/wm/core/window_animations.h"
 
-using extensions::AppWindow;
-
 namespace {
 
-// Size of the icon in the shelf launcher in display-independent pixels.
-const int kAppListIconSize = 24;
+// Functor for std::find_if used in AppLauncherItemController.
+class WindowHasNativeWindow {
+ public:
+  explicit WindowHasNativeWindow(aura::Window* window) : window_(window) {}
 
-// This will return a slightly smaller icon than the app icon to be used in
-// the application list menu.
-gfx::Image GetAppListIcon(AppWindow* app_window) {
-  // TODO(skuhne): We instead might want to use LoadImages in
-  // AppWindow::UpdateExtensionAppIcon() to let the extension give us
-  // pre-defined icons in the launcher and the launcher list sizes. Since there
-  // is no mock yet, doing this now seems a bit premature and we scale for the
-  // time being.
-  if (app_window->app_icon().IsEmpty())
-    return gfx::Image();
-
-  SkBitmap bmp =
-      skia::ImageOperations::Resize(*app_window->app_icon().ToSkBitmap(),
-                                    skia::ImageOperations::RESIZE_BEST,
-                                    kAppListIconSize,
-                                    kAppListIconSize);
-  return gfx::Image(gfx::ImageSkia::CreateFrom1xBitmap(bmp));
-}
-
-// Functor for std::find_if used in AppLauncherItemController.
-class AppWindowHasWindow {
- public:
-  explicit AppWindowHasWindow(aura::Window* window) : window_(window) {}
-
-  bool operator()(AppWindow* app_window) const {
-    return app_window->GetNativeWindow() == window_;
+  bool operator()(ui::BaseWindow* window) const {
+    return window->GetNativeWindow() == window_;
   }
-
  private:
   const aura::Window* window_;
 };
 
 }  // namespace
 
 AppWindowLauncherItemController::AppWindowLauncherItemController(
     Type type,
     const std::string& app_shelf_id,
     const std::string& app_id,
     ChromeLauncherController* controller)
     : LauncherItemController(type, app_id, controller),
-      last_active_app_window_(NULL),
       app_shelf_id_(app_shelf_id),
       observed_windows_(this) {}
 
 AppWindowLauncherItemController::~AppWindowLauncherItemController() {}
 
-void AppWindowLauncherItemController::AddAppWindow(
-    AppWindow* app_window,
-    ash::ShelfItemStatus status) {
-  if (app_window->window_type_is_panel() && type() != TYPE_APP_PANEL)
-    LOG(ERROR) << "AppWindow of type Panel added to non-panel launcher item";
-  app_windows_.push_front(app_window);
-  observed_windows_.Add(app_window->GetNativeWindow());
+void AppWindowLauncherItemController::AddWindow(ui::BaseWindow* window) {
+  windows_.push_front(window);
+  observed_windows_.Add(window->GetNativeWindow());
 }
 
-void AppWindowLauncherItemController::RemoveAppWindowForWindow(
+void AppWindowLauncherItemController::RemoveWindowForNativeWindow(
     aura::Window* window) {
-  AppWindowList::iterator iter = std::find_if(
-      app_windows_.begin(), app_windows_.end(), AppWindowHasWindow(window));
-  if (iter != app_windows_.end()) {
-    if (*iter == last_active_app_window_)
-      last_active_app_window_ = NULL;
-    app_windows_.erase(iter);
+  WindowList::iterator iter = std::find_if(windows_.begin(), windows_.end(),
+                                           WindowHasNativeWindow(window));

[xiyuan, 2016/03/23 23:22:53]

nit: we can use lambda

e.g.

auto iter = std::find_if(windows_.begin(), windows_.end(),
                         [window](ui::BaseWindow* base_window) {
                           return base_window->GetNativeWindow() == window;
                         });

[khmel, 2016/03/24 16:30:37]

Thanks for idea, also use helper function to reduce code dup.

+  if (iter != windows_.end()) {
+    if (*iter == last_active_window_)
+      last_active_window_ = nullptr;
+    OnWindowRemoved(*iter);
+    windows_.erase(iter);
   }
   observed_windows_.Remove(window);
 }
 
 void AppWindowLauncherItemController::SetActiveWindow(aura::Window* window) {
-  AppWindowList::iterator iter = std::find_if(
-      app_windows_.begin(), app_windows_.end(), AppWindowHasWindow(window));
-  if (iter != app_windows_.end())
-    last_active_app_window_ = *iter;
+  WindowList::iterator iter = std::find_if(windows_.begin(), windows_.end(),
+                                           WindowHasNativeWindow(window));

[xiyuan, 2016/03/23 23:22:53]

nit: use lambda ?

[khmel, 2016/03/24 16:30:37]

Done.

+  if (iter != windows_.end())
+    last_active_window_ = *iter;
 }
 
 bool AppWindowLauncherItemController::IsOpen() const {
-  return !app_windows_.empty();
+  return !windows_.empty();
 }
 
 bool AppWindowLauncherItemController::IsVisible() const {
   // Return true if any windows are visible.
-  for (AppWindowList::const_iterator iter = app_windows_.begin();
-       iter != app_windows_.end();
-       ++iter) {
+  for (WindowList::const_iterator iter = windows_.begin();
+       iter != windows_.end(); ++iter) {

[xiyuan, 2016/03/23 23:22:52]

nit: We can use range loop now.

i.e.
for (const auto& window : windows_)

[khmel, 2016/03/24 16:30:37]

Done.

     if ((*iter)->GetNativeWindow()->IsVisible())
       return true;
   }
   return false;
 }
 
 void AppWindowLauncherItemController::Launch(ash::LaunchSource source,
                                              int event_flags) {
   launcher_controller()->LaunchApp(app_id(), source, ui::EF_NONE);
 }
 
 ash::ShelfItemDelegate::PerformedAction
 AppWindowLauncherItemController::Activate(ash::LaunchSource source) {
-  DCHECK(!app_windows_.empty());
-  AppWindow* window_to_activate =
-      last_active_app_window_ ? last_active_app_window_ : app_windows_.back();
-  window_to_activate->GetBaseWindow()->Activate();
+  DCHECK(!windows_.empty());
+  ui::BaseWindow* window_to_activate =
+      last_active_window_ ? last_active_window_ : windows_.back();
+  window_to_activate->Activate();
   return kExistingWindowActivated;
 }
 
 void AppWindowLauncherItemController::Close() {
   // Note: Closing windows may affect the contents of app_windows_.
-  AppWindowList windows_to_close = app_windows_;
-  for (AppWindowList::iterator iter = windows_to_close.begin();
-       iter != windows_to_close.end();
-       ++iter) {
-    (*iter)->GetBaseWindow()->Close();
+  WindowList windows_to_close = windows_;
+  for (WindowList::iterator iter = windows_to_close.begin();
+       iter != windows_to_close.end(); ++iter) {

[xiyuan, 2016/03/23 23:22:52]

nit: range loop?

[khmel, 2016/03/24 16:30:37]

Done.

+    (*iter)->Close();
   }
 }
 
 void AppWindowLauncherItemController::ActivateIndexedApp(size_t index) {
-  if (index >= app_windows_.size())
+  if (index >= windows_.size())
     return;
-  AppWindowList::iterator it = app_windows_.begin();
+  WindowList::iterator it = windows_.begin();
   std::advance(it, index);
   ShowAndActivateOrMinimize(*it);
 }
 
 ChromeLauncherAppMenuItems AppWindowLauncherItemController::GetApplicationList(
     int event_flags) {
   ChromeLauncherAppMenuItems items;
   items.push_back(new ChromeLauncherAppMenuItem(GetTitle(), NULL, false));
-  int index = 0;
-  for (AppWindowList::iterator iter = app_windows_.begin();
-       iter != app_windows_.end();
-       ++iter) {
-    AppWindow* app_window = *iter;
-
-    // If the app's web contents provides a favicon, use it. Otherwise, use a
-    // scaled down app icon.
-    favicon::FaviconDriver* favicon_driver =
-        favicon::ContentFaviconDriver::FromWebContents(
-            app_window->web_contents());
-    gfx::Image result = favicon_driver->GetFavicon();
-    if (result.IsEmpty())
-      result = GetAppListIcon(app_window);
-
-    items.push_back(new ChromeLauncherAppMenuItemV2App(
-        app_window->GetTitle(),
-        &result,  // Will be copied
-        app_id(),
-        launcher_controller(),
-        index,
-        index == 0 /* has_leading_separator */));
-    ++index;
-  }
   return items;
 }
 
 ash::ShelfItemDelegate::PerformedAction
 AppWindowLauncherItemController::ItemSelected(const ui::Event& event) {
-  if (app_windows_.empty())
+  if (windows_.empty())
     return kNoAction;
-  if (type() == TYPE_APP_PANEL) {
-    DCHECK_EQ(app_windows_.size(), 1u);
-    AppWindow* panel = app_windows_.front();
-    aura::Window* panel_window = panel->GetNativeWindow();
-    // If the panel is attached on another display, move it to the current
-    // display and activate it.
-    if (ash::wm::GetWindowState(panel_window)->panel_attached() &&
-        ash::wm::MoveWindowToEventRoot(panel_window, event)) {
-      if (!panel->GetBaseWindow()->IsActive())
-        return ShowAndActivateOrMinimize(panel);
-    } else {
-      return ShowAndActivateOrMinimize(panel);
-    }
+
+  DCHECK(type() == TYPE_APP);

[xiyuan, 2016/03/23 23:22:53]

nit: DCHECK_EQ(TYPE_APP, type());

[khmel, 2016/03/24 16:30:37]

Done.

+  ui::BaseWindow* window_to_show =
+      last_active_window_ ? last_active_window_ : windows_.front();
+  // If the event was triggered by a keystroke, we try to advance to the next
+  // item if the window we are trying to activate is already active.
+  if (windows_.size() >= 1 && window_to_show->IsActive() &&
+      event.type() == ui::ET_KEY_RELEASED) {
+    return ActivateOrAdvanceToNextAppWindow(window_to_show);
   } else {
-    AppWindow* window_to_show = last_active_app_window_
-                                    ? last_active_app_window_
-                                    : app_windows_.front();
-    // If the event was triggered by a keystroke, we try to advance to the next
-    // item if the window we are trying to activate is already active.
-    if (app_windows_.size() >= 1 &&
-        window_to_show->GetBaseWindow()->IsActive() &&
-        event.type() == ui::ET_KEY_RELEASED) {
-      return ActivateOrAdvanceToNextAppWindow(window_to_show);
-    } else {
-      return ShowAndActivateOrMinimize(window_to_show);
-    }
+    return ShowAndActivateOrMinimize(window_to_show);
   }
-  return kNoAction;
 }
 
 base::string16 AppWindowLauncherItemController::GetTitle() {
-  // For panels return the title of the contents if set.
-  // Otherwise return the title of the app.
-  if (type() == TYPE_APP_PANEL && !app_windows_.empty()) {
-    AppWindow* app_window = app_windows_.front();
-    if (app_window->web_contents()) {
-      base::string16 title = app_window->web_contents()->GetTitle();
-      if (!title.empty())
-        return title;
-    }
-  }
   return GetAppTitle();
 }
 
 ash::ShelfMenuModel* AppWindowLauncherItemController::CreateApplicationMenu(
     int event_flags) {
-  return new LauncherApplicationMenuItemModel(GetApplicationList(event_flags));
+  return nullptr;

[xiyuan, 2016/03/23 23:22:52]

ArcAppWindowLauncherItemController does not overide this. So it will have no
menu. Is it intentional? Or we should just leave old impl here?

[khmel, 2016/03/24 16:30:37]

For better reading it is better remove it here.

 }
 
 bool AppWindowLauncherItemController::IsDraggable() {
-  if (type() == TYPE_APP_PANEL)
-    return true;
+  DCHECK(type() == TYPE_APP);

[xiyuan, 2016/03/23 23:22:53]

nit: DCHECK_EQ(TYPE_APP, type());

[khmel, 2016/03/24 16:30:37]

Done.

   return CanPin();
 }
 
 bool AppWindowLauncherItemController::CanPin() const {
   return launcher_controller()->CanPin(app_id());
 }
 
 bool AppWindowLauncherItemController::ShouldShowTooltip() {
-  if (type() == TYPE_APP_PANEL && IsVisible())
-    return false;
+  DCHECK(type() == TYPE_APP);

[xiyuan, 2016/03/23 23:22:53]

nit: DCHECK_EQ(TYPE_APP, type());

[khmel, 2016/03/24 16:30:37]

Done.

   return true;
 }
 
 void AppWindowLauncherItemController::OnWindowPropertyChanged(
     aura::Window* window,
     const void* key,
     intptr_t old) {
   if (key == aura::client::kDrawAttentionKey) {
     ash::ShelfItemStatus status;
     if (ash::wm::IsActiveWindow(window)) {
       status = ash::STATUS_ACTIVE;
     } else if (window->GetProperty(aura::client::kDrawAttentionKey)) {
       status = ash::STATUS_ATTENTION;
     } else {
       status = ash::STATUS_RUNNING;
     }
     launcher_controller()->SetItemStatus(shelf_id(), status);
   }
 }
 
 ash::ShelfItemDelegate::PerformedAction
 AppWindowLauncherItemController::ShowAndActivateOrMinimize(
-    AppWindow* app_window) {
+    ui::BaseWindow* app_window) {
   // Either show or minimize windows when shown from the launcher.
   return launcher_controller()->ActivateWindowOrMinimizeIfActive(
-      app_window->GetBaseWindow(), GetApplicationList(0).size() == 2);
+      app_window, GetApplicationList(0).size() == 2);
 }
 
 ash::ShelfItemDelegate::PerformedAction
 AppWindowLauncherItemController::ActivateOrAdvanceToNextAppWindow(
-    AppWindow* window_to_show) {
-  AppWindowList::iterator i(
-      std::find(app_windows_.begin(), app_windows_.end(), window_to_show));
-  if (i != app_windows_.end()) {
-    if (++i != app_windows_.end())
+    ui::BaseWindow* window_to_show) {
+  WindowList::iterator i(
+      std::find(windows_.begin(), windows_.end(), window_to_show));
+  if (i != windows_.end()) {
+    if (++i != windows_.end())
       window_to_show = *i;
     else
-      window_to_show = app_windows_.front();
+      window_to_show = windows_.front();
   }
-  if (window_to_show->GetBaseWindow()->IsActive()) {
+  if (window_to_show->IsActive()) {
     // Coming here, only a single window is active. For keyboard activations
     // the window gets animated.
     AnimateWindow(window_to_show->GetNativeWindow(),
                   wm::WINDOW_ANIMATION_TYPE_BOUNCE);
   } else {
     return ShowAndActivateOrMinimize(window_to_show);
   }
   return kNoAction;
 }