Introduce WindowStateDelegate::ToggleFullscreen

chrome/browser/ui/views/apps/native_app_window_views.cc

Index: chrome/browser/ui/views/apps/native_app_window_views.cc
diff --git a/chrome/browser/ui/views/apps/native_app_window_views.cc b/chrome/browser/ui/views/apps/native_app_window_views.cc
index 215eae927bff86bd9ea924ffea7e4c9095170f03..e5a9df82017400d9c73e260ab7ea8b2fd92fd645 100644
--- a/chrome/browser/ui/views/apps/native_app_window_views.cc
+++ b/chrome/browser/ui/views/apps/native_app_window_views.cc
@@ -4,6 +4,8 @@
 
 #include "chrome/browser/ui/views/apps/native_app_window_views.h"
 
+#include "apps/shell_window.h"
+#include "apps/shell_window_registry.h"
 #include "apps/ui/views/shell_window_frame_view.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
@@ -13,6 +15,7 @@
 #include "chrome/browser/extensions/extension_host.h"
 #include "chrome/browser/favicon/favicon_tab_helper.h"
 #include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/ui/host_desktop.h"
 #include "chrome/browser/ui/views/extensions/extension_keybinding_registry_views.h"
 #include "chrome/browser/web_applications/web_app.h"
 #include "chrome/common/chrome_switches.h"
@@ -46,6 +49,7 @@
 #include "ash/wm/custom_frame_view_ash.h"
 #include "ash/wm/panels/panel_frame_view.h"
 #include "ash/wm/window_state.h"
+#include "ash/wm/window_state_delegate.h"
 #include "chrome/browser/ui/ash/ash_util.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/client/window_tree_client.h"
@@ -121,6 +125,36 @@ void CreateIconAndSetRelaunchDetails(
 }
 #endif
 
+#if defined(USE_ASH)
+class NativeAppWindowStateDelegate : public ash::wm::WindowStateDelegate {
+ public:
+  NativeAppWindowStateDelegate() {}
+  virtual ~NativeAppWindowStateDelegate(){}
+
+  virtual bool ToggleFullscreen(ash::wm::WindowState* window_state) OVERRIDE {
+    bool is_fullscreen = window_state->IsFullscreen();
+
+    // Windows which cannot be maximized should not be fullscreened.
+    if (!is_fullscreen && !window_state->CanMaximize())
+      return true;
+    // |window| may belong to a shell window.
+    apps::ShellWindow* shell_window = apps::ShellWindowRegistry::
+        GetShellWindowForNativeWindowAnyProfile(window_state->window());
+    DCHECK(shell_window);
+    if (!shell_window)
+      return true;
+    if (is_fullscreen)
+      shell_window->Restore();
+    else
+      shell_window->Fullscreen();
+    return true;
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(NativeAppWindowStateDelegate);
+};
+#endif  // USE_ASH
+
 }  // namespace
 
 NativeAppWindowViews::NativeAppWindowViews(
@@ -152,6 +186,13 @@ NativeAppWindowViews::NativeAppWindowViews(
 
   OnViewWasResized();
   window_->AddObserver(this);
+#if defined(USE_ASH)
+  if (chrome::GetHostDesktopTypeForNativeView(GetNativeWindow()) ==
+      chrome::HOST_DESKTOP_TYPE_ASH) {
+    ash::wm::GetWindowState(GetNativeWindow())->SetDelegate(
+        new NativeAppWindowStateDelegate());
+  }
+#endif
 }
 
 NativeAppWindowViews::~NativeAppWindowViews() {