Change status button menu implementation from Menu2 to MenuItemView.

chrome/browser/chromeos/status/clock_menu_button.cc

Index: chrome/browser/chromeos/status/clock_menu_button.cc
diff --git a/chrome/browser/chromeos/status/clock_menu_button.cc b/chrome/browser/chromeos/status/clock_menu_button.cc
index 54ae8d732acf4cb9791a51d54e992709ad85439b..d7328398eba7dbff54cc5d6bd5c2905643c4852b 100644
--- a/chrome/browser/chromeos/status/clock_menu_button.cc
+++ b/chrome/browser/chromeos/status/clock_menu_button.cc
@@ -20,8 +20,18 @@
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/font.h"
+#include "views/widget/widget.h"
+#include "views/window/window.h"
 
-namespace chromeos {
+using views::MenuItemView;
+
+namespace {
+
+// MenuItemView item ids
+enum {
+  CLOCK_DISPLAY_ITEM,
+  CLOCK_OPEN_OPTIONS_ITEM,
+};
 
 // Amount of slop to add into the timer to make sure we're into the next minute
 // when the timer goes off.
@@ -33,6 +43,10 @@ const int kFontSizeDelta = 0;
 const int kFontSizeDelta = 1;
 #endif
 
+}  // namespace
+
+namespace chromeos {
+
 ClockMenuButton::ClockMenuButton(StatusAreaHost* host)
     : StatusAreaButton(this),
       host_(host) {
@@ -115,35 +129,20 @@ void ClockMenuButton::Observe(NotificationType type,
   }
 }
 
-
-////////////////////////////////////////////////////////////////////////////////
-// ClockMenuButton, ui::MenuModel implementation:
-
-int ClockMenuButton::GetItemCount() const {
-  // If options dialog is unavailable, don't count a separator and configure
-  // menu item.
-  return host_->ShouldOpenButtonOptions(this) ? 3 : 1;
-}
-
-ui::MenuModel::ItemType ClockMenuButton::GetTypeAt(int index) const {
-  // There's a separator between the current date and the menu item to open
-  // the options menu.
-  return index == 1 ? ui::MenuModel::TYPE_SEPARATOR:
-                      ui::MenuModel::TYPE_COMMAND;
-}
-
-string16 ClockMenuButton::GetLabelAt(int index) const {
-  if (index == 0)
-    return base::TimeFormatFriendlyDate(base::Time::Now());
-  return l10n_util::GetStringUTF16(IDS_STATUSBAR_CLOCK_OPEN_OPTIONS_DIALOG);
+// ClockMenuButton, views::MenuDelegate implementation:

[oshima, 2011/04/15 22:26:51]

please use new format
// ClockMenuButton, ...... : -----------------
(to 80)

[rhashimoto, 2011/04/15 23:44:32]

Done.

+std::wstring ClockMenuButton::GetLabel(int id) const {
+  DCHECK_EQ(CLOCK_DISPLAY_ITEM, id);
+  const string16 label = base::TimeFormatFriendlyDate(base::Time::Now());
+  return UTF16ToWide(label);
 }
 
-bool ClockMenuButton::IsEnabledAt(int index) const {
-  // The 1st item is the current date, which is disabled.
-  return index != 0;
+bool ClockMenuButton::IsCommandEnabled(int id) const {
+  DCHECK(id == CLOCK_DISPLAY_ITEM || id == CLOCK_OPEN_OPTIONS_ITEM);
+  return id == CLOCK_OPEN_OPTIONS_ITEM;
 }
 
-void ClockMenuButton::ActivatedAt(int index) {
+void ClockMenuButton::ExecuteCommand(int id) {
+  DCHECK_EQ(CLOCK_OPEN_OPTIONS_ITEM, id);
   host_->OpenButtonOptions(this);
 }
 
@@ -165,12 +164,33 @@ void ClockMenuButton::TimezoneChanged(const icu::TimeZone& timezone) {
 // ClockMenuButton, views::ViewMenuDelegate implementation:
 
 void ClockMenuButton::RunMenu(views::View* source, const gfx::Point& pt) {
-  if (!clock_menu_.get())
-    clock_menu_.reset(new views::Menu2(this));
+  // View passed in must be a views::MenuButton, i.e. the ClockMenuButton.
+  DCHECK_EQ(source, this);
+
+  EnsureMenu();
+
+  // TODO(rhashimoto): Remove this workaround when WebUI provides a
+  // top-level widget on the ChromeOS login screen that is a window.
+  // The current BackgroundView class for the ChromeOS login screen
+  // creates a owning Widget that has a native GtkWindow but is not a
+  // Window.  This makes it impossible to get the NativeWindow via
+  // the views API.  This workaround casts the top-level NativeWidget
+  // to a NativeWindow that we can pass to MenuItemView::RunMenuAt().
+  gfx::NativeWindow window;
+  if (source->GetWindow())
+    window = source->GetWindow()->GetNativeWindow();
   else
-    clock_menu_->Rebuild();
-  clock_menu_->UpdateStates();
-  clock_menu_->RunMenuAt(pt, views::Menu2::ALIGN_TOPRIGHT);
+    window = GTK_WINDOW(source->GetWidget()->GetNativeView());

[oshima, 2011/04/15 22:26:51]

i now understand. all you need is this. 

window = GTK_WINDOW(source->GetWidget()->GetNativeView())

they're same thing. Just different type. (and you get null for Window because
Window is not a Widget, but Widget is a Window)

[rhashimoto, 2011/04/15 23:44:32]

I'd like to keep the other line present:

  window = source->GetWindow()->GetNativeWindow();

This is the line that will survive when WebUI provides a proper Window at the
top of the hierarchy.  The workaround with GTK_WINDOW (and the if-else) will
eventually go away.  It will be easier to make the change if the
platform-independent code is present.

[oshima, 2011/04/15 23:52:19]

It will not survive when you move to MenuButton. Window here means "Browser"
window, but not a window in X/Win sense.

[rhashimoto, 2011/04/21 19:31:17]

Done.

+
+  gfx::Point screen_loc;
+  views::View::ConvertPointToScreen(source, &screen_loc);
+  gfx::Rect bounds(screen_loc, source->size());
+  menu_->RunMenuAt(
+      window,
+      this,
+      bounds,
+      base::i18n::IsRTL() ? MenuItemView::TOPLEFT : MenuItemView::TOPRIGHT,
+      true);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -180,4 +200,25 @@ void ClockMenuButton::OnLocaleChanged() {
   UpdateText();
 }
 
+void ClockMenuButton::EnsureMenu() {
+  if (!menu_.get()) {
+    menu_.reset(new MenuItemView(this));
+
+    // Text for this item will be set by GetLabel().
+    menu_->AppendDelegateMenuItem(CLOCK_DISPLAY_ITEM);
+
+    // If options dialog is unavailable, don't count a separator and configure
+    // menu item.
+    if (host_->ShouldOpenButtonOptions(this)) {
+      menu_->AppendSeparator();
+
+      const string16 clock_open_options_label =
+          l10n_util::GetStringUTF16(IDS_STATUSBAR_CLOCK_OPEN_OPTIONS_DIALOG);
+      menu_->AppendMenuItemWithLabel(
+          CLOCK_OPEN_OPTIONS_ITEM,
+          UTF16ToWide(clock_open_options_label));
+    }
+  }
+}
+
 }  // namespace chromeos