Fixes the home card state transition for Ctrl-L.

- do not hide, toggle between minimized and centered.
- do nothing for other status.

Haven't looked deeply but this also fixes crbug.com/396401

BUG=396401
R=oshima@chromium.org
TEST=manually

Review URL: https://codereview.chromium.org/415723002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@285188 0039d316-1c4b-4281-b951-d872f2087c98

athena/home/home_card_impl.cc

@@ -183,10 +183,11 @@ class HomeCardImpl : public HomeCard,
   virtual bool OnAcceleratorFired(int command_id,
                                   const ui::Accelerator& accelerator) OVERRIDE {
     DCHECK_EQ(COMMAND_SHOW_HOME_CARD, command_id);
-    if (state_ == HIDDEN)
+
+    if (state_ == VISIBLE_CENTERED && original_state_ != VISIBLE_BOTTOM)
+      SetState(VISIBLE_MINIMIZED);
+    else if (state_ == VISIBLE_MINIMIZED)
       SetState(VISIBLE_CENTERED);
-    else
-      SetState(HIDDEN);
     return true;
   }
 

athena/home/home_card_unittest.cc

@@ -8,6 +8,7 @@
 #include "athena/activity/public/activity_manager.h"
 #include "athena/test/athena_test_base.h"
 #include "athena/wm/public/window_manager.h"
+#include "ui/aura/test/event_generator.h"
 
 namespace athena {
 
@@ -62,4 +63,31 @@ TEST_F(HomeCardTest, AppSelection) {
   WindowManager::GetInstance()->ToggleOverview();
 }
 
+TEST_F(HomeCardTest, Accelerators) {
+  EXPECT_EQ(HomeCard::VISIBLE_MINIMIZED, HomeCard::Get()->GetState());
+
+  aura::test::EventGenerator generator(root_window());
+  generator.PressKey(ui::VKEY_L, ui::EF_CONTROL_DOWN);
+  EXPECT_EQ(HomeCard::VISIBLE_CENTERED, HomeCard::Get()->GetState());
+
+  generator.PressKey(ui::VKEY_L, ui::EF_CONTROL_DOWN);
+  EXPECT_EQ(HomeCard::VISIBLE_MINIMIZED, HomeCard::Get()->GetState());
+
+  // Do nothing for BOTTOM.
+  WindowManager::GetInstance()->ToggleOverview();
+  EXPECT_EQ(HomeCard::VISIBLE_BOTTOM, HomeCard::Get()->GetState());
+  generator.PressKey(ui::VKEY_L, ui::EF_CONTROL_DOWN);
+  EXPECT_EQ(HomeCard::VISIBLE_BOTTOM, HomeCard::Get()->GetState());
+
+  // Do nothing if the centered state is a temporary state.
+  HomeCard::Get()->UpdateVirtualKeyboardBounds(gfx::Rect(0, 0, 100, 100));
+  EXPECT_EQ(HomeCard::VISIBLE_CENTERED, HomeCard::Get()->GetState());
+  generator.PressKey(ui::VKEY_L, ui::EF_CONTROL_DOWN);
+  EXPECT_EQ(HomeCard::VISIBLE_CENTERED, HomeCard::Get()->GetState());
+
+  // Overview mode has to finish before ending test, otherwise it crashes.
+  // TODO(mukai): fix this.
+  WindowManager::GetInstance()->ToggleOverview();
+}
+
 }  // namespace athena