aura: Track mouse button state.

ui/aura/desktop_unittest.cc

 // Copyright (c) 2011 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 "ui/aura/desktop.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/aura/event.h"
 #include "ui/aura/test/aura_test_base.h"
 #include "ui/aura/test/test_window_delegate.h"
@@ skipping 39 matching lines @@
  private:
   int non_client_count_;
   gfx::Point non_client_location_;
   int mouse_event_count_;
   gfx::Point mouse_event_location_;
   int mouse_event_flags_;
 };
 
 }  // namespace
 
-class DesktopTest : public AuraTestBase {
-};
+typedef AuraTestBase DesktopTest;
 
 TEST_F(DesktopTest, DispatchMouseEvent) {
   // Create two non-overlapping windows so we don't have to worry about which
   // is on top.
   scoped_ptr<NonClientDelegate> delegate1(new NonClientDelegate());
   scoped_ptr<NonClientDelegate> delegate2(new NonClientDelegate());
   const int kWindowWidth = 123;
   const int kWindowHeight = 45;
   gfx::Rect bounds1(100, 200, kWindowWidth, kWindowHeight);
   gfx::Rect bounds2(300, 400, kWindowWidth, kWindowHeight);
@@ skipping 14 matching lines @@
   EXPECT_EQ(gfx::Point(1, 1), delegate1->non_client_location());
   // Mouse event was received by target window.
   EXPECT_EQ(1, delegate1->mouse_event_count());
   EXPECT_EQ(0, delegate2->mouse_event_count());
   // Event was in local coordinates.
   EXPECT_EQ(gfx::Point(1, 1), delegate1->mouse_event_location());
   // Non-client flag was set.
   EXPECT_TRUE(delegate1->mouse_event_flags() & ui::EF_IS_NON_CLIENT);
 }
 
+// Check that we correctly track the state of the mouse buttons in response to
+// button press and release events.
+TEST_F(DesktopTest, MouseButtonState) {
+  Desktop* desktop = Desktop::GetInstance();
+  EXPECT_FALSE(desktop->IsMouseButtonDown());
+
+  gfx::Point location;
+  scoped_ptr<MouseEvent> event;
+
+  // Press the left button.
+  event.reset(new MouseEvent(
+      ui::ET_MOUSE_PRESSED,
+      location,
+      ui::EF_LEFT_BUTTON_DOWN));
+  desktop->DispatchMouseEvent(event.get());
+  EXPECT_TRUE(desktop->IsMouseButtonDown());
+
+  // Additionally press the right.
+  event.reset(new MouseEvent(
+      ui::ET_MOUSE_PRESSED,
+      location,
+      ui::EF_LEFT_BUTTON_DOWN | ui::EF_RIGHT_BUTTON_DOWN));
+  desktop->DispatchMouseEvent(event.get());
+  EXPECT_TRUE(desktop->IsMouseButtonDown());
+
+  // Release the left button.
+  event.reset(new MouseEvent(
+      ui::ET_MOUSE_RELEASED,
+      location,
+      ui::EF_RIGHT_BUTTON_DOWN));
+  desktop->DispatchMouseEvent(event.get());
+  EXPECT_TRUE(desktop->IsMouseButtonDown());
+
+  // Release the right button.  We should ignore the Shift-is-down flag.
+  event.reset(new MouseEvent(
+      ui::ET_MOUSE_RELEASED,
+      location,
+      ui::EF_SHIFT_DOWN));
+  desktop->DispatchMouseEvent(event.get());
+  EXPECT_FALSE(desktop->IsMouseButtonDown());
+
+  // Press the middle button.
+  event.reset(new MouseEvent(
+      ui::ET_MOUSE_PRESSED,
+      location,
+      ui::EF_MIDDLE_BUTTON_DOWN));
+  desktop->DispatchMouseEvent(event.get());
+  EXPECT_TRUE(desktop->IsMouseButtonDown());
+}
+
 }  // namespace test
 }  // namespace aura