Implement double/triple click functionality in views textfield.

views/controls/textfield/native_textfield_views_unittest.cc

Index: views/controls/textfield/native_textfield_views_unittest.cc
diff --git a/views/controls/textfield/native_textfield_views_unittest.cc b/views/controls/textfield/native_textfield_views_unittest.cc
index d8bffbe7a909a71138dcf0fce3f52d8e994081ed..382486881dda8cfd5db951d5490a9917ba046b66 100644
--- a/views/controls/textfield/native_textfield_views_unittest.cc
+++ b/views/controls/textfield/native_textfield_views_unittest.cc
@@ -104,6 +104,10 @@ class NativeTextfieldViewsTest : public ViewsTestBase,
     return textfield_view_->context_menu_menu_.get();
   }
 
+  NativeTextfieldViews::ClickState GetClickState() {
+    return textfield_view_->click_state_;
+  }
+
  protected:
   bool SendKeyEventToTextfieldViews(ui::KeyboardCode key_code,
                                     bool shift,
@@ -428,6 +432,31 @@ TEST_F(NativeTextfieldViewsTest, ContextMenuDisplayTest) {
   VerifyTextfieldContextMenuContents(true, GetContextMenu()->model());
 }
 
+TEST_F(NativeTextfieldViewsTest, DoubleAndTripleClickTest) {
+  InitTextfield(Textfield::STYLE_DEFAULT);
+  textfield_->SetText(ASCIIToUTF16("hello world"));
+  MouseEvent me(MouseEvent::ET_MOUSE_PRESSED, 0, 0, Event::EF_LEFT_BUTTON_DOWN);
+  EXPECT_EQ(NativeTextfieldViews::NONE, GetClickState());
+
+  // Test for double click.
+  textfield_view_->OnMousePressed(me);
+  EXPECT_STR_EQ("", textfield_->GetSelectedText());
+  EXPECT_EQ(NativeTextfieldViews::TRACKING_DOUBLE_CLICK, GetClickState());
+  textfield_view_->OnMousePressed(me);
+  EXPECT_STR_EQ("hello", textfield_->GetSelectedText());
+  EXPECT_EQ(NativeTextfieldViews::TRACKING_TRIPLE_CLICK, GetClickState());
+
+  // Test for triple click.
+  textfield_view_->OnMousePressed(me);
+  EXPECT_STR_EQ("hello world", textfield_->GetSelectedText());
+  EXPECT_EQ(NativeTextfieldViews::NONE, GetClickState());
+
+  // Another click should reset back to single click.
+  textfield_view_->OnMousePressed(me);
+  EXPECT_STR_EQ("", textfield_->GetSelectedText());
+  EXPECT_EQ(NativeTextfieldViews::TRACKING_DOUBLE_CLICK, GetClickState());
+}
+
 TEST_F(NativeTextfieldViewsTest, ReadOnlyTest) {
   scoped_ptr<TestViewsDelegate> test_views_delegate(new TestViewsDelegate());
   AutoReset<views::ViewsDelegate*> auto_reset(