Introduces 'highlighted' property to candidate view.

ash/ime/candidate_view_unittest.cc

+// Copyright 2014 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 "ash/ime/candidate_view.h"
+
+#include "base/logging.h"
+#include "base/strings/utf_string_conversions.h"
+#include "ui/aura/test/event_generator.h"
+#include "ui/aura/window.h"
+#include "ui/views/controls/button/button.h"
+#include "ui/views/layout/box_layout.h"
+#include "ui/views/layout/fill_layout.h"
+#include "ui/views/test/views_test_base.h"
+#include "ui/views/widget/widget_delegate.h"
+
+namespace ash {
+namespace ime {
+namespace {
+
+const char* const kDummyCandidates[] = {
+  "candidate1",
+  "candidate2",
+  "candidate3",
+};
+
+}  // namespace
+
+class CandidateViewTest : public views::ViewsTestBase,
+                          public views::ButtonListener {
+ public:
+  CandidateViewTest() : widget_(NULL), last_pressed_(NULL) {}
+  virtual ~CandidateViewTest() {}
+
+  virtual void SetUp() OVERRIDE {
+    views::ViewsTestBase::SetUp();
+
+    views::Widget::InitParams init_params(CreateParams(
+        views::Widget::InitParams::TYPE_WINDOW));
+
+    init_params.delegate = new views::WidgetDelegateView();
+
+    container_ = init_params.delegate->GetContentsView();
+    container_->SetLayoutManager(
+        new views::BoxLayout(views::BoxLayout::kVertical, 0, 0, 0));
+    for (size_t i = 0; i < arraysize(kDummyCandidates); ++i) {
+      CandidateView* candidate = new CandidateView(
+          this, ui::CandidateWindow::VERTICAL);
+      ui::CandidateWindow::Entry entry;
+      entry.value = base::UTF8ToUTF16(kDummyCandidates[i]);
+      candidate->SetEntry(entry);
+      container_->AddChildView(candidate);
+    }
+
+    widget_ = new views::Widget();
+    widget_->Init(init_params);
+    widget_->Show();
+
+    aura::Window* native_window = widget_->GetNativeWindow();
+    event_generator_.reset(new aura::test::EventGenerator(
+        native_window->GetRootWindow(), native_window));
+  }
+
+  virtual void TearDown() OVERRIDE {
+    widget_->Close();
+
+    views::ViewsTestBase::TearDown();
+  }
+
+ protected:
+  CandidateView* GetCandidateAt(int index) {
+    return static_cast<CandidateView*>(container_->child_at(index));
+  }
+
+  int GetHighlightedIndex(int* highlighted_count) const {
+    *highlighted_count = 0;
+    int last_highlighted = -1;
+    for (int i = 0; i < container_->child_count(); ++i) {
+      if (container_->child_at(i)->background() != NULL) {
+        (*highlighted_count)++;
+        last_highlighted = i;
+      }
+    }
+    return last_highlighted;
+  }
+
+  int GetLastPressedIndexAndReset() {
+    for (int i = 0; i < container_->child_count(); ++i) {
+      if (last_pressed_ == container_->child_at(i)) {
+        last_pressed_ = NULL;
+        return i;
+      }
+    }
+
+    DCHECK(last_pressed_ == NULL);
+    last_pressed_ = NULL;
+    return -1;
+  }
+
+  aura::test::EventGenerator* event_generator() {
+    return event_generator_.get();
+  }
+
+ private:
+  virtual void ButtonPressed(views::Button* sender,
+                             const ui::Event& event) OVERRIDE {
+    last_pressed_ = sender;
+  }
+
+  views::Widget* widget_;
+  views::View* container_;
+  scoped_ptr<aura::test::EventGenerator> event_generator_;
+  views::View* last_pressed_;
+
+  DISALLOW_COPY_AND_ASSIGN(CandidateViewTest);
+};
+
+TEST_F(CandidateViewTest, MouseHovers) {
+  GetCandidateAt(0)->SetHighlighted(true);
+
+  int highlighted_count = 0;
+  EXPECT_EQ(0, GetHighlightedIndex(&highlighted_count));
+  EXPECT_EQ(1, highlighted_count);
+
+  // Mouse hover shouldn't change the background.
+  event_generator()->MoveMouseTo(
+      GetCandidateAt(0)->GetBoundsInScreen().CenterPoint());
+  EXPECT_EQ(0, GetHighlightedIndex(&highlighted_count));
+  EXPECT_EQ(1, highlighted_count);
+
+  // Mouse hover shouldn't change the background.
+  event_generator()->MoveMouseTo(
+      GetCandidateAt(1)->GetBoundsInScreen().CenterPoint());
+  EXPECT_EQ(0, GetHighlightedIndex(&highlighted_count));
+  EXPECT_EQ(1, highlighted_count);
+
+  // Mouse hover shouldn't change the background.
+  event_generator()->MoveMouseTo(
+      GetCandidateAt(2)->GetBoundsInScreen().CenterPoint());
+  EXPECT_EQ(0, GetHighlightedIndex(&highlighted_count));
+  EXPECT_EQ(1, highlighted_count);
+}
+
+TEST_F(CandidateViewTest, MouseClick) {
+  event_generator()->MoveMouseTo(
+      GetCandidateAt(1)->GetBoundsInScreen().CenterPoint());
+  event_generator()->ClickLeftButton();
+  EXPECT_EQ(1, GetLastPressedIndexAndReset());
+}
+
+TEST_F(CandidateViewTest, ClickAndMove) {
+  GetCandidateAt(0)->SetHighlighted(true);
+
+  int highlighted_count = 0;
+  EXPECT_EQ(0, GetHighlightedIndex(&highlighted_count));
+  EXPECT_EQ(1, highlighted_count);
+
+  event_generator()->MoveMouseTo(
+      GetCandidateAt(2)->GetBoundsInScreen().CenterPoint());
+  event_generator()->PressLeftButton();
+  EXPECT_EQ(2, GetHighlightedIndex(&highlighted_count));
+  EXPECT_EQ(1, highlighted_count);
+
+  // Highlight follows the drag.
+  event_generator()->MoveMouseTo(
+      GetCandidateAt(1)->GetBoundsInScreen().CenterPoint());
+  EXPECT_EQ(1, GetHighlightedIndex(&highlighted_count));
+  EXPECT_EQ(1, highlighted_count);
+
+  event_generator()->MoveMouseTo(
+      GetCandidateAt(0)->GetBoundsInScreen().CenterPoint());
+  EXPECT_EQ(0, GetHighlightedIndex(&highlighted_count));
+  EXPECT_EQ(1, highlighted_count);
+
+  event_generator()->MoveMouseTo(
+      GetCandidateAt(1)->GetBoundsInScreen().CenterPoint());
+  EXPECT_EQ(1, GetHighlightedIndex(&highlighted_count));
+  EXPECT_EQ(1, highlighted_count);
+
+  event_generator()->ReleaseLeftButton();
+  EXPECT_EQ(1, GetLastPressedIndexAndReset());
+}
+
+}  // namespace ime
+}  // namespace ash