[Android] Composited selection handle rendering

content/browser/renderer_host/input/touch_selection_controller_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 "content/browser/renderer_host/input/touch_selection_controller.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/events/test/mock_motion_event.h"
+
+using ui::test::MockMotionEvent;
+
+namespace content {
+namespace {
+
+class MockTouchHandleDrawable : public TouchHandleDrawable {
+ public:
+  explicit MockTouchHandleDrawable(bool* contains_point)
+      : contains_point_(contains_point) {}
+  virtual ~MockTouchHandleDrawable() {}
+  virtual void SetEnabled(bool enabled) OVERRIDE {}
+  virtual void SetOrientation(TouchHandleOrientation orientation) OVERRIDE {}
+  virtual void SetAlpha(float alpha) OVERRIDE {}
+  virtual void SetFocus(const gfx::PointF& position) OVERRIDE {}
+  virtual void SetVisible(bool visible) OVERRIDE {}
+  virtual bool ContainsPoint(const gfx::PointF& point) const OVERRIDE {
+    return *contains_point_;
+  }
+
+ private:
+  bool* contains_point_;
+};
+
+}  // namespace
+
+class TouchSelectionControllerTest : public testing::Test,
+                                     public TouchSelectionControllerClient {
+ public:
+  TouchSelectionControllerTest()
+      : last_event_(SELECTION_CLEARED),
+        caret_moved_(false),
+        selection_moved_(false),
+        needs_animate_(false),
+        animation_enabled_(true),
+        dragging_enabled_(false) {}
+
+  virtual ~TouchSelectionControllerTest() {}
+
+  // testing::Test implementation.
+  virtual void SetUp() OVERRIDE {
+    controller_.reset(new TouchSelectionController(this));
+  }
+
+  virtual void TearDown() OVERRIDE { controller_.reset(); }
+
+  // TouchSelectionControllerClient implementation.
+
+  virtual bool SupportsAnimation() const OVERRIDE { return animation_enabled_; }
+
+  virtual void SetNeedsAnimate() OVERRIDE { needs_animate_ = true; }
+
+  virtual void MoveCaret(const gfx::PointF& position) OVERRIDE {
+    caret_moved_ = true;
+    caret_position_ = position;
+  }
+
+  virtual void SelectBetweenCoordinates(const gfx::PointF& start,
+                                        const gfx::PointF& end) OVERRIDE {
+    selection_moved_ = true;
+    selection_start_ = start;
+    selection_end_ = end;
+  }
+
+  virtual void OnSelectionEvent(SelectionEventType event,
+                                const gfx::PointF& anchor_position) OVERRIDE {
+    last_event_ = event;
+    last_event_anchor_ = anchor_position;
+  }
+
+  virtual scoped_ptr<TouchHandleDrawable> CreateDrawable() OVERRIDE {
+    return scoped_ptr<TouchHandleDrawable>(
+        new MockTouchHandleDrawable(&dragging_enabled_));
+  }
+
+  void SetAnimationEnabled(bool enabled) { animation_enabled_ = enabled; }
+  void SetDraggingEnabled(bool enabled) { dragging_enabled_ = enabled; }
+
+  void ClearSelection() {
+    controller_->OnSelectionBoundsChanged(gfx::RectF(),
+                                          TOUCH_HANDLE_ORIENTATION_UNDEFINED,
+                                          false,
+                                          gfx::RectF(),
+                                          TOUCH_HANDLE_ORIENTATION_UNDEFINED,
+                                          false);
+  }
+
+  void ClearInsertion() { ClearSelection(); }
+
+  void ChangeInsertion(const gfx::RectF& rect,
+                       TouchHandleOrientation orientation,
+                       bool visible) {
+    controller_->OnSelectionBoundsChanged(
+        rect, orientation, visible, rect, orientation, visible);
+  }
+
+  void ChangeInsertion(const gfx::RectF& rect, bool visible) {
+    ChangeInsertion(rect, TOUCH_HANDLE_CENTER, visible);
+  }
+
+  void ChangeSelection(const gfx::RectF& anchor_rect,
+                       TouchHandleOrientation anchor_orientation,
+                       bool anchor_visible,
+                       const gfx::RectF& focus_rect,
+                       TouchHandleOrientation focus_orientation,
+                       bool focus_visible) {
+    controller_->OnSelectionBoundsChanged(anchor_rect,
+                                          anchor_orientation,
+                                          anchor_visible,
+                                          focus_rect,
+                                          focus_orientation,
+                                          focus_visible);
+  }
+
+  void ChangeSelection(const gfx::RectF& anchor_rect,
+                       bool anchor_visible,
+                       const gfx::RectF& focus_rect,
+                       bool focus_visible) {
+    ChangeSelection(anchor_rect,
+                    TOUCH_HANDLE_LEFT,
+                    anchor_visible,
+                    focus_rect,
+                    TOUCH_HANDLE_RIGHT,
+                    focus_visible);
+  }
+
+  void Animate() {
+    base::TimeTicks now = base::TimeTicks::Now();
+    while (needs_animate_) {
+      needs_animate_ = false;
+      controller_->Animate(now);
+      now += base::TimeDelta::FromMilliseconds(16);
+    }
+  }
+
+  bool GetAndResetNeedsAnimate() {
+    bool needs_animate = needs_animate_;
+    Animate();
+    return needs_animate;
+  }
+
+  bool GetAndResetCaretMoved() {
+    bool moved = caret_moved_;
+    caret_moved_ = false;
+    return moved;
+  }
+
+  bool GetAndResetSelectionMoved() {
+    bool moved = selection_moved_;
+    selection_moved_ = false;
+    return moved;
+  }
+
+  const gfx::PointF& GetLastCaretPosition() const { return caret_position_; }
+  const gfx::PointF& GetLastSelectionStart() const { return selection_start_; }
+  const gfx::PointF& GetLastSelectionEnd() const { return selection_end_; }
+  SelectionEventType GetLastEventType() const { return last_event_; }
+  const gfx::PointF& GetLastEventAnchor() const { return last_event_anchor_; }
+
+  TouchSelectionController& controller() { return *controller_; }
+
+ private:
+  gfx::PointF last_event_anchor_;
+  gfx::PointF caret_position_;
+  gfx::PointF selection_start_;
+  gfx::PointF selection_end_;
+  SelectionEventType last_event_;
+  bool caret_moved_;
+  bool selection_moved_;
+  bool needs_animate_;
+  bool animation_enabled_;
+  bool dragging_enabled_;
+  scoped_ptr<TouchSelectionController> controller_;
+};
+
+TEST_F(TouchSelectionControllerTest, InsertionBasic) {
+  gfx::RectF insertion_rect(5, 5, 0, 10);
+  bool visible = true;
+
+  // Insertion events are ignored until automatic showing is enabled.
+  ChangeInsertion(insertion_rect, visible);
+  EXPECT_EQ(gfx::PointF(), GetLastEventAnchor());
+  controller().ShowInsertionHandleAutomatically();
+
+  // Insertion events are ignored until the selection region is marked editable.
+  ChangeInsertion(insertion_rect, visible);
+  EXPECT_EQ(gfx::PointF(), GetLastEventAnchor());
+  controller().OnSelectionEditable(true);
+
+  ChangeInsertion(insertion_rect, visible);
+  EXPECT_EQ(INSERTION_SHOWN, GetLastEventType());
+  EXPECT_EQ(insertion_rect.bottom_left(), GetLastEventAnchor());
+
+  insertion_rect.Offset(1, 0);
+  ChangeInsertion(insertion_rect, visible);
+  EXPECT_EQ(INSERTION_MOVED, GetLastEventType());
+  EXPECT_EQ(insertion_rect.bottom_left(), GetLastEventAnchor());
+
+  insertion_rect.Offset(0, 1);
+  ChangeInsertion(insertion_rect, visible);
+  EXPECT_EQ(INSERTION_MOVED, GetLastEventType());
+  EXPECT_EQ(insertion_rect.bottom_left(), GetLastEventAnchor());
+
+  ClearInsertion();
+  EXPECT_EQ(INSERTION_CLEARED, GetLastEventType());
+}
+
+TEST_F(TouchSelectionControllerTest, InsertionClearedWhenNoLongerEditable) {
+  gfx::RectF insertion_rect(5, 5, 0, 10);
+  bool visible = true;
+  controller().ShowInsertionHandleAutomatically();
+  controller().OnSelectionEditable(true);
+
+  ChangeInsertion(insertion_rect, visible);
+  EXPECT_EQ(INSERTION_SHOWN, GetLastEventType());
+  EXPECT_EQ(insertion_rect.bottom_left(), GetLastEventAnchor());
+
+  controller().OnSelectionEditable(false);
+  EXPECT_EQ(INSERTION_CLEARED, GetLastEventType());
+}
+
+TEST_F(TouchSelectionControllerTest, InsertionToSelectionTransition) {
+  controller().ShowSelectionHandlesAutomatically();
+  controller().ShowInsertionHandleAutomatically();
+  controller().OnSelectionEditable(true);
+
+  gfx::RectF anchor_rect(5, 5, 0, 10);
+  gfx::RectF focus_rect(50, 5, 0, 10);
+  bool visible = true;
+
+  ChangeInsertion(anchor_rect, visible);
+  EXPECT_EQ(INSERTION_SHOWN, GetLastEventType());
+  EXPECT_EQ(anchor_rect.bottom_left(), GetLastEventAnchor());
+
+  ChangeSelection(anchor_rect, visible, focus_rect, visible);
+  EXPECT_EQ(SELECTION_SHOWN, GetLastEventType());
+  EXPECT_EQ(anchor_rect.bottom_left(), GetLastEventAnchor());
+
+  ChangeInsertion(focus_rect, visible);
+  EXPECT_EQ(INSERTION_SHOWN, GetLastEventType());
+  EXPECT_EQ(focus_rect.bottom_left(), GetLastEventAnchor());
+
+  controller().HideAndDisallowAutomaticShowing();
+  EXPECT_EQ(INSERTION_CLEARED, GetLastEventType());
+
+  controller().ShowInsertionHandleAutomatically();
+  ChangeInsertion(focus_rect, visible);
+  EXPECT_EQ(INSERTION_SHOWN, GetLastEventType());
+  EXPECT_EQ(focus_rect.bottom_left(), GetLastEventAnchor());
+}
+
+TEST_F(TouchSelectionControllerTest, InsertionDragged) {
+  base::TimeTicks event_time = base::TimeTicks::Now();
+  controller().ShowInsertionHandleAutomatically();
+  controller().OnSelectionEditable(true);
+
+  // The touch sequence should not be handled if insertion is not active.
+  MockMotionEvent event(MockMotionEvent::ACTION_DOWN, event_time, 0, 0);
+  EXPECT_FALSE(controller().WillHandleTouchEvent(event));
+
+  float line_height = 10.f;
+  gfx::RectF anchor_rect(10, 0, 0, line_height);
+  bool visible = true;
+  ChangeInsertion(anchor_rect, visible);
+  EXPECT_EQ(INSERTION_SHOWN, GetLastEventType());
+  EXPECT_EQ(anchor_rect.bottom_left(), GetLastEventAnchor());
+
+  // The touch sequence should be handled only if the drawable reports a hit.
+  EXPECT_FALSE(controller().WillHandleTouchEvent(event));
+  SetDraggingEnabled(true);
+  EXPECT_TRUE(controller().WillHandleTouchEvent(event));
+  EXPECT_FALSE(GetAndResetCaretMoved());
+
+  // The MoveCaret() result should reflect the movement.
+  // The reported position is offset from the center of |anchor_rect|.
+  gfx::PointF anchor_offset = anchor_rect.CenterPoint();
+  event = MockMotionEvent(MockMotionEvent::ACTION_MOVE, event_time, 0, 5);
+  EXPECT_TRUE(controller().WillHandleTouchEvent(event));
+  EXPECT_TRUE(GetAndResetCaretMoved());
+  EXPECT_EQ(anchor_offset + gfx::Vector2dF(0, 5), GetLastCaretPosition());
+
+  event = MockMotionEvent(MockMotionEvent::ACTION_MOVE, event_time, 5, 5);
+  EXPECT_TRUE(controller().WillHandleTouchEvent(event));
+  EXPECT_TRUE(GetAndResetCaretMoved());
+  EXPECT_EQ(anchor_offset + gfx::Vector2dF(5, 5), GetLastCaretPosition());
+
+  event = MockMotionEvent(MockMotionEvent::ACTION_MOVE, event_time, 10, 10);
+  EXPECT_TRUE(controller().WillHandleTouchEvent(event));
+  EXPECT_TRUE(GetAndResetCaretMoved());
+  EXPECT_EQ(anchor_offset + gfx::Vector2dF(10, 10), GetLastCaretPosition());
+
+  event = MockMotionEvent(MockMotionEvent::ACTION_UP, event_time, 10, 5);
+  EXPECT_TRUE(controller().WillHandleTouchEvent(event));
+  EXPECT_FALSE(GetAndResetCaretMoved());
+
+  // Once the drag is complete, no more touch events should be consumed until
+  // the next ACTION_DOWN.
+  EXPECT_FALSE(controller().WillHandleTouchEvent(event));
+}
+
+TEST_F(TouchSelectionControllerTest, InsertionTapped) {
+  base::TimeTicks event_time = base::TimeTicks::Now();
+  controller().ShowInsertionHandleAutomatically();
+  controller().OnSelectionEditable(true);
+  SetDraggingEnabled(true);
+
+  gfx::RectF anchor_rect(10, 0, 0, 10);
+  bool visible = true;
+  ChangeInsertion(anchor_rect, visible);
+  EXPECT_EQ(INSERTION_SHOWN, GetLastEventType());
+
+  MockMotionEvent event(MockMotionEvent::ACTION_DOWN, event_time, 0, 0);
+  EXPECT_TRUE(controller().WillHandleTouchEvent(event));
+  EXPECT_EQ(INSERTION_SHOWN, GetLastEventType());
+
+  event = MockMotionEvent(MockMotionEvent::ACTION_UP, event_time, 0, 0);
+  EXPECT_TRUE(controller().WillHandleTouchEvent(event));
+  EXPECT_EQ(INSERTION_TAPPED, GetLastEventType());
+
+  // Reset the insertion.
+  ClearInsertion();
+  controller().ShowInsertionHandleAutomatically();
+  ChangeInsertion(anchor_rect, visible);
+  ASSERT_EQ(INSERTION_SHOWN, GetLastEventType());
+
+  // No tap should be signalled if the time between DOWN and UP was too long.
+  event = MockMotionEvent(MockMotionEvent::ACTION_DOWN, event_time, 0, 0);
+  EXPECT_TRUE(controller().WillHandleTouchEvent(event));
+  event = MockMotionEvent(MockMotionEvent::ACTION_UP,
+                          event_time + base::TimeDelta::FromSeconds(1),
+                          0,
+                          0);
+  EXPECT_TRUE(controller().WillHandleTouchEvent(event));
+  EXPECT_EQ(INSERTION_SHOWN, GetLastEventType());
+
+  // Reset the insertion.
+  ClearInsertion();
+  controller().ShowInsertionHandleAutomatically();
+  ChangeInsertion(anchor_rect, visible);
+  ASSERT_EQ(INSERTION_SHOWN, GetLastEventType());
+
+  // No tap should be signalled if the touch sequence is cancelled.
+  event = MockMotionEvent(MockMotionEvent::ACTION_DOWN, event_time, 0, 0);
+  EXPECT_TRUE(controller().WillHandleTouchEvent(event));
+  event = MockMotionEvent(MockMotionEvent::ACTION_CANCEL, event_time, 0, 0);
+  EXPECT_TRUE(controller().WillHandleTouchEvent(event));
+  EXPECT_EQ(INSERTION_SHOWN, GetLastEventType());
+}
+
+TEST_F(TouchSelectionControllerTest, SelectionBasic) {
+  gfx::RectF anchor_rect(5, 5, 0, 10);
+  gfx::RectF focus_rect(50, 5, 0, 10);
+  bool visible = true;
+
+  // Selection events are ignored until automatic showing is enabled.
+  ChangeSelection(anchor_rect, visible, focus_rect, visible);
+  EXPECT_EQ(gfx::PointF(), GetLastEventAnchor());
+
+  controller().ShowSelectionHandlesAutomatically();
+  ChangeSelection(anchor_rect, visible, focus_rect, visible);
+  EXPECT_EQ(SELECTION_SHOWN, GetLastEventType());
+  EXPECT_EQ(anchor_rect.bottom_left(), GetLastEventAnchor());
+
+  anchor_rect.Offset(1, 0);
+  ChangeSelection(anchor_rect, visible, focus_rect, visible);
+  // Selection movement does not currently trigger a separate event.
+  EXPECT_EQ(SELECTION_SHOWN, GetLastEventType());
+
+  ClearSelection();
+  EXPECT_EQ(SELECTION_CLEARED, GetLastEventType());
+  EXPECT_EQ(gfx::PointF(), GetLastEventAnchor());
+}
+
+TEST_F(TouchSelectionControllerTest, SelectionDragged) {
+  base::TimeTicks event_time = base::TimeTicks::Now();
+  controller().ShowSelectionHandlesAutomatically();
+
+  // The touch sequence should not be handled if selection is not active.
+  MockMotionEvent event(MockMotionEvent::ACTION_DOWN, event_time, 0, 0);
+  EXPECT_FALSE(controller().WillHandleTouchEvent(event));
+
+  float line_height = 10.f;
+  gfx::RectF anchor_rect(0, 0, 0, line_height);
+  gfx::RectF focus_rect(50, 0, 0, line_height);
+  bool visible = true;
+  ChangeSelection(anchor_rect, visible, focus_rect, visible);
+  EXPECT_EQ(SELECTION_SHOWN, GetLastEventType());
+  EXPECT_EQ(anchor_rect.bottom_left(), GetLastEventAnchor());
+
+  // The touch sequence should be handled only if the drawable reports a hit.
+  EXPECT_FALSE(controller().WillHandleTouchEvent(event));
+  SetDraggingEnabled(true);
+  EXPECT_TRUE(controller().WillHandleTouchEvent(event));
+  EXPECT_FALSE(GetAndResetSelectionMoved());
+
+  // The SelectBetweenCoordinates() result should reflect the movement. Note
+  // that the start coordinate will always reflect the "fixed" handle's
+  // position, in this case the position from |focus_rect|.
+  // Note that the reported position is offset from the center of the
+  // input rects (i.e., the middle of the corresponding text line).
+  gfx::PointF fixed_offset = focus_rect.CenterPoint();
+  gfx::PointF anchor_offset = anchor_rect.CenterPoint();
+  event = MockMotionEvent(MockMotionEvent::ACTION_MOVE, event_time, 0, 5);
+  EXPECT_TRUE(controller().WillHandleTouchEvent(event));
+  EXPECT_TRUE(GetAndResetSelectionMoved());
+  EXPECT_EQ(fixed_offset, GetLastSelectionStart());
+  EXPECT_EQ(anchor_offset + gfx::Vector2dF(0, 5), GetLastSelectionEnd());
+
+  event = MockMotionEvent(MockMotionEvent::ACTION_MOVE, event_time, 5, 5);
+  EXPECT_TRUE(controller().WillHandleTouchEvent(event));
+  EXPECT_TRUE(GetAndResetSelectionMoved());
+  EXPECT_EQ(fixed_offset, GetLastSelectionStart());
+  EXPECT_EQ(anchor_offset + gfx::Vector2dF(5, 5), GetLastSelectionEnd());
+
+  event = MockMotionEvent(MockMotionEvent::ACTION_MOVE, event_time, 10, 5);
+  EXPECT_TRUE(controller().WillHandleTouchEvent(event));
+  EXPECT_TRUE(GetAndResetSelectionMoved());
+  EXPECT_EQ(fixed_offset, GetLastSelectionStart());
+  EXPECT_EQ(anchor_offset + gfx::Vector2dF(10, 5), GetLastSelectionEnd());
+
+  event = MockMotionEvent(MockMotionEvent::ACTION_UP, event_time, 10, 5);
+  EXPECT_TRUE(controller().WillHandleTouchEvent(event));
+  EXPECT_FALSE(GetAndResetSelectionMoved());
+
+  // Once the drag is complete, no more touch events should be consumed until
+  // the next ACTION_DOWN.
+  EXPECT_FALSE(controller().WillHandleTouchEvent(event));
+}
+
+TEST_F(TouchSelectionControllerTest, Animation) {
+  controller().ShowInsertionHandleAutomatically();
+  controller().OnSelectionEditable(true);
+
+  gfx::RectF insertion_rect(5, 5, 0, 10);
+
+  bool visible = true;
+  ChangeInsertion(insertion_rect, visible);
+  EXPECT_FALSE(GetAndResetNeedsAnimate());
+
+  visible = false;
+  ChangeInsertion(insertion_rect, visible);
+  EXPECT_TRUE(GetAndResetNeedsAnimate());
+
+  visible = true;
+  ChangeInsertion(insertion_rect, visible);
+  EXPECT_TRUE(GetAndResetNeedsAnimate());
+
+  // If the handles are explicity hidden, no animation should be triggered.
+  controller().HideAndDisallowAutomaticShowing();
+  EXPECT_FALSE(GetAndResetNeedsAnimate());
+
+  // If the client doesn't support animation, no animation should be triggered.
+  SetAnimationEnabled(false);
+  controller().ShowInsertionHandleAutomatically();
+  visible = true;
+  ChangeInsertion(insertion_rect, visible);
+  EXPECT_FALSE(GetAndResetNeedsAnimate());
+}
+
+}  // namespace content