Move content/renderer input handling for web input events to ui

content/renderer/input/input_scroll_elasticity_controller_unittest.cc

Index: content/renderer/input/input_scroll_elasticity_controller_unittest.cc
diff --git a/content/renderer/input/input_scroll_elasticity_controller_unittest.cc b/content/renderer/input/input_scroll_elasticity_controller_unittest.cc
deleted file mode 100644
index fa2c7f19bee3ef3fcdf0d5cf69453647c09a28b4..0000000000000000000000000000000000000000
--- a/content/renderer/input/input_scroll_elasticity_controller_unittest.cc
+++ /dev/null
@@ -1,387 +0,0 @@
-// 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 "cc/input/input_handler.h"
-#include "content/renderer/input/input_scroll_elasticity_controller.h"
-#include "testing/gtest/include/gtest/gtest.h"
-#include "third_party/WebKit/public/web/WebInputEvent.h"
-
-namespace content {
-namespace {
-
-enum Phase {
-  PhaseNone = blink::WebMouseWheelEvent::PhaseNone,
-  PhaseBegan = blink::WebMouseWheelEvent::PhaseBegan,
-  PhaseStationary = blink::WebMouseWheelEvent::PhaseStationary,
-  PhaseChanged = blink::WebMouseWheelEvent::PhaseChanged,
-  PhaseEnded = blink::WebMouseWheelEvent::PhaseEnded,
-  PhaseCancelled = blink::WebMouseWheelEvent::PhaseCancelled,
-  PhaseMayBegin = blink::WebMouseWheelEvent::PhaseMayBegin,
-};
-
-class MockScrollElasticityHelper : public cc::ScrollElasticityHelper {
- public:
-  MockScrollElasticityHelper()
-      : is_user_scrollable_(true),
-        set_stretch_amount_count_(0),
-        request_animate_count_(0) {}
-  ~MockScrollElasticityHelper() override {}
-
-  // cc::ScrollElasticityHelper implementation:
-  bool IsUserScrollable() const override { return is_user_scrollable_; }
-  gfx::Vector2dF StretchAmount() const override { return stretch_amount_; }
-  void SetStretchAmount(const gfx::Vector2dF& stretch_amount) override {
-    set_stretch_amount_count_ += 1;
-    stretch_amount_ = stretch_amount;
-  }
-  gfx::ScrollOffset ScrollOffset() const override { return scroll_offset_; }
-  gfx::ScrollOffset MaxScrollOffset() const override {
-    return max_scroll_offset_;
-  }
-  void ScrollBy(const gfx::Vector2dF& delta) override {
-    scroll_offset_ += gfx::ScrollOffset(delta);
-  }
-  void RequestAnimate() override { request_animate_count_ += 1; }
-
-  // Counters for number of times functions were called.
-  int request_animate_count() const { return request_animate_count_; }
-  int set_stretch_amount_count() const { return set_stretch_amount_count_; }
-
-  void SetScrollOffsetAndMaxScrollOffset(
-      const gfx::ScrollOffset& scroll_offset,
-      const gfx::ScrollOffset& max_scroll_offset) {
-    scroll_offset_ = scroll_offset;
-    max_scroll_offset_ = max_scroll_offset;
-  }
-  void SetUserScrollable(bool is_user_scrollable) {
-    is_user_scrollable_ = is_user_scrollable;
-  }
-
- private:
-  bool is_user_scrollable_;
-  gfx::Vector2dF stretch_amount_;
-  int set_stretch_amount_count_;
-  int request_animate_count_;
-
-  gfx::ScrollOffset scroll_offset_;
-  gfx::ScrollOffset max_scroll_offset_;
-};
-
-class ScrollElasticityControllerTest : public testing::Test {
- public:
-  ScrollElasticityControllerTest()
-      : controller_(&helper_),
-        input_event_count_(0),
-        current_time_(base::TimeTicks::FromInternalValue(100000000ull)) {}
-  ~ScrollElasticityControllerTest() override {}
-
-  void SendMouseWheelEvent(
-      Phase phase,
-      Phase momentum_phase,
-      const gfx::Vector2dF& event_delta = gfx::Vector2dF(),
-      const gfx::Vector2dF& overscroll_delta = gfx::Vector2dF()) {
-    blink::WebMouseWheelEvent event;
-    event.phase = static_cast<blink::WebMouseWheelEvent::Phase>(phase);
-    event.momentumPhase =
-        static_cast<blink::WebMouseWheelEvent::Phase>(momentum_phase);
-    event.deltaX = -event_delta.x();
-    event.deltaY = -event_delta.y();
-    TickCurrentTime();
-    event.timeStampSeconds = (current_time_ - base::TimeTicks()).InSecondsF();
-
-    cc::InputHandlerScrollResult scroll_result;
-    scroll_result.did_overscroll_root = !overscroll_delta.IsZero();
-    scroll_result.unused_scroll_delta = overscroll_delta;
-
-    controller_.ObserveWheelEventAndResult(event, scroll_result);
-    input_event_count_ += 1;
-  }
-
-  const base::TimeTicks& TickCurrentTime() {
-    current_time_ += base::TimeDelta::FromSecondsD(1 / 60.f);
-    return current_time_;
-  }
-  void TickCurrentTimeAndAnimate() {
-    TickCurrentTime();
-    controller_.Animate(current_time_);
-  }
-
-  MockScrollElasticityHelper helper_;
-  InputScrollElasticityController controller_;
-  int input_event_count_;
-  base::TimeTicks current_time_;
-};
-
-// Verify that stretching only occurs in one axis at a time, and that it
-// is biased to the Y axis.
-TEST_F(ScrollElasticityControllerTest, Axis) {
-  helper_.SetScrollOffsetAndMaxScrollOffset(gfx::ScrollOffset(0, 0),
-                                            gfx::ScrollOffset(0, 0));
-
-  // If we push equally in the X and Y directions, we should see a stretch only
-  // in the Y direction.
-  SendMouseWheelEvent(PhaseBegan, PhaseNone);
-  SendMouseWheelEvent(PhaseChanged, PhaseNone, gfx::Vector2dF(10, 10),
-                      gfx::Vector2dF(10, 10));
-  EXPECT_EQ(1, helper_.set_stretch_amount_count());
-  EXPECT_EQ(0.f, helper_.StretchAmount().x());
-  EXPECT_LT(0.f, helper_.StretchAmount().y());
-  helper_.SetStretchAmount(gfx::Vector2dF());
-  EXPECT_EQ(2, helper_.set_stretch_amount_count());
-  SendMouseWheelEvent(PhaseEnded, PhaseNone);
-  EXPECT_EQ(0, helper_.request_animate_count());
-
-  // If we push more in the X direction than the Y direction, we should see a
-  // stretch only in the X direction. This decision should be based on the
-  // input delta, not the actual overscroll delta.
-  SendMouseWheelEvent(PhaseBegan, PhaseNone);
-  SendMouseWheelEvent(PhaseChanged, PhaseNone, gfx::Vector2dF(-25, 10),
-                      gfx::Vector2dF(-25, 40));
-  EXPECT_EQ(3, helper_.set_stretch_amount_count());
-  EXPECT_GT(0.f, helper_.StretchAmount().x());
-  EXPECT_EQ(0.f, helper_.StretchAmount().y());
-  helper_.SetStretchAmount(gfx::Vector2dF());
-  EXPECT_EQ(4, helper_.set_stretch_amount_count());
-  SendMouseWheelEvent(PhaseEnded, PhaseNone);
-  EXPECT_EQ(0, helper_.request_animate_count());
-}
-
-// Verify that we need a total overscroll delta of at least 10 in a pinned
-// direction before we start stretching.
-TEST_F(ScrollElasticityControllerTest, MinimumDeltaBeforeStretch) {
-  // We should not start stretching while we are not pinned in the direction
-  // of the scroll (even if there is an overscroll delta). We have to wait for
-  // the regular scroll to eat all of the events.
-  helper_.SetScrollOffsetAndMaxScrollOffset(gfx::ScrollOffset(5, 5),
-                                            gfx::ScrollOffset(10, 10));
-  SendMouseWheelEvent(PhaseMayBegin, PhaseNone);
-  SendMouseWheelEvent(PhaseBegan, PhaseNone);
-  SendMouseWheelEvent(PhaseChanged, PhaseNone, gfx::Vector2dF(0, 10),
-                      gfx::Vector2dF(0, 10));
-  SendMouseWheelEvent(PhaseChanged, PhaseNone, gfx::Vector2dF(0, 10),
-                      gfx::Vector2dF(0, 10));
-  EXPECT_EQ(0, helper_.set_stretch_amount_count());
-
-  // Now pin the -X and +Y direction. The first event will not generate a
-  // stretch
-  // because it is below the delta threshold of 10.
-  helper_.SetScrollOffsetAndMaxScrollOffset(gfx::ScrollOffset(0, 10),
-                                            gfx::ScrollOffset(10, 10));
-  SendMouseWheelEvent(PhaseChanged, PhaseNone, gfx::Vector2dF(0, 10),
-                      gfx::Vector2dF(0, 8));
-  EXPECT_EQ(0, helper_.set_stretch_amount_count());
-
-  // Make the next scroll be in the -X direction more than the +Y direction,
-  // which will erase the memory of the previous unused delta of 8.
-  SendMouseWheelEvent(PhaseChanged, PhaseNone, gfx::Vector2dF(-10, 5),
-                      gfx::Vector2dF(-8, 10));
-  EXPECT_EQ(0, helper_.set_stretch_amount_count());
-
-  // Now push against the pinned +Y direction again by 8. We reset the
-  // previous delta, so this will not generate a stretch.
-  SendMouseWheelEvent(PhaseChanged, PhaseNone, gfx::Vector2dF(0, 10),
-                      gfx::Vector2dF(0, 8));
-  EXPECT_EQ(0, helper_.set_stretch_amount_count());
-
-  // Push against +Y by another 8. This gets us above the delta threshold of
-  // 10, so we should now have had the stretch set, and it should be in the
-  // +Y direction. The scroll in the -X direction should have been forgotten.
-  SendMouseWheelEvent(PhaseChanged, PhaseNone, gfx::Vector2dF(0, 10),
-                      gfx::Vector2dF(0, 8));
-  EXPECT_EQ(1, helper_.set_stretch_amount_count());
-  EXPECT_EQ(0.f, helper_.StretchAmount().x());
-  EXPECT_LT(0.f, helper_.StretchAmount().y());
-
-  // End the gesture. Because there is a non-zero stretch, we should be in the
-  // animated state, and should have had a frame requested.
-  EXPECT_EQ(0, helper_.request_animate_count());
-  SendMouseWheelEvent(PhaseEnded, PhaseNone);
-  EXPECT_EQ(1, helper_.request_animate_count());
-}
-
-// Verify that an stretch caused by a momentum scroll will switch to the
-// animating mode, where input events are ignored, and the stretch is updated
-// while animating.
-TEST_F(ScrollElasticityControllerTest, MomentumAnimate) {
-  // Do an active scroll, then switch to the momentum phase and scroll for a
-  // bit.
-  helper_.SetScrollOffsetAndMaxScrollOffset(gfx::ScrollOffset(5, 5),
-                                            gfx::ScrollOffset(10, 10));
-  SendMouseWheelEvent(PhaseBegan, PhaseNone);
-  SendMouseWheelEvent(PhaseChanged, PhaseNone, gfx::Vector2dF(0, -80),
-                      gfx::Vector2dF(0, 0));
-  SendMouseWheelEvent(PhaseChanged, PhaseNone, gfx::Vector2dF(0, -80),
-                      gfx::Vector2dF(0, 0));
-  SendMouseWheelEvent(PhaseChanged, PhaseNone, gfx::Vector2dF(0, -80),
-                      gfx::Vector2dF(0, 0));
-  SendMouseWheelEvent(PhaseEnded, PhaseNone);
-  SendMouseWheelEvent(PhaseNone, PhaseBegan);
-  SendMouseWheelEvent(PhaseNone, PhaseChanged, gfx::Vector2dF(0, -80),
-                      gfx::Vector2dF(0, 0));
-  SendMouseWheelEvent(PhaseNone, PhaseChanged, gfx::Vector2dF(0, -80),
-                      gfx::Vector2dF(0, 0));
-  SendMouseWheelEvent(PhaseNone, PhaseChanged, gfx::Vector2dF(0, -80),
-                      gfx::Vector2dF(0, 0));
-  EXPECT_EQ(0, helper_.set_stretch_amount_count());
-
-  // Hit the -Y edge and overscroll slightly, but not enough to go over the
-  // threshold to cause a stretch.
-  helper_.SetScrollOffsetAndMaxScrollOffset(gfx::ScrollOffset(5, 0),
-                                            gfx::ScrollOffset(10, 10));
-  SendMouseWheelEvent(PhaseNone, PhaseChanged, gfx::Vector2dF(0, -80),
-                      gfx::Vector2dF(0, -8));
-  EXPECT_EQ(0, helper_.set_stretch_amount_count());
-  EXPECT_EQ(0, helper_.request_animate_count());
-
-  // Take another step, this time going over the threshold. This should update
-  // the stretch amount, and then switch to the animating mode.
-  SendMouseWheelEvent(PhaseNone, PhaseChanged, gfx::Vector2dF(0, -80),
-                      gfx::Vector2dF(0, -80));
-  EXPECT_EQ(1, helper_.set_stretch_amount_count());
-  EXPECT_EQ(1, helper_.request_animate_count());
-  EXPECT_GT(-1.f, helper_.StretchAmount().y());
-
-  // Subsequent momentum events should do nothing.
-  SendMouseWheelEvent(PhaseNone, PhaseChanged, gfx::Vector2dF(0, -80),
-                      gfx::Vector2dF(0, -80));
-  SendMouseWheelEvent(PhaseNone, PhaseChanged, gfx::Vector2dF(0, -80),
-                      gfx::Vector2dF(0, -80));
-  SendMouseWheelEvent(PhaseNone, PhaseEnded, gfx::Vector2dF(0, -80),
-                      gfx::Vector2dF(0, -80));
-  EXPECT_EQ(1, helper_.set_stretch_amount_count());
-  EXPECT_EQ(1, helper_.request_animate_count());
-
-  // Subsequent animate events should update the stretch amount and request
-  // another frame.
-  TickCurrentTimeAndAnimate();
-  EXPECT_EQ(2, helper_.set_stretch_amount_count());
-  EXPECT_EQ(2, helper_.request_animate_count());
-  EXPECT_GT(-1.f, helper_.StretchAmount().y());
-
-  // Touching the trackpad (a PhaseMayBegin event) should disable animation.
-  SendMouseWheelEvent(PhaseMayBegin, PhaseNone);
-  TickCurrentTimeAndAnimate();
-  EXPECT_EQ(2, helper_.set_stretch_amount_count());
-  EXPECT_EQ(2, helper_.request_animate_count());
-
-  // Releasing the trackpad should re-enable animation.
-  SendMouseWheelEvent(PhaseCancelled, PhaseNone);
-  EXPECT_EQ(2, helper_.set_stretch_amount_count());
-  EXPECT_EQ(3, helper_.request_animate_count());
-  TickCurrentTimeAndAnimate();
-  EXPECT_EQ(3, helper_.set_stretch_amount_count());
-  EXPECT_EQ(4, helper_.request_animate_count());
-
-  // Keep animating frames until the stretch returns to rest.
-  int stretch_count = 3;
-  int animate_count = 4;
-  while (1) {
-    TickCurrentTimeAndAnimate();
-    if (helper_.StretchAmount().IsZero()) {
-      stretch_count += 1;
-      EXPECT_EQ(stretch_count, helper_.set_stretch_amount_count());
-      EXPECT_EQ(animate_count, helper_.request_animate_count());
-      break;
-    }
-    stretch_count += 1;
-    animate_count += 1;
-    EXPECT_EQ(stretch_count, helper_.set_stretch_amount_count());
-    EXPECT_EQ(animate_count, helper_.request_animate_count());
-  }
-
-  // After coming to rest, no subsequent animate calls change anything.
-  TickCurrentTimeAndAnimate();
-  EXPECT_EQ(stretch_count, helper_.set_stretch_amount_count());
-  EXPECT_EQ(animate_count, helper_.request_animate_count());
-}
-
-// Verify that an stretch opposing a scroll is correctly resolved.
-TEST_F(ScrollElasticityControllerTest, ReconcileStretchAndScroll) {
-  SendMouseWheelEvent(PhaseBegan, PhaseNone);
-
-  // Verify completely knocking out the scroll in the -Y direction.
-  helper_.SetScrollOffsetAndMaxScrollOffset(gfx::ScrollOffset(5, 5),
-                                            gfx::ScrollOffset(10, 10));
-  helper_.SetStretchAmount(gfx::Vector2dF(0, -10));
-  controller_.ReconcileStretchAndScroll();
-  EXPECT_EQ(helper_.StretchAmount(), gfx::Vector2dF(0, -5));
-  EXPECT_EQ(helper_.ScrollOffset(), gfx::ScrollOffset(5, 0));
-
-  // Verify partially knocking out the scroll in the -Y direction.
-  helper_.SetScrollOffsetAndMaxScrollOffset(gfx::ScrollOffset(5, 8),
-                                            gfx::ScrollOffset(10, 10));
-  helper_.SetStretchAmount(gfx::Vector2dF(0, -5));
-  controller_.ReconcileStretchAndScroll();
-  EXPECT_EQ(helper_.StretchAmount(), gfx::Vector2dF(0, 0));
-  EXPECT_EQ(helper_.ScrollOffset(), gfx::ScrollOffset(5, 3));
-
-  // Verify completely knocking out the scroll in the +X direction.
-  helper_.SetScrollOffsetAndMaxScrollOffset(gfx::ScrollOffset(5, 5),
-                                            gfx::ScrollOffset(10, 10));
-  helper_.SetStretchAmount(gfx::Vector2dF(10, 0));
-  controller_.ReconcileStretchAndScroll();
-  EXPECT_EQ(helper_.StretchAmount(), gfx::Vector2dF(5, 0));
-  EXPECT_EQ(helper_.ScrollOffset(), gfx::ScrollOffset(10, 5));
-
-  // Verify partially knocking out the scroll in the +X and +Y directions.
-  helper_.SetScrollOffsetAndMaxScrollOffset(gfx::ScrollOffset(2, 3),
-                                            gfx::ScrollOffset(10, 10));
-  helper_.SetStretchAmount(gfx::Vector2dF(5, 5));
-  controller_.ReconcileStretchAndScroll();
-  EXPECT_EQ(helper_.StretchAmount(), gfx::Vector2dF(0, 0));
-  EXPECT_EQ(helper_.ScrollOffset(), gfx::ScrollOffset(7, 8));
-}
-
-// Verify that stretching only happens when the area is user scrollable.
-TEST_F(ScrollElasticityControllerTest, UserScrollableRequiredForStretch) {
-  helper_.SetScrollOffsetAndMaxScrollOffset(gfx::ScrollOffset(0, 0),
-                                            gfx::ScrollOffset(10, 10));
-  gfx::Vector2dF delta(0, -15);
-
-  // Do an active scroll, and ensure that the stretch amount doesn't change,
-  // and also that the stretch amount isn't even ever changed.
-  helper_.SetUserScrollable(false);
-  SendMouseWheelEvent(PhaseBegan, PhaseNone);
-  SendMouseWheelEvent(PhaseChanged, PhaseNone, delta, delta);
-  SendMouseWheelEvent(PhaseChanged, PhaseNone, delta, delta);
-  SendMouseWheelEvent(PhaseEnded, PhaseNone);
-  EXPECT_EQ(helper_.StretchAmount(), gfx::Vector2dF(0, 0));
-  EXPECT_EQ(0, helper_.set_stretch_amount_count());
-  SendMouseWheelEvent(PhaseNone, PhaseBegan);
-  SendMouseWheelEvent(PhaseNone, PhaseChanged, delta, delta);
-  SendMouseWheelEvent(PhaseNone, PhaseChanged, delta, delta);
-  SendMouseWheelEvent(PhaseNone, PhaseEnded);
-  EXPECT_EQ(helper_.StretchAmount(), gfx::Vector2dF(0, 0));
-  EXPECT_EQ(0, helper_.set_stretch_amount_count());
-
-  // Re-enable user scrolling and ensure that stretching is re-enabled.
-  helper_.SetUserScrollable(true);
-  SendMouseWheelEvent(PhaseBegan, PhaseNone);
-  SendMouseWheelEvent(PhaseChanged, PhaseNone, delta, delta);
-  SendMouseWheelEvent(PhaseChanged, PhaseNone, delta, delta);
-  SendMouseWheelEvent(PhaseEnded, PhaseNone);
-  EXPECT_NE(helper_.StretchAmount(), gfx::Vector2dF(0, 0));
-  EXPECT_GT(helper_.set_stretch_amount_count(), 0);
-  SendMouseWheelEvent(PhaseNone, PhaseBegan);
-  SendMouseWheelEvent(PhaseNone, PhaseChanged, delta, delta);
-  SendMouseWheelEvent(PhaseNone, PhaseChanged, delta, delta);
-  SendMouseWheelEvent(PhaseNone, PhaseEnded);
-  EXPECT_NE(helper_.StretchAmount(), gfx::Vector2dF(0, 0));
-  EXPECT_GT(helper_.set_stretch_amount_count(), 0);
-
-  // Disable user scrolling and tick the timer until the stretch goes back
-  // to zero. Ensure that the return to zero doesn't happen immediately.
-  helper_.SetUserScrollable(false);
-  int ticks_to_zero = 0;
-  while (1) {
-    TickCurrentTimeAndAnimate();
-    if (helper_.StretchAmount().IsZero())
-      break;
-    ticks_to_zero += 1;
-  }
-  EXPECT_GT(ticks_to_zero, 3);
-}
-
-}  // namespace
-}  // namespace content