[Android] Select text when stylus first button is pressed.

content/browser/renderer_host/input/gesture_text_selector_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 <string>
+#include <vector>
+
+#include "base/memory/scoped_ptr.h"
+#include "base/time/time.h"
+#include "content/browser/renderer_host/input/gesture_text_selector.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/events/event_constants.h"
+#include "ui/events/gesture_detection/gesture_event_data.h"
+#include "ui/events/gesture_detection/motion_event.h"
+#include "ui/events/test/mock_motion_event.h"
+#include "ui/gfx/geometry/rect_f.h"
+
+using ui::GestureEventData;
+using ui::GestureEventDetails;
+using ui::MotionEvent;
+using ui::test::MockMotionEvent;
+
+namespace content {
+
+class GestureTextSelectorTest : public testing::Test,
+                                public GestureTextSelectorClient {
+ public:
+  GestureTextSelectorTest() {}
+  virtual ~GestureTextSelectorTest() {}
+
+  // Test implementation.
+  virtual void SetUp() OVERRIDE {
+    selector_.reset(new GestureTextSelector(this));
+    event_log_.clear();
+  }
+
+  virtual void TearDown() OVERRIDE {
+    selector_.reset();
+    event_log_.clear();
+  }
+
+  // GestureTextSelectorClient implementation.
+  virtual void ShowSelectionHandlesAutomatically() OVERRIDE {
+    event_log_.push_back("Show");
+  }
+
+  virtual void SelectRange(float x1, float y1, float x2, float y2) OVERRIDE {
+    event_log_.push_back("SelectRange");
+  }
+
+  virtual void Unselect() OVERRIDE {
+    event_log_.push_back("Unselect");
+  }
+
+ protected:
+  scoped_ptr<GestureTextSelector> selector_;
+  std::vector<std::string> event_log_;
+};
+
+TEST_F(GestureTextSelectorTest, ShouldStartTextSelection) {
+  base::TimeTicks event_time = base::TimeTicks::Now();
+  {  // Touched with a finger.
+    MockMotionEvent e(MotionEvent::ACTION_DOWN, event_time, 50.0f, 50.0f);
+    e.SetToolType(0, MotionEvent::TOOL_TYPE_FINGER);
+    e.SetButtonState(0);
+    EXPECT_FALSE(selector_->ShouldStartTextSelection(e));
+  }
+
+  {  // Touched with a stylus, but no button pressed.
+    MockMotionEvent e(MotionEvent::ACTION_DOWN, event_time, 50.0f, 50.0f);
+    e.SetToolType(0, MotionEvent::TOOL_TYPE_STYLUS);
+    e.SetButtonState(0);
+    EXPECT_FALSE(selector_->ShouldStartTextSelection(e));
+  }
+
+  {  // Touched with a stylus, with first button (BUTTON_SECONDARY) pressed.
+    MockMotionEvent e(MotionEvent::ACTION_DOWN, event_time, 50.0f, 50.0f);
+    e.SetToolType(0, MotionEvent::TOOL_TYPE_STYLUS);
+    e.SetButtonState(MotionEvent::BUTTON_SECONDARY);
+    EXPECT_TRUE(selector_->ShouldStartTextSelection(e));
+  }
+
+  {  // Touched with a stylus, with two buttons pressed.
+    MockMotionEvent e(MotionEvent::ACTION_DOWN, event_time, 50.0f, 50.0f);
+    e.SetToolType(0, MotionEvent::TOOL_TYPE_STYLUS);
+    e.SetButtonState(
+        MotionEvent::BUTTON_SECONDARY | MotionEvent::BUTTON_TERTIARY);
+    EXPECT_FALSE(selector_->ShouldStartTextSelection(e));
+  }
+}
+
+TEST_F(GestureTextSelectorTest, EventConsumption) {
+  base::TimeTicks event_time = base::TimeTicks::Now();
+  const float x1 = 50.0f;
+  const float y1 = 30.0f;
+  const float x2 = 100.0f;
+  const float y2 = 90.0f;
+  // 0. Touched with a finger: ignored
+  MockMotionEvent finger(MotionEvent::ACTION_DOWN, event_time, x1, y1);
+  finger.SetToolType(0, MotionEvent::TOOL_TYPE_FINGER);
+  EXPECT_FALSE(selector_->OnTouchEvent(finger));
+  // We do not consume finger events.
+  EXPECT_TRUE(event_log_.empty());
+
+  // 1. ACTION_DOWN with stylus + button
+  event_time += base::TimeDelta::FromMilliseconds(10);
+  MockMotionEvent action_down(MotionEvent::ACTION_DOWN, event_time, x1, y1);
+  action_down.SetToolType(0, MotionEvent::TOOL_TYPE_STYLUS);
+  action_down.SetButtonState(MotionEvent::BUTTON_SECONDARY);
+  EXPECT_TRUE(selector_->OnTouchEvent(action_down));
+  EXPECT_TRUE(event_log_.empty());
+
+  // 2. ACTION_MOVE
+  event_time += base::TimeDelta::FromMilliseconds(10);
+  MockMotionEvent action_move(MotionEvent::ACTION_MOVE, event_time, x2, y2);
+  action_move.SetToolType(0, MotionEvent::TOOL_TYPE_STYLUS);
+  action_move.SetButtonState(MotionEvent::BUTTON_SECONDARY);
+  EXPECT_TRUE(selector_->OnTouchEvent(action_move));
+  EXPECT_TRUE(event_log_.empty());
+
+  // 3. DOUBLE TAP
+  // Suppress most gesture events when in text selection mode.
+  event_time += base::TimeDelta::FromMilliseconds(10);
+  const GestureEventData double_tap(
+      GestureEventDetails(ui::ET_GESTURE_DOUBLE_TAP, 0, 0), 0, event_time,
+      x2, y2, x2, y2, 1, gfx::RectF(0, 0, 0, 0));
+  EXPECT_TRUE(selector_->OnGestureEvent(double_tap));
+  EXPECT_TRUE(event_log_.empty());
+
+  // 4. ET_GESTURE_SCROLL_BEGIN
+  event_time += base::TimeDelta::FromMilliseconds(10);
+  const GestureEventData scroll_begin(
+      GestureEventDetails(ui::ET_GESTURE_SCROLL_BEGIN, 0, 0), 0, event_time,
+      x1, y1, x1, y1, 1, gfx::RectF(0, 0, 0, 0));
+  EXPECT_TRUE(selector_->OnGestureEvent(scroll_begin));
+  EXPECT_EQ(2u, event_log_.size());  // Unselect, Show
+  EXPECT_STREQ("Show", event_log_.back().c_str());
+
+  // 5. ET_GESTURE_SCROLL_UPDATE
+  event_time += base::TimeDelta::FromMilliseconds(10);
+  const GestureEventData scroll_update(
+      GestureEventDetails(ui::ET_GESTURE_SCROLL_UPDATE, 0, 0), 0, event_time,
+      x2, y2, x2, y2, 1, gfx::RectF(0, 0, 0, 0));
+  EXPECT_TRUE(selector_->OnGestureEvent(scroll_update));
+  EXPECT_EQ(3u, event_log_.size());  // Unselect, Show, SelectRange
+  EXPECT_STREQ("SelectRange", event_log_.back().c_str());
+
+  // 6. ACTION_UP
+  event_time += base::TimeDelta::FromMilliseconds(10);
+  MockMotionEvent action_up(MotionEvent::ACTION_UP, event_time, x2, y2);
+  action_up.SetToolType(0, MotionEvent::TOOL_TYPE_STYLUS);
+  action_up.SetButtonState(0);
+  EXPECT_TRUE(selector_->OnTouchEvent(action_up));
+  EXPECT_EQ(3u, event_log_.size());  // NO CHANGE
+
+  // 7. ET_GESTURE_SCROLL_END
+  event_time += base::TimeDelta::FromMilliseconds(10);
+  const GestureEventData scroll_end(
+      GestureEventDetails(ui::ET_GESTURE_SCROLL_END, 0, 0), 0, event_time,
+      x2, y2, x2, y2, 1, gfx::RectF(0, 0, 0, 0));
+  EXPECT_TRUE(selector_->OnGestureEvent(scroll_end));
+  EXPECT_EQ(3u, event_log_.size());  // NO CHANGE
+}
+
+}  // namespace content