// Copyright 2017 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 "ui/keyboard/container_floating_behavior.h"

#include "testing/gtest/include/gtest/gtest.h"
#include "ui/gfx/geometry/point.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/geometry/vector2d.h"

namespace keyboard {

class ContainerFloatingBehaviorTest : public testing::Test {
 public:
  ContainerFloatingBehaviorTest() {}
  ~ContainerFloatingBehaviorTest() override {}
};

TEST(ContainerFloatingBehaviorTest, AdjustSetBoundsRequest) {
  ContainerFloatingBehavior floating_behavior(nullptr);

  const int keyboard_width = 600;
  const int keyboard_height = 70;

  gfx::Rect workspace(0, 0, 1000, 600);
  gfx::Rect center(100, 100, keyboard_width, keyboard_height);
  gfx::Rect top_left_overlap(-30, -30, keyboard_width, keyboard_height);
  gfx::Rect bottom_right_overlap(workspace.width() - 30,
                                 workspace.height() - 30, keyboard_width,
                                 keyboard_height);

  // Save an arbitrary position so that default location will not be used.
  floating_behavior.SavePosition(
      gfx::Rect(0, 0, keyboard_width, keyboard_height), workspace.size());

  gfx::Rect result =
      floating_behavior.AdjustSetBoundsRequest(workspace, center);
  ASSERT_EQ(center, result);
  result =
      floating_behavior.AdjustSetBoundsRequest(workspace, top_left_overlap);
  ASSERT_EQ(gfx::Rect(0, 0, keyboard_width, keyboard_height), result);

  result =
      floating_behavior.AdjustSetBoundsRequest(workspace, bottom_right_overlap);
  ASSERT_EQ(gfx::Rect(workspace.width() - keyboard_width,
                      workspace.height() - keyboard_height, keyboard_width,
                      keyboard_height),
            result);

  // Try to move the keyboard to the center of the primary display while it's
  // in a secondary display.
  gfx::Rect secondary_display(1000, -200, 1200, 800);
  result = floating_behavior.AdjustSetBoundsRequest(secondary_display, center);
  // It gets clipped to the far left of this display
  ASSERT_EQ(gfx::Rect(1000, 100, keyboard_width, keyboard_height), result);
}

TEST(ContainerFloatingBehaviorTest, AdjustSetBoundsRequestVariousSides) {
  ContainerFloatingBehavior floating_behavior(nullptr);

  const int keyboard_width = 100;
  const int keyboard_height = 100;
  gfx::Size keyboard_size = gfx::Size(keyboard_width, keyboard_height);
  gfx::Rect workspace_wide(0, 0, 1000, 500);
  gfx::Rect workspace_tall(0, 0, 500, 1000);
  gfx::Rect top_left(0, 0, keyboard_width, keyboard_height);
  gfx::Rect top_right(900, 0, keyboard_width, keyboard_height);
  gfx::Rect bottom_left(0, 400, keyboard_width, keyboard_height);
  gfx::Rect bottom_right(900, 400, keyboard_width, keyboard_height);
  gfx::Rect bottomish_center(450, 390, keyboard_width, keyboard_height);

  // Save an arbitrary position so that default location will not be used.
  floating_behavior.SavePosition(
      gfx::Rect(0, 0, keyboard_width, keyboard_height), workspace_wide.size());

  floating_behavior.AdjustSetBoundsRequest(workspace_wide, top_left);
  gfx::Point result = floating_behavior.GetPositionForShowingKeyboard(
      keyboard_size, workspace_wide);
  ASSERT_EQ(gfx::Point(0, 0), result);
  result = floating_behavior.GetPositionForShowingKeyboard(keyboard_size,
                                                           workspace_tall);
  ASSERT_EQ(gfx::Point(0, 0), result);

  floating_behavior.AdjustSetBoundsRequest(workspace_wide, top_right);
  result = floating_behavior.GetPositionForShowingKeyboard(keyboard_size,
                                                           workspace_wide);
  ASSERT_EQ(gfx::Point(900, 0), result);
  result = floating_behavior.GetPositionForShowingKeyboard(keyboard_size,
                                                           workspace_tall);
  ASSERT_EQ(gfx::Point(400, 0), result);

  floating_behavior.AdjustSetBoundsRequest(workspace_wide, bottom_left);
  result = floating_behavior.GetPositionForShowingKeyboard(keyboard_size,
                                                           workspace_wide);
  ASSERT_EQ(gfx::Point(0, 400), result);
  result = floating_behavior.GetPositionForShowingKeyboard(keyboard_size,
                                                           workspace_tall);
  ASSERT_EQ(gfx::Point(0, 900), result);

  floating_behavior.AdjustSetBoundsRequest(workspace_wide, bottom_right);
  result = floating_behavior.GetPositionForShowingKeyboard(keyboard_size,
                                                           workspace_wide);
  ASSERT_EQ(gfx::Point(900, 400), result);
  result = floating_behavior.GetPositionForShowingKeyboard(keyboard_size,
                                                           workspace_tall);
  ASSERT_EQ(gfx::Point(400, 900), result);

  floating_behavior.AdjustSetBoundsRequest(workspace_wide, bottomish_center);
  result = floating_behavior.GetPositionForShowingKeyboard(keyboard_size,
                                                           workspace_wide);
  ASSERT_EQ(gfx::Point(450, 390), result);
  result = floating_behavior.GetPositionForShowingKeyboard(keyboard_size,
                                                           workspace_tall);

  // rather than 400:0 for the vertical padding, use 390:10
  // with 900 pixels available this ratio results in 877.5, which is truncated.
  // 390 / 400 * 900 = 877.5
  ASSERT_EQ(gfx::Point(200, 877), result);
}

TEST(ContainerFloatingBehaviorTest, DontSaveCoordinatesUntilKeyboardMoved) {
  ContainerFloatingBehavior floating_behavior(nullptr);

  const int keyboard_width = 600;
  const int keyboard_height = 70;

  gfx::Rect workspace(0, 0, 1000, 600);
  gfx::Rect top_left(0, 0, keyboard_width, keyboard_height);
  gfx::Rect center(100, 100, keyboard_width, keyboard_height);
  gfx::Rect initial_default(
      workspace.width() - keyboard_width - kDefaultDistanceFromScreenRight,
      workspace.height() - keyboard_height - kDefaultDistanceFromScreenBottom,
      keyboard_width, keyboard_height);

  // Adjust bounds to the arbitrary load location. Floating Behavior should use
  // the UX-chosen default location instead.
  gfx::Rect result =
      floating_behavior.AdjustSetBoundsRequest(workspace, top_left);
  ASSERT_EQ(initial_default, result);

  // Doing the same thing again should result in the same behavior, since the
  // values should not have been preserved.
  result = floating_behavior.AdjustSetBoundsRequest(workspace, top_left);
  ASSERT_EQ(initial_default, result);

  // Simulate the user clicking and moving the keyboard to some arbitrary
  // location (it doesn't matter where). Now that the coordinate is known to be
  // user-determined.
  floating_behavior.SavePosition(
      gfx::Rect(10, 10, keyboard_width, keyboard_height), workspace.size());

  // Move the keyboard somewhere else. The coordinates should be taken as-is
  // without being adjusted.
  result = floating_behavior.AdjustSetBoundsRequest(workspace, center);
  ASSERT_EQ(center, result);
}

TEST(ContainerFloatingBehaviorTest, SetDraggableArea) {
  ContainerFloatingBehavior floating_behavior(nullptr);
  ASSERT_FALSE(
      floating_behavior.IsDragHandle(gfx::Vector2d(2, 2), gfx::Size(600, 600)));
  floating_behavior.SetDraggableArea(gfx::Rect(0, 0, 10, 10));
  ASSERT_TRUE(
      floating_behavior.IsDragHandle(gfx::Vector2d(2, 2), gfx::Size(600, 600)));
}

}  // namespace keyboard