/*
 * Copyright (c) 2020 Samsung Electronics Co., Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

#include <dali-toolkit/dali-toolkit.h>
#include <dali-toolkit/devel-api/controls/control-devel.h>
#include <dali-toolkit/devel-api/controls/tooltip/tooltip-properties.h>

using namespace Dali;
using namespace Dali::Toolkit;

namespace
{
const Vector4     WINDOW_COLOR(211.0f / 255.0f, 211.0f / 255.0f, 211.0f / 255.0f, 1.0f); ///< The color of the window
const char* const THEME_PATH(DEMO_STYLE_DIR "tooltip-example-theme.json");               ///< The theme used for this example
const float       POSITION_INCREMENTER(0.2f);                                            ///< The position difference between the controls along the Y-Axis.
} // unnamed namespace

/**
 * @brief Creates a controller which demonstrates the tooltip functionality in control.
 *
 * The Control base class supports tooltip functionality. However, the Toolkit Tooltip style is only set on Buttons by default.
 * This example portrays the different ways in which a tooltip can be displayed and customised.
 */
class TooltipController : public ConnectionTracker
{
public:
  TooltipController(Application& application)
  : mApplication(application),
    previousPosition(0.0f)
  {
    // Connect to the Application's Init signal
    mApplication.InitSignal().Connect(this, &TooltipController::Create);
  }

private:
  // The Init signal is received once (only) during the Application lifetime
  void Create(Application& application)
  {
    // Set the window background color and connect to the window's key signal to allow Back and Escape to exit.
    Window window = application.GetWindow();
    window.SetBackgroundColor(WINDOW_COLOR);
    window.KeyEventSignal().Connect(this, &TooltipController::OnKeyEvent);
    const Vector2 windowSize = window.GetSize();

    // Add a text label at the top for information purposes
    Control label = TextLabel::New("Hover over buttons to see tooltip");
    label.SetProperty(Actor::Property::PARENT_ORIGIN, ParentOrigin::TOP_CENTER);
    label.SetProperty(Actor::Property::ANCHOR_POINT, AnchorPoint::TOP_CENTER);
    label.SetProperty(TextLabel::Property::HORIZONTAL_ALIGNMENT, "Center");
    window.Add(label);

    // Simple tooltip from stylesheet
    Control simple = PushButton::New();
    simple.SetStyleName("TooltipTextOnly");
    SetLabel(simple, "Simple");
    Layout(simple, windowSize);
    window.Add(simple);

    // Tooltip with icon and text, from stylesheet
    Control iconWithText = PushButton::New();
    iconWithText.SetStyleName("TooltipArray");
    SetLabel(iconWithText, "Icon with Text");
    Layout(iconWithText, windowSize);
    window.Add(iconWithText);

    // Tooltip with custom style, from stylesheet
    Control customFromStylesheet = PushButton::New();
    customFromStylesheet.SetStyleName("TooltipCustom");
    SetLabel(customFromStylesheet, "Custom From Stylesheet");
    Layout(customFromStylesheet, windowSize);
    window.Add(customFromStylesheet);

    // Tooltip with custom style, from code
    Control customFromCode = PushButton::New();
    SetLabel(customFromCode, "Custom From Code");
    Layout(customFromCode, windowSize);
    customFromCode.SetProperty(DevelControl::Property::TOOLTIP,
                               {{Tooltip::Property::CONTENT,
                                 Property::Array{{{{Toolkit::Visual::Property::TYPE, Visual::IMAGE},
                                                   {ImageVisual::Property::URL, DEMO_IMAGE_DIR "Logo-for-demo.png"}}},
                                                 {{{Toolkit::Visual::Property::TYPE, Visual::TEXT},
                                                   {TextVisual::Property::TEXT_COLOR, Color::WHITE},
                                                   {TextVisual::Property::TEXT, "Custom coded style\nat hover point"},
                                                   {TextVisual::Property::MULTI_LINE, true},
                                                   {TextVisual::Property::HORIZONTAL_ALIGNMENT, "CENTER"},
                                                   {TextVisual::Property::POINT_SIZE, 16}}}}},
                                {Tooltip::Property::LAYOUT, Vector2(2, 1)},
                                {Tooltip::Property::POSITION, Tooltip::Position::HOVER_POINT},
                                {Tooltip::Property::BACKGROUND,
                                 {{Tooltip::Background::Property::VISUAL, DEMO_IMAGE_DIR "tooltip.9.png"},
                                  {Tooltip::Background::Property::BORDER, Rect<int>(1, 5, 5, 1)}}}});
    window.Add(customFromCode);
  }

  /**
   * @brief Called when any key event is received
   *
   * Will use this to quit the application if Back or the Escape key is received
   * @param[in]  event  The key event information
   */
  void OnKeyEvent(const KeyEvent& event)
  {
    if(event.GetState() == KeyEvent::DOWN)
    {
      if(IsKey(event, Dali::DALI_KEY_ESCAPE) || IsKey(event, Dali::DALI_KEY_BACK))
      {
        mApplication.Quit();
      }
    }
  }

  /**
   * @brief Sets the label on the control.
   * @param[in]  label  The label to set.
   */
  void SetLabel(Control control, std::string label)
  {
    if(control)
    {
      control.SetProperty(Button::Property::LABEL,
                          Property::Map().Add(Toolkit::Visual::Property::TYPE, Visual::TEXT).Add(TextVisual::Property::TEXT, label));
    }
  }

  /**
   * @brief Lays out the control in the appropriate location.
   * @param[in]  control    The control to layout.
   * @param[in]  windowSize  The size of the window, passing it in so we don't have to retrieve it every time.
   */
  void Layout(Control control, const Vector2& windowSize)
  {
    if(control)
    {
      previousPosition += POSITION_INCREMENTER;
      control.SetResizePolicy(ResizePolicy::SIZE_RELATIVE_TO_PARENT, Dimension::ALL_DIMENSIONS);
      control.SetProperty(Actor::Property::SIZE_MODE_FACTOR, Vector3(0.75, 0.1, 1.0));
      control.SetProperty(Actor::Property::ANCHOR_POINT, AnchorPoint::CENTER);
      control.SetProperty(Actor::Property::PARENT_ORIGIN, ParentOrigin::TOP_CENTER);
      control.SetProperty(Actor::Property::POSITION_Y, windowSize.height * previousPosition);
    }
  }

private:
  Application& mApplication;
  float        previousPosition;
};

int DALI_EXPORT_API main(int argc, char** argv)
{
  Application application = Application::New(&argc, &argv, THEME_PATH);

  TooltipController test(application);

  application.MainLoop();

  return 0;
}