text: #ifndef DALI_DEMO_TABLEVIEW_H
  #define DALI_DEMO_TABLEVIEW_H
  
  /*
   * 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/popup/popup.h>
  #include <dali/dali.h>
  
  class Example;
  
  typedef std::vector<Example>        ExampleList;
  typedef ExampleList::iterator       ExampleListIter;
  typedef ExampleList::const_iterator ExampleListConstIter;
  
  typedef std::vector<Dali::Animation>  AnimationList;
  typedef AnimationList::iterator       AnimationListIter;
  typedef AnimationList::const_iterator AnimationListConstIter;
  
  /**
   * Example information
   *
   * Represents a single Example.
   */
  struct Example
  {
    // Constructors
  
    /**
     * @param[in] name unique name of example
     * @param[in] title The caption for the example to appear on a tile button.
     */
    Example(std::string name, std::string title)
    : name(name),
      title(title)
    {
    }
  
    Example()
    {
    }
  
    // Data
  
    std::string name;  ///< unique name of example
    std::string title; ///< title (caption) of example to appear on tile button.
  };
  
  /**
   * Dali-Demo instance
   */
  class DaliTableView : public Dali::ConnectionTracker
  {
  public:
    DaliTableView(Dali::Application& application);
    ~DaliTableView();
  
  public:
    /**
     * Adds an Example to our demo showcase
     *
     * @param[in] example The Example description.
     *
     * @note Should be called before the Application MainLoop is started.
     */
    void AddExample(Example example);
  
    /**
     * Sorts the example list alphabetically by Title if parameter is true.
     *
     * @param[in] sortAlphabetically If true, example list is sorted alphabetically.
     *
     * @note Should be called before the Application MainLoop is started.
     * @note By default the examples are NOT sorted alphabetically by Title.
     */
    void SortAlphabetically(bool sortAlphabetically);
  
  private:                                                      // Application callbacks & implementation
    static const unsigned int FOCUS_ANIMATION_ACTOR_NUMBER = 2; ///< The number of elements used to form the custom focus effect
  
    /**
     * Shape enum for create function
     */
    enum ShapeType
    {
      CIRCLE,
      BUBBLE
    };
  
    /**
     * Initialize application.
     *
     * @param[in] app Application instance
     */
    void Initialize(Dali::Application& app);
  
    /**
     * Populates the contents (ScrollView) with all the
     * Examples that have been Added using the AddExample(...)
     * call
     */
    void Populate();
  
    /**
     * Rotates RootActor orientation to that specified.
     *
     * @param[in] degrees The requested angle.
     */
    void Rotate(unsigned int degrees);
  
    /**
     * Creates a tile for the main menu.
     *
     * @param[in] name The unique name for this Tile
     * @param[in] title The text caption that appears on the Tile
     * @param[in] parentSize Tile's parent size.
     * @param[in] position The tiles relative position within a page
     *
     * @return The Actor for the created tile.
     */
    Dali::Actor CreateTile(const std::string& name, const std::string& title, const Dali::Vector3& sizeMultiplier, Dali::Vector2& position);
  
    // Signal handlers
  
    /**
     * Signal emitted when any tile has been pressed
     *
     * @param[in] actor The Actor representing this tile.
     * @param[in] event The Touch information.
     *
     * @return Consume flag
     */
    bool OnTilePressed(Dali::Actor actor, const Dali::TouchEvent& event);
  
    /**
     * Called by OnTilePressed & Accessibility to do the appropriate action.
     *
     * @param[in] actor The Actor representing this tile.
     * @param[in] state The Touch state
     *
     * @return Consume flag
     */
    bool DoTilePress(Dali::Actor actor, Dali::PointState::Type state);
  
    /**
     * Signal emitted when any tile has been hovered
     *
     * @param[in] actor The Actor representing this tile.
     * @param[in] event The HoverEvent
     *
     * @return Consume flag
     */
    bool OnTileHovered(Dali::Actor actor, const Dali::HoverEvent& event);
  
    /**
     * Signal emitted when the pressed animation has completed.
     *
     * @param[in] source The animation source.
     */
    void OnPressedAnimationFinished(Dali::Animation& source);
  
    /**
     * Signal emitted when the button has been clicked
     *
     * @param[in] button The Button that is clicked.
     *
     * @return Consume flag
     */
    bool OnButtonClicked(Dali::Toolkit::Button& button);
  
    /**
     * Signal emitted when scrolling has started.
     *
     * @param[in] position The current position of the scroll contents.
     */
    void OnScrollStart(const Dali::Vector2& position);
  
    /**
     * Signal emitted when scrolling has completed.
     *
     * @param[in] position The current position of the scroll contents.
     */
    void OnScrollComplete(const Dali::Vector2& position);
  
    /**
     * Signal emitted when any Sensitive Actor has been touched
     * (other than those touches consumed by OnTilePressed)
     *
     * @param[in] actor The Actor touched.
     * @param[in] event The Touch information.
     *
     * @return Consume flag
     */
    bool OnScrollTouched(Dali::Actor actor, const Dali::TouchEvent& event);
  
    /**
     * Setup the effect on the scroll view
     */
    void ApplyScrollViewEffect();
  
    /**
     * Apply the cube effect to all the page actors
     */
    void ApplyCubeEffectToPages();
  
    /**
     * Setup the inner cube effect
     */
    void SetupInnerPageCubeEffect();
  
    /**
     * Apply a shader effect to a table tile
     */
    void ApplyEffectToTile(Dali::Actor tile);
  
    /**
     * Apply effect to the content of a tile
     */
    void ApplyEffectToTileContent(Dali::Actor tileContent);
  
    /**
     * Key event handler
     */
    void OnKeyEvent(const Dali::KeyEvent& event);
  
    /**
     * Create a depth field background
     *
     * @param[in] bubbleLayer Add the graphics to this layer
     */
    void SetupBackground(Dali::Actor bubbleLayer);
  
    /**
     * Create background actors for the given layer
     *
     * @param[in] layer The layer to add the actors to
     * @param[in] count The number of actors to generate
     */
    void AddBackgroundActors(Dali::Actor layer, int count);
  
    /**
     * Timer handler for ending background animation
     *
     * @return Return value for timer handler
     */
    bool PauseBackgroundAnimation();
  
    /**
     * Pause all animations
     */
    void PauseAnimation();
  
    /**
     * Resume all animations
     */
    void PlayAnimation();
  
    /**
     * @brief Creates and sets up the custom effect used for the keyboard (and mouse) focus.
     */
    void CreateFocusEffect();
  
    /**
     * Callback when the keyboard focus is going to be changed.
     *
     * @param[in] current The current focused actor
     * @param[in] proposed The actor proposed by the keyboard focus manager to move the focus to
     * @param[in] direction The direction to move the focus
     * @return The actor to move the keyboard focus to.
     */
    Dali::Actor OnKeyboardPreFocusChange(Dali::Actor current, Dali::Actor proposed, Dali::Toolkit::Control::KeyboardFocus::Direction direction);
  
    /**
     * Callback when the keyboard focused actor is activated.
     *
     * @param[in] activatedActor The activated actor
     */
    void OnFocusedActorActivated(Dali::Actor activatedActor);
  
    /**
     * Callback when the keyboard focus indicator is enabled.
     *
     * @param[in] actor The keyboard focus indicator.
     */
    void OnFocusIndicatorEnabled(Dali::Actor actor);
  
    /**
     * Callback when the keyboard focus indicator is disabled.
     *
     * @param[in] actor The keyboard focus indicator.
     */
    void OnFocusIndicatorDisabled(Dali::Actor actor);
  
    /**
     * Called when the logo is tapped
     *
     * @param[in]  actor  The tapped actor
     * @param[in]  tap    The tap information.
     */
    void OnLogoTapped(Dali::Actor actor, const Dali::TapGesture& tap);
  
    /**
     * Hides the popup
     */
    void HideVersionPopup();
  
    /*
    * @brief Callback called when the buttons page actor is relaid out
    *
    * @param[in] actor The page actor
    */
    void OnButtonsPageRelayout(const Dali::Actor& actor);
  
    /**
    * @brief The is connected to the keyboard focus highlight actor, and called when it is placed on the scene.
    * @param[in] actor The actor that has been placed on the scene.
    */
    void OnSceneConnect(Dali::Actor actor);
  
    /**
    * @brief Callback called to set up background actors
    *
    * @param[in] actor The actor raising the callback
    */
    void InitialiseBackgroundActors(Dali::Actor actor);
  
  private:
    Dali::Application&              mApplication;      ///< Application instance.
    Dali::Toolkit::Control          mRootActor;        ///< All content (excluding background is anchored to this Actor)
    Dali::Animation                 mRotateAnimation;  ///< Animation to rotate and resize mRootActor.
    Dali::Animation                 mPressedAnimation; ///< Button press scaling animation.
    Dali::Toolkit::ScrollView       mScrollView;       ///< ScrollView container (for all Examples)
    Dali::Toolkit::ScrollViewEffect mScrollViewEffect; ///< Effect to be applied to the scroll view
    Dali::Toolkit::RulerPtr         mScrollRulerX;     ///< ScrollView X (horizontal) ruler
    Dali::Toolkit::RulerPtr         mScrollRulerY;     ///< ScrollView Y (vertical) ruler
    Dali::Actor                     mPressedActor;     ///< The currently pressed actor.
    Dali::Timer                     mAnimationTimer;   ///< Timer used to turn off animation after a specific time period
    Dali::TapGestureDetector        mLogoTapDetector;  ///< To detect taps on the logo
    Dali::Toolkit::Popup            mVersionPopup;     ///< Displays DALi library version information
  
    /**
     * This struct encapsulates all data relevant to each of the elements used within the custom keyboard focus effect.
     */
    struct FocusEffect
    {
      Dali::Toolkit::ImageView actor;     ///< The parent keyboard focus highlight actor
      Dali::Animation          animation; ///< The animation for the parent keyboard focus highlight actor
    };
    FocusEffect mFocusEffect[FOCUS_ANIMATION_ACTOR_NUMBER]; ///< The elements used to create the custom focus effect
  
    std::vector<Dali::Actor> mPages;                ///< List of pages.
    AnimationList            mBackgroundAnimations; ///< List of background bubble animations
    ExampleList              mExampleList;          ///< List of examples.
  
    float mPageWidth;  ///< The width of a page within the scroll-view, used to calculate the domain
    int   mTotalPages; ///< Total pages within scrollview.
  
    bool mScrolling : 1;              ///< Flag indicating whether view is currently being scrolled
    bool mSortAlphabetically : 1;     ///< Sort examples alphabetically.
    bool mBackgroundAnimsPlaying : 1; ///< Are background animations playing
  };
  
  #endif // DALI_DEMO_TABLEVIEW_H
  