/** @file
 * @author Edouard DUPIN
 * @copyright 2011, Edouard DUPIN, all right reserved
 * @license MPL v2.0 (see license file)
 */
#pragma once

#include <etk/types.hpp>
#include <ewol/debug.hpp>
#include <ewol/compositing/Text.hpp>
#include <ewol/compositing/Image.hpp>
#include <ewol/compositing/Shaper.hpp>
#include <ewol/widget/Container2.hpp>
#include <ewol/widget/Manager.hpp>
#include <esignal/Signal.hpp>



namespace ewol {
	namespace widget {
		class Button;
		using Button = ememory::Ptr<ewol::widget::Button>;
		using ButtonWeak = ememory::WeakPtr<ewol::widget::Button>;
		/**
		 * a composed button is a button with an inside composed with the specify XML element 
		 * ==> this permit to generate standard element simple
		 */
		class Button : public ewol::widget::Container2 {
			public:
				enum buttonLock{
					lockNone, //!< normal status of the button
					lockWhenPressed, //!< When the state is set in pressed, the status stay in this one
					lockWhenReleased, //!< When the state is set in not pressed, the status stay in this one
					lockAccess, //!< all event are trashed  == > acctivity of the button is disable
				};
			public: // Event list
				esignal::Signal<> signalPressed;
				esignal::Signal<> signalDown;
				esignal::Signal<> signalUp;
				esignal::Signal<> signalEnter;
				esignal::Signal<> signalLeave;
				esignal::Signal<bool> signalValue;
			public: // propertie list
				eproperty::Value<etk::Uri> propertyShape; //!< shaper name property
				eproperty::Value<bool> propertyValue; //!< Current state of the button.
				eproperty::List<enum buttonLock> propertyLock; //!< Current lock state of the button.
				eproperty::Value<bool> propertyToggleMode; //!< The button is able to toggle.
				eproperty::Value<bool> propertyEnableSingle; //!< When a single subwidget is set display all time it.
			private:
				ewol::compositing::Shaper this.shaper; //!< Compositing theme.
			protected:
				/**
				 * Constructor
				 * @param _shaperName Shaper file properties
				 */
				Button();
				void init() ;
			public:
				DECLARE_WIDGET_FACTORY(Button, "Button");
				/**
				 * Destructor
				 */
				 ~Button();
			private:
				boolean this.mouseHover; //!< Flag to know where the mouse is (inside the displayed widget (if not fill)).
				boolean this.buttonPressed; //!< Flag to know if the button is curently pressed.
				// hover area :
				Vector2f this.selectableAreaPos; //!< Start position of the events
				Vector2f this.selectableAreaSize; //!< size of the event positions
			private:
				/**
				 * internal system to change the property of the current status
				 * @param _newStatusId new state
				 */
				void changeStatusIn(int _newStatusId);
				/**
				 * update the status with the internal satte of the button ...
				 */
				void CheckStatus();
			protected: // Derived function
				 void onDraw() ;
			public:
				void calculateMinMaxSize() ;
				void onChangeSize() ;
				void onRegenerateDisplay() ;
				boolean onEventInput( ewol::event::Input _event) ;
				boolean onEventEntry( ewol::event::Entry _event) ;
				void onDetectPresenceToggleWidget()  {
					propertyToggleMode.set(true);
				}
			protected:
				esignal::Connection this.PCH; //!< Periodic Call Handle to remove it when needed
				/**
				 * Periodic call to update grapgic display
				 * @param _event Time generic event
				 */
				void periodicCall( ewol::event::Time _event);
				void onLostFocus() ;
			protected:
				 void onChangePropertyShape();
				 void onChangePropertyValue();
				 void onChangePropertyLock();
				 void onChangePropertyToggleMode();
				 void onChangePropertyEnableSingle();
		};
	};
};