/**
 * @author Edouard DUPIN
 * 
 * @copyright 2011, Edouard DUPIN, all right reserved
 * 
 * @license BSD v3 (see license file)
 */


#ifndef __EWOL_BUTTON_H__
#define __EWOL_BUTTON_H__

#include <etk/types.h>
#include <ewol/debug.h>
#include <ewol/widget/Widget.h>
#include <ewol/compositing/Text.h>
#include <ewol/compositing/Image.h>
#include <ewol/compositing/Shaper.h>
#include <ewol/widget/WidgetManager.h>


namespace ewol {
	namespace widget {
		/**
		 * @ingroup ewolWidgetGroup
		 * @brief 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 {
			public:
				static void init(ewol::WidgetManager& _widgetManager);
				// Event list of properties
				static const char* const eventPressed;
				static const char* const eventDown;
				static const char* const eventUp;
				static const char* const eventEnter;
				static const char* const eventLeave;
				static const char* const eventValue;
				// Config list of properties
				static const char* const configToggle;
				static const char* const configLock;
				static const char* const configValue;
				static const char* const configShaper;
				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
				};
			private:
				ewol::Shaper m_shaper; //!< Compositing theme.
			public:
				/**
				 * @brief Constructor
				 * @param[in] _shaperName Shaper file properties
				 */
				Button(const std::string& _shaperName="THEME:GUI:widgetButton.conf");
				/**
				 * @brief Destructor
				 */
				virtual ~Button(void);
				/**
				 * @brief set the shaper name (use the contructer one this permit to not noad unused shaper)
				 * @param[in] _shaperName The new shaper filename
				 */
				void setShaperName(const std::string& _shaperName);
			protected:
				ewol::Widget* m_subWidget[2]; //!< subwidget of the button
			public:
				/**
				 * @brief Specify the current widget
				 * @param[in] _subWidget Widget to add normal
				 */
				void setSubWidget(ewol::Widget* _subWidget);
				/**
				 * @brief Specify the current widget
				 * @param[in] _subWidget Widget to add Toggle
				 */
				void setSubWidgetToggle(ewol::Widget* _subWidget);
				/**
				 * @brief get the current displayed composition
				 * @return The base widget
				 */
				ewol::Widget* getSubWidget(void) const {
					return m_subWidget[0];
				};
				/**
				 * @brief get the current displayed composition
				 * @return The toggle widget
				 */
				ewol::Widget* getSubWidgetToggle(void) const {
					return m_subWidget[1];
				};
			protected:
				bool m_value; //!< Current state of the button.
			public:
				/**
				 * @brief set the currentValue of the Button (pressed or not)
				 * @note Work only in toggle mode
				 * @param[in] _val New value of the button
				 */
				void setValue(bool _val);
				/**
				 * @brief get the current button value.
				 * @return True : The button is pressed.
				 * @return false : The button is released.
				 */
				bool getValue(void) const {
					return m_value;
				};
			protected:
				enum buttonLock m_lock; //!< Current lock state of the button.
			public:
				/**
				 * @brief set the button lock state.
				 * @param[in] _lock New lock mode of the button
				 */
				void setLock(enum buttonLock _lock);
				/**
				 * @brief get the current button lock value.
				 * @return The requested lock mode
				 */
				enum buttonLock getLock(void) const {
					return m_lock;
				};
			protected:
				bool m_toggleMode; //!< The button is able to toggle.
			public:
				/**
				 * @brief change the toggle mode.
				 * @param[in] _togg New toggle mode
				 */
				void setToggleMode(bool _togg);
				/**
				 * @brief get the current toggle mode.
				 * @return the current toggle mode.
				 */
				bool getToggleMode(void) const {
					return m_toggleMode;
				};
			private:
				bool m_mouseHover; //!< Flag to know where the mouse is (inside the displayed widget (if not fill)).
				bool m_buttonPressed; //!< Flag to know if the button is curently pressed.
				// hover area :
				vec2 m_selectableAreaPos; //!< Start position of the events
				vec2 m_selectableAreaSize; //!< size of the event positions
			private:
				/**
				 * @brief internal system to change the property of the current status
				 * @param[in] _newStatusId new state
				 */
				void changeStatusIn(int32_t _newStatusId);
				/**
				 * @brief update the status with the internal satte of the button ...
				 */
				void CheckStatus(void);
			protected: // Derived function
				virtual void onDraw(void);
				virtual bool onSetConfig(const ewol::EConfig& _conf);
				virtual bool onGetConfig(const char* _config, std::string& _result) const;
			public: // Derived function
				virtual void calculateMinMaxSize(void);
				virtual void calculateSize(const vec2& _availlable);
				virtual void onRegenerateDisplay(void);
				virtual void systemDraw(const ewol::DrawProperty& _displayProp);
				virtual bool onEventInput(const ewol::EventInput& _event);
				virtual bool onEventEntry(const ewol::EventEntry& _event);
				virtual bool loadXML(exml::Element* _node);
				virtual ewol::Widget* getWidgetNamed(const std::string& _widgetName);
			private: // derived function
				virtual void periodicCall(const ewol::EventTime& _event);
		};
};

#endif