Component based application API.

Required Header

#include <component_based_app.h>

Overview

The Component Based Application API provides functions for starting and exiting Tizen component based application. Tizen component based application can consist of frame_component and service_component. This API supports making multiple frame_components and service_components per an application.

Registering Callbacks for Application State Change Events

As for Tizen component based application states, it is very simple and somewhat similar to Tizen widget application states.

Callback	Description
component_based_app_create_cb()	The callback function is called before the main loop of the application starts. In this callback, you can initialize resources which can be shared among component instances. This function should return the handle for component class so that it will be used for making instances of component.
component_based_app_terminate_cb()	This callback function is called once after the main loop of the application exits. You should release the resources of the application in this function.

Functions
int	component_based_app_main (int argc, char *argv, component_based_app_lifecycle_callback_s callback, void *user_data)
	Runs the main loop of the application until component_based_app_exit() is called.
int	component_based_app_exit (void)
	Exits the main loop of the application.
component_class_h	component_based_app_add_frame_component (component_class_h comp_class, const char comp_id, frame_component_lifecycle_callback_s callback, void *user_data)
	Adds a new frame component to comp_class.
component_class_h	component_based_app_add_service_component (component_class_h comp_class, const char comp_id, service_component_lifecycle_callback_s callback, void *user_data)
	Adds a service component to comp_class.
Typedefs
typedef component_class_h(*	component_based_app_create_cb )(void *user_data)
	Called when the application starts.
typedef void(*	component_based_app_terminate_cb )(void *user_data)
	Called when the main loop of the application exits.

Typedef Documentation

typedef component_class_h(* component_based_app_create_cb)(void *user_data)

Called when the application starts.

The callback function is called before the main loop of the application starts. In this callback, you can initialize resources which can be shared among component instances. This function should return the handle for component class so that it will be used for making instances of component.

Since :: 5.5

Remarks:: The returned object is managed by platform. You should not release the object.

Parameters:

[in] user_data The user data to be passed from the callback registration function

Returns:: The object of component class

See also:: component_based_app_main(); component_based_app_add_frame_component(); component_based_app_add_service_component()

typedef void(* component_based_app_terminate_cb)(void *user_data)

Called when the main loop of the application exits.

This callback function is called once after the main loop of the application exits. You should release the resources of the application in this function.

Since :: 5.5

Parameters:

[in] user_data The user data to be passed from the callback registration function

See also:: component_based_app_main()

Function Documentation

component_class_h component_based_app_add_frame_component	(	component_class_h	comp_class,
		const char *	comp_id,
		frame_component_lifecycle_callback_s *	callback,
		void *	user_data
	)

Adds a new frame component to comp_class.

Adds a new frame component with comp_id to comp_class. If comp_class is null, the platform creates a component_class_h and adds a new frame component with comp_id and then return the component_class_h.

Since :: 5.5

Remarks:: The specific error code can be obtained using the get_last_result() function. Error codes are described in Exception section.; The returned value is managed by the platform and will be released when the component_based_app_create_cb() function returns it.

Parameters:

[in]	comp_class	The component class
[in]	comp_id	The ID of the frame component
[in]	callback	The set of lifecycle callbacks of the frame component
[in]	user_data	The user data to be passed to the callback functions

Returns:: comp_class on success, otherwise NULL

Exceptions:

APP_ERROR_NONE	Successful
APP_ERROR_INVALID_PARAMETER	Invalid parameter
APP_ERROR_OUT_OF_MEMORY	Out of memory

See also:: get_last_result()

component_class_h component_based_app_add_service_component	(	component_class_h	comp_class,
		const char *	comp_id,
		service_component_lifecycle_callback_s *	callback,
		void *	user_data
	)

Adds a service component to comp_class.

Adds a new service component with comp_id to comp_class. If comp_class is null, the platform creates a component_class_h and adds a new service component with comp_id and then return the component_class_h.

Since :: 5.5

Remarks:: The specific error code can be obtained using the get_last_result() function. Error codes are described in Exception section.; The returned value is managed by the platform and will be released when the component_based_app_create_cb() function returns it.

Parameters:

[in]	comp_class	The component class
[in]	comp_id	The ID of the service component
[in]	callback	The set of lifecycle callbacks of the service component
[in]	user_data	The user data to be passed to the callback functions

Returns:: comp_class on success, otherwise NULL

Exceptions:

APP_ERROR_NONE	Successful
APP_ERROR_INVALID_PARAMETER	Invalid parameter
APP_ERROR_OUT_OF_MEMORY	Out of memory

See also:: get_last_result()

int component_based_app_exit ( void )

Exits the main loop of the application.

Since :: 5.5

Returns:: 0 on success, otherwise a negative error value

Return values:

APP_ERROR_NONE Successful

int component_based_app_main	(	int	argc,
		char **	argv,
		component_based_app_lifecycle_callback_s *	callback,
		void *	user_data
	)

Runs the main loop of the application until component_based_app_exit() is called.

Since :: 5.5

Parameters:

[in]	argc	The argument count
[in]	argv	The argument vector
[in]	callback	The set of callback functions to handle application events
[in]	user_data	The user data to be passed to the callback function

Returns:: 0 on success, otherwise a negative error value

Return values:

APP_ERROR_NONE	Successful
APP_ERROR_INVALID_PARAMETER	Invalid parameter

See also:: component_based_app_exit()

Required Header

Overview

Registering Callbacks for Application State Change Events

Functions

Typedefs

Typedef Documentation

Function Documentation