BP_Component

BP_Component

Codex Home → Developer Resources → BP_Component
BP_Component

The BP_Component class is the basis of getting your plugin initiated into BuddyPress. You extend this class to create custom components. In fact, the core components extend this class to create each core component (members, activity, groups etc.)
This is the members component class which extends BP_Component:
class BP_Members_Component extends BP_Component {

/**
* Start the members component creation process
*
* @since BuddyPress (1.5)
*/
function __construct() {
parent::start(
'members',
__( 'Members', 'buddypress' ),
BP_PLUGIN_DIR
);
}

/**
* Include files
*
* @global BuddyPress $bp The one true BuddyPress instance
*/
function includes() {
$includes = array(
'actions',
'filters',
'screens',
'template',
'buddybar',
'adminbar',
'functions',
'notifications',
);
parent::includes( $includes );
}

/**
* Setup globals
*
* The BP_MEMBERS_SLUG constant is deprecated, and only used here for
* backwards compatibility.
*
* @since BuddyPress (1.5)
* @global BuddyPress $bp The one true BuddyPress instance
*/
function setup_globals() {
global $bp;

// Define a slug, if necessary
if ( !defined( 'BP_MEMBERS_SLUG' ) )
define( 'BP_MEMBERS_SLUG', $this->id );

$globals = array(
'slug' => BP_MEMBERS_SLUG,
'root_slug' => isset( $bp->pages->members->slug ) ? $bp->pages->members->slug : BP_MEMBERS_SLUG,
'has_directory' => true,
'search_string' => __( 'Search Members...', 'buddypress' ),
);

parent::setup_globals( $globals );

/** Logged in user ****************************************************/

// Fetch the full name for the logged in user
$bp->loggedin_user->fullname = bp_core_get_user_displayname( bp_loggedin_user_id() );

// Hits the DB on single WP installs so get this separately
$bp->loggedin_user->is_super_admin = $bp->loggedin_user->is_site_admin = is_super_admin( bp_loggedin_user_id() );

// The domain for the user currently logged in. eg: http://domain.com/members/andy
$bp->loggedin_user->domain = bp_core_get_user_domain( bp_loggedin_user_id() );

// The core userdata of the user who is currently logged in.
$bp->loggedin_user->userdata = bp_core_get_core_userdata( bp_loggedin_user_id() );

/** Displayed user ****************************************************/

// The domain for the user currently being displayed
$bp->displayed_user->domain = bp_core_get_user_domain( bp_displayed_user_id() );

// The core userdata of the user who is currently being displayed
$bp->displayed_user->userdata = bp_core_get_core_userdata( bp_displayed_user_id() );

// Fetch the full name displayed user
$bp->displayed_user->fullname = bp_core_get_user_displayname( bp_displayed_user_id() );

/** Profiles Fallback *************************************************/

if ( !bp_is_active( 'xprofile' ) ) {
$bp->profile = new stdClass;
$bp->profile->slug = 'profile';
$bp->profile->id = 'profile';
}

/** Default Profile Component *****************************************/
if ( !defined( 'BP_DEFAULT_COMPONENT' ) ) {
if ( bp_is_active( 'activity' ) && isset( $bp->pages->activity ) )
$bp->default_component = bp_get_activity_slug();
else
$bp->default_component = ( 'xprofile' == $bp->profile->id ) ? 'profile' : $bp->profile->id;

} else {
$bp->default_component = BP_DEFAULT_COMPONENT;
}

if ( bp_displayed_user_id() ) {
$bp->canonical_stack['base_url'] = bp_displayed_user_domain();

if ( bp_current_component() ) {
$bp->canonical_stack['component'] = bp_current_component();
}

if ( bp_current_action() ) {
$bp->canonical_stack['action'] = bp_current_action();
}

if ( !empty( $bp->action_variables ) ) {
$bp->canonical_stack['action_variables'] = bp_action_variables();
}

if ( !bp_current_component() ) {
$bp->current_component = $bp->default_component;
} else if ( bp_is_current_component( $bp->default_component ) && !bp_current_action() ) {
// The canonical URL will not contain the default component
unset( $bp->canonical_stack['component'] );
}
}
}

/**
* Setup BuddyBar navigation
*
* @global BuddyPress $bp The one true BuddyPress instance
*/
function setup_nav() {
global $bp;

// Add 'Profile' to the main navigation
if ( !bp_is_active( 'xprofile' ) ) {

// Don't set up navigation if there's no user
if ( !is_user_logged_in() && !bp_is_user() )
return;

$sub_nav = array();
$main_nav = array(
'name' => __( 'Profile', 'buddypress' ),
'slug' => $bp->profile->slug,
'position' => 20,
'screen_function' => 'bp_members_screen_display_profile',
'default_subnav_slug' => 'public', //bp 1.7 requires a default subnav. If no subnav use same slug as parent slug.
'item_css_id' => $bp->profile->id
);

// User links
$user_domain = bp_displayed_user_domain() ? bp_displayed_user_domain() : bp_loggedin_user_domain();
$profile_link = trailingslashit( $user_domain . $bp->profile->slug );

// Add the subnav items to the profile
$sub_nav[] = array(
'name' => __( 'Public', 'buddypress' ),
'slug' => 'public',
'parent_url' => $profile_link,
'parent_slug' => $bp->profile->slug,
'screen_function' => 'bp_members_screen_display_profile',
'position' => 10
);

parent::setup_nav( $main_nav, $sub_nav );
}
}

/**
* Sets up the title for pages and