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dashboard-widget-api.php
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dashboard-widget-api.php
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<?php
/*
Plugin Name: Dashboard Widgets API
Plugin URI: https://github.com/markparolisi/wp-dashboard-widget-api
Description: Add configurable widgets to the WP dashboard using an interface similar to sidebar widgets.
Author: markparolisi, voceplatforms
Version: 1.0
Author URI: http://markparolisi.com/
*/
if ( !class_exists( 'Dashboard_Widgets' ) ) {
function register_dashboard_widget( $classname ) {
Dashboard_Widgets::GetInstance()->add_dashboard_widget( $classname );
}
/* * *
*
*/
class Dashboard_Widgets {
private static $instance;
private $widgets = array( );
/**
* Singleton call
* @return Dashboard_Widgets object
*/
public static function GetInstance() {
if ( !isset( self::$instance ) ) {
self::$instance = new Dashboard_Widgets();
}
return self::$instance;
}
/**
* @constructor
*/
public function __construct() {
$this->_setup();
}
/**
* Make WP call to add dashboard widget
* @return void
*/
private function _setup() {
add_action( 'wp_dashboard_setup', array( $this, 'action_add_dashboard_widgets' ) );
}
/**
* Add Dasboard_Widget object to list of internal widgets
* @param type $classname
* @return boolean|Dashboard_Widget object
*/
public function add_dashboard_widget( $classname ) {
if ( !class_exists( $classname ) ) {
return false;
}
$this->widgets[] = new Dashboard_Widget( $classname );
return end( $this->widgets );
}
/**
* Called by WP action. Iterates through widgets and adds them to dashboard.
* @return void
*/
public function action_add_dashboard_widgets() {
foreach ( $this->widgets as $w ) {
wp_add_dashboard_widget( $w->id, $w->name, array( $w, 'widget' ), array( $w, 'control_callback' ) );
}
}
}
}
// end Dashboard_Widgets class
/**
*
*/
class Dashboard_Widget {
public $widget;
public $id;
public $name;
public $options = array( );
/**
* @constructor
* @param string $classname
*/
public function __construct( $classname ) {
if ( class_exists( $classname ) ) {
$w = new $classname;
$this->widget = $w;
$this->id = get_class( $w );
if ( $this->widget->name ) {
$this->name = $this->widget->name;
} else {
$this->name = ucwords( str_replace( '_', ' ', $this->id ) );
}
}
}
/**
* Return the array of widget data
* @return array
*/
private function _get_widget_options() {
if ( !$widget_options = get_option( 'dashboard_widget_options' ) ) {
$widget_options = array( );
}
if ( !isset( $widget_options[$this->id] ) ) {
$widget_options[$this->id] = array( );
}
return $widget_options;
}
/**
* Execute the callback method for the widget
* @return void
*/
public function widget() {
if ( method_exists( $this->widget, 'widget' ) ) {
echo $this->widget->widget( $this->_get_widget_options() );
} else {
echo "No widget display function defined";
}
}
/**
* Create options for the dashboard widget
* @return void
*/
public function control_callback() {
$widget_options = $this->_get_widget_options();
if ( 'POST' == $_SERVER['REQUEST_METHOD'] && $_POST['widget_id'] == $this->id ) {
foreach ( $_POST as $key => $val ) {
var_dump( $key, $val );
if ( $key == $this->id && is_array( $val ) ) {
foreach ( $val as $k => $v ) {
$widget_options[$this->id][$k] = esc_attr( $v );
}
}
}
#die( var_dump( $widget_options ) );
update_option( 'dashboard_widget_options', $widget_options );
delete_transient( 'dash_' . md5( $this->id ) );
}
if ( method_exists( $this->widget, 'form' ) ) {
$this->widget->form( $widget_options );
} else {
echo "This Widget has no options";
}
}
}