Include Page Widget

include-page-widget.php

<?php
/*
Plugin Name: Include Page Widget
Plugin URI: http://trepmal.com/
Description: Widget. Display a page's content. That's it. Fork and adapt!
Version: 0.1
Author: Kailey Lampert
Author URI: http://kaileylampert.com

Copyright (C) 2012  Kailey Lampert

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

add_action( 'widgets_init', 'register_include_page_widget' );
function register_include_page_widget() {
	register_widget( 'include_page_widget' );
}
class include_page_widget extends WP_Widget {

	function __construct() {
		$widget_ops = array('classname' => 'include-page-widget', 'description' => __( 'About this widget' ) );
		$control_ops = array( 'width' => 300 );
		parent::WP_Widget( 'includepagewidget', __( 'Include Page' ), $widget_ops, $control_ops );
	}

	function widget( $args, $instance ) {

		extract( $args, EXTR_SKIP );
		echo $before_widget;

		switch( $instance['title_display'] ) {
			case 'none':
				$title = false;
			break;
			case 'page':
				$title = get_the_title( $instance['page_id'] );
			break;
			case 'widget':
				$title = $instance['title'];
			break;
		}
		echo $title ? $before_title . $title . $after_title : '';
		echo apply_filters( 'the_content', get_page( $instance['page_id'] )->post_content );

		echo $after_widget;

	} //end widget()

	function update($new_instance, $old_instance) {

		$instance = $old_instance;
		$instance['title'] = esc_attr( $new_instance['title'] );
		$instance['title_display'] = esc_attr( $new_instance['title_display'] );
		$instance['page_id'] = intval( $new_instance['page_id'] );
		return $instance;

	} //end update()

	function form( $instance ) {
		$instance = wp_parse_args( (array) $instance, array( 'title' => 'Include Page Widget', 'title_display' => 'page', 'page_id' => 0 ) );
		extract( $instance );
		?>
		<p style="width:63%;float:left;">
			<label for="<?php echo $this->get_field_id( 'title' ); ?>"><?php _e( 'Title:' );?>
				<input class="widefat" id="<?php echo $this->get_field_id('title'); ?>" name="<?php echo $this->get_field_name('title'); ?>" type="text" value="<?php echo $title; ?>" />
			</label>
		</p>
		<p style="width:33%;float:right;">
			<label for="<?php echo $this->get_field_id('title_display'); ?>"><?php _e( 'Title Display:' );?></label>
			<select id="<?php echo $this->get_field_id('title_display'); ?>" name="<?php echo $this->get_field_name('title_display'); ?>">
			<?php $opts = array( 'none' => 'None', 'page' => 'Page title', 'widget' => 'Widget Title');
			foreach ($opts as $k => $v ) {
				echo "<option value='$k'". selected( $title_display, $k, false ) .">$v</option>";
			}
			?>
			</select>
		</p>
		<p style="clear:both;">
			<label for="<?php echo $this->get_field_id('page_id'); ?>"><?php _e( 'Page:' );?></label>
			<?php
				$args = array(
				    'depth' => 0,
				    'child_of' => 0,
				    'id' => $this->get_field_id('page_id'),
				    'selected' => $page_id,
				    'echo' => 1,
				    'name' => $this->get_field_name('page_id'),
				);
				wp_dropdown_pages( $args );
			?>
		</p>
		<?php
	} //end form()
}