featured-image-column / featured-image-column.php

featured-image-column.php in Featured Image Column 0.1.5, at featured-image-column.php

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1	<?php
2	/**
3	* Plugin Name: Featured Image Column
4	* Plugin URI: http://austinpassy.com/wordpress-plugins/featured-image-column
5	* Description:
6	* Version: 0.1.5
7	* Author: Austin Passy
8	* Author URI: http://austinpassy.com
9	*
10	* @copyright 2009 - 2011
11	* @author Austin Passy
12	* @link http://frostywebdesigns.com/
13	* @license http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
14	*
15	* This program is distributed in the hope that it will be useful,
16	* but WITHOUT ANY WARRANTY; without even the implied warranty of
17	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
18	*
19	* @package Featured_Image_Column
20	*/
21
22	if ( !class_exists( 'Featured_Image_Column' ) ) {
23	class Featured_Image_Column {
24
25	const domain = 'featured-image-column';
26	const version = '0.1.5';
27
28	/**
29	* Sets up the Featured_Image_Column plugin and loads files at the appropriate time.
30	*
31	* @since 0.1
32	*/
33	function __construct() {
34	$post_type = ( !empty( $_GET['post_type'] ) ) ? $_GET['post_type'] : 'post';
35
36	/* Define constants */
37	add_action( 'plugins_loaded', array( __CLASS__, 'constants' ) );
38
39	add_action( 'admin_init', array( __CLASS__, 'localize' ) );
40
41	add_action( 'init', array( __CLASS__, 'add_theme_support' ) );
42
43	/* Print style */
44	add_action( 'admin_head', array( __CLASS__, 'style' ) );
45
46	/* Column manager */
47	if ( self::has_posts( $post_type ) ) {
48	add_filter( 'manage_posts_columns', array( __CLASS__, 'columns' ), 10, 2 );
49	add_filter( 'manage_pages_columns', array( __CLASS__, 'columns' ), 10, 2 );
50	add_filter( "manage_edit-{$post_type}_columns", array( __CLASS__, 'columns' ), 10, 2 );
51	add_action( "manage_{$post_type}_posts_custom_column", array( __CLASS__, 'column_data' ), 10, 2 );
52	}
53
54	/* Prints pointer javascripts */
55	add_action( 'admin_enqueue_scripts', array( __CLASS__, 'pointer' ) );
56
57	do_action( 'featured_image_column_loaded' );
58	}
59
60	function constants() {
61	/* Set constant path to the plugin directory. */
62	define( 'FEATURED_IMAGE_COLUMN_DIR', plugin_dir_path( __FILE__ ) );
63	define( 'FEATURED_IMAGE_COLUMN_ADMIN', trailingslashit( FEATURED_IMAGE_COLUMN_DIR ) . 'admin/' );
64
65	/* Set constant path to the plugin URL. */
66	define( 'FEATURED_IMAGE_COLUMN_URL', plugin_dir_url( __FILE__ ) );
67	define( 'FEATURED_IMAGE_COLUMN_IMAGES', FEATURED_IMAGE_COLUMN_URL . 'images/' );
68	define( 'FEATURED_IMAGE_COLUMN_CSS', FEATURED_IMAGE_COLUMN_URL . 'css/' );
69	define( 'FEATURED_IMAGE_COLUMN_JS', FEATURED_IMAGE_COLUMN_URL . 'js/' );
70	}
71
72	function localize() {
73	load_plugin_textdomain( self::domain, null, dirname( plugin_basename( __FILE__ ) ) . '/languages/' );
74	}
75
76	/**
77	* WordPress version check
78	*
79	* @since 0.1.1
80	* @since 09/19/2011
81	*/
82	function is_version( $version = '3.3' ) {
83	global $wp_version;
84
85	if ( version_compare( $wp_version, $version, '<' ) ) {
86	return false;
87	}
88	return true;
89	}
90
91	/**
92	* Function to test if has posts to avoid a fatal error
93	*
94	* @since 0.1.4 10/17/2011
95	*/
96	function has_posts( $post_type = null ) {
97	$post_type = ( !empty( $_GET['post_type'] ) ) ? $_GET['post_type'] : 'post';
98
99	$args = array(
100	'post_type' => $post_type,
101	'post_status' => array( 'publish', 'pending', 'draft', 'future', 'private' )
102	);
103
104	$the_query = new WP_Query( $args );
105
106	if ( !$the_query->have_posts() ) {
107	return false;
108	}
109	wp_reset_query();
110	return true;
111	}
112
113	/**
114	* Add stylesheet
115	* @since 0.1
116	*/
117	function style() {
118	global $pagenow;
119
120	if ( $pagenow == 'edit.php' ) { ?>
121	<style type="text/css">
122	th#featured-image,
123	td.featured-image.column-featured-image {
124	max-height: 50px;
125	max-width: 50px;
126	width: 50px;
127	}
128	.featured-image.column-featured-image img {
129	max-height: 32px;
130	max-width: 36px;
131	-ms-interpolation-mode: bicubic;
132	}
133	</style><?php
134	}
135	}
136
137	/**
138	* Filter the image in before the 'title'
139	*
140	* @todo fix error if no posts exist.
141	* For some reason returning before the 'foreach'
142	* still triggers the 'foreach', which is causing
143	* a fatal error when WP_DEBUG is true OR there are
144	* zero posts.
145	*/
146	function columns( $columns, $post_type = 'post' ) {
147	$post_type = get_post_type();
148
149	/**
150	if ( !post_type_supports( $post_type, 'thumbnail' ) )
151	return;
152	*/
153
154	if ( !self::included_post_types( $post_type ) )
155	return;
156
157	if ( !isset( $columns ) && ( empty( $columns ) \|\| !$columns ) )
158	return;
159
160	$new = array();
161
162	foreach( $columns as $key => $title ) {
163	if ( $key == 'title' ) // Put the Thumbnail column before the Title column
164	$new['featured-image'] = __( 'Image', self::domain );
165	$new[$key] = $title;
166	}
167	return $new;
168	}
169
170	/**
171	* Output the image
172	*
173	*/
174	function column_data( $column_name, $post_id ) {
175
176	$post_id = ( !empty( $post_id ) ) ? $post_id : get_the_ID();
177	$post_type = get_post_type();
178
179	if ( !self::included_post_types( $post_type ) )
180	return;
181
182	if ( post_type_supports( $post_type, 'thumbnail' ) && 'featured-image' == $column_name ) {
183	echo '<img alt="' . esc_attr( get_the_title() ) . '" src="' . esc_url( self::get_the_image( $post_id ) ) . '" />';
184	}
185	}
186
187	/**
188	* Add theme support for post-thumbnails
189	* on pages if the feature isn't available
190	*
191	* @since 0.1.1 09/20/2011
192	*/
193	function add_theme_support() {
194	if ( !post_type_supports( 'page', 'thumbnail' ) )
195	add_theme_support( 'post-thumbnails', array( 'post', 'page' ) );
196	}
197
198	/**
199	* Add custom image size
200	*
201	* @since 0.1
202	* @deprecated 0.1.1
203	*/
204	function add_image_size() {
205	_deprecated_function( __FUNCTION__, '0.1.1', '' );
206	return;
207
208	add_image_size( 'featured-column-thumbnail', 32, 32, true );
209	}
210
211	/**
212	* Function to get the image
213	*
214	* @since 0.1
215	* @updated 0.1.3 - Added wp_cache_set()
216	*/
217	function get_the_image( $post_id ) {
218	$post_id = ( !empty( $post_id ) ) ? $post_id : get_the_id();
219
220	$image = '';
221	$image = wp_cache_get( 'featured_column_thumbnail', 'post' );
222
223	if ( !is_array( $image ) )
224	$image = array();
225
226	if ( false == $image ) {
227	if ( has_post_thumbnail() ) {
228	$image = wp_get_attachment_image_src( get_post_thumbnail_id( $post_id ), array( 36, 32 ) );
229	$image = esc_url( $image[0] );
230	} else {
231	$image = esc_url( plugins_url( 'images/default.png', __FILE__ ) );
232	}
233	if ( !is_wp_error( $image ) )
234	wp_cache_set( 'featured_column_thumbnail', $image, 'post', 606024 );
235	}
236	return apply_filters( 'featured_image_column_default_image', $image );
237	}
238
239	/**
240	* Filterable $post_types
241	*
242	* @since 0.1.4 10/17/2011
243	* @props Bill Erickson
244	* @ref http://wordpress.org/support/topic/plugin-featured-image-column-filter-for-post-types
245	*/
246	function included_post_types( $post_type ) {
247	$post_types = array();
248
249	if ( post_type_supports( 'post', 'thumbnail' ) ) $post_types[] = 'post';
250	if ( post_type_supports( 'page', 'thumbnail' ) ) $post_types[] = 'page';
251
252	$post_types = apply_filters( 'featured_image_column_post_types', $post_types );
253
254	if ( !in_array( $post_type, $post_types ) ) {
255	return false;
256	}
257	return true;
258	}
259
260	/**
261	* In version 3.3 this will show if the user hasn't
262	* set page to support 'thumbnails' which is false
263	* by deafult
264	*
265	* @since 0.1.1
266	*/
267	function pointer() {
268
269	if ( self::is_version( '3.3.0' ) && post_type_supports( 'page', 'thumbnail' ) )
270	return;
271
272	$page = get_user_setting( 'featured_image_page_pointer', 0 );
273	if ( !$page ) {
274	wp_enqueue_style( 'wp-pointer' );
275	wp_enqueue_script( array( 'wp-pointer', 'utils' ) );
276	add_action( 'admin_print_footer_scripts', array( __CLASS__, 'pointer_scripts' ) );
277	}
278	}
279
280	/**
281	* Returns the pointer content
282	*/
283	function pointer_scripts() {
284	$pointer_content = __( '<h3>Thanks for installing Featured Image Gallery!</h3>' );
285	$pointer_content .= __( '<p>It looks like you haven\'t set your pages to support <code>thumbnail</code>\'s <br />' );
286	?>
287	<script type="text/javascript">
288	//<![CDATA[
289	jQuery(document).ready( function($) {
290	$('#menu-pages').pointer({
291	content: '<?php echo $pointer_content; ?>',
292	position: {
293	my: 'right top',
294	at: 'left top',
295	offset: '0 -2'
296	},
297	arrow: {
298	edge: 'left',
299	align: 'top',
300	offset: 10
301	},
302	close: function() {
303	setUserSetting( 'featured_image_page_pointer', '1' );
304	}
305	}).pointer('open');
306	});
307	//]]>
308	</script><?php
309	}
310
311	}
312	};
313
314	$featured_image_column = new Featured_Image_Column;
315
316	?>