category-posts / cat-posts.php

cat-posts.php in Category Posts Block 1.2.1, at cat-posts.php

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1	<?php
2	/*
3	Plugin Name: Category Posts Widget
4	Plugin URI: http://jameslao.com/
5	Description: Adds a widget that can display a specified number of posts from a single category. Can also set how many widgets to show.
6	Author: James Lao
7	Version: 1.2.1
8	Author URI: http://jameslao.com/
9	*/
10
11	// The widget itself.
12	function nk_cat_posts_widget($args, $number = 1) {
13	extract($args);
14	$options = get_option('widget_cat_posts');
15	$catID = empty($options[$number]['cat']) ? 1 : $options[$number]['cat'];
16	$titleLink = empty($options[$number]['titleLink']) ? FALSE : $options[$number]['titleLink'];
17
18	// If not title, use the name of the category.
19	if( empty($options[$number]['title']) ) {
20	$categoryInfo = get_category($catID);
21	$title = $categoryInfo->name;
22	} else {
23	$title = $options[$number]['title'];
24	}
25
26	$num = $options[$number]['num'] > 15 ? 15 : $options[$number]['num'];
27
28	echo $before_widget;
29	echo $before_title;
30
31	if( $titleLink ) {
32	echo '<a href="' . get_category_link($catID) . '">' . $title . '</a>';
33	} else {
34	echo $title;
35	}
36
37	echo $after_title;
38	echo '<ul>';
39	nk_cat_posts($catID, $num);
40	echo '</ul>';
41	echo $after_widget;
42	}
43
44	// The control dialog.
45	function nk_cat_posts_widget_control($number) {
46	$options = $newoptions = get_option('widget_cat_posts');
47	if ( $_POST["cat-posts-title-" . $number] \|\| $_POST["show-cat-id-" . $number] \|\| $_POST["cat-posts-num-" . $number] ) {
48	$newoptions[$number]['title'] = strip_tags(stripslashes($_POST["cat-posts-title-" . $number]));
49	$newoptions[$number]['cat'] = $_POST["show-cat-id-" . $number];
50	$newoptions[$number]['num'] = is_numeric($_POST["cat-posts-num-" . $number]) && $_POST["cat-posts-num-" . $number]!=0 ? $_POST["cat-posts-num-" . $number] : 5;
51	$newoptions[$number]['titleLink'] = $_POST["cat-posts-title-link-" . $number] ? TRUE : FALSE;
52	}
53	if ( $options != $newoptions ) {
54	$options = $newoptions;
55	update_option('widget_cat_posts', $options);
56	}
57
58	echo '<p><label for="cat-posts-title-' . $number . '">Title: <input style="width:200px;" id="cat-posts-title-' . $number . '" name="cat-posts-title-' . $number . '" type="text" value="' . $options[$number]['title'] . '" /></label></p>';
59	echo '<p><label>Show posts in ';
60	wp_dropdown_categories(array('name'=>'show-cat-id-' . $number, 'selected'=>$options[$number]['cat']));
61	echo '</label></p>';
62	echo '<p><label for="cat-posts-num-' . $number . '">Number of posts to show: <input size="3" id="cat-posts-num-' . $number . '" name="cat-posts-num-' . $number . '" type="text" value="' . $options[$number]['num'] . '" /></label> (max 15)</p>';
63
64	echo '<p><label for="cat-posts-title-link-' . $number . '">Link widget title to category page? <input name="cat-posts-title-link-' . $number . '" type="checkbox"';
65	echo $options[$number]['titleLink'] ? ' checked="checked"></label></p>' : '></label></p>';
66	}
67
68	// Displays the dialog to set how many widgets.
69	function nk_cat_posts_widget_page() {
70	$options = $newoptions = get_option('widget_cat_posts');
71	?>
72	<div class="wrap">
73	<form method="post">
74	<h2>Category Posts Widgets</h2>
75	<p style="line-height: 30px;">How many category posts widgets would you like?
76	<select id="cat-posts-number" name="cat-posts-number" value="<?php echo $options['num_of_widgets']; ?>">
77	<?php for ( $i = 1; $i <= 20; ++$i ) echo "<option value='$i' ".($options['num_of_widgets']==$i ? "selected='selected'" : '').">$i</option>"; ?>
78	</select>
79	<span class="submit"><input type="submit" name="cat-posts-number-submit" id="cat-posts-number-submit" value="<?php echo attribute_escape(__('Save')); ?>" /></span></p>
80	</form>
81	</div>
82	<?php
83	}
84
85	// Saves how many widgets to be displayed.
86	function nk_cat_posts_widget_setup() {
87	$options = $newoptions = get_option('widget_cat_posts');
88	if ( isset($_POST['cat-posts-number-submit']) ) {
89	$number = (int) $_POST['cat-posts-number'];
90	if ( $number > 20 ) $number = 20;
91	if ( $number < 1 ) $number = 1;
92	$newoptions['num_of_widgets'] = $number;
93	}
94	if ( $options != $newoptions ) {
95	$options = $newoptions;
96	update_option('widget_cat_posts', $options);
97	nk_cat_posts_widget_register($options['num_of_widgets']);
98	}
99	}
100
101	// Registers the widget(s).
102	function nk_cat_posts_widget_register() {
103	$options = get_option('widget_cat_posts');
104	$num_of_widgets = $options['num_of_widgets'];
105	if ( $num_of_widgets < 1 ) $num_of_widgets = 1;
106	if ( $num_of_widgets > 20 ) $num_of_widgets = 20;
107	$dims = array('width' => 300, 'height' => 160);
108	$class = array('classname' => 'widget_cat_posts');
109	for ($i = 1; $i <= 20; $i++) {
110	$name = sprintf('Category Posts %d', $i);
111	$id = "cat-posts-$i";
112	wp_register_sidebar_widget($id, $name, $i <= $num_of_widgets ? 'nk_cat_posts_widget' : '', $class, $i);
113	wp_register_widget_control($id, $name, $i <= $num_of_widgets ? 'nk_cat_posts_widget_control' : '', $dims, $i);
114	}
115	add_action('sidebar_admin_setup', 'nk_cat_posts_widget_setup');
116	add_action('sidebar_admin_page', 'nk_cat_posts_widget_page');
117	}
118
119	function nk_cat_posts($cat, $num = 5) {
120	$catposts = get_posts('numberposts='.$num.'&category='.$cat);
121
122	foreach($catposts as $post) {
123	echo '<li><a href="'.get_permalink($post).'">'.$post->post_title.'</a></li>';
124	}
125	}
126
127	add_action('widgets_init', 'nk_cat_posts_widget_register');
128
129	?>