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To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
This hook occurs 3 times in this file.
| Line | Code |
|---|---|
| 172 | function end_lvl(&$output, $depth, $args) { |
| 173 | $indent = str_repeat("\t", $depth); |
| 174 | $output .= "$indent</ul>\n"; |
| 175 | } |
| 176 | |
| 177 | function start_el(&$output, $category, $depth, $args) { |
| 178 | extract($args); |
| 179 | |
| 180 | $class = in_array( $category->term_id, $popular_cats ) ? ' class="popular-category"' : ''; |
| 181 | $output .= "\n<li id='category-$category->term_id'$class>" . '<label for="in-category-' . $category->term_id . '" class="selectit"><input value="' . $category->term_id . '" type="checkbox" name="post_category[]" id="in-category-' . $category->term_id . '"' . (in_array( $category->term_id, $selected_cats ) ? ' checked="checked"' : "" ) . '/> ' . wp_specialchars( apply_filters('the_category', $category->name )) . '</label>'; |
| 182 | } |
| 183 | |
| 184 | function end_el(&$output, $category, $depth, $args) { |
| 185 | $output .= "</li>\n"; |
| 186 | } |
| 187 | } |
| 188 | |
| 189 | function wp_category_checklist( $post_id = 0, $descendants_and_self = 0, $selected_cats = false, $popular_cats = false ) { |
| 190 | $walker = new Walker_Category_Checklist; |
| Line | Code |
| 240 | $popular_ids[] = $category->term_id; |
| 241 | if ( !$echo ) // hack for AJAX use |
| 242 | continue; |
| 243 | $id = "popular-category-$category->term_id"; |
| 244 | ?> |
| 245 | |
| 246 | <li id="<?php echo $id; ?>" class="popular-category"> |
| 247 | <label class="selectit" for="in-<?php echo $id; ?>"> |
| 248 | <input id="in-<?php echo $id; ?>" type="checkbox" value="<?php echo (int) $category->term_id; ?>" /> |
| 249 | <?php echo wp_specialchars( apply_filters( 'the_category', $category->name ) ); ?> |
| 250 | </label> |
| 251 | </li> |
| 252 | |
| 253 | <?php |
| 254 | } |
| 255 | return $popular_ids; |
| 256 | } |
| 257 | |
| 258 | // Deprecated. Use wp_link_category_checklist |
| Line | Code |
| 275 | } |
| 276 | |
| 277 | $categories = get_terms('link_category', 'orderby=count&hide_empty=0'); |
| 278 | |
| 279 | if ( empty($categories) ) |
| 280 | return; |
| 281 | |
| 282 | foreach ( $categories as $category ) { |
| 283 | $cat_id = $category->term_id; |
| 284 | $name = wp_specialchars( apply_filters('the_category', $category->name)); |
| 285 | $checked = in_array( $cat_id, $checked_categories ); |
| 286 | echo '<li id="link-category-', $cat_id, '"><label for="in-link-category-', $cat_id, '" class="selectit"><input value="', $cat_id, '" type="checkbox" name="link_category[]" id="in-link-category-', $cat_id, '"', ($checked ? ' checked="checked"' : "" ), '/> ', $name, "</label></li>"; |
| 287 | } |
| 288 | } |
| 289 | |
| 290 | // Tag stuff |
| 291 | |
| 292 | // Returns a single tag row (see tag_rows below) |
| 293 | // Note: this is also used in admin-ajax.php! |