WordPress/wp-includes/post-template.php

1096 lines
27 KiB
PHP
Raw Normal View History

<?php
/**
* WordPress Post Template Functions
*
* Gets content for the current post in the loop.
*
* @package WordPress
* @subpackage Template
*/
/**
* the_ID() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 0.71
* @uses $id
*/
function the_ID() {
global $id;
echo $id;
}
/**
* get_the_ID() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 2.1.0
* @uses $id
*
* @return unknown
*/
function get_the_ID() {
global $id;
return $id;
}
/**
* the_title() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 0.71
*
* @param unknown_type $before
* @param unknown_type $after
* @param unknown_type $echo
* @return unknown
*/
function the_title($before = '', $after = '', $echo = true) {
$title = get_the_title();
if ( strlen($title) == 0 )
return;
$title = $before . $title . $after;
if ( $echo )
echo $title;
else
return $title;
}
/**
* the_title_attribute() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 2.3.0
*
* @param unknown_type $args
* @return unknown
*/
function the_title_attribute( $args = '' ) {
$title = get_the_title();
if ( strlen($title) == 0 )
return;
$defaults = array('before' => '', 'after' => '', 'echo' => true);
$r = wp_parse_args($args, $defaults);
extract( $r, EXTR_SKIP );
$title = $before . $title . $after;
$title = attribute_escape(strip_tags($title));
if ( $echo )
echo $title;
else
return $title;
}
/**
* get_the_title() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 0.71
*
* @param unknown_type $id
* @return unknown
*/
function get_the_title( $id = 0 ) {
$post = &get_post($id);
$title = $post->post_title;
if ( !is_admin() ) {
if ( !empty($post->post_password) )
$title = sprintf(__('Protected: %s'), $title);
else if ( isset($post->post_status) && 'private' == $post->post_status )
$title = sprintf(__('Private: %s'), $title);
}
return apply_filters( 'the_title', $title );
}
/**
* the_guid() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 1.5.0
*
* @param unknown_type $id
*/
function the_guid( $id = 0 ) {
echo get_the_guid($id);
}
/**
* get_the_guid() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 1.5.0
*
* @param unknown_type $id
* @return unknown
*/
function get_the_guid( $id = 0 ) {
$post = &get_post($id);
return apply_filters('get_the_guid', $post->guid);
}
/**
* the_content() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 0.71
*
* @param unknown_type $more_link_text
* @param unknown_type $stripteaser
* @param unknown_type $more_file
*/
function the_content($more_link_text = NULL, $stripteaser = 0, $more_file = '') {
$content = get_the_content($more_link_text, $stripteaser, $more_file);
$content = apply_filters('the_content', $content);
$content = str_replace(']]>', ']]&gt;', $content);
echo $content;
}
/**
* get_the_content() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 0.71
*
* @param unknown_type $more_link_text
* @param unknown_type $stripteaser
* @param unknown_type $more_file
* @return unknown
*/
function get_the_content($more_link_text = NULL, $stripteaser = 0, $more_file = '') {
global $id, $post, $more, $page, $pages, $multipage, $preview, $pagenow;
if ( NULL == $more_link_text )
$more_link_text = __( '(more...)' );
$output = '';
if ( post_password_required($post) ) { // If post password required and it doesn't match the cookie
$output = get_the_password_form();
return $output;
}
if ( $more_file != '' )
$file = $more_file;
else
$file = $pagenow; //$_SERVER['PHP_SELF'];
if ( $page > count($pages) ) // if the requested page doesn't exist
$page = count($pages); // give them the highest numbered page that DOES exist
$content = $pages[$page-1];
if ( preg_match('/<!--more(.*?)?-->/', $content, $matches) ) {
$content = explode($matches[0], $content, 2);
if ( !empty($matches[1]) && !empty($more_link_text) )
$more_link_text = strip_tags(wp_kses_no_null(trim($matches[1])));
} else {
$content = array($content);
}
if ( (false !== strpos($post->post_content, '<!--noteaser-->') && ((!$multipage) || ($page==1))) )
$stripteaser = 1;
$teaser = $content[0];
if ( ($more) && ($stripteaser) )
$teaser = '';
$output .= $teaser;
if ( count($content) > 1 ) {
if ( $more ) {
$output .= '<span id="more-'.$id.'"></span>'.$content[1];
} else {
$output = balanceTags($output);
if ( ! empty($more_link_text) )
$output .= ' <a href="'. get_permalink() . "#more-$id\" class=\"more-link\">$more_link_text</a>";
}
}
if ( $preview ) // preview fix for javascript bug with foreign languages
$output = preg_replace('/\%u([0-9A-F]{4,4})/e', "'&#'.base_convert('\\1',16,10).';'", $output);
return $output;
}
/**
* the_excerpt() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 0.71
* @uses apply_filters() -
*/
function the_excerpt() {
echo apply_filters('the_excerpt', get_the_excerpt());
}
/**
* get_the_excerpt() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 0.71
*
* @param unknown_type $deprecated
* @return unknown
*/
function get_the_excerpt($deprecated = '') {
global $post;
$output = '';
$output = $post->post_excerpt;
if ( post_password_required($post) ) {
$output = __('There is no excerpt because this is a protected post.');
return $output;
}
return apply_filters('get_the_excerpt', $output);
}
/**
* has_excerpt() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 2.3.0
*
* @param unknown_type $id
* @return unknown
*/
function has_excerpt( $id = 0 ) {
$post = &get_post( $id );
return ( !empty( $post->post_excerpt ) );
}
/**
* Echo the classes for the post div
*
* {@internal Missing Long Description}}
*
* @package WordPress
* @subpackage Post
* @since 2.7
*
* @param string|array $class One or more classes to add to the class list
* @param int $post_id An optional post ID
*/
function post_class( $class = '', $post_id = null ) {
// Separates classes with a single space, collates classes for post DIV
echo 'class="' . join( ' ', get_post_class( $class, $post_id ) ) . '"';
}
/**
* Returns the classes for the post div as an array
*
* {@internal Missing Long Description}}
*
* @package WordPress
* @subpackage Post
* @since 2.7
*
* @param string|array $class One or more classes to add to the class list
* @param int $post_id An optional post ID
* @return array Array of classes
*/
function get_post_class( $class = '', $post_id = null ) {
$post = get_post($post_id);
$classes = array();
$classes[] = $post->post_type;
// sticky for Sticky Posts
if ( is_sticky($post->ID) && is_home())
$classes[] = 'sticky';
// hentry for hAtom compliace
$classes[] = 'hentry';
// Categories
foreach ( (array) get_the_category($post->ID) as $cat ) {
if ( empty($cat->slug ) )
continue;
$classes[] = 'category-' . $cat->slug;
}
// Tags
foreach ( (array) get_the_tags($post->ID) as $tag ) {
if ( empty($tag->slug ) )
continue;
$classes[] = 'tag-' . $tag->slug;
}
if ( !empty($class) ) {
if ( !is_array( $class ) )
$class = preg_split('#\s+#', $class);
$classes = array_merge($classes, $class);
}
return apply_filters('post_class', $classes, $class, $post_id);
}
/**
* Determines if post requires a password and if the correct password has been provided
*
* {@internal Missing Long Description}}
*
* @package WordPress
* @subpackage Post
* @since 2.7
*
* @param int|object $post An optional post. Global $post used if not provided.
* @return bool false if a password is not required or the correct password cookie is present, true otherwise
*/
function post_password_required( $post = null ) {
$post = get_post($post);
if ( empty($post->post_password) )
return false;
if ( !isset($_COOKIE['wp-postpass_' . COOKIEHASH]) )
return true;
if ( $_COOKIE['wp-postpass_' . COOKIEHASH] != $post->post_password )
return true;
return false;
}
/**
* Echo "sticky" CSS class if a post is sticky
*
* {@internal Missing Long Description}}
*
* @package WordPress
* @subpackage Post
* @since 2.7
*
* @param int $post_id An optional post ID
*/
function sticky_class( $post_id = null ) {
if ( !is_sticky($post_id) )
return;
echo " sticky";
}
/**
* wp_link_pages() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 1.2.0
*
* @param unknown_type $args
* @return unknown
*/
function wp_link_pages($args = '') {
$defaults = array(
'before' => '<p>' . __('Pages:'), 'after' => '</p>',
'next_or_number' => 'number', 'nextpagelink' => __('Next page'),
'previouspagelink' => __('Previous page'), 'pagelink' => '%',
'more_file' => '', 'echo' => 1
);
$r = wp_parse_args( $args, $defaults );
extract( $r, EXTR_SKIP );
global $post, $page, $numpages, $multipage, $more, $pagenow;
if ( $more_file != '' )
$file = $more_file;
else
$file = $pagenow;
$output = '';
if ( $multipage ) {
if ( 'number' == $next_or_number ) {
$output .= $before;
for ( $i = 1; $i < ($numpages+1); $i = $i + 1 ) {
$j = str_replace('%',"$i",$pagelink);
$output .= ' ';
if ( ($i != $page) || ((!$more) && ($page==1)) ) {
if ( 1 == $i ) {
$output .= '<a href="' . get_permalink() . '">';
} else {
if ( '' == get_option('permalink_structure') || in_array($post->post_status, array('draft', 'pending')) )
$output .= '<a href="' . get_permalink() . '&amp;page=' . $i . '">';
else
$output .= '<a href="' . trailingslashit(get_permalink()) . user_trailingslashit($i, 'single_paged') . '">';
}
}
$output .= $j;
if ( ($i != $page) || ((!$more) && ($page==1)) )
$output .= '</a>';
}
$output .= $after;
} else {
if ( $more ) {
$output .= $before;
$i = $page - 1;
if ( $i && $more ) {
if ( 1 == $i ) {
$output .= '<a href="' . get_permalink() . '">' . $previouspagelink . '</a>';
} else {
if ( '' == get_option('permalink_structure') || in_array($post->post_status, array('draft', 'pending')) )
$output .= '<a href="' . get_permalink() . '&amp;page=' . $i . '">' . $previouspagelink . '</a>';
else
$output .= '<a href="' . trailingslashit(get_permalink()) . user_trailingslashit($i, 'single_paged') . '">' . $previouspagelink . '</a>';
}
}
$i = $page + 1;
if ( $i <= $numpages && $more ) {
if ( 1 == $i ) {
$output .= '<a href="' . get_permalink() . '">' . $nextpagelink . '</a>';
} else {
if ( '' == get_option('permalink_structure') || in_array($post->post_status, array('draft', 'pending')) )
$output .= '<a href="' . get_permalink() . '&amp;page=' . $i . '">' . $nextpagelink . '</a>';
else
$output .= '<a href="' . trailingslashit(get_permalink()) . user_trailingslashit($i, 'single_paged') . '">' . $nextpagelink . '</a>';
}
}
$output .= $after;
}
}
}
if ( $echo )
echo $output;
return $output;
}
//
// Post-meta: Custom per-post fields.
//
/**
* post_custom() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 1.5.0
*
* @param unknown_type $key
* @return unknown
*/
function post_custom( $key = '' ) {
$custom = get_post_custom();
if ( 1 == count($custom[$key]) )
return $custom[$key][0];
else
return $custom[$key];
}
// this will probably change at some point...
/**
* the_meta() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 1.2.0
* @uses apply_filters()
*/
function the_meta() {
if ( $keys = get_post_custom_keys() ) {
echo "<ul class='post-meta'>\n";
foreach ( (array) $keys as $key ) {
$keyt = trim($key);
if ( '_' == $keyt{0} )
continue;
$values = array_map('trim', get_post_custom_values($key));
$value = implode($values,', ');
echo apply_filters('the_meta_key', "<li><span class='post-meta-key'>$key:</span> $value</li>\n", $key, $value);
}
echo "</ul>\n";
}
}
//
// Pages
//
/**
* wp_dropdown_pages() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 2.1.0
*
* @param unknown_type $args
* @return unknown
*/
function wp_dropdown_pages($args = '') {
$defaults = array(
'depth' => 0, 'child_of' => 0,
'selected' => 0, 'echo' => 1,
'name' => 'page_id', 'show_option_none' => ''
);
$r = wp_parse_args( $args, $defaults );
extract( $r, EXTR_SKIP );
$pages = get_pages($r);
$output = '';
if ( ! empty($pages) ) {
$output = "<select name='$name' id='$name'>\n";
if ( $show_option_none )
$output .= "\t<option value=''>$show_option_none</option>\n";
$output .= walk_page_dropdown_tree($pages, $depth, $r);
$output .= "</select>\n";
}
$output = apply_filters('wp_dropdown_pages', $output);
if ( $echo )
echo $output;
return $output;
}
/**
* wp_list_pages() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 1.5.0
*
* @param unknown_type $args
* @return unknown
*/
function wp_list_pages($args = '') {
$defaults = array(
'depth' => 0, 'show_date' => '',
'date_format' => get_option('date_format'),
'child_of' => 0, 'exclude' => '',
'title_li' => __('Pages'), 'echo' => 1,
'authors' => '', 'sort_column' => 'menu_order, post_title'
);
$r = wp_parse_args( $args, $defaults );
extract( $r, EXTR_SKIP );
$output = '';
$current_page = 0;
// sanitize, mostly to keep spaces out
$r['exclude'] = preg_replace('[^0-9,]', '', $r['exclude']);
// Allow plugins to filter an array of excluded pages
$r['exclude'] = implode(',', apply_filters('wp_list_pages_excludes', explode(',', $r['exclude'])));
// Query pages.
$r['hierarchical'] = 0;
$pages = get_pages($r);
if ( !empty($pages) ) {
if ( $r['title_li'] )
$output .= '<li class="pagenav">' . $r['title_li'] . '<ul>';
global $wp_query;
if ( is_page() || $wp_query->is_posts_page )
$current_page = $wp_query->get_queried_object_id();
$output .= walk_page_tree($pages, $r['depth'], $current_page, $r);
if ( $r['title_li'] )
$output .= '</ul></li>';
}
$output = apply_filters('wp_list_pages', $output);
if ( $r['echo'] )
echo $output;
else
return $output;
}
//
// Page helpers
//
/**
* walk_page_tree() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 2.1.0
*
* @return unknown
*/
function walk_page_tree() {
$walker = new Walker_Page;
$args = func_get_args();
return call_user_func_array(array(&$walker, 'walk'), $args);
}
/**
* walk_page_dropdown_tree() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 2.1.0
*
* @return unknown
*/
function walk_page_dropdown_tree() {
$walker = new Walker_PageDropdown;
$args = func_get_args();
return call_user_func_array(array(&$walker, 'walk'), $args);
}
//
// Attachments
//
/**
* the_attachment_link() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 2.0.0
*
* @param unknown_type $id
* @param unknown_type $fullsize
* @param unknown_type $max_dims
*/
function the_attachment_link($id = 0, $fullsize = false, $deprecated = false, $permalink = false) {
if ( $fullsize )
echo wp_get_attachment_link($id, 'full', $permalink);
else
echo wp_get_attachment_link($id, 'thumbnail', $permalink);
}
// get an attachment page link using an image or icon if possible
function wp_get_attachment_link($id = 0, $size = 'thumbnail', $permalink = false, $icon = false) {
$id = intval($id);
$_post = & get_post( $id );
if ( ('attachment' != $_post->post_type) || !$url = wp_get_attachment_url($_post->ID) )
return __('Missing Attachment');
if ( $permalink )
$url = get_attachment_link($_post->ID);
$post_title = attribute_escape($_post->post_title);
$link_text = wp_get_attachment_image($id, $size, $icon);
if ( !$link_text )
$link_text = $_post->post_title;
return "<a href='$url' title='$post_title'>$link_text</a>";
}
// deprecated - use wp_get_attachment_link()
function get_the_attachment_link($id = 0, $fullsize = false, $max_dims = false, $permalink = false) {
$id = (int) $id;
$_post = & get_post($id);
if ( ('attachment' != $_post->post_type) || !$url = wp_get_attachment_url($_post->ID) )
return __('Missing Attachment');
if ( $permalink )
$url = get_attachment_link($_post->ID);
$post_title = attribute_escape($_post->post_title);
$innerHTML = get_attachment_innerHTML($_post->ID, $fullsize, $max_dims);
return "<a href='$url' title='$post_title'>$innerHTML</a>";
}
// deprecated: use wp_get_attachment_image_src()
/**
* get_attachment_icon_src() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 2.1.0
*
* @param unknown_type $id
* @param unknown_type $fullsize
* @return unknown
*/
function get_attachment_icon_src( $id = 0, $fullsize = false ) {
$id = (int) $id;
if ( !$post = & get_post($id) )
return false;
$file = get_attached_file( $post->ID );
if ( !$fullsize && $src = wp_get_attachment_thumb_url( $post->ID ) ) {
// We have a thumbnail desired, specified and existing
$src_file = basename($src);
$class = 'attachmentthumb';
} elseif ( wp_attachment_is_image( $post->ID ) ) {
// We have an image without a thumbnail
$src = wp_get_attachment_url( $post->ID );
$src_file = & $file;
$class = 'attachmentimage';
} elseif ( $src = wp_mime_type_icon( $post->ID ) ) {
// No thumb, no image. We'll look for a mime-related icon instead.
$icon_dir = apply_filters( 'icon_dir', get_template_directory() . '/images' );
$src_file = $icon_dir . '/' . basename($src);
}
if ( !isset($src) || !$src )
return false;
return array($src, $src_file);
}
// deprecated: use wp_get_attachment_image()
/**
* get_attachment_icon() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 2.0.0
*
* @param unknown_type $id
* @param unknown_type $fullsize
* @param unknown_type $max_dims
* @return unknown
*/
function get_attachment_icon( $id = 0, $fullsize = false, $max_dims = false ) {
$id = (int) $id;
if ( !$post = & get_post($id) )
return false;
if ( !$src = get_attachment_icon_src( $post->ID, $fullsize ) )
return false;
list($src, $src_file) = $src;
// Do we need to constrain the image?
if ( ($max_dims = apply_filters('attachment_max_dims', $max_dims)) && file_exists($src_file) ) {
$imagesize = getimagesize($src_file);
if (($imagesize[0] > $max_dims[0]) || $imagesize[1] > $max_dims[1] ) {
$actual_aspect = $imagesize[0] / $imagesize[1];
$desired_aspect = $max_dims[0] / $max_dims[1];
if ( $actual_aspect >= $desired_aspect ) {
$height = $actual_aspect * $max_dims[0];
$constraint = "width='{$max_dims[0]}' ";
$post->iconsize = array($max_dims[0], $height);
} else {
$width = $max_dims[1] / $actual_aspect;
$constraint = "height='{$max_dims[1]}' ";
$post->iconsize = array($width, $max_dims[1]);
}
} else {
$post->iconsize = array($imagesize[0], $imagesize[1]);
$constraint = '';
}
} else {
$constraint = '';
}
$post_title = attribute_escape($post->post_title);
$icon = "<img src='$src' title='$post_title' alt='$post_title' $constraint/>";
return apply_filters( 'attachment_icon', $icon, $post->ID );
}
// deprecated: use wp_get_attachment_image()
/**
* get_attachment_innerHTML() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 2.0.0
*
* @param unknown_type $id
* @param unknown_type $fullsize
* @param unknown_type $max_dims
* @return unknown
*/
function get_attachment_innerHTML($id = 0, $fullsize = false, $max_dims = false) {
$id = (int) $id;
if ( !$post = & get_post($id) )
return false;
if ( $innerHTML = get_attachment_icon($post->ID, $fullsize, $max_dims))
return $innerHTML;
$innerHTML = attribute_escape($post->post_title);
return apply_filters('attachment_innerHTML', $innerHTML, $post->ID);
}
/**
* prepend_attachment() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 2.0.0
*
* @param unknown_type $content
* @return unknown
*/
function prepend_attachment($content) {
global $post;
if ( empty($post->post_type) || $post->post_type != 'attachment' )
return $content;
$p = '<p class="attachment">';
// show the medium sized image representation of the attachment if available, and link to the raw file
$p .= wp_get_attachment_link(0, 'medium', false);
$p .= '</p>';
$p = apply_filters('prepend_attachment', $p);
return "$p\n$content";
}
//
// Misc
//
/**
* get_the_password_form() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 1.0.0
*
* @return unknown
*/
function get_the_password_form() {
global $post;
$label = 'pwbox-'.(empty($post->ID) ? rand() : $post->ID);
$output = '<form action="' . get_option('siteurl') . '/wp-pass.php" method="post">
<p>' . __("This post is password protected. To view it please enter your password below:") . '</p>
<p><label for="' . $label . '">' . __("Password:") . ' <input name="post_password" id="' . $label . '" type="password" size="20" /></label> <input type="submit" name="Submit" value="' . __("Submit") . '" /></p>
</form>
';
return $output;
}
/**
* is_page_template() - Determine wether or not we are in a page template
*
* This template tag allows you to determine wether or not you are in a page template.
* You can optional provide a template name and then the check will be specific to
* that template.
*
* @since 2.5.0
* @uses $wp_query
*
* @param string $template The specific template name if specific matching is required
* @return bool False on failure, true if success
*/
function is_page_template($template = '') {
if (!is_page()) {
return false;
}
global $wp_query;
$page = $wp_query->get_queried_object();
$custom_fields = get_post_custom_values('_wp_page_template',$page->ID);
$page_template = $custom_fields[0];
// We have no argument passed so just see if a page_template has been specified
if ( empty( $template ) ) {
if (!empty( $page_template ) ) {
return true;
}
} elseif ( $template == $page_template) {
return true;
}
return false;
}
/**
* wp_post_revision_title() - returns formatted datetimestamp of a revision (linked to that revisions's page)
*
* @package WordPress
* @subpackage Post Revisions
* @since 2.6
*
* @uses date_i18n()
*
* @param int|object $revision revision ID or revision object
* @param bool $link optional Link to revisions's page?
* @return string i18n formatted datetimestamp or localized 'Corrent Revision'
*/
function wp_post_revision_title( $revision, $link = true ) {
if ( !$revision = get_post( $revision ) )
return $revision;
if ( !in_array( $revision->post_type, array( 'post', 'page', 'revision' ) ) )
return false;
$datef = _c( 'j F, Y @ G:i|revision date format');
$autosavef = __( '%s [Autosave]' );
$currentf = __( '%s [Current Revision]' );
$date = date_i18n( $datef, strtotime( $revision->post_modified_gmt . ' +0000' ) );
if ( $link && current_user_can( 'edit_post', $revision->ID ) && $link = get_edit_post_link( $revision->ID ) )
$date = "<a href='$link'>$date</a>";
if ( !wp_is_post_revision( $revision ) )
$date = sprintf( $currentf, $date );
elseif ( wp_is_post_autosave( $revision ) )
$date = sprintf( $autosavef, $date );
return $date;
}
/**
* wp_list_post_revisions() - echoes list of a post's revisions
*
* Can output either a UL with edit links or a TABLE with diff interface, and restore action links
*
* Second argument controls parameters:
* (bool) parent : include the parent (the "Current Revision") in the list
* (string) format : 'list' or 'form-table'. 'list' outputs UL, 'form-table' outputs TABLE with UI
* (int) right : what revision is currently being viewed - used in form-table format
* (int) left : what revision is currently being diffed against right - used in form-table format
*
* @package WordPress
* @subpackage Post Revisions
* @since 2.6
*
* @uses wp_get_post_revisions()
* @uses wp_post_revision_title()
* @uses get_edit_post_link()
* @uses get_author_name()
*
* @param int|object $post_id post ID or post object
* @param string|array $args see description @see wp_parse_args()
*/
function wp_list_post_revisions( $post_id = 0, $args = null ) { // TODO? split into two functions (list, form-table) ?
if ( !$post = get_post( $post_id ) )
return;
$defaults = array( 'parent' => false, 'right' => false, 'left' => false, 'format' => 'list', 'type' => 'all' );
extract( wp_parse_args( $args, $defaults ), EXTR_SKIP );
switch ( $type ) {
case 'autosave' :
if ( !$autosave = wp_get_post_autosave( $post->ID ) )
return;
$revisions = array( $autosave );
break;
case 'revision' : // just revisions - remove autosave later
case 'all' :
default :
if ( !$revisions = wp_get_post_revisions( $post->ID ) )
return;
break;
}
$titlef = _c( '%1$s by %2$s|post revision 1:datetime, 2:name' );
if ( $parent )
array_unshift( $revisions, $post );
$rows = '';
$class = false;
$can_edit_post = current_user_can( 'edit_post', $post->ID );
foreach ( $revisions as $revision ) {
if ( !current_user_can( 'read_post', $revision->ID ) )
continue;
if ( 'revision' === $type && wp_is_post_autosave( $revision ) )
continue;
$date = wp_post_revision_title( $revision );
$name = get_author_name( $revision->post_author );
if ( 'form-table' == $format ) {
if ( $left )
$left_checked = $left == $revision->ID ? ' checked="checked"' : '';
else
$left_checked = $right_checked ? ' checked="checked"' : ''; // [sic] (the next one)
$right_checked = $right == $revision->ID ? ' checked="checked"' : '';
$class = $class ? '' : " class='alternate'";
if ( $post->ID != $revision->ID && $can_edit_post )
$actions = '<a href="' . wp_nonce_url( add_query_arg( array( 'revision' => $revision->ID, 'diff' => false, 'action' => 'restore' ) ), "restore-post_$post->ID|$revision->ID" ) . '">' . __( 'Restore' ) . '</a>';
else
$actions = '';
$rows .= "<tr$class>\n";
$rows .= "\t<th style='white-space: nowrap' scope='row'><input type='radio' name='left' value='$revision->ID'$left_checked /><input type='radio' name='right' value='$revision->ID'$right_checked /></th>\n";
$rows .= "\t<td>$date</td>\n";
$rows .= "\t<td>$name</td>\n";
$rows .= "\t<td class='action-links'>$actions</td>\n";
$rows .= "</tr>\n";
} else {
$title = sprintf( $titlef, $date, $name );
$rows .= "\t<li>$title</li>\n";
}
}
if ( 'form-table' == $format ) : ?>
<form action="revision.php" method="get">
<div class="tablenav">
<div class="alignleft">
<input type="submit" class="button-secondary" value="<?php _e( 'Compare Revisions' ); ?>" />
<input type="hidden" name="action" value="diff" />
</div>
</div>
<br class="clear" />
<table class="widefat post-revisions">
<col />
<col style="width: 33%" />
<col style="width: 33%" />
<col style="width: 33%" />
<thead>
<tr>
<th scope="col"></th>
<th scope="col"><?php _e( 'Date Created' ); ?></th>
<th scope="col"><?php _e( 'Author' ); ?></th>
<th scope="col" class="action-links"><?php _e( 'Actions' ); ?></th>
</tr>
</thead>
<tbody>
<?php echo $rows; ?>
</tbody>
</table>
</form>
<?php
else :
echo "<ul class='post-revisions'>\n";
echo $rows;
echo "</ul>";
endif;
}