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alazhar
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wp-admin/revision.php
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223
wp-admin/revision.php
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<?php
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/**
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* Revisions administration panel.
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*
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* @package WordPress
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* @subpackage Administration
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*/
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/** WordPress Administration Bootstrap */
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require_once('./admin.php');
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wp_enqueue_script('list-revisions');
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wp_reset_vars(array('revision', 'left', 'right', 'action'));
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$revision_id = absint($revision);
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$left = absint($left);
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$right = absint($right);
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$redirect = 'edit.php';
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switch ( $action ) :
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case 'restore' :
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if ( !$revision = wp_get_post_revision( $revision_id ) )
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break;
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if ( !current_user_can( 'edit_post', $revision->post_parent ) )
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break;
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if ( !$post = get_post( $revision->post_parent ) )
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break;
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// Revisions disabled and we're not looking at an autosave
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if ( ( ! WP_POST_REVISIONS || !post_type_supports($post->post_type, 'revisions') ) && !wp_is_post_autosave( $revision ) ) {
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$redirect = 'edit.php?post_type=' . $post->post_type;
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break;
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}
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check_admin_referer( "restore-post_$post->ID|$revision->ID" );
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wp_restore_post_revision( $revision->ID );
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$redirect = add_query_arg( array( 'message' => 5, 'revision' => $revision->ID ), get_edit_post_link( $post->ID, 'url' ) );
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break;
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case 'diff' :
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if ( !$left_revision = get_post( $left ) )
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break;
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if ( !$right_revision = get_post( $right ) )
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break;
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if ( !current_user_can( 'read_post', $left_revision->ID ) || !current_user_can( 'read_post', $right_revision->ID ) )
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break;
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// If we're comparing a revision to itself, redirect to the 'view' page for that revision or the edit page for that post
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if ( $left_revision->ID == $right_revision->ID ) {
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$redirect = get_edit_post_link( $left_revision->ID );
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include( './js/revisions-js.php' );
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break;
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}
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// Don't allow reverse diffs?
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if ( strtotime($right_revision->post_modified_gmt) < strtotime($left_revision->post_modified_gmt) ) {
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$redirect = add_query_arg( array( 'left' => $right, 'right' => $left ) );
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break;
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}
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if ( $left_revision->ID == $right_revision->post_parent ) // right is a revision of left
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$post =& $left_revision;
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elseif ( $left_revision->post_parent == $right_revision->ID ) // left is a revision of right
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$post =& $right_revision;
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elseif ( $left_revision->post_parent == $right_revision->post_parent ) // both are revisions of common parent
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$post = get_post( $left_revision->post_parent );
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else
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break; // Don't diff two unrelated revisions
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if ( ! WP_POST_REVISIONS || !post_type_supports($post->post_type, 'revisions') ) { // Revisions disabled
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if (
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// we're not looking at an autosave
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( !wp_is_post_autosave( $left_revision ) && !wp_is_post_autosave( $right_revision ) )
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||
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// we're not comparing an autosave to the current post
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( $post->ID !== $left_revision->ID && $post->ID !== $right_revision->ID )
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) {
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$redirect = 'edit.php?post_type=' . $post->post_type;
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break;
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}
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}
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if (
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// They're the same
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$left_revision->ID == $right_revision->ID
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||
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// Neither is a revision
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( !wp_get_post_revision( $left_revision->ID ) && !wp_get_post_revision( $right_revision->ID ) )
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)
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break;
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$post_title = '<a href="' . get_edit_post_link() . '">' . get_the_title() . '</a>';
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$h2 = sprintf( __( 'Compare Revisions of “%1$s”' ), $post_title );
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$title = __( 'Revisions' );
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$left = $left_revision->ID;
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$right = $right_revision->ID;
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$redirect = false;
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break;
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case 'view' :
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default :
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if ( !$revision = wp_get_post_revision( $revision_id ) )
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break;
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if ( !$post = get_post( $revision->post_parent ) )
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break;
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if ( !current_user_can( 'read_post', $revision->ID ) || !current_user_can( 'read_post', $post->ID ) )
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break;
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// Revisions disabled and we're not looking at an autosave
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if ( ( ! WP_POST_REVISIONS || !post_type_supports($post->post_type, 'revisions') ) && !wp_is_post_autosave( $revision ) ) {
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$redirect = 'edit.php?post_type=' . $post->post_type;
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break;
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}
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$post_title = '<a href="' . get_edit_post_link() . '">' . get_the_title() . '</a>';
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$revision_title = wp_post_revision_title( $revision, false );
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$h2 = sprintf( __( 'Revision for “%1$s” created on %2$s' ), $post_title, $revision_title );
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$title = __( 'Revisions' );
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// Sets up the diff radio buttons
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$left = $revision->ID;
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$right = $post->ID;
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$redirect = false;
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break;
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endswitch;
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// Empty post_type means either malformed object found, or no valid parent was found.
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if ( !$redirect && empty($post->post_type) )
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$redirect = 'edit.php';
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if ( !empty($redirect) ) {
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wp_redirect( $redirect );
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exit;
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}
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// This is so that the correct "Edit" menu item is selected.
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if ( !empty($post->post_type) && 'post' != $post->post_type )
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$parent_file = $submenu_file = 'edit.php?post_type=' . $post->post_type;
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else
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$parent_file = $submenu_file = 'edit.php';
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require_once( './admin-header.php' );
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?>
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<div class="wrap">
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<h2 class="long-header"><?php echo $h2; ?></h2>
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<table class="form-table ie-fixed">
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<col class="th" />
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<?php if ( 'diff' == $action ) : ?>
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<tr id="revision">
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<th scope="row"></th>
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<th scope="col" class="th-full">
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<span class="alignleft"><?php printf( __('Older: %s'), wp_post_revision_title( $left_revision ) ); ?></span>
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<span class="alignright"><?php printf( __('Newer: %s'), wp_post_revision_title( $right_revision ) ); ?></span>
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</th>
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</tr>
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<?php endif;
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// use get_post_to_edit filters?
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$identical = true;
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foreach ( _wp_post_revision_fields() as $field => $field_title ) :
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if ( 'diff' == $action ) {
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$left_content = apply_filters( "_wp_post_revision_field_$field", $left_revision->$field, $field );
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$right_content = apply_filters( "_wp_post_revision_field_$field", $right_revision->$field, $field );
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if ( !$content = wp_text_diff( $left_content, $right_content ) )
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continue; // There is no difference between left and right
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$identical = false;
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} else {
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add_filter( "_wp_post_revision_field_$field", 'htmlspecialchars' );
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$content = apply_filters( "_wp_post_revision_field_$field", $revision->$field, $field );
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}
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?>
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<tr id="revision-field-<?php echo $field; ?>">
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<th scope="row"><?php echo esc_html( $field_title ); ?></th>
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<td><div class="pre"><?php echo $content; ?></div></td>
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</tr>
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<?php
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endforeach;
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if ( 'diff' == $action && $identical ) :
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?>
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<tr><td colspan="2"><div class="updated"><p><?php _e( 'These revisions are identical.' ); ?></p></div></td></tr>
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<?php
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endif;
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?>
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</table>
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<br class="clear" />
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<h3><?php echo $title; ?></h3>
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<?php
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$args = array( 'format' => 'form-table', 'parent' => true, 'right' => $right, 'left' => $left );
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if ( ! WP_POST_REVISIONS || !post_type_supports($post->post_type, 'revisions') )
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$args['type'] = 'autosave';
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wp_list_post_revisions( $post, $args );
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?>
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</div>
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<?php
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require_once( './admin-footer.php' );
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