function display()
{
global $PAGE, $COURSE;
$editing = $PAGE->user_is_editing();
$pageblocks = page_blocks_setup();
/// Make sure we can see this page
if (!($this->page->display & DISP_PUBLISH) and !(has_capability('format/page:editpages', $this->context) and $editing)) {
error(get_string('thispageisnotpublished', 'format_page'));
}
/// Finally, we can print the page
if ($editing) {
$PAGE->print_tabs('layout');
page_print_jump_menu();
page_print_add_mods_form($this->page, $COURSE);
$class = 'format-page editing';
} else {
$class = 'format-page';
}
echo '<table id="layout-table" class="' . $class . '" cellspacing="0" summary="' . get_string('layouttable') . '">';
/// Check if the page is locked, if so, print lock message, otherwise print three columns
if (page_is_locked($this->page)) {
echo '<tr><td colspan="3">';
page_print_lock_prerequisites($this->page);
echo '</tr></td>';
} else {
echo '<tr>';
if (blocks_have_content($pageblocks, BLOCK_POS_LEFT)) {
page_print_position($pageblocks, BLOCK_POS_LEFT, $this->page->prefleftwidth);
}
page_print_position($pageblocks, BLOCK_POS_CENTER, '100%');
if (blocks_have_content($pageblocks, BLOCK_POS_RIGHT)) {
page_print_position($pageblocks, BLOCK_POS_RIGHT, $this->page->prefrightwidth);
}
echo '</tr>';
}
/// Silently attempts to call a function from the block_recent_history block
@block_method_result('recent_history', 'block_recent_history_record', $this->page);
/// Display navigation buttons
if ($this->page->showbuttons) {
$nav = page_get_next_previous_pages($this->page->id, $this->page->courseid);
$buttons = '';
if ($nav->prev and $this->page->showbuttons & BUTTON_PREV) {
$title = get_string('previous', 'format_page', page_get_name($nav->prev));
$buttons .= '<span class="prevpage"><a href="' . $PAGE->url_build('page', $nav->prev->id) . "\" title=\"{$title}\">{$title}</a></span>";
}
if ($nav->next and $this->page->showbuttons & BUTTON_NEXT) {
$title = get_string('next', 'format_page', page_get_name($nav->next));
$buttons .= '<span class="nextpage"><a href="' . $PAGE->url_build('page', $nav->next->id) . "\" title=\"{$title}\">{$title}</a></span>";
}
// Make sure we have something to print
if (!empty($buttons)) {
echo "\n<tr><td></td><td>{$buttons}</td><td></td></tr>\n";
}
}
echo '</table>';
}
/**
* Checks to see if the page has the proper
* display value to be included into the menu
* rendering.
*
* The page must be pusblished and be set to display
* in the course menu and not be locked with a
* non-visible lock.
*
* @param object $page Page object
* @return boolean
**/
protected function dont_display($page)
{
if (DISP_MENU & $page->display and DISP_PUBLISH & $page->display and !(page_is_locked($page) and !page_is_visible_lock($page))) {
return false;
}
return true;
}
/**
* This function returns the page objects of the next/previous pages
* relative to the passed page ID
*
* @param int $pageid Base next/previous off of this page ID
* @param int $courseid (Optional) ID of the course
*/
function page_get_next_previous_pages($pageid, $courseid = NULL)
{
global $COURSE;
if ($courseid === NULL) {
$courseid = $COURSE->id;
}
$return = new stdClass();
$return->prev = false;
$return->next = false;
if ($pages = page_get_all_pages($courseid, 'flat')) {
// Remove any unpublished pages
foreach ($pages as $id => $page) {
if (!($page->display & DISP_PUBLISH)) {
unset($pages[$id]);
}
}
if (!empty($pages)) {
// Search for the pages
$get = false;
$locked = array();
foreach ($pages as $id => $page) {
if (in_array($page->parent, $locked) or page_is_locked($page) and !page_is_visible_lock($page)) {
$locked[] = $page->id;
}
if ($get and !in_array($page->id, $locked)) {
// We have seen the id we're looking for
$return->next = $page;
break;
// quit this business
}
if ($id == $pageid) {
// We've found the id that we are looking for
$get = true;
}
if (!$get and !in_array($page->id, $locked)) {
// Only if we haven't found what we're looking for
$return->prev = $page;
}
}
}
}
return $return;
}
