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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Book view page
*
* @package mod_book
* @copyright 2004-2011 Petr Skoda {@link http://skodak.org}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
require(__DIR__.'/../../config.php');
require_once(__DIR__.'/lib.php');
require_once(__DIR__.'/locallib.php');
require_once($CFG->libdir.'/completionlib.php');
$id = optional_param('id', 0, PARAM_INT); // Course Module ID
$bid = optional_param('b', 0, PARAM_INT); // Book id
$chapterid = optional_param('chapterid', 0, PARAM_INT); // Chapter ID
$edit = optional_param('edit', -1, PARAM_BOOL); // Edit mode
// =========================================================================
// security checks START - teachers edit; students view
// =========================================================================
if ($id) {
$cm = get_coursemodule_from_id('book', $id, 0, false, MUST_EXIST);
$course = $DB->get_record('course', array('id'=>$cm->course), '*', MUST_EXIST);
$book = $DB->get_record('book', array('id'=>$cm->instance), '*', MUST_EXIST);
} else {
$book = $DB->get_record('book', array('id'=>$bid), '*', MUST_EXIST);
$cm = get_coursemodule_from_instance('book', $book->id, 0, false, MUST_EXIST);
$course = $DB->get_record('course', array('id'=>$cm->course), '*', MUST_EXIST);
$id = $cm->id;
}
require_course_login($course, true, $cm);
$context = context_module::instance($cm->id);
require_capability('mod/book:read', $context);
$allowedit = has_capability('mod/book:edit', $context);
$viewhidden = has_capability('mod/book:viewhiddenchapters', $context);
if ($allowedit) {
if ($edit != -1 and confirm_sesskey()) {
$USER->editing = $edit;
} else {
if (isset($USER->editing)) {
$edit = $USER->editing;
} else {
$edit = 0;
}
}
} else {
$edit = 0;
}
// read chapters
$chapters = book_preload_chapters($book);
if ($allowedit and !$chapters) {
redirect('edit.php?cmid='.$cm->id); // No chapters - add new one.
}
// Check chapterid and read chapter data
if ($chapterid == '0') { // Go to first chapter if no given.
// Trigger course module viewed event.
book_view($book, null, false, $course, $cm, $context);
foreach ($chapters as $ch) {
if ($edit || ($ch->hidden && $viewhidden)) {
$chapterid = $ch->id;
break;
}
if (!$ch->hidden) {
$chapterid = $ch->id;
break;
}
}
}
$courseurl = new moodle_url('/course/view.php', array('id' => $course->id));
// No content in the book.
if (!$chapterid) {
$PAGE->set_url('/mod/book/view.php', array('id' => $id));
notice(get_string('nocontent', 'mod_book'), $courseurl->out(false));
}
// Chapter doesnt exist or it is hidden for students
if ((!$chapter = $DB->get_record('book_chapters', array('id' => $chapterid, 'bookid' => $book->id))) or ($chapter->hidden and !$viewhidden)) {
print_error('errorchapter', 'mod_book', $courseurl);
}
$PAGE->set_url('/mod/book/view.php', array('id'=>$id, 'chapterid'=>$chapterid));
// Unset all page parameters.
unset($id);
unset($bid);
unset($chapterid);
// Read standard strings.
$strbooks = get_string('modulenameplural', 'mod_book');
$strbook = get_string('modulename', 'mod_book');
$strtoc = get_string('toc', 'mod_book');
// prepare header
$pagetitle = $book->name . ": " . $chapter->title;
$PAGE->set_title($pagetitle);
$PAGE->set_heading($course->fullname);
book_add_fake_block($chapters, $chapter, $book, $cm, $edit);
// prepare chapter navigation icons
$previd = null;
$prevtitle = null;
$navprevtitle = null;
$nextid = null;
$nexttitle = null;
$navnexttitle = null;
$last = null;
foreach ($chapters as $ch) {
if (!$edit and ($ch->hidden && !$viewhidden)) {
continue;
}
if ($last == $chapter->id) {
$nextid = $ch->id;
$nexttitle = book_get_chapter_title($ch->id, $chapters, $book, $context);
$navnexttitle = get_string('navnexttitle', 'mod_book', $nexttitle);
break;
}
if ($ch->id != $chapter->id) {
$previd = $ch->id;
$prevtitle = book_get_chapter_title($ch->id, $chapters, $book, $context);
$navprevtitle = get_string('navprevtitle', 'mod_book', $prevtitle);
}
$last = $ch->id;
}
if ($book->navstyle) {
$navprevicon = right_to_left() ? 'nav_next' : 'nav_prev';
$navnexticon = right_to_left() ? 'nav_prev' : 'nav_next';
$chnavigation = '';
if ($previd) {
$navprev = get_string('navprev', 'book');
if ($book->navstyle == 1) {
$chnavigation .= '<a title="' . $navprevtitle . '" class="bookprev" href="view.php?id=' .
$cm->id . '&chapterid=' . $previd . '">' .
$OUTPUT->pix_icon($navprevicon, $navprevtitle, 'mod_book') . '</a>';
} else {
$chnavigation .= '<a title="' . $navprev . '" class="bookprev" href="view.php?id=' .
$cm->id . '&chapterid=' . $previd . '">' .
'<span class="chaptername"><span class="arrow">' . $OUTPUT->larrow() . ' </span></span>' .
$navprev . ': <span class="chaptername">' . $prevtitle . '</span></a>';
}
}
if ($nextid) {
$navnext = get_string('navnext', 'book');
if ($book->navstyle == 1) {
$chnavigation .= '<a title="' . $navnexttitle . '" class="booknext" href="view.php?id=' .
$cm->id . '&chapterid='.$nextid.'">' .
$OUTPUT->pix_icon($navnexticon, $navnexttitle, 'mod_book') . '</a>';
} else {
$chnavigation .= ' <a title="' . $navnext . '" class="booknext" href="view.php?id=' .
$cm->id . '&chapterid='.$nextid.'">' .
$navnext . ':<span class="chaptername"> ' . $nexttitle.
'<span class="arrow"> ' . $OUTPUT->rarrow() . '</span></span></a>';
}
} else {
$navexit = get_string('navexit', 'book');
$sec = $DB->get_field('course_sections', 'section', array('id' => $cm->section));
$returnurl = course_get_url($course, $sec);
if ($book->navstyle == 1) {
$chnavigation .= '<a title="' . $navexit . '" class="bookexit" href="'.$returnurl.'">' .
$OUTPUT->pix_icon('nav_exit', $navexit, 'mod_book') . '</a>';
} else {
$chnavigation .= ' <a title="' . $navexit . '" class="bookexit" href="'.$returnurl.'">' .
'<span class="chaptername">' . $navexit . ' ' . $OUTPUT->uarrow() . '</span></a>';
}
}
}
// We need to discover if this is the last chapter to mark activity as completed.
$islastchapter = false;
if (!$nextid) {
$islastchapter = true;
}
book_view($book, $chapter, $islastchapter, $course, $cm, $context);
// =====================================================
// Book display HTML code
// =====================================================
echo $OUTPUT->header();
echo $OUTPUT->heading(format_string($book->name));
// Info box.
if ($book->intro) {
echo $OUTPUT->box(format_module_intro('book', $book, $cm->id), 'generalbox', 'intro');
}
$navclasses = book_get_nav_classes();
if ($book->navstyle) {
// Upper navigation.
echo '<div class="navtop border-top py-3 clearfix ' . $navclasses[$book->navstyle] . '">' . $chnavigation . '</div>';
}
// The chapter itself.
$hidden = $chapter->hidden ? ' dimmed_text' : null;
echo $OUTPUT->box_start('generalbox book_content' . $hidden);
if (!$book->customtitles) {
if (!$chapter->subchapter) {
$currtitle = book_get_chapter_title($chapter->id, $chapters, $book, $context);
echo $OUTPUT->heading($currtitle, 3);
} else {
$currtitle = book_get_chapter_title($chapters[$chapter->id]->parent, $chapters, $book, $context);
$currsubtitle = book_get_chapter_title($chapter->id, $chapters, $book, $context);
echo $OUTPUT->heading($currtitle, 3);
echo $OUTPUT->heading($currsubtitle, 4);
}
}
$chaptertext = file_rewrite_pluginfile_urls($chapter->content, 'pluginfile.php', $context->id, 'mod_book', 'chapter', $chapter->id);
echo format_text($chaptertext, $chapter->contentformat, array('noclean'=>true, 'overflowdiv'=>true, 'context'=>$context));
echo $OUTPUT->box_end();
if (core_tag_tag::is_enabled('mod_book', 'book_chapters')) {
echo $OUTPUT->tag_list(core_tag_tag::get_item_tags('mod_book', 'book_chapters', $chapter->id), null, 'book-tags');
}
if ($book->navstyle) {
// Lower navigation.
echo '<div class="navbottom py-3 border-bottom clearfix ' . $navclasses[$book->navstyle] . '">' . $chnavigation . '</div>';
}
echo $OUTPUT->footer();