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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(dirname(__FILE__).'/../../config.php');
require_once(dirname(__FILE__).'/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.
foreach ($chapters as $ch) {
if ($edit) {
$chapterid = $ch->id;
break;
}
if (!$ch->hidden) {
$chapterid = $ch->id;
break;
}
}
}
if (!$chapterid or !$chapter = $DB->get_record('book_chapters', array('id'=>$chapterid, 'bookid'=>$book->id))) {
print_error('errorchapter', 'mod_book', new moodle_url('/course/view.php', array('id'=>$course->id)));
}
// chapter is hidden for students
if ($chapter->hidden and !$viewhidden) {
print_error('errorchapter', 'mod_book', new moodle_url('/course/view.php', array('id'=>$course->id)));
}
$PAGE->set_url('/mod/book/view.php', array('id'=>$id, 'chapterid'=>$chapterid));
// Unset all page parameters.
unset($id);
unset($bid);
unset($chapterid);
// Security checks END.
add_to_log($course->id, 'book', 'view', 'view.php?id='.$cm->id.'&amp;chapterid='.$chapter->id, $book->id, $cm->id);
// 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;
$nextid = null;
$last = null;
foreach ($chapters as $ch) {
if (!$edit and $ch->hidden) {
continue;
}
if ($last == $chapter->id) {
$nextid = $ch->id;
break;
}
if ($ch->id != $chapter->id) {
$previd = $ch->id;
}
$last = $ch->id;
}
$chnavigation = '';
if ($previd) {
$chnavigation .= '<a title="'.get_string('navprev', 'book').'" href="view.php?id='.$cm->id.
'&amp;chapterid='.$previd.'"><img src="'.$OUTPUT->pix_url('nav_prev', 'mod_book').'" class="bigicon" alt="'.get_string('navprev', 'book').'"/></a>';
} else {
$chnavigation .= '<img src="'.$OUTPUT->pix_url('nav_prev_dis', 'mod_book').'" class="bigicon" alt="" />';
}
if ($nextid) {
$chnavigation .= '<a title="'.get_string('navnext', 'book').'" href="view.php?id='.$cm->id.
'&amp;chapterid='.$nextid.'"><img src="'.$OUTPUT->pix_url('nav_next', 'mod_book').'" class="bigicon" alt="'.get_string('navnext', 'book').'" /></a>';
} else {
$sec = '';
if ($section = $DB->get_record('course_sections', array('id'=>$cm->section))) {
$sec = $section->section;
}
if ($course->id == $SITE->id) {
$returnurl = "$CFG->wwwroot/";
} else {
$returnurl = "$CFG->wwwroot/course/view.php?id=$course->id#section-$sec";
}
$chnavigation .= '<a title="'.get_string('navexit', 'book').'" href="'.$returnurl.'"><img src="'.$OUTPUT->pix_url('nav_exit', 'mod_book').
'" class="bigicon" alt="'.get_string('navexit', 'book').'" /></a>';
// we are cheating a bit here, viewing the last page means user has viewed the whole book
$completion = new completion_info($course);
$completion->set_module_viewed($cm);
}
// =====================================================
// Book display HTML code
// =====================================================
echo $OUTPUT->header();
// upper nav
echo '<div class="navtop">'.$chnavigation.'</div>';
// chapter itself
echo $OUTPUT->box_start('generalbox book_content');
if (!$book->customtitles) {
$hidden = $chapter->hidden ? 'dimmed_text' : '';
if (!$chapter->subchapter) {
$currtitle = book_get_chapter_title($chapter->id, $chapters, $book, $context);
echo '<p class="book_chapter_title '.$hidden.'">'.$currtitle.'</p>';
} else {
$currtitle = book_get_chapter_title($chapters[$chapter->id]->parent, $chapters, $book, $context);
$currsubtitle = book_get_chapter_title($chapter->id, $chapters, $book, $context);
echo '<p class="book_chapter_title '.$hidden.'">'.$currtitle.'<br />'.$currsubtitle.'</p>';
}
}
$chaptertext = file_rewrite_pluginfile_urls($chapter->content, 'pluginfile.php', $context->id, 'mod_book', 'chapter', $chapter->id);
echo format_text($chaptertext, $chapter->contentformat, array('noclean'=>true, 'context'=>$context));
echo $OUTPUT->box_end();
// lower navigation
echo '<div class="navbottom">'.$chnavigation.'</div>';
echo $OUTPUT->footer();
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