/**
* WP_Ajax hook for pb_delete_catalog_logo
*/
static function deleteLogo()
{
check_ajax_referer('pb-delete-catalog-logo');
$image_url = $_POST['filename'];
$user_id = (int) $_POST['pid'];
$book = get_active_blog_for_user($user_id);
if (current_user_can_for_blog($book->blog_id, 'upload_files')) {
switch_to_blog($book->blog_id);
// Delete old images
$old_id = \PressBooks\Image\attachment_id_from_url($image_url);
if ($old_id) {
wp_delete_attachment($old_id, true);
}
update_user_meta($user_id, 'pb_catalog_logo', \PressBooks\Image\default_cover_url());
restore_current_blog();
}
// @see http://codex.wordpress.org/AJAX_in_Plugins#Error_Return_Values
// Will append 0 to returned json string if we don't die()
die;
}
/**
* Returns book information in a useful, string only, format. Data is converted to HTML.
*
* @return array
*/
static function getBookInformation($id = '')
{
// -----------------------------------------------------------------------------
// Is cached?
// -----------------------------------------------------------------------------
if (!empty($id) && is_int($id)) {
$blog_id = $id;
switch_to_blog($blog_id);
} else {
global $blog_id;
}
$cache_id = "book-inf-{$blog_id}";
$book_information = wp_cache_get($cache_id, 'pb');
if ($book_information) {
return $book_information;
}
// ----------------------------------------------------------------------------
// Book Information
// ----------------------------------------------------------------------------
$expected_array = array('pb_keywords_tags', 'pb_bisac_subject', 'pb_contributing_authors');
$expected_the_content = array('pb_custom_copyright', 'pb_about_unlimited');
$book_information = array();
$meta = new Metadata();
$data = $meta->getMetaPostMetadata();
foreach ($data as $key => $val) {
// Skip anything not prefixed with pb_
if (!preg_match('/^pb_/', $key)) {
continue;
}
// We only care about strings
if (is_array($val)) {
if (false !== in_array($key, $expected_array)) {
$val = implode(', ', $val);
} else {
$val = array_values($val);
$val = array_pop($val);
}
}
// Skip empty values
if (!trim($val)) {
continue;
}
if (false !== in_array($key, $expected_the_content)) {
$val = wptexturize($val);
$val = wpautop($val);
} else {
$val = htmlspecialchars($val, ENT_NOQUOTES | ENT_XHTML, 'UTF-8', false);
}
// Remove invisible control characters that break XML
$val = \PressBooks\Sanitize\remove_control_characters($val);
$book_information[$key] = $val;
}
// Return our best guess if no book information has been entered.
if (empty($book_information)) {
$book_information['pb_title'] = get_bloginfo('name');
if (!function_exists('get_user_by')) {
include ABSPATH . 'wp-includes/pluggable.php';
}
$author = get_user_by('email', get_bloginfo('admin_email'));
$book_information['pb_author'] = $author->display_name;
$book_information['pb_cover_image'] = \PressBooks\Image\default_cover_url();
}
// -----------------------------------------------------------------------------
// Cache & Return
// -----------------------------------------------------------------------------
wp_cache_set($cache_id, $book_information, 'pb', 86400);
if (!empty($id) && is_int($id)) {
restore_current_blog();
}
return $book_information;
}
/**
* Render cover image widget
*
* @param $form_id
* @param $cover_pid
* @param $image_url
* @param $ajax_action
* @param $nonce
* @param string $description (optional)
*/
function render_cover_image_box($form_id, $cover_pid, $image_url, $ajax_action, $nonce, $description = '')
{
?>
<div class="custom-metadata-field image">
<script type="text/javascript">
// <![CDATA[
jQuery.noConflict();
jQuery(document).ready(function($){
jQuery('#delete_cover_button').click(function(e) {
if (!confirm('<?php
esc_attr_e('Are you sure you want to delete this?', 'pressbooks');
?>
')) {
e.preventDefault();
return false;
}
var image_file = jQuery(this).attr('name');
var pid = jQuery('#cover_pid').attr('value');
jQuery.ajax({
url: ajaxurl,
type: 'POST',
data: {
action: '<?php
echo $ajax_action;
?>
',
filename: image_file,
pid: pid,
_ajax_nonce: '<?php
echo $nonce;
?>
'
},
success: function(data) {
jQuery('#delete_cover_button').remove();
jQuery("#cover_image_preview").fadeOut("slow", function () {
jQuery("#cover_image_preview").load(function () { //avoiding blinking, wait until loaded
jQuery("#cover_image_preview").fadeIn();
});
jQuery('#cover_image_preview').attr('src', '<?php
echo \PressBooks\Image\default_cover_url();
?>
');
});
}
});
});
});
// ]]>
</script>
<div class="<?php
echo $form_id;
?>
" id="<?php
echo $form_id;
?>
-1">
<?php
if ($image_url && !\PressBooks\Image\is_default_cover($image_url)) {
?>
<p><img id="cover_image_preview" src="<?php
echo $image_url;
?>
" style="width:auto;height:100px;" alt="cover_image" /><br />
<button id="delete_cover_button" name="<?php
echo $image_url;
?>
" type="button" class="button-secondary" ><?php
_e('Delete', 'pressbooks');
?>
</button></p>
<p><input type="file" name="<?php
echo $form_id;
?>
" value="" id="<?php
echo $form_id;
?>
" /></p>
<input type="hidden" id="cover_pid" name="cover_pid" value="<?php
echo $cover_pid;
?>
" />
<?php
} else {
?>
<p><img id="cover_image_preview" src="<?php
echo \PressBooks\Image\default_cover_url();
?>
" style="width:auto;height:100px;" alt="cover_image" /></p>
<p><input type="file" name="<?php
echo $form_id;
?>
" value="<?php
echo $image_url;
?>
" id="<?php
echo $form_id;
?>
" /></p>
<?php
}
?>
<?php
if ($description) {
?>
<span class="description"><?php
echo $description;
?>
</span><?php
}
?>
</div>
</div>
<?php
}
/**
* WP_Ajax hook for pb_delete_cover_image
*/
function delete_cover_image()
{
if (current_user_can_for_blog(get_current_blog_id(), 'upload_files') && check_ajax_referer('pb-delete-cover-image')) {
$image_url = $_POST['filename'];
$pid = $_POST['pid'];
// Delete old images
$old_id = \PressBooks\Image\attachment_id_from_url($image_url);
if ($old_id) {
wp_delete_attachment($old_id, true);
}
update_post_meta($pid, 'pb_cover_image', \PressBooks\Image\default_cover_url());
\PressBooks\Book::deleteBookObjectCache();
}
// @see http://codex.wordpress.org/AJAX_in_Plugins#Error_Return_Values
// Will append 0 to returned json string if we don't die()
die;
}
/**
* Change default book cover from PNG to JPG
*/
function changeDefaultBookCover()
{
$post = $this->getMetaPost();
if ($post) {
$pb_cover_image = get_post_meta($post->ID, 'pb_cover_image', true);
if (preg_match('~assets/images/default-book-cover\\.png$~', $pb_cover_image)) {
update_post_meta($post->ID, 'pb_cover_image', \PressBooks\Image\default_cover_url());
Book::deleteBookObjectCache();
}
}
}
