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ps_read_offline.php
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<?php
/*
Plugin Name: Read Offline
Plugin URI: http://soderlind.no/archives/2012/10/01/read-offline/
Description: Download a post or page as pdf, epub, or mobi (see settings).
Version: 0.1.9
Author: Per Soderlind
Author URI: http://soderlind.no
*/
/*
Changelog:
v0.1.9
* Fixed a bug in permalinks that gave 404 for blogs in a subdirectory. Also removed code that gave error when downloading an ePub.
v0.1.8
* Added Google Analytics read-offline event tracking. You can find these under Content » Events in your Google Analytics reports. Assumes you’re using the Asynchronous version of Google Analytics: http://code.google.com/apis/analytics/docs/tracking/asyncTracking.html
v0.1.7
* Fixed a small bug
v0.1.6
* Added the option to add custom css to PDF
v0.1.5
* In Settings->Read Offline, added the option to add custom css to EPub
* Added languages/read-offline.po for easy translation.
v0.1.4
* Added permalink support (/read-offline/"postid"/"post-name"."type"), how-to: http://soderlind.no/archives/2012/11/01/wordpress-plugins-and-permalinks-how-to-use-pretty-links-in-your-plugin/
v0.1.3
* epub will now validate against http://www.epubconversion.com/ePub-validator-iBook.jsp
* Added language variable to the epub file, ISO 639-1 two letter tag based on the WordPress get_locale()
v0.1.2
* Fix typo in download.php, was including "Epub.inc.php", correct is "EPub.inc.php".
v0.1.1
* bugfix
v0.1.0:
* Added the Read Offline shortcode
* Added, in Settings->Read Offline, option to add Read Offline to top and/or bottom of post and page
v0.0.2:
* Filename based on the posts slug
* Added meta data
v0.0.1:
* Initial release
*/
/*
Credits:
This template is based on the template at http://pressography.com/plugins/wordpress-plugin-template/
My changes are documented at http://soderlind.no/archives/2010/03/04/wordpress-plugin-template/
*/
if (!class_exists('ps_read_offline')) {
class ps_read_offline {
var $version = '0.1.9';
/**
* @var string The options string name for this plugin
*/
var $optionsName = 'ps_read_offline_options';
/**
* @var array $options Stores the options for this plugin
*/
var $options = array();
/**
* @var string $localizationDomain Domain used for localization
*/
var $localizationDomain = "read-offline";
/**
* @var string $url The url to this plugin
*/
var $url = '';
/**
* @var string $urlpath The path to this plugin
*/
var $urlpath = '';
//Class Functions
/**
* PHP 4 Compatible Constructor
*/
function ps_read_offline(){$this->__construct();}
/**
* PHP 5 Constructor
*/
function __construct(){
$locale = get_locale();
$mo = plugin_dir_path(__FILE__) . 'languages/' . $this->localizationDomain . '-' . $locale . '.mo';
load_textdomain($this->localizationDomain, $mo);
$this->url = plugins_url(basename(__FILE__), __FILE__);
$this->urlpath = plugins_url('', __FILE__);
//Initialize the options
$this->getOptions();
//admin
add_action("admin_menu", array(&$this,"admin_menu_link"));
add_action('admin_enqueue_scripts', array(&$this,'ps_read_offline_admin_script'));
// user
add_action('the_content', array(&$this,'ps_read_offline_embed'));
add_action('wp_enqueue_scripts', array(&$this,'ps_read_offline_wp_script'));
add_shortcode('readoffline', array(&$this,'ps_read_offline_shortcode'));
// permalink hooks:
add_filter('generate_rewrite_rules', array(&$this,'ps_read_offline_rewrite_rule'));
add_filter('query_vars', array(&$this,'ps_read_offline_query_vars'));
add_action("parse_request", array(&$this,"ps_read_offline_parse_request"));
add_filter('admin_init', array(&$this, 'ps_read_offline_flush_rewrite_rules'));
}
function ps_read_offline_admin_script($hook) {
if ('settings_page_ps_read_offline' != $hook ) return;
wp_enqueue_script('jquery');
wp_enqueue_script('jquery-validate', 'http://ajax.microsoft.com/ajax/jquery.validate/1.6/jquery.validate.min.js', array('jquery'));
wp_enqueue_script('ps_read_offline', $this->urlpath.'/library/js/read-offline-admin.js',array('jquery-validate'),$this->_version());
wp_localize_script( 'ps_read_offline', 'oJs_ps_read_offline', array(
'str_required' => __('Please select a format below', $this->localizationDomain)
));
}
function ps_read_offline_wp_script() {
wp_enqueue_style('ps_read_offline_icons', $this->urlpath.'/e-book-icons/e-book-icons.css',array(),$this->_version());
wp_enqueue_style('ps_read_offline_style', $this->urlpath.'/read-offline.css',array(),$this->_version());
// google analytics track event
if (in_array('yes',$this->options['ps_read_offline_trackevent'])) {
wp_enqueue_script('ps_read_offline', $this->urlpath.'/library/js/read-offline-wp.js',array('jquery'),$this->_version());
}
}
function ps_read_offline_embed($content) {
global $post;
if (!is_object($post)) return;
$placements = array_intersect(array("top_post","bottom_post","top_page","bottom_page"), $this->options['ps_read_offline_option_placement']);
$formats = array_uintersect(
array(
'pdf' => 'PDF'
,'epub' => 'ePub'
,'mobi' => 'mobi'
)
, $this->options['ps_read_offline_option_format']
, "strcasecmp"
);
$readoffline ='<div class="readoffline-embed">';
$text = $this->options['ps_read_offline_option_link_header'];
$text = str_ireplace('%title%', $post->post_title,$text);
if ($text !== '') {
$readoffline .= sprintf('<div class="readoffline-embed-text">%s</div>',stripslashes($text));
}
foreach ($formats as $type => $document_type) {
$str_info = (isset($this->options['ps_read_offline_option_iconsonly']) && in_array('yes',$this->options['ps_read_offline_option_iconsonly'])) ? '' : sprintf("%s %s",__('Download',$this->localizationDomain),$document_type);
$readoffline .= sprintf ('<div><a class="%s" href="%s" title="%s %s.%s">%s</a></div>',
$type,$this->ps_read_offline_url($post->ID,$post->post_name,$type),
__('Download',$this->localizationDomain),$post->post_name,$type,
$str_info
);
}
$readoffline .= "</div>";
if ((is_single() && array_search('top_post',$placements) !== false) || (is_page() && array_search('top_page',$placements) !== false) ) {
$content = $readoffline . $content;
}
if ((is_single() && array_search('bottom_post',$placements) !== false) || (is_page() && array_search('bottom_page',$placements) !== false) ) {
$content = $content . $readoffline;
}
return $content;
}
function ps_read_offline_shortcode($atts) {
if (!is_single() && !is_page()) return;
global $post;
if (!is_object($post)) return;
extract(shortcode_atts(array(
// default values
'format' => 'pdf,epub,mobi'
,'text' => ''
,'icononly' => false
), $atts));
// do param testing
$formats = array_intersect(array("pdf", "epub", "mobi"), explode(',', $format));
$text = str_ireplace('%title%', $post->post_title,$text);
//
$formats = array_uintersect(
array(
'pdf' => 'PDF'
,'epub' => 'ePub'
,'mobi' => 'mobi'
)
, $formats
, "strcasecmp"
);
if (count($formats)>0) {
$ret ='<div class="readoffline-shortcode">';
if ($text !== '') {
$ret .= sprintf('<div class="readoffline-shortcode-text">%s</div>',$text);
}
foreach ($formats as $type => $document_type) {
$str_info = ($icononly) ? '' : sprintf("%s %s",__('Download',$this->localizationDomain),$document_type);
$ret .= sprintf ('<div><a class="%s" href="%s" title="%s %s.%s">%s</a></div>',
$type,$this->ps_read_offline_url($post->ID,$post->post_name,$type),
__('Download ',$this->localizationDomain),$post->post_name,$type,
$str_info
);
}
$ret .= "</div>";
return $ret;
}
return;
}
function _version() {
return $this->version;
}
function ps_read_offline_url($id,$name,$format) {
//$rules = $GLOBALS['wp_rewrite']->wp_rewrite_rules();
if ( get_option('permalink_structure')) {
return sprintf("%s/read-offline/%s/%s.%s",home_url(),$id,$name,$format);
} else {
return sprintf("%s/index.php?read_offline_id=%s&read_offline_name=%s&&read_offline_format=%s",home_url(),$id,$name,$format);
}
}
// rewrite rules
function ps_read_offline_rewrite_rule( $wp_rewrite ) {
$new_rules = array(
'read-offline/([^/]+)/([^\.]+).(pdf|epub|mobi)$' => sprintf("index.php?read_offline_id=%s&read_offline_name=%s&&read_offline_format=%s",$wp_rewrite->preg_index(1),$wp_rewrite->preg_index(2),$wp_rewrite->preg_index(3))
);
$wp_rewrite->rules = $new_rules + $wp_rewrite->rules;
return $wp_rewrite->rules;
}
function ps_read_offline_query_vars( $query_vars ) {
$query_vars[] = 'read_offline_id';
$query_vars[] = 'read_offline_name';
$query_vars[] = 'read_offline_format';
return $query_vars;
}
function ps_read_offline_parse_request($wp_query) {
global $post;
if (isset($wp_query->query_vars['read_offline_id'])) {
$id = $wp_query->query_vars['read_offline_id'];
$post = get_page($id);
if (is_object($post) && $post->post_status == 'publish') {
$docformat = strtolower($wp_query->query_vars['read_offline_format']);
$author_firstlast = sprintf("%s %s",get_the_author_meta('user_firstname',$post->post_author),get_the_author_meta('user_lastname',$post->post_author));
$author_lastfirst = sprintf("%s, %s",get_the_author_meta('user_firstname',$post->post_author),get_the_author_meta('user_lastname',$post->post_author));
$html = '<h1 class="entry-title">' . get_the_title($post->ID) . '</h1>';
$content = $post->post_content;
$content = preg_replace("/\[\\/?readoffline(\\s+.*?\]|\])/i", "", $content); // remove all [readonline] shortcodes
$html .= apply_filters('the_content', $content);
$cssData = (isset($this->options['ps_read_offline_epub_css'])) ? $this->options['ps_read_offline_epub_css'] : "";
switch ($docformat) {
case 'epub':
require_once "library/epub/EPub.inc.php";
$epub = new EPub();
$epub->setGenerator('Read Offline '. $this->version . 'by Per Soderlind, http://wordpress.org/extend/plugins/read-offline/');
$epub->setTitle($post->post_title); //setting specific options to the EPub library
$epub->setIdentifier($post->guid, EPub::IDENTIFIER_URI);
$iso6391 = ( '' == get_locale() ) ? 'en' : strtolower( substr(get_locale(), 0, 2) ); // only ISO 639-1
$epub->setLanguage($iso6391);
$epub->setAuthor($author_firstlast, $author_lastfirst); // "Firstname, Lastname", "Lastname, First names"
$epub->setPublisher(get_bloginfo( 'name' ), get_bloginfo( 'url' ));
$epub->setSourceURL($post->guid);
$epub->setRights('bla bla bla');
$epub->addCSSFile("styles.css", "css1", $cssData);
$content_start =
"<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"
. "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.1//EN\"\n"
. " \"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd\">\n"
. "<html xmlns=\"http://www.w3.org/1999/xhtml\">\n"
. "<head>"
. "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" />\n"
. "<link rel=\"stylesheet\" type=\"text/css\" href=\"styles.css\" />\n"
. "<title>" . $post->post_title . "</title>\n"
. "</head>\n"
. "<body>\n";
$content_end = "\n</body>\n</html>\n";
//$epub->setCoverImage("wp-content/themes/twentyten/images/headers/path.jpg");
$epub->addChapter("Body", "Body.html", $content_start . $html . $content_end);
$epub->finalize();
$zipData = $epub->sendBook($post->post_name);
break;
case 'mobi':
require_once "library/mobi/Mobi.inc.php";
$mobi = new MOBI();
$options = array(
"title"=> $post->post_title,
"author"=> $author,
"subject"=> (count(wp_get_post_categories($id))) ? implode(' ,',array_map("get_cat_name", wp_get_post_categories($id))) : "Unknown subject"
);
$mobi->setOptions($options);
$mobi->setData($html);
$zipData = $mobi->download($post->post_name . ".mobi");
break;
case 'pdf':
require_once "library/mpdf/mpdf.inc.php";
$pdf = new mPDF();
$pdf->SetTitle($post->post_title);
$pdf->SetAuthor($author);
if ($cssData != "") {
$pdf->WriteHTML($cssData,1); // The parameter 1 tells that this is css/style only and no body/html/text
}
$pdf->WriteHTML($html);
$pdf->Output($post->post_name . ".pdf", 'D');
break;
}
exit();
}
}
}
function ps_read_offline_flush_rewrite_rules() {
if ( ! isset( $rules['read-offline/([^/]+)/([^\.]+).(pdf|epub|mobi)$'] ) ) {
global $wp_rewrite;
$wp_rewrite->flush_rules();
}
}
/**
* @desc Retrieves the plugin options from the database.
* @return array
*/
function getOptions() {
if (isset($_GET['ps_read_offline_reset']) || !$theOptions = get_option($this->optionsName)) {
$theOptions = array(
'ps_read_offline_option_format'=> array('pdf','epub','mobi'),
'ps_read_offline_option_zip' => array('no'),
'ps_read_offline_option_placement'=>array('widget'),
'ps_read_offline_option_iconsonly'=>array('no'),
'ps_read_offline_option_link_header'=>'Read Offline:',
'ps_read_offline_trackevent' => array('no'),
'ps_read_offline_epub_css' => ''
);
update_option($this->optionsName, $theOptions);
}
$this->options = $theOptions;
}
/**
* Saves the admin options to the database.
*/
function saveAdminOptions(){
update_option($this->optionsName, $this->options);
}
/**
* @desc Adds the options subpanel
*/
function admin_menu_link() {
add_options_page('Read Offline', 'Read Offline', 'manage_options', basename(__FILE__), array(&$this,'admin_options_page'));
add_filter( 'plugin_action_links_' . plugin_basename(__FILE__), array(&$this, 'filter_plugin_actions'), 10, 2 );
}
/**
* @desc Adds the Settings link to the plugin activate/deactivate page
*/
function filter_plugin_actions($links, $file) {
$settings_link = '<a href="options-general.php?page=' . basename(__FILE__) . '">' . __('Settings') . '</a>';
array_unshift( $links, $settings_link ); // before other links
return $links;
}
/**
* Adds settings/options page
*/
function admin_options_page() {
if(isset($_POST['ps_read_offline_save'])){
if (! wp_verify_nonce($_POST['_wpnonce'], 'ps_read_offline-update-options') ) {
die('Whoops! There was a problem with the data you posted. Please go back and try again.');
}
$this->options['ps_read_offline_option_format'] = $_POST['ps_read_offline_option_format'];
$this->options['ps_read_offline_option_zip'] = isset($_POST['ps_read_offline_option_zip']) ? $_POST['ps_read_offline_option_zip'] : array('no');
$this->options['ps_read_offline_option_placement'] = isset($_POST['ps_read_offline_option_placement']) ? $_POST['ps_read_offline_option_placement'] : array('widget');
$this->options['ps_read_offline_option_iconsonly'] = isset($_POST['ps_read_offline_option_iconsonly']) ? $_POST['ps_read_offline_option_iconsonly'] : array('no');
$this->options['ps_read_offline_trackevent'] = isset($_POST['ps_read_offline_trackevent']) ? $_POST['ps_read_offline_trackevent'] : array('no');
$this->options['ps_read_offline_option_link_header'] = esc_attr($_POST['ps_read_offline_option_link_header']);
$this->options['ps_read_offline_epub_css'] = $_POST['ps_read_offline_epub_css'];
$this->saveAdminOptions();
_e('<div class="updated"><p>Success! Your changes were sucessfully saved!</p></div>',$this->localizationDomain);
} ?>
<div class="wrap">
<h2>Read Offline</h2>
<div style="float:left; width:80%;">
<form method="post" id="ps_read_offline_options">
<?php wp_nonce_field('ps_read_offline-update-options'); ?>
<table width="100%" cellspacing="2" cellpadding="5" class="form-table" >
<tr valign="top">
<th width="33%" scope="row">
<?php _e('Formats available for your visitors', $this->localizationDomain); ?>
<div class="error" style="display:none;"></div>
</th>
<td>
<input name="ps_read_offline_option_format[]" id="ps_read_offline_option_format_pdf" type="checkbox" value="pdf" <?php if (in_array('pdf',$this->options['ps_read_offline_option_format'])) echo ' checked="checked" ';?>/> <label for="ps_read_offline_option_format_pdf"><?php _e('PDF', $this->localizationDomain);?></label><br />
<input name="ps_read_offline_option_format[]" id="ps_read_offline_option_format_epub" type="checkbox" value="epub" <?php if (in_array('epub',$this->options['ps_read_offline_option_format'])) echo ' checked="checked" ';?>/> <label for="ps_read_offline_option_format_epub"><?php _e('ePub', $this->localizationDomain);?></label><br />
<input name="ps_read_offline_option_format[]" id="ps_read_offline_option_format_mobi" type="checkbox" value="mobi" <?php if (in_array('mobi',$this->options['ps_read_offline_option_format'])) echo ' checked="checked" ';?>/> <label for="ps_read_offline_option_format_mobi"><?php _e('mobi', $this->localizationDomain);?></label><br />
<br /><span class="setting-description"><?php _e("
If direct linking to ePub and mobi doesn't work, add the following to your .htaccess file:
<p>
<div style='font-family:\"Courier New\", Courier, monospace;'>
AddType application/epub+zip .epub<br/>
AddType application/x-mobipocket-ebook .mobi
</div>
</p>
", $this->localizationDomain); ?></span>
</td>
</tr>
<tr valign="top">
<th width="33%" scope="row"><?php _e('Download link placements', $this->localizationDomain); ?></th>
<td>
<input name="ps_read_offline_option_placement[]" id="ps_read_offline_option_placement_top_post" type="checkbox" value="top_post" <?php if (in_array('top_post',$this->options['ps_read_offline_option_placement'])) echo ' checked="checked" ';?>/> <label for="ps_read_offline_option_placement_top_post"><?php _e('At the top of the post', $this->localizationDomain);?></label><br />
<input name="ps_read_offline_option_placement[]" id="ps_read_offline_option_placement_bottom_post" type="checkbox" value="bottom_post" <?php if (in_array('bottom_post',$this->options['ps_read_offline_option_placement'])) echo ' checked="checked" ';?>/> <label for="ps_read_offline_option_placement_bottom_post"><?php _e('On the botom of the post', $this->localizationDomain);?></label><br />
<input name="ps_read_offline_option_placement[]" id="ps_read_offline_option_placement_top_page" type="checkbox" value="top_page" <?php if (in_array('top_page',$this->options['ps_read_offline_option_placement'])) echo ' checked="checked" ';?>/> <label for="ps_read_offline_option_placement_top_page"><?php _e('At the top of the page', $this->localizationDomain);?></label><br />
<input name="ps_read_offline_option_placement[]" id="ps_read_offline_option_placement_bottom_page" type="checkbox" value="bottom_page" <?php if (in_array('bottom_page',$this->options['ps_read_offline_option_placement'])) echo ' checked="checked" ';?>/> <label for="ps_read_offline_option_placement_bottom_page"><?php _e('On the botom of the page', $this->localizationDomain);?></label><br />
<span class="setting-description"><?php _e("Also available via the the <a href='widgets.php'>Read Offline widget</a> and the <a href='http://soderlind.no/archives/2012/10/01/read-offline/#shortcode'>[readoffline] shortcode</a>.", $this->localizationDomain); ?></span>
</td>
</tr>
<tr valign="top">
<th width="33%" scope="row"><?php _e('Download link header:', $this->localizationDomain); ?></th>
<td>
<input class="regular-text" name="ps_read_offline_option_link_header" id="ps_read_offline_option_link_header" type="text" value="<?php printf("%s", stripslashes($this->options['ps_read_offline_option_link_header'])); ?>" />
<br /><span class="setting-description"><?php _e("Use %title% to insert the post and page title", $this->localizationDomain); ?></span>
</td>
</tr>
<tr valign="top">
<th width="33%" scope="row"><?php _e('Download link, icons only?:', $this->localizationDomain); ?></th>
<td>
<input name="ps_read_offline_option_iconsonly[]" id="ps_read_offline_option_iconsonly_yes" type="radio" value="yes" <?php if (in_array('yes',$this->options['ps_read_offline_option_iconsonly'])) echo ' checked="checked" ';?>/> <label for="ps_read_offline_option_iconsonly_yes"><?php _e('Yes', $this->localizationDomain);?></label><br />
<input name="ps_read_offline_option_iconsonly[]" id="ps_read_offline_option_iconsonly_no" type="radio" value="no" <?php if (in_array('no',$this->options['ps_read_offline_option_iconsonly'])) echo ' checked="checked" ';?>/> <label for="ps_read_offline_option_iconsonly_no"><?php _e('No', $this->localizationDomain);?></label><br />
<br /><span class="setting-description"><?php _e("", $this->localizationDomain); ?></span>
</td>
<tr valign="top">
<th width="33%" scope="row"><?php _e('Google Analytics, track downloads:', $this->localizationDomain); ?></th>
<td>
<input name="ps_read_offline_trackevent[]" id="ps_read_offline_trackevent_yes" type="radio" value="yes" <?php if (in_array('yes',$this->options['ps_read_offline_trackevent'])) echo ' checked="checked" ';?>/> <label for="ps_read_offline_trackevent_yes"><?php _e('Yes', $this->localizationDomain);?></label><br />
<input name="ps_read_offline_trackevent[]" id="ps_read_offline_trackevent_no" type="radio" value="no" <?php if (in_array('no',$this->options['ps_read_offline_trackevent'])) echo ' checked="checked" ';?>/> <label for="ps_read_offline_trackevent_no"><?php _e('No', $this->localizationDomain);?></label><br />
<br /><span class="setting-description"><?php _e("Track read-offline events, you can find these under Content » Events in your Google Analytics reports. Assumes you’re using the <a href=\"http://code.google.com/apis/analytics/docs/tracking/asyncTracking.html\">Asynchronous version of Google Analytics</a>", $this->localizationDomain); ?></span>
</td>
</tr>
</tr>
<tr valign="top">
<th width="33%" scope="row"><?php _e('ePub/PDF Style Sheet:', $this->localizationDomain); ?></th>
<td>
<textarea style="width:95%;height:200px;" cols="50" wrap="hard" name="ps_read_offline_epub_css" id="ps_read_offline_epub_css"><?php echo $this->options['ps_read_offline_epub_css'];?></textarea>
<br /><span class="setting-description"><?php _e("Add custom css to the ePub document", $this->localizationDomain); ?></span>
</td>
</tr>
</table>
<p class="submit">
<input type="submit" name="ps_read_offline_save" class="button-primary" value="<?php _e('Save Changes', $this->localizationDomain); ?>" /> <a href="options-general.php?page=<?php echo basename(__FILE__);?>&ps_read_offline_reset" class="submit"><?php _e('Reset', $this->localizationDomain);?></a>
</p>
</form>
</div>
<div style="float:left;width:20%;">
<div style="float:right;text-align:center;width:200px;padding:5px; border: 2px solid #ccc; background-color: #fff;">
<p>
I'm coding after midnight. You can buy me some coffees to keep me awake :) Thank you!
</p>
<p>
<form action="https://www.paypal.com/cgi-bin/webscr" method="post"><div class="paypal-donations"><input type="hidden" name="cmd" value="_donations"><input type="hidden" name="business" value="HYB5R27TC6W8J"><input type="hidden" name="page_style" value="Donate"><input type="hidden" name="return" value="http://soderlind.no/donate/"><input type="hidden" name="currency_code" value="USD"><input type="image" src="https://www.paypal.com/en_US/i/btn/btn_donate_SM.gif" name="submit" alt="PayPal - The safer, easier way to pay online."><img alt="" src="https://www.paypal.com/en_US/i/scr/pixel.gif" width="1" height="1"></div></form>
</p>
</div>
</div>
<?php
}
} //End Class
} //End if class exists statement
if (!class_exists('ps_read_offline_widget')) {
class ps_read_offline_widget extends WP_Widget {
var $localizationDomain = "ps_read_offline";
function __construct() {
parent::__construct(
'read_offline_widget', // Base ID
'Read Offline', // Name
array( 'description' => __( 'Adds a download link for the current post and page. PDF, EPUB and MOBI is supported. Configurable in Settings->Read Offline', $this->localizationDomain ), ) // Args
);
}
function widget($args, $instance) {
global $post;
if (!is_single() && !is_page()) return;
extract($args, EXTR_SKIP);
echo $before_widget;
$title = empty($instance['title']) ? ' ' : apply_filters('widget_title', $instance['title']);
$text = empty($instance['text']) ? ' ' : apply_filters('widget_text', $instance['text']);
$icononly = ($instance['icononly'] == 'yes');
$text = str_ireplace('%title%', $post->post_title,$text);
if ( !empty( $title ) ) {
echo $before_title . $title . $after_title;
}
echo '<div class="readoffline-widget">';
$options = get_option('ps_read_offline_options');
$formats = array_uintersect(
array(
'pdf' => 'PDF'
,'epub' => 'ePub'
,'mobi' => 'mobi'
)
, $options['ps_read_offline_option_format']
, "strcasecmp"
);
echo $text, '<br/>';
if ($icononly === true) {
foreach ($formats as $type => $document_type) {
printf ('<div><a class="%s" href="%s" title="%s %s.%s"></a></div>',
$type,$this->ps_read_offline_url($post->ID,$post->post_name,$type),
__('Download ',$this->localizationDomain),$post->post_name,$type
);
}
} else {
echo "<ul>";
foreach ($formats as $type => $document_type) {
printf ('<li><a class="%s" href="%s" title="%s %s.%s">%s%s</a></li>',
$type,$this->ps_read_offline_url($post->ID,$post->post_name,$type),
__('Download ',$this->localizationDomain),$post->post_name,$type,
__('Download ',$this->localizationDomain),$document_type
);
}
echo "</ul>";
}
echo '</div>';
echo $after_widget;
}
function ps_read_offline_url($id,$name,$format) {
$rules = $GLOBALS['wp_rewrite']->wp_rewrite_rules();
if ( isset($rules)) {
return sprintf("%s/read-offline/%s/%s.%s",home_url(),$id,$name,$format);
} else {
return sprintf("%s/index.php?read_offline_id=%s&read_offline_name=%s&&read_offline_format=%s",home_url(),$id,$name,$format);
}
}
function ps_read_offline_ga_tacking($dotracking,$type,$name) {
if (in_array('yes',$dotracking)) {
return sprintf("onclick=\"if (typeof _gaq !== 'undefined' && _gaq !== null) {_gaq.push(['_trackEvent', 'read-offline','%s','%s']);}return true;\"",$type,$name);
} else {
return "";
}
}
function update($new_instance, $old_instance) {
$instance = $old_instance;
$instance['title'] = strip_tags($new_instance['title']);
$instance['text'] = strip_tags($new_instance['text']);
$instance['icononly'] = $new_instance['icononly'];
return $instance;
}
function form($instance) {
$instance = wp_parse_args( (array) $instance, array( 'title' => '', 'text' => '', 'icononly' => 'no' ));
$title = strip_tags($instance['title']);
$text = strip_tags($instance['text']);
$icononly = $instance['icononly'];
printf('<p><label for="%s">%s <input class="widefat" id="%s" name="%s" type="text" value="%s" /></label></p>',$this->get_field_id('title'),__('Title:',$this->localizationDomain),$this->get_field_id('title'),$this->get_field_name('title'),attribute_escape($title));
printf('<p><label for="%s">%s <textarea class="widefat" id="%s" name="%s" >%s</textarea></label></p>',$this->get_field_id('text'),__('Text:',$this->localizationDomain),$this->get_field_id('text'),$this->get_field_name('text'),attribute_escape($text));
printf('
<p>Icons only?:
<input class="radio" type="radio" %s id="%s_yes" name="%s" value="yes"/> <label for="%s_yes">%s</label>
<input class="radio" type="radio" %s id="%s_no" name="%s" value="no"/> <label for="%s_no">%s</label>
</p>',
checked( $instance['icononly'], 'yes', false),$this->get_field_id( 'icononly' ),$this->get_field_name( 'icononly' ),$this->get_field_id( 'icononly' ),__('Yes'),
checked( $instance['icononly'], 'no', false), $this->get_field_id( 'icononly' ),$this->get_field_name( 'icononly' ),$this->get_field_id( 'icononly' ),__('No')
);
}
} // end class
add_action( 'widgets_init', create_function( '', 'register_widget( "ps_read_offline_widget" );' ) );
}
if (class_exists('ps_read_offline')) {
$ps_read_offline_var = new ps_read_offline();
}
?>