'tx_width', 'desc' => 'Viewer will use this width if not specified in the shortcode. Accept px or %.' )
);
add_settings_field(
'tx_height',
'Default Height',
array( $this, 'text_callback' ),
'pdfviewer_configure_page',
'pdfviewer_configure_section',
array( 'field' => 'tx_height', 'desc' => 'Viewer will use this height if not specified in the shortcode. Accept px or %.' )
);
add_settings_field(
'olderIE', // ID
'Disable IE support', // Title
array( $this, 'number_callback' ), // Callback
'pdfviewer_configure_page', // Page
'pdfviewer_configure_section', // Section
array( 'field' => 'olderIE', 'desc' => 'Internet Explorer may work awkwardly with PDFjs. To avoid user disappointment, disable support for IE version lower than this number. Accept integer only.' )
);
add_settings_field(
'ta_notice', // ID
'Disabled Notice', // Title
array( $this, 'textarea_callback' ), // Callback
'pdfviewer_configure_page', // Page
'pdfviewer_configure_section', // Section
array( 'field' => 'ta_notice', 'desc' => 'Message to display for those using IE version lower than number specified above. Use %%PDF_URL%% to replace with document URL for downloading. HTML allowed.' )
);
}
/**
* Sanitize each setting field as needed
*
* @param array $input Contains all settings fields as array keys
*/
public function sanitize( $input )
{
$new_input = array();
$input_error = false;
foreach ($input as $field => $value) {
//only save new settings if not empty
if ( empty($value) ) {
$input_error = true;
$new_input[$field] = $this->options[$field];
} else {
$exp = explode('_',$field);
if ($exp[0] == 'ta') {
$new_input[$field] = esc_textarea($value);
} elseif ($exp[0] == 'tx') {
$new_input[$field] = sanitize_text_field($value);
} else {
$new_input[$field] = absint($value);
}
}
}
if ($input_error) {
add_settings_error(
'pdfviewer_options',
esc_attr( 'settings_updated' ),
__('Any settings cannot be empty. Blank fields are reverted to previous values.','pdfviewer'),
'error'
);
}
return $new_input;
}
/**
* Print the Section text
*/
public function print_settings_section()
{
$width = $this->options['tx_width'];
$height = $this->options['tx_height'];
echo '
Use [pdfviewer width="'.$width.'" height="'.$height.'"]http://full-url/document.pdf[/pdfviewer] in post editor to embed the PDF Viewer.
';
}
/**
* Get the settings option array and print one of its values
*/
public function checkbox_callback($args)
{
$field = $args['field'];
$label = $args['label'];
$checked = !empty($this->options[$field]) ? checked( 1, $this->options[$field], false ) : '';
printf( '', $field, $checked );
printf( '', $field, $label );
}
public function number_callback($args)
{
$field = $args['field'];
$desc = $args['desc'];
printf(
' %3$s',
$field, isset( $this->options[$field] ) ? esc_attr($this->options[$field]) : '', $desc
);
}
public function text_callback($args)
{
$field = $args['field'];
$desc = $args['desc'];
printf(
' %3$s',
$field, isset( $this->options[$field] ) ? esc_attr($this->options[$field]) : '', $desc
);
}
public function textarea_callback($args)
{
$field = $args['field'];
$desc = $args['desc'];
printf(
' %3$s',
$field, isset( $this->options[$field] ) ? esc_attr($this->options[$field]) : '', $desc
);
}
/**
* Add PDF Viewer Shortcode Button to Post Editor
*/
public function add_quicktags() {
if ( wp_script_is('quicktags') ){
$width = $this->options['tx_width'];
$height = $this->options['tx_height'];
?>
version_compare( intval( $response['version'] ) , $version ) )
return true;
}
/*
* Add [pdfviewer] shortcode
*/
public function add_shortcode( $atts, $content = "" ) {
$content = esc_url($content);
if ( !empty($content) && filter_var($content, FILTER_VALIDATE_URL) ) {
//TODO: filter URL to check if PDF only
if ( $this->older_ie($this->options['olderIE']) ) {
$notice = str_replace('%%PDF_URL%%', $content, $this->options['ta_notice']);
echo html_entity_decode($notice);
} else {
$atts = shortcode_atts(
array(
'width' => $this->options['tx_width'],
'height' => $this->options['tx_height']
),
$atts,
'pdfviewer'
);
$pdfjs_url = plugin_dir_url( __FILE__ ).'stable/web/viewer.html?file='.$content;
$pdfjs_iframe = ' ';
return $pdfjs_iframe;
}
} else {
return 'Invalid URL for PDF Viewer';
}
}
}
?>