Possibility display download link for download PDF file after submitting the form

Hi all,
As and other people whou use this cool module I think possibility display download link for download PDF file after submitting the form will be great faeture!

So after several hours of thinking I made small hack ;-)
I attach my version to this post

Unfortunately I not use GIt so cannot attach diff file.
I try write my hack code below.

This code add possibility to display the download link only if in "Form settings" for redirect selected as "Confirmation page".

So start from webform2pdf.install
I have no idea how to make upgrade for database, so after all manipulation will be need full reinstall.

##
# in function webform2pdf_install() in line 22 I add
##
'pdf_download_show'=> 0, 'pdf_download_title' => 'Download PDF',

##
# in function webform2pdf_schema() in line about 240 added
##
'pdf_download_show'=>array(
        'description' => 'Whether display the download link.',
        'type' => 'int',
        'size' => 'tiny',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
), 
      
'pdf_download_title' => array(
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => 'Download PDF',
        'description' => 'Title for download link.',
),

 

Code for webform2pdf.settings.inc file

##
# in function webform2pdf_admin_settings($form, &$form_state) in line about 27 added
##

// download settings
$form['base']['pdf_download_show'] = array(
        '#type' => 'checkbox',
        '#title' => t('Display download link.'),
        '#description' => t('Display download link for download PDF file after form submit. Possible only if in "Form settings" selected "Confirmation page" for redirect'),
        '#default_value' => $default['pdf_download_show'],
);
$form['base']['pdf_download_title'] = array(
     '#type' => 'textfield',
     '#title' => t('Title for download link.'),
     '#default_value' => $default['pdf_download_title'],
     '#maxlength' => 255,
);
### in function webform2pdf_edit_form($form, &$form_state, $node) in line about 580
#   after:

$form['base']['page_orientation'] = array(
    '#type' => 'radios',
    '#title' => t('Page orientation'),
    '#default_value' => $default['page_orientation'],
    '#options' => array(
      'P' => t('Portrait'),
      'L' => t('Landscape'),
    ),
  );
##
# I added
##
  // download settings
$form['download'] = array(
      '#type' => 'fieldset',
      '#title' => t('User download settings'),
      '#collapsible' => TRUE,
      '#collapsed' => TRUE,
      '#states' => array(
        'visible' => array(
          'input[name="enabled"]' => array('checked' => TRUE),
  		),
  	),
);
$form['download']['pdf_download_show'] = array(
      '#type' => 'checkbox',
      '#title' => t('Display download link.'),
      '#description' => t('Display download link for download PDF file after form submit. Possible only if in "Form settings" selected "Confirmation page" for redirect'),
      '#default_value' => $default['pdf_download_show'],
  );
  $form['download']['pdf_download_title'] = array(
  	    '#type' => 'textfield',
  	    '#title' => t('Title for download link.'),
  	    '#default_value' => $default['pdf_download_title'],
  	    '#maxlength' => 255,
);
##
# in function webform2pdf_edit_form_submit($form, &$form_state)
##
# after (line about 1050)
$save['p_body'] = $form_state['values']['p_body']['value'];
$save['format'] = $form_state['values']['p_body']['format'];

# added
$save['pdf_download_show'] = $form_state['values']['pdf_download_show'];
$save['pdf_download_title'] = $form_state['values']['pdf_download_title'];

# in db_insert('webform2pdf') (line about 1100) added
'pdf_download_show' => $save['pdf_download_show'],
'pdf_download_title' => $save['pdf_download_title'],

# after (line about 1150)
$save['p_body'] = $webform2pdf_default['p_body'];
$save['format'] = $webform2pdf_default['format'];

# I added
$save['pdf_download_show'] = $webform2pdf_default['pdf_download_show'];
$save['pdf_download_title'] = $webform2pdf_default['pdf_download_title'];

# in db_update('webform2pdf') (line ~ 1180) added
'pdf_download_show' => $save['pdf_download_show'],
'pdf_download_title' => $save['pdf_download_title'],

Now go to file webform2pdf.download.inc

###
# in end added
###
/**
 * frontend download callback
 */
function webform2pdf_submission_download_pdf_site($node, $sid){
	if (!is_numeric($sid)) {drupal_not_found();}
	//check access to own
	if(!empty($_SESSION['webform2pdf'][ip_address()]['sids']) && in_array($sid,$_SESSION['webform2pdf'][ip_address()]['sids']) ){
		if($submission = webform_get_submission($node->nid, $sid)){
			return webform2pdf_submission_download_pdf($node, $submission,'I');
		}
	}
	drupal_access_denied();
}

And last changes in file webform2pdf.module

###
#in function webform2pdf_menu() add next:
##
$items['webform2pdf/%webform_menu/%/download'] = array(
    'title' => 'Download PDF',
    'page callback' => 'webform2pdf_submission_download_pdf_site',
    'page arguments' => array(1, 2),
    'access callback' => 'node_access',
    'access arguments' => array('view', 1),
    'file' => 'includes/webform2pdf.download.inc',
);

###
# in function theme_webform2pdf_content($vars) change this:
##
$p_body = _webform_filter_values($vars['template']['p_body'], $vars['node'], $vars['submission'], $email, false);

# to this
$p_body = _webform_filter_values($vars['template']['p_body'], $vars['node'], $vars['submission'], $email, false, true);

###
# and in end of the file added
###
/**
 * hook_form_FORM_ID_alter()
 */
function webform2pdf_form_webform_client_form_alter(&$form, &$form_state) {
	//check whether we need show link
	$webform2pdf = _webform2pdf_get_template($form['#node']->nid);
	if ($webform2pdf['pdf_download_show']){
		//attach submit function to form
		$form['#submit'][] = 'webform2pdf_client_form_submit';
		//save setting in to $form_state
		//$form_state['webform2pdf'] = $webform2pdf;
	}
	
}
/**
 * function called when webform_client_form submited
 * look: webform2pdf_form_webform_client_form_alter()
 */
function webform2pdf_client_form_submit(&$form, &$form_state){
	if ($form_state['webform_completed'] && !empty($form_state['values']['details']['sid'])){
		drupal_session_start();
		$_SESSION['webform2pdf'][ip_address()]['sids'][] = $form_state['values']['details']['sid'];
	}
}
function webform2pdf_preprocess_webform_confirmation(&$vars) {
	
	//check whether we need show link
	$webform2pdf = _webform2pdf_get_template($vars['node']->nid);
	if ($webform2pdf['pdf_download_show']){
		//build link
		//$path = webform2pdf_url_encode($vars['node']->nid, $vars['sid'], false);
		$path = 'webform2pdf/'.$vars['node']->nid.'/'.$vars['sid'].'/download';
		$title = empty($webform2pdf['pdf_download_title'])?t('Download PDF'):$webform2pdf['pdf_download_title'];
		$link = '<div class="download-link">'.l($title, $path, array( 'attributes' => array('target'=>'_blank','class' =>array('download-pdf')) )).'</div>';
		//add link to message
		$vars['confirmation_message'] = !empty($vars['confirmation_message']) ? $vars['confirmation_message'].$link : $link;
		
	}

}

That`s all, i hope it helps for someone ;)