'External links',
'description' => 'Alter the display of external links on the site.',
'page callback' => 'drupal_get_form',
'page arguments' => array('extlink_admin_settings'),
'access callback' => 'user_access',
'access arguments' => array('administer site configuration'),
);
return $items;
}
/**
* Implements hook_page_build().
*/
function extlink_page_build() {
$path = drupal_get_path('module', 'extlink');
drupal_add_js($path .'/extlink.js', array('every_page' => TRUE));
drupal_add_js(array('extlink' => array(
'extTarget' => variable_get('extlink_target', 0),
'extClass' => variable_get('extlink_class', 'ext'),
'extLabel' => check_plain(variable_get('extlink_label', t('(link is external)'))),
'extImgClass' => variable_get('extlink_img_class', 0),
'extSubdomains' => variable_get('extlink_subdomains', 1),
'extExclude' => variable_get('extlink_exclude', ''),
'extInclude' => variable_get('extlink_include', ''),
'extCssExclude' => variable_get('extlink_css_exclude', ''),
'extCssExplicit' => variable_get('extlink_css_explicit', ''),
'extAlert' => variable_get('extlink_alert', 0),
'extAlertText' => variable_get('extlink_alert_text', 'This link will take you to an external web site. We are not responsible for their content.'),
'mailtoClass' => variable_get('extlink_mailto_class', 'mailto'),
'mailtoLabel' => check_plain(variable_get('extlink_mailto_label', t('(link sends e-mail)'))),
)), 'setting');
}
function extlink_admin_settings() {
$form = array();
$form['extlink_class'] = array(
'#type' => 'checkbox',
'#title' => t('Place an icon next to external links.'),
'#return_value' => 'ext',
'#default_value' => variable_get('extlink_class', 'ext'),
'#description' => t('Places an !icon icon next to external links.', array('!icon' => theme('image', array('path' => drupal_get_path('module', 'extlink') . '/extlink.png', 'alt' => t('External Links icon'))))),
);
$form['extlink_mailto_class'] = array(
'#type' => 'checkbox',
'#title' => t('Place an icon next to mailto links.'),
'#return_value' => 'mailto',
'#default_value' => variable_get('extlink_mailto_class', 'mailto'),
'#description' => t('Places an !icon icon next to mailto links.', array('!icon' => theme('image',array('path' => drupal_get_path('module', 'extlink') . '/mailto.png', 'alt' => t('Email links icon'))))),
);
$form['extlink_img_class'] = array(
'#type' => 'checkbox',
'#title' => t('Place an icon next to image links.'),
'#return_value' => TRUE,
'#default_value' => variable_get('extlink_img_class', FALSE),
'#description' => t('If checked, images wrapped in an anchor tag will be treated as external links.'),
);
$form['extlink_subdomains'] = array(
'#type' => 'checkbox',
'#title' => t('Exclude links with the same primary domain.'),
'#default_value' => variable_get('extlink_subdomains', 1),
'#description' => t("For example, a link from 'www.example.com' to the subdomain of 'my.example.com' would be excluded."),
);
$form['extlink_target'] = array(
'#type' => 'checkbox',
'#title' => t('Open external links in a new window.'),
'#return_value' => '_blank',
'#default_value' => variable_get('extlink_target', 0),
);
$form['extlink_alert'] = array(
'#type' => 'checkbox',
'#title' => t('Display a pop-up warning when any external link is clicked.'),
'#return_value' => '_blank',
'#default_value' => variable_get('extlink_alert', 0),
);
$form['extlink_alert_text'] = array(
'#type' => 'textarea',
'#title' => t('Text to display in the pop-up warning box.'),
'#rows' => 3,
'#default_value' => variable_get('extlink_alert_text', 'This link will take you to an external web site.'),
'#wysiwyg' => FALSE,
'#states' => array(
// Only show this field when user opts to display a pop-up warning.
'visible' => array(
':input[name="extlink_alert"]' => array('checked' => TRUE),
),
),
);
$patterns = array(
'(example\.com) ' . t('Matches example.com.'),
'(example\.com)|(example\.net) ' . t('Multiple patterns can be strung together by using a pipe. Matches example.com OR example.net.'),
'(links/goto/[0-9]+/[0-9]+) ' . t('Matches links that go through the Links module redirect.'),
);
$wildcards = array(
'. ' . t('Matches any character.'),
'? ' . t('The previous character or set is optional.'),
'\d ' . t('Matches any digit (0-9).'),
'[a-z] ' . t('Brackets may be used to match a custom set of characters. This matches any alphabetic letter.'),
);
$form['patterns'] = array(
'#tree' => FALSE,
'#type' => 'fieldset',
'#title' => t('Pattern matching'),
'#collapsible' => TRUE,
'#collapsed' => TRUE,
'#description' =>
'' . t('External links uses patterns (regular expressions) to match the "href" property of links.') . '
' .
t('Here are some common patterns.') .
theme('item_list', array('items' => $patterns)) .
t('Common special characters:') .
theme('item_list', array('items' => $wildcards)) .
'' . t('All special characters (!characters) must also be escaped with backslashes. Patterns are not case-sensitive. Any pattern supported by JavaScript may be used.', array('!characters' => '^ $ . ? ( ) | * +')) . '
',
);
$form['patterns']['extlink_exclude'] = array(
'#type' => 'textfield',
'#title' => t('Exclude links matching the pattern'),
'#maxlength' => NULL,
'#default_value' => variable_get('extlink_exclude', ''),
'#description' => t('Enter a regular expression for links that you wish to exclude from being considered external.'),
);
$form['patterns']['extlink_include'] = array(
'#type' => 'textfield',
'#title' => t('Include links matching the pattern'),
'#maxlength' => NULL,
'#default_value' => variable_get('extlink_include', ''),
'#description' => t('Enter a regular expression for internal links that you wish to be considered external.'),
);
$form['css_matching'] = array(
'#tree' => FALSE,
'#type' => 'fieldset',
'#title' => t('CSS Matching'),
'#collapsible' => TRUE,
'#collapsed' => TRUE,
'#description' =>
'' . t('Use CSS selectors to exclude entirely or only look inside explicitly specified classes and IDs for external links. These will be passed straight to jQuery for matching.') . '
',
);
$form['css_matching']['extlink_css_exclude'] = array(
'#type' => 'textarea',
'#title' => t('Exclude links inside these CSS selectors'),
'#maxlength' => NULL,
'#default_value' => variable_get('extlink_css_exclude', ''),
'#description' => t('Enter a comma-separated list of CSS selectors (ie "#block-block-2 .content, ul.menu")'),
);
$form['css_matching']['extlink_css_explicit'] = array(
'#type' => 'textarea',
'#title' => t('Only look for links inside these CSS selectors'),
'#maxlength' => NULL,
'#default_value' => variable_get('extlink_css_explicit', ''),
'#description' => t('Enter a comma-separated list of CSS selectors (ie "#block-block-2 .content, ul.menu")'),
);
return system_settings_form($form);
}
function extlink_admin_settings_validate($form, &$form_state) {
// Check if the exclude pattern is a valid regular expression
if ($exclude = $form_state['values']['extlink_exclude']) {
// Testing the regex via replace
$regexeval = @preg_replace('/' . $exclude . '/', '', 'Lorem ipsum');
// If the regex returns NULL, then throw an error and reset the variable
if ($regexeval === NULL) {
form_set_error('extlink_exclude', t('Invalid regular expression.'));
variable_set('extlink_exclude', '');
}
}
// Check if the include pattern is a valid regular expression
if ($include = $form_state['values']['extlink_include']) {
// Testing the regex via replace
$regexeval = @preg_replace('/' . $include . '/', '', 'Lorem ipsum');
// If the regex returns NULL, then throw an error and reset the variable
if ($regexeval === NULL) {
form_set_error('extlink_include', t('Invalid regular expression.'));
variable_set('extlink_include', '');
}
}
}