link_views_handler_filter_protocol.inc in Link 6
Same filename and directory in other branches
Contains filter handlers for protocol filters with views.
File
views/link_views_handler_filter_protocol.incView source
<?php
/**
* @file
* Contains filter handlers for protocol filters with views.
*/
/**
* Filter handler for limiting a view to URLs of a certain protocol.
*/
class link_views_handler_filter_protocol extends views_handler_filter_string {
/**
* Set defaults for the filter options.
*/
function options(&$options) {
parent::options($options);
$options['operator'] = 'OR';
$options['value'] = 'http';
$options['case'] = 0;
}
/**
* Define the operators supported for protocols.
*/
function operators() {
$operators = array(
'OR' => array(
'title' => t('Is one of'),
'short' => t('='),
'method' => 'op_protocol',
'values' => 1,
),
);
return $operators;
}
function options_form(&$form, &$form_state) {
parent::options_form($form, $form_state);
$form['case'] = array(
'#type' => 'value',
'#value' => 0,
);
}
/**
* Provide a select list to choose the desired protocols.
*/
function value_form(&$form, &$form_state) {
// We have to make some choices when creating this as an exposed
// filter form. For example, if the operator is locked and thus
// not rendered, we can't render dependencies; instead we only
// render the form items we need.
$which = 'all';
if (!empty($form_state['exposed']) && empty($this->options['expose']['operator'])) {
$which = in_array($this->operator, $this
->operator_values(1)) ? 'value' : 'none';
}
if ($which == 'all' || $which == 'value') {
$form['value'] = array(
'#type' => 'select',
'#title' => t('Protocol'),
'#default_value' => $this->value,
'#options' => drupal_map_assoc(variable_get('filter_allowed_protocols', array(
'http',
'https',
'ftp',
'news',
'nntp',
'telnet',
'mailto',
'irc',
'ssh',
'sftp',
'webcal',
))),
'#multiple' => 1,
'#size' => 4,
'#description' => t('The protocols displayed here are those globally available. You may add more protocols by modifying the <em>filter_allowed_protocols</em> variable in your installation.'),
);
}
}
/**
* Filter down the query to include only the selected protocols.
*/
function op_protocol($field, $upper) {
global $db_type;
$protocols = $this->value;
$where_conditions = array();
foreach ($protocols as $protocol) {
// Simple case, the URL begins with the specified protocol.
$condition = $field . ' LIKE \'' . $protocol . '%\'';
// More complex case, no protocol specified but is automatically cleaned up
// by link_cleanup_url(). RegEx is required for this search operation.
if ($protocol == 'http') {
if ($db_type == 'pgsql') {
// PostGreSQL code has NOT been tested. Please report any problems to the link issue queue.
// pgSQL requires all slashes to be double escaped in regular expressions.
// See http://www.postgresql.org/docs/8.1/static/functions-matching.html#FUNCTIONS-POSIX-REGEXP
$condition .= ' OR ' . $field . ' ~* \'' . '^(([a-z0-9]([a-z0-9\\-_]*\\.)+)(' . LINK_DOMAINS . '|[a-z][a-z]))' . '\'';
}
else {
// mySQL requires backslashes to be double (triple?) escaped within character classes.
// See http://dev.mysql.com/doc/refman/5.0/en/string-comparison-functions.html#operator_regexp
$condition .= ' OR ' . $field . ' REGEXP \'' . '^(([a-z0-9]([a-z0-9\\\\-_]*\\.)+)(' . LINK_DOMAINS . '|[a-z][a-z]))' . '\'';
}
}
$where_conditions[] = $condition;
}
$this->query
->add_where($this->options['group'], implode(' ' . $this->operator . ' ', $where_conditions));
}
}
Classes
Name | Description |
---|---|
link_views_handler_filter_protocol | Filter handler for limiting a view to URLs of a certain protocol. |