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<?php
/**
* @file
* Ctools access plugin to provide access/visiblity if two user contexts are equal.
*/
/**
* Plugins are described by creating a $plugin array which will be used
* by the system that includes this file.
*/
$plugin = array(
'title' => t("User: compare"),
'description' => t('Compare two users (logged-in user and user being viewed, for example)'),
'callback' => 'ctools_compare_users_access_check',
'default' => array(
'equality' => 1,
),
'settings form' => 'ctools_compare_users_settings',
'summary' => 'ctools_compare_users_ctools_access_summary',
'required context' => array(
new ctools_context_required(t('First User'), 'user'),
new ctools_context_required(t("Second User"), 'user')
),
);
/**
* Settings form for the 'by perm' access plugin
*/
function ctools_compare_users_settings($form, &$form_state, $conf) {
$form['settings']['helptext'] = array(
'#type' => 'markup',
'#value' => '<div>' . t('Grant access based on comparison of the two user contexts. For example, to grant access to a user to view their own profile, choose "logged in user" and "user being viewed" and say "grant access if equal". When they\'re the same, access will be granted.') . '</div>',
);
$form['settings']['equality'] = array(
'#type' => 'radios',
'#title' => t('Grant access if user contexts are'),
'#options' => array(1 => t('Equal'), 0 => t('Not equal')),
'#default_value' => $conf['equality'],
);
return $form;
}
/**
* Check for access.
*/
function ctools_compare_users_access_check($conf, $context) {
if (empty($context) || count($context) != 2 || empty($context[0]->data) || empty($context[1]->data)) {
return FALSE;
}
$account1 = $context[0]->data;
$account2 = $context[1]->data;
// xor returns false if the two bools are the same, and true if they are not.
// i.e, if we asked for equality and they are equal, return true.
// If we asked for inequality and they are equal, return false.
return ($account1->uid == $account2->uid) xor empty($conf['equality']);
}
/**
* Describe an instance of this plugin.
*/
function ctools_compare_users_ctools_access_summary($conf, $context) {
$comparison = !empty($conf['equality']) ? "is" : 'is not';
return t('@id1 @comp @id2', array('@comp' => $comparison, '@id1' => $context[0]->identifier, '@id2' => $context[1]->identifier));
}
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