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