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<?php
$plugin = array(
'title' => t("Context exists"),
'description' => t('Control access by whether or not a context exists and contains data.'),
'callback' => 'ctools_context_exists_ctools_access_check',
'settings form' => 'ctools_context_exists_ctools_access_settings',
'summary' => 'ctools_context_exists_ctools_access_summary',
'required context' => new ctools_context_required(t('Context'), 'any'),
'defaults' => array(
'exists' => TRUE,
),
);
function ctools_context_exists_ctools_access_settings(&$form, &$form_state, $conf) {
$form['settings']['exists'] = array(
'#type' => 'radios',
'#description' => t("Check to see if the context exists (contains data) or does not exist (contains no data). For example, if a context is optional and the path does not contain an argument for that context, it will not exist."),
'#options' => array(
TRUE => t('Exists'),
FALSE => t("Doesn't exist"),
),
'#default_value' => $conf['exists'],
);
}
function ctools_context_exists_ctools_access_check($conf, $context) {
return empty($context->data) xor !empty($conf['exists']);
}
function ctools_context_exists_ctools_access_summary($conf, $context) {
if (!empty($conf['exists'])) {
return t('@identifier exists', array(
'@identifier' => $context->identifier,
));
}
else {
return t('@identifier does not exist', array(
'@identifier' => $context->identifier,
));
}
}