87 lines
2.2 KiB
PHP
87 lines
2.2 KiB
PHP
<?php
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/**
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* Base class for a context reaction.
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*/
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class context_reaction {
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var $plugin;
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var $title;
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var $description;
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/**
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* Clone our references when we're being cloned.
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*
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* PHP 5.3 performs 'shallow' clones when clone()'ing objects, meaning that
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* any objects or arrays referenced by this object will not be copied, the
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* cloned object will just reference our objects/arrays instead. By iterating
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* over our properties and serializing and unserializing them, we force PHP to
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* copy them.
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*/
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function __clone() {
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foreach ($this as $key => $val) {
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if (is_object($val) || (is_array($val))) {
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$this->{$key} = unserialize(serialize($val));
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}
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}
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}
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/**
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* Constructor. Do not override.
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*/
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function __construct($plugin, $info) {
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$this->plugin = $plugin;
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$this->title = isset($info['title']) ? $info['title'] : $plugin;
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$this->description = isset($info['description']) ? $info['description'] : '';
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}
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function options_form($context) {
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return array();
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}
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/**
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* Options form submit handler.
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*/
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function options_form_submit($values) {
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return $values;
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}
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/**
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* Settings form. Provide variable settings for your reaction.
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*/
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function settings_form() {
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return array();
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}
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/**
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* Public method that is called from hooks or other integration points with
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* Drupal. Note that it is not implemented in the base class, allowing
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* extending classes to change the function signature if necessary.
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*
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* function execute($value) {
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* foreach ($this->get_contexts($value) as $context) {
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* $this->condition_met($context, $value);
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* }
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* }
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*/
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/**
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* Retrieve active contexts that have values for this reaction.
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*/
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function get_contexts() {
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$contexts = array();
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foreach (context_active_contexts() as $context) {
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if ($this->fetch_from_context($context)) {
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$contexts[$context->name] = $context;
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}
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}
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return $contexts;
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}
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/**
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* Retrieve options from the context provided.
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*/
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function fetch_from_context($context) {
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return isset($context->reactions[$this->plugin]) ? $context->reactions[$this->plugin] : array();
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}
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}
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