config['system']['addon'] = 'plugin1,plugin2,etc.';
*
* When registration is detected, the system calls the plugin
* name_install() function, located in 'addon/name/name.php',
* where 'name' is the name of the addon.
* If the addon is removed from the configuration list, the
* system will call the name_unistall() function.
*
*/
function randplace_install() {
/**
*
* Our demo plugin will attach in three places.
* The first is just prior to storing a local post.
*
*/
register_hook('post_local', 'addon/randplace/randplace.php', 'randplace_post_hook');
/**
*
* Then we'll attach into the settings page, on both the
* form and post hooks so that we can create and update
* user preferences.
*
*/
register_hook('settings_form', 'addon/randplace/randplace.php', 'randplace_settings');
register_hook('settings_post', 'addon/randplace/randplace.php', 'randplace_settings_post');
logger("installed randplace");
}
function randplace_uninstall() {
/**
*
* uninstall unregisters any hooks created with register_hook
* during install. It may also delete configuration settings
* and any other cleanup.
*
*/
unregister_hook('post_local', 'addon/randplace/randplace.php', 'randplace_post_hook');
unregister_hook('settings_form', 'addon/randplace/randplace.php', 'randplace_settings');
unregister_hook('settings_post', 'addon/randplace/randplace.php', 'randplace_settings_post');
logger("removed randplace");
}
function randplace_post_hook($a, &$item) {
/**
*
* An item was posted on the local system.
* We are going to look for specific items:
* - A status post by a profile owner
* - The profile owner must have allowed our plugin
*
*/
logger('randplace invoked');
if(! local_user()) /* non-zero if this is a logged in user of this system */
return;
if(local_user() != $item['uid']) /* Does this person own the post? */
return;
if($item['parent']) /* If the item has a parent, this is a comment or something else, not a status post. */
return;
/* Retrieve our personal config setting */
$active = get_pconfig(local_user(), 'randplace', 'enable');
if(! $active)
return;
/**
*
* OK, we're allowed to do our stuff.
* Here's what we are going to do:
* load the list of timezone names, and use that to generate a list of world cities.
* Then we'll pick one of those at random and put it in the "location" field for the post.
*
*/
$cities = array();
$zones = timezone_identifiers_list();
foreach($zones as $zone) {
if(strpos($zone,'/'))
$cities[] = str_replace('_', ' ',substr($zone,strpos($zone,'/') + 1));
}
if(! count($cities))
return;
$city = array_rand($cities,1);
$item['location'] = $cities[$city];
return;
}
/**
*
* Callback from the settings post function.
* $post contains the $_POST array.
* We will make sure we've got a valid user account
* and if so set our configuration setting for this person.
*
*/
function randplace_settings_post($a,$post) {
if(! local_user())
return;
set_pconfig(local_user(),'randplace','enable',intval($_POST['randplace']));
}
/*
* Called from the end of the settings form.
* Add our own settings info to the page.
*
*/
function randplace_settings(&$a,&$s) {
if(! local_user())
return;
$a->page['htmlhead'] .= '' . "\r\n";
$enabled = get_pconfig(local_user(),'randplace','enable');
$checked = (($enabled) ? ' checked="checked" ' : '');
$s .= '