gnu-social/plugins/Directory/lib/alphanav.php

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<?php
/**
* StatusNet, the distributed open-source microblogging tool
*
* Widget to display an alphabet menu
*
* PHP version 5
*
* LICENCE: This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category Widget
* @package StatusNet
* @author Zach Copley <zach@status.net>
* @copyright 2011 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*/
if (!defined('STATUSNET')) {
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exit(1);
}
/**
* Outputs a fancy alphabet letter navigation menu
*
* @category Widget
* @package StatusNet
* @author Zach Copley <zach@status.net>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*
* @see HTMLOutputter
*/
class AlphaNav extends Widget
{
protected $action = null;
protected $filters = array();
/**
* Prepare the widget for use
*
* @param Action $action the current action
* @param boolean $numbers whether to output 0..9
* @param Array $prepend array of filters to prepend
* @param Array $append array of filters to append
*/
function __construct(
$action = null,
$numbers = false,
$prepend = false,
$append = false
)
{
parent::__construct($action);
$this->action = $action;
if ($prepend) {
$this->filters = array_merge($prepend, $this->filters);
}
if ($numbers) {
$this->filters = array_merge($this->filters, range(0, 9));
}
if ($append) {
$this->filters = array_merge($this->filters, $append);
}
$this->filters = array_merge($this->filters, range('A', 'Z'));
}
/**
* Show the widget
*
* Emit the HTML for the widget, using the configured outputter.
*
* @return void
*/
function show()
{
$actionName = $this->action->trimmed('action');
$this->action->elementStart('div', array('class' => 'alpha_nav'));
for ($i = 0, $size = sizeof($this->filters); $i < $size; $i++) {
$filter = $this->filters[$i];
$classes = '';
// Add some classes for styling
if ($i == 0) {
$classes .= 'first '; // first filter in the list
} elseif ($i == $size - 1) {
$classes .= 'last '; // last filter in the list
}
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$href = common_local_url(
$actionName,
array('filter' => strtolower($filter))
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);
$params = array('href' => $href);
// sort column
if (!empty($this->action->sort)) {
$params['sort'] = $this->action->sort;
}
// sort order
if ($this->action->reverse) {
$params['reverse'] = 'true';
}
$current = $this->action->arg('filter');
// Highlight the selected filter. If there is no selected
// filter, highlight the first filter in the list
if (!isset($current) && $i == 0
|| $current === strtolower($filter)) {
$classes .= 'current ';
}
if (!empty($classes)) {
$params['class'] = trim($classes);
}
$this->action->element('a', $params, $filter);
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}
$this->action->elementEnd('div');
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}
}