mirror of
https://github.com/Mibew/button-refresh-plugin.git
synced 2024-11-15 08:44:18 +03:00
126 lines
3.4 KiB
PHP
126 lines
3.4 KiB
PHP
<?php
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/*
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* This file is a part of Mibew Button Refresh Plugin.
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*
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* Copyright 2014 Dmitriy Simushev <simushevds@gmail.com>.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* @file The main file of Mibew:ButtonRefresh plugin.
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*/
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namespace Mibew\Mibew\Plugin\ButtonRefresh;
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use Canteen\HTML5;
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use Mibew\Button\Generator\ImageGenerator;
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use Mibew\EventDispatcher\EventDispatcher;
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use Mibew\EventDispatcher\Events;
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use Mibew\Plugin\PluginManager;
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/**
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* The main plugin's file definition.
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*
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* It only attaches handlers to some events.
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*/
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class Plugin extends \Mibew\Plugin\AbstractPlugin implements \Mibew\Plugin\PluginInterface
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{
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/**
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* List of the plugin configs.
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*
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* @var array
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*/
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protected $config;
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/**
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* Class constructor.
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*
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* @param array $config List of the plugin config. The following options are
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* supported:
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* - 'refresh_frequency': int, time in seconds between button refreshes.
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* The default value is 3.
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*/
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public function __construct($config)
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{
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$this->config = $config + array('refresh_frequency' => 3);
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}
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/**
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* The plugin does not need extra initialization thus it is always ready to
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* work.
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*
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* @return boolean
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*/
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public function initialized()
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{
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return true;
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}
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/**
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* The main entry point of a plugin.
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*/
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public function run()
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{
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$dispatcher = EventDispatcher::getInstance();
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$dispatcher->attachListener(Events::BUTTON_GENERATE, $this, 'alterButton');
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}
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/**
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* Specify version of the plugin.
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*
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* @return string Plugin's version.
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*/
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public static function getVersion()
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{
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return '0.1.0';
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}
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/**
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* A handler for
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* {@link \Mibew\EventDispatcher\Events::BUTTON_GENERATE} event.
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*
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* @param array $args Event arguments.
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*/
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public function alterButton(&$args)
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{
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if ($args['generator'] instanceof ImageGenerator) {
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// Only image buttons should be refreshed
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$script = HTML5\html('script');
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$script->addChild($this->buildRefreshJs($this->config['refresh_frequency']));
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$script->setAttribute('type', 'text/javascript');
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$last_index = count($args['button']->getChildren()) - 1;
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$args['button']->addChildAt($script, $last_index);
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}
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}
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/**
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* Builds JavaScript source for button refresh.
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*
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* @param int $time Interval between button refreshes in seconds.
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* @return string
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*/
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protected function buildRefreshJs($time)
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{
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$js = '(function() {'
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. 'var img = document.getElementById("mibew-agent-button").getElementsByTagName("img")[0];'
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. 'var originalSrc = img.src;'
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. 'setInterval(function() {'
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. 'img.src = originalSrc + "&dummy=" + (new Date()).getTime();'
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. '}, %u);})();';
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return sprintf($js, $time * 1000);
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}
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}
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