【WordPress】WordPressのビジュアルエディタにフリッカーの画像検索ができるボタンを追加するプラグイン

tinymce-flickr.php

<?php
/**
 * Plugin Name: Tinymce Flickr
 * Version: 0.1-alpha
 * Description: PLUGIN DESCRIPTION HERE
 * Author: kurozumi
 * Author URI: http://a-zumi.net
 * Plugin URI: PLUGIN SITE HERE
 * Text Domain: tinymce-flickr
 * Domain Path: /languages
 * @package Tinymce-flickr
 */

if (is_admin())
{
	$tinymce_flickr = new TinyMCEFlickr;
	$tinymce_flickr->register();
}

class TinyMCEFlickr
{
	public function register()
	{
		add_action("plugins_loaded", array($this, "plugins_loaded"));
	}

	public function plugins_loaded()
	{
		add_action("admin_init", array($this, "admin_init"));
	}

	public function admin_init()
	{
		// ビジュアルエディタにボタン追加
		add_filter("mce_buttons", array($this, "mce_buttons"));
		
		// ビジュアルエディタに追加したボタン用のjsを登録
		add_filter("mce_external_plugins", array($this, "mce_external_plugins"));
	}
	
	public function mce_buttons($buttons)
	{
		array_push($buttons, "tinymce_flickr");
		return $buttons;
	}

	public function mce_external_plugins($plugins)
	{
		$plugins["tinymce_flickr"] = plugins_url("/plugin.js", __FILE__);
		return $plugins;
	}
}