simple-scripts.php

<?php
/**
 * Plugin Name: Simple Scripts Plugin
 * Plugin URI: http://johnregan3.github.io/simple-scripts
 * Description: The simple, solid way to add custom scripts to your WordPress website. Simple Scripts allows you to add your own scripts (including Google Analytics) to your header or footer regardless of what theme you are using.</p>
 * Author: John Regan
 * Author URI: http://johnregan3.me
 * Version: 1.0
 * Text Domain: ssjr3
 *
 * Copyright 2013  John Regan  (email : johnregan3@outlook.com)
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License, version 2, as
 * published by the Free Software Foundation.
 *
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * @package Simple-Scripts
 * @author John Regan
 * @version 1.0
 */


/**
 * Print direct link to Simple Scripts admin page
 *
 * Fetches array of links generated by WP Plugin admin page ( Deactivate | Edit )
 * and inserts a link to the Simple Scripts admin page
 *
 * @since  1.0
 * @param  array $links Array of links generated by WP in Plugin Admin page.
 * @return array $links Array of links to be output on Plugin Admin page.
 */
function ssjr3_settings_link( $links ) {
	$settings_page = '<a href="' . admin_url('tools.php?page=simple-scripts.php' ) .'">Settings</a>';
	array_unshift( $links, $settings_page );
	return $links;
}

$plugin = plugin_basename(__FILE__);

add_filter( "plugin_action_links_$plugin", 'ssjr3_settings_link' );

/**
 * Register text domain
 *
 * @since 1.0
 */
function ssjr3_textdomain() {
	load_plugin_textdomain('ssjr3');
}

add_action('init', 'ssjr3_textdomain');


/**
 * Delete Settings on Uninstall
 *
 * @since 1.0
 */
function ssjr3_uninstall() {
	unregister_setting( 'ssjr3_settings_group', 'ssjr3_settings' );
}

register_uninstall_hook( __FILE__, 'ssjr3_uninstall' );

/**
 * Print Header Scripts
 *
 * @since 1.0
 */
function ssjr3_header_scripts() {
	ob_start();
		$options = get_option( 'ssjr3_settings' );
		$sfhs_header = isset( $options['header_scripts_input'] ) ? $options['header_scripts_input'] : '';
		echo "<script type=text/javascript>\n";
		if ( isset( $options['ssjr3_credit'] ) ) {
			echo "// Rendered by the Simple Scripts Plugin
// http://wordpress.org/plugins/simple-scripts/
 \n";
		}
		echo $sfhs_header;
		echo "\n</script>";
	echo ob_get_clean();
}

/**
 * Print Footer Scripts
 *
 * @since 1.0
 */
function ssjr3_footer_scripts() {
	ob_start();
		$options = get_option( 'ssjr3_settings' );
		$sfhs_footer = isset( $options['footer_scripts_input'] ) ? $options['footer_scripts_input'] : '';
		echo "<script type=text/javascript>\n";
		if ( isset( $options['ssjr3_credit'] ) ) {
			echo "// Rendered by the Simple Scripts Plugin
// http://wordpress.org/plugins/simple-scripts/
\n";
		}
		echo $sfhs_footer;
		echo "\n</script>";
	echo ob_get_clean();
}

/**
 * Attaches Scripts to Hooks to be rendered
 *
 * @since 1.0
 */
function ssjr3_render_scripts() {
	$options = get_option( 'ssjr3_settings' );
	if ( isset( $options['header_scripts_input'] ) )
		add_action( 'wp_head', 'ssjr3_header_scripts' );

	if ( isset( $options['footer_scripts_input'] ) )
		add_action( 'wp_footer', 'ssjr3_footer_scripts' );
}

add_action( 'init', 'ssjr3_render_scripts' );

/**
 * Register "Header/Footer Scripts" submenu in "Tools" Admin Menu
 *
 * @since 1.0
 */
function ssjr3_register_submenu_page() {
	add_management_page( __( 'Simple Scripts', 'ssjr3' ), __( 'Header/Footer Scripts', 'ssjr3' ), 'edit_themes', basename(__FILE__), 'ssjr3_render_submenu_page' );
}

add_action( 'admin_menu', 'ssjr3_register_submenu_page' );


/**
 * Register settings
 *
 * @since 1.0
 */
function ssjr3_register_settings() {
	register_setting( 'ssjr3_settings_group', 'ssjr3_settings' );

	add_settings_section( 'ssjr3_primary_section', __( '', 'rt_polls' ), 'ssjr3_primary_section_cb', __FILE__ );

	add_settings_field( 'ssjr3_header_scripts_input', __( 'Header Scripts', 'rt_polls' ), 'ssjr3_header_scripts_input', __FILE__, 'ssjr3_primary_section' );

	add_settings_field( 'ssjr3_footer_scripts_input', __( 'Footer Scripts', 'rt_polls' ), 'ssjr3_footer_scripts_input', __FILE__, 'ssjr3_primary_section' );

	add_settings_field( 'ssjr3_credit', __( 'This Plugin is Really Helpful!', 'rt_polls' ), 'ssjr3_credit', __FILE__, 'ssjr3_primary_section' );
}

add_action('admin_init', 'ssjr3_register_settings');

/**
 * Render Primary Section text
 *
 * @since  1.0
 */
function ssjr3_primary_section_cb() {}

/**
 * Render Header Scripts Input
 *
 * @since  1.0
 */
function ssjr3_header_scripts_input() {
	$options  = get_option('ssjr3_settings');
	$field_value   = isset( $options['header_scripts_input'] ) ? $options['header_scripts_input'] : ''; ?>
	<textarea id="header-scripts-input" name="ssjr3_settings[header_scripts_input]" placeholder="Header Scripts" style="width:300px; height: 200px;" ><?php echo esc_html( $field_value ) ?></textarea>
	<?php
}

/**
 * Render Footer Scripts Input
 *
 * @since  1.0
 */
function ssjr3_footer_scripts_input() {
	$options  = get_option('ssjr3_settings');
	$field_value   = isset( $options['footer_scripts_input'] ) ? $options['footer_scripts_input'] : ''; ?>
	<textarea id="footer-scripts-input" name="ssjr3_settings[footer_scripts_input]" placeholder="Footer Scripts" style="width:300px; height: 200px;" ><?php echo esc_html( $field_value ) ?></textarea>
	<?php
}

/**
 * Render Credit Author checkbox
 *
 * @since  1.0
 */
function ssjr3_credit() {
	$options = get_option('ssjr3_settings');
	$field_value = isset( $options['ssjr3_credit'] ) ? $options['ssjr3_credit'] : 1;
	?>
		<input type="checkbox" name="ssjr3_settings[ssjr3_credit]" value="1" <?php checked( 1, $field_value ) ?> />
		<p style="width: 300px;" class="description">
			<?php _e( 'Print credit to the author along with your script(s).  Nothing will be publicly visible on your site.', 'ssjr3' ) ?>
		</p>
	<?php
}

/**
 * Render Plugin submenu page
 *
 * @since 1.0
 */
function ssjr3_render_submenu_page() {
	if ( isset( $_GET['settings-updated'] ) ) : ?>
		<div id="message" class="updated"><p><?php _e( 'Scripts updated successfully.' ); ?></p></div>
	<?php endif; ?>
	<div class="wrap">
		<?php screen_icon(); ?>
        <h2><?php _e( 'Simple Scripts Plugin', 'ssjr3' ); ?></h2>

        <!-- CodeMirror -->
        <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/codemirror/4.2.0/codemirror.css">
        <script src="//cdnjs.cloudflare.com/ajax/libs/codemirror/4.2.0/codemirror.min.js"></script>
        <script src="//cdnjs.cloudflare.com/ajax/libs/codemirror/4.2.0/addon/runmode/colorize.js"></script>
        <script src="//cdnjs.cloudflare.com/ajax/libs/codemirror/4.2.0/addon/runmode/runmode.js"></script>
        <script src="//cdnjs.cloudflare.com/ajax/libs/codemirror/4.2.0/addon/edit/matchbrackets.js"></script>
        <script src="//cdnjs.cloudflare.com/ajax/libs/codemirror/4.2.0/addon/comment/continuecomment.js"></script>
        <script src="//cdnjs.cloudflare.com/ajax/libs/codemirror/4.2.0/addon/comment/comment.js"></script>
        <script src="//cdnjs.cloudflare.com/ajax/libs/codemirror/4.2.0/mode/javascript/javascript.js"></script>

        <!-- to add your own plugin, specify it below and also specify in the options section below
        <script src=""></script>
        -->

        <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/codemirror/4.2.0/theme/neo.css">
        <!-- to add your own theme, specify it below and also specify in the options section below
        <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/codemirror/4.2.0/theme/night.css">
        -->


		<p><?php _e('Add your own scripts (including Google Analytics) to your header or footer regardless of what theme you are using.', 'ssjr3') ?></p>
		<p><a href="https://github.com/johnregan3/simple-scripts/wiki">Get Help at the Simple Scripts Plugin Wiki</a></p>
		<form name="ssjr3-form" action="options.php" method="post" enctype="multipart/form-data">
			<?php settings_fields('ssjr3_settings_group'); ?>
			<?php do_settings_sections( __FILE__ ); ?>
			<p class="submit">
				<input name="scripts-submit" type="submit" class="button-primary" value="<?php esc_attr_e( 'Update Scripts', 'ssjr3' ); ?>" />
			</p>
		</form>

	</div>
    <script>

      // Add additional Code Mirror Options here

      var codeMirrorOptions = {
        mode: "text/javascript",
        lineNumbers: true,
        matchBrackets: true,
        continueComments: "Enter",
        theme: "neo",
        extraKeys: {"Ctrl-Q": "toggleComment"}
      }

      var header_editor = CodeMirror.fromTextArea(
        document.getElementById("header-scripts-input"),
        codeMirrorOptions);
      var footer_editor = CodeMirror.fromTextArea(
        document.getElementById("footer-scripts-input"),
        codeMirrorOptions);

    </script>

	<?php
}