Intial commit of UC JS

uc-js.js

@@ -0,0 +1,9 @@
+jQuery(document).ready(function($){
+	$('#revertucjs').click(function(){
+		$('.ucjs-content').val($('.ucjs-content-back').val());
+		$('input[name=submit]').attr('disabled', false);
+	});
+	$('.ucjs-content').keyup(function(){
+		$('input[name=submit]').attr('disabled', false);
+	});
+});

uc-js.php

@@ -0,0 +1,154 @@
+<?php
+/**
+ * Plugin Name: UC JavaScript
+ * Description: Allow super admin's to add arbitrary JavaScript to each site on a site by site basis
+ * Author: Josh Roy
+ * Version: 1.0
+ * Text Domain: ucjs
+ */
+
+function ucjs_scripts() {	
+	wp_enqueue_script( 'ucjs-js', plugin_dir_url( __FILE__ ) . '/uc-js.js', array( 'jquery' ));
+}
+add_action( 'admin_enqueue_scripts', 'ucjs_scripts' );
+
+/**
+ * Register text domain
+ *
+ * @since 1.0
+ */
+function ucjs_textdomain() {
+	load_plugin_textdomain( 'ucjs' );
+}
+add_action( 'init', 'ucjs_textdomain' );
+
+
+/**
+ * Delete Options on Uninstall
+ *
+ * @since 1.1
+ */
+function ucjs_uninstall() {
+	delete_option( 'ucjs_settings' );
+}
+register_uninstall_hook( __FILE__, 'ucjs_uninstall' );
+
+
+/**
+ * Enqueue link to add JS through PHP
+ *
+ * This is a typical WP Enqueue statement,
+ * except that the URL of the script is simply a query var.
+ * This query var is passed to the URL, and when it is detected by ucjs_add_trigger(),
+ * It fires ucjs_trigger_check, which writes its PHP/JS to the browser.
+ *
+ * Credit for this technique: @Otto http://ottopress.com/2010/dont-include-wp-load-please/
+ *
+ * @since 1.1
+ */
+function ucjs_register_style() {
+
+	$options     = get_option( 'ucjs_settings' );
+	if(strlen($options['ucjs-content']) == 0) return;
+
+	wp_register_script( 'ucjs', home_url( '/?ucjs=1' ) );
+	wp_enqueue_script( 'ucjs' );
+}
+add_action( 'wp_enqueue_scripts', 'ucjs_register_style', 999 );
+
+/**
+ * Add Query Var Script trigger
+ *
+ * Adds a query var to our script, so it can trigger our psuedo-script
+ *
+ * @since 1.1
+ * @param string $vars
+ * @return array $vars
+ */
+function ucjs_add_trigger( $vars ) {
+	$vars[] = 'ucjs';
+	return $vars;
+}
+add_filter( 'query_vars', 'ucjs_add_trigger' );
+
+/**
+ * If trigger (query var) is tripped, load our pseudo-script
+ *
+ * I'd prefer to esc $content at the very last moment, but we need to allow the > character.
+ *
+ * @since 1.1
+ */
+function ucjs_trigger_check() {
+	if ( intval( get_query_var( 'ucjs' ) ) == 1 ) {
+		ob_start();
+		header( 'Content-type: text/javascript' );
+		$options     = get_option( 'ucjs_settings' );
+		$raw_content = isset( $options['ucjs-content'] ) ? $options['ucjs-content'] : '';
+		$content     = str_replace( '&gt;', '>', $raw_content );
+		echo $content; //xss okay
+		exit;
+		ob_clean();
+	}
+}
+add_action( 'template_redirect', 'ucjs_trigger_check' );
+
+
+/**
+ * Register "Custom JS" submenu in "Appearance" Admin Menu
+ *
+ * @since 1.0
+ */
+function ucjs_register_submenu_page() {
+	add_theme_page( __( 'JavaScript', 'ucjs' ), __( 'JavaScript', 'ucjs' ), 'manage_network', basename( __FILE__ ), 'ucjs_render_submenu_page' );
+}
+add_action( 'admin_menu', 'ucjs_register_submenu_page' );
+
+
+/**
+ * Register settings
+ *
+ * @since 1.0
+ */
+function ucjs_register_settings() {
+	register_setting( 'ucjs_settings_group', 'ucjs_settings' );
+}
+add_action( 'admin_init', 'ucjs_register_settings' );
+
+/**
+ * Render Admin Menu page
+ *
+ * @since 1.0
+ */
+function ucjs_render_submenu_page() {
+
+	$options = get_option( 'ucjs_settings' );
+	$content = isset( $options['ucjs-content'] ) && ! empty( $options['ucjs-content'] ) ? $options['ucjs-content'] : '/* Enter Your Custom JS Here */';
+	$content_back = isset( $options['ucjs-content-back'] ) && ! empty( $options['ucjs-content-back'] ) ? $options['ucjs-content-back'] : $options['ucjs-content'];
+
+	if ( isset( $_GET['settings-updated'] ) ) : ?>
+		<div id="message" class="updated"><p><?php _e( 'Custom JS updated successfully.', 'ucjs' ); ?></p></div>
+	<?php endif; ?>
+	<div class="wrap">
+		<h2 style="margin-bottom: 1em;"><?php _e( 'JavaScript', 'ucjs' ); ?></h2>
+		<form name="ucjs-form" action="options.php" method="post" enctype="multipart/form-data">
+			<?php settings_fields( 'ucjs_settings_group' ); ?>
+			<div id="template">
+				<?php do_action( 'ucjs-form-top' ); ?>
+				<div>
+					<textarea cols="70" rows="30" name="ucjs_settings[ucjs-content]" id="ucjs_settings[ucjs-content]" class="ucjs-content" ><?php echo esc_html( $content ); ?></textarea>
+					<input type="hidden" name="ucjs_settings[ucjs-content-back]" id="ucjs_settings[ucjs-content-back]" value="<?php echo esc_html( $content ); ?>">
+					<input type="hidden" class="ucjs-content-back" value="<?php echo esc_html( $content_back ); ?>">
+				</div>
+				<?php do_action( 'ucjs-textarea-bottom' ); ?>
+				<div>
+                <div>
+                	<a href="#" id="revertucjs">Revert to previous version</a>
+                </div>
+					<?php submit_button( __( 'Update JavaScript', 'ucjs' ), 'primary', 'submit', true, array('disabled' => true) ); ?>
+				</div>
+				<?php do_action( 'ucjs-form-bottom' ); ?>
+			</div>
+		</form>
+	</div>
+	<?php
+}