Initial Commit

plugins/jetpack/modules/holiday-snow.php

@@ -0,0 +1,134 @@
+<?php
+
+/**
+ * Holiday Snow
+ * Adds falling snow to a blog starting December 1 and ending January 3.
+ * Not a module that is activated/deactivated
+ * First Introduced: 2.0.3 ??
+ * Requires Connection: No
+ * Auto Activate: Yes
+ */
+
+class Jetpack_Holiday_Snow_Settings {
+	function __construct() {
+		add_filter( 'admin_init' , array( &$this , 'register_fields' ) );
+	}
+
+	public function register_fields() {
+		register_setting( 'general', jetpack_holiday_snow_option_name(), 'esc_attr' );
+		add_settings_field( jetpack_holiday_snow_option_name(), '<label for="' . esc_attr( jetpack_holiday_snow_option_name() ) . '">' . __( 'Snow' , 'jetpack') . '</label>' , array( &$this, 'blog_field_html' ) , 'general' );
+		add_action( 'update_option_' . jetpack_holiday_snow_option_name(), array( &$this, 'holiday_snow_option_updated' ) );
+	}
+
+	public function blog_field_html() {
+		$id = esc_attr( jetpack_holiday_snow_option_name() );
+		?>
+			<label for="<?php echo $id; ?>">
+				<input type="checkbox" name="<?php echo $id; ?>" id="<?php echo $id; ?>" value="letitsnow"<?php checked( get_option( jetpack_holiday_snow_option_name() ), 'letitsnow' ); ?> />
+				<span><?php _e( 'Show falling snow on my blog until January 4<sup>th</sup>.' , 'jetpack'); ?></span>
+			</label>
+		<?php
+	}
+
+	public function holiday_snow_option_updated() {
+
+		/**
+		 * Fires when the holiday snow option is updated.
+		 *
+		 * @module theme-tools
+		 *
+		 * @since 2.0.3
+		 */
+		do_action( 'jetpack_holiday_snow_option_updated' );
+	}
+}
+
+function jetpack_holiday_snow_script() {
+
+	/**
+	 * Allow holiday snow.
+	 *
+	 * Note: there's no actual randomness involved in whether it snows
+	 * or not, despite the filter mentioning a "chance of snow."
+	 *
+	 * @module theme-tools
+	 *
+	 * @since 2.0.3
+	 *
+	 * @param bool True to allow snow, false to disable it.
+	 */
+	if ( ! apply_filters( 'jetpack_holiday_chance_of_snow', true ) )
+		return;
+
+	/**
+	 * Fires when it's snowing.
+	 *
+	 * @module theme-tools
+	 *
+	 * @since 2.0.3
+	 */
+	do_action( 'jetpack_holiday_snowing' );
+
+	/**
+	 * Filter the holiday snow JavaScript URL.
+	 *
+	 * @module theme-tools
+	 *
+	 * @since 2.0.3
+	 *
+	 * @param str URL to the holiday snow JavaScript file.
+	 */
+	$snowstorm_url = apply_filters( 'jetpack_holiday_snow_js_url', plugins_url( 'holiday-snow/snowstorm.js', __FILE__ ) );
+	wp_enqueue_script( 'snowstorm', $snowstorm_url, array(), '1.43.20111201' );
+}
+
+function jetpack_maybe_holiday_snow() {
+	if ( ! jetpack_is_holiday_snow_season() )
+		return;
+
+	if ( is_admin() ) {
+		global $jetpack_holiday_snow;
+		$jetpack_holiday_snow = new Jetpack_Holiday_Snow_Settings();
+	} elseif ( get_option( jetpack_holiday_snow_option_name() ) ) {
+		add_action( 'init', 'jetpack_holiday_snow_script' );
+	}
+}
+
+function jetpack_holiday_snow_option_name() {
+
+	/**
+	 * Filter the holiday snow option name.
+	 *
+	 * @module theme-tools
+	 *
+	 * @since 2.0.3
+	 *
+	 * @param str The holiday snow option name.
+	 */
+	return apply_filters( 'jetpack_holiday_snow_option_name', 'jetpack_holiday_snow_enabled' );
+}
+
+function jetpack_is_holiday_snow_season() {
+	$today          = time();
+	$first_snow_day = mktime( 0, 0, 0, 12, 1 );
+	$last_snow_day  = mktime( 0, 0, 0, 1, 4 );
+
+	$snow = ( $today >= $first_snow_day || $today < $last_snow_day );
+
+	/**
+	 * Filter whether it's winter or not.
+	 *
+	 * You can use this filter if, for example, you live in the
+	 * Southern Hemisphere. In that case, the dates for winter
+	 * above are incorrect for your location.
+	 *
+	 * @module theme-tools
+	 *
+	 * @since 2.1.0
+	 *
+	 * @param bool $snow True if it's snow season, false if not.
+	 */
+	return apply_filters( 'jetpack_is_holiday_snow_season', $snow );
+}
+
+jetpack_maybe_holiday_snow();