Feature/control display (#45)

1. フックの順番がへんだったので変更
2. 関数を切り出し

ga-communicator.php

@@ -26,7 +26,7 @@
 }
 
 // Initialize plugin.
-add_action( 'plugin_loaded', function() {
+add_action( 'plugins_loaded', function() {
 	// Add i18n
 	load_plugin_textdomain( 'ga-communicator', false, basename( __DIR__ ) . '/languages' );
 	// Load composer.
@@ -107,3 +107,22 @@ function ga_communicator_popular_posts( $query = [], $conditions = [] ) {
 function ga_communicator_realtime_report( $request = [] ) {
 	return \Kunoichi\GaCommunicator::get_instance()->ga4_realtime_report( $request );
 }
+
+/**
+ * Render body open tag forcibly.
+ *
+ * @return void
+ */
+function ga_communicator_force_body_open() {
+	\Kunoichi\GaCommunicator\Utility\ScriptRenderer::get_instance()->body_open();
+}
+
+/**
+ * Render script tag forcibly.
+ *
+ * @param string $type Type of tag. Default is gtag. "universal" and "manual" is also available.
+ * @return void
+ */
+function ga_communicator_render( $type = 'gtag' ) {
+	echo \Kunoichi\GaCommunicator\Utility\ScriptRenderer::get_instance()->get_tag( $type );
+}

src/Kunoichi/GaCommunicator/Utility/ScriptRenderer.php

@@ -30,14 +30,12 @@ protected function init() {
 	}
 
 	/**
-	 * Render analytics scripts.
+	 * Get tag to render.
+	 *
+	 * @param string $type Tag type. gtag, universal, manual, or ""(empty).
+	 * @return string
 	 */
-	public function render() {
-		$type = $this->setting->get_option( 'tag' );
-		if ( ! $type ) {
-			// No output.
-			return;
-		}
+	public function get_tag( $type = 'gtag' ) {
 		$additional = $this->setting->get_option( 'extra' );
 		$id         = $this->setting->get_option( 'property' );
 		$ga4_id     = $this->setting->get_option( 'ga4-tracking-id' );
@@ -50,7 +48,19 @@ public function render() {
 		}
 		$tag      = $this->setting->placeholder->tag( $type, $id, $additional );
 		$replaced = $this->setting->placeholder->replace( $tag );
-		echo $replaced;
+		return apply_filters( 'ga_communicator_tag', $replaced, $type, $id );
+	}
+
+	/**
+	 * Render analytics scripts.
+	 */
+	public function render() {
+		$type = $this->setting->get_option( 'tag' );
+		if ( ! $type ) {
+			// No output.
+			return;
+		}
+		echo $this->get_tag( $type );
 	}
 
 	/**