plugin install

wp/wp-content/plugins/woocommerce/assets/js/admin/meta-boxes-coupon.js

@@ -0,0 +1,70 @@
+/* global woocommerce_admin_meta_boxes_coupon */
+jQuery(function( $ ) {
+
+	/**
+	 * Coupon actions
+	 */
+	var wc_meta_boxes_coupon_actions = {
+
+		/**
+		 * Initialize variations actions
+		 */
+		init: function() {
+			$( 'select#discount_type' )
+				.on( 'change', this.type_options )
+				.trigger( 'change' );
+
+            this.insert_generate_coupon_code_button();
+			$( '.button.generate-coupon-code' ).on( 'click', this.generate_coupon_code );
+		},
+
+		/**
+		 * Show/hide fields by coupon type options
+		 */
+		type_options: function() {
+			// Get value
+			var select_val = $( this ).val();
+
+			if ( 'percent' === select_val ) {
+				$( '#coupon_amount' ).removeClass( 'wc_input_price' ).addClass( 'wc_input_decimal' );
+			} else {
+				$( '#coupon_amount' ).removeClass( 'wc_input_decimal' ).addClass( 'wc_input_price' );
+			}
+
+			if ( select_val !== 'fixed_cart' ) {
+				$( '.limit_usage_to_x_items_field' ).show();
+			} else {
+				$( '.limit_usage_to_x_items_field' ).hide();
+			}
+        },
+
+        /**
+         * Insert generate coupon code buttom HTML.
+         */
+        insert_generate_coupon_code_button: function() {
+			$( '.post-type-shop_coupon' ).find( '#title' ).after(
+				'<a href="#" class="button generate-coupon-code">' + woocommerce_admin_meta_boxes_coupon.generate_button_text + '</a>'
+			);
+        },
+
+		/**
+		 * Generate a random coupon code
+		 */
+		generate_coupon_code: function( e ) {
+			e.preventDefault();
+			var $coupon_code_field = $( '#title' ),
+				$coupon_code_label = $( '#title-prompt-text' ),
+			    $result = '';
+			for ( var i = 0; i < woocommerce_admin_meta_boxes_coupon.char_length; i++ ) {
+				$result += woocommerce_admin_meta_boxes_coupon.characters.charAt(
+					Math.floor( Math.random() * woocommerce_admin_meta_boxes_coupon.characters.length )
+				);
+			}
+			$result = woocommerce_admin_meta_boxes_coupon.prefix + $result + woocommerce_admin_meta_boxes_coupon.suffix;
+			$coupon_code_field.trigger( 'focus' ).val( $result );
+			$coupon_code_label.addClass( 'screen-reader-text' );
+		}
+	};
+
+	wc_meta_boxes_coupon_actions.init();
+});