Plugins: Make delete plugin message less scary.

This adds a check if the plugin actually has an uninstall routine before saying that its data will be deleted too.

Props samful, joostdevalk, joyously, Chouby, SergeyBiryukov.
Fixes #50346.

git-svn-id: https://develop.svn.wordpress.org/trunk@48451 602fd350-edb4-49c9-b593-d223f7449a82

src/js/_enqueues/wp/updates.js

@@ -2138,11 +2138,21 @@
 		 */
 		$bulkActionForm.on( 'click', '[data-plugin] a.delete', function( event ) {
 			var $pluginRow = $( event.target ).parents( 'tr' ),
+				confirmMessage;
+
+			if ( $pluginRow.hasClass( 'is-uninstallable' ) ) {
 				confirmMessage = sprintf(
 					/* translators: %s: Plugin name. */
 					__( 'Are you sure you want to delete %s and its data?' ),
 					$pluginRow.find( '.plugin-title strong' ).text()
 				);
+			} else {
+				confirmMessage = sprintf(
+					/* translators: %s: Plugin name. */
+					__( 'Are you sure you want to delete %s?' ),
+					$pluginRow.find( '.plugin-title strong' ).text()
+				);
+			}
 
 			event.preventDefault();
 

src/wp-admin/includes/class-wp-plugins-list-table.php

@@ -942,6 +942,10 @@ class WP_Plugins_List_Table extends WP_List_Table {
 			$class .= ' paused';
 		}
 
+		if ( is_uninstallable_plugin( $plugin_file ) ) {
+			$class .= ' is-uninstallable';
+		}
+
 		printf(
 			'<tr class="%s" data-slug="%s" data-plugin="%s">',
 			esc_attr( $class ),