Feature: enqueue script and stylesheet with notice

README.md

@@ -493,6 +493,36 @@ dismissible notices.
 If you want the notice to be marked as dismissed, but not fade out, you can pass "clear" to the
 `customerCloserAttributes` method: e.g. `$elements->customCloserAttributes('clear')`.
 
+## Custom scripts & styles
+
+Often times, especially for custom notices, you may want to enqueue custom scripts and styles,
+however they should only be enqueued when the notice is displayed. This can be done by using the
+`enqueueScript` and `enqueueStyle` methods on the notice.
+
+### `enqueueScript($src, $deps = [], $ver = false, $args = [])`
+
+Enqueues a script to be loaded when the notice is displayed, following the same parameters as
+`wp_enqueue_script`. The only difference is that the loading strategy is "defer" by default.
+
+```php
+use StellarWP\AdminNotices\AdminNotices;
+
+$notice = AdminNotices::show('my_notice', 'This is a notice')
+    ->enqueueScript('https://example.com/my-script.js', ['jquery']);
+```
+
+### `enqueueStyle($src, $deps = [], $ver = false, $media = 'all')`
+
+Enqueues a style to be loaded when the notice is displayed, following the same parameters as
+`wp_enqueue_style`.
+
+```php
+use StellarWP\AdminNotices\AdminNotices;
+
+$notice = AdminNotices::show('my_notice', 'This is a notice')
+    ->enqueueStylesheet('https://example.com/my-style.css');
+```
+
 ## Resetting dismissed notices
 
 For dismissible notices, when the user dismisses the notice, it is permanently dismissed. If you

src/Actions/DisplayNoticesInAdmin.php

@@ -5,8 +5,6 @@
 
 namespace StellarWP\AdminNotices\Actions;
 
-use DateTimeImmutable;
-use DateTimeZone;
 use StellarWP\AdminNotices\AdminNotice;
 use StellarWP\AdminNotices\Traits\HasNamespace;
 
@@ -31,156 +29,10 @@ public function __invoke(AdminNotice ...$notices)
         }
 
         foreach ($notices as $notice) {
-            if ($this->shouldDisplayNotice($notice)) {
+            if ((new NoticeShouldRender($this->namespace))($notice)) {
                 echo (new RenderAdminNotice($this->namespace))($notice);
             }
         }
     }
-
-    /**
-     * Checks whether the notice should be displayed based on the provided conditions.
-     *
-     * @since 1.0.0
-     */
-    private function shouldDisplayNotice(AdminNotice $notice): bool
-    {
-        return $this->passesDismissedConditions($notice)
-               && $this->passesDateLimits($notice)
-               && $this->passesWhenCallback($notice)
-               && $this->passesUserCapabilities($notice)
-               && $this->passesScreenConditions($notice);
-    }
-
-    /**
-     * Checks whether the notice should be displayed based on the provided date limits.
-     *
-     * @since 1.0.0
-     */
-    private function passesDateLimits(AdminNotice $notice): bool
-    {
-        if (!$notice->getAfterDate() && !$notice->getUntilDate()) {
-            return true;
-        }
-
-        $now = new DateTimeImmutable('now', new DateTimeZone('UTC'));
-
-        if ($notice->getAfterDate() && $notice->getAfterDate() > $now) {
-            return false;
-        }
-
-        if ($notice->getUntilDate() && $notice->getUntilDate() < $now) {
-            return false;
-        }
-
-        return true;
-    }
-
-    /**
-     * Checks whether the notice should be displayed based on the provided callback.
-     *
-     * @since 1.0.0
-     */
-    private function passesWhenCallback(AdminNotice $notice): bool
-    {
-        $callback = $notice->getWhenCallback();
-
-        if ($callback === null) {
-            return true;
-        }
-
-        return $callback();
-    }
-
-    /**
-     * Checks whether user limits were provided and they pass. Only one capability is required to pass, allowing for
-     * multiple users have visibility.
-     *
-     * @since 1.0.0
-     */
-    private function passesUserCapabilities(AdminNotice $notice): bool
-    {
-        $capabilities = $notice->getUserCapabilities();
-
-        if (empty($capabilities)) {
-            return true;
-        }
-
-        foreach ($capabilities as $capability) {
-            if ($capability->currentUserCan()) {
-                return true;
-            }
-        }
-
-        return false;
-    }
-
-    /**
-     * Checks whether the notice is limited to specific screens and the current screen matches the conditions. Only one
-     * screen condition is required to pass, allowing for the notice to appear on multiple screens.
-     *
-     * @since 1.0.0
-     */
-    private function passesScreenConditions(AdminNotice $notice): bool
-    {
-        $screenConditions = $notice->getOnConditions();
-
-        if (empty($screenConditions)) {
-            return true;
-        }
-
-        $screen = get_current_screen();
-        $currentUrl = get_admin_url(null, $_SERVER['REQUEST_URI']);
-
-        foreach ($screenConditions as $screenCondition) {
-            $condition = $screenCondition->getCondition();
-
-            if ($screenCondition->isRegex()) {
-                // do a regex comparison on the current url
-                if (preg_match($condition, $currentUrl) === 1) {
-                    return true;
-                }
-            } elseif (is_string($condition)) {
-                // do a string comparison on the current url
-                if (strpos($currentUrl, $condition) !== false) {
-                    return true;
-                }
-            } else {
-                // compare the condition array against the WP_Screen object
-                foreach ($condition as $property => $value) {
-                    if ($screen->$property === $value) {
-                        return true;
-                    }
-                }
-            }
-        }
-
-        return false;
-    }
-
-    /**
-     * Checks whether the notice has been dismissed by the user.
-     *
-     * @since 1.1.0 added namespacing to the preferences key
-     * @since 1.0.0
-     */
-    private function passesDismissedConditions(AdminNotice $notice): bool
-    {
-        global $wpdb;
-
-        $userPreferences = get_user_meta(get_current_user_id(), $wpdb->get_blog_prefix() . 'persisted_preferences', true);
-
-        $key = "stellarwp/admin-notices/$this->namespace";
-        if (!is_array($userPreferences) || empty($userPreferences[$key])) {
-            return true;
-        }
-
-        $dismissedNotices = $userPreferences[$key];
-
-        if (key_exists($notice->getId(), $dismissedNotices)) {
-            return false;
-        }
-
-        return true;
-    }
 }
 

src/Actions/EnqueueNoticesScriptsAndStyles.php

@@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types=1);
+
+
+namespace StellarWP\AdminNotices\Actions;
+
+use StellarWP\AdminNotices\AdminNotice;
+use StellarWP\AdminNotices\Traits\HasNamespace;
+
+/**
+ * Checks the given admin notices and enqueues their scripts and styles if they exist and should be rendered.
+ *
+ * @unreleased
+ */
+class EnqueueNoticesScriptsAndStyles
+{
+    use HasNamespace;
+
+    /**
+     * @unreleased
+     */
+    public function __invoke(AdminNotice ...$notices)
+    {
+        foreach ($notices as $notice) {
+            $script = $notice->getScriptToEnqueue();
+            $style = $notice->getStyleToEnqueue();
+
+            if (($script || $style) && (new NoticeShouldRender($this->namespace))($notice)) {
+                if ($script) {
+                    $script->enqueue("stellarwp-{$this->namespace}-{$notice->getId()}");
+                }
+
+                if ($style) {
+                    $style->enqueue("stellarwp-{$this->namespace}-{$notice->getId()}");
+                }
+            }
+        }
+    }
+}