Allow the use of callables to determine whether a menu item is disabled or not

README.md

@@ -791,6 +791,12 @@ $menu = (new CliMenuBuilder)
             ->addItem('Nope can\'t see this!', $itemCallable)
             ->disableMenu();
     })
+    ->addItem(
+        'You can only select this item at the weekend!',
+        $itemCallable,
+        false,
+        fn() => (date('N') < 6)
+    )
     ->addLineBreak('-')
     ->build();
 ```

src/Builder/CliMenuBuilder.php

@@ -123,11 +123,21 @@ public function addMenuItem(MenuItemInterface $item) : self
         return $this;
     }
 
+    /**
+     * Add an item to the menu.
+     *
+     * @param string        $text
+     * @param callable      $itemCallable
+     * @param bool          $showItemExtra
+     * @param bool|callable $disabled
+     *
+     * @return $this
+     */
     public function addItem(
         string $text,
         callable $itemCallable,
         bool $showItemExtra = false,
-        bool $disabled = false
+        $disabled = false
     ) : self {
         $this->addMenuItem(new SelectableItem($text, $itemCallable, $showItemExtra, $disabled));
 
@@ -143,22 +153,42 @@ public function addItems(array $items) : self
         return $this;
     }
 
+    /**
+     * Add a checkbox to the menu.
+     *
+     * @param string        $text
+     * @param callable      $itemCallable
+     * @param bool          $showItemExtra
+     * @param bool|callable $disabled
+     *
+     * @return $this
+     */
     public function addCheckboxItem(
         string $text,
         callable $itemCallable,
         bool $showItemExtra = false,
-        bool $disabled = false
+        $disabled = false
     ) : self {
         $this->addMenuItem(new CheckboxItem($text, $itemCallable, $showItemExtra, $disabled));
 
         return $this;
     }
 
+    /**
+     * Add a radio button to the menu.
+     *
+     * @param string        $text
+     * @param callable      $itemCallable
+     * @param bool          $showItemExtra
+     * @param bool|callable $disabled
+     *
+     * @return $this
+     */
     public function addRadioItem(
         string $text,
         callable $itemCallable,
         bool $showItemExtra = false,
-        bool $disabled = false
+        $disabled = false
     ) : self {
         $this->addMenuItem(new RadioItem($text, $itemCallable, $showItemExtra, $disabled));
 

src/MenuItem/CheckboxItem.php

@@ -25,7 +25,7 @@ class CheckboxItem implements MenuItemInterface
     private $showItemExtra;
 
     /**
-     * @var bool
+     * @var bool|callable
      */
     private $disabled;
 
@@ -41,11 +41,21 @@ class CheckboxItem implements MenuItemInterface
      */
     private $style;
 
+    /**
+     * CheckboxItem constructor.
+     *
+     * @param string        $text
+     * @param callable      $selectAction
+     * @param bool          $showItemExtra
+     * @param bool|callable $disabled
+     *
+     * @return void
+     */
     public function __construct(
         string $text,
         callable $selectAction,
         bool $showItemExtra = false,
-        bool $disabled = false
+        $disabled = false
     ) {
         $this->text = $text;
         $this->selectAction = $selectAction;
@@ -60,7 +70,7 @@ public function __construct(
      */
     public function getRows(MenuStyle $style, bool $selected = false) : array
     {
-        return (new SelectableItemRenderer())->render($style, $this, $selected, $this->disabled);
+        return (new SelectableItemRenderer())->render($style, $this, $selected, ! $this->canSelect());
     }
 
     /**
@@ -97,7 +107,9 @@ public function getSelectAction() : ?callable
      */
     public function canSelect() : bool
     {
-        return !$this->disabled;
+        return is_callable($this->disabled)
+            ? (! call_user_func($this->disabled))
+            : (! $this->disabled);
     }
 
     /**

src/MenuItem/RadioItem.php

@@ -25,7 +25,7 @@ class RadioItem implements MenuItemInterface
     private $showItemExtra;
 
     /**
-     * @var bool
+     * @var bool|callable
      */
     private $disabled;
 
@@ -41,11 +41,21 @@ class RadioItem implements MenuItemInterface
      */
     private $style;
 
+    /**
+     * RadioItem constructor.
+     *
+     * @param string        $text
+     * @param callable      $selectAction
+     * @param bool          $showItemExtra
+     * @param bool|callable $disabled
+     *
+     * @return void
+     */
     public function __construct(
         string $text,
         callable $selectAction,
         bool $showItemExtra = false,
-        bool $disabled = false
+        $disabled = false
     ) {
         $this->text = $text;
         $this->selectAction = $selectAction;
@@ -60,7 +70,7 @@ public function __construct(
      */
     public function getRows(MenuStyle $style, bool $selected = false) : array
     {
-        return (new SelectableItemRenderer())->render($style, $this, $selected, $this->disabled);
+        return (new SelectableItemRenderer())->render($style, $this, $selected, ! $this->canSelect());
     }
 
     /**
@@ -117,7 +127,9 @@ function (RadioItem $item) {
      */
     public function canSelect() : bool
     {
-        return !$this->disabled;
+        return is_callable($this->disabled)
+            ? (! call_user_func($this->disabled))
+            : (! $this->disabled);
     }
 
     /**

src/MenuItem/SelectableItem.php

@@ -29,7 +29,7 @@ class SelectableItem implements MenuItemInterface
     private $showItemExtra;
 
     /**
-     * @var bool
+     * @var bool|callable
      */
     private $disabled;
 
@@ -38,11 +38,21 @@ class SelectableItem implements MenuItemInterface
      */
     private $style;
 
+    /**
+     * SelectableItem constructor.
+     *
+     * @param string        $text
+     * @param callable      $selectAction
+     * @param bool          $showItemExtra
+     * @param bool|callable $disabled
+     *
+     * @return void
+     */
     public function __construct(
         string $text,
         callable $selectAction,
         bool $showItemExtra = false,
-        bool $disabled = false
+        $disabled = false
     ) {
         $this->text = $text;
         $this->selectAction = $selectAction;
@@ -57,7 +67,7 @@ public function __construct(
      */
     public function getRows(MenuStyle $style, bool $selected = false) : array
     {
-        return (new SelectableItemRenderer())->render($style, $this, $selected, $this->disabled);
+        return (new SelectableItemRenderer())->render($style, $this, $selected, ! $this->canSelect());
     }
 
     /**
@@ -89,7 +99,9 @@ public function getSelectAction() : ?callable
      */
     public function canSelect() : bool
     {
-        return !$this->disabled;
+        return is_callable($this->disabled)
+            ? (! call_user_func($this->disabled))
+            : (! $this->disabled);
     }
 
     /**