Important: #107681 - Disabled state for ShortcutButton and DropDownButton 

Description 

The ShortcutButton and DropDownButton classes in the TYPO3 backend button bar system have been enhanced with new methods to support disabled state functionality. This brings them in line with other button types that already support the disabled state.

Two new methods have been added to both classes:

• isDisabled(): bool - Checks if the button is disabled
• setDisabled(bool $disabled) - Sets the disabled state of the button

When a button is disabled, it is rendered with appropriate HTML attributes and CSS classes to indicate its non-interactive state. For ShortcutButton, the disabled state is applied to both the simple button rendering and the dropdown rendering modes.

Impact 

Extension developers can now programmatically disable shortcut and dropdown buttons in the TYPO3 backend, preventing user interaction when needed. This is particularly useful for:

• Preventing operations during form initialization
• Disabling buttons during async operations
• Conditional button availability based on application state
• Improving user experience on slow network connections

The disabled state is properly propagated through the rendering process:

• For shortcut buttons rendered as GenericButton, the disabled attribute is added to the button element
• For shortcut buttons rendered as DropDownButton, the disabled state is passed to the dropdown button

Migration 

No migration is required. This change is fully backward compatible as it only adds new optional functionality. Existing code will continue to work without modifications.

Example usage for disabling a shortcut button:

$shortcutButton = $buttonBar->makeShortcutButton()
    ->setRouteIdentifier('my_module')
    ->setDisplayName('My Module')
    ->setArguments(['id' => $pageId])
    ->setDisabled(true);
$buttonBar->addButton($shortcutButton);

Example usage for disabling a dropdown button:

$dropdownButton = GeneralUtility::makeInstance(DropDownButton::class)
    ->setLabel('Actions')
    ->setIcon($iconFactory->getIcon('actions-menu'))
    ->setDisabled(true);
$dropdownButton->addItem($item1);
$dropdownButton->addItem($item2);
$buttonBar->addButton($dropdownButton);

Example usage for checking disabled state:

if ($shortcutButton->isDisabled()) {
    // Handle disabled state
}