#Mac key shortcut page down code#
The execution key must be a printable character (ASCII code range 33-126).Ĭustom menu accelerator keys must be unique. Ctrl+Alt is the recommended metakey because Ctrl and Ctrl+Shift are commonly used by browsers. The meta key may be Ctrl, Ctrl+Shift, or Ctrl+Alt.
As a general rule, less than 25% of available functions should have accelerator keys.Ĭustom accelerator keys must not override accelerator keys that are used in the menus of ADF Faces-supported browsers (see the browser and system requirements for supported operating systems and browsers in ADF Faces), and must not override accelerator keys that are used in assistive technologies such as screen readers.Ĭustom menu accelerator keys must always be key combinations. To reduce the likelihood of user error, accelerator keys should be used sparingly, and only for frequently and repetitively used functions across applications. When defining accelerator keys, you must follow these guidelines:īecause accelerator keys perform actions directly, if a user presses an accelerator key unintentionally, data may be lost or incorrect data may be entered. All assigned menu accelerator keys are visible when you open the menu, and should be available in both the regular mode and screen reader mode.
For more information about ADF Faces components with their own built-in accelerator keys, see the component tag documentation.ĪDF Faces also enable you to provide custom accelerator keys to specific menu items, as shown in Figure C-3. For example, Ctrl+Alt+M is the accelerator key to open the context menu. Some ADF Faces components have their own built-in accelerator keys. The execution key is the key that is pressed in conjunction with the meta key. The meta key may be Ctrl (Command on a Macintosh keyboard), Alt (Option on a Macintosh keyboard), or Shift. A key combination consists of a meta key and an execution key.
#Mac key shortcut page down windows#
Common accelerator keys in a Windows application, such as Internet Explorer, are Ctrl+O for Open and Ctrl+P for Print.Īccelerator keys are single key presses (for example, Enter and Esc) or key combinations (for example, Ctrl+A) that initiate actions immediately when activated. Accelerator keys are sometimes also called hot keys.
Keyboard shortcuts merely provide an additional way to access a function quickly.Īccelerator keys bypass menu and page navigation and perform actions directly. Users should be able to navigate to all parts and functions of the application using the Tab and arrow keys, without using any keyboard shortcuts.
Keyboard shortcuts are not required for accessibility. Tab traversal, using Tab and Shift+Tab keys: Moves the focus through UI elements on a screen.Īccelerator keys ( hot keys): bypasses menu and page navigation, and performs an action directly, for example, Ctrl+C for Copy.Īccess keys: Moves the focus to a specific UI element, for example, Alt+F for the File menu.ĭefault cursor/focus placement: Puts the initial focus on a component so that keyboard users can start interacting with the page without excessive navigation.Įnter key: Triggers an action when the cursor is in certain fields or when the focus is on a link or button. There are five types of keyboard shortcuts that can be provided in ADF Faces applications: Keyboard shortcuts provide an alternative to pointing devices for navigating the page.
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