Control

BLUR_DIRECTION indicates the direction a onBlur() should move focus to next.

Checks a React component to see if it has any children in props.

Returns a boolean which indicates if the provided anyComponentOrClass parameter is an instance of Control (if passed an object) or a class derived from Control (if passed a function) or a component derived from Control.

Returns a boolean which indicates if the provided anyComponentOrClass parameter is an instance of React.Component (if passed an object) or a class derived from React.Component (if passed a function) or a component derived from React.Component.

In a command line interface, where focusable controls exist (think Visual Basic for DOS) to get an idea of the concept, we can't completely blur out of EVERY single control.

Something is always going to ALWAYS need to be accept / capture input, be it a Button or TextField or a Menu or a Tab or Tree. But the concept of the Control component is that it can easily allow focus to shift from one component to the next, and allow those components which extend the Control class to easily display one type of blurred output while accepting input once focused.

In order to guarantee this, blur will locate the forward (or reverse component) and 'select' it instead.

Returns a boolean which indicates if the Control instance is un-focusable.

Most Controls which exist will be focusable. It is the deault behavior that a derived Control class is always focusable.

If you want to disable focusable in a specific way, you can override the function and return false instead of true.

For example, consider a TextField whose input might be disabled for now. During the disabled state, canFocus() would return false, but otherwise return true.

Returns a boolean which indicates if a Control instance is focusable.

The default behavior is to always return true unless it is already focused.

The select(control) default behavior will always check the Control instance's canFocus() before doing any work.

Most Controls which exist will be focusable. It is the default behavior that a derived Control class is always focusable.

If you want to disable focusable in a specific way, you can override the function and return false instead of true.

For example, consider a TextField whose input might be disabled for now. During the disabled state, canFocus() would return false, but otherwise return true.

The isBlurred() method returns the inverse of the isFocused() method.

The isDisabled() method returns a boolean which indicates the value of the disabled property as passed into the component.

<Control disabled /> would cause isDisabled() to return true.

<Control /> would cause isDisabled() to return false.

The isEnabled() method returns the inverse value of the isDisabled() method.

<Control disabled /> would cause isEnabled() to return false.

<Control /> would cause isEnabled() to return true.

The isFocusable() method returns a boolean which indicates the value of the field, focusable. It is checked throughout other functions in Control, but can be safely overridden if you would like to extend Control so that it is focusable. The focusable field is normally set to false unless it is set manually, either using a consumer or by extending the Control class.

The isFocused() method returns a boolean which indicates the value of the focused property as passed into the component, as long as it is not disabled.

<Control focused /> would cause isFocused() to return true, unless the Control is disabled.

<Control focused disabled /> would cause isFocused() to return false, and is not a valid state for the Control component.

<Control /> would cause isFocused() to return false.