AbstractUiWidget (JavaDocs for mmm-all 1.0.0-SNAPSHOT)

java.lang.Object
- io.github.mmm.ui.api.widget.AbstractUiWidget

All Implemented Interfaces:

EventSource<UiEvent,UiEventListener>, AttributeReadEnabled, AttributeReadId, AttributeReadValid, AttributeReadVisible, AttributeWriteEnabled, AttributeWriteId, AttributeWriteReadOnly, AttributeWriteTooltip, AttributeWriteVisible, UiWidget

Direct Known Subclasses:

AbstractUiCustomWidget, AbstractUiNativeWidget
```
public abstract class AbstractUiWidget
extends Object
implements UiWidget
```
Abstract base implementation of UiWidget.

Since:

1.0.0

Constructor Summary

Constructors
Constructor Description

AbstractUiWidget()
The constructor.

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`static boolean`	`isEmpty(String value)`	Null-safe variant of `String.isEmpty()` for convenience.
`protected abstract void`	`setParent(UiComposite<?> parent)`
`protected static void`	`setParent(UiWidget widget, UiComposite<?> parent)`
`protected abstract UiNativeWidget`	`unwrap()`
`protected <T extends UiNativeWidget> T`	`unwrap(UiWidget widget)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface io.github.mmm.ui.api.attribute.AttributeReadId
getId

Methods inherited from interface io.github.mmm.ui.api.attribute.AttributeWriteId
setId

Methods inherited from interface io.github.mmm.ui.api.attribute.AttributeWriteTooltip
getTooltip, setTooltip

Methods inherited from interface io.github.mmm.event.EventSource
addListener, addListener, addWeakListener, removeListener

Methods inherited from interface io.github.mmm.ui.api.widget.UiWidget
cast, dispose, getModificationTimestamp, getParent, getReadOnlyFixed, getStyles, isDisposed, isEnabled, isEnabled, isFocused, isModified, isReadOnly, isValid, isVisible, isVisible, reset, setEnabled, setEnabled, setFocused, setReadOnly, setReadOnlyFixed, setVisible, setVisible, validate, validate, validate, validateDown, validateUp

- Constructor Detail
  - AbstractUiWidget
```
public AbstractUiWidget()
```
    The constructor.
- Method Detail
  - setParent
```
protected abstract void setParent(UiComposite<?> parent)
```
    Parameters:
    
    parent - the new parent.
  - setParent
```
protected static void setParent(UiWidget widget,
                                UiComposite<?> parent)
```
    Parameters:
    
    widget - the UiWidget.
    
    parent - the new parent.
    
    See Also:
    
    setParent(UiComposite)
  - unwrap
```
protected abstract UiNativeWidget unwrap()
```
    Returns:
    
    the unwrapped widget.
    
    See Also:
    
    UiCustomWidget.getDelegate()
  - unwrap
```
protected <T extends UiNativeWidget> T unwrap(UiWidget widget)
```
    Type Parameters:
    
    T - type of the expected widget.
    
    Parameters:
    
    widget - the UiWidget to unwrap.
    
    Returns:
    
    the unwrapped native widget.
    
    See Also:
    
    unwrap()
  - isEmpty
```
public static boolean isEmpty(String value)
```
    Null-safe variant of String.isEmpty() for convenience.
    
    Parameters:
    
    value - the String to check.
    
    Returns:
    
    true if the given String is null or empty, false otherwise.