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## com.google.gwt.user.client.ui
Class FocusPanel

    java.lang.Object
      com.google.gwt.user.client.ui.UIObject
          com.google.gwt.user.client.ui.Widget
              com.google.gwt.user.client.ui.Panel
                  com.google.gwt.user.client.ui.SimplePanel
                      com.google.gwt.user.client.ui.FocusPanel

All Implemented Interfaces:
  HasAllFocusHandlers, HasAllKeyHandlers, HasAllMouseHandlers, HasBlurHandlers, HasClickHandlers, HasFocusHandlers, HasKeyDownHandlers, HasKeyPressHandlers, HasKeyUpHandlers, HasMouseDownHandlers, HasMouseMoveHandlers, HasMouseOutHandlers, HasMouseOverHandlers, HasMouseUpHandlers, HasMouseWheelHandlers, HasHandlers, EventListener, Focusable, HasFocus, HasWidgets, SourcesClickEvents, SourcesFocusEvents, SourcesKeyboardEvents, SourcesMouseEvents, SourcesMouseWheelEvents, java.lang.Iterable<Widget>

    public class FocusPanel

extends SimplePanel
implements HasFocus, SourcesClickEvents, SourcesMouseEvents, SourcesMouseWheelEvents, HasAllMouseHandlers, HasClickHandlers, HasAllKeyHandlers, HasAllFocusHandlers

A simple panel that makes its contents focusable, and adds the ability to catch mouse and keyboard events.

Nested Class Summary

Nested classes/interfaces inherited from class com.google.gwt.user.client.ui.UIObject
`UIObject.DebugIdImpl, UIObject.DebugIdImplEnabled`

Field Summary

Fields inherited from class com.google.gwt.user.client.ui.UIObject
`DEBUG_ID_PREFIX`

Constructor Summary
`FocusPanel()`
`FocusPanel(Widget child)`

Method Summary
`HandlerRegistration` | `addBlurHandler(BlurHandler handler)` Adds a `BlurEvent` handler.
`HandlerRegistration` | `addClickHandler(ClickHandler handler)` Adds a `ClickEvent` handler.
`void` | `addClickListener(ClickListener listener)` Deprecated. Use `addClickHandler(com.google.gwt.event.dom.client.ClickHandler)` instead
`HandlerRegistration` | `addFocusHandler(FocusHandler handler)` Adds a `FocusEvent` handler.
`void` | `addFocusListener(FocusListener listener)` Deprecated. Use `addFocusHandler(com.google.gwt.event.dom.client.FocusHandler)` instead
`void` | `addKeyboardListener(KeyboardListener listener)` Deprecated. Use `addKeyDownHandler(com.google.gwt.event.dom.client.KeyDownHandler)`, `addKeyUpHandler(com.google.gwt.event.dom.client.KeyUpHandler)` and `addKeyPressHandler(com.google.gwt.event.dom.client.KeyPressHandler)` instead
`HandlerRegistration` | `addKeyDownHandler(KeyDownHandler handler)` Adds a `KeyDownEvent` handler.
`HandlerRegistration` | `addKeyPressHandler(KeyPressHandler handler)` Adds a `KeyPressEvent` handler.
`HandlerRegistration` | `addKeyUpHandler(KeyUpHandler handler)` Adds a `KeyUpEvent` handler.
`HandlerRegistration` | `addMouseDownHandler(MouseDownHandler handler)` Adds a `MouseDownEvent` handler.
`void` | `addMouseListener(MouseListener listener)` Deprecated. Use `addMouseOverHandler(com.google.gwt.event.dom.client.MouseOverHandler)`, `addMouseMoveHandler(com.google.gwt.event.dom.client.MouseMoveHandler)`, `addMouseDownHandler(com.google.gwt.event.dom.client.MouseDownHandler)`, `addMouseUpHandler(com.google.gwt.event.dom.client.MouseUpHandler)` and `addMouseOutHandler(com.google.gwt.event.dom.client.MouseOutHandler)` instead
`HandlerRegistration` | `addMouseMoveHandler(MouseMoveHandler handler)` Adds a `MouseMoveEvent` handler.
`HandlerRegistration` | `addMouseOutHandler(MouseOutHandler handler)` Adds a `MouseOutEvent` handler.
`HandlerRegistration` | `addMouseOverHandler(MouseOverHandler handler)` Adds a `MouseOverEvent` handler.
`HandlerRegistration` | `addMouseUpHandler(MouseUpHandler handler)` Adds a `MouseUpEvent` handler.
`HandlerRegistration` | `addMouseWheelHandler(MouseWheelHandler handler)` Adds a `MouseWheelEvent` handler.
`void` | `addMouseWheelListener(MouseWheelListener listener)` Deprecated. Use `addMouseWheelHandler(com.google.gwt.event.dom.client.MouseWheelHandler)` instead
`int` | `getTabIndex()` Gets the widget's position in the tab index.
`void` | `removeClickListener(ClickListener listener)` Deprecated. Use the `HandlerRegistration.removeHandler()` method on the object returned by `addClickHandler(com.google.gwt.event.dom.client.ClickHandler)` instead
`void` | `removeFocusListener(FocusListener listener)` Deprecated. Use the `HandlerRegistration.removeHandler()` method on the object returned by `addFocusHandler(com.google.gwt.event.dom.client.FocusHandler)` instead
`void` | `removeKeyboardListener(KeyboardListener listener)` Deprecated. Use the `HandlerRegistration.removeHandler()` method on the object returned by an add*Handler method instead
`void` | `removeMouseListener(MouseListener listener)` Deprecated. Use the `HandlerRegistration.removeHandler()` method on the object returned by an add*Handler method instead
`void` | `removeMouseWheelListener(MouseWheelListener listener)` Deprecated. Use the `HandlerRegistration.removeHandler()` method on the object returned by `addMouseWheelHandler(com.google.gwt.event.dom.client.MouseWheelHandler)` instead
`void` | `setAccessKey(char key)` Sets the widget's 'access key'.
`void` | `setFocus(boolean focused)` Explicitly focus/unfocus this widget.
`void` | `setTabIndex(int index)` Sets the widget's position in the tab index.

Methods inherited from class com.google.gwt.user.client.ui.SimplePanel
`add, getContainerElement, getWidget, iterator, remove, setWidget`

Methods inherited from class com.google.gwt.user.client.ui.Panel
`adopt, adopt, clear, disown, doAttachChildren, doDetachChildren, onLoad, onUnload, orphan`

Methods inherited from class com.google.gwt.user.client.ui.Widget
`addDomHandler, addHandler, delegateEvent, fireEvent, getHandlerCount, getLayoutData, getParent, isAttached, isOrWasAttached, onAttach, onBrowserEvent, onDetach, removeFromParent, setLayoutData, sinkEvents`

Methods inherited from class com.google.gwt.user.client.ui.UIObject
`addStyleDependentName, addStyleName, ensureDebugId, ensureDebugId, ensureDebugId, getAbsoluteLeft, getAbsoluteTop, getElement, getOffsetHeight, getOffsetWidth, getStyleElement, getStyleName, getStyleName, getStylePrimaryName, getStylePrimaryName, getTitle, isVisible, isVisible, onEnsureDebugId, removeStyleDependentName, removeStyleName, setElement, setElement, setHeight, setPixelSize, setSize, setStyleName, setStyleName, setStyleName, setStylePrimaryName, setStylePrimaryName, setTitle, setVisible, setVisible, setWidth, toString, unsinkEvents`

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

Methods inherited from interface com.google.gwt.event.shared.HasHandlers
`fireEvent`

Constructor Detail

### FocusPanel

    public FocusPanel()

### FocusPanel

    public FocusPanel(Widget child)

Method Detail

### addBlurHandler

    public HandlerRegistration addBlurHandler(BlurHandler handler)

  Description copied from interface: `HasBlurHandlers`
  Adds a `BlurEvent` handler.

  Specified by:
    `addBlurHandler` in interface `HasBlurHandlers`
  Parameters:
    `handler` - the blur handler
  Returns:
    `HandlerRegistration` used to remove this handler

### addClickHandler

    public HandlerRegistration addClickHandler(ClickHandler handler)

  Description copied from interface: `HasClickHandlers`
  Adds a `ClickEvent` handler.

  Specified by:
    `addClickHandler` in interface `HasClickHandlers`
  Parameters:
    `handler` - the click handler
  Returns:
    `HandlerRegistration` used to remove this handler

### addClickListener

    @Deprecated
    public void addClickListener(ClickListener listener)

  Deprecated. Use `addClickHandler(com.google.gwt.event.dom.client.ClickHandler)` instead

  Description copied from interface: `SourcesClickEvents`
  Adds a listener interface to receive click events.

  Specified by:
    `addClickListener` in interface `SourcesClickEvents`
  Parameters:
    `listener` - the listener interface to add

### addFocusHandler

    public HandlerRegistration addFocusHandler(FocusHandler handler)

  Description copied from interface: `HasFocusHandlers`
  Adds a `FocusEvent` handler.

  Specified by:
    `addFocusHandler` in interface `HasFocusHandlers`
  Parameters:
    `handler` - the focus handler
  Returns:
    `HandlerRegistration` used to remove this handler

### addFocusListener

    @Deprecated
    public void addFocusListener(FocusListener listener)

  Deprecated. Use `addFocusHandler(com.google.gwt.event.dom.client.FocusHandler)` instead

  Description copied from interface: `SourcesFocusEvents`
  Adds a listener interface to receive focus events.

  Specified by:
    `addFocusListener` in interface `SourcesFocusEvents`
  Parameters:
    `listener` - the listener interface to add

### addKeyboardListener

    @Deprecated
    public void addKeyboardListener(KeyboardListener listener)

  Deprecated. Use `addKeyDownHandler(com.google.gwt.event.dom.client.KeyDownHandler)`, `addKeyUpHandler(com.google.gwt.event.dom.client.KeyUpHandler)` and `addKeyPressHandler(com.google.gwt.event.dom.client.KeyPressHandler)` instead

  Description copied from interface: `SourcesKeyboardEvents`
  Adds a listener interface to receive keyboard events.

  Specified by:
    `addKeyboardListener` in interface `SourcesKeyboardEvents`
  Parameters:
    `listener` - the listener interface to add

### addKeyDownHandler

    public HandlerRegistration addKeyDownHandler(KeyDownHandler handler)

  Description copied from interface: `HasKeyDownHandlers`
  Adds a `KeyDownEvent` handler.

  Specified by:
    `addKeyDownHandler` in interface `HasKeyDownHandlers`
  Parameters:
    `handler` - the key down handler
  Returns:
    `HandlerRegistration` used to remove this handler

### addKeyPressHandler

    public HandlerRegistration addKeyPressHandler(KeyPressHandler handler)

  Description copied from interface: `HasKeyPressHandlers`
  Adds a `KeyPressEvent` handler.

  Specified by:
    `addKeyPressHandler` in interface `HasKeyPressHandlers`
  Parameters:
    `handler` - the key press handler
  Returns:
    `HandlerRegistration` used to remove this handler

### addKeyUpHandler

    public HandlerRegistration addKeyUpHandler(KeyUpHandler handler)

  Description copied from interface: `HasKeyUpHandlers`
  Adds a `KeyUpEvent` handler.

  Specified by:
    `addKeyUpHandler` in interface `HasKeyUpHandlers`
  Parameters:
    `handler` - the key up handler
  Returns:
    `HandlerRegistration` used to remove this handler

### addMouseDownHandler

    public HandlerRegistration addMouseDownHandler(MouseDownHandler handler)

  Description copied from interface: `HasMouseDownHandlers`
  Adds a `MouseDownEvent` handler.

  Specified by:
    `addMouseDownHandler` in interface `HasMouseDownHandlers`
  Parameters:
    `handler` - the mouse down handler
  Returns:
    `HandlerRegistration` used to remove this handler

### addMouseListener

    @Deprecated
    public void addMouseListener(MouseListener listener)

  Deprecated. Use `addMouseOverHandler(com.google.gwt.event.dom.client.MouseOverHandler)`, `addMouseMoveHandler(com.google.gwt.event.dom.client.MouseMoveHandler)`, `addMouseDownHandler(com.google.gwt.event.dom.client.MouseDownHandler)`, `addMouseUpHandler(com.google.gwt.event.dom.client.MouseUpHandler)` and `addMouseOutHandler(com.google.gwt.event.dom.client.MouseOutHandler)` instead

  Description copied from interface: `SourcesMouseEvents`
  Adds a listener interface to receive mouse events.

  Specified by:
    `addMouseListener` in interface `SourcesMouseEvents`
  Parameters:
    `listener` - the listener interface to add

### addMouseMoveHandler

    public HandlerRegistration addMouseMoveHandler(MouseMoveHandler handler)

  Description copied from interface: `HasMouseMoveHandlers`
  Adds a `MouseMoveEvent` handler.

  Specified by:
    `addMouseMoveHandler` in interface `HasMouseMoveHandlers`
  Parameters:
    `handler` - the mouse move handler
  Returns:
    `HandlerRegistration` used to remove this handler

### addMouseOutHandler

    public HandlerRegistration addMouseOutHandler(MouseOutHandler handler)

  Description copied from interface: `HasMouseOutHandlers`
  Adds a `MouseOutEvent` handler.

  Specified by:
    `addMouseOutHandler` in interface `HasMouseOutHandlers`
  Parameters:
    `handler` - the mouse out handler
  Returns:
    `HandlerRegistration` used to remove this handler

### addMouseOverHandler

    public HandlerRegistration addMouseOverHandler(MouseOverHandler handler)

  Description copied from interface: `HasMouseOverHandlers`
  Adds a `MouseOverEvent` handler.

  Specified by:
    `addMouseOverHandler` in interface `HasMouseOverHandlers`
  Parameters:
    `handler` - the mouse over handler
  Returns:
    `HandlerRegistration` used to remove this handler

### addMouseUpHandler

    public HandlerRegistration addMouseUpHandler(MouseUpHandler handler)

  Description copied from interface: `HasMouseUpHandlers`
  Adds a `MouseUpEvent` handler.

  Specified by:
    `addMouseUpHandler` in interface `HasMouseUpHandlers`
  Parameters:
    `handler` - the mouse up handler
  Returns:
    `HandlerRegistration` used to remove this handler

### addMouseWheelHandler

    public HandlerRegistration addMouseWheelHandler(MouseWheelHandler handler)

  Description copied from interface: `HasMouseWheelHandlers`
  Adds a `MouseWheelEvent` handler.

  Specified by:
    `addMouseWheelHandler` in interface `HasMouseWheelHandlers`
  Parameters:
    `handler` - the mouse wheel handler
  Returns:
    `HandlerRegistration` used to remove this handler

### addMouseWheelListener

    @Deprecated
    public void addMouseWheelListener(MouseWheelListener listener)

  Deprecated. Use `addMouseWheelHandler(com.google.gwt.event.dom.client.MouseWheelHandler)` instead

  Description copied from interface: `SourcesMouseWheelEvents`
  Adds a listener interface to receive mouse events.

  Specified by:
    `addMouseWheelListener` in interface `SourcesMouseWheelEvents`
  Parameters:
    `listener` - the listener interface to add

### getTabIndex

    public int getTabIndex()

  Description copied from interface: `Focusable`
  Gets the widget's position in the tab index.

  Specified by:
    `getTabIndex` in interface `Focusable`
  Returns:
    the widget's tab index

### removeClickListener

    @Deprecated
    public void removeClickListener(ClickListener listener)

  Deprecated. Use the `HandlerRegistration.removeHandler()` method on the object returned by `addClickHandler(com.google.gwt.event.dom.client.ClickHandler)` instead

  Description copied from interface: `SourcesClickEvents`
  Removes a previously added listener interface.

  Specified by:
    `removeClickListener` in interface `SourcesClickEvents`
  Parameters:
    `listener` - the listener interface to remove

### removeFocusListener

    @Deprecated
    public void removeFocusListener(FocusListener listener)

  Deprecated. Use the `HandlerRegistration.removeHandler()` method on the object returned by `addFocusHandler(com.google.gwt.event.dom.client.FocusHandler)` instead

  Description copied from interface: `SourcesFocusEvents`
  Removes a previously added listener interface.

  Specified by:
    `removeFocusListener` in interface `SourcesFocusEvents`
  Parameters:
    `listener` - the listener interface to remove

### removeKeyboardListener

    @Deprecated
    public void removeKeyboardListener(KeyboardListener listener)

  Deprecated. Use the `HandlerRegistration.removeHandler()` method on the object returned by an add*Handler method instead

  Description copied from interface: `SourcesKeyboardEvents`
  Removes a previously added listener interface.

  Specified by:
    `removeKeyboardListener` in interface `SourcesKeyboardEvents`
  Parameters:
    `listener` - the listener interface to remove

### removeMouseListener

    @Deprecated
    public void removeMouseListener(MouseListener listener)

  Deprecated. Use the `HandlerRegistration.removeHandler()` method on the object returned by an add*Handler method instead

  Description copied from interface: `SourcesMouseEvents`
  Removes a previously added listener interface.

  Specified by:
    `removeMouseListener` in interface `SourcesMouseEvents`
  Parameters:
    `listener` - the listener interface to remove

### removeMouseWheelListener

    @Deprecated
    public void removeMouseWheelListener(MouseWheelListener listener)

  Deprecated. Use the `HandlerRegistration.removeHandler()` method on the object returned by `addMouseWheelHandler(com.google.gwt.event.dom.client.MouseWheelHandler)` instead

  Description copied from interface: `SourcesMouseWheelEvents`
  Removes a previously added listener interface.

  Specified by:
    `removeMouseWheelListener` in interface `SourcesMouseWheelEvents`
  Parameters:
    `listener` - the listener interface to remove

### setAccessKey

    public void setAccessKey(char key)

  Description copied from interface: `Focusable`
  Sets the widget's 'access key'. This key is used (in conjunction with a browser-specific modifier key) to automatically focus the widget.

  Specified by:
    `setAccessKey` in interface `Focusable`
  Parameters:
    `key` - the widget's access key

### setFocus

    public void setFocus(boolean focused)

  Description copied from interface: `Focusable`
  Explicitly focus/unfocus this widget. Only one widget can have focus at a time, and the widget that does will receive all keyboard events.

  Specified by:
    `setFocus` in interface `Focusable`
  Parameters:
    `focused` - whether this widget should take focus or release it

### setTabIndex

    public void setTabIndex(int index)

  Description copied from interface: `Focusable`
  Sets the widget's position in the tab index. If more than one widget has the same tab index, each such widget will receive focus in an arbitrary order. Setting the tab index to `-1` will cause this widget to be removed from the tab order.

  Specified by:
    `setTabIndex` in interface `Focusable`
  Parameters:
    `index` - the widget's tab index

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