Class SHierarchyEvent

java.lang.Object

java.util.EventObject

java.awt.AWTEvent

com.vaadin.swingbridge.surrogates.awt.event.SComponentEvent

com.vaadin.swingbridge.surrogates.awt.event.SHierarchyEvent

All Implemented Interfaces:

Serializable

public class SHierarchyEvent
extends SComponentEvent

Surrogate-side port of HierarchyEvent. Source, changed, and changedParent all retyped from Component / Container to Vaadin Component — the surrogate world has no separate Container type (SD_event_port_stance rationale).

The change-flag constants are AWT's, by delegation rather than by value, so bitmask arithmetic on getChangeFlags() results carries across unchanged; the block is emitted by DelegatedConstantsTest from AWT's public runtime API. Delegation also settles what used to need a comment here: HIERARCHY_LAST tracks whatever AWT says it is, rather than a literal that would leave ANCESTOR_RESIZED outside every id <= HIERARCHY_LAST range check (D_missing_constants).

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static final int	ANCESTOR_MOVED
static final int	ANCESTOR_RESIZED
static final int	DISPLAYABILITY_CHANGED
static final int	HIERARCHY_CHANGED
static final int	HIERARCHY_FIRST
static final int	HIERARCHY_LAST
static final int	PARENT_CHANGED
static final int	SHOWING_CHANGED

Fields inherited from class SComponentEvent

COMPONENT_FIRST, COMPONENT_HIDDEN, COMPONENT_LAST, COMPONENT_MOVED, COMPONENT_RESIZED, COMPONENT_SHOWN

Fields inherited from class AWTEvent

ACTION_EVENT_MASK, ADJUSTMENT_EVENT_MASK, COMPONENT_EVENT_MASK, consumed, CONTAINER_EVENT_MASK, FOCUS_EVENT_MASK, HIERARCHY_BOUNDS_EVENT_MASK, HIERARCHY_EVENT_MASK, id, INPUT_METHOD_EVENT_MASK, INVOCATION_EVENT_MASK, ITEM_EVENT_MASK, KEY_EVENT_MASK, MOUSE_EVENT_MASK, MOUSE_MOTION_EVENT_MASK, MOUSE_WHEEL_EVENT_MASK, PAINT_EVENT_MASK, RESERVED_ID_MAX, TEXT_EVENT_MASK, WINDOW_EVENT_MASK, WINDOW_FOCUS_EVENT_MASK, WINDOW_STATE_EVENT_MASK

Fields inherited from class EventObject

source

Constructor Summary

Constructors

Constructor	Description
SHierarchyEvent(com.vaadin.flow.component.Component source, int id, com.vaadin.flow.component.Component changed, com.vaadin.flow.component.Component changedParent)
SHierarchyEvent(com.vaadin.flow.component.Component source, int id, com.vaadin.flow.component.Component changed, com.vaadin.flow.component.Component changedParent, long changeFlags)

Method Summary

Modifier and Type	Method	Description
com.vaadin.flow.component.Component	getChanged()	The component whose hierarchy state changed (may equal the source).
com.vaadin.flow.component.Component	getChangedParent()	The parent of changed at the moment the event fires.
long	getChangeFlags()	Bit-or of the PARENT_CHANGED / DISPLAYABILITY_CHANGED / SHOWING_CHANGED flags describing what about the hierarchy actually changed.
String	paramString()

Methods inherited from class SComponentEvent

getComponent

Methods inherited from class AWTEvent

consume, getID, isConsumed, setSource, toString

Methods inherited from class EventObject

getSource

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

ANCESTOR_MOVED

public static final int ANCESTOR_MOVED

See Also:

• Constant Field Values

ANCESTOR_RESIZED

public static final int ANCESTOR_RESIZED

See Also:

• Constant Field Values

DISPLAYABILITY_CHANGED

public static final int DISPLAYABILITY_CHANGED

See Also:

• Constant Field Values

HIERARCHY_CHANGED

public static final int HIERARCHY_CHANGED

See Also:

• Constant Field Values

HIERARCHY_FIRST

public static final int HIERARCHY_FIRST

See Also:

• Constant Field Values

HIERARCHY_LAST

public static final int HIERARCHY_LAST

See Also:

• Constant Field Values

PARENT_CHANGED

public static final int PARENT_CHANGED

See Also:

• Constant Field Values

SHOWING_CHANGED

public static final int SHOWING_CHANGED

See Also:

• Constant Field Values

Constructor Details

SHierarchyEvent

public SHierarchyEvent(com.vaadin.flow.component.Component source,
 int id,
 com.vaadin.flow.component.Component changed,
 com.vaadin.flow.component.Component changedParent)

SHierarchyEvent

public SHierarchyEvent(com.vaadin.flow.component.Component source,
 int id,
 com.vaadin.flow.component.Component changed,
 com.vaadin.flow.component.Component changedParent,
 long changeFlags)

Method Details

getChanged

public com.vaadin.flow.component.Component getChanged()

The component whose hierarchy state changed (may equal the source).

getChangedParent

public com.vaadin.flow.component.Component getChangedParent()

The parent of changed at the moment the event fires. For HIERARCHY_CHANGED on a newly-attached component this is the new parent; on a detach this is the old parent. JDK's contract is identical — see HierarchyEvent.getChangedParent().

getChangeFlags

public long getChangeFlags()

Bit-or of the PARENT_CHANGED / DISPLAYABILITY_CHANGED / SHOWING_CHANGED flags describing what about the hierarchy actually changed. Only meaningful for HIERARCHY_CHANGED; returns 0 for the ancestor-moved/resized events.

paramString

public String paramString()

Overrides:

paramString in class SComponentEvent