com.sun.javafx.event

Class EventDispatchTreeImpl

java.lang.Object

com.sun.javafx.event.EventDispatchTreeImpl

All Implemented Interfaces:

EventDispatchTree, EventDispatchChain

public final class EventDispatchTreeImpl
extends java.lang.Object
implements EventDispatchTree

Field Summary

Fields

Modifier and Type	Field and Description
private static int	CAPACITY_GROWTH_FACTOR Must be a power of two.
private EventDispatcher[]	dispatchers
private boolean	expandTailFirstPath
private int[]	nextChildren
private int[]	nextSiblings
private static int	NULL_INDEX
private int	reservedCount
private int	rootIndex
private int	tailFirstIndex
private int	tailLastIndex

Constructor Summary

Constructors

Constructor and Description
EventDispatchTreeImpl()

Method Summary

Modifier and Type	Method and Description
EventDispatchTree	append(EventDispatcher eventDispatcher) Appends the specified EventDispatcher to this chain.
private void	appendSubtree(java.lang.StringBuilder sb, int index)
private void	appendTreeLevel(java.lang.StringBuilder sb, int levelIndex)
private int	copySubtree(EventDispatchTreeImpl srcTree, int srcIndex)
private int	copyTreeLevel(EventDispatchTreeImpl srcTree, int srcLevelIndex)
EventDispatchTree	createTree()
Event	dispatchEvent(Event event) Dispatches the specified event through this EventDispatchChain.
private void	ensureCapacity(int size)
private void	expandTail(int levelIndex)
private static int	getChildIndex(EventDispatchTreeImpl tree, int index)
EventDispatchTree	mergeTree(EventDispatchTree tree)
private void	mergeTreeLevel(EventDispatchTreeImpl srcTree, int dstLevelIndex, int srcLevelIndex)
EventDispatchTree	prepend(EventDispatcher eventDispatcher) Prepends the specified EventDispatcher to this chain.
void	reset()
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

CAPACITY_GROWTH_FACTOR

private static final int CAPACITY_GROWTH_FACTOR

Must be a power of two.

See Also:

Constant Field Values

NULL_INDEX

private static final int NULL_INDEX

See Also:

Constant Field Values

dispatchers

private EventDispatcher[] dispatchers

nextChildren

private int[] nextChildren

nextSiblings

private int[] nextSiblings

reservedCount

private int reservedCount

rootIndex

private int rootIndex

tailFirstIndex

private int tailFirstIndex

tailLastIndex

private int tailLastIndex

expandTailFirstPath

private boolean expandTailFirstPath

Constructor Detail

EventDispatchTreeImpl

public EventDispatchTreeImpl()

Method Detail

reset

public void reset()

createTree

public EventDispatchTree createTree()

Specified by:

createTree in interface EventDispatchTree

mergeTree

public EventDispatchTree mergeTree(EventDispatchTree tree)

Specified by:

mergeTree in interface EventDispatchTree

append

public EventDispatchTree append(EventDispatcher eventDispatcher)

Description copied from interface: EventDispatchChain

Appends the specified EventDispatcher to this chain. Returns a reference to the chain with the appended element.

The caller shouldn't assume that this EventDispatchChain remains unchanged nor that the returned value will reference a different chain after the call. All this depends on the EventDispatchChain implementation.

So the call should be always done in the following form: chain = chain.append(eventDispatcher);

Specified by:

append in interface EventDispatchTree

Specified by:

append in interface EventDispatchChain

Parameters:

eventDispatcher - the EventDispatcher to append to the chain

Returns:

the chain with the appended event dispatcher

prepend

public EventDispatchTree prepend(EventDispatcher eventDispatcher)

Description copied from interface: EventDispatchChain

Prepends the specified EventDispatcher to this chain. Returns a reference to the chain with the prepended element.

The caller shouldn't assume that this EventDispatchChain remains unchanged nor that the returned value will reference a different chain after the call. All this depends on the EventDispatchChain implementation.

So the call should be always done in the following form: chain = chain.prepend(eventDispatcher);

Specified by:

prepend in interface EventDispatchTree

Specified by:

prepend in interface EventDispatchChain

Parameters:

eventDispatcher - the EventDispatcher to prepend to the chain

Returns:

the chain with the prepended event dispatcher

dispatchEvent

public Event dispatchEvent(Event event)

Description copied from interface: EventDispatchChain

Dispatches the specified event through this EventDispatchChain. The return value represents the event after processing done by the chain. If further processing is to be done after the call the event referenced by the return value should be used instead of the original event. In the case the event is fully handled / consumed in the chain the returned value is null and no further processing should be done with that event.

Specified by:

dispatchEvent in interface EventDispatchChain

Parameters:

event - the event to dispatch

Returns:

the processed event or null if the event had been fully handled / consumed

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

ensureCapacity

private void ensureCapacity(int size)

expandTail

private void expandTail(int levelIndex)

mergeTreeLevel

private void mergeTreeLevel(EventDispatchTreeImpl srcTree,
                            int dstLevelIndex,
                            int srcLevelIndex)

copyTreeLevel

private int copyTreeLevel(EventDispatchTreeImpl srcTree,
                          int srcLevelIndex)

copySubtree

private int copySubtree(EventDispatchTreeImpl srcTree,
                        int srcIndex)

appendTreeLevel

private void appendTreeLevel(java.lang.StringBuilder sb,
                             int levelIndex)

appendSubtree

private void appendSubtree(java.lang.StringBuilder sb,
                           int index)

getChildIndex

private static int getChildIndex(EventDispatchTreeImpl tree,
                                 int index)