下面列出了怎么用org.w3c.dom.events.EventListener的API类实例代码及写法，或者点击链接到github查看源代码。
protected void clickLink() {
EventListener listener = new EventListener() {
public void handleEvent(Event ev) {
// ev.;
}
};
Document doc = webEngine.getDocument();
Element el = doc.getElementById("exit-app");
((EventTarget) el).addEventListener("click", listener, false);
NodeList links = doc.getElementsByTagName("a");
for (int i = 0; i < links.getLength(); ++i) {
// Node node = links.item(i);
// String link = links.item(i).toString();
//
// EventListener listener = new EventListener() {
// public void handleEvent(Event ev) {
//// ev.;
// }
// };
}
}
public XmlLocationAnnotator(XMLReader xmlReader, Document dom) {
super(xmlReader);
// Add listener to DOM, so we know which node was added.
EventListener modListener = new EventListener() {
@Override
public void handleEvent(Event e) {
EventTarget target = ((MutationEvent) e).getTarget();
elementStack.push((Element) target);
}
};
((EventTarget) dom).addEventListener("DOMNodeInserted", modListener, true);
}
public XmlLocationAnnotator(XMLReader xmlReader, Document dom) {
super(xmlReader);
// Add listener to DOM, so we know which node was added.
EventListener modListener = new EventListener() {
@Override
public void handleEvent(Event e) {
EventTarget target = ((MutationEvent) e).getTarget();
elementStack.push((Element) target);
}
};
((EventTarget) dom).addEventListener("DOMNodeInserted", modListener, true);
}
public XmlLocationAnnotator(XMLReader xmlReader, Document dom) {
super(xmlReader);
// Add listener to DOM, so we know which node was added.
EventListener modListener = new EventListener() {
@Override
public void handleEvent(Event e) {
EventTarget target = ((MutationEvent) e).getTarget();
elementStack.push((Element) target);
}
};
((EventTarget) dom).addEventListener("DOMNodeInserted", modListener, true);
}
public XmlLocationAnnotator(XMLReader xmlReader, Document dom) {
super(xmlReader);
// Add listener to DOM, so we know which node was added.
EventListener modListener = new EventListener() {
@Override
public void handleEvent(Event e) {
EventTarget target = ((MutationEvent) e).getTarget();
elementStack.push((Element) target);
}
};
((EventTarget) dom).addEventListener("DOMNodeInserted", modListener, true);
}
/** NON-DOM INTERNAL: Constructor for Listener list Entry
* @param type Event name (NOT event group!) to listen for.
* @param listener Who gets called when event is dispatched
* @param useCaptue True iff listener is registered on
* capturing phase rather than at-target or bubbling
*/
LEntry(String type, EventListener listener, boolean useCapture)
{
this.type = type;
this.listener = listener;
this.useCapture = useCapture;
}
/**
* Introduced in DOM Level 2. <p> Register an event listener with this
* Node. A listener may be independently registered as both Capturing and
* Bubbling, but may only be registered once per role; redundant
* registrations are ignored.
* @param node node to add listener to
* @param type Event name (NOT event group!) to listen for.
* @param listener Who gets called when event is dispatched
* @param useCapture True iff listener is registered on
* capturing phase rather than at-target or bubbling
*/
@Override
protected void addEventListener(NodeImpl node, String type,
EventListener listener, boolean useCapture)
{
// We can't dispatch to blank type-name, and of course we need
// a listener to dispatch to
if (type == null || type.equals("") || listener == null)
return;
// Each listener may be registered only once per type per phase.
// Simplest way to code that is to zap the previous entry, if any.
removeEventListener(node, type, listener, useCapture);
List<LEntry> nodeListeners = getEventListeners(node);
if(nodeListeners == null) {
nodeListeners = new ArrayList<>();
setEventListeners(node, nodeListeners);
}
nodeListeners.add(new LEntry(type, listener, useCapture));
// Record active listener
LCount lc = LCount.lookup(type);
if (useCapture) {
++lc.captures;
++lc.total;
}
else {
++lc.bubbles;
++lc.total;
}
}
/**
* Introduced in DOM Level 2. <p> Deregister an event listener previously
* registered with this Node. A listener must be independently removed
* from the Capturing and Bubbling roles. Redundant removals (of listeners
* not currently registered for this role) are ignored.
* @param node node to remove listener from
* @param type Event name (NOT event group!) to listen for.
* @param listener Who gets called when event is dispatched
* @param useCapture True iff listener is registered on
* capturing phase rather than at-target or bubbling
*/
@Override
protected void removeEventListener(NodeImpl node, String type,
EventListener listener,
boolean useCapture)
{
// If this couldn't be a valid listener registration, ignore request
if (type == null || type.equals("") || listener == null)
return;
List<LEntry> nodeListeners = getEventListeners(node);
if (nodeListeners == null)
return;
// Note that addListener has previously ensured that
// each listener may be registered only once per type per phase.
// count-down is OK for deletions!
for (int i = nodeListeners.size() - 1; i >= 0; --i) {
LEntry le = nodeListeners.get(i);
if (le.useCapture == useCapture && le.listener == listener &&
le.type.equals(type)) {
nodeListeners.remove(i);
// Storage management: Discard empty listener lists
if (nodeListeners.isEmpty())
setEventListeners(node, null);
// Remove active listener
LCount lc = LCount.lookup(type);
if (useCapture) {
--lc.captures;
--lc.total;
}
else {
--lc.bubbles;
--lc.total;
}
break; // Found it; no need to loop farther.
}
}
}
/** NON-DOM INTERNAL: Constructor for Listener list Entry
* @param type Event name (NOT event group!) to listen for.
* @param listener Who gets called when event is dispatched
* @param useCaptue True iff listener is registered on
* capturing phase rather than at-target or bubbling
*/
LEntry(String type, EventListener listener, boolean useCapture)
{
this.type = type;
this.listener = listener;
this.useCapture = useCapture;
}
/**
* Introduced in DOM Level 2. <p> Register an event listener with this
* Node. A listener may be independently registered as both Capturing and
* Bubbling, but may only be registered once per role; redundant
* registrations are ignored.
* @param node node to add listener to
* @param type Event name (NOT event group!) to listen for.
* @param listener Who gets called when event is dispatched
* @param useCapture True iff listener is registered on
* capturing phase rather than at-target or bubbling
*/
@Override
protected void addEventListener(NodeImpl node, String type,
EventListener listener, boolean useCapture)
{
// We can't dispatch to blank type-name, and of course we need
// a listener to dispatch to
if (type == null || type.equals("") || listener == null)
return;
// Each listener may be registered only once per type per phase.
// Simplest way to code that is to zap the previous entry, if any.
removeEventListener(node, type, listener, useCapture);
List<LEntry> nodeListeners = getEventListeners(node);
if(nodeListeners == null) {
nodeListeners = new ArrayList<>();
setEventListeners(node, nodeListeners);
}
nodeListeners.add(new LEntry(type, listener, useCapture));
// Record active listener
LCount lc = LCount.lookup(type);
if (useCapture) {
++lc.captures;
++lc.total;
}
else {
++lc.bubbles;
++lc.total;
}
}
/**
* Introduced in DOM Level 2. <p> Deregister an event listener previously
* registered with this Node. A listener must be independently removed
* from the Capturing and Bubbling roles. Redundant removals (of listeners
* not currently registered for this role) are ignored.
* @param node node to remove listener from
* @param type Event name (NOT event group!) to listen for.
* @param listener Who gets called when event is dispatched
* @param useCapture True iff listener is registered on
* capturing phase rather than at-target or bubbling
*/
@Override
protected void removeEventListener(NodeImpl node, String type,
EventListener listener,
boolean useCapture)
{
// If this couldn't be a valid listener registration, ignore request
if (type == null || type.equals("") || listener == null)
return;
List<LEntry> nodeListeners = getEventListeners(node);
if (nodeListeners == null)
return;
// Note that addListener has previously ensured that
// each listener may be registered only once per type per phase.
// count-down is OK for deletions!
for (int i = nodeListeners.size() - 1; i >= 0; --i) {
LEntry le = nodeListeners.get(i);
if (le.useCapture == useCapture && le.listener == listener &&
le.type.equals(type)) {
nodeListeners.remove(i);
// Storage management: Discard empty listener lists
if (nodeListeners.isEmpty())
setEventListeners(node, null);
// Remove active listener
LCount lc = LCount.lookup(type);
if (useCapture) {
--lc.captures;
--lc.total;
}
else {
--lc.bubbles;
--lc.total;
}
break; // Found it; no need to loop farther.
}
}
}
/** NON-DOM INTERNAL: Constructor for Listener list Entry
* @param type Event name (NOT event group!) to listen for.
* @param listener Who gets called when event is dispatched
* @param useCaptue True iff listener is registered on
* capturing phase rather than at-target or bubbling
*/
LEntry(String type, EventListener listener, boolean useCapture)
{
this.type = type;
this.listener = listener;
this.useCapture = useCapture;
}
/**
* Introduced in DOM Level 2. <p> Deregister an event listener previously
* registered with this Node. A listener must be independently removed
* from the Capturing and Bubbling roles. Redundant removals (of listeners
* not currently registered for this role) are ignored.
* @param node node to remove listener from
* @param type Event name (NOT event group!) to listen for.
* @param listener Who gets called when event is dispatched
* @param useCapture True iff listener is registered on
* capturing phase rather than at-target or bubbling
*/
protected void removeEventListener(NodeImpl node, String type,
EventListener listener,
boolean useCapture)
{
// If this couldn't be a valid listener registration, ignore request
if (type == null || type.equals("") || listener == null)
return;
Vector nodeListeners = getEventListeners(node);
if (nodeListeners == null)
return;
// Note that addListener has previously ensured that
// each listener may be registered only once per type per phase.
// count-down is OK for deletions!
for (int i = nodeListeners.size() - 1; i >= 0; --i) {
LEntry le = (LEntry) nodeListeners.elementAt(i);
if (le.useCapture == useCapture && le.listener == listener &&
le.type.equals(type)) {
nodeListeners.removeElementAt(i);
// Storage management: Discard empty listener lists
if (nodeListeners.size() == 0)
setEventListeners(node, null);
// Remove active listener
LCount lc = LCount.lookup(type);
if (useCapture) {
--lc.captures;
--lc.total;
}
else {
--lc.bubbles;
--lc.total;
}
break; // Found it; no need to loop farther.
}
}
}
/** NON-DOM INTERNAL: Constructor for Listener list Entry
* @param type Event name (NOT event group!) to listen for.
* @param listener Who gets called when event is dispatched
* @param useCaptue True iff listener is registered on
* capturing phase rather than at-target or bubbling
*/
LEntry(String type, EventListener listener, boolean useCapture)
{
this.type = type;
this.listener = listener;
this.useCapture = useCapture;
}
/**
* Introduced in DOM Level 2. <p> Register an event listener with this
* Node. A listener may be independently registered as both Capturing and
* Bubbling, but may only be registered once per role; redundant
* registrations are ignored.
* @param node node to add listener to
* @param type Event name (NOT event group!) to listen for.
* @param listener Who gets called when event is dispatched
* @param useCapture True iff listener is registered on
* capturing phase rather than at-target or bubbling
*/
@Override
protected void addEventListener(NodeImpl node, String type,
EventListener listener, boolean useCapture)
{
// We can't dispatch to blank type-name, and of course we need
// a listener to dispatch to
if (type == null || type.equals("") || listener == null)
return;
// Each listener may be registered only once per type per phase.
// Simplest way to code that is to zap the previous entry, if any.
removeEventListener(node, type, listener, useCapture);
List<LEntry> nodeListeners = getEventListeners(node);
if(nodeListeners == null) {
nodeListeners = new ArrayList<>();
setEventListeners(node, nodeListeners);
}
nodeListeners.add(new LEntry(type, listener, useCapture));
// Record active listener
LCount lc = LCount.lookup(type);
if (useCapture) {
++lc.captures;
++lc.total;
}
else {
++lc.bubbles;
++lc.total;
}
}
/**
* Introduced in DOM Level 2. <p> Deregister an event listener previously
* registered with this Node. A listener must be independently removed
* from the Capturing and Bubbling roles. Redundant removals (of listeners
* not currently registered for this role) are ignored.
* @param node node to remove listener from
* @param type Event name (NOT event group!) to listen for.
* @param listener Who gets called when event is dispatched
* @param useCapture True iff listener is registered on
* capturing phase rather than at-target or bubbling
*/
@Override
protected void removeEventListener(NodeImpl node, String type,
EventListener listener,
boolean useCapture)
{
// If this couldn't be a valid listener registration, ignore request
if (type == null || type.equals("") || listener == null)
return;
List<LEntry> nodeListeners = getEventListeners(node);
if (nodeListeners == null)
return;
// Note that addListener has previously ensured that
// each listener may be registered only once per type per phase.
// count-down is OK for deletions!
for (int i = nodeListeners.size() - 1; i >= 0; --i) {
LEntry le = nodeListeners.get(i);
if (le.useCapture == useCapture && le.listener == listener &&
le.type.equals(type)) {
nodeListeners.remove(i);
// Storage management: Discard empty listener lists
if (nodeListeners.isEmpty())
setEventListeners(node, null);
// Remove active listener
LCount lc = LCount.lookup(type);
if (useCapture) {
--lc.captures;
--lc.total;
}
else {
--lc.bubbles;
--lc.total;
}
break; // Found it; no need to loop farther.
}
}
}
/** NON-DOM INTERNAL: Constructor for Listener list Entry
* @param type Event name (NOT event group!) to listen for.
* @param listener Who gets called when event is dispatched
* @param useCaptue True iff listener is registered on
* capturing phase rather than at-target or bubbling
*/
LEntry(String type, EventListener listener, boolean useCapture)
{
this.type = type;
this.listener = listener;
this.useCapture = useCapture;
}
/**
* Introduced in DOM Level 2. <p> Register an event listener with this
* Node. A listener may be independently registered as both Capturing and
* Bubbling, but may only be registered once per role; redundant
* registrations are ignored.
* @param node node to add listener to
* @param type Event name (NOT event group!) to listen for.
* @param listener Who gets called when event is dispatched
* @param useCapture True iff listener is registered on
* capturing phase rather than at-target or bubbling
*/
@Override
protected void addEventListener(NodeImpl node, String type,
EventListener listener, boolean useCapture)
{
// We can't dispatch to blank type-name, and of course we need
// a listener to dispatch to
if (type == null || type.equals("") || listener == null)
return;
// Each listener may be registered only once per type per phase.
// Simplest way to code that is to zap the previous entry, if any.
removeEventListener(node, type, listener, useCapture);
List<LEntry> nodeListeners = getEventListeners(node);
if(nodeListeners == null) {
nodeListeners = new ArrayList<>();
setEventListeners(node, nodeListeners);
}
nodeListeners.add(new LEntry(type, listener, useCapture));
// Record active listener
LCount lc = LCount.lookup(type);
if (useCapture) {
++lc.captures;
++lc.total;
}
else {
++lc.bubbles;
++lc.total;
}
}
/**
* Introduced in DOM Level 2. <p> Deregister an event listener previously
* registered with this Node. A listener must be independently removed
* from the Capturing and Bubbling roles. Redundant removals (of listeners
* not currently registered for this role) are ignored.
* @param node node to remove listener from
* @param type Event name (NOT event group!) to listen for.
* @param listener Who gets called when event is dispatched
* @param useCapture True iff listener is registered on
* capturing phase rather than at-target or bubbling
*/
@Override
protected void removeEventListener(NodeImpl node, String type,
EventListener listener,
boolean useCapture)
{
// If this couldn't be a valid listener registration, ignore request
if (type == null || type.equals("") || listener == null)
return;
List<LEntry> nodeListeners = getEventListeners(node);
if (nodeListeners == null)
return;
// Note that addListener has previously ensured that
// each listener may be registered only once per type per phase.
// count-down is OK for deletions!
for (int i = nodeListeners.size() - 1; i >= 0; --i) {
LEntry le = nodeListeners.get(i);
if (le.useCapture == useCapture && le.listener == listener &&
le.type.equals(type)) {
nodeListeners.remove(i);
// Storage management: Discard empty listener lists
if (nodeListeners.isEmpty())
setEventListeners(node, null);
// Remove active listener
LCount lc = LCount.lookup(type);
if (useCapture) {
--lc.captures;
--lc.total;
}
else {
--lc.bubbles;
--lc.total;
}
break; // Found it; no need to loop farther.
}
}
}
/** NON-DOM INTERNAL: Constructor for Listener list Entry
* @param type Event name (NOT event group!) to listen for.
* @param listener Who gets called when event is dispatched
* @param useCaptue True iff listener is registered on
* capturing phase rather than at-target or bubbling
*/
LEntry(String type, EventListener listener, boolean useCapture)
{
this.type = type;
this.listener = listener;
this.useCapture = useCapture;
}
/**
* Introduced in DOM Level 2. <p> Register an event listener with this
* Node. A listener may be independently registered as both Capturing and
* Bubbling, but may only be registered once per role; redundant
* registrations are ignored.
* @param node node to add listener to
* @param type Event name (NOT event group!) to listen for.
* @param listener Who gets called when event is dispatched
* @param useCapture True iff listener is registered on
* capturing phase rather than at-target or bubbling
*/
@Override
protected void addEventListener(NodeImpl node, String type,
EventListener listener, boolean useCapture)
{
// We can't dispatch to blank type-name, and of course we need
// a listener to dispatch to
if (type == null || type.equals("") || listener == null)
return;
// Each listener may be registered only once per type per phase.
// Simplest way to code that is to zap the previous entry, if any.
removeEventListener(node, type, listener, useCapture);
List<LEntry> nodeListeners = getEventListeners(node);
if(nodeListeners == null) {
nodeListeners = new ArrayList<>();
setEventListeners(node, nodeListeners);
}
nodeListeners.add(new LEntry(type, listener, useCapture));
// Record active listener
LCount lc = LCount.lookup(type);
if (useCapture) {
++lc.captures;
++lc.total;
}
else {
++lc.bubbles;
++lc.total;
}
}
/**
* Introduced in DOM Level 2. <p> Deregister an event listener previously
* registered with this Node. A listener must be independently removed
* from the Capturing and Bubbling roles. Redundant removals (of listeners
* not currently registered for this role) are ignored.
* @param node node to remove listener from
* @param type Event name (NOT event group!) to listen for.
* @param listener Who gets called when event is dispatched
* @param useCapture True iff listener is registered on
* capturing phase rather than at-target or bubbling
*/
@Override
protected void removeEventListener(NodeImpl node, String type,
EventListener listener,
boolean useCapture)
{
// If this couldn't be a valid listener registration, ignore request
if (type == null || type.equals("") || listener == null)
return;
List<LEntry> nodeListeners = getEventListeners(node);
if (nodeListeners == null)
return;
// Note that addListener has previously ensured that
// each listener may be registered only once per type per phase.
// count-down is OK for deletions!
for (int i = nodeListeners.size() - 1; i >= 0; --i) {
LEntry le = nodeListeners.get(i);
if (le.useCapture == useCapture && le.listener == listener &&
le.type.equals(type)) {
nodeListeners.remove(i);
// Storage management: Discard empty listener lists
if (nodeListeners.isEmpty())
setEventListeners(node, null);
// Remove active listener
LCount lc = LCount.lookup(type);
if (useCapture) {
--lc.captures;
--lc.total;
}
else {
--lc.bubbles;
--lc.total;
}
break; // Found it; no need to loop farther.
}
}
}
/** NON-DOM INTERNAL: Constructor for Listener list Entry
* @param type Event name (NOT event group!) to listen for.
* @param listener Who gets called when event is dispatched
* @param useCaptue True iff listener is registered on
* capturing phase rather than at-target or bubbling
*/
LEntry(String type, EventListener listener, boolean useCapture)
{
this.type = type;
this.listener = listener;
this.useCapture = useCapture;
}
/**
* Introduced in DOM Level 2. <p> Register an event listener with this
* Node. A listener may be independently registered as both Capturing and
* Bubbling, but may only be registered once per role; redundant
* registrations are ignored.
* @param node node to add listener to
* @param type Event name (NOT event group!) to listen for.
* @param listener Who gets called when event is dispatched
* @param useCapture True iff listener is registered on
* capturing phase rather than at-target or bubbling
*/
@Override
protected void addEventListener(NodeImpl node, String type,
EventListener listener, boolean useCapture)
{
// We can't dispatch to blank type-name, and of course we need
// a listener to dispatch to
if (type == null || type.equals("") || listener == null)
return;
// Each listener may be registered only once per type per phase.
// Simplest way to code that is to zap the previous entry, if any.
removeEventListener(node, type, listener, useCapture);
List<LEntry> nodeListeners = getEventListeners(node);
if(nodeListeners == null) {
nodeListeners = new ArrayList<>();
setEventListeners(node, nodeListeners);
}
nodeListeners.add(new LEntry(type, listener, useCapture));
// Record active listener
LCount lc = LCount.lookup(type);
if (useCapture) {
++lc.captures;
++lc.total;
}
else {
++lc.bubbles;
++lc.total;
}
}
/**
* Introduced in DOM Level 2. <p> Deregister an event listener previously
* registered with this Node. A listener must be independently removed
* from the Capturing and Bubbling roles. Redundant removals (of listeners
* not currently registered for this role) are ignored.
* @param node node to remove listener from
* @param type Event name (NOT event group!) to listen for.
* @param listener Who gets called when event is dispatched
* @param useCapture True iff listener is registered on
* capturing phase rather than at-target or bubbling
*/
@Override
protected void removeEventListener(NodeImpl node, String type,
EventListener listener,
boolean useCapture)
{
// If this couldn't be a valid listener registration, ignore request
if (type == null || type.equals("") || listener == null)
return;
List<LEntry> nodeListeners = getEventListeners(node);
if (nodeListeners == null)
return;
// Note that addListener has previously ensured that
// each listener may be registered only once per type per phase.
// count-down is OK for deletions!
for (int i = nodeListeners.size() - 1; i >= 0; --i) {
LEntry le = nodeListeners.get(i);
if (le.useCapture == useCapture && le.listener == listener &&
le.type.equals(type)) {
nodeListeners.remove(i);
// Storage management: Discard empty listener lists
if (nodeListeners.isEmpty())
setEventListeners(node, null);
// Remove active listener
LCount lc = LCount.lookup(type);
if (useCapture) {
--lc.captures;
--lc.total;
}
else {
--lc.bubbles;
--lc.total;
}
break; // Found it; no need to loop farther.
}
}
}
/** NON-DOM INTERNAL: Constructor for Listener list Entry
* @param type Event name (NOT event group!) to listen for.
* @param listener Who gets called when event is dispatched
* @param useCaptue True iff listener is registered on
* capturing phase rather than at-target or bubbling
*/
LEntry(String type, EventListener listener, boolean useCapture)
{
this.type = type;
this.listener = listener;
this.useCapture = useCapture;
}
/**
* Introduced in DOM Level 2. <p> Register an event listener with this
* Node. A listener may be independently registered as both Capturing and
* Bubbling, but may only be registered once per role; redundant
* registrations are ignored.
* @param node node to add listener to
* @param type Event name (NOT event group!) to listen for.
* @param listener Who gets called when event is dispatched
* @param useCapture True iff listener is registered on
* capturing phase rather than at-target or bubbling
*/
@Override
protected void addEventListener(NodeImpl node, String type,
EventListener listener, boolean useCapture)
{
// We can't dispatch to blank type-name, and of course we need
// a listener to dispatch to
if (type == null || type.equals("") || listener == null)
return;
// Each listener may be registered only once per type per phase.
// Simplest way to code that is to zap the previous entry, if any.
removeEventListener(node, type, listener, useCapture);
List<LEntry> nodeListeners = getEventListeners(node);
if(nodeListeners == null) {
nodeListeners = new ArrayList<>();
setEventListeners(node, nodeListeners);
}
nodeListeners.add(new LEntry(type, listener, useCapture));
// Record active listener
LCount lc = LCount.lookup(type);
if (useCapture) {
++lc.captures;
++lc.total;
}
else {
++lc.bubbles;
++lc.total;
}
}
/**
* Introduced in DOM Level 2. <p> Deregister an event listener previously
* registered with this Node. A listener must be independently removed
* from the Capturing and Bubbling roles. Redundant removals (of listeners
* not currently registered for this role) are ignored.
* @param node node to remove listener from
* @param type Event name (NOT event group!) to listen for.
* @param listener Who gets called when event is dispatched
* @param useCapture True iff listener is registered on
* capturing phase rather than at-target or bubbling
*/
@Override
protected void removeEventListener(NodeImpl node, String type,
EventListener listener,
boolean useCapture)
{
// If this couldn't be a valid listener registration, ignore request
if (type == null || type.equals("") || listener == null)
return;
List<LEntry> nodeListeners = getEventListeners(node);
if (nodeListeners == null)
return;
// Note that addListener has previously ensured that
// each listener may be registered only once per type per phase.
// count-down is OK for deletions!
for (int i = nodeListeners.size() - 1; i >= 0; --i) {
LEntry le = nodeListeners.get(i);
if (le.useCapture == useCapture && le.listener == listener &&
le.type.equals(type)) {
nodeListeners.remove(i);
// Storage management: Discard empty listener lists
if (nodeListeners.isEmpty())
setEventListeners(node, null);
// Remove active listener
LCount lc = LCount.lookup(type);
if (useCapture) {
--lc.captures;
--lc.total;
}
else {
--lc.bubbles;
--lc.total;
}
break; // Found it; no need to loop farther.
}
}
}
/** NON-DOM INTERNAL: Constructor for Listener list Entry
* @param type Event name (NOT event group!) to listen for.
* @param listener Who gets called when event is dispatched
* @param useCaptue True iff listener is registered on
* capturing phase rather than at-target or bubbling
*/
LEntry(String type, EventListener listener, boolean useCapture)
{
this.type = type;
this.listener = listener;
this.useCapture = useCapture;
}
/**
* Introduced in DOM Level 2. <p> Register an event listener with this
* Node. A listener may be independently registered as both Capturing and
* Bubbling, but may only be registered once per role; redundant
* registrations are ignored.
* @param node node to add listener to
* @param type Event name (NOT event group!) to listen for.
* @param listener Who gets called when event is dispatched
* @param useCapture True iff listener is registered on
* capturing phase rather than at-target or bubbling
*/
@Override
protected void addEventListener(NodeImpl node, String type,
EventListener listener, boolean useCapture)
{
// We can't dispatch to blank type-name, and of course we need
// a listener to dispatch to
if (type == null || type.equals("") || listener == null)
return;
// Each listener may be registered only once per type per phase.
// Simplest way to code that is to zap the previous entry, if any.
removeEventListener(node, type, listener, useCapture);
List<LEntry> nodeListeners = getEventListeners(node);
if(nodeListeners == null) {
nodeListeners = new ArrayList<>();
setEventListeners(node, nodeListeners);
}
nodeListeners.add(new LEntry(type, listener, useCapture));
// Record active listener
LCount lc = LCount.lookup(type);
if (useCapture) {
++lc.captures;
++lc.total;
}
else {
++lc.bubbles;
++lc.total;
}
}