[M120 Migration] Implement hasEventListeners for Web Voice Touch

In order to support more elements in Web Voice Touch,
WebBrowser request new JS API for getting event listeners
attached to html element. So implemented the JS API:
bool hasEventListeners(const String eventType)

References:
  - https://review.tizen.org/gerrit/#/c/299220/

Change-Id: I077701f36eaf12f25161fda8b513127fa177533f
Signed-off-by: jiangyuwei <yuwei.jiang@samsung.com>

diff --git a/third_party/blink/renderer/core/dom/events/event_target.cc b/third_party/blink/renderer/core/dom/events/event_target.cc
index b62911f..241e934 100644 (file)
--- a/third_party/blink/renderer/core/dom/events/event_target.cc
+++ b/third_party/blink/renderer/core/dom/events/event_target.cc
@@ -586,6 +586,10 @@ bool EventTarget::removeEventListener(const AtomicString& event_type,
   return removeEventListener(event_type, event_listener, /*use_capture=*/false);
 }
 
+bool EventTarget::hasEventListeners(const AtomicString& event_type) {
+  return HasEventListeners(event_type);
+}
+
 bool EventTarget::removeEventListener(
     const AtomicString& event_type,
     V8EventListener* listener,

diff --git a/third_party/blink/renderer/core/dom/events/event_target.h b/third_party/blink/renderer/core/dom/events/event_target.h
index 022773b..768371b 100644 (file)
--- a/third_party/blink/renderer/core/dom/events/event_target.h
+++ b/third_party/blink/renderer/core/dom/events/event_target.h
@@ -171,6 +171,7 @@ class CORE_EXPORT EventTarget : public ScriptWrappable {
                            const EventListener*,
                            EventListenerOptions*);
   virtual void RemoveAllEventListeners();
+  bool hasEventListeners(const AtomicString& event_type);
 
   DispatchEventResult DispatchEvent(Event&);
 

diff --git a/third_party/blink/renderer/core/dom/events/event_target.idl b/third_party/blink/renderer/core/dom/events/event_target.idl
index 94c0678..ef2aa40 100644 (file)
--- a/third_party/blink/renderer/core/dom/events/event_target.idl
+++ b/third_party/blink/renderer/core/dom/events/event_target.idl
@@ -26,5 +26,6 @@
     [CallWith=ScriptState] constructor();
     void addEventListener(DOMString type, EventListener? listener, optional (AddEventListenerOptions or boolean) options);
     void removeEventListener(DOMString type, EventListener? listener, optional (EventListenerOptions or boolean) options);
+    boolean hasEventListeners(DOMString type);
     [ImplementedAs=dispatchEventForBindings, RaisesException, RuntimeCallStatsCounter=EventTargetDispatchEvent] boolean dispatchEvent(Event event);
 };