DevTools: Make getEventListeners() of Console API work for window.

Source/bindings/v8/custom/V8InjectedScriptHostCustom.cpp

 /*
  * Copyright (C) 2007-2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 14 matching lines @@
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "V8InjectedScriptHost.h"
 
 #include "V8Database.h"
+#include "V8EventTarget.h"
 #include "V8HTMLAllCollection.h"
 #include "V8HTMLCollection.h"
 #include "V8Node.h"
 #include "V8NodeList.h"
 #include "V8Storage.h"
+#include "V8Window.h"
 #include "bindings/v8/BindingSecurity.h"
 #include "bindings/v8/ExceptionState.h"
 #include "bindings/v8/ScriptDebugServer.h"
 #include "bindings/v8/ScriptValue.h"
 #include "bindings/v8/V8AbstractEventListener.h"
 #include "bindings/v8/V8Binding.h"
+#include "bindings/v8/V8DOMWrapper.h"
 #include "bindings/v8/V8HiddenPropertyName.h"
 #include "bindings/v8/V8ScriptRunner.h"
 #include "bindings/v8/custom/V8Float32ArrayCustom.h"
 #include "bindings/v8/custom/V8Float64ArrayCustom.h"
 #include "bindings/v8/custom/V8Int16ArrayCustom.h"
 #include "bindings/v8/custom/V8Int32ArrayCustom.h"
 #include "bindings/v8/custom/V8Int8ArrayCustom.h"
 #include "bindings/v8/custom/V8Uint16ArrayCustom.h"
 #include "bindings/v8/custom/V8Uint32ArrayCustom.h"
 #include "bindings/v8/custom/V8Uint8ArrayCustom.h"
@@ skipping 178 matching lines @@
     if (info.Length() < 1)
         return;
 
     v8::Handle<v8::Object> object = v8::Handle<v8::Object>::Cast(info[0]);
 
     InjectedScriptHost* host = V8InjectedScriptHost::toNative(info.Holder());
     ScriptDebugServer& debugServer = host->scriptDebugServer();
     v8SetReturnValue(info, debugServer.getInternalProperties(object));
 }
 
-static v8::Handle<v8::Array> getJSListenerFunctions(Document* document, const EventListenerInfo& listenerInfo, v8::Isolate* isolate)
+static v8::Handle<v8::Array> getJSListenerFunctions(ExecutionContext* executionContext, const EventListenerInfo& listenerInfo, v8::Isolate* isolate)
 {
     v8::Local<v8::Array> result = v8::Array::New(isolate);
     size_t handlersCount = listenerInfo.eventListenerVector.size();
     for (size_t i = 0, outputIndex = 0; i < handlersCount; ++i) {
         RefPtr<EventListener> listener = listenerInfo.eventListenerVector[i].listener;
         if (listener->type() != EventListener::JSEventListenerType) {
             ASSERT_NOT_REACHED();
             continue;
         }
         V8AbstractEventListener* v8Listener = static_cast<V8AbstractEventListener*>(listener.get());
-        v8::Local<v8::Context> context = toV8Context(document, v8Listener->world());
+        v8::Local<v8::Context> context = toV8Context(executionContext, v8Listener->world());
         // Hide listeners from other contexts.
         if (context != isolate->GetCurrentContext())
             continue;
         v8::Local<v8::Object> function;
         {
             // getListenerObject() may cause JS in the event attribute to get compiled, potentially unsuccessfully.
             v8::TryCatch block;
-            function = v8Listener->getListenerObject(document);
+            function = v8Listener->getListenerObject(executionContext);
             if (block.HasCaught())
                 continue;
         }
         ASSERT(!function.IsEmpty());
         v8::Local<v8::Object> listenerEntry = v8::Object::New(isolate);
         listenerEntry->Set(v8AtomicString(isolate, "listener"), function);
         listenerEntry->Set(v8AtomicString(isolate, "useCapture"), v8::Boolean::New(isolate, listenerInfo.eventListenerVector[i].useCapture));
         result->Set(v8::Number::New(isolate, outputIndex++), listenerEntry);
     }
     return result;
 }
 
 void V8InjectedScriptHost::getEventListenersMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     if (info.Length() < 1)
         return;
 
+    EventTarget* target = 0;
     v8::Local<v8::Value> value = info[0];
-    if (!V8Node::hasInstance(value, info.GetIsolate(), worldType(info.GetIsolate())))
-        return;
-    Node* node = V8Node::toNative(value->ToObject());
-    if (!node)
+
+    if (V8EventTarget::hasInstance(value, info.GetIsolate(), worldType(info.GetIsolate())))
+        target = V8EventTarget::toNative(value->ToObject());
+
+    // We need to handle a DOMWindow specially, because a DOMWindow wrapper exists on a prototype chain.
+    if (!target && value->IsObject()) {
+        v8::Handle<v8::Object> wrapper = v8::Handle<v8::Object>::Cast(value);
+        v8::Handle<v8::Object> window = wrapper->FindInstanceInPrototypeChain(V8Window::domTemplate(info.GetIsolate(), worldTypeInMainThread(info.GetIsolate())));

[yurys, 2014/01/23 15:45:49]

What if it is called on Worker thread? If it's supposed to be called on the main
thread only we should add an ASSERT here.

[aandrey, 2014/01/24 05:55:29]

Done.

+        if (!window.IsEmpty())
+            target = toWrapperTypeInfo(window)->toEventTarget(window);
+    }
+
+    if (!target && V8DOMWrapper::isDOMWrapper(value)) {
+        v8::Handle<v8::Object> wrapper = v8::Handle<v8::Object>::Cast(value);
+        target = toWrapperTypeInfo(wrapper)->toEventTarget(wrapper);
+    }
+
+    if (!target || !target->executionContext())
         return;
 
     InjectedScriptHost* host = V8InjectedScriptHost::toNative(info.Holder());
     Vector<EventListenerInfo> listenersArray;
-    host->getEventListenersImpl(node, listenersArray);
+    host->getEventListenersImpl(target, listenersArray);
 
     v8::Local<v8::Object> result = v8::Object::New(info.GetIsolate());
     for (size_t i = 0; i < listenersArray.size(); ++i) {
-        v8::Handle<v8::Array> listeners = getJSListenerFunctions(&node->document(), listenersArray[i], info.GetIsolate());
+        v8::Handle<v8::Array> listeners = getJSListenerFunctions(target->executionContext(), listenersArray[i], info.GetIsolate());
         if (!listeners->Length())
             continue;
         AtomicString eventType = listenersArray[i].eventType;
         result->Set(v8String(info.GetIsolate(), eventType), listeners);
     }
 
     v8SetReturnValue(info, result);
 }
 
 void V8InjectedScriptHost::inspectMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
@@ skipping 134 matching lines @@
     int lineNumber;
     int columnNumber;
     if (!getFunctionLocation(info, &scriptId, &lineNumber, &columnNumber))
         return;
 
     InjectedScriptHost* host = V8InjectedScriptHost::toNative(info.Holder());
     host->unmonitorFunction(scriptId, lineNumber, columnNumber);
 }
 
 } // namespace WebCore