This source file includes following definitions.
- eventParameterName
- createAttributeEventListener
- createAttributeEventListener
- eventListenerEffectiveFunction
- eventListenerHandlerBody
- eventListenerHandler
- eventListenerHandlerScriptState
- eventListenerHandlerLocation
#include "config.h"
#include "bindings/v8/ScriptEventListener.h"
#include "bindings/v8/ScriptController.h"
#include "bindings/v8/ScriptScope.h"
#include "bindings/v8/ScriptState.h"
#include "bindings/v8/V8AbstractEventListener.h"
#include "bindings/v8/V8Binding.h"
#include "bindings/v8/V8WindowShell.h"
#include "core/dom/Document.h"
#include "core/dom/DocumentParser.h"
#include "core/events/EventListener.h"
#include "core/frame/LocalFrame.h"
namespace WebCore {
static const AtomicString& eventParameterName(bool isSVGEvent)
{
DEFINE_STATIC_LOCAL(const AtomicString, eventString, ("event"));
DEFINE_STATIC_LOCAL(const AtomicString, evtString, ("evt"));
return isSVGEvent ? evtString : eventString;
}
PassRefPtr<V8LazyEventListener> createAttributeEventListener(Node* node, const QualifiedName& name, const AtomicString& value)
{
ASSERT(node);
if (value.isNull())
return nullptr;
TextPosition position(OrdinalNumber::fromZeroBasedInt(1), OrdinalNumber::first());
String sourceURL;
v8::Isolate* isolate;
if (LocalFrame* frame = node->document().frame()) {
isolate = toIsolate(frame);
ScriptController& scriptController = frame->script();
if (!scriptController.canExecuteScripts(AboutToExecuteScript))
return nullptr;
position = scriptController.eventHandlerPosition();
sourceURL = node->document().url().string();
} else {
isolate = v8::Isolate::GetCurrent();
}
return V8LazyEventListener::create(name.localName(), eventParameterName(node->isSVGElement()), value, sourceURL, position, node, isolate);
}
PassRefPtr<V8LazyEventListener> createAttributeEventListener(LocalFrame* frame, const QualifiedName& name, const AtomicString& value)
{
if (!frame)
return nullptr;
if (value.isNull())
return nullptr;
ScriptController& scriptController = frame->script();
if (!scriptController.canExecuteScripts(AboutToExecuteScript))
return nullptr;
TextPosition position = scriptController.eventHandlerPosition();
String sourceURL = frame->document()->url().string();
return V8LazyEventListener::create(name.localName(), eventParameterName(frame->document()->isSVGDocument()), value, sourceURL, position, 0, toIsolate(frame));
}
static v8::Handle<v8::Function> eventListenerEffectiveFunction(v8::Isolate* isolate, v8::Handle<v8::Object> listenerObject)
{
v8::Handle<v8::Function> function;
if (listenerObject->IsFunction()) {
function = v8::Handle<v8::Function>::Cast(listenerObject);
} else if (listenerObject->IsObject()) {
v8::Handle<v8::Value> property = listenerObject->Get(v8AtomicString(isolate, "handleEvent"));
if (property.IsEmpty() || !property->IsFunction()) {
property = listenerObject->Get(v8AtomicString(isolate, "constructor"));
}
if (!property.IsEmpty() && property->IsFunction())
function = v8::Handle<v8::Function>::Cast(property);
}
return function;
}
String eventListenerHandlerBody(Document* document, EventListener* listener)
{
if (listener->type() != EventListener::JSEventListenerType)
return "";
v8::HandleScope scope(toIsolate(document));
V8AbstractEventListener* v8Listener = static_cast<V8AbstractEventListener*>(listener);
v8::Handle<v8::Context> context = toV8Context(document, v8Listener->world());
v8::Context::Scope contextScope(context);
v8::Handle<v8::Object> object = v8Listener->getListenerObject(document);
if (object.IsEmpty())
return "";
v8::Handle<v8::Function> function = eventListenerEffectiveFunction(scope.GetIsolate(), object);
if (function.IsEmpty())
return "";
V8TRYCATCH_FOR_V8STRINGRESOURCE_RETURN(V8StringResource<WithNullCheck>, functionString, function, "");
return functionString;
}
ScriptValue eventListenerHandler(Document* document, EventListener* listener)
{
if (listener->type() != EventListener::JSEventListenerType)
return ScriptValue();
v8::Isolate* isolate = toIsolate(document);
v8::HandleScope scope(isolate);
V8AbstractEventListener* v8Listener = static_cast<V8AbstractEventListener*>(listener);
v8::Handle<v8::Context> context = toV8Context(document, v8Listener->world());
v8::Context::Scope contextScope(context);
v8::Handle<v8::Object> function = v8Listener->getListenerObject(document);
if (function.IsEmpty())
return ScriptValue();
return ScriptValue(function, isolate);
}
ScriptState* eventListenerHandlerScriptState(LocalFrame* frame, EventListener* listener)
{
if (listener->type() != EventListener::JSEventListenerType)
return 0;
V8AbstractEventListener* v8Listener = static_cast<V8AbstractEventListener*>(listener);
v8::HandleScope scope(toIsolate(frame));
v8::Handle<v8::Context> v8Context = frame->script().windowShell(v8Listener->world())->context();
return ScriptState::forContext(v8Context);
}
bool eventListenerHandlerLocation(Document* document, EventListener* listener, String& sourceName, String& scriptId, int& lineNumber)
{
if (listener->type() != EventListener::JSEventListenerType)
return false;
v8::HandleScope scope(toIsolate(document));
V8AbstractEventListener* v8Listener = static_cast<V8AbstractEventListener*>(listener);
v8::Handle<v8::Context> context = toV8Context(document, v8Listener->world());
v8::Context::Scope contextScope(context);
v8::Local<v8::Object> object = v8Listener->getListenerObject(document);
if (object.IsEmpty())
return false;
v8::Handle<v8::Function> function = eventListenerEffectiveFunction(scope.GetIsolate(), object);
if (function.IsEmpty())
return false;
v8::Handle<v8::Function> originalFunction = getBoundFunction(function);
int scriptIdValue = originalFunction->ScriptId();
scriptId = String::number(scriptIdValue);
v8::ScriptOrigin origin = originalFunction->GetScriptOrigin();
if (!origin.ResourceName().IsEmpty() && origin.ResourceName()->IsString())
sourceName = toCoreString(origin.ResourceName().As<v8::String>());
else
sourceName = "";
lineNumber = originalFunction->GetScriptLineNumber();
return true;
}
}