| /* |
| * Copyright (C) 2009 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 |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * 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 "bindings/core/v8/ScriptEventListener.h" |
| |
| #include "bindings/core/v8/ScriptController.h" |
| #include "bindings/core/v8/ScriptState.h" |
| #include "bindings/core/v8/V8AbstractEventListener.h" |
| #include "bindings/core/v8/V8Binding.h" |
| #include "bindings/core/v8/WindowProxy.h" |
| #include "core/dom/Document.h" |
| #include "core/dom/DocumentParser.h" |
| #include "core/dom/QualifiedName.h" |
| #include "core/events/EventListener.h" |
| #include "core/frame/LocalFrame.h" |
| #include <v8.h> |
| |
| namespace blink { |
| |
| PassRefPtr<V8LazyEventListener> createAttributeEventListener(Node* node, const QualifiedName& name, const AtomicString& value, const AtomicString& eventParameterName) |
| { |
| ASSERT(node); |
| if (value.isNull()) |
| return nullptr; |
| |
| // FIXME: Very strange: we initialize zero-based number with '1'. |
| 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, value, sourceURL, position, node, isolate); |
| } |
| |
| PassRefPtr<V8LazyEventListener> createAttributeEventListener(LocalFrame* frame, const QualifiedName& name, const AtomicString& value, const AtomicString& eventParameterName) |
| { |
| 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, 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()) { |
| // Try the "handleEvent" method (EventListener interface). |
| v8::Handle<v8::Value> property = listenerObject->Get(v8AtomicString(isolate, "handleEvent")); |
| if (property.IsEmpty() || !property->IsFunction()) { |
| // Fall back to the "constructor" property. |
| 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 ""; |
| |
| TOSTRING_DEFAULT(V8StringResource<TreatNullAsNullString>, 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(ScriptState::from(context), function); |
| } |
| |
| 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().windowProxy(v8Listener->world())->context(); |
| return ScriptState::from(v8Context); |
| } |
| |
| bool eventListenerHandlerLocation(Document* document, EventListener* listener, String& sourceName, String& scriptId, int& lineNumber, int& columnNumber) |
| { |
| 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(); |
| columnNumber = originalFunction->GetScriptColumnNumber(); |
| return true; |
| } |
| |
| } // namespace blink |