| /* |
| * 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 "third_party/blink/renderer/bindings/core/v8/script_event_listener.h" |
| |
| #include "third_party/blink/renderer/bindings/core/v8/scheduled_action.h" |
| #include "third_party/blink/renderer/bindings/core/v8/script_controller.h" |
| #include "third_party/blink/renderer/bindings/core/v8/source_location.h" |
| #include "third_party/blink/renderer/bindings/core/v8/v8_binding_for_core.h" |
| #include "third_party/blink/renderer/bindings/core/v8/v8_event_listener_impl.h" |
| #include "third_party/blink/renderer/bindings/core/v8/v8_lazy_event_listener.h" |
| #include "third_party/blink/renderer/bindings/core/v8/window_proxy.h" |
| #include "third_party/blink/renderer/core/dom/document.h" |
| #include "third_party/blink/renderer/core/dom/document_parser.h" |
| #include "third_party/blink/renderer/core/dom/qualified_name.h" |
| #include "third_party/blink/renderer/core/frame/local_frame.h" |
| #include "third_party/blink/renderer/platform/bindings/script_state.h" |
| #include "v8/include/v8.h" |
| |
| namespace blink { |
| |
| EventListener* CreateAttributeEventListener( |
| Node* node, |
| const QualifiedName& name, |
| const AtomicString& value, |
| const AtomicString& event_parameter_name) { |
| DCHECK(node); |
| if (value.IsNull()) |
| return nullptr; |
| |
| // FIXME: Very strange: we initialize zero-based number with '1'. |
| TextPosition position(OrdinalNumber::FromZeroBasedInt(1), |
| OrdinalNumber::First()); |
| String source_url; |
| |
| v8::Isolate* isolate = ToIsolate(&node->GetDocument()); |
| if (LocalFrame* frame = node->GetDocument().GetFrame()) { |
| ScriptController& script_controller = frame->GetScriptController(); |
| if (!node->GetDocument().CanExecuteScripts(kAboutToExecuteScript)) |
| return nullptr; |
| position = script_controller.EventHandlerPosition(); |
| source_url = node->GetDocument().Url().GetString(); |
| } |
| |
| return V8LazyEventListener::Create(name.LocalName(), event_parameter_name, |
| value, source_url, position, node, |
| isolate); |
| } |
| |
| EventListener* CreateAttributeEventListener( |
| LocalFrame* frame, |
| const QualifiedName& name, |
| const AtomicString& value, |
| const AtomicString& event_parameter_name) { |
| if (!frame) |
| return nullptr; |
| |
| if (value.IsNull()) |
| return nullptr; |
| |
| if (!frame->GetDocument()->CanExecuteScripts(kAboutToExecuteScript)) |
| return nullptr; |
| |
| TextPosition position = frame->GetScriptController().EventHandlerPosition(); |
| String source_url = frame->GetDocument()->Url().GetString(); |
| |
| return V8LazyEventListener::Create(name.LocalName(), event_parameter_name, |
| value, source_url, position, nullptr, |
| ToIsolate(frame)); |
| } |
| |
| v8::Local<v8::Object> EventListenerHandler(ExecutionContext* execution_context, |
| EventListener* listener) { |
| if (auto* v8_listener = V8AbstractEventHandler::Cast(listener)) { |
| return v8_listener->GetListenerObject(execution_context); |
| } |
| if (auto* v8_listener = V8EventListenerImpl::Cast(listener)) { |
| return v8_listener->GetListenerObject(); |
| } |
| return v8::Local<v8::Object>(); |
| } |
| |
| v8::Local<v8::Function> EventListenerEffectiveFunction( |
| v8::Isolate* isolate, |
| v8::Local<v8::Object> handler) { |
| v8::Local<v8::Function> function; |
| if (handler->IsFunction()) { |
| function = handler.As<v8::Function>(); |
| } else if (handler->IsObject()) { |
| v8::Local<v8::Value> property; |
| // Try the "handleEvent" method (EventListener interface). |
| if (handler |
| ->Get(handler->CreationContext(), |
| V8AtomicString(isolate, "handleEvent")) |
| .ToLocal(&property) && |
| property->IsFunction()) |
| function = property.As<v8::Function>(); |
| // Fall back to the "constructor" property. |
| else if (handler |
| ->Get(handler->CreationContext(), |
| V8AtomicString(isolate, "constructor")) |
| .ToLocal(&property) && |
| property->IsFunction()) |
| function = property.As<v8::Function>(); |
| } |
| if (!function.IsEmpty()) |
| return GetBoundFunction(function); |
| return v8::Local<v8::Function>(); |
| } |
| |
| void GetFunctionLocation(v8::Local<v8::Function> function, |
| String& script_id, |
| int& line_number, |
| int& column_number) { |
| int script_id_value = function->ScriptId(); |
| script_id = String::Number(script_id_value); |
| line_number = function->GetScriptLineNumber(); |
| column_number = function->GetScriptColumnNumber(); |
| } |
| |
| // TODO(yukiy): move this method into V8EventListenerImpl or interface class |
| // of EventListener and EventHandler |
| std::unique_ptr<SourceLocation> GetFunctionLocation( |
| ExecutionContext* execution_context, |
| EventListener* listener) { |
| v8::Isolate* isolate = ToIsolate(execution_context); |
| v8::HandleScope handle_scope(isolate); |
| v8::Local<v8::Object> handler = |
| EventListenerHandler(execution_context, listener); |
| if (handler.IsEmpty()) |
| return nullptr; |
| return SourceLocation::FromFunction( |
| EventListenerEffectiveFunction(isolate, handler)); |
| } |
| |
| } // namespace blink |