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Unified Diff: Source/bindings/v8/V8LazyEventListener.cpp

Issue 351423002: Moved files under Source/bindings/v8 to Source/bindings/core/v8. (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: Created 6 years, 6 months ago
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Index: Source/bindings/v8/V8LazyEventListener.cpp
diff --git a/Source/bindings/v8/V8LazyEventListener.cpp b/Source/bindings/v8/V8LazyEventListener.cpp
deleted file mode 100644
index 23b8fcf52f8cccfff76bd31f40094985377aad85..0000000000000000000000000000000000000000
--- a/Source/bindings/v8/V8LazyEventListener.cpp
+++ /dev/null
@@ -1,233 +0,0 @@
-/*
- * Copyright (C) 2006, 2007, 2008, 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/v8/V8LazyEventListener.h"
-
-#include "bindings/core/v8/V8Document.h"
-#include "bindings/core/v8/V8HTMLFormElement.h"
-#include "bindings/core/v8/V8Node.h"
-#include "bindings/v8/ScriptController.h"
-#include "bindings/v8/ScriptSourceCode.h"
-#include "bindings/v8/V8Binding.h"
-#include "bindings/v8/V8DOMWrapper.h"
-#include "bindings/v8/V8HiddenValue.h"
-#include "bindings/v8/V8ScriptRunner.h"
-#include "core/dom/Document.h"
-#include "core/dom/Node.h"
-#include "core/html/HTMLElement.h"
-#include "core/html/HTMLFormElement.h"
-#include "core/inspector/InspectorInstrumentation.h"
-#include "core/frame/LocalFrame.h"
-#include "core/frame/csp/ContentSecurityPolicy.h"
-
-#include "wtf/StdLibExtras.h"
-
-namespace WebCore {
-
-V8LazyEventListener::V8LazyEventListener(const AtomicString& functionName, const AtomicString& eventParameterName, const String& code, const String sourceURL, const TextPosition& position, Node* node, v8::Isolate* isolate)
- : V8AbstractEventListener(true, isolate)
- , m_functionName(functionName)
- , m_eventParameterName(eventParameterName)
- , m_code(code)
- , m_sourceURL(sourceURL)
- , m_node(node)
- , m_position(position)
-{
-}
-
-template<typename T>
-v8::Handle<v8::Object> toObjectWrapper(T* domObject, ScriptState* scriptState)
-{
- if (!domObject)
- return v8::Object::New(scriptState->isolate());
- v8::Handle<v8::Value> value = toV8(domObject, scriptState->context()->Global(), scriptState->isolate());
- if (value.IsEmpty())
- return v8::Object::New(scriptState->isolate());
- return v8::Local<v8::Object>::New(scriptState->isolate(), value.As<v8::Object>());
-}
-
-v8::Local<v8::Value> V8LazyEventListener::callListenerFunction(v8::Handle<v8::Value> jsEvent, Event* event)
-{
- v8::Local<v8::Object> listenerObject = getListenerObject(scriptState()->executionContext());
- if (listenerObject.IsEmpty())
- return v8::Local<v8::Value>();
-
- v8::Local<v8::Function> handlerFunction = listenerObject.As<v8::Function>();
- v8::Local<v8::Object> receiver = getReceiverObject(event);
- if (handlerFunction.IsEmpty() || receiver.IsEmpty())
- return v8::Local<v8::Value>();
-
- if (!scriptState()->executionContext()->isDocument())
- return v8::Local<v8::Value>();
-
- LocalFrame* frame = toDocument(scriptState()->executionContext())->frame();
- if (!frame)
- return v8::Local<v8::Value>();
-
- if (!frame->script().canExecuteScripts(AboutToExecuteScript))
- return v8::Local<v8::Value>();
-
- v8::Handle<v8::Value> parameters[1] = { jsEvent };
- return frame->script().callFunction(handlerFunction, receiver, WTF_ARRAY_LENGTH(parameters), parameters);
-}
-
-static void V8LazyEventListenerToString(const v8::FunctionCallbackInfo<v8::Value>& info)
-{
- v8SetReturnValue(info, V8HiddenValue::getHiddenValue(info.GetIsolate(), info.Holder(), V8HiddenValue::toStringString(info.GetIsolate())));
-}
-
-void V8LazyEventListener::handleEvent(ExecutionContext* context, Event* event)
-{
- v8::HandleScope handleScope(toIsolate(context));
- // V8LazyEventListener doesn't know the associated context when created.
- // Thus we lazily get the associated context and set a ScriptState on V8AbstractEventListener.
- v8::Local<v8::Context> v8Context = toV8Context(context, world());
- if (v8Context.IsEmpty())
- return;
- setScriptState(ScriptState::from(v8Context));
-
- V8AbstractEventListener::handleEvent(context, event);
-}
-
-void V8LazyEventListener::prepareListenerObject(ExecutionContext* context)
-{
- v8::HandleScope handleScope(toIsolate(context));
- // V8LazyEventListener doesn't know the associated context when created.
- // Thus we lazily get the associated context and set a ScriptState on V8AbstractEventListener.
- v8::Local<v8::Context> v8Context = toV8Context(context, world());
- if (v8Context.IsEmpty())
- return;
- setScriptState(ScriptState::from(v8Context));
-
- if (context->isDocument() && !toDocument(context)->allowInlineEventHandlers(m_node, this, m_sourceURL, m_position.m_line)) {
- clearListenerObject();
- return;
- }
-
- if (hasExistingListenerObject())
- return;
-
- ASSERT(context->isDocument());
-
- ScriptState::Scope scope(scriptState());
- String listenerSource = InspectorInstrumentation::preprocessEventListener(toDocument(context)->frame(), m_code, m_sourceURL, m_functionName);
-
- // FIXME: Remove the following 'with' hack.
- //
- // Nodes other than the document object, when executing inline event
- // handlers push document, form owner, and the target node on the scope chain.
- // We do this by using 'with' statement.
- // See chrome/fast/forms/form-action.html
- // chrome/fast/forms/selected-index-value.html
- // base/fast/overflow/onscroll-layer-self-destruct.html
- //
- // Don't use new lines so that lines in the modified handler
- // have the same numbers as in the original code.
- // FIXME: V8 does not allow us to programmatically create object environments so
- // we have to do this hack! What if m_code escapes to run arbitrary script?
- //
- // Call with 4 arguments instead of 3, pass additional null as the last parameter.
- // By calling the function with 4 arguments, we create a setter on arguments object
- // which would shadow property "3" on the prototype.
- String code = "(function() {"
- "with (this[2]) {"
- "with (this[1]) {"
- "with (this[0]) {"
- "return function(" + m_eventParameterName + ") {" +
- listenerSource + "\n" // Insert '\n' otherwise //-style comments could break the handler.
- "};"
- "}}}})";
-
- v8::Handle<v8::String> codeExternalString = v8String(isolate(), code);
-
- v8::Local<v8::Value> result = V8ScriptRunner::compileAndRunInternalScript(codeExternalString, isolate(), m_sourceURL, m_position);
- if (result.IsEmpty())
- return;
-
- // Call the outer function to get the inner function.
- ASSERT(result->IsFunction());
- v8::Local<v8::Function> intermediateFunction = result.As<v8::Function>();
-
- HTMLFormElement* formElement = 0;
- if (m_node && m_node->isHTMLElement())
- formElement = toHTMLElement(m_node)->formOwner();
-
- v8::Handle<v8::Object> nodeWrapper = toObjectWrapper<Node>(m_node, scriptState());
- v8::Handle<v8::Object> formWrapper = toObjectWrapper<HTMLFormElement>(formElement, scriptState());
- v8::Handle<v8::Object> documentWrapper = toObjectWrapper<Document>(m_node ? m_node->ownerDocument() : 0, scriptState());
-
- v8::Local<v8::Object> thisObject = v8::Object::New(isolate());
- if (thisObject.IsEmpty())
- return;
- if (!thisObject->ForceSet(v8::Integer::New(isolate(), 0), nodeWrapper))
- return;
- if (!thisObject->ForceSet(v8::Integer::New(isolate(), 1), formWrapper))
- return;
- if (!thisObject->ForceSet(v8::Integer::New(isolate(), 2), documentWrapper))
- return;
-
- // FIXME: Remove this code when we stop doing the 'with' hack above.
- v8::Local<v8::Value> innerValue = V8ScriptRunner::callInternalFunction(intermediateFunction, thisObject, 0, 0, isolate());
- if (innerValue.IsEmpty() || !innerValue->IsFunction())
- return;
-
- v8::Local<v8::Function> wrappedFunction = innerValue.As<v8::Function>();
-
- // Change the toString function on the wrapper function to avoid it
- // returning the source for the actual wrapper function. Instead it
- // returns source for a clean wrapper function with the event
- // argument wrapping the event source code. The reason for this is
- // that some web sites use toString on event functions and eval the
- // source returned (sometimes a RegExp is applied as well) for some
- // other use. That fails miserably if the actual wrapper source is
- // returned.
- v8::Local<v8::Function> toStringFunction = v8::Function::New(isolate(), V8LazyEventListenerToString);
- ASSERT(!toStringFunction.IsEmpty());
- String toStringString = "function " + m_functionName + "(" + m_eventParameterName + ") {\n " + m_code + "\n}";
- V8HiddenValue::setHiddenValue(isolate(), wrappedFunction, V8HiddenValue::toStringString(isolate()), v8String(isolate(), toStringString));
- wrappedFunction->Set(v8AtomicString(isolate(), "toString"), toStringFunction);
- wrappedFunction->SetName(v8String(isolate(), m_functionName));
-
- // FIXME: Remove the following comment-outs.
- // See https://bugs.webkit.org/show_bug.cgi?id=85152 for more details.
- //
- // For the time being, we comment out the following code since the
- // second parsing can happen.
- // // Since we only parse once, there's no need to keep data used for parsing around anymore.
- // m_functionName = String();
- // m_code = String();
- // m_eventParameterName = String();
- // m_sourceURL = String();
-
- setListenerObject(wrappedFunction);
-}
-
-} // namespace WebCore
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