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/*
* Copyright (C) 2010 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 "DebuggerAgentImpl.h"
#include "DebuggerAgentManager.h"
#include "Document.h"
#include "Frame.h"
#include "Page.h"
#include "V8Binding.h"
#include "V8DOMWindow.h"
#include "V8Index.h"
#include "V8Proxy.h"
#include "WebDevToolsAgentImpl.h"
#include "WebViewImpl.h"
#include <wtf/HashSet.h>
#include <wtf/RefPtr.h>
#include <wtf/Vector.h>
using WebCore::DOMWindow;
using WebCore::Document;
using WebCore::Frame;
using WebCore::Page;
using WebCore::String;
using WebCore::V8ClassIndex;
using WebCore::V8DOMWindow;
using WebCore::V8DOMWrapper;
using WebCore::V8Proxy;
namespace WebKit {
DebuggerAgentImpl::DebuggerAgentImpl(
WebViewImpl* webViewImpl,
DebuggerAgentDelegate* delegate,
WebDevToolsAgentImpl* webdevtoolsAgent)
: m_webViewImpl(webViewImpl)
, m_delegate(delegate)
, m_webdevtoolsAgent(webdevtoolsAgent)
, m_autoContinueOnException(false)
{
DebuggerAgentManager::debugAttach(this);
}
DebuggerAgentImpl::~DebuggerAgentImpl()
{
DebuggerAgentManager::debugDetach(this);
}
void DebuggerAgentImpl::getContextId()
{
m_delegate->setContextId(m_webdevtoolsAgent->hostId());
}
void DebuggerAgentImpl::processDebugCommands()
{
DebuggerAgentManager::UtilityContextScope utilityScope;
v8::Debug::ProcessDebugMessages();
}
void DebuggerAgentImpl::debuggerOutput(const String& command)
{
m_delegate->debuggerOutput(command);
m_webdevtoolsAgent->forceRepaint();
}
// static
void DebuggerAgentImpl::createUtilityContext(Frame* frame, v8::Persistent<v8::Context>* context)
{
v8::HandleScope scope;
bool canExecuteScripts = frame->script()->canExecuteScripts();
// Set up the DOM window as the prototype of the new global object.
v8::Handle<v8::Context> windowContext = V8Proxy::context(frame);
v8::Handle<v8::Object> windowGlobal;
v8::Handle<v8::Object> windowWrapper;
if (canExecuteScripts) {
// FIXME: This check prevents renderer from crashing, while providing limited capabilities for
// DOM inspection, Resources tracking, no scripts support, some timeline profiling. Console will
// result in exceptions for each evaluation. There is still some work that needs to be done in
// order to polish the script-less experience.
windowGlobal = windowContext->Global();
windowWrapper = V8DOMWrapper::lookupDOMWrapper(V8DOMWindow::GetTemplate(), windowGlobal);
ASSERT(V8DOMWindow::toNative(windowWrapper) == frame->domWindow());
}
v8::Handle<v8::ObjectTemplate> globalTemplate = v8::ObjectTemplate::New();
// TODO(yurys): provide a function in v8 bindings that would make the
// utility context more like main world context of the inspected frame,
// otherwise we need to manually make it satisfy various invariants
// that V8Proxy::getEntered and some other V8Proxy methods expect to find
// on v8 contexts on the contexts stack.
// See V8Proxy::createNewContext.
//
// Install a security handler with V8.
globalTemplate->SetAccessCheckCallbacks(
V8DOMWindow::namedSecurityCheck,
V8DOMWindow::indexedSecurityCheck,
v8::Integer::New(V8ClassIndex::DOMWINDOW));
// We set number of internal fields to match that in V8DOMWindow wrapper.
// See http://crbug.com/28961
globalTemplate->SetInternalFieldCount(V8DOMWindow::internalFieldCount);
*context = v8::Context::New(0 /* no extensions */, globalTemplate, v8::Handle<v8::Object>());
v8::Context::Scope contextScope(*context);
v8::Handle<v8::Object> global = (*context)->Global();
v8::Handle<v8::String> implicitProtoString = v8::String::New("__proto__");
if (canExecuteScripts)
global->Set(implicitProtoString, windowWrapper);
// Give the code running in the new context a way to get access to the
// original context.
if (canExecuteScripts)
global->Set(v8::String::New("contentWindow"), windowGlobal);
}
String DebuggerAgentImpl::executeUtilityFunction(
v8::Handle<v8::Context> context,
int callId,
const char* object,
const String &functionName,
const String& jsonArgs,
bool async,
String* exception)
{
v8::HandleScope scope;
ASSERT(!context.IsEmpty());
if (context.IsEmpty()) {
*exception = "No window context.";
return "";
}
v8::Context::Scope contextScope(context);
DebuggerAgentManager::UtilityContextScope utilityScope;
v8::Handle<v8::Object> dispatchObject = v8::Handle<v8::Object>::Cast(
context->Global()->Get(v8::String::New(object)));
v8::Handle<v8::Value> dispatchFunction = dispatchObject->Get(v8::String::New("dispatch"));
ASSERT(dispatchFunction->IsFunction());
v8::Handle<v8::Function> function = v8::Handle<v8::Function>::Cast(dispatchFunction);
v8::Handle<v8::String> functionNameWrapper = v8::Handle<v8::String>(
v8::String::New(functionName.utf8().data()));
v8::Handle<v8::String> jsonArgsWrapper = v8::Handle<v8::String>(
v8::String::New(jsonArgs.utf8().data()));
v8::Handle<v8::Number> callIdWrapper = v8::Handle<v8::Number>(
v8::Number::New(async ? callId : 0));
v8::Handle<v8::Value> args[] = {
functionNameWrapper,
jsonArgsWrapper,
callIdWrapper
};
v8::TryCatch tryCatch;
v8::Handle<v8::Value> resObj = function->Call(context->Global(), 3, args);
if (tryCatch.HasCaught()) {
v8::Local<v8::Message> message = tryCatch.Message();
if (message.IsEmpty())
*exception = "Unknown exception";
else
*exception = WebCore::toWebCoreString(message->Get());
return "";
}
return WebCore::toWebCoreStringWithNullCheck(resObj);
}
WebCore::Page* DebuggerAgentImpl::page()
{
return m_webViewImpl->page();
}
} // namespace WebKit
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