sky/engine/bindings-dart/core/dart/DartInjectedScriptManager.cpp

/*
 * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
 * Copyright (C) 2008 Matt Lilek <webkit@mattlilek.com>
 * Copyright (C) 2012 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:
 *
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 2.  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.
 * 3.  Neither the name of Apple Computer, Inc. ("Apple") 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 APPLE AND ITS 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 APPLE OR ITS 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/dart/DartInjectedScriptManager.h"

#include "bindings/common/ScriptValue.h"
#include "bindings/core/dart/DartInjectedScript.h"
#include "bindings/core/dart/DartScriptState.h"
#include "core/inspector/InjectedScriptHost.h"
#include "core/inspector/InjectedScriptManager.h"
#include "core/inspector/JSONParser.h"
#include "platform/JSONValues.h"
#include "public/platform/Platform.h"
#include "public/platform/WebData.h"
#include "wtf/PassOwnPtr.h"

namespace blink {

DartInjectedScriptManager::DartInjectedScriptManager(InspectedStateAccessCheck accessCheck, InjectedScriptManager* javaScriptInjectedScriptManager)
    : m_nextInjectedScriptId(1000000000) // Elegant design so that Dart and JavaScript ids don't overlap.
    , m_inspectedStateAccessCheck(accessCheck)
    , m_javaScriptInjectedScriptManager(javaScriptInjectedScriptManager)
{
}

DartInjectedScriptManager::~DartInjectedScriptManager()
{
}

InjectedScriptHost* DartInjectedScriptManager::injectedScriptHost()
{
    return m_javaScriptInjectedScriptManager->injectedScriptHost();
}

DartInjectedScript* DartInjectedScriptManager::injectedScriptForId(int id)
{
    IdToInjectedScriptMap::iterator it = m_idToInjectedScript.find(id);
    if (it != m_idToInjectedScript.end())
        return it->value;
    for (ScriptStateToId::iterator it = m_scriptStateToId.begin(); it != m_scriptStateToId.end(); ++it) {
        if (it->value == id)
            return injectedScriptFor(it->key.get());
    }
    return 0;
}

int DartInjectedScriptManager::injectedScriptIdFor(ScriptState* scriptState)
{
    ScriptStateToId::iterator it = m_scriptStateToId.find(scriptState);
    if (it != m_scriptStateToId.end())
        return it->value;
    int id = m_nextInjectedScriptId++;
    m_scriptStateToId.set(scriptState, id);
    return id;
}

DartInjectedScript* DartInjectedScriptManager::injectedScriptForObjectId(const String& objectId)
{
    RefPtr<JSONValue> parsedObjectId = parseJSON(objectId);
    if (parsedObjectId && parsedObjectId->type() == JSONValue::TypeObject) {
        long injectedScriptId = 0;
        bool success = parsedObjectId->asObject()->getNumber("injectedScriptId", &injectedScriptId);
        if (success) {
            IdToInjectedScriptMap::iterator s = m_idToInjectedScript.find(injectedScriptId);
            if (s != m_idToInjectedScript.end())
                return s->value;
        }
    }
    return 0;
}

void DartInjectedScriptManager::discardInjectedScripts()
{
    m_idToInjectedScript.clear();
    m_scriptStateToId.clear();
}

void DartInjectedScriptManager::discardInjectedScriptsFor(LocalDOMWindow* window)
{
    if (m_scriptStateToId.isEmpty())
        return;

    Vector<long> idsToRemove;
    IdToInjectedScriptMap::iterator end = m_idToInjectedScript.end();
    for (IdToInjectedScriptMap::iterator it = m_idToInjectedScript.begin(); it != end; ++it) {
        ScriptState* scriptState = it->value->scriptState();
        if (window != scriptState->domWindow())
            continue;
        m_scriptStateToId.remove(scriptState);
        idsToRemove.append(it->key);
    }
    for (size_t i = 0; i < idsToRemove.size(); i++)
        delete m_idToInjectedScript.get(idsToRemove[i]);
    m_idToInjectedScript.removeAll(idsToRemove);


    // Now remove script states that have id but no injected script.
    Vector<ScriptState*> scriptStatesToRemove;
    for (ScriptStateToId::iterator it = m_scriptStateToId.begin(); it != m_scriptStateToId.end(); ++it) {
        ScriptState* scriptState = it->key.get();
        if (window == scriptState->domWindow())
            scriptStatesToRemove.append(scriptState);
    }
    m_scriptStateToId.removeAll(scriptStatesToRemove);
}

bool DartInjectedScriptManager::canAccessInspectedWorkerGlobalScope(ScriptState*)
{
    return true;
}

void DartInjectedScriptManager::releaseObjectGroup(const String& objectGroup)
{
    Vector<int> keys;
    keys.appendRange(m_idToInjectedScript.keys().begin(), m_idToInjectedScript.keys().end());
    for (Vector<int>::iterator k = keys.begin(); k != keys.end(); ++k) {
        IdToInjectedScriptMap::iterator s = m_idToInjectedScript.find(*k);
        if (s != m_idToInjectedScript.end())
            s->value->releaseObjectGroup(objectGroup); // m_idToInjectedScript may change here.
    }
}

DartInjectedScript* DartInjectedScriptManager::injectedScriptFor(ScriptState* inspectedScriptState)
{
    if (!inspectedScriptState)
        return 0;
    ScriptStateToId::iterator it = m_scriptStateToId.find(inspectedScriptState);
    if (it != m_scriptStateToId.end()) {
        IdToInjectedScriptMap::iterator it1 = m_idToInjectedScript.find(it->value);
        if (it1 != m_idToInjectedScript.end())
            return it1->value;
    }

    if (!m_inspectedStateAccessCheck(inspectedScriptState))
        return 0;

    int id = injectedScriptIdFor(inspectedScriptState);

    DartInjectedScript* result;
    ASSERT(!inspectedScriptState->isJavaScript());
    result = new DartInjectedScript(static_cast<DartScriptState*>(inspectedScriptState), m_inspectedStateAccessCheck, id, injectedScriptHost(), m_javaScriptInjectedScriptManager);
    m_idToInjectedScript.set(id, result);
    return result;
}

} // namespace blink