/*
 * Copyright (C) 2010 Apple 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.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. 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 INC. 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 "WebContext.h"

#include "RunLoop.h"
#include "WebCoreArgumentCoders.h"
#include "WebPageNamespace.h"
#include "WebPreferences.h"
#include "WebProcessManager.h"
#include "WebProcessMessageKinds.h"
#include "WebProcessProxy.h"

#include "WKContextPrivate.h"

#ifndef NDEBUG
#include <wtf/RefCountedLeakCounter.h>
#endif

using namespace WebCore;

namespace WebKit {

#ifndef NDEBUG
static WTF::RefCountedLeakCounter webContextCounter("WebContext");
#endif

WebContext* WebContext::sharedProcessContext()
{
    static WebContext* context = adoptRef(new WebContext(ProcessModelSharedSecondaryProcess, String())).leakRef();
    return context;
}

WebContext* WebContext::sharedThreadContext()
{
    static WebContext* context = adoptRef(new WebContext(ProcessModelSharedSecondaryThread, String())).leakRef();
    return context;
}

WebContext::WebContext(ProcessModel processModel, const WebCore::String& injectedBundlePath)
    : m_processModel(processModel)
    , m_injectedBundlePath(injectedBundlePath)
{
    RunLoop::initializeMainRunLoop();

    m_preferences = WebPreferences::shared();
    m_preferences->addContext(this);

#ifndef NDEBUG
    webContextCounter.increment();
#endif
}

WebContext::~WebContext()
{
    ASSERT(m_pageNamespaces.isEmpty());
    m_preferences->removeContext(this);

#ifndef NDEBUG
    webContextCounter.decrement();
#endif
}

void WebContext::initializeInjectedBundleClient(WKContextInjectedBundleClient* client)
{
    m_injectedBundleClient.initialize(client);
}

void WebContext::ensureWebProcess()
{
    if (m_process && m_process->isValid())
        return;

    m_process = WebProcessManager::shared().getWebProcess(this);
}

WebPageProxy* WebContext::createWebPage(WebPageNamespace* pageNamespace)
{
    ensureWebProcess();
    return m_process->createWebPage(pageNamespace);
}

void WebContext::reviveIfNecessary()
{
    ensureWebProcess();
}

WebPageNamespace* WebContext::createPageNamespace()
{
    RefPtr<WebPageNamespace> pageNamespace = WebPageNamespace::create(this);
    m_pageNamespaces.add(pageNamespace.get());
    return pageNamespace.release().releaseRef();
}

void WebContext::pageNamespaceWasDestroyed(WebPageNamespace* pageNamespace)
{
    ASSERT(m_pageNamespaces.contains(pageNamespace));
    m_pageNamespaces.remove(pageNamespace);
}

void WebContext::setPreferences(WebPreferences* preferences)
{
    ASSERT(preferences);

    if (preferences == m_preferences)
        return;

    m_preferences->removeContext(this);
    m_preferences = preferences;
    m_preferences->addContext(this);

    // FIXME: Update all Pages/PageNamespace with the new WebPreferences.
}

WebPreferences* WebContext::preferences() const
{
    return m_preferences.get();
}

void WebContext::preferencesDidChange()
{
    for (HashSet<WebPageNamespace*>::iterator it = m_pageNamespaces.begin(), end = m_pageNamespaces.end(); it != end; ++it) {
        WebPageNamespace* pageNamespace = *it;
        pageNamespace->preferencesDidChange();
    }
}

// InjectedBundle client

void WebContext::didRecieveMessageFromInjectedBundle(const WebCore::String& message)
{
    m_injectedBundleClient.didRecieveMessageFromInjectedBundle(this, message);
}

void WebContext::postMessageToInjectedBundle(WebCore::StringImpl* message)
{
    if (!m_process)
        return;

    m_process->send(WebProcessMessage::PostMessage, 0, CoreIPC::In(String(message)));
}

void WebContext::getStatistics(WKContextStatistics* statistics)
{
    memset(statistics, 0, sizeof(WKContextStatistics));

    statistics->numberOfWKPageNamespaces = m_pageNamespaces.size();

    for (HashSet<WebPageNamespace*>::iterator it = m_pageNamespaces.begin(), end = m_pageNamespaces.end(); it != end; ++it)
        (*it)->getStatistics(statistics);
}

void WebContext::setAdditionalPluginPath(const WebCore::String& pluginPath)
{
    Vector<String> pluginPaths;
    pluginPaths.append(pluginPath);

    m_pluginInfoStore.setAdditionalPluginPaths(pluginPaths);
}

} // namespace WebKit