// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "content/browser/renderer_host/mock_render_process_host.h"

#include "base/lazy_instance.h"
#include "base/message_loop.h"
#include "base/time.h"
#include "content/browser/child_process_security_policy.h"
#include "content/browser/renderer_host/render_process_host_impl.h"
#include "content/common/child_process_info.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/notification_types.h"

MockRenderProcessHost::MockRenderProcessHost(
    content::BrowserContext* browser_context)
        : transport_dib_(NULL),
          bad_msg_count_(0),
          factory_(NULL),
          id_(ChildProcessInfo::GenerateChildProcessUniqueId()),
          browser_context_(browser_context),
          max_page_id_(-1),
          fast_shutdown_started_(false) {
  // Child process security operations can't be unit tested unless we add
  // ourselves as an existing child process.
  ChildProcessSecurityPolicy::GetInstance()->Add(GetID());

  RenderProcessHostImpl::RegisterHost(GetID(), this);
}

MockRenderProcessHost::~MockRenderProcessHost() {
  ChildProcessSecurityPolicy::GetInstance()->Remove(GetID());
  delete transport_dib_;
  if (factory_)
    factory_->Remove(this);
  // In unit tests, Release() might not have been called.
  RenderProcessHostImpl::UnregisterHost(GetID());
}

void MockRenderProcessHost::EnableSendQueue() {
}

bool MockRenderProcessHost::Init(bool is_accessibility_enabled) {
  return true;
}

int MockRenderProcessHost::GetNextRoutingID() {
  static int prev_routing_id = 0;
  return ++prev_routing_id;
}

void MockRenderProcessHost::UpdateAndSendMaxPageID(int32 page_id) {
  UpdateMaxPageID(page_id);
}

void MockRenderProcessHost::CancelResourceRequests(int render_widget_id) {
}

void MockRenderProcessHost::CrossSiteSwapOutACK(
    const ViewMsg_SwapOut_Params& params) {
}

bool MockRenderProcessHost::WaitForUpdateMsg(int render_widget_id,
                                             const base::TimeDelta& max_delay,
                                             IPC::Message* msg) {
  return false;
}

void MockRenderProcessHost::ReceivedBadMessage() {
  ++bad_msg_count_;
}

void MockRenderProcessHost::WidgetRestored() {
}

void MockRenderProcessHost::WidgetHidden() {
}

int MockRenderProcessHost::VisibleWidgetCount() const {
  return 1;
}

void MockRenderProcessHost::AddWord(const string16& word) {
}

bool MockRenderProcessHost::FastShutdownIfPossible() {
  // We aren't actually going to do anything, but set |fast_shutdown_started_|
  // to true so that tests know we've been called.
  fast_shutdown_started_ = true;
  return true;
}

bool MockRenderProcessHost::FastShutdownStarted() const {
  return fast_shutdown_started_;
}

void MockRenderProcessHost::DumpHandles() {
}

base::ProcessHandle MockRenderProcessHost::GetHandle() {
  return base::kNullProcessHandle;
}

bool MockRenderProcessHost::Send(IPC::Message* msg) {
  // Save the message in the sink.
  sink_.OnMessageReceived(*msg);
  delete msg;
  return true;
}

TransportDIB* MockRenderProcessHost::GetTransportDIB(TransportDIB::Id dib_id) {
  if (transport_dib_)
    return transport_dib_;
#if defined(OS_WIN)
  HANDLE duped;
  DuplicateHandle(GetCurrentProcess(), dib_id.handle, GetCurrentProcess(),
                  &duped, 0, TRUE, DUPLICATE_SAME_ACCESS);
  transport_dib_ = TransportDIB::Map(duped);
#elif defined(OS_MACOSX)
  // On Mac, TransportDIBs are always created in the browser, so we cannot map
  // one from a dib_id.
  transport_dib_ = TransportDIB::Create(100 * 100 * 4, 0);
#elif defined(OS_POSIX)
  transport_dib_ = TransportDIB::Map(dib_id.shmkey);
#endif

  return transport_dib_;
}

void MockRenderProcessHost::SetCompositingSurface(
    int render_widget_id,
    gfx::PluginWindowHandle compositing_surface) {
}

int MockRenderProcessHost::GetID() const {
  return id_;
}

bool MockRenderProcessHost::HasConnection() const {
  return true;
}

void MockRenderProcessHost::SetIgnoreInputEvents(bool ignore_input_events) {
}

bool MockRenderProcessHost::IgnoreInputEvents() const {
  return false;
}

void MockRenderProcessHost::Attach(IPC::Channel::Listener* listener,
                                   int routing_id) {
  listeners_.AddWithID(listener, routing_id);
}

void MockRenderProcessHost::Release(int listener_id) {
  listeners_.Remove(listener_id);
  Cleanup();
}

void MockRenderProcessHost::Cleanup() {
  if (listeners_.IsEmpty()) {
    content::NotificationService::current()->Notify(
        content::NOTIFICATION_RENDERER_PROCESS_TERMINATED,
        content::Source<RenderProcessHost>(this),
        content::NotificationService::NoDetails());
    MessageLoop::current()->DeleteSoon(FROM_HERE, this);
    RenderProcessHostImpl::UnregisterHost(GetID());
  }
}

void MockRenderProcessHost::ReportExpectingClose(int32 listener_id) {
}

void MockRenderProcessHost::AddPendingView() {
}

void MockRenderProcessHost::RemovePendingView() {
}

void MockRenderProcessHost::SetSuddenTerminationAllowed(bool allowed) {
}

bool MockRenderProcessHost::SuddenTerminationAllowed() const {
  return true;
}

IPC::Channel::Listener* MockRenderProcessHost::GetListenerByID(
    int routing_id) {
  return listeners_.Lookup(routing_id);
}

void MockRenderProcessHost::UpdateMaxPageID(int32 page_id) {
  if (page_id > max_page_id_)
    max_page_id_ = page_id;
}

content::BrowserContext* MockRenderProcessHost::GetBrowserContext() const {
  return browser_context_;
}

IPC::ChannelProxy* MockRenderProcessHost::GetChannel() {
  return NULL;
}

bool MockRenderProcessHost::FastShutdownForPageCount(size_t count) {
  if (listeners_.size() == count)
    return FastShutdownIfPossible();
  return false;
}

base::TimeDelta MockRenderProcessHost::GetChildProcessIdleTime() const {
  return base::TimeDelta::FromMilliseconds(0);
}

content::RenderProcessHost::listeners_iterator
    MockRenderProcessHost::ListenersIterator() {
  IDMap<IPC::Channel::Listener> listeners;
  return listeners_iterator(&listeners);
}

bool MockRenderProcessHost::OnMessageReceived(const IPC::Message& msg) {
  return false;
}

void MockRenderProcessHost::OnChannelConnected(int32 peer_pid) {
}

MockRenderProcessHostFactory::MockRenderProcessHostFactory() {}

MockRenderProcessHostFactory::~MockRenderProcessHostFactory() {
  // Detach this object from MockRenderProcesses to prevent STLDeleteElements()
  // from calling MockRenderProcessHostFactory::Remove().
  for (ScopedVector<MockRenderProcessHost>::iterator it = processes_.begin();
       it != processes_.end(); ++it) {
    (*it)->SetFactory(NULL);
  }
}

content::RenderProcessHost*
    MockRenderProcessHostFactory::CreateRenderProcessHost(
        content::BrowserContext* browser_context) const {
  MockRenderProcessHost* host = new MockRenderProcessHost(browser_context);
  if (host) {
    processes_.push_back(host);
    host->SetFactory(this);
  }
  return host;
}

void MockRenderProcessHostFactory::Remove(MockRenderProcessHost* host) const {
  for (ScopedVector<MockRenderProcessHost>::iterator it = processes_.begin();
       it != processes_.end(); ++it) {
    if (*it == host) {
      processes_.weak_erase(it);
      break;
    }
  }
}