components/html_viewer/blink_platform_impl.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "components/html_viewer/blink_platform_impl.h"
   6
   7 #include <cmath>
   8
   9 #include "base/command_line.h"
  10 #include "base/rand_util.h"
  11 #include "base/stl_util.h"
  12 #include "base/synchronization/waitable_event.h"
  13 #include "base/thread_task_runner_handle.h"
  14 #include "base/threading/platform_thread.h"
  15 #include "base/time/time.h"
  16 #include "components/html_viewer/blink_resource_constants.h"
  17 #include "components/html_viewer/web_clipboard_impl.h"
  18 #include "components/html_viewer/web_cookie_jar_impl.h"
  19 #include "components/html_viewer/web_message_port_channel_impl.h"
  20 #include "components/html_viewer/web_socket_handle_impl.h"
  21 #include "components/html_viewer/web_url_loader_impl.h"
  22 #include "components/mime_util/mime_util.h"
  23 #include "components/scheduler/child/webthread_impl_for_worker_scheduler.h"
  24 #include "components/scheduler/renderer/renderer_scheduler.h"
  25 #include "components/scheduler/renderer/webthread_impl_for_renderer_scheduler.h"
  26 #include "mojo/application/public/cpp/application_impl.h"
  27 #include "mojo/application/public/cpp/connect.h"
  28 #include "mojo/common/user_agent.h"
  29 #include "net/base/data_url.h"
  30 #include "net/base/ip_address_number.h"
  31 #include "net/base/net_errors.h"
  32 #include "net/base/net_util.h"
  33 #include "third_party/WebKit/public/platform/WebWaitableEvent.h"
  34 #include "ui/events/gestures/blink/web_gesture_curve_impl.h"
  35
  36 namespace html_viewer {
  37 namespace {
  38
  39 // Allows overriding user agent scring.
  40 const char kUserAgentSwitch[] = "user-agent";
  41
  42 class WebWaitableEventImpl : public blink::WebWaitableEvent {
  43  public:
  44   WebWaitableEventImpl() : impl_(new base::WaitableEvent(false, false)) {}
  45   ~WebWaitableEventImpl() override {}
  46
  47   void wait() override { impl_->Wait(); }
  48   void signal() override { impl_->Signal(); }
  49
  50   base::WaitableEvent* impl() {
  51     return impl_.get();
  52   }
  53
  54  private:
  55   scoped_ptr<base::WaitableEvent> impl_;
  56   DISALLOW_COPY_AND_ASSIGN(WebWaitableEventImpl);
  57 };
  58
  59 }  // namespace
  60
  61 BlinkPlatformImpl::BlinkPlatformImpl(
  62     mojo::ApplicationImpl* app,
  63     scheduler::RendererScheduler* renderer_scheduler)
  64     : main_thread_task_runner_(renderer_scheduler->DefaultTaskRunner()),
  65       main_thread_(
  66           new scheduler::WebThreadImplForRendererScheduler(renderer_scheduler)),
  67       shared_timer_func_(NULL),
  68       shared_timer_fire_time_(0.0),
  69       shared_timer_fire_time_was_set_while_suspended_(false),
  70       shared_timer_suspended_(0) {
  71   if (app) {
  72     mojo::URLRequestPtr request(mojo::URLRequest::New());
  73     request->url = mojo::String::From("mojo:network_service");
  74     mojo::ApplicationConnection* connection =
  75         app->ConnectToApplication(request.Pass());
  76     connection->ConnectToService(&network_service_);
  77     connection->ConnectToService(&url_loader_factory_);
  78
  79     mojo::CookieStorePtr cookie_store;
  80     network_service_->GetCookieStore(GetProxy(&cookie_store));
  81     cookie_jar_.reset(new WebCookieJarImpl(cookie_store.Pass()));
  82
  83     mojo::ClipboardPtr clipboard;
  84     mojo::URLRequestPtr request2(mojo::URLRequest::New());
  85     request2->url = mojo::String::From("mojo:clipboard");
  86     app->ConnectToService(request2.Pass(), &clipboard);
  87     clipboard_.reset(new WebClipboardImpl(clipboard.Pass()));
  88   }
  89   shared_timer_.SetTaskRunner(main_thread_task_runner_);
  90 }
  91
  92 BlinkPlatformImpl::~BlinkPlatformImpl() {
  93 }
  94
  95 blink::WebCookieJar* BlinkPlatformImpl::cookieJar() {
  96   return cookie_jar_.get();
  97 }
  98
  99 blink::WebClipboard* BlinkPlatformImpl::clipboard() {
 100   return clipboard_.get();
 101 }
 102
 103 blink::WebMimeRegistry* BlinkPlatformImpl::mimeRegistry() {
 104   return &mime_registry_;
 105 }
 106
 107 blink::WebThemeEngine* BlinkPlatformImpl::themeEngine() {
 108   return &theme_engine_;
 109 }
 110
 111 blink::WebString BlinkPlatformImpl::defaultLocale() {
 112   return blink::WebString::fromUTF8("en-US");
 113 }
 114
 115 blink::WebBlobRegistry* BlinkPlatformImpl::blobRegistry() {
 116   return &blob_registry_;
 117 }
 118
 119 double BlinkPlatformImpl::currentTime() {
 120   return base::Time::Now().ToDoubleT();
 121 }
 122
 123 double BlinkPlatformImpl::monotonicallyIncreasingTime() {
 124   return base::TimeTicks::Now().ToInternalValue() /
 125       static_cast<double>(base::Time::kMicrosecondsPerSecond);
 126 }
 127
 128 void BlinkPlatformImpl::cryptographicallyRandomValues(unsigned char* buffer,
 129                                                       size_t length) {
 130   base::RandBytes(buffer, length);
 131 }
 132
 133 void BlinkPlatformImpl::setSharedTimerFiredFunction(void (*func)()) {
 134   shared_timer_func_ = func;
 135 }
 136
 137 void BlinkPlatformImpl::setSharedTimerFireInterval(
 138     double interval_seconds) {
 139   shared_timer_fire_time_ = interval_seconds + monotonicallyIncreasingTime();
 140   if (shared_timer_suspended_) {
 141     shared_timer_fire_time_was_set_while_suspended_ = true;
 142     return;
 143   }
 144
 145   // By converting between double and int64 representation, we run the risk
 146   // of losing precision due to rounding errors. Performing computations in
 147   // microseconds reduces this risk somewhat. But there still is the potential
 148   // of us computing a fire time for the timer that is shorter than what we
 149   // need.
 150   // As the event loop will check event deadlines prior to actually firing
 151   // them, there is a risk of needlessly rescheduling events and of
 152   // needlessly looping if sleep times are too short even by small amounts.
 153   // This results in measurable performance degradation unless we use ceil() to
 154   // always round up the sleep times.
 155   int64 interval = static_cast<int64>(
 156       ceil(interval_seconds * base::Time::kMillisecondsPerSecond)
 157       * base::Time::kMicrosecondsPerMillisecond);
 158
 159   if (interval < 0)
 160     interval = 0;
 161
 162   shared_timer_.Stop();
 163   shared_timer_.Start(FROM_HERE, base::TimeDelta::FromMicroseconds(interval),
 164                       this, &BlinkPlatformImpl::DoTimeout);
 165 }
 166
 167 void BlinkPlatformImpl::stopSharedTimer() {
 168   shared_timer_.Stop();
 169 }
 170
 171 bool BlinkPlatformImpl::isThreadedCompositingEnabled() {
 172   return true;
 173 }
 174
 175 blink::WebCompositorSupport* BlinkPlatformImpl::compositorSupport() {
 176   return &compositor_support_;
 177 }
 178
 179 void BlinkPlatformImpl::createMessageChannel(
 180     blink::WebMessagePortChannel** channel1,
 181     blink::WebMessagePortChannel** channel2) {
 182   WebMessagePortChannelImpl::CreatePair(channel1, channel2);
 183 }
 184
 185 blink::WebScrollbarBehavior* BlinkPlatformImpl::scrollbarBehavior() {
 186   return &scrollbar_behavior_;
 187 }
 188
 189 const unsigned char* BlinkPlatformImpl::getTraceCategoryEnabledFlag(
 190     const char* category_name) {
 191   static const unsigned char buf[] = "*";
 192   return buf;
 193 }
 194
 195 blink::WebData BlinkPlatformImpl::loadResource(const char* resource) {
 196   for (size_t i = 0; i < arraysize(kDataResources); ++i) {
 197     if (!strcmp(resource, kDataResources[i].name)) {
 198       int length;
 199       const unsigned char* data =
 200           blink_resource_map_.GetResource(kDataResources[i].id, &length);
 201       CHECK(data != nullptr && length > 0);
 202       return blink::WebData(reinterpret_cast<const char*>(data), length);
 203     }
 204   }
 205   NOTREACHED() << "Requested resource is unavailable: " << resource;
 206   return blink::WebData();
 207 }
 208
 209 blink::WebURLLoader* BlinkPlatformImpl::createURLLoader() {
 210   return new WebURLLoaderImpl(url_loader_factory_.get(), &blob_registry_);
 211 }
 212
 213 blink::WebSocketHandle* BlinkPlatformImpl::createWebSocketHandle() {
 214   return new WebSocketHandleImpl(network_service_.get());
 215 }
 216
 217 blink::WebString BlinkPlatformImpl::userAgent() {
 218   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
 219   if (command_line->HasSwitch(kUserAgentSwitch)) {
 220     return blink::WebString::fromUTF8(
 221         command_line->GetSwitchValueASCII(kUserAgentSwitch));
 222   }
 223   return blink::WebString::fromUTF8(mojo::common::GetUserAgent());
 224 }
 225
 226 blink::WebData BlinkPlatformImpl::parseDataURL(
 227     const blink::WebURL& url,
 228     blink::WebString& mimetype_out,
 229     blink::WebString& charset_out) {
 230   std::string mimetype, charset, data;
 231   if (net::DataURL::Parse(url, &mimetype, &charset, &data) &&
 232       mime_util::IsSupportedMimeType(mimetype)) {
 233     mimetype_out = blink::WebString::fromUTF8(mimetype);
 234     charset_out = blink::WebString::fromUTF8(charset);
 235     return data;
 236   }
 237   return blink::WebData();
 238 }
 239
 240 blink::WebURLError BlinkPlatformImpl::cancelledError(const blink::WebURL& url)
 241     const {
 242   blink::WebURLError error;
 243   error.domain = blink::WebString::fromUTF8(net::kErrorDomain);
 244   error.reason = net::ERR_ABORTED;
 245   error.unreachableURL = url;
 246   error.staleCopyInCache = false;
 247   error.isCancellation = true;
 248   return error;
 249 }
 250
 251 bool BlinkPlatformImpl::isReservedIPAddress(
 252     const blink::WebString& host) const {
 253   net::IPAddressNumber address;
 254   if (!net::ParseURLHostnameToNumber(host.utf8(), &address))
 255     return false;
 256   return net::IsIPAddressReserved(address);
 257 }
 258
 259 blink::WebThread* BlinkPlatformImpl::createThread(const char* name) {
 260   scheduler::WebThreadImplForWorkerScheduler* thread =
 261       new scheduler::WebThreadImplForWorkerScheduler(name);
 262   thread->TaskRunner()->PostTask(
 263       FROM_HERE, base::Bind(&BlinkPlatformImpl::UpdateWebThreadTLS,
 264                             base::Unretained(this), thread));
 265   return thread;
 266 }
 267
 268 blink::WebThread* BlinkPlatformImpl::currentThread() {
 269   if (main_thread_->isCurrentThread())
 270     return main_thread_.get();
 271   return static_cast<blink::WebThread*>(current_thread_slot_.Get());
 272 }
 273
 274 void BlinkPlatformImpl::yieldCurrentThread() {
 275   base::PlatformThread::YieldCurrentThread();
 276 }
 277
 278 blink::WebWaitableEvent* BlinkPlatformImpl::createWaitableEvent() {
 279   return new WebWaitableEventImpl();
 280 }
 281
 282 blink::WebWaitableEvent* BlinkPlatformImpl::waitMultipleEvents(
 283     const blink::WebVector<blink::WebWaitableEvent*>& web_events) {
 284   std::vector<base::WaitableEvent*> events;
 285   for (size_t i = 0; i < web_events.size(); ++i)
 286     events.push_back(static_cast<WebWaitableEventImpl*>(web_events[i])->impl());
 287   size_t idx = base::WaitableEvent::WaitMany(
 288       vector_as_array(&events), events.size());
 289   DCHECK_LT(idx, web_events.size());
 290   return web_events[idx];
 291 }
 292
 293 blink::WebGestureCurve* BlinkPlatformImpl::createFlingAnimationCurve(
 294     blink::WebGestureDevice device_source,
 295     const blink::WebFloatPoint& velocity,
 296     const blink::WebSize& cumulative_scroll) {
 297   const bool is_main_thread = true;
 298   return ui::WebGestureCurveImpl::CreateFromDefaultPlatformCurve(
 299              gfx::Vector2dF(velocity.x, velocity.y),
 300              gfx::Vector2dF(cumulative_scroll.width, cumulative_scroll.height),
 301              is_main_thread).release();
 302 }
 303
 304 blink::WebCrypto* BlinkPlatformImpl::crypto() {
 305   return &web_crypto_;
 306 }
 307
 308 blink::WebNotificationManager*
 309 BlinkPlatformImpl::notificationManager() {
 310   return &web_notification_manager_;
 311 }
 312
 313 void BlinkPlatformImpl::UpdateWebThreadTLS(blink::WebThread* thread) {
 314   DCHECK(!current_thread_slot_.Get());
 315   current_thread_slot_.Set(thread);
 316 }
 317
 318 }  // namespace html_viewer