components/nacl/renderer/progress_event.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/nacl/renderer/progress_event.h"
   6
   7 #include "base/bind.h"
   8 #include "base/location.h"
   9 #include "base/logging.h"
  10 #include "components/nacl/renderer/ppb_nacl_private.h"
  11 #include "content/public/renderer/pepper_plugin_instance.h"
  12 #include "ppapi/shared_impl/ppapi_globals.h"
  13 #include "third_party/WebKit/public/platform/WebString.h"
  14 #include "third_party/WebKit/public/web/WebDOMResourceProgressEvent.h"
  15 #include "third_party/WebKit/public/web/WebDocument.h"
  16 #include "third_party/WebKit/public/web/WebElement.h"
  17 #include "third_party/WebKit/public/web/WebLocalFrame.h"
  18 #include "third_party/WebKit/public/web/WebPluginContainer.h"
  19 #include "v8/include/v8.h"
  20
  21 namespace nacl {
  22
  23 namespace {
  24 blink::WebString EventTypeToString(PP_NaClEventType event_type) {
  25   switch (event_type) {
  26     case PP_NACL_EVENT_LOADSTART:
  27       return blink::WebString::fromUTF8("loadstart");
  28     case PP_NACL_EVENT_PROGRESS:
  29       return blink::WebString::fromUTF8("progress");
  30     case PP_NACL_EVENT_ERROR:
  31       return blink::WebString::fromUTF8("error");
  32     case PP_NACL_EVENT_ABORT:
  33       return blink::WebString::fromUTF8("abort");
  34     case PP_NACL_EVENT_LOAD:
  35       return blink::WebString::fromUTF8("load");
  36     case PP_NACL_EVENT_LOADEND:
  37       return blink::WebString::fromUTF8("loadend");
  38     case PP_NACL_EVENT_CRASH:
  39       return blink::WebString::fromUTF8("crash");
  40   }
  41   NOTIMPLEMENTED();
  42   return blink::WebString();
  43 }
  44
  45 void DispatchProgressEventOnMainThread(PP_Instance instance,
  46                                        const ProgressEvent &event) {
  47   content::PepperPluginInstance* plugin_instance =
  48       content::PepperPluginInstance::Get(instance);
  49   if (!plugin_instance)
  50     return;
  51
  52   blink::WebPluginContainer* container = plugin_instance->GetContainer();
  53   // It's possible that container() is NULL if the plugin has been removed from
  54   // the DOM (but the PluginInstance is not destroyed yet).
  55   if (!container)
  56     return;
  57   blink::WebLocalFrame* frame = container->element().document().frame();
  58   if (!frame)
  59     return;
  60   v8::HandleScope handle_scope(plugin_instance->GetIsolate());
  61   v8::Local<v8::Context> context(
  62       plugin_instance->GetIsolate()->GetCurrentContext());
  63   if (context.IsEmpty()) {
  64     // If there's no JavaScript on the stack, we have to make a new Context.
  65     context = v8::Context::New(plugin_instance->GetIsolate());
  66   }
  67   v8::Context::Scope context_scope(context);
  68
  69   if (!event.resource_url.empty()) {
  70     blink::WebString url_string = blink::WebString::fromUTF8(
  71         event.resource_url.data(), event.resource_url.size());
  72     blink::WebDOMResourceProgressEvent blink_event(
  73         EventTypeToString(event.event_type),
  74         event.length_is_computable,
  75         event.loaded_bytes,
  76         event.total_bytes,
  77         url_string);
  78     container->element().dispatchEvent(blink_event);
  79   } else {
  80     blink::WebDOMProgressEvent blink_event(EventTypeToString(event.event_type),
  81                                            event.length_is_computable,
  82                                            event.loaded_bytes,
  83                                            event.total_bytes);
  84     container->element().dispatchEvent(blink_event);
  85   }
  86 }
  87
  88 }  // namespace
  89
  90 void DispatchProgressEvent(PP_Instance instance, const ProgressEvent &event) {
  91   ppapi::PpapiGlobals::Get()->GetMainThreadMessageLoop()->PostTask(
  92       FROM_HERE,
  93       base::Bind(&DispatchProgressEventOnMainThread, instance, event));
  94 }
  95
  96 }  // namespace nacl