extensions/renderer/lazy_background_page_native_handler.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 "extensions/renderer/lazy_background_page_native_handler.h"
   6
   7 #include "base/bind.h"
   8 #include "content/public/renderer/render_frame.h"
   9 #include "extensions/common/extension_messages.h"
  10 #include "extensions/renderer/extension_frame_helper.h"
  11 #include "extensions/renderer/script_context.h"
  12
  13 namespace extensions {
  14
  15 LazyBackgroundPageNativeHandler::LazyBackgroundPageNativeHandler(
  16     ScriptContext* context)
  17     : ObjectBackedNativeHandler(context) {
  18   RouteFunction(
  19       "IncrementKeepaliveCount",
  20       base::Bind(&LazyBackgroundPageNativeHandler::IncrementKeepaliveCount,
  21                  base::Unretained(this)));
  22   RouteFunction(
  23       "DecrementKeepaliveCount",
  24       base::Bind(&LazyBackgroundPageNativeHandler::DecrementKeepaliveCount,
  25                  base::Unretained(this)));
  26 }
  27
  28 void LazyBackgroundPageNativeHandler::IncrementKeepaliveCount(
  29     const v8::FunctionCallbackInfo<v8::Value>& args) {
  30   if (context() && ExtensionFrameHelper::IsContextForEventPage(context())) {
  31     content::RenderFrame* render_frame = context()->GetRenderFrame();
  32     render_frame->Send(new ExtensionHostMsg_IncrementLazyKeepaliveCount(
  33         render_frame->GetRoutingID()));
  34   }
  35 }
  36
  37 void LazyBackgroundPageNativeHandler::DecrementKeepaliveCount(
  38     const v8::FunctionCallbackInfo<v8::Value>& args) {
  39   if (context() && ExtensionFrameHelper::IsContextForEventPage(context())) {
  40     content::RenderFrame* render_frame = context()->GetRenderFrame();
  41     render_frame->Send(new ExtensionHostMsg_DecrementLazyKeepaliveCount(
  42         render_frame->GetRoutingID()));
  43   }
  44 }
  45
  46 }  // namespace extensions