extensions/browser/mojo/keep_alive_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 "extensions/browser/mojo/keep_alive_impl.h"
   6
   7 #include "base/bind.h"
   8 #include "extensions/browser/extension_registry.h"
   9 #include "extensions/browser/process_manager.h"
  10
  11 namespace extensions {
  12
  13 // static
  14 void KeepAliveImpl::Create(content::BrowserContext* context,
  15                            const Extension* extension,
  16                            mojo::InterfaceRequest<KeepAlive> request) {
  17   new KeepAliveImpl(context, extension, request.Pass());
  18 }
  19
  20 KeepAliveImpl::KeepAliveImpl(content::BrowserContext* context,
  21                              const Extension* extension,
  22                              mojo::InterfaceRequest<KeepAlive> request)
  23     : context_(context),
  24       extension_(extension),
  25       extension_registry_observer_(this),
  26       binding_(this, request.Pass()) {
  27   ProcessManager::Get(context_)->IncrementLazyKeepaliveCount(extension_);
  28   binding_.set_connection_error_handler(
  29       base::Bind(&KeepAliveImpl::OnDisconnected, base::Unretained(this)));
  30   extension_registry_observer_.Add(ExtensionRegistry::Get(context_));
  31 }
  32
  33 KeepAliveImpl::~KeepAliveImpl() = default;
  34
  35 void KeepAliveImpl::OnExtensionUnloaded(
  36     content::BrowserContext* browser_context,
  37     const Extension* extension,
  38     UnloadedExtensionInfo::Reason reason) {
  39   if (browser_context == context_ && extension == extension_)
  40     delete this;
  41 }
  42
  43 void KeepAliveImpl::OnShutdown(ExtensionRegistry* registry) {
  44   delete this;
  45 }
  46
  47 void KeepAliveImpl::OnDisconnected() {
  48   ProcessManager::Get(context_)->DecrementLazyKeepaliveCount(extension_);
  49 }
  50
  51 }  // namespace extensions