1// Copyright (c) 2011 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 "chrome/browser/automation/automation_resource_tracker.h"
6
7#include "chrome/common/automation_messages.h"
8
9AutomationResourceTrackerImpl::AutomationResourceTrackerImpl(
10    IPC::Message::Sender* sender)
11    : sender_(sender) {
12}
13
14AutomationResourceTrackerImpl::~AutomationResourceTrackerImpl() {
15}
16
17int AutomationResourceTrackerImpl::AddImpl(const void* resource) {
18  if (ContainsResourceImpl(resource))
19    return resource_to_handle_[resource];
20
21  int handle = GenerateHandle();
22  DCHECK(!ContainsHandleImpl(handle));
23
24  resource_to_handle_[resource] = handle;
25  handle_to_resource_[handle] = resource;
26
27  AddObserverTypeProxy(resource);
28
29  return handle;
30}
31
32void AutomationResourceTrackerImpl::RemoveImpl(const void* resource) {
33  if (!ContainsResourceImpl(resource))
34    return;
35
36  int handle = resource_to_handle_[resource];
37  DCHECK_EQ(resource, handle_to_resource_[handle]);
38
39  RemoveObserverTypeProxy(resource);
40
41  resource_to_handle_.erase(resource);
42  handle_to_resource_.erase(handle);
43}
44
45int AutomationResourceTrackerImpl::GenerateHandle() {
46  static int handle = 0;
47  return ++handle;
48}
49
50bool AutomationResourceTrackerImpl::ContainsResourceImpl(const void* resource) {
51  return resource_to_handle_.find(resource) != resource_to_handle_.end();
52}
53
54bool AutomationResourceTrackerImpl::ContainsHandleImpl(int handle) {
55  return handle_to_resource_.find(handle) != handle_to_resource_.end();
56}
57
58const void* AutomationResourceTrackerImpl::GetResourceImpl(int handle) {
59  HandleToResourceMap::const_iterator iter = handle_to_resource_.find(handle);
60  if (iter == handle_to_resource_.end())
61    return NULL;
62
63  return iter->second;
64}
65
66int AutomationResourceTrackerImpl::GetHandleImpl(const void* resource) {
67  ResourceToHandleMap::const_iterator iter =
68    resource_to_handle_.find(resource);
69  if (iter == resource_to_handle_.end())
70    return 0;
71
72  return iter->second;
73}
74
75void AutomationResourceTrackerImpl::HandleCloseNotification(
76    const void* resource) {
77  if (!ContainsResourceImpl(resource))
78    return;
79
80  sender_->Send(
81    new AutomationMsg_InvalidateHandle(resource_to_handle_[resource]));
82
83  RemoveImpl(resource);
84}
85