1// Copyright (c) 2012 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/extensions/extension_error_reporter.h"
6
7#include "build/build_config.h"
8
9#include "base/bind.h"
10#include "base/bind_helpers.h"
11#include "base/files/file_path.h"
12#include "base/logging.h"
13#include "base/message_loop/message_loop.h"
14#include "base/strings/stringprintf.h"
15#include "base/strings/utf_string_conversions.h"
16#include "chrome/browser/profiles/profile.h"
17#include "chrome/browser/ui/simple_message_box.h"
18#include "content/public/browser/notification_service.h"
19#include "extensions/browser/notification_types.h"
20
21ExtensionErrorReporter* ExtensionErrorReporter::instance_ = NULL;
22
23// static
24void ExtensionErrorReporter::Init(bool enable_noisy_errors) {
25  if (!instance_) {
26    instance_ = new ExtensionErrorReporter(enable_noisy_errors);
27  }
28}
29
30// static
31ExtensionErrorReporter* ExtensionErrorReporter::GetInstance() {
32  CHECK(instance_) << "Init() was never called";
33  return instance_;
34}
35
36ExtensionErrorReporter::ExtensionErrorReporter(bool enable_noisy_errors)
37    : ui_loop_(base::MessageLoop::current()),
38      enable_noisy_errors_(enable_noisy_errors) {
39}
40
41ExtensionErrorReporter::~ExtensionErrorReporter() {}
42
43void ExtensionErrorReporter::ReportLoadError(
44    const base::FilePath& extension_path,
45    const std::string& error,
46    content::BrowserContext* browser_context,
47    bool be_noisy) {
48  content::NotificationService::current()->Notify(
49      extensions::NOTIFICATION_EXTENSION_LOAD_ERROR,
50      content::Source<Profile>(Profile::FromBrowserContext(browser_context)),
51      content::Details<const std::string>(&error));
52
53  std::string path_str = base::UTF16ToUTF8(extension_path.LossyDisplayName());
54  base::string16 message = base::UTF8ToUTF16(
55      base::StringPrintf("Could not load extension from '%s'. %s",
56                         path_str.c_str(),
57                         error.c_str()));
58  ReportError(message, be_noisy);
59  FOR_EACH_OBSERVER(Observer,
60                    observers_,
61                    OnLoadFailure(browser_context, extension_path, error));
62}
63
64void ExtensionErrorReporter::ReportError(const base::string16& message,
65                                         bool be_noisy) {
66  // NOTE: There won't be a ui_loop_ in the unit test environment.
67  if (ui_loop_) {
68    CHECK(base::MessageLoop::current() == ui_loop_)
69        << "ReportError can only be called from the UI thread.";
70  }
71
72  errors_.push_back(message);
73
74  // TODO(aa): Print the error message out somewhere better. I think we are
75  // going to need some sort of 'extension inspector'.
76  LOG(WARNING) << "Extension error: " << message;
77
78  if (enable_noisy_errors_ && be_noisy) {
79    chrome::ShowMessageBox(NULL,
80                           base::ASCIIToUTF16("Extension error"),
81                           message,
82                           chrome::MESSAGE_BOX_TYPE_WARNING);
83  }
84}
85
86const std::vector<base::string16>* ExtensionErrorReporter::GetErrors() {
87  return &errors_;
88}
89
90void ExtensionErrorReporter::ClearErrors() {
91  errors_.clear();
92}
93
94void ExtensionErrorReporter::AddObserver(Observer* observer) {
95  observers_.AddObserver(observer);
96}
97
98void ExtensionErrorReporter::RemoveObserver(Observer* observer) {
99  observers_.RemoveObserver(observer);
100}
101