1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_EXTENSIONS_WEBSTORE_INSTALL_HELPER_H_
#define CHROME_BROWSER_EXTENSIONS_WEBSTORE_INSTALL_HELPER_H_
#include <vector>
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "content/public/browser/utility_process_host_client.h"
#include "net/url_request/url_fetcher_delegate.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "url/gurl.h"
class SkBitmap;
namespace base {
class DictionaryValue;
class ListValue;
}
namespace content {
class UtilityProcessHost;
}
namespace net {
class URLFetcher;
class URLRequestContextGetter;
}
namespace extensions {
// This is a class to help dealing with webstore-provided data. It manages
// sending work to the utility process for parsing manifests and
// fetching/decoding icon data. Clients must implement the
// WebstoreInstallHelper::Delegate interface to receive the parsed data.
class WebstoreInstallHelper : public content::UtilityProcessHostClient,
public net::URLFetcherDelegate {
public:
class Delegate {
public:
enum InstallHelperResultCode {
UNKNOWN_ERROR,
ICON_ERROR,
MANIFEST_ERROR
};
// Called when we've successfully parsed the manifest and decoded the icon
// in the utility process. Ownership of parsed_manifest is transferred.
virtual void OnWebstoreParseSuccess(
const std::string& id,
const SkBitmap& icon,
base::DictionaryValue* parsed_manifest) = 0;
// Called to indicate a parse failure. The |result_code| parameter should
// indicate whether the problem was with the manifest or icon.
virtual void OnWebstoreParseFailure(
const std::string& id,
InstallHelperResultCode result_code,
const std::string& error_message) = 0;
protected:
virtual ~Delegate() {}
};
// Only one of |icon_data| (based64-encoded icon data) or |icon_url| can be
// specified, but it is legal for both to be empty.
WebstoreInstallHelper(Delegate* delegate,
const std::string& id,
const std::string& manifest,
const std::string& icon_data,
const GURL& icon_url,
net::URLRequestContextGetter* context_getter);
void Start();
private:
virtual ~WebstoreInstallHelper();
void StartWorkOnIOThread();
void StartFetchedImageDecode();
void ReportResultsIfComplete();
void ReportResultFromUIThread();
// Implementing the net::URLFetcherDelegate interface.
virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
// Implementing pieces of the UtilityProcessHostClient interface.
virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
// Message handlers.
void OnDecodeImageSucceeded(const SkBitmap& decoded_image);
void OnDecodeImageFailed();
void OnJSONParseSucceeded(const base::ListValue& wrapper);
void OnJSONParseFailed(const std::string& error_message);
// The client who we'll report results back to.
Delegate* delegate_;
// The extension id of the manifest we're parsing.
std::string id_;
// The manifest to parse.
std::string manifest_;
// Only one of these should be non-empty. If |icon_base64_data_| is non-emtpy,
// it's a base64-encoded string that needs to be parsed into an SkBitmap. If
// |icon_url_| is non-empty, it needs to be fetched and decoded into an
// SkBitmap.
std::string icon_base64_data_;
GURL icon_url_;
std::vector<unsigned char> fetched_icon_data_;
// For fetching the icon, if needed.
scoped_ptr<net::URLFetcher> url_fetcher_;
net::URLRequestContextGetter* context_getter_; // Only usable on UI thread.
base::WeakPtr<content::UtilityProcessHost> utility_host_;
// Flags for whether we're done doing icon decoding and manifest parsing.
bool icon_decode_complete_;
bool manifest_parse_complete_;
// The results of succesful decoding/parsing.
SkBitmap icon_;
scoped_ptr<base::DictionaryValue> parsed_manifest_;
// A details string for keeping track of any errors.
std::string error_;
// A code to distinguish between an error with the icon, and an error with the
// manifest.
Delegate::InstallHelperResultCode parse_error_;
};
} // namespace extensions
#endif // CHROME_BROWSER_EXTENSIONS_WEBSTORE_INSTALL_HELPER_H_
|
