| // 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_ |