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// Copyright (c) 2010 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_CHROMEOS_LOGIN_USER_IMAGE_DOWNLOADER_H_
#define CHROME_BROWSER_CHROMEOS_LOGIN_USER_IMAGE_DOWNLOADER_H_
#include <string>
#include <vector>
#include "base/basictypes.h"
#include "base/ref_counted.h"
#include "base/scoped_ptr.h"
#include "chrome/browser/chromeos/login/image_decoder.h"
#include "chrome/common/net/url_fetcher.h"
class ListValue;
namespace chromeos {
// Gets user image URL from user's Google Profile, downloads the image,
// executes image decode and calls UserManager to store image in a file with
// path to it stored in local state dictionary.
class UserImageDownloader : public URLFetcher::Delegate,
public ImageDecoder::Delegate {
public:
// |auth_token| is a authentication token received in ClientLogin
// response, used for requests sent to Contacts API.
// Starts downloading the picture. Object is deleted as reference counted
// object.
UserImageDownloader(const std::string& username,
const std::string& auth_token);
private:
// It's a reference counted object, so destructor is private.
~UserImageDownloader();
// Overriden from URLFetcher::Delegate:
virtual void OnURLFetchComplete(const URLFetcher* source,
const GURL& url,
const URLRequestStatus& status,
int response_code,
const ResponseCookies& cookies,
const std::string& data);
// Overriden from ImageDecoder::Delegate:
virtual void OnImageDecoded(const SkBitmap& decoded_image);
// Parses received JSON data looking for user image url.
// If succeeded, returns true and stores the url in |image_url| parameter.
// Otherwise, returns false.
bool GetImageURL(const std::string& json_data, GURL* image_url) const;
// Searches for image url in a list of contacts matching contact address
// with user email. Returns true and image url if succeeds, false
// otherwise.
bool GetImageURLFromEntries(ListValue* entry_list, GURL* image_url) const;
// Checks if email list contains user email. Returns true if match is
// found.
bool IsUserEntry(ListValue* email_list) const;
// Searches for image url in list of links for the found contact.
// Returns true and image url if succeeds, false otherwise.
bool GetImageURLFromLinks(ListValue* link_list, GURL* image_url) const;
// Encodes user image in PNG format and saves the result to the file
// specified. Should work on IO thread.
void SaveImageAsPNG(const std::string& filename, const SkBitmap& image);
// Fetcher for user's profile page.
scoped_ptr<URLFetcher> profile_fetcher_;
// Username saved to use as a key for user picture in preferences.
std::string username_;
// Authentication token to use for image download.
std::string auth_token_;
DISALLOW_COPY_AND_ASSIGN(UserImageDownloader);
};
} // namespace chromeos
#endif // CHROME_BROWSER_CHROMEOS_LOGIN_USER_IMAGE_DOWNLOADER_H_
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