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// Copyright (c) 2011 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_UI_WEBUI_SCREENSHOT_SOURCE_H_
#define CHROME_BROWSER_UI_WEBUI_SCREENSHOT_SOURCE_H_
#include <map>
#include <string>
#include <vector>
#include "base/basictypes.h"
#include "base/memory/linked_ptr.h"
#include "chrome/browser/ui/webui/chrome_url_data_manager.h"
#if defined(OS_CHROMEOS)
#include "chrome/browser/chromeos/drive/drive_resource_metadata.h"
#include "chrome/browser/chromeos/login/user_manager.h"
#include "chrome/browser/google_apis/gdata_errorcode.h"
#endif
typedef std::vector<unsigned char> ScreenshotData;
typedef linked_ptr<ScreenshotData> ScreenshotDataPtr;
class FilePath;
class Profile;
// ScreenshotSource is the data source that serves screenshots (saved
// or current) to the bug report html ui.
class ScreenshotSource : public ChromeURLDataManager::DataSource {
public:
explicit ScreenshotSource(
std::vector<unsigned char>* current_screenshot,
Profile* profile);
#if defined(USE_ASH)
// Queries the browser process to determine if screenshots are disabled.
static bool AreScreenshotsDisabled();
// Common access for the screenshot directory, parameter is set to the
// requested directory and return value of true is given upon success.
static bool GetScreenshotDirectory(FilePath* directory);
#endif
// Get the basefilename for screenshots
static std::string GetScreenshotBaseFilename();
// Called when the network layer has requested a resource underneath
// the path we registered.
virtual void StartDataRequest(const std::string& path,
bool is_incognito,
int request_id) OVERRIDE;
virtual std::string GetMimeType(const std::string&) const OVERRIDE;
// Get the screenshot specified by the given relative path that we've cached
// from a previous request to the screenshots source.
// Note: This method strips the query string from the given path.
ScreenshotDataPtr GetCachedScreenshot(const std::string& screenshot_path);
// Url that represents the base directory for screenshots.
static const char kScreenshotUrlRoot[];
// Identifier for the current screenshot
// (relative to screenshot base directory).
static const char kScreenshotCurrent[];
// Path for directory where screenshots are saved
// (relative to screenshot base directory).
static const char kScreenshotSaved[];
#if defined(OS_CHROMEOS)
// Common prefix to screenshot filenames.
static const char kScreenshotPrefix[];
// Common suffix to screenshot filenames.
static const char kScreenshotSuffix[];
#endif
private:
virtual ~ScreenshotSource();
// Send the screenshot specified by the given relative path to the requestor.
// This is the ancestor for SendSavedScreenshot and CacheAndSendScreenshot.
// All calls to send a screenshot should only call this method.
// Note: This method strips the query string from the given path.
void SendScreenshot(const std::string& screenshot_path, int request_id);
#if defined(OS_CHROMEOS)
// Send a saved screenshot image file specified by the given screenshot path
// to the requestor.
void SendSavedScreenshot(const std::string& screenshot_path,
int request_id,
const FilePath& file);
// The callback for Drive's getting file method.
void GetSavedScreenshotCallback(const std::string& screenshot_path,
int request_id,
drive::DriveFileError error,
const FilePath& file,
const std::string& unused_mime_type,
drive::DriveFileType file_type);
#endif
// Sends the screenshot data to the requestor while caching it locally to the
// class instance, indexed by path.
void CacheAndSendScreenshot(const std::string& screenshot_path,
int request_id,
ScreenshotDataPtr bytes);
// Pointer to the screenshot data for the current screenshot.
ScreenshotDataPtr current_screenshot_;
Profile* profile_;
// Key: Relative path to the screenshot (including filename)
// Value: Pointer to the screenshot data associated with the path.
std::map<std::string, ScreenshotDataPtr> cached_screenshots_;
DISALLOW_COPY_AND_ASSIGN(ScreenshotSource);
};
#endif // CHROME_BROWSER_UI_WEBUI_SCREENSHOT_SOURCE_H_
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