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// 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_CHROMEOS_EXTENSIONS_FILE_HANDLER_UTIL_H_
#define CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_HANDLER_UTIL_H_
#pragma once
#include <vector>
#include "base/platform_file.h"
#include "chrome/common/extensions/extension.h"
#include "chrome/common/extensions/url_pattern_set.h"
class Browser;
class ExtensionHost;
class FileBrowserHandler;
class GURL;
class Profile;
namespace file_handler_util {
void UpdateFileHandlerUsageStats(Profile* profile, const std::string& task_id);
// Gets read-write file access permission flags.
int GetReadWritePermissions();
// Gets read-only file access permission flags.
int GetReadOnlyPermissions();
// Generates file task id for the file action specified by the extension.
std::string MakeTaskID(const std::string& extension_id,
const std::string& action_id);
// Make a task id specific to drive apps instead of extensions.
std::string MakeDriveTaskID(const std::string& app_id,
const std::string& action_id);
// Extracts action and extension id bound to the file task.
bool CrackTaskID(const std::string& task_id,
std::string* target_extension_id,
std::string* action_id);
// Struct that keeps track of when a handler was `last used.
// It is used to determine default file action for a file.
struct LastUsedHandler {
LastUsedHandler(int t, const FileBrowserHandler* h, URLPatternSet p)
: timestamp(t),
handler(h),
patterns(p) {
}
int timestamp;
const FileBrowserHandler* handler;
URLPatternSet patterns;
};
typedef std::vector<LastUsedHandler> LastUsedHandlerList;
// Generates list of tasks common for all files in |file_list|.
// The resulting list is sorted by last usage time.
bool FindCommonTasks(Profile* profile,
const std::vector<GURL>& files_list,
LastUsedHandlerList* named_action_list);
// Find the default task for a file whose url is |url|. (The default task is the
// task that is assigned to file browser task button by default).
bool GetDefaultTask(Profile* profile,
const GURL& url,
const FileBrowserHandler** handler);
// Used for returning success or failure from task executions.
typedef base::Callback<void(bool)> FileTaskFinishedCallback;
// Helper class for executing file browser file action.
class FileTaskExecutor : public base::RefCountedThreadSafe<FileTaskExecutor> {
public:
static const char kDriveTaskExtensionPrefix[];
static const size_t kDriveTaskExtensionPrefixLength;
// Creates the appropriate FileTaskExecutor for the given |extension_id|.
static FileTaskExecutor* Create(Profile* profile,
const GURL source_url,
const std::string& extension_id,
const std::string& action_id);
// Same as ExecuteAndNotify, but no notification is performed.
virtual bool Execute(const std::vector<GURL>& file_urls);
// Initiates execution of file handler task for each element of |file_urls|.
// Return |false| if the execution cannot be initiated. Otherwise returns
// |true| and then eventually calls |done| when all the files have
// been handled. If there is an error during processing the list of files, the
// caller will be informed of the failure via |done|, and the rest of
// the files will not be processed.
virtual bool ExecuteAndNotify(const std::vector<GURL>& file_urls,
const FileTaskFinishedCallback& done) = 0;
protected:
explicit FileTaskExecutor(Profile* profile);
virtual ~FileTaskExecutor();
// Returns the profile that this task was created with.
Profile* profile() { return profile_; }
// Returns a browser to use for the current browser.
Browser* GetBrowser() const;
private:
friend class base::RefCountedThreadSafe<FileTaskExecutor>;
Profile* profile_;
};
} // namespace file_handler_util
#endif // CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_HANDLER_UTIL_H_
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