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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_IMPORTER_IMPORTER_LIST_H_
#define CHROME_BROWSER_IMPORTER_IMPORTER_LIST_H_
#pragma once
#include <vector>
#include "base/basictypes.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_vector.h"
#include "base/string16.h"
#include "content/public/browser/browser_thread.h"
#include "net/url_request/url_request_context_getter.h"
namespace importer {
class ImporterListObserver;
struct SourceProfile;
}
class ImporterList : public base::RefCountedThreadSafe<ImporterList> {
public:
explicit ImporterList(net::URLRequestContextGetter* request_context_getter);
// Detects the installed browsers and their associated profiles, then stores
// their information in a list. It returns the list of description of all
// profiles. Calls into DetectSourceProfilesWorker() on the FILE thread to do
// the real work of detecting source profiles. |observer| must be non-NULL.
void DetectSourceProfiles(importer::ImporterListObserver* observer);
// Sets the observer of this object. When the current observer is destroyed,
// this method should be called with a NULL |observer| so it is not notified
// after destruction.
void SetObserver(importer::ImporterListObserver* observer);
// DEPRECATED: This method is synchronous and performs file operations which
// may end up blocking the current thread, which is usually the UI thread.
void DetectSourceProfilesHack();
// Returns the number of different source profiles you can import from.
size_t count() const { return source_profiles_.size(); }
// Returns the SourceProfile at |index|. The profiles are ordered such that
// the profile at index 0 is the likely default browser. The SourceProfile
// should be passed to ImporterHost::StartImportSettings().
const importer::SourceProfile& GetSourceProfileAt(size_t index) const;
// Returns the SourceProfile for the given |importer_type|.
const importer::SourceProfile& GetSourceProfileForImporterType(
int importer_type) const;
private:
friend class base::RefCountedThreadSafe<ImporterList>;
~ImporterList();
// The worker method for DetectSourceProfiles(). Must be called on the FILE
// thread.
void DetectSourceProfilesWorker();
// Called by DetectSourceProfilesWorker() on the source thread. This method
// notifies |observer_| that the source profiles are loaded. |profiles| is
// the vector of loaded profiles.
void SourceProfilesLoaded(
const std::vector<importer::SourceProfile*>& profiles);
// The list of profiles with the default one first.
ScopedVector<importer::SourceProfile> source_profiles_;
// Needed for Google Toolbar Import to connect to Toolbar server.
scoped_refptr<net::URLRequestContextGetter> request_context_getter_;
// The ID of the thread DetectSourceProfiles() is called on. Only valid after
// DetectSourceProfiles() is called and until SourceProfilesLoaded() has
// returned.
content::BrowserThread::ID source_thread_id_;
// Weak reference. Only valid after DetectSourceProfiles() is called and until
// SourceProfilesLoaded() has returned.
importer::ImporterListObserver* observer_;
// True if |observer_| is set during the lifetime of source profile detection.
// This hack is necessary in order to not use |observer_| != NULL as a method
// of determining whether this object is being observed or not.
// TODO(jhawkins): Remove once DetectSourceProfilesHack() is removed.
bool is_observed_;
// True if source profiles are loaded.
bool source_profiles_loaded_;
DISALLOW_COPY_AND_ASSIGN(ImporterList);
};
#endif // CHROME_BROWSER_IMPORTER_IMPORTER_LIST_H_
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