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// Copyright 2013 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_ERROR_CONSOLE_ERROR_CONSOLE_H_
#define CHROME_BROWSER_EXTENSIONS_ERROR_CONSOLE_ERROR_CONSOLE_H_
#include <vector>
#include "base/gtest_prod_util.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/scoped_vector.h"
#include "base/observer_list.h"
#include "base/strings/string16.h"
#include "base/threading/thread_checker.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"
namespace content {
class NotificationDetails;
class NotificationSource;
class RenderViewHost;
}
class Profile;
namespace extensions {
class ErrorConsoleUnitTest;
class ExtensionError;
// The ErrorConsole is a central object to which all extension errors are
// reported. This includes errors detected in extensions core, as well as
// runtime Javascript errors.
// This class is owned by ExtensionSystem, making it, in effect, a
// BrowserContext-keyed service.
class ErrorConsole : content::NotificationObserver {
public:
typedef ScopedVector<ExtensionError> ErrorList;
typedef std::vector<const ExtensionError*> WeakErrorList;
class Observer {
public:
// Sent when a new error is reported to the error console.
virtual void OnErrorAdded(const ExtensionError* error) = 0;
// Sent upon destruction to allow any observers to invalidate any references
// they have to the error console.
virtual void OnErrorConsoleDestroyed();
};
explicit ErrorConsole(Profile* profile);
virtual ~ErrorConsole();
// Convenience method to return the ErrorConsole for a given profile.
static ErrorConsole* Get(Profile* profile);
// Report an extension error, and add it to the list.
void ReportError(scoped_ptr<ExtensionError> error);
// Get a collection of weak pointers to all errors relating to the extension
// with the given |extension_id|.
WeakErrorList GetErrorsForExtension(const std::string& extension_id) const;
// Remove an error from the list of observed errors.
void RemoveError(const ExtensionError* error);
// Remove all errors from the list of observed errors.
void RemoveAllErrors();
// Add or remove observers of the ErrorConsole to be notified of any errors
// added.
void AddObserver(Observer* observer);
void RemoveObserver(Observer* observer);
const ErrorList& errors() { return errors_; }
private:
FRIEND_TEST_ALL_PREFIXES(ErrorConsoleUnitTest, AddAndRemoveErrors);
// Remove all errors which happened while incognito; we have to do this once
// the incognito profile is destroyed.
void RemoveIncognitoErrors();
// content::NotificationObserver implementation.
virtual void Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) OVERRIDE;
// Needed because ObserverList is not thread-safe.
base::ThreadChecker thread_checker_;
// The list of all observers for the ErrorConsole.
ObserverList<Observer> observers_;
// The errors which we have received so far.
ErrorList errors_;
// The profile with which the ErrorConsole is associated. Only collect errors
// from extensions and RenderViews associated with this Profile (and it's
// incognito fellow).
Profile* profile_;
content::NotificationRegistrar registrar_;
DISALLOW_COPY_AND_ASSIGN(ErrorConsole);
};
} // namespace extensions
#endif // CHROME_BROWSER_EXTENSIONS_ERROR_CONSOLE_ERROR_CONSOLE_H_
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