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// Copyright (c) 2006-2008 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_SHELL_INTEGRATION_H__
#define CHROME_BROWSER_SHELL_INTEGRATION_H__
#include <string>
#include "base/basictypes.h"
#include "base/ref_counted.h"
#include "base/string16.h"
#include "googleurl/src/gurl.h"
class FilePath;
class MessageLoop;
class ShellIntegration {
public:
// Sets Chrome as default browser (only for current user). Returns false if
// this operation fails.
static bool SetAsDefaultBrowser();
// On Linux, it may not be possible to determine or set the default browser
// on some desktop environments or configurations. So, we use this enum and
// not a plain bool. (Note however that if used like a bool, this enum will
// have reasonable behavior.)
enum DefaultBrowserState {
NOT_DEFAULT_BROWSER = 0,
IS_DEFAULT_BROWSER,
UNKNOWN_DEFAULT_BROWSER
};
// Attempt to determine if this instance of Chrome is the default browser and
// return the appropriate state. (Defined as being the handler for HTTP/HTTPS
// protocols; we don't want to report "no" here if the user has simply chosen
// to open HTML files in a text editor and FTP links with an FTP client.)
static DefaultBrowserState IsDefaultBrowser();
// Returns true if Firefox is likely to be the default browser for the current
// user. This method is very fast so it can be invoked in the UI thread.
static bool IsFirefoxDefaultBrowser();
#if defined(OS_LINUX)
// Returns filename for .desktop file based on |url|, sanitized for security.
static FilePath GetDesktopShortcutFilename(const GURL& url);
// Returns contents for .desktop file based on |template_contents|, |url|
// and |title|. The |template_contents| should be contents of .desktop file
// used to launch Chrome.
static std::string GetDesktopFileContents(
const std::string& template_contents, const GURL& url,
const string16& title);
struct ShortcutInfo {
GURL url;
string16 title;
bool create_on_desktop;
bool create_in_applications_menu;
};
// Creates a desktop shortcut. It is not guaranteed to exist immediately after
// returning from this function, because actual file operation is done on the
// file thread.
static void CreateDesktopShortcut(const ShortcutInfo& shortcut_info);
#endif // defined(OS_LINUX)
// The current default browser UI state
enum DefaultBrowserUIState {
STATE_PROCESSING,
STATE_NOT_DEFAULT,
STATE_IS_DEFAULT,
STATE_UNKNOWN
};
class DefaultBrowserObserver {
public:
// Updates the UI state to reflect the current default browser state.
virtual void SetDefaultBrowserUIState(DefaultBrowserUIState state) = 0;
virtual ~DefaultBrowserObserver() {}
};
// A helper object that handles checking if Chrome is the default browser on
// Windows and also setting it as the default browser. These operations are
// performed asynchronously on the file thread since registry access is
// involved and this can be slow.
//
class DefaultBrowserWorker
: public base::RefCountedThreadSafe<DefaultBrowserWorker> {
public:
explicit DefaultBrowserWorker(DefaultBrowserObserver* observer);
virtual ~DefaultBrowserWorker() {}
// Checks if Chrome is the default browser.
void StartCheckDefaultBrowser();
// Sets Chrome as the default browser.
void StartSetAsDefaultBrowser();
// Called to notify the worker that the view is gone.
void ObserverDestroyed();
private:
// Functions that track the process of checking if Chrome is the default
// browser. |ExecuteCheckDefaultBrowser| checks the registry on the file
// thread. |CompleteCheckDefaultBrowser| notifies the view to update on the
// UI thread.
void ExecuteCheckDefaultBrowser();
void CompleteCheckDefaultBrowser(DefaultBrowserState state);
// Functions that track the process of setting Chrome as the default
// browser. |ExecuteSetAsDefaultBrowser| updates the registry on the file
// thread. |CompleteSetAsDefaultBrowser| notifies the view to update on the
// UI thread.
void ExecuteSetAsDefaultBrowser();
void CompleteSetAsDefaultBrowser();
// Updates the UI in our associated view with the current default browser
// state.
void UpdateUI(DefaultBrowserState state);
DefaultBrowserObserver* observer_;
MessageLoop* ui_loop_;
MessageLoop* file_loop_;
DISALLOW_COPY_AND_ASSIGN(DefaultBrowserWorker);
};
};
#endif // CHROME_BROWSER_SHELL_INTEGRATION_H__
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