gecko/widget/windows/WinUtils.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2011
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Masayuki Nakano <masayuki@d-toybox.com>
*
* Original nsWindow.cpp Contributor(s):
* Robert O'Callahan <roc+moz@cs.cmu.edu>
* Dean Tessman <dean_tessman@hotmail.com>
* Makoto Kato <m_kato@ga2.so-net.ne.jp>
* Dainis Jonitis <Dainis_Jonitis@swh-t.lv>
* Masayuki Nakano <masayuki@d-toybox.com>
* Ningjie Chen <chenn@email.uc.edu>
* Jim Mathies <jmathies@mozilla.com>.
* Mats Palmgren <matspal@gmail.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef mozilla_widget_WinUtils_h__
#define mozilla_widget_WinUtils_h__
#include "nscore.h"
#include <windows.h>
#include <shobjidl.h>
#include "nsAutoPtr.h"
#include "nsString.h"
class nsWindow;
namespace mozilla {
namespace widget {
class WinUtils {
public:
enum WinVersion {
WINXP_VERSION = 0x501,
WIN2K3_VERSION = 0x502,
VISTA_VERSION = 0x600,
// WIN2K8_VERSION = VISTA_VERSION,
WIN7_VERSION = 0x601
// WIN2K8R2_VERSION = WIN7_VERSION
// WIN8_VERSION = 0x602
};
static WinVersion GetWindowsVersion();
/**
* Gets the value of a string-typed registry value.
*
* @param aRoot The registry root to search in.
* @param aKeyName The name of the registry key to open.
* @param aValueName The name of the registry value in the specified key whose
* value is to be retrieved. Can be null, to retrieve the key's unnamed/
* default value.
* @param aBuffer The buffer into which to store the string value. Can be
* null, in which case the return value indicates just whether the value
* exists.
* @param aBufferLength The size of aBuffer, in bytes.
* @return Whether the value exists and is a string.
*/
static bool GetRegistryKey(HKEY aRoot,
const PRUnichar* aKeyName,
const PRUnichar* aValueName,
PRUnichar* aBuffer,
DWORD aBufferLength);
/**
* Checks whether the registry key exists in either 32bit or 64bit branch on
* the environment.
*
* @param aRoot The registry root of aName.
* @param aKeyName The name of the registry key to check.
* @return TRUE if it exists and is readable. Otherwise, FALSE.
*/
static bool HasRegistryKey(HKEY aRoot,
const PRUnichar* aKeyName);
/**
* GetTopLevelHWND() returns a window handle of the top level window which
* aWnd belongs to. Note that the result may not be our window, i.e., it
* may not be managed by nsWindow.
*
* See follwing table for the detail of the result window type.
*
* +-------------------------+-----------------------------------------------+
* | | aStopIfNotPopup |
* +-------------------------+-----------------------+-----------------------+
* | | TRUE | FALSE |
+ +-----------------+-------+-----------------------+-----------------------+
* | | | * an independent top level window |
* | | TRUE | * a pupup window (WS_POPUP) |
* | | | * an owned top level window (like dialog) |
* | aStopIfNotChild +-------+-----------------------+-----------------------+
* | | | * independent window | * only an independent |
* | | FALSE | * non-popup-owned- | top level window |
* | | | window like dialog | |
* +-----------------+-------+-----------------------+-----------------------+
*/
static HWND GetTopLevelHWND(HWND aWnd,
bool aStopIfNotChild = false,
bool aStopIfNotPopup = true);
/**
* SetNSWindowPtr() associates an nsWindow to aWnd. If aWindow is NULL,
* it dissociate any nsWindow pointer from aWnd.
* GetNSWindowPtr() returns an nsWindow pointer which was associated by
* SetNSWindowPtr().
*/
static bool SetNSWindowPtr(HWND aWnd, nsWindow* aWindow);
static nsWindow* GetNSWindowPtr(HWND aWnd);
/**
* GetMonitorCount() returns count of monitors on the environment.
*/
static PRInt32 GetMonitorCount();
/**
* IsOurProcessWindow() returns TRUE if aWnd belongs our process.
* Otherwise, FALSE.
*/
static bool IsOurProcessWindow(HWND aWnd);
/**
* FindOurProcessWindow() returns the nearest ancestor window which
* belongs to our process. If it fails to find our process's window by the
* top level window, returns NULL. And note that this is using ::GetParent()
* for climbing the window hierarchy, therefore, it gives up at an owned top
* level window except popup window (e.g., dialog).
*/
static HWND FindOurProcessWindow(HWND aWnd);
/**
* FindOurWindowAtPoint() returns the topmost child window which belongs to
* our process's top level window.
*
* NOTE: the topmost child window may NOT be our process's window like a
* plugin's window.
*/
static HWND FindOurWindowAtPoint(const POINT& aPointInScreen);
/**
* InitMSG() returns an MSG struct which was initialized by the params.
* Don't trust the other members in the result.
*/
static MSG InitMSG(UINT aMessage, WPARAM wParam, LPARAM lParam);
/**
* GetScanCode() returns a scan code for the LPARAM of WM_KEYDOWN, WM_KEYUP,
* WM_CHAR and WM_UNICHAR.
*
*/
static WORD GetScanCode(LPARAM aLParam)
{
return (aLParam >> 16) & 0xFF;
}
/**
* IsExtendedScanCode() returns TRUE if the LPARAM indicates the key message
* is an extended key event.
*/
static bool IsExtendedScanCode(LPARAM aLParam)
{
return (aLParam & 0x1000000) != 0;
}
/**
* GetInternalMessage() converts a native message to an internal message.
* If there is no internal message for the given native message, returns
* the native message itself.
*/
static UINT GetInternalMessage(UINT aNativeMessage);
/**
* GetNativeMessage() converts an internal message to a native message.
* If aInternalMessage is a native message, returns the native message itself.
*/
static UINT GetNativeMessage(UINT aInternalMessage);
/**
* GetMouseInputSource() returns a pointing device information. The value is
* one of nsIDOMMouseEvent::MOZ_SOURCE_*. This method MUST be called during
* mouse message handling.
*/
static PRUint16 GetMouseInputSource();
/**
* SHCreateItemFromParsingName() calls native SHCreateItemFromParsingName()
* API. Note that you must call VistaCreateItemFromParsingNameInit() before
* calling this. And the result must be TRUE. Otherwise, returns E_FAIL.
*/
static HRESULT SHCreateItemFromParsingName(PCWSTR pszPath, IBindCtx *pbc,
REFIID riid, void **ppv);
/**
* GetShellItemPath return the file or directory path of a shell item.
* Internally calls IShellItem's GetDisplayName.
*
* aItem the shell item containing the path.
* aResultString the resulting string path.
* returns true if a path was retreived.
*/
static bool GetShellItemPath(IShellItem* aItem,
nsString& aResultString);
private:
typedef HRESULT (WINAPI * SHCreateItemFromParsingNamePtr)(PCWSTR pszPath,
IBindCtx *pbc,
REFIID riid,
void **ppv);
static SHCreateItemFromParsingNamePtr sCreateItemFromParsingName;
/**
* VistaCreateItemFromParsingNameInit() initializes the static pointer for
* SHCreateItemFromParsingName() API which is usable only on Vista and later.
* This returns TRUE if the API is available. Otherwise, FALSE.
*/
static bool VistaCreateItemFromParsingNameInit();
};
} // namespace widget
} // namespace mozilla
#endif // mozilla_widget_WinUtils_h__