使用 Firefox 插件将 Firefox 窗口带到前面

bring firefox window to the front using firefox addon

本文关键字:Firefox 前面 插件 使用 窗口      更新时间:2023-09-26

我想在firefox addon上运行特定函数时聚焦Firefox .我创建了一个可以聚焦firefox的.vbs文件[带到顶部],然后我使用nsIProcess执行该exe .like like this

file.initWithPath("C:''Users''madhawax''Documents''focusFirefox.vbs");
var process = Cc["@mozilla.org/process/util;1"].createInstance(Ci.nsIProcess);
process.init(file);
process.run(false, args, args.length);

但是现在由于某种原因,我想直接从插件代码中聚焦Firefox,而无需其他应用程序的帮助。 我阅读了 Firefox windows API,但我无论如何都找不到焦点窗口。我要问的是我如何从插件代码聚焦浏览器。

编辑。。

这是我用来关注的代码 火狐 .

focusFirefox.vbs

Set wshShell = CreateObject("WScript.Shell")
wshShell.AppActivate("Firefox")

这些解决方案使用 js-ctypes winapi。这是一个Windows解决方案。OSX和Linux没有这个问题,很容易在那里窃取焦点。

如果我们只做 winapi 方法SetForegroundWindow那会很容易,但是调用此方法的进程必须以用户为中心。如果没有,那么它什么也不做,所以这里有一些强制它的方法:

连接到线程方法(推荐方法(

此方法执行以下操作:

  1. 获取当前位于前台的窗口
  2. 如果没有找到,常规SetForegroundWindow将正常工作,因此它会这样做并退出
  3. 如果前景中的窗口找到它,则获取其线程的 id
  4. 然后,它会将其与当前 Firefox 的线程 ID 进行比较(这是目标窗口线程(
  5. 如果相同,则使用常规SetForegroundWindow并退出
  6. 如果它不一样,那么它使用AttachThreadInput将 Firefox 的线程附加到当前在前台窗口的线程上
  7. 如果在步骤 6 中的调用失败,则它放弃并退出函数,并引发错误
  8. 如果步骤 6 中的调用没有失败,那么它会调用SetForegroundWindow因为它现在可以工作
  9. 然后,它会撤消在步骤 6 中完成的附件,因此如果您现在执行SetForegroundWindow调用,它将像往常一样失败

我想不出会失败的原因AttachThreadInput但如果失败了,那就是这种方法唯一万无一失的部分。如果有人知道为什么会失败,那么请分享该失败原因的解决方案。但是,我将下面的SetCursorPos方法作为紧急回退。

Cu.import('resource://gre/modules/Services.jsm');
Cu.import('resource://gre/modules/ctypes.jsm');
if (ctypes.voidptr_t.size == 4 /* 32-bit */ ) {
    var is64bit = false;
} else if (ctypes.voidptr_t.size == 8 /* 64-bit */ ) {
    var is64bit = true;
} else {
    throw new Error('huh??? not 32 or 64 bit?!?!');
}
var user32 = ctypes.open('user32.dll');
var GetForegroundWindow = user32.declare('GetForegroundWindow', ctypes.winapi_abi,
    ctypes.voidptr_t // return
);
var DWORD = ctypes.uint32_t;
var LPDWORD = DWORD.ptr;
var GetWindowThreadProcessId = user32.declare('GetWindowThreadProcessId', ctypes.winapi_abi,
    DWORD, // return
    ctypes.voidptr_t, // hWnd
    LPDWORD // lpdwProcessId
);
var AttachThreadInput = user32.declare('AttachThreadInput', ctypes.winapi_abi,
    ctypes.bool, // return
    DWORD, // idAttach
    DWORD, // idAttachTo
    ctypes.bool // fAttach
);
var SetForegroundWindow = user32.declare('SetForegroundWindow', ctypes.winapi_abi,
    ctypes.bool, // return BOOL
    ctypes.voidptr_t // HWND
);
function forceFocus() {
    var hToDOMWindow = Services.wm.getMostRecentWindow('navigator:browser');
    if (!hToDOMWindow) {
        throw new Error('No browser window found');
    }
    var hToBaseWindow = hToDOMWindow.QueryInterface(Ci.nsIInterfaceRequestor)
        .getInterface(Ci.nsIWebNavigation)
        .QueryInterface(Ci.nsIDocShellTreeItem)
        .treeOwner
        .QueryInterface(Ci.nsIInterfaceRequestor)
        .getInterface(Ci.nsIBaseWindow);
    var hToString = hToBaseWindow.nativeHandle;
    var hTo = ctypes.voidptr_t(ctypes.UInt64(hToString));

    var hFrom = GetForegroundWindow();
    if (hFrom.isNull()) {
        var rez_SetSetForegroundWindow = SetForegroundWindow(hTo);
        console.log('rez_SetSetForegroundWindow:', rez_SetSetForegroundWindow);
        return true;
    }
    if (hTo.toString() == hFrom.toString()) {
        console.log('window is already focused');
        return true;
    }
    var pid = GetWindowThreadProcessId(hFrom, null);
    console.info('pid:', pid);
    var _threadid = GetWindowThreadProcessId(hTo, null); // _threadid is thread of my firefox id, and hTo is that of my firefox id so this is possible to do
    console.info('_threadid:', _threadid);
    if (pid == _threadid) {
        var rez_SetSetForegroundWindow = SetForegroundWindow(hTo);
        console.log('rez_SetSetForegroundWindow:', rez_SetSetForegroundWindow);
        return true;
    }
    var rez_AttachThreadInput = AttachThreadInput(_threadid, pid, true)
    console.info('rez_AttachThreadInput:', rez_AttachThreadInput);
    if (!rez_AttachThreadInput) {
        throw new Error('failed to attach thread input');
    }
    var rez_SetSetForegroundWindow = SetForegroundWindow(hTo);
    console.log('rez_SetSetForegroundWindow:', rez_SetSetForegroundWindow);
    var rez_AttachThreadInput = AttachThreadInput(_threadid, pid, false)
    console.info('rez_AttachThreadInput:', rez_AttachThreadInput);
}
setTimeout(function() {
    forceFocus();
    user32.close();
}, 5000);

窃取然后恢复光标位置方法(不推荐的方法 - 不是万无一失的,并且因为它模拟单击 - 如果用户全屏有窗口并且链接位于窗口的位置 0,0,它可能会单击链接之类的内容(

这是一个使用 js-ctypes 并且仅适用于 Windows 操作系统的解决方案,它执行以下操作:

  1. 将目标窗口设置为"始终位于顶部"(但焦点尚未在窗口中(
  2. 获取当前光标位置
  3. 将光标位置设置为窗口的左上角
  4. 点击以使其聚焦
  5. 将光标位置恢复到原来的位置
  6. 将窗口设置回正常(不是"始终位于顶部"(

它有一个问题,即SendInput中合成鼠标单击的 x 和 y 坐标没有得到尊重,这就是为什么我不得不使用 SetCursorPos ,在未来的修订版中,我想解决这个问题,这样它就不会使用 SetCursorPos 因为移动用户鼠标对用户来说很烦人, 但是好处远远超过轻微的烦恼,因为给窗口焦点非常重要,我暂时接受这个SetCursorPos方法,因为我做了一个"在窃取之前恢复光标位置",所以这里是:

Cu.import('resource://gre/modules/Services.jsm');
Cu.import('resource://gre/modules/ctypes.jsm');
function myFocus() {
    //////// START Ctypes DECLARES
    if (ctypes.voidptr_t.size == 4 /* 32-bit */ ) {
        var is64bit = false;
    } else if (ctypes.voidptr_t.size == 8 /* 64-bit */ ) {
        var is64bit = true;
    } else {
        throw new Error('huh??? not 32 or 64 bit?!?!');
    }
    var user32 = ctypes.open('user32.dll');
    var SetWindowPos = user32.declare('SetWindowPos', ctypes.winapi_abi,
        ctypes.bool, //return
        ctypes.voidptr_t, //hwnd
        ctypes.voidptr_t, //hWndInsertAfter
        ctypes.int, //X
        ctypes.int, //Y
        ctypes.int, //cx
        ctypes.int, //cy
        ctypes.unsigned_int //uFlags
    );
    var RECT = ctypes.StructType('_RECT', [
        {left: ctypes.long},
        {top: ctypes.long},
        {right: ctypes.long},
        {bottom: ctypes.long}
    ]);
    var LPRECT = RECT.ptr;
    var GetWindowRect = user32.declare('GetWindowRect', ctypes.winapi_abi,
        ctypes.bool, // return
        ctypes.voidptr_t, // hwnd
        LPRECT // lpRect
    );
    var SetCursorPos = user32.declare('SetCursorPos', ctypes.winapi_abi,
        ctypes.bool, // return
        ctypes.int, // x
        ctypes.int // y
    );
    var POINT = ctypes.StructType('_tagPoint', [
        {x: ctypes.long},
        {y: ctypes.long}
    ]);
    var LPPOINT = POINT.ptr;
    var GetCursorPos = user32.declare('GetCursorPos', ctypes.winapi_abi,
        ctypes.bool, // return
        LPPOINT // lpPoint
    );
    // send mouse stuff
    var ULONG_PTR = is64bit ? ctypes.uint64_t : ctypes.unsigned_long;
    var DWORD = ctypes.uint32_t;
    var MOUSEINPUT = ctypes.StructType('tagMOUSEINPUT', [
        {'dx': ctypes.long},
        {'dy': ctypes.long},
        {'mouseData': DWORD},
        {'dwFlags': DWORD},
        {'time': ULONG_PTR},
        {'dwExtraInfo': DWORD}
    ]);
    var INPUT = ctypes.StructType('tagINPUT', [
        {'type': DWORD},
        {'mi': MOUSEINPUT} // union, pick which one you want, we want keyboard input
    ]);
    var LPINPUT = INPUT.ptr;
    var SendInput = user32.declare('SendInput', ctypes.winapi_abi, ctypes.unsigned_int, ctypes.unsigned_int, LPINPUT, ctypes.int);
    var INPUT_MOUSE = 0;
    var MOUSEEVENTF_LEFTDOWN = 2;
    var MOUSEEVENTF_LEFTUP = 4;
    var MOUSEEVENTF_ABSOLUTE = 0x8000;
    // end send mouse stuff
    var HWND_TOP = ctypes.voidptr_t(-1); //ctypes.cast(ctypes.int(-1), ctypes.voidptr_t);
    var HWND_NOTOPMOST = ctypes.voidptr_t(-2);
    var SWP_NOMOVE = 2;
    var SWP_NOSIZE = 1;
    //////// END Ctypes DECLARES

    // pick a one of our navigator:browser firefox windows to focus
    var browserWindow = Services.wm.getMostRecentWindow('navigator:browser');
    if (!browserWindow) {
        throw new Error('No browser window found');
    }
    // convert our DOMWindow to a HWND
    var baseWindow = browserWindow.QueryInterface(Ci.nsIInterfaceRequestor)
        .getInterface(Ci.nsIWebNavigation)
        .QueryInterface(Ci.nsIDocShellTreeItem)
        .treeOwner
        .QueryInterface(Ci.nsIInterfaceRequestor)
        .getInterface(Ci.nsIBaseWindow);
    var hwndString = baseWindow.nativeHandle;
    var hwnd = ctypes.voidptr_t(ctypes.UInt64(hwndString));

    browserWindow.focus(); // this is important, withou this, i dont know why, but the window will not become "always on top" from the SetWindowPos code on the next line
    var rez_SetWindowPos = SetWindowPos(hwnd, HWND_TOP, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE);
    console.log('rez_SetWindowPos:', rez_SetWindowPos);
    var myRect = RECT();
    var rez_GetWindowRect = GetWindowRect(hwnd, myRect.address());
    console.log('rez_SetWindowPos:', rez_SetWindowPos);
    var myRectLeft = parseInt(myRect.left.toString());
    var myRectTop = parseInt(myRect.top.toString());
    console.log('myRect.left', myRectLeft);
    console.log('myRect.top', myRectTop);
    var myPoint = POINT();
    var rez_GetCursorPos = GetCursorPos(myPoint.address());
    console.log('rez_GetCursorPos:', rez_GetCursorPos);
    var myPointX = parseInt(myPoint.x.toString());
    var myPointY = parseInt(myPoint.y.toString());
    console.log('myPoint.x', myPointX);
    console.log('myPoint.y', myPointY);
    var rez_SetCursorPos = SetCursorPos(myRect.left, myRect.top);
    console.log('rez_SetWindowPos:', rez_SetWindowPos);
    // may need to wait for the window to come to top
    // send click - i dont know why but the x and y coords of these send clicks is not being respected, it is just clicking where the mouse is, so im having to use SetCursorPos as temp hack
    var js_pInputs = [
        INPUT(INPUT_MOUSE, MOUSEINPUT(myRectLeft, myRectTop, 0, MOUSEEVENTF_LEFTDOWN | MOUSEEVENTF_ABSOLUTE, 0, 0)),
        INPUT(INPUT_MOUSE, MOUSEINPUT(myRectLeft, myRectTop, 0, MOUSEEVENTF_LEFTUP | MOUSEEVENTF_ABSOLUTE, 0, 0))
    ];
    var pInputs = INPUT.array()(js_pInputs);
    var rez_SI = SendInput(pInputs.length, pInputs, INPUT.size);
    console.log('rez_SI:', rez_SI.toString());
    // end send click
    var rez_SetCursorPos = SetCursorPos(myPoint.x, myPoint.y);
    console.log('rez_SetWindowPos:', rez_SetWindowPos);
    var rez_SetWindowPos = SetWindowPos(hwnd, HWND_NOTOPMOST, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE);
    console.log('rez_SetWindowPos:', rez_SetWindowPos);
    user32.close();
}
setTimeout(function() {
    myFocus();
}, 5000);

这是需要的方法,因为如果调用它的进程不是当前关注的进程,SetForegroundWindow什么也不做。

经过测试,即使另一个窗口设置为"始终在顶部

",这也有效,但由于另一个窗口始终位于顶部,因此在聚焦此窗口后,这将是最顶层的窗口。