[英]bring firefox window to the front using firefox addon
當我在firefox addon
上運行特定功能時,我想聚焦firefox。我創建了一個可以聚焦firefox
的.vbs文件[帶到頂部],然后我使用nsIProcess
執行該exe。
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);
它工作正常。但是由於某些原因,我想直接從附加代碼中聚焦Firefox,而無需另一個應用程序的幫助。 我閱讀了firefox windows
API,但無論如何我都找不到焦點window。我要問的是如何從插件代碼集中瀏覽器。
編輯..
這是我用來關注firefox的代碼。
focusFirefox.vbs
Set wshShell = CreateObject("WScript.Shell")
wshShell.AppActivate("Firefox")
這些解決方案使用js-ctypes winapi。 這是Windows解決方案。 OSX和Linux沒有這個問題,很容易在那兒搶到重點。
如果我們可以只使用SetForegroundWindow
winapi方法,這將很容易,但是調用此方法的過程必須以用戶為中心。 如果沒有,則它什么都不做,因此可以通過以下方法強制執行此操作:
此方法執行以下操作:
SetForegroundWindow
將正常工作,然后退出 SetForegroundWindow
並退出 AttachThreadInput
將Firefox的線程附加到當前在前台窗口中的線程 SetForegroundWindow
因為它將立即工作 SetForegroundWindow
調用,它將失敗,如通常情況那樣 我想不出AttachThreadInput
失敗的原因,但是如果失敗了,那是此方法唯一AttachThreadInput
部分。 如果有人知道失敗的原因,請針對該失敗原因分享解決方案。 但是,我將SetCursorPos
方法留在下面作為緊急備用。
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);
這是一個使用js-ctypes且僅在Windows操作系統上有效的解決方案,該解決方案執行以下操作:
它有一個問題,即不尊重SendInput
中鼠標單擊的x和y坐標,這就是為什么我必須使用SetCursorPos
的原因,在以后的版本中,我想對此進行修復,以便在移動鼠標時不使用SetCursorPos
用戶鼠標對用戶來說很煩人,但是好處遠遠超過了輕微的煩人,因為它對賦予窗口焦點非常重要,我暫時接受此SetCursorPos
方法,因為我在“竊取前將光標位置恢復到”,因此在這里是:
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);
這是需要的方法,因為如果調用它的進程不是當前關注的進程,則SetForegroundWindow
不會執行任何操作。
經過測試,即使將另一個窗口設置為“始終在頂部”,此方法仍然有效,但是由於另一個窗口始終位於頂部,因此將焦點放在此窗口之后將是最頂部。
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