Hello all,
I have some code that needs to traverse the windows hierarchy. It runs
approximately 20 times slower while Firebug is active.
I don't mind detecting Firebug and tweaking my behavior if it's
unavoidable, but wanted to report this in case it is possible for you
guys to fix.
I wonder what is the reason for the slowdown?
Regards,
Boris
var activateMarkup = function(opt_win) {
var winCount = 0;
var now = new Date().getTime();
walkWindows(window.top, function(w) {
try {
winCount++;
if (!win['activated']) {
var doc = win.document;
// some custom stuff goes here
win['activated'] = true;
}
} catch (e) {
// document not accessible or not ready yet
}
return true; // process all subwindows anyway
});
alert('activateMarkup ' + winCount + ' >' + (new Date().getTime() -
now) + '<');
};
/**
* Walks the window hierarchy starting with the root. Executes fn(win)
for each
* window, and if fn(win) returns true, descends into win's subtree.
*
* @param {Window} root the root window.
* @param {Function} fn the function to execute.
*/
function walkWindows(root, fn) {
if (fn(root)) {
var frames = root['frames'];
var length = frames && frames.length;
for (var i = 0; i < length; i++) {
var frame = frames[i];
if (fn(frame)) {
walkWindows(frame, fn);
}
}
}
}
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