You can do a selectWindow on the frame which does opens the window. That should modify the window.open on that frame, and it will make it "the window-object selenium is listening to".

dann のブックマーク 2007/12/15 00:00

<blockquote class="hatena-bookmark-comment"><a class="comment-info" href="https://b.hatena.ne.jp/entry/6808125/comment/dann" data-user-id="dann" data-entry-url="https://b.hatena.ne.jp/entry/forums.openqa.org/thread.jspa?threadID=4784&tstart=216" data-original-href="http://forums.openqa.org/thread.jspa?threadID=4784&tstart=216" data-entry-favicon="https://cdn-ak2.favicon.st-hatena.com/64?url=http%3A%2F%2Fforums.openqa.org%2Fthread.jspa%3FthreadID%3D4784%26tstart%3D216" data-user-icon="/users/dann/profile.png">OpenQA: Clearspace: OpenQA</a><ul class="comment-tag" style="list-style: none; margin: 0px;"><li style="float: left">[<a href="https://b.hatena.ne.jp/q/selenium">selenium</a>]</li><li style="float: left">[<a href="https://b.hatena.ne.jp/q/window">window</a>]</li></ul><br><p style="clear: left">You can do a selectWindow on the frame which does opens the window. That should modify the window.open on that frame, and it will make it &quot;the window-object selenium is listening to&quot;.</p><a class="datetime" href="https://b.hatena.ne.jp/dann/20071215#bookmark-6808125"><span class="datetime-body">2007/12/15 00:00</span></a></blockquote><script src="https://b.st-hatena.com/js/comment-widget.js" charset="utf-8" async></script>

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