When closing multiple tabs, is there any way to get back the option of saving those tabs OR NOT for your next session, within the warning dialogue box itself?

Question

For brief period of time, not in FF4, there was the option whereby when I closed multiple tabs, a firefox dialogue box opened warning me that I'm about to close multiple tabs, '''AND ALSO''' asking me if wanted to save those tabs for my next session, or trash them.
The primary issue IS NOT about saving tabs. The primary question here is about getting THE OPTION back to the CLOSING MULTIPLE TABS WARNING DIALOGUE.
The use case here should be obvious. However, since it is clearly not obvious that different people work in a variety of ways, and neither of those methods of working is "wrong" or "right" I will elaborate: Some people, for whatever reason, it doesn't matter why, want to save all their tabs on some occasions, and on other occasions don't.
This preference varies throughout the day. Therefore it is inefficient to constantly go to preferences and change whether or not I want firefox to open all my tabs from my last session. It is more LOGICAL to place an option in the multiple tab warning dialogue as well, for people whose preference constantly changes.
This option was available for a time in most of the Firefox 3 versions. Is there any way to get back this option in Firefox 4?

Answer 1

Firefox 4 saves the previous session automatically, so there is no need for asking if you want to save the current session.
You can use "Firefox > History > Restore Previous Session" to get the previous session.<br />
There is also a "Restore Previous Session" button on the default <b>about:home</b> Home page.
You can set the warn prefs on the <b>about:config</b> page to <b>true</b> via the right-click context menu or toggle the value with a double left-click.
* browser.showQuitWarning, see http://blog.zpao.com/post/3174360617/about-that-quit-dialog
* browser.tabs.warnOnClose, see http://kb.mozillazine.org/About%3Aconfig_entries
* browser.warnOnQuit , see http://kb.mozillazine.org/browser.warnOnQuit
* browser.warnOnRestart , see http://kb.mozillazine.org/browser.warnOnRestart
To open the <i>about:config</i> page, type <b>about:config</b> in the location (address) bar and press the "<i>Enter</i>" key, just like you type the url of a website to open a website.<br />
If you see a warning then you can confirm that you want to access that page.<br />