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I have an addon that open a html page when you click a button on the browser bar (so far so good) in the html page I have this javascript:

    function new_version_show_window()
        {
            if (prefManager.getCharPref("extensions.mf_unblocker.blocker_version_in_prefs") != this_version)
            {


                gBrowser.selectedTab = gBrowser.addTab("'+this_version+'.html");    
            }
        }

But I am getting the error:

gBrowser is undefined

The javascript is in

chrome://mf_unblocker/content/0_register.html

so I am very much still in the browser extension how do i get it to open a new tab?

Thanks!
Ryan

I have an addon that open a html page when you click a button on the browser bar (so far so good) in the html page I have this javascript:

    function new_version_show_window()
        {
            if (prefManager.getCharPref("extensions.mf_unblocker.blocker_version_in_prefs") != this_version)
            {


                gBrowser.selectedTab = gBrowser.addTab("http://mfre./mf/new_install_'+this_version+'.html");    
            }
        }

But I am getting the error:

gBrowser is undefined

The javascript is in

chrome://mf_unblocker/content/0_register.html

so I am very much still in the browser extension how do i get it to open a new tab?

Thanks!
Ryan

• javascript
• firefox
• tabs
• firefox-addon

Share Improve this question Follow asked Jul 14, 2011 at 23:45 RyanRyan 10k2323 gold badges6868 silver badges103103 bronze badges

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1 Answer 1

Sorted by: Reset to default 11

Try this:

var win = Components.classes['@mozilla/appshell/window-mediator;1']
                  .getService(Components.interfaces.nsIWindowMediator)
                  .getMostRecentWindow('navigator:browser');
                win.gBrowser.selectedTab = win.gBrowser.addTab(url);

Assuming url is the URL to be opened

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