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Enumerating tabbrowser tabs

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Revision as of 23:59, 27 April 2005
Asqueella (Talk | contribs)
(linkify nsIWindowMediator)
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Revision as of 00:52, 11 March 2006
Asqueella (Talk | contribs)
("l" looks like "1", replace with "num")
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<li>Now use <code>gBrowser.mPanelContainer.childNodes.length</code> to get the number of open tabs. Then use <code>gBrowser.getBrowserAtIndex()</code> to get a <code><browser></code> element. For example: <li>Now use <code>gBrowser.mPanelContainer.childNodes.length</code> to get the number of open tabs. Then use <code>gBrowser.getBrowserAtIndex()</code> to get a <code><browser></code> element. For example:
-<pre>var l = gBrowser.mPanelContainer.childNodes.length;+<pre>var num = gBrowser.mPanelContainer.childNodes.length;
-for(var i = 0; i < l; i++) {+for(var i = 0; i < num; i++) {
var b = gBrowser.getBrowserAtIndex(i); var b = gBrowser.getBrowserAtIndex(i);
try { try {

Revision as of 00:52, 11 March 2006

This page is part of the extension development documentation project.

Ask your questions in MozillaZine Forums. Also try browsing example code.

Note: development documentation is in process of being moved to Mozilla Development Center (MDC).

  • To go through all open tabs in a browser, you first need to get a reference to browser's window. If your code is executed from a browser.xul (in Firefox) overlay (for example it is a toolbar button or menu click handler), you can access current window via window pre-defined variable. If your code is executed from its own window (for example, Settings dialog), you can use nsIWindowMediator to get it.
  • Then you need to get the <tabbrowser> element. You can get it with win.gBrowser, where win is the browser's window from the previous step. You can use just gBrowser instead of window.gBrowser, if running from browser.xul overlay.
  • Now use gBrowser.mPanelContainer.childNodes.length to get the number of open tabs. Then use gBrowser.getBrowserAtIndex() to get a <browser> element. For example:
    var num = gBrowser.mPanelContainer.childNodes.length;
    for(var i = 0; i < num; i++) {
      var b = gBrowser.getBrowserAtIndex(i);
      try {
        dump(b.currentURI.spec); // dump URLs of all open tabs to console
      } catch(e) {}
    }

To learn what methods are available for <browser> and <tabbrowser> elements, use DOM Inspector or look in browser.xml and tabbrowser.xml for corresponding XBL bindings.