This documentation relates to Opera's now deprecated .oex Extension API framework for Opera versions <= 12.15 and also provided by our OEX2NEX shim library.
For the latest Opera Extensions API documentation for Opera versions > 12.15 please consult the latest Opera Extensions API documentation online.
The getSelected() method provides a way to obtain the currently selected browser tab, either globally or within the context window or context tab group. The value returned is based on the following algorithm:
None
BrowserTab getSelected ()
The following example creates a button on the browser toolbar. When the button is clicked, the current tab is detected and a tab is then created to the left of it.
//
// The background process (e.g. index.html) 
//
// Specify the properties of the button before creating it.
var UIItemProperties = {
  disabled: false,
  title: "Example extension",
  icon: "images/icon_18.png",
  onclick: function() {
    // Get the current tab as a BrowserTab object
    var thisTab = opera.extension.tabs.getSelected();
    
    // Create a tab with the specified URL
    var tab = opera.extension.tabs.create({url: 'http://dev.opera.com/'}, thisTab);
  }
};
// Create the button and add it to the toolbar.
var button = opera.contexts.toolbar.createItem( UIItemProperties );  
opera.contexts.toolbar.addItem(button);