BrowserTabGroup.position

Description:

The readonly position attribute gets the tab position of this browser tab group, if the tab group is open. Otherwise, it returns NaN.

Syntax:

readonly unsigned long position

Example:

The following example creates a button on the browser toolbar. When the button is clicked, the position of the first tab group is displayed in the button's badge.

//
// 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",
  badge: {
    backgroundColor: '#cc0000',
    color: '#ffffff'
  }
};

// Create the button and add it to the toolbar.
var button = opera.contexts.toolbar.createItem( UIItemProperties );  
opera.contexts.toolbar.addItem(button);

button.addEventListener('click', handleClick, false);

function handleClick() {
  // Get all tab groups in the current window
  var groups = opera.extension.tabGroups.getAll();
  
  // Display the first group's position in the button's badge
  button.badge.textContent = groups[0].position;
}