Question

I’m trying to build a firefox addon & I want to add image/icon in the right click content menu , for example, firebug had an icon in the right click context menu,

I wanna do something similar, my addon also consists of menu items

structure of my addon in context menu :

[icon] [menu] 
            [menu item 1]
            [menu item 2]
            [menu item 3]
            [menu item 4]

How can I do it ?

Answer 1

You have to set the image attribute, give the element the class menu-iconic and store the image so that you can access it.

XUL:

<menu id="someid" label='your label'
          class="menu-iconic"
          image='chrome://addon/skin/image.png'>
...
</menu>

JavaScript:

You can also set or change the image dynamically (get a reference to the element first):

menu.setAttribute('image', 'chrome://addon/skin/image.png');