AngularJS搜索输入框，带有动态和功能图标

I'm learning about AngularJS and effectively what I have is a search box, within that box I want three icons (magnifineglass, a cross and a spinner). The first instance I would like the magnifineglass to appear when the input box is empty, the second instance I would like the spinner to appear when the user has entered some characters into the input box and when the search has gone through the array to output possible searches (just using a timer for this just now) then I would like the "x" to appear in the third instance once the possible searches are returned, which when clicked will clear the field and start over.I'm learning about AngularJS and effectively wh