(module text-box-tool mzscheme
  (require drscheme/tool
           mred
           framework
           "text-snipclass.rkt"
           mzlib/unit
           mzlib/class
           string-constants
           mrlib/include-bitmap)
  
  (provide tool@)

  (define tool@
    (unit 
      (import drscheme:tool^)
      (export drscheme:tool-exports^) 
      (define (phase1) (void))
      (define (phase2) (void))
            
      (define (text-box-mixin %)
        (class %
          (inherit get-insert-menu get-edit-target-object register-capability-menu-item)
          (super-new)
          (new menu-item%
               (label (string-constant insert-text-box-item))
               (parent (get-insert-menu))
               (callback
                (lambda (menu event)
                  (let ([c-box (new text-box%)]
                        [text (get-edit-target-object)])
                    (send text insert c-box)
                    (send text set-caret-owner c-box 'global)))))
          (register-capability-menu-item 'drscheme:special:insert-text-box (get-insert-menu))))
      
      (drscheme:get/extend:extend-unit-frame text-box-mixin)
      
      (drscheme:language:register-capability 'drscheme:special:insert-text-box boolean? #t))))