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Undo support for tick tack toe
Annotate for file src/repl.lisp
2009-04-14 tobias
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;;; Copyright 2009 Tobias Rautenkranz
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;;; License: X11 license
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(in-package :qt.examples)
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'
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(defclass repl (qt:widget)
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((model :reader model
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:initform (make-instance 'qt:string-list-model))
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(output :reader output
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:initform (make-instance 'qt:list-view))
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(input :reader input
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:initform (make-instance 'qt:line-edit)))
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(:metaclass cxx:class))
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'
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(defun append-list-model (list-model string)
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"Appends STRING to LIST-MODEL."
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(let ((index (cxx:row-count list-model)))
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(unless (cxx:insert-row list-model index)
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(error "insert-row ~A for ~A failed." index list-model))
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(unless (cxx:set-data list-model (cxx:index list-model index) string)
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(error "set-data failed."))))
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(defmethod initialize-instance :after ((repl repl) &rest args)
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(declare (ignore args))
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(setf (cxx:model (output repl)) (model repl))
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(qt:connect (qt:get-signal (input repl) "returnPressed()")
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#'(lambda ()
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(append-list-model ;; Input
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(model repl)
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(format nil "> ~A" (cxx:text (input repl))))
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(append-list-model ;; return value
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(model repl)
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(write-to-string
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(handler-case (eval (read-from-string
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(cxx:text (input repl))))
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(error (condition) condition))))
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(cxx:clear (input repl))))
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(let ((layout (make-instance 'qt:vbox-layout)))
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(cxx:add-widget layout (output repl))
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(cxx:add-widget layout (input repl))
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(setf (cxx:layout repl) layout))
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(cxx:set-focus (input repl)))
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'
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(defun repl ()
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"Lisp REPL"
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(qt:with-app
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(let ((repl (make-instance 'repl)))
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(cxx:show repl)
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(qt:exec repl))))