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1 | (in-package :lisp-on-lines) |
2 | |
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3 | (define-description editable () |
4 | () |
5 | (:mixinp t)) |
6 | |
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7 | (define-layered-class standard-attribute |
8 | :in-layer #.(defining-description 'editable) |
9 | () |
10 | ((edit-attribute-p |
11 | :initform :inherit |
12 | :layered-accessor attribute-editp |
13 | :initarg :editp |
14 | :layered t) |
15 | (setter |
16 | :initarg :setter |
17 | :layered t |
18 | :accessor attribute-setter |
19 | :initform nil) |
20 | (attribute-editor |
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21 | :initarg :editor |
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22 | :layered t |
23 | :accessor attribute-editor |
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24 | :initform (make-instance 'attribute-editor) |
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25 | :documentation "This ones a bit odd"))) |
26 | |
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27 | (defmethod shared-initialize :after ((object standard-attribute) |
28 | slots &rest args &key input &allow-other-keys) |
29 | |
30 | (when input |
31 | (setf (attribute-editor object) |
32 | (apply #'make-instance (find-editor-class input) |
33 | input)))) |
34 | |
35 | |
36 | (defun find-editor-class (spec) |
37 | (let ((class (getf spec :class)) |
38 | (type (getf spec :type))) |
39 | (or class (when |
40 | (and type (symbolp type)) |
41 | (let ((name (format nil "~A-~A" type 'attribute-editor))) |
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42 | (or (unless (eq (find-package :cl) |
43 | (symbol-package type)) |
44 | (find-class (intern name (symbol-package type)) nil)) |
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45 | (find-class (intern name) nil) |
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46 | (find-class (intern name :lol) nil) |
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47 | 'string-attribute-editor)))))) |
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48 | |
49 | (defclass attribute-editor () |
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50 | ((class :initarg :class) |
51 | (type :initarg :type |
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52 | :initform 'string |
53 | :accessor attribute-editor-type) |
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54 | (parser :initarg :parse-using |
55 | :initform 'identity |
56 | :accessor attribute-editor-parsing-function) |
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57 | (attributes :initarg :attributes |
58 | :initform nil |
59 | :accessor attribute-editor-attributes) |
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60 | (prompt :initarg :prompt |
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61 | :initform nil) |
62 | (unbound-value |
63 | :initarg :unbound-value |
64 | :initform ""))) |
65 | |
66 | |
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67 | |
68 | (defclass string-attribute-editor (attribute-editor) ()) |
69 | (defclass text-attribute-editor (string-attribute-editor) ()) |
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70 | |
71 | (deftype password () 'string) |
72 | |
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73 | (defclass password-attribute-editor (string-attribute-editor) ()) |
74 | |
75 | (defclass number-attribute-editor (attribute-editor) () |
76 | (:default-initargs |
77 | :parse-using 'parse-number:PARSE-NUMBER |
78 | :type 'number)) |
79 | |
80 | (defun parse-attribute-value (attribute value) |
81 | (funcall (attribute-editor-parsing-function |
82 | (attribute-editor attribute)) |
83 | value)) |
84 | |
85 | (define-layered-function display-attribute-editor (attribute) |
86 | (:method (attribute) |
87 | (setf (attribute-value attribute) |
88 | (funcall (attribute-editor-parsing-function |
89 | (attribute-editor attribute)) |
90 | (read-line))))) |
91 | |
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92 | (define-description T () |
93 | ((editp :label "Edit by Default?" |
94 | :value nil |
95 | :editp nil) |
96 | (identity :editp nil) |
97 | (type :editp nil) |
98 | (class :editp nil)) |
99 | (:in-description editable)) |
100 | |
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101 | (define-layered-method (setf attribute-value-using-object) |
102 | :in-layer #.(defining-description 'editable)(value object attribute) |
103 | |
104 | (let ((setter (attribute-setter attribute))) |
105 | (if setter |
106 | (funcall setter value object) |
107 | (error "No setter in ~A for ~A" attribute object)))) |
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108 | |
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109 | |
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110 | (define-layered-function attribute-editp (attribute) |
111 | (:method (attribute) nil)) |
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112 | |
113 | (define-layered-method attribute-editp |
114 | :in-layer #.(defining-description 'editable) |
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115 | ((attribute standard-attribute)) |
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116 | (let ((value (attribute-value attribute))) |
117 | (unless (or (unbound-slot-value-p value) |
118 | (typep value |
119 | (attribute-editor-type |
120 | (attribute-editor attribute)))) |
121 | (return-from attribute-editp nil))) |
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122 | (let ((edit? (call-next-method))) |
123 | (if (eq :inherit edit?) |
124 | (attribute-value (find-attribute |
125 | (attribute-description attribute) |
126 | 'editp)) |
127 | edit?))) |
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128 | |
129 | |
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130 | (define-layered-method display-attribute-value |
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131 | :in-layer #.(defining-description 'editable) |
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132 | ((attribute standard-attribute)) |
133 | (if (attribute-editp attribute) |
134 | (display-attribute-editor attribute) |
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135 | (call-next-method))) |
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136 | |
137 | |
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138 | |
139 | |
140 | |
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141 | |