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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 define-description-attribute |
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8 | :in-layer #.(defining-description 'editable) |
9 | () |
10 | ((edit-attribute-p |
11 | :initform :inherit |
12 | :layered-accessor attribute-editp |
13 | :initarg :editp |
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14 | :layered t |
15 | :special t) |
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16 | (setter |
17 | :initarg :setter |
18 | :layered t |
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19 | :layered-accessor attribute-setter |
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20 | :initform nil) |
21 | (attribute-editor |
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22 | :initarg :editor |
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23 | :layered t |
24 | :accessor attribute-editor |
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25 | :initform (make-instance 'attribute-editor) |
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26 | :documentation "This ones a bit odd"))) |
27 | |
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28 | (define-layered-method attribute-setter (object) |
29 | nil) |
30 | |
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31 | (defmethod shared-initialize :after ((object standard-attribute) |
32 | slots &rest args &key input &allow-other-keys) |
33 | |
34 | (when input |
35 | (setf (attribute-editor object) |
36 | (apply #'make-instance (find-editor-class input) |
37 | input)))) |
38 | |
39 | |
40 | (defun find-editor-class (spec) |
41 | (let ((class (getf spec :class)) |
42 | (type (getf spec :type))) |
43 | (or class (when |
44 | (and type (symbolp type)) |
45 | (let ((name (format nil "~A-~A" type 'attribute-editor))) |
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46 | (or (unless (eq (find-package :cl) |
47 | (symbol-package type)) |
48 | (find-class (intern name (symbol-package type)) nil)) |
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49 | (find-class (intern name) nil) |
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50 | (find-class (intern name :lol) nil) |
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51 | 'string-attribute-editor)))))) |
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52 | |
53 | (defclass attribute-editor () |
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54 | ((class :initarg :class) |
55 | (type :initarg :type |
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56 | :initform 'string |
57 | :accessor attribute-editor-type) |
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58 | (parser :initarg :parse-using |
59 | :initform 'identity |
60 | :accessor attribute-editor-parsing-function) |
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61 | (attributes :initarg :attributes |
62 | :initform nil |
63 | :accessor attribute-editor-attributes) |
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64 | (prompt :initarg :prompt |
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65 | :initform nil) |
66 | (unbound-value |
67 | :initarg :unbound-value |
68 | :initform ""))) |
69 | |
70 | |
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71 | |
72 | (defclass string-attribute-editor (attribute-editor) ()) |
73 | (defclass text-attribute-editor (string-attribute-editor) ()) |
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74 | |
75 | (deftype password () 'string) |
76 | |
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77 | (defclass password-attribute-editor (string-attribute-editor) ()) |
78 | |
79 | (defclass number-attribute-editor (attribute-editor) () |
80 | (:default-initargs |
81 | :parse-using 'parse-number:PARSE-NUMBER |
82 | :type 'number)) |
83 | |
84 | (defun parse-attribute-value (attribute value) |
85 | (funcall (attribute-editor-parsing-function |
86 | (attribute-editor attribute)) |
87 | value)) |
88 | |
89 | (define-layered-function display-attribute-editor (attribute) |
90 | (:method (attribute) |
91 | (setf (attribute-value attribute) |
92 | (funcall (attribute-editor-parsing-function |
93 | (attribute-editor attribute)) |
94 | (read-line))))) |
95 | |
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96 | (define-description T () |
97 | ((editp :label "Edit by Default?" |
98 | :value nil |
99 | :editp nil) |
100 | (identity :editp nil) |
101 | (type :editp nil) |
102 | (class :editp nil)) |
103 | (:in-description editable)) |
104 | |
b7657b86 |
105 | (define-layered-method (setf attribute-value-using-object) |
106 | :in-layer #.(defining-description 'editable)(value object attribute) |
107 | |
108 | (let ((setter (attribute-setter attribute))) |
109 | (if setter |
110 | (funcall setter value object) |
111 | (error "No setter in ~A for ~A" attribute object)))) |
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112 | |
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113 | |
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114 | (define-layered-function attribute-editp (attribute) |
115 | (:method (attribute) nil)) |
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116 | |
117 | (define-layered-method attribute-editp |
118 | :in-layer #.(defining-description 'editable) |
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119 | ((attribute standard-attribute)) |
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120 | (let ((value (attribute-value attribute))) |
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121 | (unless (or (unbound-slot-value-p value) |
122 | (typep value |
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123 | (attribute-editor-type |
124 | (attribute-editor attribute)))) |
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125 | (return-from attribute-editp nil))) |
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126 | (let ((edit? (call-next-method))) |
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127 | |
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128 | (if (eq :inherit edit?) |
129 | (attribute-value (find-attribute |
130 | (attribute-description attribute) |
131 | 'editp)) |
132 | edit?))) |
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133 | |
134 | |
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135 | (define-layered-method display-attribute-value |
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136 | :in-layer #.(defining-description 'editable) |
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137 | ((attribute standard-attribute)) |
138 | (if (attribute-editp attribute) |
139 | (display-attribute-editor attribute) |
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140 | (call-next-method))) |
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141 | |
142 | |
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143 | |
144 | |
145 | |
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146 | |