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view framework/env/ui/field/boolean.lua @ 2:72860d232f32

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Version 1.0.2

Fixed bug with explicit garbage collection (requests > 256kB caused an error)

Views prefixed with an underscore can't be called externally

ui.paginate now displays the last page, if the selected page number is too high.
author jbe/bsw
date Thu Dec 10 12:00:00 2009 +0100 (2009-12-10)
parents 9fdfb27f8e67
children
line source
1 --[[--
2 ui.field.boolean{
3 ... -- generic ui.field.* arguments, as described for ui.autofield{...}
4 style = style, -- "radio" or "checkbox",
5 nil_allowed = nil_allowed -- set to true, if nil is allowed as third value
6 }
7
8 This function inserts a field for boolean values in the active slot. For description of the generic field helper arguments, see help for ui.autofield{...}.
9
10 --]]--
11
12 function ui.field.boolean(args)
13 local style = args.style
14 if not style then
15 if args.nil_allowed then
16 style = "radio"
17 else
18 style = "checkbox"
19 end
20 end
21 local extra_args = { fetch_value = true }
22 if not args.readonly and args.style == "radio" then
23 extra_args.disable_label_for_id = true
24 end
25 ui.form_element(args, extra_args, function(args)
26 local value = args.value
27 if value ~= true and value ~= false and value ~= nil then
28 error("Boolean value must be true, false or nil.")
29 end
30 if value == nil then
31 if args.nil_allowed then
32 value = args.default
33 else
34 value = args.default or false
35 end
36 end
37 if args.readonly then
38 ui.tag{
39 tag = args.tag,
40 attr = args.attr,
41 content = format.boolean(value, args.format_options)
42 }
43 elseif style == "radio" then
44 local attr = table.new(args.attr)
45 attr.type = "radio"
46 attr.name = args.html_name
47 attr.id = ui.create_unique_id()
48 attr.value = "1"
49 if value == true then
50 attr.checked = "checked"
51 else
52 attr.checked = nil
53 end
54 ui.container{
55 attr = { class = "ui_radio_div" },
56 label = args.true_as or "Yes", -- TODO: localize
57 label_for = attr.id,
58 label_attr = { class = "ui_radio_label" },
59 content_first = true,
60 content = function()
61 ui.tag{ tag = "input", attr = attr }
62 end
63 }
64 attr.id = ui.create_unique_id()
65 attr.value = "0"
66 if value == false then
67 attr.checked = "1"
68 else
69 attr.checked = nil
70 end
71 ui.container{
72 attr = { class = "ui_radio_div" },
73 label = args.false_as or "No", -- TODO: localize
74 label_for = attr.id,
75 label_attr = { class = "ui_radio_label" },
76 content_first = true,
77 content = function()
78 ui.tag{ tag = "input", attr = attr }
79 end
80 }
81 if args.nil_allowed then
82 attr.id = ui.create_unique_id()
83 attr.value = ""
84 if value == nil then
85 attr.checked = "1"
86 else
87 attr.checked = nil
88 end
89 ui.container{
90 attr = { class = "ui_radio_div" },
91 label = args.nil_as or "N/A", -- TODO: localize
92 label_for = attr.id,
93 label_attr = { class = "ui_radio_label" },
94 content_first = true,
95 content = function()
96 ui.tag{ tag = "input", attr = attr }
97 end
98 }
99 end
100 ui.hidden_field{
101 name = args.html_name .. "__format", value = "boolean"
102 }
103 elseif style == "checkbox" then
104 if args.nil_allowed then
105 error("Checkboxes do not support nil values.")
106 end
107 local attr = table.new(args.attr)
108 attr.type = "checkbox"
109 attr.name = args.html_name
110 attr.value = "1"
111 if value then
112 attr.checked = "checked"
113 else
114 attr.checked = nil
115 end
116 ui.tag{ tag = "input", attr = attr }
117 ui.hidden_field{
118 name = args.html_name .. "__format",
119 value = encode.format_info(
120 "boolean",
121 { true_as = "1", false_as = "" }
122 )
123 }
124 else
125 error("'style' attribute for ui.field.boolean{...} must be set to \"radio\", \"checkbox\" or nil.")
126 end
127 end)
128 end

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