Files: afe7de9580840925af61711b5ab0d6c57d1131a4 / modules / compose.js
3900 bytesRaw
1 | |
2 | var h = require('hyperscript') |
3 | var u = require('../util') |
4 | var suggest = require('suggest-box') |
5 | var mentions = require('ssb-mentions') |
6 | var lightbox = require('hyperlightbox') |
7 | var cont = require('cont') |
8 | |
9 | exports.needs = { |
10 | suggest_mentions: 'map', //<-- THIS MUST BE REWRITTEN |
11 | publish: 'first', |
12 | message_content: 'first', |
13 | message_confirm: 'first', |
14 | file_input: 'first' |
15 | } |
16 | |
17 | exports.gives = 'message_compose' |
18 | |
19 | function id (e) { return e } |
20 | |
21 | /* |
22 | opts can take |
23 | |
24 | placeholder: string. placeholder text, defaults to "Write a message" |
25 | prepublish: function. called before publishing a message. |
26 | shrink: boolean. set to false, to make composer not shrink (or hide controls) when unfocused. |
27 | */ |
28 | |
29 | exports.create = function (api) { |
30 | |
31 | return function (meta, opts, cb) { |
32 | if('function' === typeof cb) { |
33 | if('function' === typeof opts) |
34 | opts = {prepublish: opts} |
35 | } |
36 | |
37 | if(!opts) opts = {} |
38 | opts.prepublish = opts.prepublish || id |
39 | |
40 | var accessories |
41 | meta = meta || {} |
42 | if(!meta.type) throw new Error('message must have type') |
43 | var ta = h('textarea', { |
44 | placeholder: opts.placeholder || 'Write a message', |
45 | style: {height: opts.shrink === false ? '200px' : ''} |
46 | }) |
47 | |
48 | if(opts.shrink !== false) { |
49 | var blur |
50 | ta.addEventListener('focus', function () { |
51 | clearTimeout(blur) |
52 | if(!ta.value) { |
53 | ta.style.height = '200px' |
54 | } |
55 | accessories.style.display = 'block' |
56 | }) |
57 | ta.addEventListener('blur', function () { |
58 | //don't shrink right away, so there is time |
59 | //to click the publish button. |
60 | clearTimeout(blur) |
61 | blur = setTimeout(function () { |
62 | if(ta.value) return |
63 | ta.style.height = '50px' |
64 | accessories.style.display = 'none' |
65 | }, 200) |
66 | }) |
67 | } |
68 | |
69 | ta.addEventListener('keydown', function (ev) { |
70 | if(ev.keyCode === 13 && ev.ctrlKey) publish() |
71 | }) |
72 | |
73 | var files = [] |
74 | var filesById = {} |
75 | |
76 | function publish() { |
77 | publishBtn.disabled = true |
78 | var content |
79 | try { |
80 | content = JSON.parse(ta.value) |
81 | } catch (err) { |
82 | meta.text = ta.value |
83 | meta.mentions = mentions(ta.value).map(function (mention) { |
84 | // merge markdown-detected mention with file info |
85 | var file = filesById[mention.link] |
86 | if (file) { |
87 | if (file.type) mention.type = file.type |
88 | if (file.size) mention.size = file.size |
89 | } |
90 | return mention |
91 | }) |
92 | try { |
93 | meta = opts.prepublish(meta) |
94 | } catch (err) { |
95 | publishBtn.disabled = false |
96 | if (cb) cb(err) |
97 | else alert(err.message) |
98 | } |
99 | return api.message_confirm(meta, done) |
100 | } |
101 | |
102 | api.message_confirm(content, done) |
103 | |
104 | function done (err, msg) { |
105 | publishBtn.disabled = false |
106 | if(err) return alert(err.stack) |
107 | else if (msg) ta.value = '' |
108 | |
109 | if (cb) cb(err, msg) |
110 | } |
111 | } |
112 | |
113 | |
114 | var publishBtn = h('button', 'Preview', {onclick: publish}) |
115 | var composer = |
116 | h('div.compose', h('div.column', ta, |
117 | accessories = h('div.row.compose__controls', |
118 | //hidden until you focus the textarea |
119 | {style: {display: opts.shrink === false ? '' : 'none'}}, |
120 | api.file_input(function (file) { |
121 | files.push(file) |
122 | filesById[file.link] = file |
123 | |
124 | var embed = file.type.indexOf('image/') === 0 ? '!' : '' |
125 | ta.value += embed + '['+file.name+']('+file.link+')' |
126 | console.log('added:', file) |
127 | }), |
128 | publishBtn) |
129 | ) |
130 | ) |
131 | |
132 | suggest(ta, function (name, cb) { |
133 | cont.para(api.suggest_mentions(name)) |
134 | (function (err, ary) { |
135 | cb(null, ary.reduce(function (a, b) { |
136 | if(!b) return a |
137 | return a.concat(b) |
138 | }, [])) |
139 | }) |
140 | }, {}) |
141 | |
142 | return composer |
143 | |
144 | } |
145 | |
146 | } |
147 | |
148 | |
149 |
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