Files: 02eb138217bf2dd28c3be988febc79c8d62e190b / modules / page / html / render / message.js
4187 bytesRaw
1 | var { h, when, map, Proxy, Struct, Value, computed, watch } = require('mutant') |
2 | var nest = require('depnest') |
3 | var ref = require('ssb-ref') |
4 | var AnchorHook = require('../../../../lib/anchor-hook') |
5 | |
6 | exports.needs = nest({ |
7 | 'keys.sync.id': 'first', |
8 | 'feed.obs.thread': 'first', |
9 | 'message.sync.unbox': 'first', |
10 | 'message.sync.root': 'first', |
11 | 'message.html': { |
12 | render: 'first', |
13 | compose: 'first' |
14 | }, |
15 | 'sbot.async.get': 'first', |
16 | 'intl.sync.i18n': 'first', |
17 | 'message.html.missing': 'first' |
18 | }) |
19 | |
20 | exports.gives = nest('page.html.render') |
21 | |
22 | exports.create = function (api) { |
23 | const i18n = api.intl.sync.i18n |
24 | return nest('page.html.render', function (id) { |
25 | if (!ref.isMsg(id)) return |
26 | var loader = h('div', {className: 'Loading -large'}) |
27 | |
28 | var result = Proxy(loader) |
29 | var anchor = Value() |
30 | |
31 | var meta = Struct({ |
32 | type: 'post', |
33 | root: Proxy(id), |
34 | branch: Proxy(id), |
35 | reply: Value(undefined), |
36 | channel: Value(undefined), |
37 | recps: Value(undefined) |
38 | }) |
39 | |
40 | var compose = api.message.html.compose({ |
41 | meta, |
42 | isPrivate: when(meta.recps, true), |
43 | shrink: false, |
44 | hooks: [ |
45 | AnchorHook('reply', anchor, (el) => el.focus()) |
46 | ], |
47 | placeholder: when(meta.recps, i18n('Write a private reply'), i18n('Write a public reply')) |
48 | }) |
49 | |
50 | api.sbot.async.get(id, (err, value) => { |
51 | if (err) { |
52 | return result.set(h('PageHeading', [ |
53 | h('h1', i18n('Cannot load thread')) |
54 | ])) |
55 | } |
56 | |
57 | if (typeof value.content === 'string') { |
58 | value = api.message.sync.unbox(value) |
59 | } |
60 | |
61 | if (!value) { |
62 | return result.set(h('PageHeading', [ |
63 | h('h1', i18n('Cannot display message.')) |
64 | ])) |
65 | } |
66 | |
67 | // what happens in private stays in private! |
68 | meta.recps.set(value.content.recps) |
69 | |
70 | var author = value.author |
71 | var root = api.message.sync.root({key: id, value}) || id |
72 | var isReply = id !== root |
73 | var thread = api.feed.obs.thread(id, {branch: isReply}) |
74 | |
75 | meta.channel.set(value.content.channel) |
76 | meta.root.set(root || thread.rootId) |
77 | |
78 | // track message author for resolving missing messages and reply mentions |
79 | meta.reply.set({[id]: author}) |
80 | |
81 | // if root thread, reply to last post |
82 | meta.branch.set(isReply ? thread.branchId : thread.lastId) |
83 | |
84 | var container = h('Thread', [ |
85 | h('div.messages', [ |
86 | when(thread.branchId, h('a.full', {href: thread.rootId, anchor: id}, [i18n('View full thread')])), |
87 | map(thread.messages, (msg) => { |
88 | return computed([msg, thread.previousKey(msg)], (msg, previousId) => { |
89 | return h('div', { |
90 | hooks: [AnchorHook(msg.key, anchor, showContext)] |
91 | }, [ |
92 | msg.key !== id ? api.message.html.missing(last(msg.value.content.branch), msg) : null, |
93 | api.message.html.render(msg, { |
94 | pageId: id, |
95 | previousId, |
96 | includeForks: msg.key !== id, |
97 | includeReferences: true |
98 | }) |
99 | ]) |
100 | }) |
101 | }, { |
102 | maxTime: 5, |
103 | idle: true |
104 | }) |
105 | ]), |
106 | compose |
107 | ]) |
108 | result.set(when(thread.sync, container, loader)) |
109 | |
110 | }) |
111 | |
112 | var view = h('div', {className: 'SplitView'}, [ |
113 | h('div.main', [ |
114 | result |
115 | ]) |
116 | ]) |
117 | |
118 | view.setAnchor = function (value) { |
119 | anchor.set(value) |
120 | } |
121 | |
122 | return view |
123 | }) |
124 | } |
125 | |
126 | function showContext (element) { |
127 | var scrollParent = getScrollParent(element) |
128 | if (scrollParent) { |
129 | // ensure context is visible |
130 | scrollParent.scrollTop = Math.max(0, scrollParent.scrollTop - 100) |
131 | } |
132 | } |
133 | |
134 | function getScrollParent (element) { |
135 | while (element.parentNode) { |
136 | if (element.parentNode.scrollTop > 10 && isScroller(element.parentNode)) { |
137 | return element.parentNode |
138 | } else { |
139 | element = element.parentNode |
140 | } |
141 | } |
142 | } |
143 | |
144 | function isScroller (element) { |
145 | var value = window.getComputedStyle(element)['overflow-y'] |
146 | return (value === 'auto' || value === 'scroll') |
147 | } |
148 | |
149 | function last (array) { |
150 | if (Array.isArray(array)) { |
151 | return array[array.length - 1] |
152 | } else { |
153 | return array |
154 | } |
155 | } |
156 |
Built with git-ssb-web