Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Taming Contenteditable with Ember.js
Search
paddyobrien
July 23, 2015
Technology
1
350
Taming Contenteditable with Ember.js
paddyobrien
July 23, 2015
Tweet
Share
Other Decks in Technology
See All in Technology
La gouvernance territoriale des données grâce à la plateforme Terreze
bluehats
0
150
allow_retry と Arel.sql / allow_retry and Arel.sql
euglena1215
1
160
データアナリストからアナリティクスエンジニアになった話
hiyokko_data
2
440
DevIO2025_継続的なサービス開発のための技術的意思決定のポイント / how-to-tech-decision-makaing-devio2025
nologyance
1
370
250905 大吉祥寺.pm 2025 前夜祭 「プログラミングに出会って20年、『今』が1番楽しい」
msykd
PRO
1
680
下手な強制、ダメ!絶対! 「ガードレール」を「檻」にさせない"ガバナンス"の取り方とは?
tsukaman
2
420
Codeful Serverless / 一人運用でもやり抜く力
_kensh
7
370
Agile PBL at New Grads Trainings
kawaguti
PRO
1
390
20250910_障害注入から効率的復旧へ_カオスエンジニアリング_生成AIで考えるAWS障害対応.pdf
sh_fk2
3
220
機械学習を扱うプラットフォーム開発と運用事例
lycorptech_jp
PRO
0
230
自作JSエンジンに推しプロポーザルを実装したい!
sajikix
1
170
オブザーバビリティが広げる AIOps の世界 / The World of AIOps Expanded by Observability
aoto
PRO
0
340
Featured
See All Featured
Into the Great Unknown - MozCon
thekraken
40
2k
Fireside Chat
paigeccino
39
3.6k
A designer walks into a library…
pauljervisheath
207
24k
ReactJS: Keep Simple. Everything can be a component!
pedronauck
667
120k
Dealing with People You Can't Stand - Big Design 2015
cassininazir
367
27k
Exploring the Power of Turbo Streams & Action Cable | RailsConf2023
kevinliebholz
34
6k
Stop Working from a Prison Cell
hatefulcrawdad
271
21k
I Don’t Have Time: Getting Over the Fear to Launch Your Podcast
jcasabona
33
2.4k
A better future with KSS
kneath
239
17k
The MySQL Ecosystem @ GitHub 2015
samlambert
251
13k
Faster Mobile Websites
deanohume
309
31k
Distributed Sagas: A Protocol for Coordinating Microservices
caitiem20
333
22k
Transcript
Taming Content Editable with Ember.js
[email protected]
You built your own content editor?!
3 We have lots of places where our users can
write messages
4
5
6
7
8 We need precise control of how our users write
their messages.
9 We want to make it easy to create rich
and beautiful messages
So yeah, we built our own content editor
What is content editable and why it is terrible
12
13
14 Behind this simple property lies deep wells of despair
What happens next? <div contenteditable> d| </div>
What happens next? Chrome d| d <div>|</div> becomes
What happens next? d| d <div>|</div> becomes Safari
What happens next? d| d <p>|</p> becomes IE11
What happens next? Firefox d| d <br>| <br type=“_moz”> becomes
None
contenteditable • What about backspace? • <p> has a line-height
of 1.5em Chrome becomes <p contenteditable> d|d </p> <p contenteditable> d|<span style="line-height: 1.5em;”>d</span> </p>
22
https://speakerdeck.com/patocallaghan/contenteditable and much, much more….
24 Why does this matter?
25 If you can’t guarantee consistent markup, you can’t guarantee
consistent display
26 So how did we tame this?
27 Don’t try to build a HTML editor, try to
build a block editor
None
29 Use the good bits over-ride the rest.
30 Hide as much complexity as we can behind an
API
Block Selection do Stack Block List The DOM Composer component
The BOM
The BOM The DOM Editor View Event Handling DOM Selection
UI Coordinates Rendering Composer component
The BOM Composer State BOM Selection Undo Stack Blocks The
DOM Editor View Event Handling DOM Selection UI Coordinates Rendering Composer component Commands
Composer State The BOM
Composer State Undo Stack The BOM
Composer State Block Selection Undo Stack The BOM
Composer State Block Selection Undo Stack Block List The BOM
Composer State Block Selection Undo Stack The BOM Paragraph Item
Ordered List Block List
Paragraph Composer State Block Selection Undo Stack Block List Item
Ordered List Command • Backspace • Delete • Return • Sync • Insert Attribute • Insert Character • Insert Block • Paste • ...
None
Blocks Paragraph text: “hello there” Entities Italic (0 -> 5)
Bold (6 -> 14) Selection: 0:0:1 → 0:0:1
Blocks Paragraph text: “hello there” Entities Italic (0 -> 5)
Bold (6 -> 14) Selection: 0:0:2 → 0:0:9
Blocks Paragraph text: “hello there” Entities Italic (0 -> 5)
Bold (9 -> 14) Selection: 0:0:2 → 0:0:9
Blocks Paragraph text: “hello there” Entities Italic (0 -> 5)
Bold (2 -> 14) Selection: 0:0:2 → 0:0:9
45 So now you have an editor
Syncing
Syncing UI Event Command Mutate BOM Rerender
Syncing UI Event Command Mutate BOM Rerender? Can Browser handle
it? No Do Nothing Yes
Syncing UI Event Command Mutate BOM Rerender? Can Browser handle
it? No Do Nothing Yes Should we let the BOM know? Yes
Undo Stack github.com/intercom/ember-undo-stack
51 Demo Time
How Ember helped
53 A decent Object Model
Computed Properties as a free caching mechanism
Components are helpfully strict
Ember CLI addons ❤️
Thanks for listening!
[email protected]
Questions?