Bespin, Skywriter, AceThe Past, Present and Future
of online Code Editing
Fabian JakobsKevin Dangoor
Montag, 2. Mai 2011
Fabian Jakobsajax.org
@fjakobs
Kevin DangoorMozilla
@dangoor
Montag, 2. Mai 2011
Code Editors
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Code Editors
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Code Editors
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Code Editors
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Code Editors
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Code Editors
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No Compromise
• we don‘t strive for almost as good
• we strive to be at least as good
• it‘s time for the web to take over
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Ajax.org Cloud9 Editor(Ace)
• Fully featured
• Extensible
• Scalable
• Cross Browser
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Our Goal Today
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Ace Building Blocks
Renderer(View)
Editor(Controller)
Edit Session(Model)
LanguageMode
Document
Selection
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Demo Part 1
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Tech Details
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Renderer
•DOM is used for drawing only
•no state in the DOM
•never read the DOM
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Virtual Viewport................. . . ..........
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Virtual Viewport
• rendering a full document in the DOM doesn‘t scale
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Virtual Viewport
• rendering a full document in the DOM doesn‘t scale
• only render visible rows
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Virtual Viewport
• rendering a full document in the DOM doesn‘t scale
• only render visible rows
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Performance• Document size shouldn‘t matter
• Everything in the main thread should scale with the viewport size
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Performance• Document size shouldn‘t matter
• Everything in the main thread should scale with the viewport size
BUT
Montag, 2. Mai 2011
Performance• Document size shouldn‘t matter
• Everything in the main thread should scale with the viewport size
BUT
• not everything does!
Montag, 2. Mai 2011
Performance• Document size shouldn‘t matter
• Everything in the main thread should scale with the viewport size
BUT
• not everything does!
• We need web workers
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Worker
Web WorkersMain JS Thread
Document....
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JS ParserEdit Session
Mirror....
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DemoPart 2
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Past, Present and Future
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13.7 billion years ago
1983
MozillaSkywriter
2010
230 million years ago 230,000 years ago
1770
2008 2009
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Present
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Present
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Present
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Present
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Present
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Present
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Present
• 30+ Contributors
• 677 Watchers, 148 Forks on Github
• 234 Pull Requests
• 17 Language modes
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Future
• Code completion
• Code Navigation
• Code Folding
• Outline View
• Documentation
Montag, 2. Mai 2011
Happy Coding!
@cloud9_editorhttp://ace.ajax.org
https://github.com/fjakobs/coffeepreview
Montag, 2. Mai 2011
Photo Credits
• Big Bang http://www.flickr.com/photos/neychurluvr/4021590334/
• Mozilla Dinosaur http://www.flickr.com/photos/neychurluvr/4021590334/
• Bacon http://en.wikipedia.org/wiki/File:RawBacon.JPG
• Ben and Dion http://www.flickr.com/photos/franksvalli/5163228449/
Montag, 2. Mai 2011
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