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Adaptation and Components

Avatar for Nicolas Gallagher Nicolas Gallagher
April 09, 2014
Programming
1.5k
6

Adaptation and Components

About adaptable systems and the benefits of the component abstraction when building web UI's.

Avatar for Nicolas Gallagher

Nicolas Gallagher

April 09, 2014

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Transcript

  1. Adaptation and Components @necolas

  2. “Adaption” vs “Change”

  3. “Adaptable” vs “Adaptive”

  4. Adaptable systems

  5. 2013 App 2014 App 2012 App

  6. The ability to adapt-in-time is business-critical

  7. Complexity affects the ability to adapt

  8. Technology type as an organising principle

  9. HTML A B C D ... CSS A B C

    D ... JS A B C D ... UNIT A B C D ... ... A B C D ...

  10. HTML A B C D ... CSS A B C

    D ... JS A B C D ... UNIT A B C D ... ... A B C D ...

  11. HTML AD B CD D ... CSS A AB C

    D ... JS A B C D ... UNIT A B C D ... ... A B AC D ...

  12. Leaky abstractions increase complexity

  13. <article class="user"> <div class="avatar"> <img class="avatar-img" ...> <div class="tooltip hidden">...</div>

    </div> <button class="btn btn-follow"> <span class="btn-icon"> <span class="icn icn-follow"></span> </span> <span class= "btn-text">...</span> </button> </article>

  14. <article class="user"> <button class="btn btn-follow"> <span class="btn-icon"> <span class="icn icn-follow"></span>

    </span> <span class= "btn-text">...</span> </button> </article> <div class="avatar"> <img class="avatar-img" ...> <div class="tooltip hidden">...</div> </div>

  15. <article class="user"> <button class="btn btn-follow"> <span class="btn-icon"> <span class="icn icn-follow"></span>

    </span> <span class= "btn-text">...</span> </button> </article> <div class="avatar"> <img class="user-img avatar-img" ...> <div class="tooltip hidden">...</div> </div>

  16. /* avatar */ .avatar { } /* tweet */ .tweet

    { } .tweet .avatar { } .tweet .text {} /* user card */ .user { } .user .avatar { }

  17. Modularity is not enough

  18. Components as the primary unit of scale

  19. A HTML CSS JS UNIT ...

  20. A HTML CSS JS UNIT ... B HTML CSS JS

    UNIT ...

  21. A HTML CSS JS UNIT ... B HTML CSS JS

    UNIT ... C HTML CSS JS UNIT ...

  22. A HTML CSS JS UNIT ... B HTML CSS JS

    UNIT ... C HTML CSS JS UNIT ... D HTML CSS JS UNIT ...

  23. A HTML CSS JS UNIT ... B HTML CSS JS

    UNIT ... C HTML CSS JS UNIT ... D HTML CSS JS UNIT ... ... HTML CSS JS UNIT ...

  24. Components are simple

  25. Components are composable & configurable

  26. Reduces emergent complexity

  27. Adaptable over reusable

  28. facebook.github.io/react Defining components with React

  29. /** @jsx React.DOM */ var Photo = React.createClass({ render: function

    () { return ( <img src={this.props.src} /> ); } });

  30. <Photo src="photo.jpg"> </Photo>

  31. <figure className={'photo' + this.props.size}> <span className={'crop' + this.props.crop}> <img className="img"

    src={this.props.src} alt= "" /> </span> <figcaption className="caption"> {this.props.children} </figcaption> </figure>

  32. <Photo src="photo.jpg" size="large" crop="circle"> Half-Dome in Yosemite National Park <Attribution

    owner="necolas" /> </Photo>

  33. suitcss.github.io Styling components with SUIT CSS

  34. <figure className={'photo' + this.props.size}> <span className={'crop' + this.props.crop}> <img className="img"

    src={this.props.src} alt= "" /> </span> <figcaption className="caption"> {this.props.children} </figcaption> </figure>

  35. <figure className={'photo' + this.props.size}> <span className={'crop' + this.props.crop}> <img className="img"

    src={this.props.src} alt="" /> </span> <figcaption className="caption"> {this.props.children} </figcaption> </figure>

  36. <figure className={'Photo Photo--' + this.props.size}> <span className={'Photo-crop Photo-crop--' + this.props.crop}>

    <img className="Photo-img" src={this.props.src} alt="" /> </span> <figcaption className="Photo-caption u-textBreak"> {this.props.children} </figcaption> </figure>

  37. /** @define Photo */ .Photo {} /* Component */ .Photo--large

    {} /* Component modifier */ .Photo-crop {} /* Component descendent */ .Photo-crop--circle {} /* Descendent modifier */ .Photo-img {} .Photo-caption {}

  38. <figure className={'Photo Photo--' + this.props.size}> <span className={'Photo-crop Photo-crop--' + this.props.crop}>

    <img className="Photo-img" src={this.props.src} alt="" /> </span> <figcaption className="Photo-caption u-textBreak"> {this.props.children} </figcaption> </figure>

  39. <figure className={'Photo Photo--' + this.props.size}> <span className={'Photo-crop Photo-crop--' + this.props.crop}>

    <img className="Photo-img" src={this.props.src} alt="" /> </span> <figcaption className="Photo-caption u-textBreak"> {this.props.children} </figcaption> <Attribution owner={this.props.owner} /> </figure>

  40. github.com/component/component Managing components with Component

  41. A HTML CSS JS UNIT ... B HTML CSS JS

    UNIT ... C HTML CSS JS UNIT ... D HTML CSS JS UNIT ... ... HTML CSS JS UNIT ...

  42. A HTML CSS JS UNIT ...

  43. A HTML CSS JS UNIT ... component.json

  44. A HTML CSS JS UNIT ... component.json B

  45. A HTML CSS JS UNIT ... component.json B C D

    E F

  46. { "name": "tweet", "styles": [ "tweet.css" ], "scripts": [ "tweet.js"

    ], "dependencies": { "suitcss/utils": "0.8.0" }, "locals": [ "avatar", "inline-tweetbox", "tweet-actions" ] }

  47. Building web UI is more than a CSS problem

  48. The end @necolas