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Alex Russell Project Lead, the Dojo Toolkit Maslow’S Hierarchy of Needs

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Alex Russell Project Lead, the Dojo Toolkit Maslow’S Hierarchy of Needs Dojo 1.0: Great Experiences... For Everyone Alex Russell Project Lead, The Dojo Toolkit Maslow’s Hierarchy of Needs • Deficiency needs - Physiological - Saftety - Love/Belonging - Esteem • Growth needs - Exploration, asthetics - Self-actualization http://en.wikipedia.org/wiki/Maslow's_hierarchy_of_needs The Application Hierachy Of Needs • Deficiency needs - Platform - Security - Social Capacity - Competition • Growth Needs - Integration - Platform capacity If The Platform Isn’t Ubiquitous And Capable, Another Will Emerge Changes In Cost Are Changes In Capacity Complexity Is The New Dominating Factor In Cost Where Are We Fighting Complexity? • HTML • CSS • JavaScript • Server integration http://flickr.com/photos/kidisland/502242023/ The Wall Of Complexity Implements Of War • Grouping + Encapsulation • Shared Context • Patterns of Practice • Separation of Concerns • Forgiveness So How Are We Doing? Implements Of Failure • Grouping + Encapsulation - Server-side includes essentially state of the art • Shared Context - HTML/CSS/JS stack wickedly hard to learn • Patterns of Practice - Microformats, CSS as emergent semantics • Separation of Concerns • Forgiveness - XML pipe dreams persist, Semantic Web faffery Semantic Differences • HTML gives us: - Platform - Some security - Social capacity - Patterns of practice - Shared context (common vocabulary) • The failure to provide sustainable platform competition leaves us arguing over the scraps Good Semantics Let You Say What You Mean And Get What You Want For Applications, HTML/CSS Are Liabilities Ajax: The “Get Out Of Jail Free” Card • Within a small band of capabilities, JavaScript allows us to dig our way out - Cost is enormous • Toolkits have exhibited competition and platform capacity behaviors • Integration nowhere to be seen - Example: mirrored validation - REST? Something else? Platform Capacity Is The Ability To Grow New Semantics How The Web Gets New Semantics (decreasing order of leverage) 1.Standardization (W3C, ECMA, etc.) • Byproduct of competition 2.Invention • JavaScript “upgrades” or “hot-patches” to pages 3.Convention • Microformats, CSS patterns of practice When Are You Going To Talk About Dojo? Invention vs. Completeness • Invented semantics via JS are disadvantaged: - On the wire - In performance and integration - In access to assistive technologies - In look-and-feel cohesiveness • Only medium/large-scale investment yeild complete results today - Product vs. project A Toolkit That Invents Semantics Is Responsible For All Of These Concerns* * this argument is both self-serving and disingenuous, however that doesn’t make it false L&F Responsibility Developer User Experience <a href="images/depot.jpg" dojoType="dojox.image.Lightbox" group="myTravels" title="Photo of a Train Depot">A Train Depot</a> <a href="images/greenville.jpg" dojoType="dojox.image.Lightbox" group="myTravels" title="A Photo of Greeneville, TN">Greenville</a> Customization /* structured CSS allows over-rides */ .dijitDialogUnderlay { background: white; } // template system allows complete UI rework dojo.extend(dojox.image._LightboxDialog, { templatePath: dojo.moduleUrl(“myApp.tmpl”, “dialog.html”) }); a11y & i18n Concerns • Incredibly robust keyboard handling code • All Dijit widgets fully WAI ARIA augmented - role="wairole:dialog" - System support for easily adding role/state info to your own widgets • Detection/support for high-contrast mode - separate theme applied for high-contrast - structured CSS cascade allows you to easily provide a11y rules for custom themes and widgets Performance Responsiblity • Time on the wire • Time-to-render • Data caching, storage • Encourage usage of faster paths through better API design • “Pay-as-you-go” performance optimization strategies - Make each step on the path as painless as possible Performance Responsiblity • Stragegies: - Tiny Core - Tightly controlled, curated APIs - CDN edge-cached, gzip always enabled - The Build Process - Completely optional, gradual adoption - Package system reduces complexity through grouping You Can’t Tack These On Later, i.e., Systemization Matters Dojo Expresses Platform Capacity ...But We Wish We Didn’t Have To Our Collective Perception Of Where We Are On The Hierarchy Is Wrong The Lack Of Competition Is A Deficiency That Prevents Access To Growth Needs You Should Be Demanding A Better Future From The People Who Can Deliver It Until Then, Toolkits Should Be Preparing For A Better Future... For Everyone Build With, Not On .
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