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Declarative and standards-based web application development with the Ample SDK

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Béla Varga
Béla Varga

UI development in the browser can be done declaratively or programmatically. Declarative development uses markup languages like XUL to define UI layout and behavior separately from logic, improving readability, reusability, and team collaboration. The Ample SDK provides a declarative approach, generating a shadow DOM that normalizes browser APIs while allowing the use of standards-based markup languages to build reusable, modular UIs. It provides object models for documents, elements and other interfaces that wrap native browser APIs for cross-browser compatibility.

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Declarative and standards-based web application development with the Ample SDK
UI Develepoment in the browser? YES! oh, NO! HTML, CSS, XML, JavaScript and the browser API ... the browser API
ok we need a framework, but remember this is only plan b ...
YUI Ext JS qooxdoo Ample SDK Backbase jQuery UI dojo dijit AJAX.org JavaScriptMVC MooTools GWT jQuery prototype Cappuccino JSF dojo ASP.NET Ajax Raphaël SAJAX XAJAX script.aculo.us vapor.js
Standards for UI Development? XHTML XForms XPath HTML5 WHATWG W3C XInclude XBL Web Controls SMIL XML Schema CSS3 SVG DOM XUL XSLT REX Mozilla
Ok Standards, but now? Yes, with Ample SDK: DOM Level 2 Core / Events & Selector API HTML5 Canvas / Forms CSS2.1 fixes & CSS 3 Namespaces, UI SVG - vector graphics (yes in IE5 ) SMIL - Synchronized Multimedia Integration Language XSLT - transform XML fragments with XSL-T stylesheets XPath - expressions to locate XML nodes (in dev.) XInclude - merge and XML inclusion XUL - XML User Interface Language
programatic And what is „declarative“ ? <div id="slider" /> //YUI YUI().use('slider', function (Y) { declarative ! var slider = new Y.Slider({ // Ajax.org Platform ! ! min! ! : 20, <a:slider min="20" max="40" /> ! ! max! ! : 40 ! }); // Backbase ! slider.render('#slider'); <b:slider min="20" max="40" /> }); //Ample SDK // ExtJS <xul:scale min="20" max="40" /> new Ext.Slider({ renderTo!: 'slider', minValue!: 20, maxValue!: 40 }); //jQuery UI plain vanilla HTML and JS $('#slider').slider({ <div class="x-slider x-slider-horz" id="ext-comp-1001" s ! min! ! : 20, ! <div class="x-slider-end" id="ext-gen3"> ! max! ! : 40 ! ! <div class="x-slider-inner" id="ext-gen4" style= }); ! ! ! <div class="x-slider-thumb" id="ext-gen6" st ! ! ! </div> ! ! ! <a hidefocus="on" tabindex="-1" href="#" cla ! ! </div> ! </div>
Ok declarative is shorter, but why it is better? - again, it is standard base (Mozilla XUL) in Ample SDK - namespacing and own domain specific markup - separation of concerns (layout, logic and style) - building blocks so easier to maintain - better readable (and readable for non js guys) - ui reusable in the future (or after api change) - easier to split responsibilities in teams (ui dude and js coder)
LOGIC UI DESIGN JAVASCRIPT INTERFACE WEB DEVELOPER ENGINEER DESIGNER Javascript XUL CSS DOM Level 3 SVG HTML 5
Ladies and Gentlemen, the code ... <head> <script type="text/javascript" src="ample/runtime.js"></script> <script type="text/javascript" src="ample/languages/xul/xul.js"></script> <link type="text/css" src="ample/languages/xul/themes/default/style.css"/> <style type="text/ample+css"> @namespace xul "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"; xul|button { color: red; } </style> <script type="text/javascript"> function alertHelloWorld(oEvent) { alert('Element "' + oEvent.target.tagName + '" was clicked'); } </script> </head> <body> <script type="application/ample+xml">! <xul:button onclick="alertHelloWorld(event)">Hello, World!</xul:button> </script>! ! ! ! ! ! ! ! </body>
The Ample SDK way. equalize browser APIs without introducing new: - brings features into the browser - fixes existing features - or does nothing if the feature is well implemented Text „ ... coding against Ample SDK is like Yeah, doing it against a cross-browser browser! “
How it works ... - Ample SDK is a browser in a browser - generates the browser DOM (shadow) tree - Ample SDK Node is the brave brother of the DOM Node div div div select div div input button option option div div Ample SDK DOM Browse DOM (shadow tree)
Ample SDK Node API getElementById childNodes, parentNode getElementsByTagName (NS) firstChild, lastChild querySelector, querySelectorAll previousSibling createElement (NS), createTextNode nextSibling setAttribute, getAttribute, removeAttribute (NS) appendChild, insertBefore, removeChild, replaceChild
Class Model (ample.classes) Node Document Element OWNElement XULElement XHTMLElement OWNFancyElement XULWindowElement XHTMLElement_div
Ample SDK jQuery API DOM API document.getElementById(“slider“).setAttribute(“value“,“30“) AMPLE SDK API ample.getElementById(“slider“).setAttribute(“value“,“30“) AMPLE SDK jQUERY API ample.query(“#slider“).attr(“value“,“30“)
Conclusion - natural client-side development experience - good separation of concerns (layout, logic and style) - modular and readable UI building - standard based API that will stay - create own domain specific markup language - API validation and guarding - open source and available on github - ...
More Information amplesdk.com github.com/clientside/amplesdk Sergey Ilinsky @ilinsky Béla Varga @netzzwerg
THX

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Declarative and standards-based web application development with the Ample SDK

  • 2. UI Develepoment in the browser? YES! oh, NO! HTML, CSS, XML, JavaScript and the browser API ... the browser API
  • 3. ok we need a framework, but remember this is only plan b ...
  • 4. YUI Ext JS qooxdoo Ample SDK Backbase jQuery UI dojo dijit AJAX.org JavaScriptMVC MooTools GWT jQuery prototype Cappuccino JSF dojo ASP.NET Ajax Raphaël SAJAX XAJAX script.aculo.us vapor.js
  • 5. Standards for UI Development? XHTML XForms XPath HTML5 WHATWG W3C XInclude XBL Web Controls SMIL XML Schema CSS3 SVG DOM XUL XSLT REX Mozilla
  • 6. Ok Standards, but now? Yes, with Ample SDK: DOM Level 2 Core / Events & Selector API HTML5 Canvas / Forms CSS2.1 fixes & CSS 3 Namespaces, UI SVG - vector graphics (yes in IE5 ) SMIL - Synchronized Multimedia Integration Language XSLT - transform XML fragments with XSL-T stylesheets XPath - expressions to locate XML nodes (in dev.) XInclude - merge and XML inclusion XUL - XML User Interface Language
  • 7. programatic And what is „declarative“ ? <div id="slider" /> //YUI YUI().use('slider', function (Y) { declarative ! var slider = new Y.Slider({ // Ajax.org Platform ! ! min! ! : 20, <a:slider min="20" max="40" /> ! ! max! ! : 40 ! }); // Backbase ! slider.render('#slider'); <b:slider min="20" max="40" /> }); //Ample SDK // ExtJS <xul:scale min="20" max="40" /> new Ext.Slider({ renderTo!: 'slider', minValue!: 20, maxValue!: 40 }); //jQuery UI plain vanilla HTML and JS $('#slider').slider({ <div class="x-slider x-slider-horz" id="ext-comp-1001" s ! min! ! : 20, ! <div class="x-slider-end" id="ext-gen3"> ! max! ! : 40 ! ! <div class="x-slider-inner" id="ext-gen4" style= }); ! ! ! <div class="x-slider-thumb" id="ext-gen6" st ! ! ! </div> ! ! ! <a hidefocus="on" tabindex="-1" href="#" cla ! ! </div> ! </div>
  • 8. Ok declarative is shorter, but why it is better? - again, it is standard base (Mozilla XUL) in Ample SDK - namespacing and own domain specific markup - separation of concerns (layout, logic and style) - building blocks so easier to maintain - better readable (and readable for non js guys) - ui reusable in the future (or after api change) - easier to split responsibilities in teams (ui dude and js coder)
  • 9. LOGIC UI DESIGN JAVASCRIPT INTERFACE WEB DEVELOPER ENGINEER DESIGNER Javascript XUL CSS DOM Level 3 SVG HTML 5
  • 10. Ladies and Gentlemen, the code ... <head> <!-- (A) Ample SDK runtime and UI language --> <script type="text/javascript" src="ample/runtime.js"></script> <script type="text/javascript" src="ample/languages/xul/xul.js"></script> <link type="text/css" src="ample/languages/xul/themes/default/style.css"/> <!-- (1) Style --> <style type="text/ample+css"> @namespace xul "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"; xul|button { color: red; } </style> <!-- (2) Logic --> <script type="text/javascript"> function alertHelloWorld(oEvent) { alert('Element "' + oEvent.target.tagName + '" was clicked'); } </script> </head> <body> <!-- (3) Layout --> <script type="application/ample+xml">! <xul:button onclick="alertHelloWorld(event)">Hello, World!</xul:button> </script>! ! ! ! ! ! ! ! </body>
  • 11. The Ample SDK way. equalize browser APIs without introducing new: - brings features into the browser - fixes existing features - or does nothing if the feature is well implemented Text „ ... coding against Ample SDK is like Yeah, doing it against a cross-browser browser! “
  • 12. How it works ... - Ample SDK is a browser in a browser - generates the browser DOM (shadow) tree - Ample SDK Node is the brave brother of the DOM Node div div div select div div input button option option div div Ample SDK DOM Browse DOM (shadow tree)
  • 13. Ample SDK Node API getElementById childNodes, parentNode getElementsByTagName (NS) firstChild, lastChild querySelector, querySelectorAll previousSibling createElement (NS), createTextNode nextSibling setAttribute, getAttribute, removeAttribute (NS) appendChild, insertBefore, removeChild, replaceChild
  • 14. Class Model (ample.classes) Node Document Element OWNElement XULElement XHTMLElement OWNFancyElement XULWindowElement XHTMLElement_div
  • 15. Ample SDK jQuery API DOM API document.getElementById(“slider“).setAttribute(“value“,“30“) AMPLE SDK API ample.getElementById(“slider“).setAttribute(“value“,“30“) AMPLE SDK jQUERY API ample.query(“#slider“).attr(“value“,“30“)
  • 16. Conclusion - natural client-side development experience - good separation of concerns (layout, logic and style) - modular and readable UI building - standard based API that will stay - create own domain specific markup language - API validation and guarding - open source and available on github - ...
  • 18. THX