Building Web Hack Interfaces
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Building Web Hack Interfaces

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A presentation for Dundee University's Hack Day explaining the technologies to use and how to hack your own APIs by using Yahoo! Pipes and scraping RSS feeds.

A presentation for Dundee University's Hack Day explaining the technologies to use and how to hack your own APIs by using Yahoo! Pipes and scraping RSS feeds.

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Building Web Hack Interfaces Building Web Hack Interfaces Presentation Transcript

  • Building Web Hack Interfaces Christian Heilmann UEL Hack Day London, UK, October 2007
    • Building web interfaces is a fun task.
    • The technologies involved are easy to learn.
    • Text + Images + Multimedia
    • =
    • Content
    • “ What is it about”
    • HTML
    • =
    • Structure
    • “ What is what”
    • CSS + Background images
    • =
    • Look and Feel
    • “ How should it be displayed”
    • Scripting and Extensions
    • =
    • Behaviour
    • “ How should it behave and react?”
    • Playing each of these to their respective strengths =
    • great web products.
    • There is one thing to consider though.
    • Browser
    • Operating System
    • Screen Size
    • Screen Resolution
    • Browser Size
    • Plugins and configurations
    • Input Device
    • Reading Level
    • Vision
    • Level of Understanding
    • Motor accuracy
    • Browser
    • Operating System
    • Screen Size
    • Screen Resolution
    • Browser Size
    • Plugins and configurations
    • Input Device
    • Reading Level
    • Vision
    • Level of Understanding
    • Motor accuracy
    UNKNOWN
    • Keeping this in mind makes you a true developer for the web.
    • Be paranoid.
    • Expect the failure.
    • Yahoo! has to do that day-in day-out.
    • People trust us with their data and use our products to connect with other people.
    • This is why we hire great developers.
    • This is also why we use their knowledge to make things easier for all.
    • Instead of constantly re-inventing we spy good solutions and learn from mistakes.
    • The outcome of this research is available to you!
  • http://developer.yahoo.com
    • Learn about:
    • Design Patterns
    • Performance
    • Security
    • Tap into the collective wisdom:
  •  
  •  
    • The Yahoo! User Interface Library
    • CSS Framework
    • JavaScript Library
    • Widget Framework
    • Debugging Utility
    • CSS Components:
      • CSS Reset
      • CSS Fonts
      • CSS Grids
      • Making CSS layouts predictable and working across browsers and operating systems
    =
    • JavaScript Components:
      • DOM
      • Event
      • Connection
      • Animation
      • Making JavaScript development less random across browsers and easier to concentrate on the architecture of your scripts.
    =
    • Widgets:
      • Panel Dialog Autocomplete DataTable Slider Menu Calendar Colorpicker Tabview
      • Rich Text Editor
      • Creating HTML/CSS/JS based RIAs with tested and fully skinnable components.
    =
    • Debugging
      • YUI Logger is a cross-browser, cross-platform debugging console.
      • YUITest is a unit and component testing framework in JavaScript
    • Industrial Strength
    • for everyday solutions
    • Comes with full documentation, examples, cheatsheets and quick start guides.
    • http://developer.yahoo.com/yui/docs
    • Others already benefit:
  • http://tech.groups.yahoo.com/group/ydn-javascript/links/YUI_Implementations_001149002597/
  • http://tech.groups.yahoo.com/group/ydn-javascript/links/YUI_Implementations_001149002597/ Newsvine, Opera, O’Reilly, Dow Jones Index, Paypal, Slashdot, Digg, SugarCRM, VersionTracker,iFilm, vBulletin, ebay
    • We also like to tell people about cool YUI stuff.
  • http://yuiblog.com
    • Play with our APIs and Feeds.
    • Answers Local Mail Maps Search Shopping Travel del.icio.us Flickr™ MyBlogLog Pipes Upcoming Webjay Finance HotJobs Traffic Weather
    • Get SDKs to play with our applications:
    • Messenger
    • Music
    • Search
    • Widgets
    • What if there is some data you want to access but no API to get it in the right format?
  • http://pipes.yahoo.com
  •  
  •  
    • … or hack what is out there.
    • Example: slideshare.net
    • Slideshare is a place to share presentations.
    • You can embed the presentations into other web products.
  •  
    • There is an API, but there is no way to get all your latest presentations to have a “slide portfolio”.
    • However, there is an RSS feed with all the data I need!
  •  
    • Battle plan:
    • Retrieve feed
    • Display links to slides
    • Get the slide movies
    • Write some script to show the movies when the links are clicked
    • <?php
    • $url = 'http://www.slideshare.net/rss/user/cheilmann';
    • $ch = curl_init();
    • curl_setopt($ch, CURLOPT_URL, $url);
    • curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    • $slides = curl_exec($ch);
    • curl_close($ch);
    • $slides = str_replace('slideshare:embed','slideshareembed',$slides);
    • $slides = str_replace('media:title','mediatitle',$slides);
    • $xml = domxml_xmltree($slides);
    • $json = array();
    • $slidesharelist = '';
    • $links = $xml->get_elements_by_tagname('link');
    • $img = $xml->get_elements_by_tagname('url');
    • $titles = $xml->get_elements_by_tagname('mediatitle');
    • $embeds = $xml->get_elements_by_tagname('slideshareembed');
    • foreach ($embeds as $key=>$el) {
    • $l = $links[$key+1]->children[0]->content;
    • $t = $titles[$key]->children[0]->content;
    • $slidesharelist .= '<li><a href=&quot;'.$l.'&quot;>'.$t.'</a></li>';
    • $emb = $el->children[0]->content;
    • if(strpos($emb,'<div')===false){$emb = $el->children[1]->content;}
    • preg_match_all('/value=&quot;([^&quot;]+)&quot;/msi',$emb,$obj);
    • $json[]='''.$obj[1][0].''';
    • }
    • ?>
    • <style type=&quot;text/css&quot;>
    • @import 'slideshareshowstyles.css';
    • #slideshareshowslideshow{background:url(<?php echo $img[0]->children[0]->content;?>) no-repeat center center;}
    • </style>
    • <div id=&quot;slideshareshow&quot;>
    • <ul id=&quot;slideshareslides&quot;><?php echo $slidesharelist; ?></ul>
    • </div>
    • <script type=&quot;text/javascript&quot; src=&quot;http://yui.yahooapis.com/2.3.1/build/yahoo-dom-event/yahoo-dom-event.js&quot;></script>
    • <script type=&quot;text/javascript&quot; src=&quot;swfobject.js&quot;></script>
    • < script type=&quot;text/javascript&quot;>
    • YAHOO.example.slideshareshow = function(){
    • var container = document.getElementById('slideshareshow');
    • YAHOO.util.Dom.addClass(container,'jsenabled');
    • var list = document.getElementById('slideshareslides');
    • var links = list.getElementsByTagName('a');
    • var displayContainer = document.createElement('div');
    • displayContainer.id = 'slideshareshowslideshow';
    • container.appendChild(displayContainer);
    • var current = null;
    • for(var i=0;links[i];i++){
    • YAHOO.util.Event.on(links[i],'click',show,i);
    • }
    • function show(e,i){
    • YAHOO.util.Dom.removeClass(current,'current');
    • current = this;
    • displayContainer.innerHTML = '';
    • var so = new SWFObject(slides[i], &quot;slideshareshow&quot;, &quot;425&quot;, &quot;355&quot;, &quot;8&quot;, &quot;#ffffff&quot;);
    • so.addParam(&quot;allowScriptAccess&quot;, &quot;always&quot;);
    • so.addParam(&quot;allowFullScreen&quot;, &quot;true&quot;);
    • so.write(displayContainer);
    • YAHOO.util.Dom.addClass(current,'current');
    • YAHOO.util.Event.stopEvent(e);
    • }
    • var slides=[<?php echo implode($json,','); ?>];
    • }();
    • </script>
    • http://www.wait-till-i.com/index.php?p=500
    • This is awesome! We are building badges for people to be able to display lists of their recent slideshows on their site, but it did not integrate the player. I love what you have done – well designed and well executed. I want it for my own site now.
    • I will post about it to our blog. And we will point to it when we release our own badges.
    • Thanks!
    • rashmi (SlideShare cofounder)
    • Anything else?
    • per aspera ad astra
    • &quot;through adversity to the stars&quot;
    • or
    • &quot;a rough road leads to the stars&quot;
    • per aspera ad astra
  • http:// developer.yahoo.com /flash/
    • Get Flashing and Flexing
    • Christian Heilmann
    • http://wait-till-i.com
    • http://icant.co.uk
    Thank you! http://creativecommons.org/licenses/by-sa/3.0/