SemanSemantic-UItic-UI/build/packaged/modules/video.js

/*  ******************************
  Module - Video Component
  Author: Jack Lukic
  Notes: First Commit June 30, 2012

  This is a video playlist and video embed plugin which helps
  provide helpers for adding embed code for vimeo and youtube and
  abstracting event handlers for each library

******************************  */

;(function ($, window, document, undefined) {

$.fn.video = function(parameters) {

  var
    $allModules     = $(this),

    settings        = ( $.isPlainObject(parameters) )
      ? $.extend(true, {}, $.fn.video.settings, parameters)
      : $.fn.video.settings,

    moduleSelector  = $allModules.selector || '',
    
    time            = new Date().getTime(),
    performance     = [],
    
    query           = arguments[0],
    methodInvoked   = (typeof query == 'string'),
    queryArguments  = [].slice.call(arguments, 1),
    
    selector        = settings.selector,
    className       = settings.className,
    error           = settings.error,
    metadata        = settings.metadata,
    namespace       = settings.namespace,
    
    eventNamespace  = '.' + namespace,
    moduleNamespace = namespace + '-module', 
    
    invokedResponse
  ;

  $allModules
    .each(function() {
      var
        $module         = $(this),
        $placeholder    = $module.find(selector.placeholder),
        $playButton     = $module.find(selector.playButton),
        $embed          = $module.find(selector.embed),
        
        element         = this,
        instance        = $module.data(moduleNamespace),
        module
      ;

      module = {

        initialize: function() {
          module.debug('Initializing video');
          $placeholder
            .on('click' + eventNamespace, module.play)
          ;
          $playButton
            .on('click' + eventNamespace, module.play)
          ;
          module.instantiate();
        },

        instantiate: function() {
          module.verbose('Storing instance of module', module);
          instance = module;
          $module
            .data(moduleNamespace, module)
          ;
        },

        destroy: function() {
          module.verbose('Destroying previous instance of video');
          $module
            .removeData(moduleNamespace)
            .off(eventNamespace)
          ;
        },

        // sets new video
        change: function(source, id, url) {
          module.debug('Changing video to ', source, id, url);
          $module
            .data(metadata.source, source)
            .data(metadata.id, id)
            .data(metadata.url, url)
          ;
          settings.onChange();
        },

        // clears video embed
        reset: function() {
          module.debug('Clearing video embed and showing placeholder');
          $module
            .removeClass(className.active)
          ;
          $embed
            .html(' ')
          ;
          $placeholder
            .show()
          ;
          settings.onReset();
        },

        // plays current video
        play: function() {
          module.debug('Playing video');
          var
            source = $module.data(metadata.source) || false, 
            url    = $module.data(metadata.url)    || false,
            id     = $module.data(metadata.id)     || false
          ;
          $embed
            .html( module.generate.html(source, id, url) )
          ;
          $module
            .addClass(className.active)
          ;
          settings.onPlay();
        },

        generate: {
          // generates iframe html
          html: function(source, id, url) {
            module.debug('Generating embed html');
            var
              width = (settings.width == 'auto')
                ? $module.width()
                : settings.width,
              height = (settings.height == 'auto')
                ? $module.height()
                : settings.height,
              html
            ;
            if(source && id) {
              if(source == 'vimeo') {
                html = ''
                  + '<iframe src="http://player.vimeo.com/video/' + id + '?=' + module.generate.url(source) + '"'
                  + ' width="' + width + '" height="' + height + '"'
                  + ' frameborder="0" webkitAllowFullScreen mozallowfullscreen allowFullScreen></iframe>'
                ;
              }
              else if(source == 'youtube') {
                html = ''
                  + '<iframe src="http://www.youtube.com/embed/' + id + '?=' + module.generate.url(source) + '"'
                  + ' width="' + width + '" height="' + height + '"'
                  + ' frameborder="0" webkitAllowFullScreen mozallowfullscreen allowFullScreen></iframe>'
                ;
              }
            }
            else if(url) {
              html = ''
                + '<iframe src="' + url + '"'
                + ' width="' + width + '" height="' + height + '"'
                + ' frameborder="0" webkitAllowFullScreen mozallowfullscreen allowFullScreen></iframe>'
              ;
            }
            else {
              module.error(error.noVideo);
            }
            return html;
          },

          // generate url parameters
          url: function(source) {
            var
              api      = (settings.api)
                ? 1
                : 0,
              autoplay = (settings.autoplay)
                ? 1
                : 0,
              hd       = (settings.hd)
                ? 1
                : 0,
              showUI   = (settings.showUI)
                ? 1
                : 0,
              // opposite used for some params
              hideUI   = !(settings.showUI)
                ? 1
                : 0,
              url = ''
            ;
            if(source == 'vimeo') {
              url = ''
                +      'api='      + api
                + '&amp;title='    + showUI
                + '&amp;byline='   + showUI
                + '&amp;portrait=' + showUI
                + '&amp;autoplay=' + autoplay
              ;
              if(settings.color) {
                url += '&amp;color=' + settings.color;
              }
            }
            if(source == 'ustream') {
              url = ''
                + 'autoplay=' + autoplay
              ;
              if(settings.color) {
                url += '&amp;color=' + settings.color;
              }
            }
            else if(source == 'youtube') {
              url = ''
                +      'enablejsapi=' + api
                + '&amp;autoplay='    + autoplay
                + '&amp;autohide='    + hideUI
                + '&amp;hq='          + hd
                + '&amp;modestbranding=1'
              ;
              if(settings.color) {
                url += '&amp;color=' + settings.color;
              }
            }
            return url;
          }
        },

        setting: function(name, value) {
          if(value !== undefined) {
            if( $.isPlainObject(name) ) {
              $.extend(true, settings, name);
            }
            else {
              settings[name] = value;
            }
          }
          else {
            return settings[name];
          }
        },
        internal: function(name, value) {
          if(value !== undefined) {
            if( $.isPlainObject(name) ) {
              $.extend(true, module, name);
            }
            else {
              module[name] = value;
            }
          }
          else {
            return module[name];
          }
        },
        debug: function() {
          if(settings.debug) {
            if(settings.performance) {
              module.performance.log(arguments);
            }
            else {
              module.debug = Function.prototype.bind.call(console.info, console, settings.moduleName + ':');
              module.debug.apply(console, arguments);
            }
          }
        },
        verbose: function() {
          if(settings.verbose && settings.debug) {
            if(settings.performance) {
              module.performance.log(arguments);
            }
            else {
              module.verbose = Function.prototype.bind.call(console.info, console, settings.moduleName + ':');
              module.verbose.apply(console, arguments);
            }
          }
        },
        error: function() {
          module.error = Function.prototype.bind.call(console.error, console, settings.moduleName + ':');
          module.error.apply(console, arguments);
        },
        performance: {
          log: function(message) {
            var
              currentTime,
              executionTime,
              previousTime
            ;
            if(settings.performance) {
              currentTime   = new Date().getTime();
              previousTime  = time || currentTime;
              executionTime = currentTime - previousTime;
              time          = currentTime;
              performance.push({
                'Element'        : element,
                'Name'           : message[0],
                'Arguments'      : [].slice.call(message, 1) || '',
                'Execution Time' : executionTime
              });
            }
            clearTimeout(module.performance.timer);
            module.performance.timer = setTimeout(module.performance.display, 100);
          },
          display: function() {
            var
              title = settings.moduleName + ':',
              totalTime = 0
            ;
            time = false;
            clearTimeout(module.performance.timer);
            $.each(performance, function(index, data) {
              totalTime += data['Execution Time'];
            });
            title += ' ' + totalTime + 'ms';
            if(moduleSelector) {
              title += ' \'' + moduleSelector + '\'';
            }
            if( (console.group !== undefined || console.table !== undefined) && performance.length > 0) {
              console.groupCollapsed(title);
              if(console.table) {
                console.table(performance);
              }
              else {
                $.each(performance, function(index, data) {
                  console.log(data['Name'] + ': ' + data['Execution Time']+'ms');
                });
              }
              console.groupEnd();
            }
            performance = [];
          }
        },
        invoke: function(query, passedArguments, context) {
          var
            maxDepth,
            found,
            response
          ;
          passedArguments = passedArguments || queryArguments;
          context         = element         || context;
          if(typeof query == 'string' && instance !== undefined) {
            query    = query.split(/[\. ]/);
            maxDepth = query.length - 1;
            $.each(query, function(depth, value) {
              var camelCaseValue = (depth != maxDepth)
                ? value + query[depth + 1].charAt(0).toUpperCase() + query[depth + 1].slice(1)
                : query
              ;
              if( $.isPlainObject( instance[value] ) && (depth != maxDepth) ) {
                instance = instance[value];
              }
              else if( $.isPlainObject( instance[camelCaseValue] ) && (depth != maxDepth) ) {
                instance = instance[camelCaseValue];
              }
              else if( instance[value] !== undefined ) {
                found = instance[value];
                return false;
              }
              else if( instance[camelCaseValue] !== undefined ) {
                found = instance[camelCaseValue];
                return false;
              }
              else {
                module.error(error.method);
                return false;
              }
            });
          }
          if ( $.isFunction( found ) ) {
            response = found.apply(context, passedArguments);
          }
          else if(found !== undefined) {
            response = found;
          }
          if($.isArray(invokedResponse)) {
            invokedResponse.push(response);
          }
          else if(typeof invokedResponse == 'string') {
            invokedResponse = [invokedResponse, response];
          }
          else if(response !== undefined) {
            invokedResponse = response;
          }
          return found;
        }
      };

      if(methodInvoked) {
        if(instance === undefined) {
          module.initialize();
        }
        module.invoke(query);
      }
      else {
        if(instance !== undefined) {
          module.destroy();
        }
        module.initialize();
      }
    })
  ;
  return (invokedResponse !== undefined)
    ? invokedResponse
    : this
  ;
};

$.fn.video.settings = {

  moduleName  : 'Video',
  namespace   : 'video',

  debug       : true,
  verbose     : true,
  performance : true,
  

  metadata    : {
    source : 'source',
    id     : 'id',
    url    : 'url'
  },
  
  onPlay   : function(){},
  onReset  : function(){},
  onChange : function(){},
  
  // callbacks not coded yet (needs to use jsapi)
  onPause  : function() {},
  onStop   : function() {},
  
  width    : 'auto',
  height   : 'auto',
  
  autoplay : false,
  color    : '#442359',
  hd       : true,
  showUI   : false,
  api      : true,
  
  error      : {
    noVideo     : 'No video specified',
    method      : 'The method you called is not defined'
  },
  
  className   : {
    active      : 'active'
  },
  
  selector    : {
    embed       : '.embed',
    placeholder : '.placeholder',
    playButton  : '.play'
  }
};


})( jQuery, window , document );