client/catalog/catalog.js - ndn-atmos - Gitiles

 var catalog = "/catalog/myUniqueName";
 var config = {
   host: "atmos-csu.research-lan.colostate.edu",
   port: 9696
 };

 //Run when the document loads.
 $(function () {
   new Atmos(catalog, config);
 });

 var Atmos = (function(){
   "use strict";
   /**
    * Atmos
    * @version 2.0
    *
    * Configures an Atmos object. This manages the atmos interface.
    *
    * @constructor
    * @param {string} catalog - NDN path
    * @param {Object} config - Object of configuration options for a Face.
    */
   function Atmos(catalog, config){

     //Internal variables.
     this.results = [];
     this.resultCount = 0;
     this.name = null;
     this.page = 0;
     this.lastPage = -1;
     //this.itemsPerPage = 25; //TODO

     this.catalog = catalog;

     this.face = new Face(config);
     this.categories = $('#side-menu');
     this.resultTable = $('#resultTable');
     this.filters = $('#filters');
     this.searchInput = $('#search');
     this.searchBar = $('#searchBar');
     this.searchButton = $('#searchButton');
     this.pagers = $('.pager');
     this.alerts = $('#alerts');

     var scope = this;

     this.resultTable.on('click', '.interest-button', function(){
       var button = $(this);

       if (button.is(':disabled')){
         console.warn("Attempt to request again!");
       }

       var name = button.parent().prev().text();
       var interest = new Interest(new Name('/retrieve' + name));
       scope.face.expressInterest(interest, function(){}, function(){});

       button.text("Requested!")
         .removeClass('btn-primary')
         .addClass('btn-default')
         .addClass('disabled')
         .prop('disabled', true);
     });

     //Filter setup
     $.getJSON("search_catagories.json").done(function (data) {
       $.each(data, function (pageSection, contents) {
         if (pageSection == "SearchCatagories") {
           $.each(contents, function (category, searchOptions) {
             //Create the category
             var e = $('<li><a href="#">' + category.replace(/\_/g, " ") + '</a><ul class="subnav nav nav-pills nav-stacked"></ul></li>');

             var sub = e.find('ul.subnav');
             $.each(searchOptions, function(index, name){
               //Create the filter list inside the category
               var item = $('<li><a href="#">' + name + '</a></li>');
               sub.append(item);
               item.click(function(){ //Click on the side menu filters
                 if (item.hasClass('active')){ //Does the filter already exist?
                   item.removeClass('active');
                   scope.filters.find(':contains(' + category + ':' + name + ')').remove();
                 } else { //Add a filter
                   item.addClass('active');
                   var filter = $('<span class="label label-default"></span>');
                   filter.text(category + ':' + name);

                   scope.filters.append(filter);

                   filter.click(function(){ //Click on a filter
                     filter.remove();
                     item.removeClass('active');
                   });
                 }

               });
             });

             //Toggle the menus. (Only respond when the immediate tab is clicked.)
             e.find('> a').click(function(){
               scope.categories.find('.subnav').slideUp();
               var t = $(this).siblings('.subnav');
               if ( !t.is(':visible') ){ //If the sub menu is not visible
                 t.slideDown(function(){
                   t.triggerHandler('focus');
                 }); //Make it visible and look at it.
               }
             });

             scope.categories.append(e);

           });
         }
       });
     });

     this.searchInput.autoComplete(function(field, callback){
       scope.autoComplete(field, callback);
     });

     this.searchBar.submit(function(e){
       e.preventDefault();
       console.warn("This feature is incomplete.");
     });

     this.searchButton.click(function(){
       console.log("Search Button Pressed");
       scope.search();
     });

     this.pagers.find('.next').click(function(){
       if (!$(this).hasClass('disabled')){
         scope.getResults(scope.page + 1);
       }
     });
     this.pagers.find('.previous').click(function(){
       if (!$(this).hasClass('disabled')){
         scope.getResults(scope.page - 1);
       }
     });

   }

   Atmos.prototype.search = function(){

     var filters = this.getFilters();

     console.log("Search started!", this.searchInput.val(), filters);

     console.log("Initiating query");

     this.results = []; //Drop any old results.
     this.resultTable.empty();

     var scope = this;

     this.query(this.catalog, filters,
     function(interest, data){ //Response function
       console.log("Query Response:", interest, data);

       var parameters = JSON.stringify(filters);

       var ack = data.getName();

       scope.name = new Name(scope.catalog).append("query-results").append(parameters).append(ack.get(-3)).append(ack.get(-2));

       scope.getResults(0);

     }, function(interest){ //Timeout function
       console.warn("Request failed! Timeout");
       scope.createAlert("Request timed out. \"" + interest.getName().toUri() + "\" See console for details.");
     });

   }

   Atmos.prototype.autoComplete = function(field, callback){

     if (this.searchInput.val().length === 0 && !filters.hasOwnProperty()){
       if (!this.searchBar.hasClass('has-error')){
         this.searchBar.addClass('has-error').append('<span class="help-block">A filter or search value is required!</span>');
       }
       return;
     } else {
       this.searchBar.removeClass('has-error').find('.help-block').fadeOut(function(){$(this).remove()});
     }

     var scope = this;

     this.query(this.catalog, {"?": field},
     function(interest, data){

       var ack = data.getName();

       var name = new Name(scope.catalog).append('query-results').append(JSON.stringify({"?": field})).append(ack.get(-3)).append(ack.get(-2));

       scope.face.expressInterest(new Interest(name).setInterestLifetimeMilliseconds(5000),
       function(interest, data){

         if (data.getContent().length !== 0){
           var options = JSON.parse(data.getContent().toString().replace(/[\n\0]/g, "")).next.map(function(element){
             return field + element;
           });
           callback(options);
         }

       }, function(interest){
         console.warn("Interest timed out!", interest);
         scope.createAlert("Request timed out. \"" + interest.getName().toUri() + "\" See console for details.");
       });

     }, function(interest){
       console.error("Request failed! Timeout", interest);
       scope.createAlert("Request timed out. \"" + interest.getName().toUri() + "\" See console for details.");
     });

   }

   Atmos.prototype.showResults = function(resultIndex) {

     var results = $('<tr><td>' + this.results[resultIndex].join('</td><td><button class="interest-button btn btn-primary btn-sm">Retrieve</button></td></tr><tr><td>') +
     '</td><td><button class="interest-button btn btn-primary btn-sm">Retrieve</button></td></tr>'); //Fastest way to generate the table.

     this.resultTable.empty().append(results);

     this.pagers.find('.totalResults').text('(Page' + (resultIndex + 1) + ') Showing ' + this.results[resultIndex].length + ' of ' + this.resultCount + ' results');

     if (resultIndex === this.lastPage) {
       this.pagers.find('.next').addClass('disabled');
     }

     if (resultIndex === 0){
       this.pagers.find('.next').removeClass('disabled');
       this.pagers.find('.previous').addClass('disabled');
     } else if (resultIndex === 1) {
       this.pagers.find('.previous').removeClass('disabled');
     }

   }

   Atmos.prototype.getResults = function(index){

     if (this.results[index]){
       //console.log("We already have index", index);
       this.page = index;
       this.showResults(index);
       return;
     }

     if (this.name === null) {
       console.error("This shouldn't be reached! We are getting results before a search has occured!");
       throw new Error("Illegal State");
     }

     var first = new Name(this.name).appendSegment(index);

     console.log("Requesting data index: (", index, ") at ", first.toUri());

     var scope = this;

     this.face.expressInterest(new Interest(first).setInterestLifetimeMilliseconds(5000),
       function(interest, data){ //Response

         if (data.getContent().length === 0){
           console.log("Empty response.");
           return;
         }

         if (data.getName().get(-1).equals(data.getMetaInfo().getFinalBlockId())) { //Final page.
           scope.lastPage = index;
           //The next buttons will be disabled by showResults.
         }

         var content = JSON.parse(data.getContent().toString().replace(/[\n\0]/g,""));

         var results = scope.results[index] = content.results;

         scope.resultCount = content.resultCount;

         scope.pagers.find('.totalResults').text(scope.resultCount + " Results");

         //console.log("Got results:", results);

         scope.page = index;

         if (!results){
           console.log("No results were found!");
           return;
         }

         scope.showResults(index);

       },
       function(interest){ //Timeout
         console.error("Failed to retrieve results: timeout", interest);
         scope.createAlert("Request timed out. \"" + interest.getName().toUri() + "\" See console for details.");
       }
     );

   }

   Atmos.prototype.query = function(prefix, parameters, callback, timeout) {

     var queryPrefix = new Name(prefix);
     queryPrefix.append("query");

     var jsonString = JSON.stringify(parameters);
     queryPrefix.append(jsonString);

     var queryInterest = new Interest(queryPrefix);
     queryInterest.setInterestLifetimeMilliseconds(4000);

     this.face.expressInterest(queryInterest, callback, timeout);

   }

   /**
    * This function returns a map of all the categories active filters.
    * @return {Object<string, string>}
    */
   Atmos.prototype.getFilters = function(){
     var filters = this.filters.children().toArray().reduce(function(prev, current){
       var data = $(current).text().split(/:/);
       prev[data[0]] = data[1];
       return prev;
     }, {}); //Collect a map<category, filter>.
     //TODO Make the return value map<category, Array<filter>>
     return filters;
   }

   /**
    * Creates a closable alert for the user.
    *
    * @param {string} message
    * @param {string} type - Override the alert type.
    */
   Atmos.prototype.createAlert = function(message, type) {

     var alert = $('<div class="alert"><div>');
     alert.addClass(type?type:'alert-info');
     alert.text(message);
     alert.append(Atmos.closeButton);

     this.alerts.append(alert);
   }
   Atmos.closeButton = '<button type="button" class="close" data-dismiss="alert" aria-label="Close"><span aria-hidden="true">&times;</span></button>';

   return Atmos;

 })();
	var catalog = "/catalog/myUniqueName";
	var config = {
	host: "atmos-csu.research-lan.colostate.edu",
	port: 9696
	};

	//Run when the document loads.
	$(function () {
	new Atmos(catalog, config);
	});

	var Atmos = (function(){
	"use strict";
	/**
	* Atmos
	* @version 2.0
	*
	* Configures an Atmos object. This manages the atmos interface.
	*
	* @constructor
	* @param {string} catalog - NDN path
	* @param {Object} config - Object of configuration options for a Face.
	*/
	function Atmos(catalog, config){

	//Internal variables.
	this.results = [];
	this.resultCount = 0;
	this.name = null;
	this.page = 0;
	this.lastPage = -1;
	//this.itemsPerPage = 25; //TODO

	this.catalog = catalog;

	this.face = new Face(config);
	this.categories = $('#side-menu');
	this.resultTable = $('#resultTable');
	this.filters = $('#filters');
	this.searchInput = $('#search');
	this.searchBar = $('#searchBar');
	this.searchButton = $('#searchButton');
	this.pagers = $('.pager');
	this.alerts = $('#alerts');

	var scope = this;

	this.resultTable.on('click', '.interest-button', function(){
	var button = $(this);

	if (button.is(':disabled')){
	console.warn("Attempt to request again!");
	}

	var name = button.parent().prev().text();
	var interest = new Interest(new Name('/retrieve' + name));
	scope.face.expressInterest(interest, function(){}, function(){});

	button.text("Requested!")
	.removeClass('btn-primary')
	.addClass('btn-default')
	.addClass('disabled')
	.prop('disabled', true);
	});

	//Filter setup
	$.getJSON("search_catagories.json").done(function (data) {
	$.each(data, function (pageSection, contents) {
	if (pageSection == "SearchCatagories") {
	$.each(contents, function (category, searchOptions) {
	//Create the category
	var e = $('<li><a href="#">' + category.replace(/\_/g, " ") + '</a><ul class="subnav nav nav-pills nav-stacked"></ul></li>');

	var sub = e.find('ul.subnav');
	$.each(searchOptions, function(index, name){
	//Create the filter list inside the category
	var item = $('<li><a href="#">' + name + '</a></li>');
	sub.append(item);
	item.click(function(){ //Click on the side menu filters
	if (item.hasClass('active')){ //Does the filter already exist?
	item.removeClass('active');
	scope.filters.find(':contains(' + category + ':' + name + ')').remove();
	} else { //Add a filter
	item.addClass('active');
	var filter = $('<span class="label label-default"></span>');
	filter.text(category + ':' + name);

	scope.filters.append(filter);

	filter.click(function(){ //Click on a filter
	filter.remove();
	item.removeClass('active');
	});
	}

	});
	});

	//Toggle the menus. (Only respond when the immediate tab is clicked.)
	e.find('> a').click(function(){
	scope.categories.find('.subnav').slideUp();
	var t = $(this).siblings('.subnav');
	if ( !t.is(':visible') ){ //If the sub menu is not visible
	t.slideDown(function(){
	t.triggerHandler('focus');
	}); //Make it visible and look at it.
	}
	});

	scope.categories.append(e);

	});
	}
	});
	});

	this.searchInput.autoComplete(function(field, callback){
	scope.autoComplete(field, callback);
	});

	this.searchBar.submit(function(e){
	e.preventDefault();
	console.warn("This feature is incomplete.");
	});

	this.searchButton.click(function(){
	console.log("Search Button Pressed");
	scope.search();
	});

	this.pagers.find('.next').click(function(){
	if (!$(this).hasClass('disabled')){
	scope.getResults(scope.page + 1);
	}
	});
	this.pagers.find('.previous').click(function(){
	if (!$(this).hasClass('disabled')){
	scope.getResults(scope.page - 1);
	}
	});

	}

	Atmos.prototype.search = function(){

	var filters = this.getFilters();

	console.log("Search started!", this.searchInput.val(), filters);

	console.log("Initiating query");

	this.results = []; //Drop any old results.
	this.resultTable.empty();

	var scope = this;

	this.query(this.catalog, filters,
	function(interest, data){ //Response function
	console.log("Query Response:", interest, data);

	var parameters = JSON.stringify(filters);

	var ack = data.getName();

	scope.name = new Name(scope.catalog).append("query-results").append(parameters).append(ack.get(-3)).append(ack.get(-2));

	scope.getResults(0);

	}, function(interest){ //Timeout function
	console.warn("Request failed! Timeout");
	scope.createAlert("Request timed out. \"" + interest.getName().toUri() + "\" See console for details.");
	});

	}

	Atmos.prototype.autoComplete = function(field, callback){

	if (this.searchInput.val().length === 0 && !filters.hasOwnProperty()){
	if (!this.searchBar.hasClass('has-error')){
	this.searchBar.addClass('has-error').append('<span class="help-block">A filter or search value is required!</span>');
	}
	return;
	} else {
	this.searchBar.removeClass('has-error').find('.help-block').fadeOut(function(){$(this).remove()});
	}

	var scope = this;

	this.query(this.catalog, {"?": field},
	function(interest, data){

	var ack = data.getName();

	var name = new Name(scope.catalog).append('query-results').append(JSON.stringify({"?": field})).append(ack.get(-3)).append(ack.get(-2));

	scope.face.expressInterest(new Interest(name).setInterestLifetimeMilliseconds(5000),
	function(interest, data){

	if (data.getContent().length !== 0){
	var options = JSON.parse(data.getContent().toString().replace(/[\n\0]/g, "")).next.map(function(element){
	return field + element;
	});
	callback(options);
	}

	}, function(interest){
	console.warn("Interest timed out!", interest);
	scope.createAlert("Request timed out. \"" + interest.getName().toUri() + "\" See console for details.");
	});

	}, function(interest){
	console.error("Request failed! Timeout", interest);
	scope.createAlert("Request timed out. \"" + interest.getName().toUri() + "\" See console for details.");
	});

	}

	Atmos.prototype.showResults = function(resultIndex) {

	var results = $('<tr><td>' + this.results[resultIndex].join('</td><td><button class="interest-button btn btn-primary btn-sm">Retrieve</button></td></tr><tr><td>') +
	'</td><td><button class="interest-button btn btn-primary btn-sm">Retrieve</button></td></tr>'); //Fastest way to generate the table.

	this.resultTable.empty().append(results);

	this.pagers.find('.totalResults').text('(Page' + (resultIndex + 1) + ') Showing ' + this.results[resultIndex].length + ' of ' + this.resultCount + ' results');

	if (resultIndex === this.lastPage) {
	this.pagers.find('.next').addClass('disabled');
	}

	if (resultIndex === 0){
	this.pagers.find('.next').removeClass('disabled');
	this.pagers.find('.previous').addClass('disabled');
	} else if (resultIndex === 1) {
	this.pagers.find('.previous').removeClass('disabled');
	}

	}

	Atmos.prototype.getResults = function(index){

	if (this.results[index]){
	//console.log("We already have index", index);
	this.page = index;
	this.showResults(index);
	return;
	}

	if (this.name === null) {
	console.error("This shouldn't be reached! We are getting results before a search has occured!");
	throw new Error("Illegal State");
	}

	var first = new Name(this.name).appendSegment(index);

	console.log("Requesting data index: (", index, ") at ", first.toUri());

	var scope = this;

	this.face.expressInterest(new Interest(first).setInterestLifetimeMilliseconds(5000),
	function(interest, data){ //Response

	if (data.getContent().length === 0){
	console.log("Empty response.");
	return;
	}

	if (data.getName().get(-1).equals(data.getMetaInfo().getFinalBlockId())) { //Final page.
	scope.lastPage = index;
	//The next buttons will be disabled by showResults.
	}

	var content = JSON.parse(data.getContent().toString().replace(/[\n\0]/g,""));

	var results = scope.results[index] = content.results;

	scope.resultCount = content.resultCount;

	scope.pagers.find('.totalResults').text(scope.resultCount + " Results");

	//console.log("Got results:", results);

	scope.page = index;

	if (!results){
	console.log("No results were found!");
	return;
	}

	scope.showResults(index);

	},
	function(interest){ //Timeout
	console.error("Failed to retrieve results: timeout", interest);
	scope.createAlert("Request timed out. \"" + interest.getName().toUri() + "\" See console for details.");
	}
	);

	}

	Atmos.prototype.query = function(prefix, parameters, callback, timeout) {

	var queryPrefix = new Name(prefix);
	queryPrefix.append("query");

	var jsonString = JSON.stringify(parameters);
	queryPrefix.append(jsonString);

	var queryInterest = new Interest(queryPrefix);
	queryInterest.setInterestLifetimeMilliseconds(4000);

	this.face.expressInterest(queryInterest, callback, timeout);

	}

	/**
	* This function returns a map of all the categories active filters.
	* @return {Object<string, string>}
	*/
	Atmos.prototype.getFilters = function(){
	var filters = this.filters.children().toArray().reduce(function(prev, current){
	var data = $(current).text().split(/:/);
	prev[data[0]] = data[1];
	return prev;
	}, {}); //Collect a map<category, filter>.
	//TODO Make the return value map<category, Array<filter>>
	return filters;
	}

	/**
	* Creates a closable alert for the user.
	*
	* @param {string} message
	* @param {string} type - Override the alert type.
	*/
	Atmos.prototype.createAlert = function(message, type) {

	var alert = $('<div class="alert"><div>');
	alert.addClass(type?type:'alert-info');
	alert.text(message);
	alert.append(Atmos.closeButton);

	this.alerts.append(alert);
	}
	Atmos.closeButton = '<button type="button" class="close" data-dismiss="alert" aria-label="Close"><span aria-hidden="true">×</span></button>';

	return Atmos;

	})();