BVJS

Beyond the DOM:
Sane Structure for JS Apps
Rebecca Murphey • @rmurphey • BVJS 2012

Wednesday, March 7, 12

github.com/rmurphey/bvjs


function ObjInlineDown(e) {
if( is.ie ) e = event
if( is.ie && !is.ieMac && e.button!=1 && e.button!=2 ) return
if( is.ieMac && e.button != 0 ) return
if( is.ns && !is.ns4 && e.button!=0 && e.button!=2 ) return
if( is.ns4 && e.which!=1 && e.which!=3 ) return
this.onSelect()
this.onDown()
}

function ObjInlineUp(e) {
if( is.ie ) e = event
if( is.ie && !is.ieMac && e.button!=1 && e.button!=2 ) return
if( is.ieMac && e.button!=0 ) return
if( is.ns && !is.ns4 && !is.nsMac && e.button!=0 && e.button!=2 ) return
if( is.ns4 && e.which!=1 && e.which!=3 ) return
if( ( !is.ns4 && e.button==2 ) || ( is.ns4 && e.which==3 ) )
{
if( this.hasOnRUp )
{
document.oncontextmenu = ocmNone
this.onRUp()
setTimeout( "document.oncontextmenu = ocmOrig", 100)
}
}
else if( this.hasOnUp )
this.onUp()
}


<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Twitter Search</title>
<link rel="stylesheet" href="/assets/css/index.css">
</head>

<body>
<h1>Twitter Search</h1>
<div id="searchInput">
<form>
<input placeholder="enter your search term">
<button>submit</button>
</form>
</div>
<ul id="searchResults"></ul>

<script src="/assets/js/libs/jquery.js"></script>
<script src="/assets/js/app.js"></script>
</body>
</html>


$('#searchInput form').submit(function(e){
e.preventDefault();

var term = $('#searchInput input').val(),
req = $.getJSON('http://search.twitter.com/search.json?callback=?&q=' +
escape(term));

req.then(function(resp) {
var resultsHtml = $.map(resp.results, function(r) {
return '<li>' +
'<p class="tweet">' + r.text + '</p>' +
'<p class="username">' + r.from_user + '</p>' +
'</li>';
}).join('');

$('#searchResults').html(resultsHtml);
});
});


// NAVIGATION
function togglePage(section) {
// if the clicked section is already the current section AND we're in full page mode
// minimize the current tab
if (jQuery('#md_tab_'+ section).hasClass('current') && jQuery('#md_tab_'+ section + ' a').hasClass('md_fullpage')) {
// alert('clicked section is current section AND fullpage mode is active; teaser should load');
// Minimize
jQuery('#md_tabs_navigation a').removeClass('md_fullpage');
jQuery('.md_body').hide();
jQuery('#md_feature').slideDown('normal',function(){
var bodyContent = jQuery('#md_body_'+ section);
bodyContent.fadeOut('normal',function(){
jQuery('#md_tabs_navigation a').each(function(){
var thisSection = jQuery(this).html().replace('<span<','').replace('</span<','');
var thisSection_comp = thisSection.toLowerCase().replace(' ','_');
jQuery('#md_body_'+ thisSection_comp).load(
'/app/modules/info/loadTeaser.php?sect='+ thisSection_comp,
function(){
tb_init('.md_body a.thickbox, .md_body area.thickbox, .md_body input.thickbox');
bodyContent.animate({ height: 'toggle', opacity: 'toggle' },"slow");
}
);
});
});
});
jQuery('#expandtabs span').empty().append('Expand Tabs');
} else {
// if the clicked section is NOT the current section OR we're NOT in full page mode
// then let's go to full page mode and show the whole tab
// Maximize
// alert('clicked section is not the current section OR full page mode is not active; full section should load');
jQuery('#md_tabs_navigation li').removeClass('current');
jQuery('#md_tab_'+ section).addClass('current');
jQuery('#md_tabs_navigation a').addClass('md_fullpage');
jQuery('#md_feature').slideUp('normal',function(){
bodyContent.empty();
var pageLoader = 'info/loadSection.php?sect='+ section;
if (section == 'contact_us') {
pageLoader = 'contact/loadContactForm.php?form_id=1';
}
bodyContent.load('/app/modules/'+ pageLoader,function(){
// ADD THICKBOXES
$recent_news_links = jQuery('ul.md_news li a.recent_news_link');
$recent_news_links
.unbind('click')
.each(function(){
var hrefMod = this.href;
hrefMod = hrefMod.replace(/article/,'loadNews').replace(/storyid/,'id');
this.href = hrefMod;
})
.click(function(){
var t = this.title || this.name || null;
var a = this.href || this.alt;
var g = this.rel || false;
tb_show(t,a,g);
this.blur();
return false;
});
Wednesday, March 7, 12 // ACCORDION

$('#btn-co-complete').live('click', function() {
jobCompleted = true;
$.mobile.changePage('#page-clockout-deficiency', {changeHash: false});
});

$('#btn-co-nocomplete').live('click', function() {
jobCompleted = false;
$.mobile.changePage('#page-clockout-deficiency', {changeHash: false});
});

$('#btn-co-nodef').live('click', function() {
clockOut(activeJob, { completed:jobCompleted }, DW_JOB_COMPLETED);
});

$('#btn-co-otherdef').live('click', function() {
$.mobile.changePage('#page-clockout-redtag', {changeHash: false});
});

$('#btn-co-redtag').live('click', function() {
clockOut(activeJob, { completed:jobCompleted, redTag:true }, DW_JOB_FOLLOWUP)
});

$('#btn-co-noredtag').live('click', function() {
$('#page-clockout-resolve').page();
$.mobile.changePage('#page-clockout-resolve', {changeHash: false});
});

$('#btn-clockout-resolve').live('click', function() {
switch ($('#page-clockout-resolve :checked').val()) {
case 'return':
Wednesday, March 7, 12 clockOut(activeJob, { completed:false }, DW_JOB_RETURN);

search input $('#searchInput form').submit(function(e){
e.preventDefault();

var term = $('#searchInput input').val(),
req = $.getJSON('http://search.twitter.com/searc
escape(term));

search data var resultsHtml = $.map(resp.results, function(r)
return '<li>' +
'<p class="tweet">' + r.text + '</p>' +
'<p class="username">' + r.from_user + '</p>'
'</li>';
}).join('');

$('#searchResults').html(resultsHtml);
search results });
});


require.config({
deps: ["main"],

paths: {
// JavaScript folders
libs: "../assets/js/libs",
plugins: "../assets/js/plugins",

// Libraries
jquery: "../assets/js/libs/jquery",
underscore: "../assets/js/libs/underscore",
backbone: "../assets/js/libs/backbone"
}
});


define([
"components/page",
"components/search/input",
"components/search/results",
], function(Page, SearchInput, SearchResults) {
return {
// ...
};
});


// NAVIGATION
function togglePage(section) {
// if the clicked section is already the current section AND we're in full page mode
// minimize the current tab
if (jQuery('#md_tab_'+ section).hasClass('current') && jQuery('#md_tab_'+ section + ' a').hasClass('md_fullpage')) {
// alert('clicked section is current section AND fullpage mode is active; teaser should load');
// Minimize
jQuery('#md_tabs_navigation a').removeClass('md_fullpage');
jQuery('#md_feature').slideDown('normal',function(){
jQuery('#md_tabs_navigation a').each(function(){
var thisSection = jQuery(this).html().replace('<span<','').replace('</span<','');
var thisSection_comp = thisSection.toLowerCase().replace(' ','_');
jQuery('#md_body_'+ thisSection_comp).load(
'/app/modules/info/loadTeaser.php?sect='+ thisSection_comp,
function(){
bodyContent.animate({ height: 'toggle', opacity: 'toggle' },"slow");
}
);
});
});
});
jQuery('#expandtabs span').empty().append('Expand Tabs');
} else {
// if the clicked section is NOT the current section OR we're NOT in full page mode
// then let's go to full page mode and show the whole tab
// Maximize
// alert('clicked section is not the current section OR full page mode is not active; full section should load');
jQuery('#md_tabs_navigation li').removeClass('current');
jQuery('#md_tab_'+ section).addClass('current');
jQuery('#md_tabs_navigation a').addClass('md_fullpage');
jQuery('#md_feature').slideUp('normal',function(){
bodyContent.empty();
var pageLoader = 'info/loadSection.php?sect='+ section;
if (section == 'contact_us') {
pageLoader = 'contact/loadContactForm.php?form_id=1';
}
bodyContent.load('/app/modules/'+ pageLoader,function(){
// ADD THICKBOXES
$recent_news_links = jQuery('ul.md_news li a.recent_news_link');
$recent_news_links
.unbind('click')
.each(function(){
var hrefMod = this.href;
hrefMod = hrefMod.replace(/article/,'loadNews').replace(/storyid/,'id');
this.href = hrefMod;
})
.click(function(){
var t = this.title || this.name || null;
var a = this.href || this.alt;
var g = this.rel || false;
tb_show(t,a,g);
this.blur();
return false;
});
// ACCORDION
jQuery('div.applemenu div.submenu').hide();
jQuery('div.applemenu div.silverheader < a').click(
Wednesday, March 7, 12 function(){

component controller

component

service

components display data, observe input, and
broadcast messages that controllers can react
to; may also provide an API for updating



component

service

controllers set up components and broker
communications between them, eliminating
the need for direct communication



component

service

services expose an API for controllers
to retrieve and persist data


controller

twitter search


components display data, observe input, and
broadcast messages that controllers can react
to; may also provide an API for updating


define([
"components/base"
], function(Component) {
return Component({
template : "app/templates/search/input.html",
className : 'search-input',

events : {
"submit form" : "_onSubmit"
},

_onSubmit : function(e) {
e.preventDefault();
var term = $.trim(this.$el.find('input')[0].value);
if (!term) { return; }
this.trigger('search', term);
}
});
});


<form>
<input placeholder="enter your search term">
<button>submit</button>
</form>


controllers set up components and broker
communications between them, eliminating
the need for direct communication


<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width,initial-scale=1">

<title>Searchr</title>


<link rel="stylesheet" href="/assets/css/index.css">
</head>

<body>

<div role="main" id="main"></div>


<script data-main="app/config" src="/assets/js/libs/require.js"></
script>
</body>
</html>

var Router = Backbone.Router.extend({
routes: {
"": "twitter",
":hash": "twitter"
},

twitter : function(hash) {
SearchController.init();
}
});


define([
"components/page", "components/search/input",
"components/search/results", "services/twitter"
], function(Page, SearchInput, SearchResults, twitterService) {
return {
init : function() {
this.page = new Page({ template : 'app/templates/pages/search.html' });
this.page.render().then(_.bind(this.setupPage, this));
},

setupPage : function() {
var p = this.page;
this.searchInput = p.place(new SearchInput(), 'searchInput');
this.searchResults = p.place(new SearchResults(), 'searchResults');
this.searchInput.on('search', _.bind(this.handleSearch, this));
},

handleSearch : function(term) {
twitterService.query(term).then(_.bind(this.showResults, this));
},

showResults : function(results) {
this.searchResults.show(results);
}
};
});


services expose an API for controllers
to interact with data


define([
"use!backbone"
], function(Backbone) {
var TwitterResult = Backbone.Model.extend({
// ...
});

var TwitterResults = Backbone.Collection.extend({
type : 'twitter', model : TwitterResult
});

return {
query : function(term) {
var req = $.getJSON('http://search.twitter.com/search.json?callback=?&q=' +
escape(term)),
dfd = $.Deferred();

dfd.resolve(new TwitterResults(resp.results));
});

return dfd.promise();
}
};
});


“Writing to be read means writing code ... with
the idea that someone else will read it. is
fact alone will make you edit and think of better
ways to solve the problem you have at hand.”
Stoyan Stefanov, “JavaScript Patterns”


rmurphey.com • @rmurphey


BVJS

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