Created
August 29, 2013 04:08
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app.js from eimg/bb-todo
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var app = {}; | |
// Model | |
app.Todo = Backbone.Model.extend({ | |
defaults: { | |
title: '', | |
done: false | |
}, | |
toggle: function() { | |
this.save({ | |
done: !this.get('done') | |
}); | |
} | |
}); | |
// Collection | |
var TodoList = Backbone.Collection.extend({ | |
model: app.Todo, | |
url: '/', | |
nextOrder: function() { | |
if ( !this.length ) { | |
return 1; | |
} | |
return this.last().get('order') + 1; | |
} | |
}); | |
app.Todos = new TodoList(); | |
// App View ( Whole Todo List ) | |
app.AppView = Backbone.View.extend({ | |
el: '#app', | |
events: { | |
'keypress #new': 'createOnEnter' | |
}, | |
initialize: function() { | |
this.$input = this.$('#new'); | |
this.$main = this.$('#main'); | |
this.listenTo(app.Todos, 'add', this.addOne); | |
}, | |
render: function() { | |
if ( app.Todos.length ) { | |
this.$main.show(); | |
} else { | |
this.$main.hide(); | |
} | |
}, | |
addOne: function( todo ) { | |
var view = new app.TodoView({ model: todo }); | |
$('#list').append( view.render().el ); | |
}, | |
newAttributes: function() { | |
return { | |
title: this.$input.val().trim(), | |
order: app.Todos.nextOrder(), | |
done: false | |
}; | |
}, | |
createOnEnter: function( event ) { | |
if ( event.which !== 13 || | |
!this.$input.val().trim() ) { | |
return; | |
} | |
app.Todos.create( this.newAttributes() ); | |
this.$input.val(''); | |
} | |
}); | |
// Item View ( Each Task ) | |
app.TodoView = Backbone.View.extend({ | |
tagName: 'li', | |
events: { | |
'click .toggle': 'toggleDone', | |
'click .destory': 'clear' | |
}, | |
template: _.template( $('#item-template').html() ), | |
initialize: function() { | |
this.listenTo(this.model, 'change', this.render); | |
this.listenTo(this.model, 'destroy', this.remove); | |
}, | |
render: function() { | |
this.$el.html( this.template( this.model.toJSON() ) ); | |
this.$el.toggleClass( 'done', this.model.get('done') ); | |
return this; | |
}, | |
toggleDone: function() { | |
this.model.toggle(); | |
}, | |
clear: function() { | |
this.model.destroy(); | |
} | |
}); |
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