Backbone.Marionette animated region based on Velocity.js animation library
npm install marionette-animated-regionAnimared region for Backbone.Marionette views based on Velocity.js animation library.

Backbone.Marionette animated region is convinient animated plugin based on Velocity.js. It provides you to create beautiful animation effects for your Marionette views.
Note: for Backbone.Marionette 2.x.x use version 1.2.0 of the Marionette animated region.
``bash`
npm install marionette-animated-region
First include Marionette and it dependencies and velocity.js lib.
Browser:
`javascript`
Common JS:
`javascript`
var Marionette = require('backbone.marionette');
var AnimatedRegion = require('marionette-animated-region');
The main goodies that Backbone.Marionette animated region uses only region properties and can work as simple Marionette region if you do not define animation. So it's flexible, fast and maximum safety.
`javascript`
var LayoutView = Marionette.View.extend({
regions: {
animatedRegion: {
selector: '#region_selector',
regionClass: AnimatedRegion,
animation: {
showAnimation: [...],
hideAnimation: [...]
}
}
}
});
To use animation you must define animation object. It can includes two arrays of effects, you can define only showAnimation or hideAnimation or both. Each element of the array should be Velocity.js animation object.
Basic example:
`javascript
var LayoutView = Marionette.View.extend({
//...
regions: {
example: {
selector: '#region_selector',
regionClass: AnimatedRegion,
animation: {
showAnimation: [
{
properties: 'transition.slideDownBigIn',
options: { stagger: 300 }
}
],
hideAnimation: [
{
properties: 'transition.slideUpBigOut',
options: { stagger: 300 }
}
]
}
}
},
onRender: function() {
// this view will render with animation
var example = this.getRegion('example');
example.show(new Marionette.ItemView());
// and after 2 second remove with animation
_.delay(_.bind(function() { example.empty(); }, this), 2000);
}
});
new LayoutView({ el: $('#layout_view') }).render();
`
It's possible to determine set of effects, like:
`javascript`
//...
showAnimation: [
{
properties: 'transition.slideRightBigIn',
options: { stagger: 500 }
},
{
properties: {
rotateZ: '180deg'
}
},
{
properties: {
rotateZ: '90deg'
}
},
//...
],
//...
Backbone.Marionette animated region includes show and destroy callbacks. In some situations you may need to perform some action only after the animation will take place. So with Backbone.Radio you can provide specific global events region:shown and region:removed in region channel namespace for your Marionette instances.
`javascript
var channel = Backbone.Radio.channel('region');
//...
initialize: function() {
channel.on('region:shown', function(region) {
// region variable contains region which has beed rendered,
// you can manipulate it
if (region.options.name) {
console.log(region.options.name + ' has been rendered');
}
});
channel.on('region:removed', function(region) {
console.log(region);
});
},
//...
``
* The Marionette team for backbone.marionette.js
* The Julian Shapiro and Velocity team for velocity.js
Working examples you can find here