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london:body-class.js
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london:body-class.js
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/*
```
Meteor ================================================
'|| .|''''|, '||\ ||` '||'''|. .|''''|, '||\ ||`
|| || || ||\\ || || || || || ||\\ ||
|| || || || \\ || || || || || || \\ ||
|| || || || \\|| || || || || || \\||
.||...| `|....|' .|| \||. .||...|' `|....|' .|| \||.
============================================ body-class
```
Giving you `Blaze.addBodyClass` for **live live live** reactive class names on the body element.
Usage: `Blaze.addBodyClass(fn)`
Example:
```javascript
Session.setDefault('state', 'alpha')
Blaze.addBodyClass(function() {
return Session.get('state')
})
```
results in `<body class="alpha">`
- If `iron:router` is present, the current route is automatically added as a body class.
- Calling addBodyClass multiple times is fine. They all end up as additional body classes.
- Duplicate classes are removed by virtue of using jQuery `addClass` to do the dirty work.
by: @olizilla for meteor-london
*/
var prevSingleton
Blaze.addBodyClass = function (fn) {
if($.isArray(fn)) {
return fn.forEach(Blaze.addBodyClass)
}
if(typeof fn !== 'function') {
$('body').removeClass(prevSingleton)
return Meteor.startup(function () { $('body').addClass(prevSingleton = fn) })
}
Meteor.startup(function () {
Tracker.autorun(function () {
$('body')
.removeClass(fn._prev)
.addClass(fn._prev = fn())
})
})
}
if(Package['iron:router']) {
Meteor.startup(function () {
Blaze.addBodyClass(function () {
return Router.current() && Router.current().route.getName()
})
})
}
if(Package['meteorhacks:flow-router'] || Package['kadira:flow-router']) {
Meteor.startup(function () {
// Since we need to wait for startup, we need to addBodyClass immediately, as the entry page will already have rendered
Blaze.addBodyClass(FlowRouter.getRouteName())
FlowRouter.triggers.enter([function (context) {
Blaze.addBodyClass(context.route.name)
}])
})
}