ampersand-auto-closing-view

A view that closes itself after a certain period of time.

Install via npm:

npm install ampersand-auto-closing-view --save

Example

A simple example might be to show a prompt each time the user moves his/her mouse. It could look like this:

var View   = require('ampersand-view');
var ACView = require('ampersand-auto-closing-view');

// Extend the view so that we can have custom HTML instead
var MyACView = ACView.extend({
    template: '<h1>Hello, world!</h1>'
});

var MyView = View.extend({
    template: '<div class="container"><div class="prompt"></div></div>',
    events: {
        'mousemove': 'reset'
    },
    reset: function() {
        this.acView.trigger('reset');
    },
    render: function() {
        this.renderWithTemplate();
        this.acView = new MyACView();
        this.renderSubview(this.acView, '.prompt');
    }
});

var myView = new MyView({ el: document.body });
myView.render();

We can go a little further with this, and keep the view persisted whilst the user has his/her mouse over our custom view:

var MyACView = ACView.extend({
    template: '<h1>Hello, world!</h1>'
    events: {
        'mousemove': 'onMouseMove',
        'mouseout' : 'onMouseOut'
    },
    onMouseMove: function(e) {
        e.stopPropagation();
        this.trigger('stay');
    },
    onMouseOut: function(e) {
        e.stopPropagation();
        this.trigger('reset');
    }
});

Note that this module leaves the hide/show implementation up to you - at its most simple, you can define these two classes in your CSS file:

.hidden {
    display: none;
}

.active {
    display: block;
}

Or, make it look a little smoother by defining a transition between the two states:

.prompt {
    position: absolute;
    left: 0;
    top: 0;
    width: 200px;
    height: 100%;
    background: #222;
    transition: transform .2s ease;
}

.prompt.hidden {
    transform: translateX(-200px);
}

API

ampersand-auto-closing-view is itself an ampersand-view so you can extend it to add additional functionality. This is recommended as this module provides only a skeleton view which you can then fill with your own content.

new ACView(options)

Construct a new auto closing view with an options object. The following options are supported:

duration

type: Number

default: 4000

The duration, in milliseconds, that the element should be shown for.

activeClass

type: String

default: active

The class name to use whilst the element is active.

hiddenClass

type: String

default: hidden

The class name to use whilst the element is hidden.

ACView.hide()

"Hides" the view. Note that you should supplement this with your own CSS; this is so you can animate the view in and out using CSS transitions. Does not start the timer.

ACView.show()

"Shows" the view. Note that you should supplement this with your own CSS; this is so you can animate the view in and out using CSS transitions. Does not start the timer.

ACView.reset()

Reset the timer for the view, keeping it on screen for the duration that was defined (default is 4 seconds). Note that you can also do ACView.trigger('reset').

ACView.stay()

Convenience for clearing the timer and showing the view with a single method call. Note that you can also do ACView.trigger('stay').

ACView.clear()

Clears the timeout for the view, so that you can (temporarily) override the show/hide behaviour. For example, when you mouse over the view, it could stay in place until you mouse out of it again.

Contributing

Pull requests are welcome. If you add functionality, then please add unit tests to cover it.

License

MIT © Ben Briggs