Abstraction for wp.media

wordpressMediaGallery.js

var MediaGallery = {
    mediaFrame : "",
    setAttributes : function (title, button, type, multiple) {
        this.mediaFrame = wp.media({
            title: title,
            button: {
                text: button
            },
            library: {
                type: type
            },
            multiple: multiple
        });

    },
    open : function() {
        this.mediaFrame.open();
    },
    on : function(event, func) {
        this.mediaFrame.on(event, func);
    },
    selection : function() {
       return this.mediaFrame.state().get( 'selection' );
    }
};