( function( scope ) {

/* globals Path */

var Gui = function( params ) {

    if ( !ready ) {
        Gui.error( 'Gui not ready. Put your code inside Gui.ready()' );
    }

    params = params || {};

    // Properties

    this.vars = {};
    this.localStorage = params.localStorage || false;

    // Make domElement

    this.panel = document.createElement( 'dat-gui' );
    this.panel.autoPlace = params.autoPlace !== false;

    if ( this.panel.autoPlace ) {
        document.body.appendChild( this.panel );
    }

};


// Instance methods
// -------------------------------

Gui.prototype.add = function( object, path ) {

    // Make controller

    var value = Path.get( path ).getValueFrom( object );

    if ( value === null || value === undefined ) {
        return Gui.error( object + ' doesn\'t have a value for path "' + path + '".' );
    }

    var args = Array.prototype.slice.call( arguments, 2 );
    var controller;

    if ( args[ 0 ] instanceof Array || typeof args[ 0 ] == 'object' ) {
        controller = document.createElement( 'dat-gui-option' );
    } else {
        controller = Gui.getController( value );
    }

    if ( !controller ) {
        return Gui.error( 'Unrecognized type:', value );
    }

    controller.watch( object, path );
    controller.init.apply( controller, args );

    // Make row

    var row = document.createElement( 'gui-row' );
    row.name = path;

    controller.row = row;

    controller.name = function( name ) {
        row.name = name;
    };

    controller.comment = function( comment ) {
        row.comment = comment;
    };

    row.appendChild( controller );
    this.panel.appendChild( row );

    return controller;

};

Gui.prototype.remember = function( object ) {};

Gui.prototype.var = function() {

    var name, initialValue, args;

    if ( arguments.length == 1 ) {
        name = arguments[ 0 ];
        return this.vars[ name ];
    }

    initialValue = arguments[ 1 ];
    name = arguments[ 0 ];

    args = [ this.vars, name ];
    args = args.concat( Array.prototype.slice.call( arguments, 2 ) );

    this.vars[ name ] = initialValue;

    return this.add.apply( this, args );

};

Gui.prototype.listenAll = function() {

    Gui.warn( 'controller.listenAll() is deprecated. All controllers are listened for free.' );

};


// Register custom controllers
// -------------------------------

var controllers = {};

Gui.register = function( elementName, test ) {

    controllers[ elementName ] = test;

};


// Returns a controller based on a value
// -------------------------------

Gui.getController = function( value ) {

    for ( var type in controllers ) {

        var test = controllers[ type ];

        if ( test( value ) ) {

            return document.createElement( type );

        }

    }

};


// Gui ready handler ... * shakes fist at polymer *
// -------------------------------

var ready = false;
var readyHandlers = [];

document.addEventListener( 'polymer-ready', function() {

    ready = true;
    readyHandlers.forEach( function( fnc ) {

        fnc();

    } );

} );

Gui.ready = function( fnc ) {

    if ( ready ) {
        fnc();
    } else {
        readyHandlers.push( fnc );
    }

};


// Console
// -------------------------------

Gui.error = function() {
    var args = Array.prototype.slice.apply( arguments );
    args.unshift( 'dat-gui ::' );
    console.error.apply( console, args );
};

Gui.warn = function() {
    var args = Array.prototype.slice.apply( arguments );
    args.unshift( 'dat-gui ::' );
    console.warn.apply( console, args );
};


// Old namespaces
// -------------------------------

var dat = {};

dat.gui = {};
dat.gui.GUI = Gui;
dat.GUI = dat.gui.GUI;

dat.color = {};
dat.color.Color = function() {};

dat.dom = {};
dat.dom.dom = function() {};

dat.controllers = {};
dat.controllers.Controller = constructor( 'dat-gui-base' );
dat.controllers.NumberController = constructor( 'dat-gui-number' );
dat.controllers.FunctionController = constructor( 'dat-gui-function' );
dat.controllers.ColorController = constructor( 'dat-gui-color' );
dat.controllers.BooleanController = constructor( 'dat-gui-boolean' );
dat.controllers.OptionController = constructor( 'dat-gui-option' );

dat.controllers.NumberControllerBox = dat.controllers.NumberController;
dat.controllers.NumberControllerSlider = dat.controllers.NumberController;

function constructor( elementName ) {

    return function( object, path ) {
        var el = document.createElement( elementName );
        el.watch( object, path );
        return el;
    };

}


// Export
// -------------------------------

scope.dat = dat;
scope.Gui = Gui;


})( this );