/* globals Polymer, window, document, Path, Gui */
'use strict';

// [ ] scrolling when docked
// [ ] scrolling when window short and not docked

Polymer('gui-panel', {

  docked: false,
  open: true,
  touch: ('ontouchstart' in window) ||
         (!!window.DocumentTouch && document instanceof window.DocumentTouch),

  ready: function() {

    this.anon.values = {};

    // window.addEventListener( 'resize', this.checkHeight.bind( this));

  },

  anon: function() {
    var name;

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

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

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

    this.anon.values[name] = initialValue;

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

  },

  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 = Gui.getController(value, args);

    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.appendChild(row);

    return controller;

  },

  // Observers
  // -------------------------------

  openChanged: function() {

    if (this.open || this.docked) {

      // let the style sheet take care of things

      this.$.container.style.transform = '';

    } else {

      // todo: need the rest of the vendor prefixes ...
      // wish i could pipe javascript variables into styl.

      var y = -this.$.controllers.offsetHeight + 'px';
      this.$.container.style.transform = 'translate3d(0, ' + y + ', 0)';

    }

  },

  dockedChanged: function() {

    this.openChanged();

  },

  // Events
  // -------------------------------

  tapClose: function() {
    this.open = !this.open;
  },

  // checkHeight: function() {

  //   if ( window.innerHeight < this.$.controllers.offsetHeight) {
  //     this.docked = true;
  //   } else {
  //     this.docked = false;
  //   }

  // },

  // Legacy
  // -------------------------------

  listenAll: function() {

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

  }

  // todo: domElement

});