goog.require('ol.Map');
goog.require('ol.RendererHint');
goog.require('ol.View2D');
goog.require('ol.interaction');
goog.require('ol.interaction.Draw');
goog.require('ol.layer.Tile');
goog.require('ol.layer.Vector');
goog.require('ol.source.MapQuest');
goog.require('ol.source.Vector');
goog.require('ol.style.Circle');
goog.require('ol.style.Fill');
goog.require('ol.style.Stroke');
goog.require('ol.style.Style');

var raster = new ol.layer.Tile({
  source: new ol.source.MapQuest({layer: 'sat'})
});

var styleArray = [new ol.style.Style({
  fill: new ol.style.Fill({
    color: 'rgba(255, 255, 255, 0.2)'
  }),
  stroke: new ol.style.Stroke({
    color: '#ffcc33',
    width: 2
  }),
  image: new ol.style.Circle({
    radius: 7,
    fill: new ol.style.Fill({
      color: '#ffcc33'
    })
  })
})];

var source = new ol.source.Vector();

var vector = new ol.layer.Vector({
  source: source,
  styleFunction: function(feature, resolution) {
    return styleArray;
  }
});

var map = new ol.Map({
  layers: [raster, vector],
  renderer: ol.RendererHint.CANVAS,
  target: 'map',
  view: new ol.View2D({
    center: [-11000000, 4600000],
    zoom: 4
  })
});

var typeSelect = document.getElementById('type');

var draw; // global so we can remove it later
function addInteraction() {
  draw = new ol.interaction.Draw({
    source: source,
    type: /** @type {ol.geom.GeometryType} */
        (typeSelect.options[typeSelect.selectedIndex].value)
  });
  map.addInteraction(draw);
}


/**
 * Let user change the geometry type.
 * @param {Event} e Change event.
 */
typeSelect.onchange = function(e) {
  map.removeInteraction(draw);
  addInteraction();
};

addInteraction();