# all files / ol/control/ fullscreencontrol.js

52.63% Statements 30/57
30% Branches 9/30
25% Functions 1/4
52.63% Lines 30/57

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     goog.provide('ol.control.FullScreen');

    goog.require('goog.asserts');
    goog.require('goog.dom');
    goog.require('goog.dom.classlist');
    goog.require('goog.dom.fullscreen');
    goog.require('goog.dom.fullscreen.EventType');
    goog.require('goog.events');
    goog.require('goog.events.EventType');
    goog.require('ol');
    goog.require('ol.control.Control');
    goog.require('ol.css');

    /**
     * @classdesc
     * Provides a button that when clicked fills up the full screen with the map.
     * When in full screen mode, a close button is shown to exit full screen mode.
     * The [Fullscreen API](http://www.w3.org/TR/fullscreen/) is used to
     * toggle the map in full screen mode.
     *
     *
     * @constructor
     * @extends {ol.control.Control}
     * @param {olx.control.FullScreenOptions=} opt_options Options.
     * @api stable
     */
    ol.control.FullScreen = function(opt_options) {

      var options = opt_options ? opt_options : {};

      /**
       * @private
       * @type {string}
       */
      this.cssClassName_ = options.className ? options.className : 'ol-full-screen';

      var label = options.label ? options.label : '\u2194';

      /**
       * @private
       * @type {Node}
       */
      this.labelNode_ = goog.isString(label) ?
          goog.dom.createTextNode(label) : label;

      var labelActive = options.labelActive ? options.labelActive : '\u00d7';

      /**
       * @private
       * @type {Node}
       */
      this.labelActiveNode_ = goog.isString(labelActive) ?
          goog.dom.createTextNode(labelActive) : labelActive;

      var tipLabel = options.tipLabel ? options.tipLabel : 'Toggle full-screen';
      var button = goog.dom.createDom('BUTTON', {
        'class': this.cssClassName_ + '-' + goog.dom.fullscreen.isFullScreen(),
        'type': 'button',
        'title': tipLabel
      }, this.labelNode_);

      goog.events.listen(button, goog.events.EventType.CLICK,
          this.handleClick_, false, this);

      goog.events.listen(goog.global.document,
          goog.dom.fullscreen.EventType.CHANGE,
          this.handleFullScreenChange_, false, this);

      var cssClasses = this.cssClassName_ + ' ' + ol.css.CLASS_UNSELECTABLE +
          ' ' + ol.css.CLASS_CONTROL + ' ' +
          (!goog.dom.fullscreen.isSupported() ? ol.css.CLASS_UNSUPPORTED : '');
      var element = goog.dom.createDom('DIV', cssClasses, button);

      goog.base(this, {
        element: element,
        target: options.target
      });

      /**
       * @private
       * @type {boolean}
       */
      this.keys_ = options.keys !== undefined ? options.keys : false;

    };
    goog.inherits(ol.control.FullScreen, ol.control.Control);

    /**
     * @param {goog.events.BrowserEvent} event The event to handle
     * @private
     */
    ol.control.FullScreen.prototype.handleClick_ = function(event) {
      event.preventDefault();
      this.handleFullScreen_();
    };

    /**
     * @private
     */
    ol.control.FullScreen.prototype.handleFullScreen_ = function() {
      if (!goog.dom.fullscreen.isSupported()) {
        return;
      }
      var map = this.getMap();
      if (!map) {
        return;
      }
      if (goog.dom.fullscreen.isFullScreen()) {
        goog.dom.fullscreen.exitFullScreen();
      } else {
        var target = map.getTarget();
        goog.asserts.assert(target, 'target should be defined');
        var element = goog.dom.getElement(target);
        goog.asserts.assert(element, 'element should be defined');
        if (this.keys_) {
          goog.dom.fullscreen.requestFullScreenWithKeys(element);
        } else {
          goog.dom.fullscreen.requestFullScreen(element);
        }
      }
    };

    /**
     * @private
     */
    ol.control.FullScreen.prototype.handleFullScreenChange_ = function() {
      var opened = this.cssClassName_ + '-true';
      var closed = this.cssClassName_ + '-false';
      var button = goog.dom.getFirstElementChild(this.element);
      var map = this.getMap();
      if (goog.dom.fullscreen.isFullScreen()) {
        goog.dom.classlist.swap(button, closed, opened);
        goog.dom.replaceNode(this.labelActiveNode_, this.labelNode_);
      } else {
        goog.dom.classlist.swap(button, opened, closed);
        goog.dom.replaceNode(this.labelNode_, this.labelActiveNode_);
      }
      if (map) {
        map.updateSize();
      }
    };