# all files / ol/control/ fullscreen.js

42.31% Statements 44/104
18.18% Branches 14/77
33.33% Functions 4/12
42.31% Lines 44/104

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

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

    /**
     * @classdesc
     * Provides a button that when clicked fills up the full screen with the map.
     * The full screen source element is by default the element containing the map viewport unless
     * overridden by providing the `source` option. In which case, the dom
     * element introduced using this parameter will be displayed in full screen.
     *
     * 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
     */
    ol.control.FullScreen = function(opt_options) {

      var options = opt_options ? opt_options : {};

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

      var label = options.label !== undefined ? options.label : '\u2922';

      /**
       * @private
       * @type {Node}
       */
      this.labelNode_ = typeof label === 'string' ?
        document.createTextNode(label) : label;

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

      /**
       * @private
       * @type {Node}
       */
      this.labelActiveNode_ = typeof labelActive === 'string' ?
        document.createTextNode(labelActive) : labelActive;

      var tipLabel = options.tipLabel ? options.tipLabel : 'Toggle full-screen';
      var button = document.createElement('button');
      button.className = this.cssClassName_ + '-' + ol.control.FullScreen.isFullScreen();
      button.setAttribute('type', 'button');
      button.title = tipLabel;
      button.appendChild(this.labelNode_);

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

      var cssClasses = this.cssClassName_ + ' ' + ol.css.CLASS_UNSELECTABLE +
          ' ' + ol.css.CLASS_CONTROL + ' ' +
          (!ol.control.FullScreen.isFullScreenSupported() ? ol.css.CLASS_UNSUPPORTED : '');
      var element = document.createElement('div');
      element.className = cssClasses;
      element.appendChild(button);

      ol.control.Control.call(this, {
        element: element,
        target: options.target
      });

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

      /**
       * @private
       * @type {Element|string|undefined}
       */
      this.source_ = options.source;

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

    /**
     * @param {Event} 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 (!ol.control.FullScreen.isFullScreenSupported()) {
        return;
      }
      var map = this.getMap();
      if (!map) {
        return;
      }
      if (ol.control.FullScreen.isFullScreen()) {
        ol.control.FullScreen.exitFullScreen();
      } else {
        var element;
        if (this.source_) {
          element = typeof this.source_ === 'string' ?
            document.getElementById(this.source_) :
            this.source_;
        } else {
          element = map.getTargetElement();
        }
        if (this.keys_) {
          ol.control.FullScreen.requestFullScreenWithKeys(element);

        } else {
          ol.control.FullScreen.requestFullScreen(element);
        }
      }
    };

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

    /**
     * @inheritDoc
     * @api
     */
    ol.control.FullScreen.prototype.setMap = function(map) {
      ol.control.Control.prototype.setMap.call(this, map);
      if (map) {
        this.listenerKeys.push(ol.events.listen(document,
            ol.control.FullScreen.getChangeType_(),
            this.handleFullScreenChange_, this)
        );
      }
    };

    /**
     * @return {boolean} Fullscreen is supported by the current platform.
     */
    ol.control.FullScreen.isFullScreenSupported = function() {
      var body = document.body;
      return !!(
        body.webkitRequestFullscreen ||
        (body.mozRequestFullScreen && document.mozFullScreenEnabled) ||
        (body.msRequestFullscreen && document.msFullscreenEnabled) ||
        (body.requestFullscreen && document.fullscreenEnabled)
      );
    };

    /**
     * @return {boolean} Element is currently in fullscreen.
     */
    ol.control.FullScreen.isFullScreen = function() {
      return !!(
        document.webkitIsFullScreen || document.mozFullScreen ||
        document.msFullscreenElement || document.fullscreenElement
      );
    };

    /**
     * Request to fullscreen an element.
     * @param {Node} element Element to request fullscreen
     */
    ol.control.FullScreen.requestFullScreen = function(element) {
      if (element.requestFullscreen) {
        element.requestFullscreen();
      } else if (element.msRequestFullscreen) {
        element.msRequestFullscreen();
      } else if (element.mozRequestFullScreen) {
        element.mozRequestFullScreen();
      } else if (element.webkitRequestFullscreen) {
        element.webkitRequestFullscreen();
      }
    };

    /**
     * Request to fullscreen an element with keyboard input.
     * @param {Node} element Element to request fullscreen
     */
    ol.control.FullScreen.requestFullScreenWithKeys = function(element) {
      if (element.mozRequestFullScreenWithKeys) {
        element.mozRequestFullScreenWithKeys();
      } else if (element.webkitRequestFullscreen) {
        element.webkitRequestFullscreen(Element.ALLOW_KEYBOARD_INPUT);
      } else {
        ol.control.FullScreen.requestFullScreen(element);
      }
    };

    /**
     * Exit fullscreen.
     */
    ol.control.FullScreen.exitFullScreen = function() {
      if (document.exitFullscreen) {
        document.exitFullscreen();
      } else if (document.msExitFullscreen) {
        document.msExitFullscreen();
      } else if (document.mozCancelFullScreen) {
        document.mozCancelFullScreen();
      } else if (document.webkitExitFullscreen) {
        document.webkitExitFullscreen();
      }
    };

    /**
     * @return {string} Change type.
     * @private
     */
    ol.control.FullScreen.getChangeType_ = (function() {
      var changeType;
      return function() {
        if (!changeType) {
          var body = document.body;
          if (body.webkitRequestFullscreen) {
            changeType = 'webkitfullscreenchange';
          } else if (body.mozRequestFullScreen) {
            changeType = 'mozfullscreenchange';
          } else if (body.msRequestFullscreen) {
            changeType = 'MSFullscreenChange';
          } else if (body.requestFullscreen) {
            changeType = 'fullscreenchange';
          }
        }
        return changeType;
      };
    })();