ERP/static/tinymce4.7.5/markerwithlabel.js

/**
 * @name MarkerWithLabel for V3
 * @version 1.1.10 [April 8, 2014]
 * @author Gary Little (inspired by code from Marc Ridey of Google).
 * @copyright Copyright 2012 Gary Little [gary at luxcentral.com]
 * @fileoverview MarkerWithLabel extends the Google Maps JavaScript API V3
 *  <code>google.maps.Marker</code> class.
 *  <p>
 *  MarkerWithLabel allows you to define markers with associated labels. As you would expect,
 *  if the marker is draggable, so too will be the label. In addition, a marker with a label
 *  responds to all mouse events in the same manner as a regular marker. It also fires mouse
 *  events and "property changed" events just as a regular marker would. Version 1.1 adds
 *  support for the raiseOnDrag feature introduced in API V3.3.
 *  <p>
 *  If you drag a marker by its label, you can cancel the drag and return the marker to its
 *  original position by pressing the <code>Esc</code> key. This doesn't work if you drag the marker
 *  itself because this feature is not (yet) supported in the <code>google.maps.Marker</code> class.
 */

/*!
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/* jslint browser:true */
/*global document,google */

/**
 * @param {Function} childCtor Child class.
 * @param {Function} parentCtor Parent class.
 * @private
 */
function inherits(childCtor, parentCtor) {
  /* @constructor */
  function tempCtor() {}
  tempCtor.prototype = parentCtor.prototype
  childCtor.superClass_ = parentCtor.prototype
  childCtor.prototype = new tempCtor()
  /* @override */
  childCtor.prototype.constructor = childCtor
}

/**
 * This constructor creates a label and associates it with a marker.
 * It is for the private use of the MarkerWithLabel class.
 * @constructor
 * @param {Marker} marker The marker with which the label is to be associated.
 * @param {string} crossURL The URL of the cross image =.
 * @param {string} handCursor The URL of the hand cursor.
 * @private
 */
function MarkerLabel_(marker, crossURL, handCursorURL) {
  this.marker_ = marker
  this.handCursorURL_ = marker.handCursorURL

  this.labelDiv_ = document.createElement('div')
  this.labelDiv_.style.cssText = 'position: absolute; overflow: hidden;'

  // Set up the DIV for handling mouse events in the label. This DIV forms a transparent veil
  // in the "overlayMouseTarget" pane, a veil that covers just the label. This is done so that
  // events can be captured even if the label is in the shadow of a google.maps.InfoWindow.
  // Code is included here to ensure the veil is always exactly the same size as the label.
  this.eventDiv_ = document.createElement('div')
  this.eventDiv_.style.cssText = this.labelDiv_.style.cssText

  // This is needed for proper behavior on MSIE:
  this.eventDiv_.setAttribute('onselectstart', 'return false;')
  this.eventDiv_.setAttribute('ondragstart', 'return false;')

  // Get the DIV for the "X" to be displayed when the marker is raised.
  this.crossDiv_ = MarkerLabel_.getSharedCross(crossURL)
}

inherits(MarkerLabel_, google.maps.OverlayView)

/**
 * Returns the DIV for the cross used when dragging a marker when the
 * raiseOnDrag parameter set to true. One cross is shared with all markers.
 * @param {string} crossURL The URL of the cross image =.
 * @private
 */
MarkerLabel_.getSharedCross = function(crossURL) {
  var div
  if (typeof MarkerLabel_.getSharedCross.crossDiv === 'undefined') {
    div = document.createElement('img')
    div.style.cssText = 'position: absolute; z-index: 1000002; display: none;'
    // Hopefully Google never changes the standard "X" attributes:
    div.style.marginLeft = '-8px'
    div.style.marginTop = '-9px'
    div.src = crossURL
    MarkerLabel_.getSharedCross.crossDiv = div
  }
  return MarkerLabel_.getSharedCross.crossDiv
}

/**
 * Adds the DIV representing the label to the DOM. This method is called
 * automatically when the marker's <code>setMap</code> method is called.
 * @private
 */
MarkerLabel_.prototype.onAdd = function() {
  var me = this
  var cMouseIsDown = false
  var cDraggingLabel = false
  var cSavedZIndex
  var cLatOffset, cLngOffset
  var cIgnoreClick
  var cRaiseEnabled
  var cStartPosition
  var cStartCenter
  // Constants:
  var cRaiseOffset = 20
  var cDraggingCursor = 'url(' + this.handCursorURL_ + ')'

  // Stops all processing of an event.
  //
  var cAbortEvent = function(e) {
    if (e.preventDefault) {
      e.preventDefault()
    }
    e.cancelBubble = true
    if (e.stopPropagation) {
      e.stopPropagation()
    }
  }

  var cStopBounce = function() {
    me.marker_.setAnimation(null)
  }

  this.getPanes().overlayImage.appendChild(this.labelDiv_)
  this.getPanes().overlayMouseTarget.appendChild(this.eventDiv_)
  // One cross is shared with all markers, so only add it once:
  if (typeof MarkerLabel_.getSharedCross.processed === 'undefined') {
    this.getPanes().overlayImage.appendChild(this.crossDiv_)
    MarkerLabel_.getSharedCross.processed = true
  }

  this.listeners_ = [
    google.maps.event.addDomListener(this.eventDiv_, 'mouseover', function(e) {
      if (me.marker_.getDraggable() || me.marker_.getClickable()) {
        this.style.cursor = 'pointer'
        google.maps.event.trigger(me.marker_, 'mouseover', e)
      }
    }),
    google.maps.event.addDomListener(this.eventDiv_, 'mouseout', function(e) {
      if ((me.marker_.getDraggable() || me.marker_.getClickable()) && !cDraggingLabel) {
        this.style.cursor = me.marker_.getCursor()
        google.maps.event.trigger(me.marker_, 'mouseout', e)
      }
    }),
    google.maps.event.addDomListener(this.eventDiv_, 'mousedown', function(e) {
      cDraggingLabel = false
      if (me.marker_.getDraggable()) {
        cMouseIsDown = true
        this.style.cursor = cDraggingCursor
      }
      if (me.marker_.getDraggable() || me.marker_.getClickable()) {
        google.maps.event.trigger(me.marker_, 'mousedown', e)
        cAbortEvent(e) // Prevent map pan when starting a drag on a label
      }
    }),
    google.maps.event.addDomListener(document, 'mouseup', function(mEvent) {
      var position
      if (cMouseIsDown) {
        cMouseIsDown = false
        me.eventDiv_.style.cursor = 'pointer'
        google.maps.event.trigger(me.marker_, 'mouseup', mEvent)
      }
      if (cDraggingLabel) {
        if (cRaiseEnabled) { // Lower the marker & label
          position = me.getProjection().fromLatLngToDivPixel(me.marker_.getPosition())
          position.y += cRaiseOffset
          me.marker_.setPosition(me.getProjection().fromDivPixelToLatLng(position))
          // This is not the same bouncing style as when the marker portion is dragged,
          // but it will have to do:
          try { // Will fail if running Google Maps API earlier than V3.3
            me.marker_.setAnimation(google.maps.Animation.BOUNCE)
            setTimeout(cStopBounce, 1406)
          } catch (e) {}
        }
        me.crossDiv_.style.display = 'none'
        me.marker_.setZIndex(cSavedZIndex)
        cIgnoreClick = true // Set flag to ignore the click event reported after a label drag
        cDraggingLabel = false
        mEvent.latLng = me.marker_.getPosition()
        google.maps.event.trigger(me.marker_, 'dragend', mEvent)
      }
    }),
    google.maps.event.addListener(me.marker_.getMap(), 'mousemove', function(mEvent) {
      var position
      if (cMouseIsDown) {
        if (cDraggingLabel) {
          // Change the reported location from the mouse position to the marker position:
          mEvent.latLng = new google.maps.LatLng(mEvent.latLng.lat() - cLatOffset, mEvent.latLng.lng() - cLngOffset)
          position = me.getProjection().fromLatLngToDivPixel(mEvent.latLng)
          if (cRaiseEnabled) {
            me.crossDiv_.style.left = position.x + 'px'
            me.crossDiv_.style.top = position.y + 'px'
            me.crossDiv_.style.display = ''
            position.y -= cRaiseOffset
          }
          me.marker_.setPosition(me.getProjection().fromDivPixelToLatLng(position))
          if (cRaiseEnabled) { // Don't raise the veil; this hack needed to make MSIE act properly
            me.eventDiv_.style.top = (position.y + cRaiseOffset) + 'px'
          }
          google.maps.event.trigger(me.marker_, 'drag', mEvent)
        } else {
          // Calculate offsets from the click point to the marker position:
          cLatOffset = mEvent.latLng.lat() - me.marker_.getPosition().lat()
          cLngOffset = mEvent.latLng.lng() - me.marker_.getPosition().lng()
          cSavedZIndex = me.marker_.getZIndex()
          cStartPosition = me.marker_.getPosition()
          cStartCenter = me.marker_.getMap().getCenter()
          cRaiseEnabled = me.marker_.get('raiseOnDrag')
          cDraggingLabel = true
          me.marker_.setZIndex(1000000) // Moves the marker & label to the foreground during a drag
          mEvent.latLng = me.marker_.getPosition()
          google.maps.event.trigger(me.marker_, 'dragstart', mEvent)
        }
      }
    }),
    google.maps.event.addDomListener(document, 'keydown', function(e) {
      if (cDraggingLabel) {
        if (e.keyCode === 27) { // Esc key
          cRaiseEnabled = false
          me.marker_.setPosition(cStartPosition)
          me.marker_.getMap().setCenter(cStartCenter)
          google.maps.event.trigger(document, 'mouseup', e)
        }
      }
    }),
    google.maps.event.addDomListener(this.eventDiv_, 'click', function(e) {
      if (me.marker_.getDraggable() || me.marker_.getClickable()) {
        if (cIgnoreClick) { // Ignore the click reported when a label drag ends
          cIgnoreClick = false
        } else {
          google.maps.event.trigger(me.marker_, 'click', e)
          cAbortEvent(e) // Prevent click from being passed on to map
        }
      }
    }),
    google.maps.event.addDomListener(this.eventDiv_, 'dblclick', function(e) {
      if (me.marker_.getDraggable() || me.marker_.getClickable()) {
        google.maps.event.trigger(me.marker_, 'dblclick', e)
        cAbortEvent(e) // Prevent map zoom when double-clicking on a label
      }
    }),
    google.maps.event.addListener(this.marker_, 'dragstart', function(mEvent) {
      if (!cDraggingLabel) {
        cRaiseEnabled = this.get('raiseOnDrag')
      }
    }),
    google.maps.event.addListener(this.marker_, 'drag', function(mEvent) {
      if (!cDraggingLabel) {
        if (cRaiseEnabled) {
          me.setPosition(cRaiseOffset)
          // During a drag, the marker's z-index is temporarily set to 1000000 to
          // ensure it appears above all other markers. Also set the label's z-index
          // to 1000000 (plus or minus 1 depending on whether the label is supposed
          // to be above or below the marker).
          me.labelDiv_.style.zIndex = 1000000 + (this.get('labelInBackground') ? -1 : +1)
        }
      }
    }),
    google.maps.event.addListener(this.marker_, 'dragend', function(mEvent) {
      if (!cDraggingLabel) {
        if (cRaiseEnabled) {
          me.setPosition(0) // Also restores z-index of label
        }
      }
    }),
    google.maps.event.addListener(this.marker_, 'position_changed', function() {
      me.setPosition()
    }),
    google.maps.event.addListener(this.marker_, 'zindex_changed', function() {
      me.setZIndex()
    }),
    google.maps.event.addListener(this.marker_, 'visible_changed', function() {
      me.setVisible()
    }),
    google.maps.event.addListener(this.marker_, 'labelvisible_changed', function() {
      me.setVisible()
    }),
    google.maps.event.addListener(this.marker_, 'title_changed', function() {
      me.setTitle()
    }),
    google.maps.event.addListener(this.marker_, 'labelcontent_changed', function() {
      me.setContent()
    }),
    google.maps.event.addListener(this.marker_, 'labelanchor_changed', function() {
      me.setAnchor()
    }),
    google.maps.event.addListener(this.marker_, 'labelclass_changed', function() {
      me.setStyles()
    }),
    google.maps.event.addListener(this.marker_, 'labelstyle_changed', function() {
      me.setStyles()
    })
  ]
}

/**
 * Removes the DIV for the label from the DOM. It also removes all event handlers.
 * This method is called automatically when the marker's <code>setMap(null)</code>
 * method is called.
 * @private
 */
MarkerLabel_.prototype.onRemove = function() {
  var i
  this.labelDiv_.parentNode.removeChild(this.labelDiv_)
  this.eventDiv_.parentNode.removeChild(this.eventDiv_)

  // Remove event listeners:
  for (i = 0; i < this.listeners_.length; i++) {
    google.maps.event.removeListener(this.listeners_[i])
  }
}

/**
 * Draws the label on the map.
 * @private
 */
MarkerLabel_.prototype.draw = function() {
  this.setContent()
  this.setTitle()
  this.setStyles()
}

/**
 * Sets the content of the label.
 * The content can be plain text or an HTML DOM node.
 * @private
 */
MarkerLabel_.prototype.setContent = function() {
  var content = this.marker_.get('labelContent')
  if (typeof content.nodeType === 'undefined') {
    this.labelDiv_.innerHTML = content
    this.eventDiv_.innerHTML = this.labelDiv_.innerHTML
  } else {
    this.labelDiv_.innerHTML = '' // Remove current content
    this.labelDiv_.appendChild(content)
    content = content.cloneNode(true)
    this.eventDiv_.innerHTML = '' // Remove current content
    this.eventDiv_.appendChild(content)
  }
}

/**
 * Sets the content of the tool tip for the label. It is
 * always set to be the same as for the marker itself.
 * @private
 */
MarkerLabel_.prototype.setTitle = function() {
  this.eventDiv_.title = this.marker_.getTitle() || ''
}

/**
 * Sets the style of the label by setting the style sheet and applying
 * other specific styles requested.
 * @private
 */
MarkerLabel_.prototype.setStyles = function() {
  var i, labelStyle

  // Apply style values from the style sheet defined in the labelClass parameter:
  this.labelDiv_.className = this.marker_.get('labelClass')
  this.eventDiv_.className = this.labelDiv_.className

  // Clear existing inline style values:
  this.labelDiv_.style.cssText = ''
  this.eventDiv_.style.cssText = ''
  // Apply style values defined in the labelStyle parameter:
  labelStyle = this.marker_.get('labelStyle')
  for (i in labelStyle) {
    if (labelStyle.hasOwnProperty(i)) {
      this.labelDiv_.style[i] = labelStyle[i]
      this.eventDiv_.style[i] = labelStyle[i]
    }
  }
  this.setMandatoryStyles()
}

/**
 * Sets the mandatory styles to the DIV representing the label as well as to the
 * associated event DIV. This includes setting the DIV position, z-index, and visibility.
 * @private
 */
MarkerLabel_.prototype.setMandatoryStyles = function() {
  this.labelDiv_.style.position = 'absolute'
  this.labelDiv_.style.overflow = 'hidden'
  // Make sure the opacity setting causes the desired effect on MSIE:
  if (typeof this.labelDiv_.style.opacity !== 'undefined' && this.labelDiv_.style.opacity !== '') {
    this.labelDiv_.style.MsFilter = '"progid:DXImageTransform.Microsoft.Alpha(opacity=' + (this.labelDiv_.style.opacity * 100) + ')"'
    this.labelDiv_.style.filter = 'alpha(opacity=' + (this.labelDiv_.style.opacity * 100) + ')'
  }

  this.eventDiv_.style.position = this.labelDiv_.style.position
  this.eventDiv_.style.overflow = this.labelDiv_.style.overflow
  this.eventDiv_.style.opacity = 0.01 // Don't use 0; DIV won't be clickable on MSIE
  this.eventDiv_.style.MsFilter = '"progid:DXImageTransform.Microsoft.Alpha(opacity=1)"'
  this.eventDiv_.style.filter = 'alpha(opacity=1)' // For MSIE

  this.setAnchor()
  this.setPosition() // This also updates z-index, if necessary.
  this.setVisible()
}

/**
 * Sets the anchor point of the label.
 * @private
 */
MarkerLabel_.prototype.setAnchor = function() {
  var anchor = this.marker_.get('labelAnchor')
  this.labelDiv_.style.marginLeft = -anchor.x + 'px'
  this.labelDiv_.style.marginTop = -anchor.y + 'px'
  this.eventDiv_.style.marginLeft = -anchor.x + 'px'
  this.eventDiv_.style.marginTop = -anchor.y + 'px'
}

/**
 * Sets the position of the label. The z-index is also updated, if necessary.
 * @private
 */
MarkerLabel_.prototype.setPosition = function(yOffset) {
  var position = this.getProjection().fromLatLngToDivPixel(this.marker_.getPosition())
  if (typeof yOffset === 'undefined') {
    yOffset = 0
  }
  this.labelDiv_.style.left = Math.round(position.x) + 'px'
  this.labelDiv_.style.top = Math.round(position.y - yOffset) + 'px'
  this.eventDiv_.style.left = this.labelDiv_.style.left
  this.eventDiv_.style.top = this.labelDiv_.style.top

  this.setZIndex()
}

/**
 * Sets the z-index of the label. If the marker's z-index property has not been defined, the z-index
 * of the label is set to the vertical coordinate of the label. This is in keeping with the default
 * stacking order for Google Maps: markers to the south are in front of markers to the north.
 * @private
 */
MarkerLabel_.prototype.setZIndex = function() {
  var zAdjust = (this.marker_.get('labelInBackground') ? -1 : +1)
  if (typeof this.marker_.getZIndex() === 'undefined') {
    this.labelDiv_.style.zIndex = parseInt(this.labelDiv_.style.top, 10) + zAdjust
    this.eventDiv_.style.zIndex = this.labelDiv_.style.zIndex
  } else {
    this.labelDiv_.style.zIndex = this.marker_.getZIndex() + zAdjust
    this.eventDiv_.style.zIndex = this.labelDiv_.style.zIndex
  }
}

/**
 * Sets the visibility of the label. The label is visible only if the marker itself is
 * visible (i.e., its visible property is true) and the labelVisible property is true.
 * @private
 */
MarkerLabel_.prototype.setVisible = function() {
  if (this.marker_.get('labelVisible')) {
    this.labelDiv_.style.display = this.marker_.getVisible() ? 'block' : 'none'
  } else {
    this.labelDiv_.style.display = 'none'
  }
  this.eventDiv_.style.display = this.labelDiv_.style.display
}

/**
 * @name MarkerWithLabelOptions
 * @class This class represents the optional parameter passed to the {@link MarkerWithLabel} constructor.
 *  The properties available are the same as for <code>google.maps.Marker</code> with the addition
 *  of the properties listed below. To change any of these additional properties after the labeled
 *  marker has been created, call <code>google.maps.Marker.set(propertyName, propertyValue)</code>.
 *  <p>
 *  When any of these properties changes, a property changed event is fired. The names of these
 *  events are derived from the name of the property and are of the form <code>propertyname_changed</code>.
 *  For example, if the content of the label changes, a <code>labelcontent_changed</code> event
 *  is fired.
 *  <p>
 * @property {string|Node} [labelContent] The content of the label (plain text or an HTML DOM node).
 * @property {Point} [labelAnchor] By default, a label is drawn with its anchor point at (0,0) so
 *  that its top left corner is positioned at the anchor point of the associated marker. Use this
 *  property to change the anchor point of the label. For example, to center a 50px-wide label
 *  beneath a marker, specify a <code>labelAnchor</code> of <code>google.maps.Point(25, 0)</code>.
 *  (Note: x-values increase to the right and y-values increase to the top.)
 * @property {string} [labelClass] The name of the CSS class defining the styles for the label.
 *  Note that style values for <code>position</code>, <code>overflow</code>, <code>top</code>,
 *  <code>left</code>, <code>zIndex</code>, <code>display</code>, <code>marginLeft</code>, and
 *  <code>marginTop</code> are ignored; these styles are for internal use only.
 * @property {Object} [labelStyle] An object literal whose properties define specific CSS
 *  style values to be applied to the label. Style values defined here override those that may
 *  be defined in the <code>labelClass</code> style sheet. If this property is changed after the
 *  label has been created, all previously set styles (except those defined in the style sheet)
 *  are removed from the label before the new style values are applied.
 *  Note that style values for <code>position</code>, <code>overflow</code>, <code>top</code>,
 *  <code>left</code>, <code>zIndex</code>, <code>display</code>, <code>marginLeft</code>, and
 *  <code>marginTop</code> are ignored; these styles are for internal use only.
 * @property {boolean} [labelInBackground] A flag indicating whether a label that overlaps its
 *  associated marker should appear in the background (i.e., in a plane below the marker).
 *  The default is <code>false</code>, which causes the label to appear in the foreground.
 * @property {boolean} [labelVisible] A flag indicating whether the label is to be visible.
 *  The default is <code>true</code>. Note that even if <code>labelVisible</code> is
 *  <code>true</code>, the label will <i>not</i> be visible unless the associated marker is also
 *  visible (i.e., unless the marker's <code>visible</code> property is <code>true</code>).
 * @property {boolean} [raiseOnDrag] A flag indicating whether the label and marker are to be
 *  raised when the marker is dragged. The default is <code>true</code>. If a draggable marker is
 *  being created and a version of Google Maps API earlier than V3.3 is being used, this property
 *  must be set to <code>false</code>.
 * @property {boolean} [optimized] A flag indicating whether rendering is to be optimized for the
 *  marker. <b>Important: The optimized rendering technique is not supported by MarkerWithLabel,
 *  so the value of this parameter is always forced to <code>false</code>.
 * @property {string} [crossImage="http://maps.gstatic.com/intl/en_us/mapfiles/drag_cross_67_16.png"]
 *  The URL of the cross image to be displayed while dragging a marker.
 * @property {string} [handCursor="http://maps.gstatic.com/intl/en_us/mapfiles/closedhand_8_8.cur"]
 *  The URL of the cursor to be displayed while dragging a marker.
 */
/**
 * Creates a MarkerWithLabel with the options specified in {@link MarkerWithLabelOptions}.
 * @constructor
 * @param {MarkerWithLabelOptions} [opt_options] The optional parameters.
 */
function MarkerWithLabel(opt_options) {
  opt_options = opt_options || {}
  opt_options.labelContent = opt_options.labelContent || ''
  opt_options.labelAnchor = opt_options.labelAnchor || new google.maps.Point(0, 0)
  opt_options.labelClass = opt_options.labelClass || 'markerLabels'
  opt_options.labelStyle = opt_options.labelStyle || {}
  opt_options.labelInBackground = opt_options.labelInBackground || false
  if (typeof opt_options.labelVisible === 'undefined') {
    opt_options.labelVisible = true
  }
  if (typeof opt_options.raiseOnDrag === 'undefined') {
    opt_options.raiseOnDrag = true
  }
  if (typeof opt_options.clickable === 'undefined') {
    opt_options.clickable = true
  }
  if (typeof opt_options.draggable === 'undefined') {
    opt_options.draggable = false
  }
  if (typeof opt_options.optimized === 'undefined') {
    opt_options.optimized = false
  }
  opt_options.crossImage = opt_options.crossImage || 'http' + (document.location.protocol === 'https:' ? 's' : '') + '://maps.gstatic.com/intl/en_us/mapfiles/drag_cross_67_16.png'
  opt_options.handCursor = opt_options.handCursor || 'http' + (document.location.protocol === 'https:' ? 's' : '') + '://maps.gstatic.com/intl/en_us/mapfiles/closedhand_8_8.cur'
  opt_options.optimized = false // Optimized rendering is not supported

  this.label = new MarkerLabel_(this, opt_options.crossImage, opt_options.handCursor) // Bind the label to the marker

  // Call the parent constructor. It calls Marker.setValues to initialize, so all
  // the new parameters are conveniently saved and can be accessed with get/set.
  // Marker.set triggers a property changed event (called "propertyname_changed")
  // that the marker label listens for in order to react to state changes.
  google.maps.Marker.apply(this, arguments)
}

inherits(MarkerWithLabel, google.maps.Marker)

/**
 * Overrides the standard Marker setMap function.
 * @param {Map} theMap The map to which the marker is to be added.
 * @private
 */
MarkerWithLabel.prototype.setMap = function(theMap) {
  // Call the inherited function...
  google.maps.Marker.prototype.setMap.apply(this, arguments)

  // ... then deal with the label:
  this.label.setMap(theMap)
}